WO2006113023A1 - Wirless communication system with collision avoidance protocol - Google Patents
Wirless communication system with collision avoidance protocol Download PDFInfo
- Publication number
- WO2006113023A1 WO2006113023A1 PCT/US2006/010105 US2006010105W WO2006113023A1 WO 2006113023 A1 WO2006113023 A1 WO 2006113023A1 US 2006010105 W US2006010105 W US 2006010105W WO 2006113023 A1 WO2006113023 A1 WO 2006113023A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transmission protocol
- protocol parameter
- infrastructure
- packets
- leaf node
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
- H04W74/0816—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA carrier sensing with collision avoidance
-
- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Definitions
- the invention relates to wireless communication systems and in particular to a wireless communication system with a collision avoidance protocol.
- Wireless sensors are usually powered by batteries.
- the batteries have a useful life that is limited, and is a function of the transmission power of the sensor coupled with the number of times that a sensor needs to transmit data.
- transmissions of data from a sensor may collide with transmissions from other sensors. The sensor may then retransmit the data additional times in order for the data to be properly received.
- Some of these sensors may be transmit-only devices that transmit each data packet a number of times.
- leaf nodes There is a need for a wireless sensor network that reduces the number of transmissions required by wireless sensors or other types of wireless nodes. There is a need to extend the battery life of wireless leaf nodes to reduce maintenance costs.
- a wireless leaf node transmits data to an infrastructure node at a time according to a duty cycle. When a collision occurs, the data is retransmitted until an acknowledgement is received from an infrastructure node. A change in a transmission protocol parameter, such as duty cycle / phase of sampling is initiated with such retransmissions. A decision to change the parameter is taken either by the wireless leaf node itself, or by an infrastructure node.
- some of the leaf nodes may be transmit-only devices which repeat each data packet a number of times.
- the parameters for the transceiver leaf nodes may be changed in such a way that their future transmissions do not collide with the transmissions from the transmit-only leaf nodes.
- FIG. 1 is a block diagram of a wireless communication system according to an example embodiment of the present invention.
- FIG. 2 is a block diagram of a wireless communication system according to an alternative example embodiment of the present invention.
- FIG. 3 A and 3B are a block diagram and a timing diagram of a wireless communication system according to an example embodiment of the present invention.
- the functions or algorithms described herein are implemented in software or a combination of software and human implemented procedures in one embodiment.
- the software comprises computer executable instructions stored on computer readable media such as memory or other type of storage devices.
- computer readable media is also used to represent carrier waves on which the software is transmitted.
- modules which are software, hardware, firmware or any combination thereof. Multiple functions are performed in one or more modules as desired, and the embodiments described are merely examples.
- the software is executed on a digital signal processor, ASIC, microprocessor, or other type of processor operating on a computer system, such as a personal computer, server or other computer system.
- wireless communication systems such as the system 100 illustrated in block diagram form in FIG. 1 allow the deployment of wireless devices in desired locations and may increase overall coverage area,.
- Infrastructure nodes in one embodiment are transceivers that may be placed in various locations such as in an industrial plant or in a field to cover areas and the infrastructure nodes are linked to each other via wireless or wired links.
- infrastructure nodes Inodes
- the leaf nodes may capture wireless communications from multiple leaf nodes that are located within communication range of the infrastructure nodes.
- the leaf nodes may be internally or battery powered wireless sensors and actuators.
- Various communication protocols may be implemented allowing wireless communications between the nodes.
- frequency spreading/frequency hopping protocols may be used.
- TX leaf node 119 is a transmit only leaf node, which transmits signals to the Inode 113. In one embodiment, it may transmit a signal with the same information several times to ensure that it has been received. Since it does not have a receiver, it cannot receive any sort of acknowledgement from Inode 113.
- a second type of leaf node 120 is referred to as a TRX leaf node, because it contains a transceiver, allowing two way communication between Inode 115.
- the communication connection is wireless, and allows the Inode to receive data from the TRX leaf node, and allows the TRX leaf node to receive acknowledgements from the Inode.
- FIG. 1 a plurality of Inodes and various leaf nodes are shown.
- Example system 100 has Inode 113 coupled to TX leaf node 119, Inode 115 coupled to TRX leaf node 120, and TX leaf nodes 121 and 122.
- Inode 117 is coupled to TRX leaf nodes 123 and 124 and TX leaf node 125.
- Inode 116 is coupled to TRX leaf node 126 and TX leaf node 127, and Inode 115 is coupled to TRX leaf node 128.
- infrastructure nodes forward sensor data from a leaf node to data recipient hardware, such as a control room, central station, and/or a computer 133.
