CA2206365A1 - Mobile communication system - Google Patents

Mobile communication system

Info

Publication number
CA2206365A1
CA2206365A1 CA002206365A CA2206365A CA2206365A1 CA 2206365 A1 CA2206365 A1 CA 2206365A1 CA 002206365 A CA002206365 A CA 002206365A CA 2206365 A CA2206365 A CA 2206365A CA 2206365 A1 CA2206365 A1 CA 2206365A1
Authority
CA
Canada
Prior art keywords
control
transmission power
signal point
carrier signal
circuit
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
CA002206365A
Other languages
French (fr)
Other versions
CA2206365C (en
Inventor
Toshifumi Sato
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.)
NEC Corp
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
Application filed by Individual filed Critical Individual
Publication of CA2206365A1 publication Critical patent/CA2206365A1/en
Application granted granted Critical
Publication of CA2206365C publication Critical patent/CA2206365C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/221—TPC being performed according to specific parameters taking into account previous information or commands using past power control commands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • 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
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/223—TPC being performed according to specific parameters taking into account previous information or commands predicting future states of the transmission

Abstract

A mobile communication system is arranged to have a code divisional multi access system as in the North American standard system and to control a transmission power for reducing an influence of interference of one channel to the others by lowering a control error of the electric power transmitted on an up line. In the base station, a receiving section of a transceiving unit provides a pilot symbol in-phase adding circuit for detecting a carrier signal point represented by an in-phase component and a quadrature component at regular intervals. The amplitude of the detected carrier signal point is corrected by an amplitude correcting circuit by using the previous control values for transmission power read from a memory. Then, a predicting circuit predicts a carrier signal point at a time when the next control for transmission power is executed by using the corrected carrier- signal point. The predicted carrier signal point is compared with a reference signal through a comparing circuit. Next, a transmission power control circuit generates a control value for transmission power at a time when the next control for transmission power is executed, transmits the control value to the mobile devices, and store the control value in the memory. The mobile devices control the transmission power based on the control value.
CA 2206365 1996-05-30 1997-05-28 Mobile communication system Expired - Fee Related CA2206365C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8136262A JP2785804B2 (en) 1996-05-30 1996-05-30 Mobile communication system
JP8-136262 1996-05-30

Publications (2)

Publication Number Publication Date
CA2206365A1 true CA2206365A1 (en) 1997-11-30
CA2206365C CA2206365C (en) 2002-01-01

Family

ID=15171082

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2206365 Expired - Fee Related CA2206365C (en) 1996-05-30 1997-05-28 Mobile communication system

Country Status (9)

Country Link
US (1) US6088324A (en)
EP (1) EP0810743B1 (en)
JP (1) JP2785804B2 (en)
KR (1) KR100270822B1 (en)
CN (2) CN1109449C (en)
AU (1) AU716608B2 (en)
CA (1) CA2206365C (en)
DE (1) DE69728211T2 (en)
HK (1) HK1058585A1 (en)

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Also Published As

Publication number Publication date
HK1058585A1 (en) 2004-05-21
JP2785804B2 (en) 1998-08-13
JPH09321699A (en) 1997-12-12
DE69728211D1 (en) 2004-04-29
EP0810743A2 (en) 1997-12-03
AU716608B2 (en) 2000-03-02
CN1447548A (en) 2003-10-08
AU2368697A (en) 1997-12-04
CN1167411A (en) 1997-12-10
CN1109449C (en) 2003-05-21
CN1215669C (en) 2005-08-17
KR970078176A (en) 1997-12-12
CA2206365C (en) 2002-01-01
DE69728211T2 (en) 2005-03-10
EP0810743A3 (en) 2000-12-13
US6088324A (en) 2000-07-11
EP0810743B1 (en) 2004-03-24
KR100270822B1 (en) 2000-11-01

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Effective date: 20130528

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Effective date: 20130528