WO2011062715A1 - Adaptive data transmission for a digital in-band modem operating over a voice channel - Google Patents
Adaptive data transmission for a digital in-band modem operating over a voice channel Download PDFInfo
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- WO2011062715A1 WO2011062715A1 PCT/US2010/053006 US2010053006W WO2011062715A1 WO 2011062715 A1 WO2011062715 A1 WO 2011062715A1 US 2010053006 W US2010053006 W US 2010053006W WO 2011062715 A1 WO2011062715 A1 WO 2011062715A1
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 52
- 230000003044 adaptive effect Effects 0.000 title description 2
- 238000012544 monitoring process Methods 0.000 claims description 29
- 230000005236 sound signal Effects 0.000 claims description 29
- 230000011664 signaling Effects 0.000 claims description 23
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- 238000012545 processing Methods 0.000 claims description 13
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- 238000004891 communication Methods 0.000 description 6
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
Definitions
- Wireless telecommunication coverage has become nearly ubiquitous in much of the world, especially in industrialized countries. In some developing countries as well, whole regions that lack traditional copper-wired telecom infrastructure have skipped over that technology to deploy wireless instead. Modern wireless networks provide a range of voice and data services. Technical details of those services can be found in many places, for example, the 3GPP standards group web site www.3gpp.org.
- SMS short message service
- Wireless voice services tend to be of generally good quality and are available almost everywhere people travel. Therefore, voice services are a good choice where reliable, broad coverage is important, for example in the implementation of emergency services, such as requests for police, fire, medical or other emergency services.
- emergency services such as requests for police, fire, medical or other emergency services.
- voice channels although optimized for efficient transmission of actual human voice traffic, in fact can be used to transmit relatively small amounts oidata as well (e.g., tens or hundreds of bits, rather than megabits.)
- Voice channels are characterized by special performance characteristics. For example, only a relatively narrow range of audio frequencies needs to be transceived, based on the normal human voice.
- sophisticated compression and coding techniques are known to enable sending and receiving human voice very efficiently over digital wireless networks.
- these voice coders or "vocoders" -typically implemented in software, DSP chips and the like -do not transmit non-voice sounds well at all. To the contrary, they are carefully designed to filter out non-voice signals.
- FIG. 1 is a simplified block diagram illustrating the typical speech path for a wireless voice call; i.e., a telephone call over the wireless telecommunications network.
- Analog voice signals from a microphone are digitized by an A/D converter, and then fed to a vocoder encoding algorithm (at 8000 samples/sec).
- the encoder produces packets of compressed data (typically one packet per 20-ms frame of audio) and feeds this data stream to a radio transceiver.
- a radio receiver passes the packets to the decoding algorithm, which then reconstructs (imperfectly) the original voice signal as a PCM stream. This PCM stream is eventually converted back into an analog voltage which is then applied to a speaker.
- an input receives digital data.
- An encoder converts the digital data into audio tones that synthesize frequency characteristics of human speech.
- the digital data is also encoded to prevent voice encoding circuitry in the telecommunications network from corrupting the synthesized audio tones representing the digital data.
- An output then outputs the synthesized audio tones to a voice channel of a digital wireless telecommunications network.
- the data carrying "tones" are sent along with simultaneous voice.
- the tones can be made short and relatively unobtrusive.
- the voice is cut off while data is transmitted through the voice channel.
- portions of the audio frequency spectrum are used for voice, while other portions are reserved for data. This aides in decoding at the receiving side.
- FIG. 2 is a simplified block diagram of an illustrative In- Vehicle System (IVS). It shows an example of the relevant portion of a typical telematics client system.
- IVS In- Vehicle System
- This client system consists of embedded hardware and software designed to operate in an automobile environment.
- the telematics software includes a "customer application," which may be almost any application, in particular one that employs data transfer via the wireless network.
- the customer application may relate to navigation or entertainment.
- the customer application conveys data (preferably data packets) to an in-band signaling modem.
- the in-band modem converts the data (along with packet headers and other overhead as appropriate) into audio tones.
- the audio "data tones" are encoded, much like voice content, and transmitted to a remote receiver.
- a mobile device encodes a digital bitstream using a particular set of modulation parameters to generate an audio signal that has different audio tones selected to pass through a vocoder of the mobile device.
- the particular set of modulation parameters is optimized for a subset of a plurality of vocoding modes without a priori knowledge of which one of the vocoding modes is currently operated by the vocoder.
- the mobile device conducts transmissions over the wireless telecommunications network through the vocoder using the particular set of modulation parameters, and monitors these transmissions for errors.
- the vocoder may be using one of the vocoding modes that are not included in the subset for which the particular set of modulation parameters is optimized, and accordingly, the modulation device switches from the particular set of modulation parameters to a different set of modulation parameters.
- FIG. 1 is a simplified block diagram illustrating the typical speech path for a wireless voice call.
- FIG. 2 is a simplified block diagram of an illustrative In-Vehicle System (IVS) with an embedded mobile phone module.
- IVS In-Vehicle System
- FIG. 3A illustrates an In-Band Signaling (IBS) modem configured to switch between modulation parameter sets.
- IBS In-Band Signaling
- FIG. 3B illustrates a flow chart showing operation of the IBS modem of FIG. 1.
- FIG. 4 illustrates a signaling diagram showing how the IBS modem shown in FIG. 1 can determine when to switch between modulation parameter sets.
- FIG. 5A illustrates a signaling diagram showing how an IBS modem on the receiving side can determine when to switch between modulation parameter sets and signal the IBS modem of FIG. 1.
- FIG. 5B is a flow chart illustrating error counting on the receiver side.
- FIG. 3A illustrates an In-Band Signaling (IBS) modem configured to switch between modulation parameter sets.
- IBS In-Band Signaling
- the system 100 includes an In-Band Signaling (IBS) modem 4 of a mobile device (also referred to as a "client") to communicate with a remote IBS modem such as an IBS modem of a server (not shown).
- IBS modem 4 is configured to modulate packet data using a first set of modulation parameters 8.
- the software 15 of the IBS modem 4 monitors for errors associated with transmission to the remote IBS modem (not shown) over the wireless voice channel 13 and, according to said error monitoring, controls whether the system 100 (including the IBS modem 4) "falls back" to a second set of modulation parameters 9 during transmission.
- the vocoders such as vocoder 5 process voice data according to a vocodmg algorithm, or vocoding codec, configured thereon.
- vocoding algorithms There are many known vocoding algorithms and the vocoders do not always reveal which particular vocoding algorithm they use.
- some vocoders such as the illustrated vocoder 5 are configured with a plurality of vocoding algorithms and will dynamically switch between which vocoding algorithm is currently utilized at any time for reasons that are outside the scope of this discussion (such dynamic switching may not necessarily be advertised by the vocoder either).
- the modulation of packet data by an IBS modem into an audio signal 10 is to get the information of the packet data into a form that will not be filtered out by vocoders of the wireless voice channel.
- different vocoding algorithms process inputs in different ways, and in some cases so differently that a modulation scheme that can pass information sufficiently accurately through one vocoding algorithm will not pass information sufficiently accurately through another vocoding algorithm.
- the BBS modem 4 is configured with at least two sets of modulation parameters, e.g. 8 and 9, which each represent a modulation scheme.
- the modulation schemes can differ in one or more of the following parameters: modulation frequency, symbol waveform length, synchronization pattern length, or full/half duplex transmission.
- One of the modulation schemes 8 and 9 is optimized for use with a subset of known vocoding algorithms, meaning that this modulation scheme will typically be able to pass information through the vocoding algorithms of the subset at high performance, but not necessarily through other vocoding algorithms.
- Another one of the modulation schemes 8 and 9 is either optimized with a different subset of known vocoding algorithms, or not optimized with any particular vocoding algorithms (characterized by wide compatibility with vocoding algorithms at a lower performance).
- the IBS modem 4 utilizes a particular one of the modulation schemes 8 and 9 in a "default mode" without analyzing which particular vocoding scheme is currently used by the vocoder 5.
- the high performance modulation scheme that is optimized for a subset of the vocoding algorithms 1 -N is used initially for transmission.
- the use of this particular modulation scheme can be referred to as "a priori" because the IBS modem 4 does not have actual information as to which one of the vocoding algorithms 1 -N (or for that matter which one of any known vocoding algorithms) the vocoder 5 is currently using.
- the software 15 then continuously monitors transmission utilizing the particular one of the modulation schemes 8 and 9. In other words, actual error monitoring information 19 is fed back to the software 15. If the error monitoring information 19 indicates that a threshold amount of errors has been reached, the software 15 causes the IBS modem 4 to switch modulation schemes, which is represented logically in FIG. 3 by the control signal 17. In the particular example shown, the IBS modem 4 "falls back" to a modulation scheme that has one or more of the following parameters with respect to the default modulation scheme: different modulation frequency, greater symbol waveform length, greater synchronization pattern length, and half duplex transmission instead of full duplex transmission.
- a modulation scheme with a greater symbol waveform length supplies more waveform information to the receiver for the purposes of identifying the transmitted symbol, and such symbols are typically more likely to be recovered correctly in a "bad channel" environment, e.g. a vocoder using a vocoding scheme that is hostile to packet data.
- the symbols are four times longer than in another modulation scheme.
- a modulation scheme with a greater synchronization pattern length uses longer synchronization patterns to signal the remote IBS modem of the start of a payload, which is less likely to result in false or missed detections on the receive side in a "bad channel” environment. Using half duplex can avoid cross-talk between the BBS modems.
- a first one of the modulation schemes has a data symbol rate of 400 baud with modulation frequencies F1/F2 and F3/F4 for the transmitter and receiver, respectively. Since the transmitter and receiver sides use different frequencies, there is no (or minimal) interference between the waveforms despite the temporal overlap, and full-duplex operation is possible.
- a second fallback one of the modulation schemes has a data symbol rate of 100 baud with a symbol length four times that of the first modulation scheme.
- the modulation frequencies are F1/F2 for both the transmitter and the receiver, and half duplex transmission mode is used.
- the second fallback modulation scheme does not use the F3/F4 modulation frequencies as the 4.8kbps EVRC-B vocoding algorithm suppresses these modulation frequencies.
- the IBS modem 4 If the IBS modem 4 does switch from a default modulation scheme to a fallback modulation scheme, the IBS modem 4 in turn signals the remote BBS modem to begin demodulating according to the fallback modulation scheme.
- the more robust fallback modulation scheme can also addresses errors attributable to conditions of the wireless voice channel medium, e.g. dropped calls and lost packets, and/or errors attributable to another network such as a circuit switched medium.
- the software 15 can also be configured to switch back to the default modulation scheme after utilizing the fallback modulation scheme for some period of time. For example, the software 15 could automatically switch back if a threshold minimum of errors are observed over a preset period of time.
- vocoders typically do not reveal which particular vocoding algorithm they use.
- "hostile" vocoders e.g. vocoders that aggressively filter out non- speech data, which have characteristics revealing their vocoding algorithm.
- One particular example is the 4.8 kbps EVRC-B vocoding algorithm used by some vocoders.
- the IBS modem 4 can be configured to, when paired with a vocoder using these particular vocoding schemes, initially modulate the digital bitstream using the fallback modulation scheme.
- a bad channel can be declared immediately, and as a result the IBS modem 4 modulates the initial portion of the digital bitstream 2 using the fallback modulation scheme.
- the modulation scheme described above can utilize a frequency modulation scheme such as Frequency-Shift Keying (FSK) modulation. If a frequency modulation scheme is used, information can be encoded with a selected pair of frequencies, or encoded with a larger set of frequencies, i.e. sets of more than two frequencies. It should be apparent that the principles described above can be applied to other modulation schemes, such as those where information is encoded using other signal characteristics including but not limited to phase or amplitude of the carrier frequency.
- FSK Frequency-Shift Keying
- FIG. 3B illustrates a flow chart showing operation of the DBS modem of FIG. 1.