- Infrastructure nodes 113 and 114 may be gateway nodes that are hard-wired to a bus or may be wirelessly connected. There may be just one infrastructure gateway node or more than two such nodes.
- Infrastructure nodes 115, 116 and 117 may be line powered and capable of significant wireless range and good reliability in the delivery of information. However, the desired wiring cost savings and flexibility of placement of sensors (leaf nodes) makes it almost necessary to use wireless sensors like leaf nodes 119-128. These leaf nodes may be low power, low cost and low complexity radios that operate with battery power. [0016] FIG.
- TX leaf nodes 205 and 206 are transmit only leaf nodes, while TRX leaf nodes 207, 208 and 209 are transceiver leaf nodes.
- Each type of leaf node may transmit packets in accordance with a transmission protocol parameter.
- the Inode may save the transmission protocol parameters for each leaf node it communicates with.
- the transmission protocol parameter comprises a phase of sampling / duty cycle.
- Inode 210 only sends an acknowledgement
- TRX leaf nodes may include an indication in transmitted packets to request an ACK from the INode.
- TX leaf nodes may have an indication in their transmitted packets to not request an ACK from the INode.
- only one type of leaf node indicates its preference for an ACK, and the Inode infers the opposite for other leaf nodes note indicating a preference.
- the Inode keeps track of which leaf nodes should receive ACKs, and responds accordingly.
- the INode may have the ability to look at the indication in a received packet and decide to transmit or not transmit an ACK.
- the TRX Leaf Node has a retransmit module that retransmits a packet when no ACK is received.
- the retransmit module may include a request for a shift of the transmission protocol parameter in each retransmission.
- the retransmit module shifts the transmission protocol parameter consistent with the request in the retransmission which received an ACK with a response to the request.
- the INode has a response module that sends the ACK with the response to the request for the shift of the transmission protocol parameter.
- the response module shifts the transmission protocol parameter consistent with the request and updates the list of the transmission protocol parameters.
- the retransmit module of the TRX leaf node may set a flag indicative of a collision in each retransmission.
- the retransmit module shifts the transmission protocol parameter consistent with a command received in an ACK to a retransmission.
- the INode response module sends the ACK after receiving a retransmission with a flag indicative of a collision.
- the ACK includes a command to shift the transmission protocol parameter for succeeding packets.
- the response module shifts the transmission protocol parameter consistent with the command and updates the list of the transmission protocol parameters.
- leaf nodes may be associated with each infrastructure node.
- the leaf nodes may not be time synchronized with each other or with the associated infrastructure node. Due to such lack of synchronization, collisions between the transmissions of different leaf nodes are likely to occur. If a collision occurs, the infrastructure node will not transmit the ACK, so the TRX leaf node re-transmits the same data until it hears the ACK from the infrastructure node. Such re-transmissions will require additional batter power consumption, thus significantly reducing the overall life of the battery- powered leaf node.
- Medium access control is a technique used to avoid collisions so that two interfering TRX leaf nodes do not repeatedly transmit at the same time. Collision avoidance may greatly reduce the number of re-transmissions required. Such collision avoidance may save battery power at the leaf node, thus increasing the overall life of the wireless sensor network.
- the medium access control technique is described in further detail below.
- FIG. 3 A is a block diagram representation of the Inode and leaf nodes in communication.
- FIG. 3B illustrates a timing diagram for communications between the leaf nodes and the Inode, including the use of medium access control to avoid further collisions.
- TRX leaf node 312 transmits a packet as indicated at
- TRX leaf node 312 will receive an ACK 321 from Inode 310.
- TRX leaf node 313 then transmits a packet 322 and receives an ACK 323.
- TX leaf node 314 begins to transmit data at 324. Note that since no ACK is sent, nor can it be received in one embodiment, the same data is transmitted several times. While the data is being transmitted for the third time, TRX leaf node 312 begins to transmit data 325. A collision occurs due to the overlap in transmissions. Since no ACK is received in response to transmission of data 325, TRX leaf node 312 retransmits it at 326, setting a retransmit flag, and receives an ACK at 327 with a new transmission protocol value.
- TRX leaf node 313 then sends a packet and receives an ACK at
- TX leaf node 314 transmits data several times at 331.
- TRX leaf node 312 received the previous ACK 327, which included the new transmission protocol value. It modified its transmission to the new phase, and transmits data 333. Since data 333 did not collide with data 331 from TX leaf node 314, data 333 is received by the Inode and an ACK 334 is sent by the Inode and received by the TRX leaf node 312. A complete cycle of data transfer from leaf nodes coupled to Inode 310 occurred, and no further transmission protocol values are changed. However, since some TX leaf nodes transmit relatively infrequently, and clock values in different leaf nodes may change, it may later be necessary to repeat the process of medium access control.
