CA2092292A1 - A multiple user spread-spectrum communication system - Google Patents

A multiple user spread-spectrum communication system

Info

Publication number
CA2092292A1
CA2092292A1 CA2092292A CA2092292A CA2092292A1 CA 2092292 A1 CA2092292 A1 CA 2092292A1 CA 2092292 A CA2092292 A CA 2092292A CA 2092292 A CA2092292 A CA 2092292A CA 2092292 A1 CA2092292 A1 CA 2092292A1
Authority
CA
Canada
Prior art keywords
channel
site
assigned
communication system
received signal
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
CA2092292A
Other languages
French (fr)
Other versions
CA2092292C (en
Inventor
Dennis Ray Schaeffer
Michael D. Kotzin
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.)
Motorola Solutions 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
Application filed by Individual filed Critical Individual
Publication of CA2092292A1 publication Critical patent/CA2092292A1/en
Application granted granted Critical
Publication of CA2092292C publication Critical patent/CA2092292C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J4/00—Combined time-division and frequency-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes

Abstract

A communication system having a site (42) employing a plurality of communication channels. Each channel is assigned a desired received signal strength threshold. A channel is assigned to a subscriber unit (43a 43b) based upon the strength of the sig-nal received at the site (42) and the power control range of the suscriber unit (43a, 43b). The selection of a channel may be per-formed either by the site (42) or the subscriber unit (43a 43b). In an FDMA environment (50), each separate frequency division channel may be assigned different received signal strength thresholds. In a non-overlapping time interval (TDMA) environment (70), each separate time division channel may be assigned different received signal strength thresholds. In another embodiment (80), a combination of FDMA and TDMA environments can be used.
CA002092292A 1991-08-01 1992-06-08 A multiple user spread-spectrum communication system Expired - Fee Related CA2092292C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US739,037 1991-08-01
US07/739,037 US5210771A (en) 1991-08-01 1991-08-01 Multiple user spread-spectrum communication system

Publications (2)

Publication Number Publication Date
CA2092292A1 true CA2092292A1 (en) 1993-02-02
CA2092292C CA2092292C (en) 1996-06-04

Family

ID=24970547

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002092292A Expired - Fee Related CA2092292C (en) 1991-08-01 1992-06-08 A multiple user spread-spectrum communication system

Country Status (15)

Country Link
US (1) US5210771A (en)
JP (1) JP2697306B2 (en)
KR (1) KR960011867B1 (en)
CN (1) CN1066301C (en)
BR (1) BR9205359A (en)
CA (1) CA2092292C (en)
DE (2) DE4292564C2 (en)
FR (1) FR2680064A1 (en)
GB (1) GB2264027B (en)
HK (1) HK1007225A1 (en)
IL (1) IL102076A (en)
IT (1) IT1258453B (en)
MX (1) MX9204488A (en)
SG (1) SG45273A1 (en)
WO (1) WO1993003558A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5914947A (en) * 1994-04-05 1999-06-22 Kabushiki Kaisha Toshiba Mobile radio communication system which allocates spread codes mobiles which are able to determine the distance between a mobile and a base station

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Also Published As

Publication number Publication date
CN1066301C (en) 2001-05-23
ITRM920575A0 (en) 1992-07-27
KR930702832A (en) 1993-09-09
HK1007225A1 (en) 1999-04-01
FR2680064B1 (en) 1994-12-23
BR9205359A (en) 1994-05-31
GB9306738D0 (en) 1993-06-09
IT1258453B (en) 1996-02-26
GB2264027B (en) 1996-01-24
GB2264027A (en) 1993-08-11
DE4292564T1 (en) 1997-07-31
CN1069610A (en) 1993-03-03
ITRM920575A1 (en) 1994-01-27
DE4292564C2 (en) 1998-01-29
FR2680064A1 (en) 1993-02-05
US5210771A (en) 1993-05-11
WO1993003558A1 (en) 1993-02-18
KR960011867B1 (en) 1996-09-03
MX9204488A (en) 1993-02-01
CA2092292C (en) 1996-06-04
SG45273A1 (en) 1998-01-16
JPH06501145A (en) 1994-01-27
JP2697306B2 (en) 1998-01-14
IL102076A (en) 1994-12-29

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