- the IBS modem 4 attempts to identify a vocodmg algorithm currently used by the vocoder. If a vocoding algorithm is identified in diamond 302, then in block 303A the IBS modem 4 selects between a first modulation scheme and a second fallback modulation scheme according to the identification. Otherwise, in block 303B the IBS modem 4 modulates an initial portion of a digital bitstream using the first modulation scheme to generate an audio signal that has different audio tones for different bit values, wherein the audio tones are selected to pass through a wireless voice channel of the wireless telecommunication network unobstructed by the vocoder.
- the IBS modem 4 monitors transmissions over the wireless telecommunications network. Examples of such monitoring will be discussed later in greater detail with respect to FIGS. 4 and 5A-B. If errors are less than a preset threshold in diamond 305, then in block 306A the IBS modem 4 modulates a subsequent portion of the digital bitstream using the first modulation scheme. If errors reach the preset threshold in diamond 305, then in block 306B the IBS modem 4 modulates a subsequent portion of the digital bitstream using the second fallback modulation scheme. As discussed previously, as compared to the first modulation scheme, the second fallback modulation scheme has at least one of different modulation frequency, greater symbol waveform length, greater synchronization pattern length, and half duplex transmission instead of full duplex transmission.
- FIG. 4 illustrates a signaling diagram showing how the IBS modem shown in FIG. 1 can determine when to switch between modulation parameter sets.
- a transmitting IBS modem determines when to switch between modulation schemes based on counting non-acknowledgements.
- Non-acknowledgements include negative acknowledgements as shown in this particular illustration and any other indication of a transmission error such as a failure to receive a positive acknowledgement within a preset amount of time.
- the transmitting IBS modem modulates a first packet using a first modulation scheme and transmits the modulated packet.
- first modulation scheme For purposes of illustration, assume that the modulated packet is successfully recovered and an acknowledgement is received back at the transmitting IBS modem.
- the transmitting IBS modem modulates a second packet using the first modulation scheme. For purposes of illustration, assume that the modulated packet is not successfully recovered.
- the receiving IBS modem sends a negative acknowledgement, which as discussed previously is a type of non- acknowledgement.
- the transmitting IBS modem increments a counter for non-acknowledgements.
- the transmitting modem then re-transmits the second packet modulated using the first modulation scheme.
- the counter continues to increment on the transmitting IBS.
- a preset threshold of errors a bad channel is declared and subsequent transmissions are made using the second fallback modulation scheme.
- the threshold is reached while still attempting to communicate the second packet, so the second packet is modulated according to the second fallback modulation scheme and then transmitted. It should be understood that hysteresis can be used in counting to avoid premature switchover to the second fallback modulation scheme.
- the transmitting IBS modem also signals the receiving IBS modem to switch modulation schemes. It is preferable to send such signaling using the second fallback modulation scheme.
- the receiving IBS modem is configured to demodulate signaling sent with the second fallback modulation scheme even when operating on packet data using the first modulation scheme.
- the transmitting IBS modem can wait to initiate modulation according to the second fallback modulation scheme until the receiving IBS modem positively indicates that the receiving IBS modem has begun operating in fallback modem.
- the server performs the functions of the transmitting IBS modem.
- the mobile client performs the functions of the transmitting IBS modem.
- the transmitting IBS modem can initiate switchover back to the first modulation scheme.
- the switchover back to the first modulation scheme can occur automatically after the passage of a preset amount of time, or after the passage of the preset amount of time but only if less a particular amount of errors were detected in that time, etc. If the errors were resulting from temporarily problems with the wireless telecommunications network medium, it is possible that transmission using the first modulation scheme can be relatively error free at that time. Also, if the errors were resulting from a temporary use of a particular vocoding algorithm by a vocoder along the call path, it is possible that transmission using the first modulation scheme can be relatively error free at that time.
- FIG. 5 A illustrates a signaling diagram showing how an DBS modem on the receiving side can determine when to switch between modulation parameter sets and signal the IBS modem of FIG. 1.
- a receiving IBS modem determines when to switch between modulation schemes based on counting errors detected using Cyclic Redundancy Check (CRC) error detecting or some other form of error detection.
- CRC Cyclic Redundancy Check
- the receiving IBS modem receives a first packet modulated according to a first modulation scheme.
- the receiving IBS modem then performs a CRC on the recovered data of the first packet. For purposes of illustration, it is assumed that no errors are identified during this CRC.
- the receiving IBS modem may send an acknowledgement that the first packet was successfully recovered.
- the receiving IBS modem then performs a CRC on a second packet modulated according to the first modulation scheme. For purposes of illustration, it is assumed that this CRC identifies errors.
- the receiving IBS modem then updates a counter.
- the receiving BBS modem may send a negative acknowledgement.
- the counter continues to increment on the transmitting IBS. After the counter reaches a preset threshold of errors, a bad channel is declared. It should be understood that hysteresis can be used in counting to avoid premature switchover to the second fallback modulation scheme.
- the receiving IBS modem then sends a request to switch modulation schemes, causing the transmitting modem to re-transmit a packet using the second fallback modulation scheme (or begin sending not yet transmitted packets using the fallback modulation scheme).
- the request itself is modulated according to the second fallback modulation scheme.
- the transmitting DBS modem is configured to demodulate signaling sent with the second fallback modulation scheme even when operating on packet data using the first modulation scheme.
- FIG. 5B is a flow chart illustrating error counting on the receiver side.
- FEC Forward Error Correction
- the counter may be incremented once for each erroneous segment (a segment is combination of a header and a payload that corresponds to a portion of a packet).
- a processor readable medium is encoded with specialized instructions that, if executed, result particular operations.
- One operation includes processing a received digital bitstream using a particular modulation parameter set to generate an audio signal that has different audio tones for different bit values, wherein the audio tones are selected to pass through a wireless voice channel of a wireless telecommunication network unobstructed by a vocoder, and wherein the particular modulation parameter set is optimized for a subset of a plurality of vocoding modes without a priori knowledge of which one of the plurality of vocoding modes is currently operated by the vocoder for vocoding the audio signal.
- Another operation includes monitoring transmissions over the wireless telecommunications network to identify when an amount of errors associated with transmission over the wireless voice channel reaches a preset threshold. Another operation includes switching from the particular modulation parameter set to a different modulation parameter set if the monitoring indicates the error amount reaching the preset threshold. In some cases, at least some of the errors result from the vocoder operating a vocoding mode that is not included in the subset to which the particular modulation parameter set is optimized in association with the erroneous transmission.
- the different modulation parameter set can be designed for wider compatibability than the particular modulation parameter set, and wherein the different modulation parameter set is non-optimized with said subset of vocoding modes and/or optimized with a different subset of vocoding modes.
- Another operation can include, if the monitoring indicates the error amount reaching the preset threshold, transitioning from encoding using a first symbol type to encoding using a second symbol type having a greater duration than the first symbol type.
- Another operation can include, if the monitoring indicates the error amount reaching the preset threshold, transitioning from encoding using a first frequency pair to encoding using a second lower frequency pair, wherein the first higher frequency pair is used with the erroneous transmissions.
- Another operation can include, if the monitoring indicates the error amount reaching the preset threshold, encoding into the audio signal a first pattern, wherein the first pattern supplies more waveform information for the receiver to use in identifying a symbol than a second pattern encoded into the audio signal before the erroneous transmission is identified.
- Another operation can include, if the monitoring indicates the error amount reaching the preset threshold, transitioning from encoding using a first symbol type to encoding using a second symbol type having a greater duration than the first symbol type, transitioning from encoding using a first frequency set to encoding using a second different frequency set, and encoding into the audio signal a first pattern, wherein the first pattern supplies more waveform information for the receiver to use in identifying a symbol than a second pattern encoded into the audio signal before the erroneous transmission is identified.
- Another operation can include, if the monitoring indicates the error amount reaching the preset threshold, switching from a full-duplex transmission mode to a half-duplex transmission mode.
- Another operation can include counting a number of non-acknowledgements, wherein the switching is based on said counting.
- Another operation can include processing signaling generated by a receiving endpoint, wherein the switching is based on said signaling.
- a particular process includes processing a received digital bitstream using a particular modulation parameter set to generate a audio signal that has different audio tones for different bit values, wherein the audio tones are selected to pass through a wireless voice channel of a wireless telecommunication network unobstructed by a vocoder, wherein the particular modulation parameter set is optimized for a subset of a plurality of vocoding modes without a priori knowledge of which one of the plurality of vocoding modes is currently operated by the vocoder for vocoding the audio signal.
- Another step in the process includes feeding back actual error information from a demodulation endpoint for the transmissions.
- Another step in the process includes switching from the particular modulation parameter set to a different modulation parameter set when the fed back error information indicates errors reaching a preset threshold.
- the different modulation parameter set is non-optimized with said subset of vocoding modes and/or optimized with a different subset of vocoding modes.
- Another step in the process includes transitioning from encoding using a first symbol type to encoding using a second symbol type having a greater duration than the first symbol type when the fed back error information indicates errors reaching the preset threshold.
- Another step in the process includes transitioning from encoding using a first frequency set to encoding using a second lower frequency set when the fed back error information indicates errors reaching a preset threshold, wherein the first higher frequency set is used with the erroneous
- Another step in the process includes encoding into the audio signal a first pattern , wherein the first pattern supplies more waveform information for the receiver to use in identifying a symbol than a second pattern encoded into the audio signal before the preset threshold is reached.
- a processor readable medium is encoded with specialized instructions that, if executed, result particular operations.
- One operation includes determining whether a vocoder is currently operating a particular one or ones of a plurality of vocoding modes.
- Another operation includes processing a received digital bitstream using a particular modulation parameter set to generate a audio signal that has different audio tones for different bit values, wherein the audio tones are selected to pass through a wireless voice channel of a wireless telecommunication network unobstructed by the vocoder; wherein if the determination indicates that the vocoder is currently operating the particular one or ones of a plurality of vocoding modes, the particular modulation parameter set has a first set of parameters, and wherein otherwise the particular modulation parameter set has a second different set of parameters.
- Another operation includes monitoring transmissions over the wireless telecommunications network to identify when an amount of errors associated with transmission over the wireless voice channel reaches a preset threshold. Another operation includes, if the monitoring indicates the error amount reaching the preset threshold, adapting processing of the received digital bit stream.
- Another operation includes, if the monitoring indicates the error amount reaching the preset threshold, transitioning from encoding using a first symbol type to encoding using a second symbol type having a greater duration than the first symbol type.
- Another operation includes, if the monitoring indicates the error amount reaching the preset threshold, transitioning from encoding using a first frequency set to encoding using a second lower frequency set.
- Another operation includes, if the monitoring indicates the error amount reaching the preset threshold, encoding into the audio signal a first pattern, wherein the first pattern supplies more waveform information for the receiver to use in identifying a symbol than a second bit length encoded into the audio signal before the erroneous transmission is identified.
- Another operation includes counting a number of non-acknowledgements or processing signaling generated by a receiving endpoint, wherein the adapting is based on said counting or said signaling
- the typical navigation device is likely to include one or more processors and software executable on those processors to carry out the operations described.
- software herein in its commonly understood sense to refer to programs or routines (subroutines, objects, plug-ins, etc.), as well as data, usable by a machine or processor.
- computer programs generally comprise instructions that are stored in machine-readable or computer-readable storage media.
- Some embodiments of the present invention may include executable programs or instructions that are stored in machine- readable or computer-readable storage media, such as a digital memory. We do not imply that a
- memory associated with a given processor may be stored in the same physical device as the processor ("on-board” memory); for example, RAM or FLASH memory disposed within an integrated circuit microprocessor or the like.
- the memory comprises an independent device, such as an external disk drive, storage array, or portable FLASH key fob.
- the memory becomes "associated" with the digital processor when the two are operatively coupled together, or in communication with each other, for example by an I/O port, network connection, etc. such that the processor can read a file stored on the memory.
- Associated memory may be "read only” by design (ROM) or by virtue of permission settings, or not.
