GB8511018D0 - Communications apparatus - Google Patents

Communications apparatus

Info

Publication number
GB8511018D0
GB8511018D0 GB858511018A GB8511018A GB8511018D0 GB 8511018 D0 GB8511018 D0 GB 8511018D0 GB 858511018 A GB858511018 A GB 858511018A GB 8511018 A GB8511018 A GB 8511018A GB 8511018 D0 GB8511018 D0 GB 8511018D0
Authority
GB
United Kingdom
Prior art keywords
transceiver
communications apparatus
transmit power
existing users
power
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
GB858511018A
Other versions
GB2174573B (en
GB2174573A (en
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.)
Daka Research Inc
Sinclair Research Ltd
Original Assignee
Daka Research Inc
Sinclair Research Ltd
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
Application filed by Daka Research Inc, Sinclair Research Ltd filed Critical Daka Research Inc
Priority to GB8511018A priority Critical patent/GB2174573B/en
Publication of GB8511018D0 publication Critical patent/GB8511018D0/en
Publication of GB2174573A publication Critical patent/GB2174573A/en
Application granted granted Critical
Publication of GB2174573B publication Critical patent/GB2174573B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • 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
    • H04W52/38—TPC being performed in particular situations
    • H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

In communications apparatus, particularly cordless telephone sets, there is a need to maximise the number of communication links that can be made from a given area or volume. This is achieved by reducing the transmit power of a transceiver Y below its maximum in response to a signal level 50 of existing users V on that channel, as measured by the transceiver Y that is setting up a call. In particular, the reduction in transmit power p' is dependent on (e.g. equal to) the amount p by which the power of existing users exceeds a predetermined lower threshold TL. <IMAGE>
GB8511018A 1985-05-01 1985-05-01 Communications apparatus and method Expired GB2174573B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8511018A GB2174573B (en) 1985-05-01 1985-05-01 Communications apparatus and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8511018A GB2174573B (en) 1985-05-01 1985-05-01 Communications apparatus and method

Publications (3)

Publication Number Publication Date
GB8511018D0 true GB8511018D0 (en) 1985-06-12
GB2174573A GB2174573A (en) 1986-11-05
GB2174573B GB2174573B (en) 1989-06-28

Family

ID=10578473

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8511018A Expired GB2174573B (en) 1985-05-01 1985-05-01 Communications apparatus and method

Country Status (1)

Country Link
GB (1) GB2174573B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4001810C2 (en) * 1990-01-23 1996-02-08 Loewe Opta Gmbh Energy saving circuit in a mobile device for wireless communication
GB2241851A (en) * 1990-03-09 1991-09-11 Philips Electronic Associated Optimising transmitter power in a communications system
US5475861A (en) * 1992-07-01 1995-12-12 Motorola, Inc. Method for controlling transmission power in a communication system
BR9911441A (en) * 1998-06-23 2001-03-20 Siemens Ag Process for power regulation of point-to-multipoint telecommunications connections in telecommunications systems with wireless telecommunications and with the operation of uncoordinated and unlicensed systems
US6654608B1 (en) * 1999-04-27 2003-11-25 Telefonaktiebolaget Lm Ericsson (Publ) Tailored power levels at handoff and call setup
GB0323429D0 (en) 2003-10-07 2003-11-05 Roke Manor Research Spectrum sharing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495648A (en) * 1982-12-27 1985-01-22 At&T Bell Laboratories Transmitter power control circuit
JPS60190035A (en) * 1984-03-09 1985-09-27 Nec Corp Control system of satellite communication transmission power

Also Published As

Publication number Publication date
GB2174573B (en) 1989-06-28
GB2174573A (en) 1986-11-05

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20050430