- Avoiding collisions may help reduce the number of retransmissions required of battery powered leaf nodes. It can result in substantial extension of battery life, leading to lower maintenance costs.
- a TRX leaf node such as a sensor nodes not receive an ACK, it will re-transmit the packets again. If it does not change its transmission protocols, this sequence is bound to repeat each time the sensor wakes up to transmit data in accordance with the protocol, always requiring two transmissions per packet to receive an ACK.
- shifting its transmission protocol parameters such as duty cycle/phase of sampling, it can send future packets using only one transmission per packet. The decision to change the protocol parameter is taken either by the sensor itself, or by the associated infrastructure node.
- the first retransmission of a packet will also collide with a packet from another leaf node. In this case, it repeats retransmission of the packet until the nth transmission receives ACK(s), and permission to change. This would correspond to the earliest collision-free transmission using the current phase of sampling.
- the nth transmission contains the packet and the requested new phase corresponding to the nth transmission of the old cycle.
- the infrastructure node(s) would not grant permission if the new phase might result in future collisions, or another leaf node is also interested in following the same phase.
- the leaf node updates a previous collision flag in the retransmitted packet.
- the infrastructure node follows the frequency hopping sequence and duty cycle, and knows about the collisions. This fact is reiterated by the collision flag in the received retransmitted packet.
- the infrastructure node proposes a new phase for the leaf node, while taking into consideration the phases of all the other associated leaf nodes. It transmits this new phase proposal with the ACK.
- the leaf node receives the proposal and changes its phase of sampling and it may send a confirmation ACK back to the infrastructure node. It follows the new phase from the next packet onward until a new collision is detected. At this point, the phase change process may repeat.
- Leaf nodes generally need not have a fixed application duty cycle.
- the infrastructure node may indicate the next wake-up time for the leaf nodes in the ACK. This information may be enough for the infrastructure node to track the leaf node's activity.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06739050A EP1869939A1 (en) | 2005-04-12 | 2006-03-21 | Wirless communication system with collision avoidance protocol |
CA002604479A CA2604479A1 (en) | 2005-04-12 | 2006-03-21 | Wirless communication system with collision avoidance protocol |
JP2008506475A JP2008537871A (en) | 2005-04-12 | 2006-03-21 | Wireless communication system with collision avoidance protocol |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/103,982 US20060227729A1 (en) | 2005-04-12 | 2005-04-12 | Wireless communication system with collision avoidance protocol |
US11/103,982 | 2005-04-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006113023A1 true WO2006113023A1 (en) | 2006-10-26 |
Family
ID=36632811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2006/010105 WO2006113023A1 (en) | 2005-04-12 | 2006-03-21 | Wirless communication system with collision avoidance protocol |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060227729A1 (en) |
EP (1) | EP1869939A1 (en) |
JP (1) | JP2008537871A (en) |
CN (1) | CN101194531A (en) |
CA (1) | CA2604479A1 (en) |
WO (1) | WO2006113023A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11856483B2 (en) | 2016-07-10 | 2023-12-26 | ZaiNar, Inc. | Method and system for radiolocation asset tracking via a mesh network |
US11924757B2 (en) | 2015-01-27 | 2024-03-05 | ZaiNar, Inc. | Systems and methods for providing wireless asymmetric network architectures of wireless devices with power management features |
Families Citing this family (83)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8090857B2 (en) | 2003-11-24 | 2012-01-03 | Qualcomm Atheros, Inc. | Medium access control layer that encapsulates data from a plurality of received data units into a plurality of independently transmittable blocks |
WO2005086331A2 (en) | 2004-03-02 | 2005-09-15 | Rosemount, Inc. | Process device with improved power generation |
US20050201349A1 (en) * | 2004-03-15 | 2005-09-15 | Honeywell International Inc. | Redundant wireless node network with coordinated receiver diversity |