- a "software product” refers to a memory device in which a series of executable instructions are stored in a machine-readable form so that a suitable machine or processor, with appropriate access to the software product, can execute the instructions to carry out a process implemented by the
- Software products are sometimes used to distribute software. Any type of machine-readable memory, including without limitation those summarized above, may be used to make a software product. That said, it is also known that software can be distributed via electronic transmission
Abstract
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Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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BR112012009888A BR112012009888A2 (en) | 2009-11-23 | 2010-10-18 | "adaptive data transmission to a digital band modem operating over a voice channel" |
AU2010322322A AU2010322322B2 (en) | 2009-11-23 | 2010-10-18 | Adaptive data transmission for a digital in-band modem operating over a voice channel |
EP10771613.6A EP2504942B1 (en) | 2009-11-23 | 2010-10-18 | Adaptive data transmission for a digital in-band modem operating over a voice channel |
MX2012005702A MX2012005702A (en) | 2009-11-23 | 2010-10-18 | Adaptive data transmission for a digital in-band modem operating over a voice channel. |
CA2778056A CA2778056A1 (en) | 2009-11-23 | 2010-10-18 | Adaptive data transmission for a digital in-band modem operating over a voice channel |
JP2012539913A JP5709887B2 (en) | 2009-11-23 | 2010-10-18 | Adaptive data transmission for digital in-band modems operating over voice channels. |
CN201080052411.5A CN102792625B (en) | 2009-11-23 | 2010-10-18 | Adaptive data transmission for a digital in-band modem operating over a voice channel |
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US26367209P | 2009-11-23 | 2009-11-23 | |
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US8483245B2 (en) * | 2010-07-30 | 2013-07-09 | General Motors Llc | Multi-tone detection for in-band data modem link establishment in wireless networks |
US8848825B2 (en) | 2011-09-22 | 2014-09-30 | Airbiquity Inc. | Echo cancellation in wireless inband signaling modem |
US8995437B2 (en) * | 2012-02-22 | 2015-03-31 | Texas Instruments Incorporated | Transmission of segmented frames in power line communication |
US9337958B2 (en) * | 2014-02-21 | 2016-05-10 | Sogics Corporation Limited | Data transmissions over a voice channel |
WO2016203290A1 (en) * | 2015-06-15 | 2016-12-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Variable synchronization block format |
CN107925524B (en) * | 2015-08-12 | 2021-12-21 | 瑞典爱立信有限公司 | Method of determining a mode of operation for a wireless terminal |
US9973300B2 (en) * | 2016-06-09 | 2018-05-15 | Echelon Corporation | Modulation adaption method for multi-mode modems |
JP6832794B2 (en) * | 2017-06-05 | 2021-02-24 | ルネサスエレクトロニクス株式会社 | Wireless communication system |
CN108461087B (en) * | 2018-02-07 | 2020-06-30 | 河南芯盾网安科技发展有限公司 | Apparatus and method for digital signal passing through vocoder |
CN109256141B (en) * | 2018-09-13 | 2023-03-28 | 北京芯盾集团有限公司 | Method for data transmission by using voice channel |
JP7103197B2 (en) * | 2018-12-14 | 2022-07-20 | トヨタ自動車株式会社 | Communications system |
US11496970B2 (en) * | 2019-03-06 | 2022-11-08 | Qualcomm Incorporated | Support of high pathloss mode |
US11445408B2 (en) | 2019-04-17 | 2022-09-13 | Qualcomm Incorporated | High pathloss mode multiplexing |
US11477747B2 (en) | 2019-04-17 | 2022-10-18 | Qualcomm Incorporated | Synchronization signal periodicity adjustment |
US11510071B2 (en) | 2019-04-17 | 2022-11-22 | Qualcomm Incorporated | Beam direction selection for high pathloss mode operations |
US11438808B2 (en) | 2019-04-17 | 2022-09-06 | Qualcomm Incorporated | Acknowledgment messaging for resource reservations |
US11463964B2 (en) | 2019-04-17 | 2022-10-04 | Qualcomm Incorporated | Communication configuration for high pathloss operations |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050207511A1 (en) | 2004-03-17 | 2005-09-22 | General Motors Corporation. | Meethod and system for communicating data over a wireless communication system voice channel utilizing frame gaps |
WO2009149356A2 (en) * | 2008-06-05 | 2009-12-10 | Qualcomm Incorporated | System and method of an in-band modem for data communications over digital wireless communication networks |
Family Cites Families (439)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1945944A (en) | 1930-12-03 | 1934-02-06 | William W Varney | Air conditioning system and apparatus therefor |
US3742463A (en) * | 1970-03-02 | 1973-06-26 | Nielsen A C Co | Data storage and transmission system |
US3742197A (en) * | 1972-01-14 | 1973-06-26 | Stomberg Carlson Corp | Synthesis of digital signals corresponding to selected analog signals |
US3984814A (en) * | 1974-12-24 | 1976-10-05 | Honeywell Information Systems, Inc. | Retry method and apparatus for use in a magnetic recording and reproducing system |
US3971888A (en) * | 1975-04-02 | 1976-07-27 | Bell Telephone Laboratories, Incorporated | Synchronization system for variable length encoded signals |
US3985965A (en) * | 1975-07-02 | 1976-10-12 | Gte Sylvania Incorporated | Digital signal generator |
FR2379694A1 (en) * | 1977-02-03 | 1978-09-01 | Schlumberger Prospection | BOREHOLE DATA TRANSMISSION SYSTEM |
US4158748A (en) * | 1977-06-27 | 1979-06-19 | Motorola, Inc. | Apparatus for digital data synchronization |
JPS54143009A (en) * | 1978-04-28 | 1979-11-07 | Kokusai Denshin Denwa Co Ltd | Space diversity system for tdma communication system |
US4310722A (en) * | 1978-11-09 | 1982-01-12 | Bell Telephone Laboratories, Incorporated | Mobile radiotelephone station two-way ranging system |
JPS5681900A (en) * | 1979-12-10 | 1981-07-04 | Nippon Electric Co | Voice synthesizer |
US4368987A (en) * | 1980-06-25 | 1983-01-18 | The United States Of America As Represented By The Secretary Of The Navy | Conjugate-phase, remote-clock synchronizer |
CA1183950A (en) * | 1980-09-26 | 1985-03-12 | Bo Lofberg | Method for processing an information signal and means for carrying out the method |
US4539557A (en) * | 1981-10-19 | 1985-09-03 | Sunderland & South Shields Water Company | Combined communication, security and alarm radio system |
JPS58111784A (en) * | 1981-12-25 | 1983-07-02 | Nec Corp | Remote calibration system for time |
US4494211A (en) * | 1982-11-24 | 1985-01-15 | The United States Of America As Represented By The Secretary Of The Navy | Balanced system for ranging and synchronization between satellite pairs |
US4641323A (en) * | 1983-02-07 | 1987-02-03 | Tsang Chung K | Multi-phase PSK demodulator |
US4656463A (en) * | 1983-04-21 | 1987-04-07 | Intelli-Tech Corporation | LIMIS systems, devices and methods |
US4599583A (en) * | 1983-11-19 | 1986-07-08 | Fujitsu Limited | Mixed dual frequency generating system |
US4494114B1 (en) * | 1983-12-05 | 1996-10-15 | Int Electronic Tech | Security arrangement for and method of rendering microprocessor-controlled electronic equipment inoperative after occurrence of disabling event |
US4754255A (en) * | 1984-03-12 | 1988-06-28 | Sanders Rudy T | User identifying vehicle control and security device |
US4675656A (en) * | 1984-03-16 | 1987-06-23 | Narcisse Bernadine O | Out-of-range personnel monitor and alarm |
GB2161676B (en) * | 1984-07-11 | 1988-05-25 | Stc Plc | Data transmission system |
US4598272A (en) * | 1984-08-06 | 1986-07-01 | Cox Randall P | Electronic monitoring apparatus |
US5036537A (en) * | 1984-11-19 | 1991-07-30 | General Instrument Corp. | Geographic black-out method for direct broadcast satellite system |
US4685131A (en) * | 1985-03-11 | 1987-08-04 | General Instrument Corp. | Program blocking method for use in direct broadcast satellite system |
US4675863A (en) * | 1985-03-20 | 1987-06-23 | International Mobile Machines Corp. | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
US4651157A (en) * | 1985-05-07 | 1987-03-17 | Mets, Inc. | Security monitoring and tracking system |
US4630301B1 (en) * | 1985-06-04 | 1999-09-07 | Well Made Toy Mfg Co | Voice activated echo generator |
DE3683847D1 (en) * | 1985-11-27 | 1992-03-19 | Univ Boston | PATTERN CODING SYSTEM. |
CA1277400C (en) | 1986-04-09 | 1990-12-04 | Uri Rapoport | Anti-theft and locating system |
US4776003A (en) * | 1986-10-01 | 1988-10-04 | Harris Arlene J | Cellular mobile radio credit card system |
US4750197A (en) * | 1986-11-10 | 1988-06-07 | Denekamp Mark L | Integrated cargo security system |
US5227776A (en) * | 1987-03-18 | 1993-07-13 | Starefoss Carl E | Combined alarm, security and rescue system |
US4860336A (en) * | 1987-06-02 | 1989-08-22 | Motorola, Inc. | Radiotelephone credit card data communications |
US4831647A (en) * | 1987-06-02 | 1989-05-16 | Motorola, Inc. | Radiotelephone credit card data communications |
JPH0828691B2 (en) * | 1988-03-14 | 1996-03-21 | 富士通株式会社 | Frame synchronization method |
US4926444A (en) * | 1988-04-29 | 1990-05-15 | Scientific-Atlanta, Inc. | Data transmission method and apparatus by period shift keying (TSK) |
DE68922337T2 (en) * | 1988-05-17 | 1995-08-31 | Casio Computer Co Ltd | Paging communication system. |
GB8814456D0 (en) | 1988-06-17 | 1988-08-17 | Cleveland Innovative Technolog | Road vehicle locating system |
US4918425A (en) * | 1988-07-25 | 1990-04-17 | Daniel E. Ely | Monitoring and locating system for an object attached to a transponder monitored by a base station having an associated ID code |
US4918717A (en) * | 1988-08-23 | 1990-04-17 | Knight Protective Industries | Alarm system having bidirectional communication with secured area |
CA1317638C (en) * | 1988-09-09 | 1993-05-11 | Stephen B. Meads | Mobile pay telephone system |
US4914651A (en) * | 1988-09-20 | 1990-04-03 | Cellular Data, Inc. | Cellular data system |
US4977609A (en) * | 1988-10-28 | 1990-12-11 | Gte Cellular Communications Corporation | Interface circuit for telecommunications devices |
US4965821A (en) * | 1988-12-23 | 1990-10-23 | Gte Mobilnet Incorporated | Cellular mobile radiotelephone-based system for rental of mobile equipment |
US5726984A (en) | 1989-01-31 | 1998-03-10 | Norand Corporation | Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones |
US5191611A (en) * | 1989-04-03 | 1993-03-02 | Lang Gerald S | Method and apparatus for protecting material on storage media and for transferring material on storage media to various recipients |
US5214556A (en) * | 1989-04-14 | 1993-05-25 | Kilbel Joseph J | Video cassette recorder protection system |
US5428636A (en) | 1993-05-03 | 1995-06-27 | Norand Corporation | Radio frequency local area network |
IL93444A (en) * | 1989-04-27 | 1994-05-30 | Motorola Inc | Method and unit for communicating with communications systems having different operating characteristics |
US5081667A (en) * | 1989-05-01 | 1992-01-14 | Clifford Electronics, Inc. | System for integrating a cellular telephone with a vehicle security system |
US5668803A (en) | 1989-06-29 | 1997-09-16 | Symbol Technologies, Inc. | Protocol for packet data communication system |
