CA2269223A1 - Method and apparatus for providing high speed data communications in a cellular environment - Google Patents

Method and apparatus for providing high speed data communications in a cellular environment

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Publication number
CA2269223A1
CA2269223A1 CA002269223A CA2269223A CA2269223A1 CA 2269223 A1 CA2269223 A1 CA 2269223A1 CA 002269223 A CA002269223 A CA 002269223A CA 2269223 A CA2269223 A CA 2269223A CA 2269223 A1 CA2269223 A1 CA 2269223A1
Authority
CA
Canada
Prior art keywords
communication station
digital data
selecting
format
receiving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002269223A
Other languages
French (fr)
Other versions
CA2269223C (en
Inventor
Ephraim Zehavi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24980247&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2269223(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2269223A1 publication Critical patent/CA2269223A1/en
Application granted granted Critical
Publication of CA2269223C publication Critical patent/CA2269223C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate
    • 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
    • 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
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • 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
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0072—Error control for data other than payload data, e.g. control data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

A method and apparatus for transmitting digital data in a cellular environment. Adjacent cells of the cellular system (1 and 2A-2F) are prevented from simultaneously transmitting data. Because the noise from transmission of adjacent cells is a primary source of interference, the transmission rate of power limited base stations (1-3) can be dramatically increased when the noise from adjacent cells is eliminated. The transmissions to each subscriber station (6) are made at a fixed transmission power level. However, the data rate of transmitted signals differs from one subscriber station (6) to another depending the path loss differences. In a first exemplary embodiment, the data rate of transmissions to a subscriber station (6) is determined by selecting an encoding rate for the transmitted signal while holding the symbol rate constant. In a second exemplary embodiment, the data rate of transmission to a subscriber station (6) is determined by selecting a modulation format for the transmitted signal which directly changes the symbol rate of transmission to a subscriber station (6).

Claims (24)

1. A method for transmitting digital data from a first communication station to a second communication station, comprising the steps of:
determining a distance between said first communication station and said second communication station;
selecting an information rate for transmission in accordance with said distance; and transmitting said digital data at said information rate.
2. The method of Claim 1 wherein said step of selecting said information rate comprises selecting an encoding rate for said digital data.
3. The method of Claim 1 wherein said step of selecting said information rate comprises selecting a modulation format for said digital data.
4. The method of Claim 2 wherein said step selecting of an encoding rate comprises selecting one of a predetermined set of convolutional encoding rates.
5. The method of Claim 1 wherein said step of determining said distance comprises the steps of:
transmitting a location message from said first communication station to said second communication station; and determining said distance in accordance with said location message.
6. The method of Claim 1 wherein said step of determining said distance comprises the steps of:
transmitting a reference signal at a known power;
measuring received power of said reference signal; and computing a value for said distance in accordance with said known power and said received power.
7. The method of Claim 1 wherein said step of transmitting said digital data at said data rate is performed at a fixed maximum transmission energy.
8. The method of Claim 1 further comprising the step of preventing at least one adjacent first communication station from transmitting when said first communication station is transmitting.
9. In a communication system wherein a first communication station transmits digital data to a second communication station wherein the information rate of said digital data is determined in accordance with the path loss between said first communication station and said second communication station, a method for receiving said digital data comprising the steps of:
receiving at said second communication a signal indicating said information rate;
selecting at said second communication station a receiving format in accordance with said data rate; and receiving said digital data in accordance with said selected receiving format.
10. The method of Claim 9 wherein said step of selecting a receiving format comprises selecting a decoding format.
11. The method of Claim 10 wherein said step of selecting a receiving format comprises selecting a trellis decoding format.
12. The method of Claim 9 wherein said step of selecting a receiving format comprises selecting a demodulation format.
13. An apparatus for transmitting digital data from a first communication station to a second communication station comprising:
transmission controller for selecting a transmission format in accordance with the distance between said first communication station and said second communication station and for providing a transmission format signal indicative of said selected transmission format; and transmission system for receiving said digital data and said transmission format signal and for transmitting said digital data in accordance with said selected transmission format.
14. The apparatus of Claim 13 wherein said transmission controller selects an encoding rate for said digital data.
15. The apparatus of Claim 13 wherein said transmission controller selects a modulation format for said digital data.
16. The apparatus of Claim 14 wherein said transmission controller selects one of a predetermined set of convolutional encoding rates.
17. The apparatus of Claim 13 further comprising:
a receiver subsystem for receiving a location message from said second communication station; and wherein said transmission controller is for receiving said location message and for computing said distance between said first communication station and said second communication station in accordance with said location message.
18. The apparatus of Claim 13 further comprising:
a receiver subsystem for receiving a signal of know transmission energy from said second communication station; and wherein said transmission controller is for measuring the energy of said received signal and for computing the distance between said first communication station and said second communication station in accordance with said measured energy of said received signal.
19. The apparatus of Claim 13 wherein said transmission system transmits said digital data at a fixed maximum transmission energy.
20. The apparatus of Claim 13 wherein said first communication station is a cellular base station serving a first cell and wherein said transmission controller is further for receiving a transmit signal indicating a time interval in which to transmit and wherein said transmit signal is provided such that when said first communication station is transmitting other base stations serving cells adjacent to said first cell are prohibited from transmitting.
21. In a communication system wherein a first communication station transmits digital data to a second communication station wherein the information rate of said digital data is determined in accordance with the distance between said first communication station and said second communication station, an apparatus for receiving said digital data comprising the steps of:

receiver subsystem for receiving at said second communication a signal indicating said information rate;
control processor for selecting at said second communication station a receiving format in accordance with said information rate; and wherein said receiver subsystem is further for receiving said digital data in accordance with said selected receiving format.
22. The apparatus of Claim 21 wherein said control processor is for selecting a decoding format.
23. The apparatus of Claim 22 wherein said control processor is for selecting a trellis decoding format.
24. The method of Claim 21 wherein said control processor is for selecting a demodulation format.
CA002269223A 1996-10-29 1997-10-27 Method and apparatus for providing high speed data communications in a cellular environment Expired - Lifetime CA2269223C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/741,320 1996-10-29
US08/741,320 US6496543B1 (en) 1996-10-29 1996-10-29 Method and apparatus for providing high speed data communications in a cellular environment
PCT/US1997/019677 WO1998019481A2 (en) 1996-10-29 1997-10-27 Method and apparatus for providing high speed data communications in a cellular environment

Publications (2)

Publication Number Publication Date
CA2269223A1 true CA2269223A1 (en) 1998-05-07
CA2269223C CA2269223C (en) 2010-02-02

Family

ID=24980247

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002269223A Expired - Lifetime CA2269223C (en) 1996-10-29 1997-10-27 Method and apparatus for providing high speed data communications in a cellular environment

Country Status (20)

Country Link
US (4) US6496543B1 (en)
EP (5) EP2360862A1 (en)
JP (4) JP4130476B2 (en)
KR (2) KR100507425B1 (en)
CN (3) CN100428807C (en)
AT (2) ATE379930T1 (en)
AU (1) AU722340B2 (en)
BR (3) BR9712455A (en)
CA (1) CA2269223C (en)
DE (2) DE69738337T2 (en)
ES (2) ES2294059T3 (en)
HK (2) HK1076203A1 (en)
ID (1) ID21870A (en)
IL (2) IL129306A (en)
NO (1) NO318282B1 (en)
NZ (1) NZ335018A (en)
RU (1) RU2193291C2 (en)
TW (1) TW408539B (en)
UA (1) UA57041C2 (en)
WO (1) WO1998019481A2 (en)

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