US8538560B2 (en) | 2004-04-29 | 2013-09-17 | Rosemount Inc. | Wireless power and communication unit for process field devices |
US8145180B2 (en) | 2004-05-21 | 2012-03-27 | Rosemount Inc. | Power generation for process devices |
US7262693B2 (en) * | 2004-06-28 | 2007-08-28 | Rosemount Inc. | Process field device with radio frequency communication |
US8160535B2 (en) | 2004-06-28 | 2012-04-17 | Rosemount Inc. | RF adapter for field device |
US8929228B2 (en) * | 2004-07-01 | 2015-01-06 | Honeywell International Inc. | Latency controlled redundant routing |
US7680460B2 (en) * | 2005-01-03 | 2010-03-16 | Rosemount Inc. | Wireless process field device diagnostics |
US9184364B2 (en) | 2005-03-02 | 2015-11-10 | Rosemount Inc. | Pipeline thermoelectric generator assembly |
JP4801731B2 (en) * | 2005-05-27 | 2011-10-26 | ローズマウント インコーポレイテッド | Method for selecting a data communication provider in a field device |
EP1729456B1 (en) * | 2005-05-30 | 2016-11-23 | Sap Se | Method and system for selection of network nodes |
US7539882B2 (en) | 2005-05-30 | 2009-05-26 | Rambus Inc. | Self-powered devices and methods |
RU2389056C2 (en) * | 2005-06-27 | 2010-05-10 | Роузмаунт Инк. | Field device with radio-frequency connection, in which consumed power is controlled dynamically |
WO2007016032A2 (en) * | 2005-07-27 | 2007-02-08 | Conexant Systems, Inc. | Communicating schedule and network information in a powerline network |
US8553706B2 (en) * | 2005-07-27 | 2013-10-08 | Coppergate Communications Ltd. | Flexible scheduling of resources in a noisy environment |
US8737420B2 (en) * | 2005-07-27 | 2014-05-27 | Sigma Designs Israel S.D.I. Ltd. | Bandwidth management in a powerline network |
US20070025266A1 (en) * | 2005-07-27 | 2007-02-01 | Neal Riedel | Communicating schedule and network information in a powerline network |
US8175190B2 (en) | 2005-07-27 | 2012-05-08 | Qualcomm Atheros, Inc. | Managing spectra of modulated signals in a communication network |
JP5405123B2 (en) * | 2006-01-11 | 2014-02-05 | フィッシャー−ローズマウント システムズ, インコーポレイテッド | Controlling low-power wireless networks to save power |
US7944883B2 (en) * | 2006-03-06 | 2011-05-17 | Rosemount Inc. | Wireless mesh networks |
US7913566B2 (en) | 2006-05-23 | 2011-03-29 | Rosemount Inc. | Industrial process device utilizing magnetic induction |
US8188359B2 (en) | 2006-09-28 | 2012-05-29 | Rosemount Inc. | Thermoelectric generator assembly for field process devices |
JP5201604B2 (en) | 2006-09-29 | 2013-06-05 | ローズマウント インコーポレイテッド | Wireless mesh network with multi-sized time slots for TDMA communication |
US7889710B2 (en) | 2006-09-29 | 2011-02-15 | Rosemount Inc. | Wireless mesh network with locally activated fast active scheduling of wireless messages |
US8103316B2 (en) * | 2006-09-29 | 2012-01-24 | Rosemount Inc. | Power management system for a field device on a wireless network |
US9167423B2 (en) * | 2006-09-29 | 2015-10-20 | Rosemount Inc. | Wireless handheld configuration device for a securable wireless self-organizing mesh network |
US7697488B2 (en) * | 2006-12-28 | 2010-04-13 | Oracle America, Inc. | Organizing communications in a network |
US8107511B2 (en) * | 2007-04-30 | 2012-01-31 | Honeywell International Inc. | Apparatus and method for intelligent frequency-hopping discovery and synchronization |
US7933240B2 (en) * | 2007-07-19 | 2011-04-26 | Honeywell International Inc. | Apparatus and method for redundant connectivity and multi-channel operation of wireless devices |
US7881253B2 (en) | 2007-07-31 | 2011-02-01 | Honeywell International Inc. | Apparatus and method supporting a redundancy-managing interface between wireless and wired networks |
US8280057B2 (en) | 2007-09-04 | 2012-10-02 | Honeywell International Inc. | Method and apparatus for providing security in wireless communication networks |
US8458778B2 (en) * | 2007-09-04 | 2013-06-04 | Honeywell International Inc. | System, method, and apparatus for on-demand limited security credentials in wireless and other communication networks |
US7995985B2 (en) | 2007-09-10 | 2011-08-09 | Utc Fire & Security Americas Corporation, Inc. | Wireless security messaging model |
US8681676B2 (en) | 2007-10-30 | 2014-03-25 | Honeywell International Inc. | System and method for providing simultaneous connectivity between devices in an industrial control and automation or other system |
US8208635B2 (en) * | 2007-11-13 | 2012-06-26 | Rosemount Inc. | Wireless mesh network with secure automatic key loads to wireless devices |
EP2255562B1 (en) | 2008-02-27 | 2020-09-30 | Fisher-Rosemount Systems, Inc. | System for visualizing design and organization of wireless mesh networks in physical space |