WO1991007044A1 (en) | 1989-10-31 | 1991-05-16 | Intelligence Technology Corporation | Data and voice transmission over a cellular telephone system |
US4941155A (en) * | 1989-11-16 | 1990-07-10 | Bell Communications Research, Inc. | Method and circuitry for symbol timing and frequency offset estimation in time division multiple access radio systems |
US5025455A (en) * | 1989-11-30 | 1991-06-18 | The United States Of America As Represented By The Administer, National Aeronautics And Space Administration | Phase ambiguity resolution for offset QPSK modulation systems |
US5301353A (en) * | 1990-02-12 | 1994-04-05 | Motorola, Inc. | Communication system and apparatus |
GB2241623A (en) | 1990-02-28 | 1991-09-04 | Philips Electronic Associated | Vehicle location system |
US5014344A (en) * | 1990-03-19 | 1991-05-07 | Motorola, Inc. | Method for synchronizing the transmissions in a simulcast transmission system |
US5127041A (en) | 1990-06-01 | 1992-06-30 | Spectrum Information Technologies, Inc. | System and method for interfacing computers to diverse telephone networks |
US5528232A (en) | 1990-06-15 | 1996-06-18 | Savi Technology, Inc. | Method and apparatus for locating items |
US5119504A (en) * | 1990-07-19 | 1992-06-02 | Motorola, Inc. | Position aided subscriber unit for a satellite cellular system |
US5043736B1 (en) | 1990-07-27 | 1994-09-06 | Cae Link Corp | Cellular position location system |
US5134644A (en) * | 1990-08-17 | 1992-07-28 | Senses International | Data communication device |
FR2666946B1 (en) * | 1990-09-17 | 1992-12-04 | Inst Francais Du Petrole | METHOD AND DEVICE FOR SYNCHRONIZING ON AN EXTERNAL EVENT THE SAMPLING OF MEASUREMENT SIGNALS BY AN OVER-SAMPLING TYPE SCANNING ASSEMBLY. |
US5201071A (en) * | 1990-09-26 | 1993-04-06 | Rockwell International Corporation | Method and apparatus for reducing the peak envelope voltage of an RF transmitter while maintaining signal average power |
US5365577A (en) | 1990-09-27 | 1994-11-15 | Radish Communications Systems, Inc. | Telecommunication display system |
JP3143123B2 (en) * | 1990-11-06 | 2001-03-07 | マイクロン・テクノロジー・インコーポレイテッド | Dual mode electronic identification system |
US5218618A (en) * | 1990-11-07 | 1993-06-08 | Hughes Aircraft Company | Cellular telephone service using spread spectrum transmission |
US5212831A (en) * | 1990-11-28 | 1993-05-18 | Bell Communications Research, Inc. | Method and apparatus for autonomous adaptive frequency assignment in TDMA portable radio systems |
DE4038430A1 (en) | 1990-12-01 | 1992-06-04 | Basf Ag | HERBICIDES N - ((1,3,5-TRIAZIN-2-YL) -AMINOCARBONYL) BENZOLSULFONAMIDE |
US5305384A (en) * | 1990-12-04 | 1994-04-19 | Chips International, Inc. | Apparatus, system and method for transmitting secure signals over narrow spaced channels |
US5734981A (en) | 1991-01-17 | 1998-03-31 | Highwaymaster Communications, Inc. | Method and apparatus for call delivery to a mobile unit |
US5155689A (en) | 1991-01-17 | 1992-10-13 | By-Word Technologies, Inc. | Vehicle locating and communicating method and apparatus |
CA2063901C (en) | 1991-03-25 | 2002-08-13 | Arunas G. Slekys | Cellular data overlay system |
MX9201267A (en) | 1991-03-29 | 1992-10-01 | Ericsson Telefon Ab L M | ROUTING OF AUXILIARY COMMUNICATION SERVICE. |
US5119403A (en) * | 1991-04-09 | 1992-06-02 | Racal Data Communications Inc. | Superframes |
US5225842A (en) | 1991-05-09 | 1993-07-06 | Navsys Corporation | Vehicle tracking system employing global positioning system (gps) satellites |
FI96564C (en) | 1991-07-08 | 1996-07-10 | Nokia Mobile Phones Ltd | Private telephone number in cellular telephone system |
US5347272A (en) | 1991-09-13 | 1994-09-13 | Fuji Xerox Co., Ltd. | System for determining communication routes in a network |
US5208446A (en) * | 1991-09-19 | 1993-05-04 | Martinez Jerry R | Method and apparatus for validating credit information during home delivery of order |
US5390216A (en) | 1991-11-02 | 1995-02-14 | Robert Bosch Gmbh | Synchronization method for a mobile radiotelephone |
JP2500162B2 (en) | 1991-11-11 | 1996-05-29 | 住友金属工業株式会社 | High strength duplex stainless steel with excellent corrosion resistance |
FR2684507B1 (en) | 1991-11-29 | 1994-09-30 | Sagem | SEMI-DUPLEX MODEM FOR GSM RADIO TELEPHONE NETWORK. |
US5379224A (en) | 1991-11-29 | 1995-01-03 | Navsys Corporation | GPS tracking system |
US6266008B1 (en) | 1991-12-10 | 2001-07-24 | Charles D. Huston | System and method for determining freight container locations |
GB2262630B (en) | 1991-12-14 | 1996-04-10 | Technophone Ltd | Apparatus with menu-selected functions |
US5546445A (en) | 1991-12-26 | 1996-08-13 | Dennison; Everett | Cellular telephone system that uses position of a mobile unit to make call management decisions |
US5235633A (en) * | 1991-12-26 | 1993-08-10 | Everett Dennison | Cellular telephone system that uses position of a mobile unit to make call management decisions |
US5539810A (en) | 1992-01-27 | 1996-07-23 | Highwaymaster Communications, Inc. | Data messaging in a communications network |
US5334974A (en) | 1992-02-06 | 1994-08-02 | Simms James R | Personal security system |
US5203012A (en) * | 1992-02-10 | 1993-04-13 | Motorola, Inc. | Method and apparatus for optimum channel assignment |
CA2089123A1 (en) | 1992-03-04 | 1993-09-05 | Robert Edwin Penny, Jr. | Position locating transceiver |
US5245634A (en) * | 1992-03-23 | 1993-09-14 | Motorola, Inc. | Base-site synchronization in a communication system |
US5282204A (en) * | 1992-04-13 | 1994-01-25 | Racotek, Inc. | Apparatus and method for overlaying data on trunked radio |
US5223844B1 (en) * | 1992-04-17 | 2000-01-25 | Auto Trac Inc | Vehicle tracking and security system |
US5410541A (en) | 1992-05-04 | 1995-04-25 | Ivon International, Inc. | System for simultaneous analog and digital communications over an analog channel |
US5396653A (en) | 1992-06-05 | 1995-03-07 | Nokia Mobile Phones Ltd. | Cellular telephone signalling circuit operable with different cellular telephone systems |
GB9215662D0 (en) | 1992-07-23 | 1992-09-09 | Workspace Technologies Limited | Conference assisting apparatus |
AU670955B2 (en) | 1992-08-04 | 1996-08-08 | Koninklijke Philips Electronics N.V. | Mobile radio system |
FI95983C (en) | 1992-08-17 | 1996-04-10 | Nokia Telecommunications Oy | Arrangement for facsimile transmission in a digital cellular radio network |
US5289372A (en) * | 1992-08-18 | 1994-02-22 | Loral Aerospace Corp. | Global equipment tracking system |
JP2805565B2 (en) | 1992-09-21 | 1998-09-30 | エヌ・ティ・ティ移動通信網株式会社 | Control channel selection method in mobile station |
US5410739A (en) | 1992-09-29 | 1995-04-25 | The Titan Corporation | Variable data message communication over voice communication channel |
US5418537A (en) | 1992-11-18 | 1995-05-23 | Trimble Navigation, Ltd. | Location of missing vehicles |
US5365450A (en) | 1992-12-17 | 1994-11-15 | Stanford Telecommunications, Inc. | Hybrid GPS/data line unit for rapid, precise, and robust position determination |
US5726893A (en) | 1992-12-17 | 1998-03-10 | Stanford Telecommunications, Inc. | Cellular telephone with voice-in-data modem |
SG45250A1 (en) | 1993-01-04 | 1998-01-16 | Intel Corp | Simultaneous transfer of control information with voice and data over a public switched telephone network line |
US5333175A (en) | 1993-01-28 | 1994-07-26 | Bell Communications Research, Inc. | Method and apparatus for dynamic power control in TDMA portable radio systems |
US5331635A (en) * | 1993-02-12 | 1994-07-19 | Fuji Xerox Co., Ltd. | Network system having function of updating routing information |
US5587715A (en) | 1993-03-19 | 1996-12-24 | Gps Mobile, Inc. | Method and apparatus for tracking a moving object |
AU6279794A (en) | 1993-04-01 | 1994-10-24 | Bruno Robert | System for selectively positioning and tracking a movable object or individual |
US5420592A (en) | 1993-04-05 | 1995-05-30 | Radix Technologies, Inc. | Separated GPS sensor and processing system for remote GPS sensing and centralized ground station processing for remote mobile position and velocity determinations |
US5509035A (en) | 1993-04-14 | 1996-04-16 | Qualcomm Incorporated | Mobile station operating in an analog mode and for subsequent handoff to another system |
US5510797A (en) | 1993-04-15 | 1996-04-23 | Trimble Navigation Limited | Provision of SPS timing signals |
US5388247A (en) | 1993-05-14 | 1995-02-07 | Digital Equipment Corporation | History buffer control to reduce unnecessary allocations in a memory stream buffer |
US5673305A (en) | 1993-05-14 | 1997-09-30 | Worldwide Notification Systems, Inc. | Apparatus and method for tracking and reporting the location of a motor vehicle |
BR9405417A (en) | 1993-06-07 | 1999-09-08 | Radio Local Area Networks Inc | Network interconnection controller, methods of designating a master node on a network, changing the frequency on a network, choosing an optimal transmission power level for a first node and transmitting a plurality of data packets |
WO1994029824A1 (en) | 1993-06-10 | 1994-12-22 | Direkt, Inc. | Preselected distance monitoring and locating system |
US5389934A (en) | 1993-06-21 | 1995-02-14 | The Business Edge Group, Inc. | Portable locating system |
DE69434927T2 (en) | 1993-06-25 | 2007-11-15 | Matsushita Electric Industrial Co., Ltd., Kadoma | Waveform shaping method and waveform shaping device |
JP2518156B2 (en) | 1993-07-19 | 1996-07-24 | 日本電気株式会社 | Channel allocation method for wireless communication system |
US5363375A (en) | 1993-07-30 | 1994-11-08 | Bell Communications Research, Inc. | Method and apparatus for synchronizing timing among radio ports in wireless communications systems using hierarchical scheme |
US5363376A (en) | 1993-07-30 | 1994-11-08 | Bell Communications Research, Inc. | Method and apparatus for synchronizing timing among radio ports in wireless communications systems |
EP0637152A1 (en) | 1993-07-30 | 1995-02-01 | International Business Machines Corporation | Method and apparatus to speed up the path selection in a packet switching network |
US5479482A (en) | 1993-08-30 | 1995-12-26 | At&T Corp. | Cellular terminal for providing public emergency call location information |
US5388147A (en) | 1993-08-30 | 1995-02-07 | At&T Corp. | Cellular telecommunication switching system for providing public emergency call location information |
GB2286507B (en) | 1993-08-31 | 1998-01-14 | Ericsson Ge Mobile Communicat | Apparatus for storing messages in a cellular mobile terminal |
US5497149A (en) | 1993-09-02 | 1996-03-05 | Fast; Ray | Global security system |
US5438337A (en) | 1993-09-24 | 1995-08-01 | Northrop Grumman Corporation | Navigation system using re-transmitted GPS |
US5440491A (en) | 1993-10-19 | 1995-08-08 | Kabushiki Kaisha Toshiba | Pseudo GPS signal transmitting system in a base station |
US5544222A (en) | 1993-11-12 | 1996-08-06 | Pacific Communication Sciences, Inc. | Cellular digtial packet data mobile data base station |
US5479475A (en) | 1993-11-15 | 1995-12-26 | Qualcomm Incorporated | Method and system for providing communication between standard terminal equipment using a remote communication unit |
US5557254A (en) | 1993-11-16 | 1996-09-17 | Mobile Security Communications, Inc. | Programmable vehicle monitoring and security system having multiple access verification devices |
US5519403A (en) | 1993-11-29 | 1996-05-21 | Motorola, Inc. | Global positioning system communications multi-interface |
JP3107691B2 (en) | 1993-12-03 | 2000-11-13 | 株式会社東芝 | Semiconductor memory device and method of manufacturing the same |
US5892454A (en) | 1993-12-21 | 1999-04-06 | Trimble Navigation Ltd. | Hybrid monitoring of location of a site confinee |
US6181253B1 (en) | 1993-12-21 | 2001-01-30 | Trimble Navigation Limited | Flexible monitoring of location and motion |
US5581599A (en) | 1993-12-30 | 1996-12-03 | Northern Telecom Limited | Cordless telephone terminal |
US5479480A (en) | 1993-12-30 | 1995-12-26 | At&T Corp. | Dual mode cellular modem |
US5555286A (en) | 1994-01-31 | 1996-09-10 | Tendler Technologies, Inc. | Cellular phone based automatic emergency vessel/vehicle location system |
US5459469A (en) | 1994-02-04 | 1995-10-17 | Stanford Telecommunications, Inc. | Air traffic surveillance and communication system |
CA2170737A1 (en) | 1994-02-07 | 1995-08-10 | Harold Ii Pace | Mobile location reporting apparatus and methods |
US5422816A (en) | 1994-02-22 | 1995-06-06 | Trimble Navigation Limited | Portable personal navigation tracking system |
US5483549A (en) | 1994-03-04 | 1996-01-09 | Stanford Telecommunications, Inc. | Receiver having for charge-coupled-device based receiver signal processing |
US5577105A (en) | 1994-03-11 | 1996-11-19 | U.S. Robotics, Inc. | Telephone call routing and switching techniques for data communications |
EP0698974B1 (en) | 1994-03-11 | 2004-02-18 | NTT DoCoMo, Inc. | Time diversity communication system |
US5381129A (en) | 1994-03-23 | 1995-01-10 | Radio Systems, Inc. | Wireless pet containment system |
US5450130A (en) | 1994-03-30 | 1995-09-12 | Radius Inc. | Method and system for cell based image data compression |
US5625668A (en) | 1994-04-12 | 1997-04-29 | Trimble Navigation Limited | Position reporting cellular telephone |
US5590396A (en) | 1994-04-20 | 1996-12-31 | Ericsson Inc. | Method and apparatus for a deep-sleep mode in a digital cellular communication system |
US5504491A (en) | 1994-04-25 | 1996-04-02 | Chapman; Robert W. | Global status and position reporting system |
ES2101629B1 (en) | 1994-04-29 | 1998-03-01 | Alcatel Standard Electrica | FIXED CELL TERMINAL. |
US5461390A (en) | 1994-05-27 | 1995-10-24 | At&T Ipm Corp. | Locator device useful for house arrest and stalker detection |
GB2290005B (en) | 1994-05-28 | 1998-09-09 | Motorola Ltd | Communications system |
JPH088983A (en) | 1994-06-15 | 1996-01-12 | Fujitsu Ltd | Inter-device digital signal transmitting method, digital signal transmitter/receiver, digital signal transmitter and digital signal receiver |
US5543789A (en) | 1994-06-24 | 1996-08-06 | Shields Enterprises, Inc. | Computerized navigation system |
DE4424412A1 (en) | 1994-07-12 | 1996-01-18 | Esg Elektroniksystem Und Logis | Radio telecommunication system with satellite navigation for both mobile telephony and VHF radio reception |
US5550551A (en) | 1994-07-25 | 1996-08-27 | At&T Corp. | Position monitoring system and method |
US5619684A (en) | 1994-07-25 | 1997-04-08 | International Business Machines Corporation | Method and apparatus for consistent user interface in a multiple application personal communications device |
US6038310A (en) | 1994-08-01 | 2000-03-14 | British Telecommunications Public Limited Company | Service node for a telephony network |
US5630206A (en) | 1994-08-11 | 1997-05-13 | Stanford Telecommunications, Inc. | Position enhanced cellular telephone system |
US5515043A (en) | 1994-08-17 | 1996-05-07 | Berard; Alfredo J. | Cellular/GPS system for vehicle tracking |
GB9417600D0 (en) | 1994-09-01 | 1994-10-19 | British Telecomm | Navigation information system |
US5565858A (en) | 1994-09-14 | 1996-10-15 | Northrop Grumman Corporation | Electronic inventory system for stacked containers |
US6334219B1 (en) | 1994-09-26 | 2001-12-25 | Adc Telecommunications Inc. | Channel selection for a hybrid fiber coax network |
US5732326A (en) | 1994-09-30 | 1998-03-24 | Fujitsu Limited | Information guiding system and method of preventing borrower of portable terminal unit from forgetting to return it |
US6121922A (en) | 1994-10-12 | 2000-09-19 | Veridian Erim International, Inc. | Tracking system using miniaturized concealable communications module |
US5566173A (en) | 1994-10-12 | 1996-10-15 | Steinbrecher Corporation | Communication system |
US5650770A (en) | 1994-10-27 | 1997-07-22 | Schlager; Dan | Self-locating remote monitoring systems |
JP2596388B2 (en) | 1994-10-28 | 1997-04-02 | 日本電気株式会社 | Digital cordless telephone system |
US5594425A (en) | 1994-10-31 | 1997-01-14 | Peoplenet, Inc. | Locator device |
US5786789A (en) | 1994-11-14 | 1998-07-28 | Trimble Navigation Limited | GPS and cellphone unit having add-on modules |
US6269392B1 (en) | 1994-11-15 | 2001-07-31 | Christian Cotichini | Method and apparatus to monitor and locate an electronic device using a secured intelligent agent |
US6300863B1 (en) | 1994-11-15 | 2001-10-09 | Absolute Software Corporation | Method and apparatus to monitor and locate an electronic device using a secured intelligent agent via a global network |
US5913170A (en) | 1994-11-16 | 1999-06-15 | Highwaymaster Communications, Inc. | Locating system and method using a mobile communications network |
US5576716A (en) | 1994-12-07 | 1996-11-19 | Sadler; Kermit M. | Owner oriented system for locating lost or stolen property |
US6226529B1 (en) | 1994-12-08 | 2001-05-01 | Itt Manufacturing Enterprises, Inc. | System for providing a simultaneous data and voice channel within a single channel of a portable cellular telephone to provide position-enhanced cellular services (PECS) |
US5517683A (en) | 1995-01-18 | 1996-05-14 | Cycomm Corporation | Conformant compact portable cellular phone case system and connector |
DE19501517C1 (en) | 1995-01-19 | 1996-05-02 | Siemens Ag | Speech information transmission method |
US6009325A (en) | 1995-02-01 | 1999-12-28 | Motorola, Inc. | Method of and apparatus for operating a cellular phone in one of two modes |
US5724243A (en) | 1995-02-10 | 1998-03-03 | Highwaymaster Communications, Inc. | Method and apparatus for determining expected time of arrival |
KR0140130B1 (en) | 1995-03-07 | 1998-07-01 | 김주용 | Digital communication system |
US5797091A (en) | 1995-03-07 | 1998-08-18 | Xypoint Corporation | Personal communication system and method of use |
US5608375A (en) | 1995-03-20 | 1997-03-04 | Wheelock Inc. | Synchronized visual/audible alarm system |
CA2171485C (en) | 1995-03-23 | 1999-10-12 | Shrirang Jangi | Dtmf tone passer in a voice communication system |
FR2732509B1 (en) | 1995-03-31 | 1997-06-13 | Sgs Thomson Microelectronics | BOX FOR MOUNTING AN INTEGRATED CIRCUIT CHIP |
US5812522A (en) | 1995-03-31 | 1998-09-22 | Airtouch Communications, Inc. | Location-ruled radio-integrated network |
US5532690A (en) | 1995-04-04 | 1996-07-02 | Itt Corporation | Apparatus and method for monitoring and bounding the path of a ground vehicle |
US5572204A (en) | 1995-04-10 | 1996-11-05 | Ford Motor Company | Vehicular emergency message system |
US5686910A (en) | 1995-04-10 | 1997-11-11 | Ford Motor Company | Vehicular emergency message system with automatic periodic call-in |
US5687215A (en) | 1995-04-10 | 1997-11-11 | Ford Motor Company | Vehicular emergency message system |
US5798693A (en) | 1995-06-07 | 1998-08-25 | Engellenner; Thomas J. | Electronic locating systems |
US5691980A (en) | 1995-06-07 | 1997-11-25 | General Electric Company | Local communication network for power reduction and enhanced reliability in a multiple node tracking system |
US5752186A (en) | 1995-06-07 | 1998-05-12 | Jeman Technologies, Inc. | Access free wireless telephony fulfillment service system |
US5717406A (en) | 1995-06-07 | 1998-02-10 | Sanconix Inc. | Enhanced position calculation |
FI952844A (en) | 1995-06-09 | 1996-12-10 | Nokia Mobile Phones Ltd | Procedure for improving transmission |
US5752193A (en) | 1995-09-01 | 1998-05-12 | Motorola, Inc. | Method and apparatus for communicating in a wireless communication system |
US5774837A (en) | 1995-09-13 | 1998-06-30 | Voxware, Inc. | Speech coding system and method using voicing probability determination |
US5874914A (en) | 1995-10-09 | 1999-02-23 | Snaptrack, Inc. | GPS receiver utilizing a communication link |
US6002363A (en) | 1996-03-08 | 1999-12-14 | Snaptrack, Inc. | Combined GPS positioning system and communications system utilizing shared circuitry |
US5831574A (en) | 1996-03-08 | 1998-11-03 | Snaptrack, Inc. | Method and apparatus for determining the location of an object which may have an obstructed view of the sky |
US5841396A (en) | 1996-03-08 | 1998-11-24 | Snaptrack, Inc. | GPS receiver utilizing a communication link |
US6131067A (en) | 1995-10-09 | 2000-10-10 | Snaptrack, Inc. | Client-server based remote locator device |
US5884214A (en) | 1996-09-06 | 1999-03-16 | Snaptrack, Inc. | GPS receiver and method for processing GPS signals |
US5825327A (en) | 1996-03-08 | 1998-10-20 | Snaptrack, Inc. | GPS receivers and garments containing GPS receivers and methods for using these GPS receivers |
US5805576A (en) | 1995-10-18 | 1998-09-08 | Cellular Telecom, Ltd. | Method and apparatus for TDMA wireless communication employing collector arrays for range extension |
US5627517A (en) | 1995-11-01 | 1997-05-06 | Xerox Corporation | Decentralized tracking and routing system wherein packages are associated with active tags |
US5991279A (en) | 1995-12-07 | 1999-11-23 | Vistar Telecommunications Inc. | Wireless packet data distributed communications system |
WO1997021314A1 (en) | 1995-12-07 | 1997-06-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Emergency call handling in a cellular telecommunications system |
US5826188A (en) | 1995-12-07 | 1998-10-20 | Motorola, Inc. | Method and apparatus for handing off calls between differing radio telecommunication networks |
JPH09172685A (en) | 1995-12-19 | 1997-06-30 | Sony Corp | Radio communication system, communication method and mobile communication terminal equipment |
US5835907A (en) | 1995-12-20 | 1998-11-10 | Mci Communications Corporation | Emergency PCS system for identification and notification of a subscriber's location |
US5918180A (en) | 1995-12-22 | 1999-06-29 | Dimino; Michael | Telephone operable global tracking system for vehicles |
US5842141A (en) | 1996-01-01 | 1998-11-24 | Nokia Mobile Phones Limited | Mobile terminal having user-actuated pager mode |
US5960363A (en) | 1996-01-24 | 1999-09-28 | Sony Corporation | Tone generating apparatus for a cellular telephone to simulate tones normally sensed by a user of a land-line telephone |
US5778024A (en) * | 1996-02-01 | 1998-07-07 | Qualcomm Incorporated | Dual-mode communications processor |