US8250924B2 (en) * | 2008-04-22 | 2012-08-28 | Rosemount Inc. | Industrial process device utilizing piezoelectric transducer |
US8929948B2 (en) | 2008-06-17 | 2015-01-06 | Rosemount Inc. | Wireless communication adapter for field devices |
JP5232299B2 (en) | 2008-06-17 | 2013-07-10 | ローズマウント インコーポレイテッド | RF adapter for field devices with loop current bypass |
CA2726707C (en) | 2008-06-17 | 2016-01-19 | Rosemount Inc. | Rf adapter for field device with low voltage intrinsic safety clamping |
JP5255698B2 (en) | 2008-06-17 | 2013-08-07 | ローズマウント インコーポレイテッド | Wireless adapter for field devices with variable voltage drop |
US8694060B2 (en) | 2008-06-17 | 2014-04-08 | Rosemount Inc. | Form factor and electromagnetic interference protection for process device wireless adapters |
US8107390B2 (en) * | 2008-07-21 | 2012-01-31 | Honeywell International Inc. | Apparatus and method for deterministic latency-controlled communications in process control systems |
US8107989B2 (en) * | 2008-07-31 | 2012-01-31 | Honeywell International, Inc. | Apparatus and method for transmit power control in a wireless network |
US9500736B2 (en) * | 2008-07-31 | 2016-11-22 | Honeywell International Inc. | System and method for providing self-locating wireless sensors |
US8755814B2 (en) * | 2008-07-31 | 2014-06-17 | Honeywell International Inc. | Method and apparatus for intermittent location reporting |
US8633853B2 (en) | 2008-07-31 | 2014-01-21 | Honeywell International Inc. | Method and apparatus for location detection using GPS and WiFi/WiMAX |
WO2010036885A2 (en) | 2008-09-25 | 2010-04-01 | Fisher-Rosemount Systems, Inc. | Wireless mesh network with pinch point and low battery alerts |
US8350666B2 (en) | 2008-10-15 | 2013-01-08 | Honeywell International Inc. | Apparatus and method for location-based access control in wireless networks |
US7977924B2 (en) | 2008-11-03 | 2011-07-12 | Rosemount Inc. | Industrial process power scavenging device and method of deriving process device power from an industrial process |
KR101037432B1 (en) * | 2009-03-05 | 2011-05-30 | 전자부품연구원 | wireless communication method and demodulator for Magnetic Field Network |
US8363580B2 (en) * | 2009-03-31 | 2013-01-29 | Rosemount Inc. | Disparate radios in a wireless mesh network |
US8837354B2 (en) * | 2009-04-24 | 2014-09-16 | Honeywell International Inc. | Apparatus and method for supporting wireless actuators and other devices in process control systems |
US9674976B2 (en) | 2009-06-16 | 2017-06-06 | Rosemount Inc. | Wireless process communication adapter with improved encapsulation |
US8626087B2 (en) | 2009-06-16 | 2014-01-07 | Rosemount Inc. | Wire harness for field devices used in a hazardous locations |
US10645628B2 (en) * | 2010-03-04 | 2020-05-05 | Rosemount Inc. | Apparatus for interconnecting wireless networks separated by a barrier |
US10761524B2 (en) | 2010-08-12 | 2020-09-01 | Rosemount Inc. | Wireless adapter with process diagnostics |
US8498201B2 (en) | 2010-08-26 | 2013-07-30 | Honeywell International Inc. | Apparatus and method for improving the reliability of industrial wireless networks that experience outages in backbone connectivity |
US8924498B2 (en) | 2010-11-09 | 2014-12-30 | Honeywell International Inc. | Method and system for process control network migration |
US8737244B2 (en) | 2010-11-29 | 2014-05-27 | Rosemount Inc. | Wireless sensor network access point and device RF spectrum analysis system and method |
US20130005372A1 (en) | 2011-06-29 | 2013-01-03 | Rosemount Inc. | Integral thermoelectric generator for wireless devices |
US9310794B2 (en) | 2011-10-27 | 2016-04-12 | Rosemount Inc. | Power supply for industrial process field device |
US20140161010A1 (en) * | 2012-12-12 | 2014-06-12 | Qualcomm Incorporated | Enabling hierarchical wakeup schedules in a wireless system utilizing relays |
US9110838B2 (en) | 2013-07-31 | 2015-08-18 | Honeywell International Inc. | Apparatus and method for synchronizing dynamic process data across redundant input/output modules |
CN103596283A (en) * | 2013-11-28 | 2014-02-19 | 无锡清华信息科学与技术国家实验室物联网技术中心 | Conflict resolving method and system based on correlation sequence |
JP2015164260A (en) * | 2014-02-28 | 2015-09-10 | オムロン株式会社 | Transmission module, information transmission network system, information transmission method, and information transmission program |
EP3119126B1 (en) * | 2014-03-14 | 2021-06-16 | Omron Corporation | Transmission module, network system and information transmission program |