JP2785789B2 (en) | 1996-02-09 | 1998-08-13 | 日本電気株式会社 | Digital mobile communication system |
US6133874A (en) | 1996-03-08 | 2000-10-17 | Snaptrack, Inc. | Method and apparatus for acquiring satellite positioning system signals |
US5748083A (en) | 1996-03-11 | 1998-05-05 | Security Solutions Plus | Computer asset protection apparatus and method |
US5815114A (en) | 1996-04-05 | 1998-09-29 | Discovision Associates | Positioning system and method |
US5850392A (en) | 1996-04-10 | 1998-12-15 | Ericsson Inc. | Spread spectrum random access systems and methods for time division multiple access radiotelephone communication systems |
US6173194B1 (en) | 1996-04-15 | 2001-01-09 | Nokia Mobile Phones Limited | Mobile terminal having improved user interface |
US5712619A (en) | 1996-04-18 | 1998-01-27 | Simkin; Alan C. | Global positioning system personal alarm |
US5637355A (en) | 1996-04-22 | 1997-06-10 | Rmt, Inc. | Method of nonhazardous removal of paint containing heavy metals and coating preparation for performing the same |
JP3606498B2 (en) | 1996-04-26 | 2005-01-05 | 三菱電機株式会社 | Portable information terminal device |
US5864578A (en) | 1996-04-29 | 1999-01-26 | Golden Bridge Technology, Inc. | Matched filter-based handoff method and apparatus |
US6067457A (en) | 1996-04-30 | 2000-05-23 | Motorola, Inc. | Method for dynamically assigning priority to a call |
US5838237A (en) | 1996-05-22 | 1998-11-17 | Revell; Graeme Charles | Personal alarm device |
US5703598A (en) | 1996-05-24 | 1997-12-30 | Emmons; Ardath H. | Method and system for tracking stolen property |
US5796808A (en) | 1997-01-09 | 1998-08-18 | Paradyne Corporation | System and method for automatically selecting the mode of communication between a plurality of modems |
US5892441A (en) | 1996-06-26 | 1999-04-06 | Par Government Systems Corporation | Sensing with active electronic tags |
US5804810A (en) | 1996-06-26 | 1998-09-08 | Par Government Systems Corporation | Communicating with electronic tags |
US5774876A (en) | 1996-06-26 | 1998-06-30 | Par Government Systems Corporation | Managing assets with active electronic tags |
US5825283A (en) | 1996-07-03 | 1998-10-20 | Camhi; Elie | System for the security and auditing of persons and property |
US5784422A (en) | 1996-08-05 | 1998-07-21 | Transcrypt International, Inc. | Apparatus and method for accurate synchronization with inbound data packets at relatively low sampling rates |
JPH1047982A (en) | 1996-08-06 | 1998-02-20 | Sony Corp | Instrument and method for measuring location, device and method for navigation, information service method, and automobile |
US5731757A (en) | 1996-08-19 | 1998-03-24 | Pro Tech Monitoring, Inc. | Portable tracking apparatus for continuous position determination of criminal offenders and victims |
US5881373A (en) | 1996-08-28 | 1999-03-09 | Telefonaktiebolaget Lm Ericsson | Muting a microphone in radiocommunication systems |
US6185427B1 (en) | 1996-09-06 | 2001-02-06 | Snaptrack, Inc. | Distributed satellite position system processing and application network |
US6014376A (en) | 1996-09-18 | 2000-01-11 | Motorola, Inc. | Method for over-the-air synchronization adjustment in a communication system |
US6069570A (en) | 1996-09-20 | 2000-05-30 | Atx Technologies, Inc. | Asset location system |
US5864763A (en) | 1996-09-24 | 1999-01-26 | Qualcomm Inc | Digital wireless telephone system interface for analog telecommunications equipment |
US5961608A (en) | 1996-10-04 | 1999-10-05 | Sony Corporation | Modem and communications control selection |
US5790842A (en) | 1996-10-11 | 1998-08-04 | Divicom, Inc. | Processing system with simultaneous utilization of multiple clock signals |
US5963130A (en) | 1996-10-28 | 1999-10-05 | Zoltar Satellite Alarm Systems, Inc. | Self-locating remote monitoring systems |
US6014089A (en) | 1996-10-28 | 2000-01-11 | Tracy Corporation Ii | Method for transmitting data using a digital control channel of a wireless network |
US6018654A (en) | 1996-10-29 | 2000-01-25 | Ericsson Inc | Method and apparatus for downloading tones to mobile terminals |
US5978676A (en) | 1996-11-15 | 1999-11-02 | Telefonaktiebolaget L/M Ericsson (Publ) | Inband signal converter, and associated method, for a digital communication system |
US5771001A (en) | 1996-11-18 | 1998-06-23 | Cobb; Marlon J. | Personal alarm system |
US5748084A (en) | 1996-11-18 | 1998-05-05 | Isikoff; Jeremy M. | Device security system |
US5856986A (en) | 1996-11-25 | 1999-01-05 | Texas Instruments Incorporated | Synchronization field pattern selection |
US6011973A (en) | 1996-12-05 | 2000-01-04 | Ericsson Inc. | Method and apparatus for restricting operation of cellular telephones to well delineated geographical areas |
US5911129A (en) | 1996-12-13 | 1999-06-08 | Intel Corporation | Audio font used for capture and rendering |
KR100276519B1 (en) | 1996-12-26 | 2000-12-15 | 기노시타 고타 | Method for handover |
GB2320862B (en) | 1996-12-27 | 2001-11-21 | Roke Manor Research | Data communications system |
US6122514A (en) | 1997-01-03 | 2000-09-19 | Cellport Systems, Inc. | Communications channel selection |
US5946304A (en) | 1997-01-08 | 1999-08-31 | Paradyne Corporation | Method and apparatus for controlling the operation of a modem capable of transmitting and receiving both voice and data signals |
US5742233A (en) | 1997-01-21 | 1998-04-21 | Hoffman Resources, Llc | Personal security and tracking system |
US5940598A (en) | 1997-01-28 | 1999-08-17 | Bell Atlantic Network Services, Inc. | Telecommunications network to internetwork universal server |
GB2321827B (en) | 1997-01-31 | 2001-06-13 | Ericsson Telefon Ab L M | Telecommunications system |
GB2321812B (en) | 1997-02-01 | 2001-02-21 | Ico Services Ltd | User terminal positioning system and method employing external signals |
US5812087A (en) | 1997-02-03 | 1998-09-22 | Snaptrack, Inc. | Method and apparatus for satellite positioning system based time measurement |
US6055434A (en) | 1997-02-11 | 2000-04-25 | Ericsson Inc. | Method and system for locating a mobile station within a mobile telecommunications network |
US6289041B1 (en) | 1997-02-11 | 2001-09-11 | Snaptrack, Inc. | Fast Acquisition, high sensitivity GPS receiver |
US6359923B1 (en) | 1997-12-18 | 2002-03-19 | At&T Wireless Services, Inc. | Highly bandwidth efficient communications |
US5970130A (en) | 1997-02-26 | 1999-10-19 | Dynamic Telcom Engineering, L.L.C. | Independent central office which provides local and long distance calling services to new residential and commercial developments |
US6470046B1 (en) | 1997-02-26 | 2002-10-22 | Paradyne Corporation | Apparatus and method for a combined DSL and voice system |
US5933468A (en) | 1997-03-06 | 1999-08-03 | Telefonaktiebolaget L M Ericsson (Publ) | Continuous synchronization adjustment in a telecommunications system |
US6304637B1 (en) | 1997-03-14 | 2001-10-16 | Itxc, Inc. | Method and apparatus for establishing and facilitating a direct quality voice call to a telephone extension on behalf of a client computer |
US6175307B1 (en) | 1997-03-18 | 2001-01-16 | Digital Security Controls Ltd. | Security system with audible link and two-way communication |
US6138224A (en) | 1997-04-04 | 2000-10-24 | International Business Machines Corporation | Method for paging software wavetable synthesis samples |
JP3940200B2 (en) | 1997-04-09 | 2007-07-04 | 株式会社イシダ | Bag making and packaging machine |
US5886634A (en) | 1997-05-05 | 1999-03-23 | Electronic Data Systems Corporation | Item removal system and method |
CN1310555C (en) | 1997-05-19 | 2007-04-11 | 爱尔比奎特公司 | System and method to communicate time stamped, 3-axis geo-position data within telecommunication networks |
US7164662B2 (en) | 1997-05-19 | 2007-01-16 | Airbiquity, Inc. | Network delay identification method and apparatus |
US6493338B1 (en) * | 1997-05-19 | 2002-12-10 | Airbiquity Inc. | Multichannel in-band signaling for data communications over digital wireless telecommunications networks |
US6771629B1 (en) | 1999-01-15 | 2004-08-03 | Airbiquity Inc. | In-band signaling for synchronization in a voice communications network |
US6690681B1 (en) * | 1997-05-19 | 2004-02-10 | Airbiquity Inc. | In-band signaling for data communications over digital wireless telecommunications network |
USD395250S (en) | 1997-05-29 | 1998-06-16 | Garmin Corporation | Combined hand held communication receiver and GPS device |
US6356560B1 (en) | 1997-05-30 | 2002-03-12 | Adtran, Inc. | Arbitration mechanism for statistically multiplexed frame relay switching system |
US6140956A (en) | 1997-06-25 | 2000-10-31 | Cellutrac, Inc. | Vehicle tracking and security system incorporating simultaneous voice and data communication |
US6522265B1 (en) | 1997-06-25 | 2003-02-18 | Navox Corporation | Vehicle tracking and security system incorporating simultaneous voice and data communication |
EP0889610B1 (en) | 1997-07-01 | 2005-12-21 | Alcatel | SPS synchronization method |
US5930340A (en) | 1997-07-07 | 1999-07-27 | Advanced Micro Devices | Device and method for isolating voice and data signals on a common carrier |
US6122271A (en) | 1997-07-07 | 2000-09-19 | Motorola, Inc. | Digital communication system with integral messaging and method therefor |
US5963134A (en) | 1997-07-24 | 1999-10-05 | Checkpoint Systems, Inc. | Inventory system using articles with RFID tags |
US6707421B1 (en) | 1997-08-19 | 2004-03-16 | Siemens Vdo Automotive Corporation | Driver information system |
JP2931276B2 (en) | 1997-09-04 | 1999-08-09 | 豊喜 笹倉 | Equipment use restriction device |
US6301480B1 (en) | 1997-09-05 | 2001-10-09 | @Track Communications, Inc. | System and method for communicating using a voice network and a data network |
US6076099A (en) | 1997-09-09 | 2000-06-13 | Chen; Thomas C. H. | Method for configurable intelligent-agent-based wireless communication system |
BR9812246A (en) | 1997-09-18 | 2000-07-18 | Nokia Mobile Phones Ltd | Time diversity in tdma system |
US6212207B1 (en) | 1997-09-26 | 2001-04-03 | 3Com Corporation | Robbed bit signal detection and compensation |
US6006189A (en) | 1997-10-10 | 1999-12-21 | Nortel Networks Corporation | Method and apparatus for storing and forwarding voice signals |
US6295461B1 (en) | 1997-11-03 | 2001-09-25 | Intermec Ip Corp. | Multi-mode radio frequency network system |
US6272315B1 (en) | 1997-12-03 | 2001-08-07 | Northern Telecom Limited | Mobile satellite system/terrestrial wireless system interworking techniques |
US6081523A (en) | 1997-12-05 | 2000-06-27 | Advanced Micro Devices, Inc. | Arrangement for transmitting packet data segments from a media access controller across multiple physical links |
US6526026B1 (en) | 1997-12-10 | 2003-02-25 | Intel Corporation | Digit transmission over wireless communication link |
US5881069A (en) | 1997-12-12 | 1999-03-09 | Motorola, Inc. | Method and apparatus for error correction processing in a radio communication device |
US6208959B1 (en) | 1997-12-15 | 2001-03-27 | Telefonaktibolaget Lm Ericsson (Publ) | Mapping of digital data symbols onto one or more formant frequencies for transmission over a coded voice channel |
US6032037A (en) | 1997-12-16 | 2000-02-29 | Sur-Gard Security Systems Ltd. | Alarm panel with cellular communications backup |
US6014090A (en) | 1997-12-22 | 2000-01-11 | At&T Corp. | Method and apparatus for delivering local information to travelers |
US6249227B1 (en) | 1998-01-05 | 2001-06-19 | Intermec Ip Corp. | RFID integrated in electronic assets |
US5936526A (en) | 1998-01-13 | 1999-08-10 | Micron Electronics, Inc. | Apparatus for generating an alarm in a portable computer system |
US6107960A (en) | 1998-01-20 | 2000-08-22 | Snaptrack, Inc. | Reducing cross-interference in a combined GPS receiver and communication system |
US7430257B1 (en) | 1998-02-12 | 2008-09-30 | Lot 41 Acquisition Foundation, Llc | Multicarrier sub-layer for direct sequence channel and multiple-access coding |
US5955992A (en) | 1998-02-12 | 1999-09-21 | Shattil; Steve J. | Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter |
US6101395A (en) | 1998-02-13 | 2000-08-08 | Intel Corporation | Method and apparatus for optimizing call setup traffic in a communications network with out-of-band call control signaling |
US6038595A (en) | 1998-03-02 | 2000-03-14 | Emc Corporation | Information/communication device for network based services and a system for use of information/communication based services |
US6044257A (en) | 1998-03-19 | 2000-03-28 | American Secure Care, Llc | Panic button phone |
US6112084A (en) | 1998-03-24 | 2000-08-29 | Telefonaktiebolaget Lm Ericsson | Cellular simultaneous voice and data including digital simultaneous voice and data (DSVD) interwork |
US5949335A (en) | 1998-04-14 | 1999-09-07 | Sensormatic Electronics Corporation | RFID tagging system for network assets |
US5999124A (en) | 1998-04-22 | 1999-12-07 | Snaptrack, Inc, | Satellite positioning system augmentation with wireless communication signals |
WO1999056144A1 (en) | 1998-04-28 | 1999-11-04 | Snaptrack, Inc. | Method and apparatus for providing location-based information via a computer network |
US6308060B2 (en) | 1998-06-15 | 2001-10-23 | @Track Communications, Inc. | Method and apparatus for providing a communication path using a paging network |
US6024142A (en) | 1998-06-25 | 2000-02-15 | Micron Communications, Inc. | Communications system and method, fleet management system and method, and method of impeding theft of fuel |
CA2242495A1 (en) | 1998-07-06 | 2000-01-06 | Northern Telecom Limited | Data network node connection establishment |
US6525842B1 (en) | 1998-07-09 | 2003-02-25 | Canon Kabushiki Kaisha | Image processing apparatus and method of the same and storage medium |
US6836515B1 (en) | 1998-07-24 | 2004-12-28 | Hughes Electronics Corporation | Multi-modulation radio communications |
US6405033B1 (en) | 1998-07-29 | 2002-06-11 | Track Communications, Inc. | System and method for routing a call using a communications network |
US6084517A (en) | 1998-08-12 | 2000-07-04 | Rabanne; Michael C. | System for tracking possessions |
EP1106022B1 (en) | 1998-08-21 | 2008-01-23 | Motorola, Inc. | Method and apparatus for control of vocoder bypass utilizing inband signaling |
US6091969A (en) | 1998-08-21 | 2000-07-18 | Motorola, Inc. | Method and apparatus for inband signaling control of vocoder bypass |
US6434198B1 (en) | 1998-08-28 | 2002-08-13 | Lucent Technologies Inc. | Method for conveying TTY signals over wireless communication systems |
US6351495B1 (en) | 1998-08-28 | 2002-02-26 | Lucent Technologies Inc. | Apparatus and method for conveying TTY signals over wireless telecommunication systems |
US6683855B1 (en) | 1998-08-31 | 2004-01-27 | Lucent Technologies Inc. | Forward error correction for high speed optical transmission systems |
US6067044A (en) | 1998-09-21 | 2000-05-23 | National Systems And Research Company | Remote tracking and sensing system and method |
US6741581B1 (en) | 1998-09-22 | 2004-05-25 | Hughes Electronics Corporation | System and method for transmitting data in frame format using an R-Rake retransmission technique with blind identification of data frames |
US6778645B1 (en) | 1998-10-30 | 2004-08-17 | Intel Corporation | Method and apparatus for coordinating a point to point data session from an existing voice telephone call |
BR9908762A (en) | 1998-11-02 | 2004-02-25 | Integrated Data Communications | Geospatial Internet Protocol Addressing |
US6430176B1 (en) | 1998-11-06 | 2002-08-06 | Nortel Networks Limited | Multimedia channel management through PSTN signaling |
US6343217B1 (en) | 1998-11-12 | 2002-01-29 | Legerity, Inc. | Digital cordless telephony with PCM coding |
US6373842B1 (en) | 1998-11-19 | 2002-04-16 | Nortel Networks Limited | Unidirectional streaming services in wireless systems |
US6614781B1 (en) | 1998-11-20 | 2003-09-02 | Level 3 Communications, Inc. | Voice over data telecommunications network architecture |
US6154658A (en) | 1998-12-14 | 2000-11-28 | Lockheed Martin Corporation | Vehicle information and safety control system |
US6690922B1 (en) | 1998-12-23 | 2004-02-10 | Honeywell International Inc. | Radio frequency (RF) system loss compensation method using power measurement of pulsed RF source |
US6282430B1 (en) | 1999-01-01 | 2001-08-28 | Motorola, Inc. | Method for obtaining control information during a communication session in a radio communication system |
GB2346291B (en) | 1999-01-26 | 2004-01-21 | Ericsson Telefon Ab L M | Handling menu information |
US6754265B1 (en) | 1999-02-05 | 2004-06-22 | Honeywell International Inc. | VOCODER capable modulator/demodulator |
US6747571B2 (en) | 1999-03-08 | 2004-06-08 | Comverge Technologies, Inc. | Utility meter interface system |
SE521472C2 (en) | 1999-03-16 | 2003-11-04 | Ericsson Telefon Ab L M | Portable communication device with dynamic menu |
US6519260B1 (en) | 1999-03-17 | 2003-02-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Reduced delay priority for comfort noise |
US6166688A (en) | 1999-03-31 | 2000-12-26 | International Business Machines Corporation | Data processing system and method for disabling a portable computer outside an authorized area |
US6765931B1 (en) | 1999-04-13 | 2004-07-20 | Broadcom Corporation | Gateway with voice |
US6345251B1 (en) | 1999-06-15 | 2002-02-05 | Telefonaktiebolaget Lm Ericsson (Publ) | Low-rate speech coder for non-speech data transmission |
US6611804B1 (en) | 1999-06-15 | 2003-08-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Universal TTY/TDD devices for robust text and data transmission via PSTN and cellular phone networks |
US6321091B1 (en) | 1999-07-29 | 2001-11-20 | Bryan Holland | Portable locator system and method |
US6453168B1 (en) | 1999-08-02 | 2002-09-17 | Itt Manufacturing Enterprises, Inc | Method and apparatus for determining the position of a mobile communication device using low accuracy clocks |
KR100337882B1 (en) | 1999-10-26 | 2002-05-23 | 김순택 | Method for driving plasma display panel |
US6300875B1 (en) | 1999-11-22 | 2001-10-09 | Mci Worldcom, Inc. | Method and apparatus for high efficiency position information reporting |
US6358145B1 (en) | 1999-11-29 | 2002-03-19 | Strottman International | Broadcast sweepstakes game system and game piece device |
US6307471B1 (en) | 1999-12-01 | 2001-10-23 | Ensure Technologies, Inc. | Radio based proximity token with multiple antennas |
US6614349B1 (en) | 1999-12-03 | 2003-09-02 | Airbiquity Inc. | Facility and method for tracking physical assets |
US6516198B1 (en) | 1999-12-06 | 2003-02-04 | Tendler Cellular Inc | System for location reporting |
GB2357611B (en) | 1999-12-21 | 2004-06-02 | Ibm | Electronic location tag |
SE520919C2 (en) * | 1999-12-29 | 2003-09-16 | Volvo Technology Corp | System and method of communication between a central station and a remote object |
US6628967B1 (en) | 1999-12-30 | 2003-09-30 | Nortel Networks Limited | Wireless communication device capable to transmit/receive TTY/TDD messages with variable data rate, embedded into audio data frames |
US6362736B1 (en) | 2000-01-04 | 2002-03-26 | Lucent Technologies Inc. | Method and apparatus for automatic recovery of a stolen object |
US6603977B1 (en) | 2000-02-04 | 2003-08-05 | Sbc Properties, Lp | Location information system for a wireless communication device and method therefor |
JP2001238256A (en) | 2000-02-21 | 2001-08-31 | Hitachi Kokusai Electric Inc | Variable speed coding system |
WO2001072067A1 (en) * | 2000-03-21 | 2001-09-27 | Airbiquity Inc. | Voiceband modem for data communications over digital wireless networks |
JP3551890B2 (en) * | 2000-04-10 | 2004-08-11 | 村田機械株式会社 | Communication terminal device |
CN100409592C (en) | 2000-04-11 | 2008-08-06 | 艾尔耐特通信公司 | Method and apparatus employing wireless in-band signaling for downlink transmission of commands |
ATE420432T1 (en) | 2000-04-24 | 2009-01-15 | Qualcomm Inc | METHOD AND DEVICE FOR THE PREDICTIVE QUANTIZATION OF VOICEABLE SPEECH SIGNALS |
FI109061B (en) | 2000-05-10 | 2002-05-15 | Nokia Corp | Resource reservation on a packet network |
EP1594269B1 (en) | 2000-05-17 | 2008-06-18 | Symstream Technology Holdings No. 2 PTY LTD | Octave pulse data encoding and decoding method and apparatus |
US20060246910A1 (en) | 2000-05-31 | 2006-11-02 | Jerry Petermann | Wireless devices for use with a wireless communications system with articial intelligence-based distributive call routing |
GB2364480B (en) | 2000-06-30 | 2004-07-14 | Mitel Corp | Method of using speech recognition to initiate a wireless application (WAP) session |
US6327533B1 (en) | 2000-06-30 | 2001-12-04 | Geospatial Technologies, Inc. | Method and apparatus for continuously locating an object |
JP3335617B2 (en) | 2000-08-04 | 2002-10-21 | 松下電器産業株式会社 | Emergency call system terminal device, emergency call system, and emergency call system terminal device control method |
US20020022465A1 (en) * | 2000-08-15 | 2002-02-21 | Mccullagh Michael J. | Apparatus and method for integrated frequency hopping and GPS receiver |
US7092370B2 (en) | 2000-08-17 | 2006-08-15 | Roamware, Inc. | Method and system for wireless voice channel/data channel integration |
KR100525384B1 (en) | 2000-10-31 | 2005-11-02 | 엘지전자 주식회사 | Method for controlling packet retransmission in mobile communication system |
US20020085703A1 (en) | 2001-01-02 | 2002-07-04 | Proctor Rod L. | Facility and method for cellular data communication between hearing impaired users and emergency service centers |
US6845153B2 (en) | 2001-01-31 | 2005-01-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Network independent party addressing using a unique identifier linked to network specific addresses |
US20020111167A1 (en) | 2001-02-13 | 2002-08-15 | Telefonaktiebolaget Lm Ericsson (Publ). | System and method of providing voice and data features in a time division multiple access (TDMA) network |
US20020122401A1 (en) | 2001-03-02 | 2002-09-05 | Zeng-Jun Xiang | System and method in a wireless telecommunication network for placing a voice call on hold and conducting a data session |
US6799050B1 (en) | 2001-06-04 | 2004-09-28 | Snaptrack, Inc. | Reducing cross-interference in a combined GPS receiver and communication system |