US9720404B2 (en) | 2014-05-05 | 2017-08-01 | Honeywell International Inc. | Gateway offering logical model mapped to independent underlying networks |
US10042330B2 (en) | 2014-05-07 | 2018-08-07 | Honeywell International Inc. | Redundant process controllers for segregated supervisory and industrial control networks |
US9609524B2 (en) | 2014-05-30 | 2017-03-28 | Honeywell International Inc. | Apparatus and method for planning and validating a wireless network |
US10536526B2 (en) | 2014-06-25 | 2020-01-14 | Honeywell International Inc. | Apparatus and method for virtualizing a connection to a node in an industrial control and automation system |
US9699022B2 (en) | 2014-08-01 | 2017-07-04 | Honeywell International Inc. | System and method for controller redundancy and controller network redundancy with ethernet/IP I/O |
US10148485B2 (en) | 2014-09-03 | 2018-12-04 | Honeywell International Inc. | Apparatus and method for on-process migration of industrial control and automation system across disparate network types |
US10536901B2 (en) | 2015-01-27 | 2020-01-14 | Locix, Inc. | Systems and methods for providing communications within wireless sensor networks based on a periodic beacon signal |
US10455368B2 (en) | 2015-10-28 | 2019-10-22 | Locix, Inc. | Systems and methods for providing communications within wireless sensor networks based on at least one periodic guaranteed time slot for sensor nodes |
JP2018510594A (en) * | 2015-01-27 | 2018-04-12 | ロシックス・インコーポレイテッド | System and method for providing a wireless sensor network having an asymmetric network architecture |
US10162827B2 (en) | 2015-04-08 | 2018-12-25 | Honeywell International Inc. | Method and system for distributed control system (DCS) process data cloning and migration through secured file system |
US10409270B2 (en) | 2015-04-09 | 2019-09-10 | Honeywell International Inc. | Methods for on-process migration from one type of process control device to different type of process control device |
WO2016203623A1 (en) * | 2015-06-18 | 2016-12-22 | 富士通株式会社 | Communication device, communication method, and communication system |
US10296482B2 (en) | 2017-03-07 | 2019-05-21 | Honeywell International Inc. | System and method for flexible connection of redundant input-output modules or other devices |
US10749692B2 (en) | 2017-05-05 | 2020-08-18 | Honeywell International Inc. | Automated certificate enrollment for devices in industrial control systems or other systems |
US10401816B2 (en) | 2017-07-20 | 2019-09-03 | Honeywell International Inc. | Legacy control functions in newgen controllers alongside newgen control functions |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997049197A1 (en) * | 1996-06-17 | 1997-12-24 | Nokia Mobile Phones Limited | Control of transmission power in wireless packet data transfer |
US5845202A (en) * | 1992-11-27 | 1998-12-01 | Motorola, Inc. | Method and apparatus for acknowledge back signaling using a radio telephone system |
US20040137915A1 (en) * | 2002-11-27 | 2004-07-15 | Diener Neil R. | Server and multiple sensor system for monitoring activity in a shared radio frequency band |
WO2004112403A2 (en) | 2003-04-28 | 2004-12-23 | I.D. Systems, Inc. | System and method for managing a remotely located asset |
Family Cites Families (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4367458A (en) * | 1980-08-29 | 1983-01-04 | Ultrak Inc. | Supervised wireless security system |
US4630035A (en) * | 1985-01-04 | 1986-12-16 | Motorola, Inc. | Alarm system having alarm transmitter indentification codes and acoustic ranging |
US4611198A (en) * | 1985-09-19 | 1986-09-09 | Levinson Samuel H | Security and communication system |
US4737770A (en) * | 1986-03-10 | 1988-04-12 | Interactive Technologies, Inc. | Security system with programmable sensor and user data input transmitters |
US4912461A (en) * | 1986-11-05 | 1990-03-27 | Cellular Control Systems Corporation | Apparatus and network for transferring packets of electronic signals and associated method |
US4803487A (en) * | 1987-04-30 | 1989-02-07 | Motorola, Inc. | Portable communications receiver with separate information presentation means |
US4970714A (en) * | 1989-01-05 | 1990-11-13 | International Business Machines Corp. | Adaptive data link protocol |
US5134644A (en) * | 1990-08-17 | 1992-07-28 | Senses International | Data communication device |
US6374311B1 (en) * | 1991-10-01 | 2002-04-16 | Intermec Ip Corp. | Communication network having a plurality of bridging nodes which transmit a beacon to terminal nodes in power saving state that it has messages awaiting delivery |
US5365217A (en) * | 1992-02-20 | 1994-11-15 | Frank J. Toner | Personal security system apparatus and method |
AU7210894A (en) * | 1993-06-25 | 1995-01-17 | Xircom, Inc. | Virtual carrier detection for wireless local area network with distributed control |
US5625651A (en) * | 1994-06-02 | 1997-04-29 | Amati Communications, Inc. | Discrete multi-tone data transmission system using an overhead bus for synchronizing multiple remote units |
US5487068A (en) * | 1994-07-29 | 1996-01-23 | Motorola, Inc. | Method for providing error correction using selective automatic repeat requests in a packet-switched communication system |
US5719883A (en) * | 1994-09-21 | 1998-02-17 | Lucent Technologies Inc. | Adaptive ARQ/FEC technique for multitone transmission |
US6182224B1 (en) * | 1995-09-29 | 2001-01-30 | Cisco Systems, Inc. | Enhanced network services using a subnetwork of communicating processors |
US6292662B1 (en) * | 1995-09-29 | 2001-09-18 | Qualcomm Incorporated | Method and system for processing telephone calls involving two digital wireless subscriber units that avoid double vocoding |
US5751708A (en) * | 1995-10-25 | 1998-05-12 | Lucent Technologies Inc. | Access method for broadband and narrowband networks |
US5805578A (en) * | 1995-10-27 | 1998-09-08 | International Business Machines Corporation | Automatic reconfiguration of multipoint communication channels |
JP3284074B2 (en) * | 1996-03-25 | 2002-05-20 | キヤノン株式会社 | Radio communication system and its control method, radio communication device and its control method |
JP3712812B2 (en) * | 1997-03-05 | 2005-11-02 | 富士通株式会社 | Site diversity reception method in mobile communication system, base station host apparatus in mobile communication system adopting site diversity reception method |
US6058137A (en) * | 1997-09-15 | 2000-05-02 | Partyka; Andrzej | Frequency hopping system for intermittent transmission |
US6125109A (en) * | 1998-02-24 | 2000-09-26 | Repeater Technologies | Delay combiner system for CDMA repeaters and low noise amplifiers |
DE19833967C2 (en) * | 1998-07-28 | 2001-02-08 | Siemens Ag | Reception diversity procedure and radio communication system with diversity reception |
US6813272B1 (en) * | 1999-06-23 | 2004-11-02 | Korea Telecommunication Authority | QoS-based routing method |
US6628607B1 (en) * | 1999-07-09 | 2003-09-30 | Apple Computer, Inc. | Method and apparatus for loop breaking on a serial bus |
ES2243281T3 (en) * | 1999-07-19 | 2005-12-01 | British Telecommunications Public Limited Company | TELECOMMUNICATIONS ROADING. |
US6845087B1 (en) * | 1999-09-20 | 2005-01-18 | Northrop Grumman Corporation | Wideband wireless communications architecture |
US6751731B1 (en) * | 1999-10-12 | 2004-06-15 | International Business Machines Corporation | Piggy-backed key exchange protocol for providing secure, low-overhead browser connections to a server with which a client shares a message encoding scheme |
US6404772B1 (en) * | 2000-07-27 | 2002-06-11 | Symbol Technologies, Inc. | Voice and data wireless communications network and method |
US7031288B2 (en) * | 2000-09-12 | 2006-04-18 | Sri International | Reduced-overhead protocol for discovering new neighbor nodes and detecting the loss of existing neighbor nodes in a network |
US6657586B2 (en) * | 2001-05-03 | 2003-12-02 | Wherenet Corp | System and method for locating an object using global positioning system receiver |
US6990137B2 (en) * | 2001-05-17 | 2006-01-24 | Qualcomm, Incorporated | System and method for received signal prediction in wireless communications systems |
US7280545B1 (en) * | 2001-12-20 | 2007-10-09 | Nagle Darragh J | Complex adaptive routing system and method for a nodal communication network |
KR100450407B1 (en) * | 2002-08-28 | 2004-09-30 | 한국전자통신연구원 | A Multi QoS Path Computation Method |
GB0306603D0 (en) * | 2003-03-21 | 2003-04-30 | First Person Invest Ltd | Method and apparatus for broadcasting communications |
US7242294B2 (en) * | 2003-09-17 | 2007-07-10 | Agilent Technologies, Inc | System and method for using mobile collectors for accessing a wireless sensor network |
KR100500295B1 (en) * | 2003-09-29 | 2005-07-11 | 현대모비스 주식회사 | apparatus for protecting slipping of vehicle in slope |
JP4465361B2 (en) * | 2003-10-09 | 2010-05-19 | パナソニック株式会社 | Communication terminal and method for obtaining detection timing of communication medium characteristics |
US7388841B2 (en) * | 2003-10-20 | 2008-06-17 | Mitsubishi Electric Research Laboratories, Inc. | Selecting multiple paths in overlay networks for streaming data |