US20030016639A1 (en) | 2001-07-19 | 2003-01-23 | Ericsson Inc. | Telecommunications system and method for delivery of short message service messages to a mobile terminal in data mode |
US7283904B2 (en) | 2001-10-17 | 2007-10-16 | Airbiquity, Inc. | Multi-sensor fusion |
WO2003034235A1 (en) | 2001-10-17 | 2003-04-24 | Infocus Corporation | Dataconferencing method, appliance, and system |
US7215965B2 (en) | 2001-11-01 | 2007-05-08 | Airbiquity Inc. | Facility and method for wireless transmission of location data in a voice channel of a digital wireless telecommunications network |
US6981022B2 (en) | 2001-11-02 | 2005-12-27 | Lucent Technologies Inc. | Using PSTN to convey participant IP addresses for multimedia conferencing |
US6700867B2 (en) | 2001-12-20 | 2004-03-02 | Motorola, Inc. | Method and system for reduced memory hybrid automatic repeat request |
JP3486620B2 (en) * | 2002-03-18 | 2004-01-13 | キヤノン株式会社 | Data communication device |
US7102640B1 (en) | 2002-03-21 | 2006-09-05 | Nokia Corporation | Service/device indication with graphical interface |
US20030212562A1 (en) * | 2002-05-13 | 2003-11-13 | General Motors Corporation | Manual barge-in for server-based in-vehicle voice recognition systems |
US7269188B2 (en) | 2002-05-24 | 2007-09-11 | Airbiquity, Inc. | Simultaneous voice and data modem |
US20030227939A1 (en) | 2002-06-05 | 2003-12-11 | Satoru Yukie | Establishing a connection using a hybrid receiver |
US20040034529A1 (en) | 2002-08-14 | 2004-02-19 | Hooper Howard Gaines | Multifunction printer that converts and prints voice data |
US7562393B2 (en) | 2002-10-21 | 2009-07-14 | Alcatel-Lucent Usa Inc. | Mobility access gateway |
DE10249867A1 (en) * | 2002-10-25 | 2004-05-13 | Siemens Ag | Method and device for selecting network access to one or more data networks via a telecommunications terminal |
US7653383B2 (en) | 2003-02-28 | 2010-01-26 | Motorola, Inc. | Method and apparatus for remote data access in a mobile communication device |
US6983171B2 (en) | 2003-02-28 | 2006-01-03 | Motorola, Inc. | Device and method for communicating teletype information in a vehicle communication system |
US8010124B2 (en) | 2003-03-24 | 2011-08-30 | Sony Ericsson Mobile Communications Ab | Methods, systems and computer program products for providing location determination information to an assisted location service |
US8359197B2 (en) * | 2003-04-01 | 2013-01-22 | Digital Voice Systems, Inc. | Half-rate vocoder |
US7206574B2 (en) | 2003-04-17 | 2007-04-17 | Lucent Technologies Inc. | Automated exchange of broadband communication addresses over a non-broadband channel in a wireless telecommunication system |
US7330453B1 (en) | 2003-05-31 | 2008-02-12 | 3Com Corporation | System and method for integrating call control and data network access components |
US7398100B2 (en) | 2003-07-01 | 2008-07-08 | Motorola, Inc. | Method, apparatus and system for use in controlling transmission power during wireless communication |
US7583959B2 (en) | 2003-07-07 | 2009-09-01 | At&T Mobility Ii Llc | One button access to network services from a remote control device |
TWI229980B (en) | 2003-11-20 | 2005-03-21 | Syncomm Technology Corp | De-mapping method for wireless communications systems |
US7688260B2 (en) * | 2004-08-26 | 2010-03-30 | Global Locate, Inc. | Method and apparatus for locating position of a mobile device in an assisted satellite positioning system |
US7194438B2 (en) | 2004-02-25 | 2007-03-20 | Nokia Corporation | Electronic payment schemes in a mobile environment for short-range transactions |
US7477906B2 (en) | 2004-02-27 | 2009-01-13 | Research In Motion Limited | Methods and apparatus for facilitating the determination of GPS location information for a mobile station without disrupting communications of a voice call |
US8085741B2 (en) | 2004-03-10 | 2011-12-27 | Core Wireless Licensing S.A.R.L. | System and method for pushing content to a terminal utilizing a network-initiated data service technique |
US20050215228A1 (en) | 2004-03-26 | 2005-09-29 | Comverse Ltd. | Voice session data session interoperability in the telephony environment |
US8265057B2 (en) | 2004-03-31 | 2012-09-11 | Motorola Mobility Llc | Enhanced voice pre-emption of active packet data service |
EP1596613A1 (en) | 2004-05-10 | 2005-11-16 | Dialog Semiconductor GmbH | Data and voice transmission within the same mobile phone call |
US20080182570A1 (en) | 2004-05-21 | 2008-07-31 | Carmen Kuhl | Device and Method For Automated Functionality-Based Selective Establishing of Wireless Data Communication Connections |
US7856240B2 (en) | 2004-06-07 | 2010-12-21 | Clarity Technologies, Inc. | Distributed sound enhancement |
US20050090225A1 (en) | 2004-11-16 | 2005-04-28 | Om2 Technology Inc. | A Simplified Second Generation Enhanced Emergency Communications System SSGE-911 |
US7508810B2 (en) * | 2005-01-31 | 2009-03-24 | Airbiquity Inc. | Voice channel control of wireless packet data communications |
US7970607B2 (en) * | 2005-02-11 | 2011-06-28 | Clyde Holmes | Method and system for low bit rate voice encoding and decoding applicable for any reduced bandwidth requirements including wireless |
US20060287003A1 (en) * | 2005-06-15 | 2006-12-21 | Kamyar Moinzadeh | Concomitant inband signaling for data communications over digital wireless telecommunications network |
US8874477B2 (en) | 2005-10-04 | 2014-10-28 | Steven Mark Hoffberg | Multifactorial optimization system and method |
US8194779B2 (en) | 2005-10-24 | 2012-06-05 | General Motors Llc | Method for data communication via a voice channel of a wireless communication network |
US8381047B2 (en) | 2005-11-30 | 2013-02-19 | Microsoft Corporation | Predicting degradation of a communication channel below a threshold based on data transmission errors |
US20070155360A1 (en) | 2005-12-30 | 2007-07-05 | Yafan An | Methods, Apparatuses and Systems for the Reporting of Roadway Speed and Incident Data and the Constructing of Speed Map Database |
DE102006010513B4 (en) | 2006-03-07 | 2011-12-29 | Infineon Technologies Ag | Communication device, radio communication arrangement and method for transmitting information from a first radio communication device to a second radio communication device |
US7924934B2 (en) | 2006-04-07 | 2011-04-12 | Airbiquity, Inc. | Time diversity voice channel data communications |
US7511611B2 (en) | 2006-05-18 | 2009-03-31 | Casella Waste Systems, Inc. | Systems for and methods of asset management in a waste management service environment |
KR100735413B1 (en) | 2006-08-08 | 2007-07-04 | 삼성전자주식회사 | Mobile terminal and method for v0ice data input and output while play music data using bluetooth |
JP5089136B2 (en) | 2006-11-02 | 2012-12-05 | 株式会社デンソー | In-vehicle emergency call device |
US20080143497A1 (en) | 2006-12-15 | 2008-06-19 | General Motors Corporation | Vehicle Emergency Communication Mode Method and Apparatus |
JP5113394B2 (en) | 2007-01-23 | 2013-01-09 | 太陽誘電株式会社 | Elastic wave device |
KR100787982B1 (en) | 2007-03-02 | 2007-12-24 | 삼성전자주식회사 | Apparatus and method for frequency modulation transmitting of audio signal |
DE102007023702A1 (en) | 2007-05-22 | 2008-11-27 | Infineon Technologies Ag | A method for generating a Generic Object Exchange Profile message, method for providing navigation data, method for establishing a connection for transmitting navigation data, navigation terminal and navigation data insertion unit |
US8190716B2 (en) | 2007-08-24 | 2012-05-29 | Broadcom Corporation | Method and system for managing bluetooth communication using software or firmware filtering |
JP4395800B2 (en) | 2007-09-18 | 2010-01-13 | 日本電気株式会社 | Power management system and power management method |
US20090088180A1 (en) * | 2007-10-01 | 2009-04-02 | James Lamance | Computing geographical location of a mobile receiver using network measurement reports |
CA2696848A1 (en) * | 2007-10-20 | 2009-04-23 | Airbiquity Inc. | Wireless in-band signaling with in-vehicle systems |
US7790576B2 (en) * | 2007-11-29 | 2010-09-07 | Stats Chippac, Ltd. | Semiconductor device and method of forming through hole vias in die extension region around periphery of die |
US9208797B2 (en) | 2008-04-18 | 2015-12-08 | General Motors Llc | Tone detection for signals sent through a vocoder |
KR20090124588A (en) | 2008-05-30 | 2009-12-03 | 삼성전자주식회사 | Method for connecting multiple bluetooth profile and bluetooth apparatus using the same |
US9083521B2 (en) | 2008-06-05 | 2015-07-14 | Qualcomm Incorporated | System and method of an in-band modem for data communications over digital wireless communication networks |
US8825480B2 (en) * | 2008-06-05 | 2014-09-02 | Qualcomm Incorporated | Apparatus and method of obtaining non-speech data embedded in vocoder packet |
US8594138B2 (en) * | 2008-09-15 | 2013-11-26 | Airbiquity Inc. | Methods for in-band signaling through enhanced variable-rate codecs |
US7983310B2 (en) * | 2008-09-15 | 2011-07-19 | Airbiquity Inc. | Methods for in-band signaling through enhanced variable-rate codecs |
US8036600B2 (en) * | 2009-04-27 | 2011-10-11 | Airbiquity, Inc. | Using a bluetooth capable mobile phone to access a remote network |
-
2010
- 2010-10-13 US US12/904,093 patent/US8249865B2/en not_active Expired - Fee Related
- 2010-10-18 WO PCT/US2010/053006 patent/WO2011062715A1/en active Application Filing
- 2010-10-18 CA CA2778056A patent/CA2778056A1/en not_active Abandoned
- 2010-10-18 CN CN201080052411.5A patent/CN102792625B/en not_active Expired - Fee Related
- 2010-10-18 KR KR1020127016042A patent/KR20120101082A/en not_active Application Discontinuation
- 2010-10-18 BR BR112012009888A patent/BR112012009888A2/en not_active IP Right Cessation
- 2010-10-18 EP EP10771613.6A patent/EP2504942B1/en not_active Not-in-force
- 2010-10-18 AU AU2010322322A patent/AU2010322322B2/en not_active Ceased
- 2010-10-18 JP JP2012539913A patent/JP5709887B2/en not_active Expired - Fee Related
- 2010-10-18 MX MX2012005702A patent/MX2012005702A/en not_active Application Discontinuation
- 2010-10-26 TW TW099136455A patent/TWI357741B/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050207511A1 (en) | 2004-03-17 | 2005-09-22 | General Motors Corporation. | Meethod and system for communicating data over a wireless communication system voice channel utilizing frame gaps |
WO2009149356A2 (en) * | 2008-06-05 | 2009-12-10 | Qualcomm Incorporated | System and method of an in-band modem for data communications over digital wireless communication networks |
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KR20120101082A (en) | 2012-09-12 |
TWI357741B (en) | 2012-02-01 |
TW201129013A (en) | 2011-08-16 |
US20110125488A1 (en) | 2011-05-26 |
JP5709887B2 (en) | 2015-04-30 |
CA2778056A1 (en) | 2011-05-26 |
CN102792625B (en) | 2015-06-17 |
CN102792625A (en) | 2012-11-21 |
EP2504942B1 (en) | 2014-11-26 |
AU2010322322A2 (en) | 2012-08-23 |
US8249865B2 (en) | 2012-08-21 |
MX2012005702A (en) | 2012-11-12 |
AU2010322322B2 (en) | 2014-10-16 |
BR112012009888A2 (en) | 2016-11-29 |
EP2504942A1 (en) | 2012-10-03 |
AU2010322322A1 (en) | 2012-05-03 |
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