US20050201349A1 (en) * | 2004-03-15 | 2005-09-15 | Honeywell International Inc. | Redundant wireless node network with coordinated receiver diversity |
US8929228B2 (en) * | 2004-07-01 | 2015-01-06 | Honeywell International Inc. | Latency controlled redundant routing |
US7444443B2 (en) * | 2005-02-28 | 2008-10-28 | Freescale Semiconductor, Inc. | Method of repeating data transmission between network devices by timing a first predetermined period after previous first data transmission |
-
2005
- 2005-04-12 US US11/103,982 patent/US20060227729A1/en not_active Abandoned
-
2006
- 2006-03-21 EP EP06739050A patent/EP1869939A1/en not_active Withdrawn
- 2006-03-21 CN CN200680020790.3A patent/CN101194531A/en active Pending
- 2006-03-21 WO PCT/US2006/010105 patent/WO2006113023A1/en active Application Filing
- 2006-03-21 CA CA002604479A patent/CA2604479A1/en not_active Abandoned
- 2006-03-21 JP JP2008506475A patent/JP2008537871A/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5845202A (en) * | 1992-11-27 | 1998-12-01 | Motorola, Inc. | Method and apparatus for acknowledge back signaling using a radio telephone system |
WO1997049197A1 (en) * | 1996-06-17 | 1997-12-24 | Nokia Mobile Phones Limited | Control of transmission power in wireless packet data transfer |
US20040137915A1 (en) * | 2002-11-27 | 2004-07-15 | Diener Neil R. | Server and multiple sensor system for monitoring activity in a shared radio frequency band |
WO2004112403A2 (en) | 2003-04-28 | 2004-12-23 | I.D. Systems, Inc. | System and method for managing a remotely located asset |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11924757B2 (en) | 2015-01-27 | 2024-03-05 | ZaiNar, Inc. | Systems and methods for providing wireless asymmetric network architectures of wireless devices with power management features |
US11856483B2 (en) | 2016-07-10 | 2023-12-26 | ZaiNar, Inc. | Method and system for radiolocation asset tracking via a mesh network |
Also Published As
Publication number | Publication date |
---|---|
CA2604479A1 (en) | 2006-10-26 |
JP2008537871A (en) | 2008-09-25 |
US20060227729A1 (en) | 2006-10-12 |
CN101194531A (en) | 2008-06-04 |
EP1869939A1 (en) | 2007-12-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20060227729A1 (en) | Wireless communication system with collision avoidance protocol | |
CN101176308B (en) | High-density wireless local area network | |
US7444443B2 (en) | Method of repeating data transmission between network devices by timing a first predetermined period after previous first data transmission | |
US8804584B2 (en) | Periodic synchronization link quality in a mesh network | |
EP3664303B1 (en) | Wireless communication system | |
CN1702993B (en) | Wireless communication apparatus | |
EP1657852A1 (en) | Beaconless communication in ad hoc networks | |
US7372855B2 (en) | System and method for synchronizing an IEEE 802.11 power-save interval | |
US10959128B2 (en) | Bluetooth low energy connected isochronous stream acknowledgement and flush algorithm and implementation | |
US7536194B2 (en) | Method and system for providing an energy efficient exchange of information in wireless networks | |
EP1770910A1 (en) | Method and system for reliabe data transmission in wireless networks | |
CN103391603A (en) | Low power consumption transmission method for large data information in wireless sensor network | |
US20230300872A1 (en) | Operating method of a communication node in awireless communication network, associatedcommunication node, communication system andstorage system | |
EP1322075B1 (en) | Improving connection rate in wireless communication | |
WO2006048969A1 (en) | Transmitter apparatus | |
GB2347585A (en) | Method of allocating wireless resource for transmitting data | |
KR20070090588A (en) | Concurrent transmission method over multiple radio links | |
CN110176967B (en) | Measuring system | |
EP1770878B1 (en) | Method and system for time synchronization in communication networks | |
JP6216402B2 (en) | Terminal for data acquisition and transmission | |
US20100091756A1 (en) | Method of using acknowledgment tones for data consistency in intra-vehicular wireless networks |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200680020790.3 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006739050 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2604479 Country of ref document: CA Ref document number: 2008506475 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 8063/DELNP/2007 Country of ref document: IN |
|
NENP | Non-entry into the national phase |
Ref country code: RU |