CA2224684A1 - Method and apparatus for determining signal strength in a spread spectrum communication system having a variable data rate - Google Patents

Method and apparatus for determining signal strength in a spread spectrum communication system having a variable data rate

Info

Publication number
CA2224684A1
CA2224684A1 CA002224684A CA2224684A CA2224684A1 CA 2224684 A1 CA2224684 A1 CA 2224684A1 CA 002224684 A CA002224684 A CA 002224684A CA 2224684 A CA2224684 A CA 2224684A CA 2224684 A1 CA2224684 A1 CA 2224684A1
Authority
CA
Canada
Prior art keywords
signal strength
data rate
power control
control groups
frame
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
CA002224684A
Other languages
French (fr)
Other versions
CA2224684C (en
Inventor
Noam Abraham Ziv
Roberto Padovani
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
Application filed by Individual filed Critical Individual
Publication of CA2224684A1 publication Critical patent/CA2224684A1/en
Application granted granted Critical
Publication of CA2224684C publication Critical patent/CA2224684C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • 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
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • 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
    • 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
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • 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
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Radio Relay Systems (AREA)
  • Communication Control (AREA)

Abstract

A method and apparatus of determining signal strength, regardless of the signal data rate, in a receiver receiving signals from a variable rate transmitter. The incoming signal is comprised of a series of frames. Each frame is comprised of a number of power control groups containing data. The number of the power control groups containing data within each frame is dependent on the unknown data rate.
The position of the power control groups within the frame is a pseudorandom.
The signal strength of an incoming signal of unknown data rate is determined based upon an active set of power control groups within a frame. The active set of power control groups contain data independently of the unknown data rate. The signal strength information may be used to indicate that the signal strength is sufficient to perform further signal processing.
CA002224684A 1995-06-16 1996-06-17 Method and apparatus for determining signal strength in a spread spectrum communication system having a variable data rate Expired - Fee Related CA2224684C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/490,694 US5703902A (en) 1995-06-16 1995-06-16 Method and apparatus for determining signal strength in a variable data rate system
US08/490,694 1995-06-16
PCT/US1996/010458 WO1997000562A1 (en) 1995-06-16 1996-06-17 Method and apparatus for determining signal strength in a spread spectrum communication system having a variable data rate

Publications (2)

Publication Number Publication Date
CA2224684A1 true CA2224684A1 (en) 1997-01-03
CA2224684C CA2224684C (en) 2004-03-23

Family

ID=23949098

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002224684A Expired - Fee Related CA2224684C (en) 1995-06-16 1996-06-17 Method and apparatus for determining signal strength in a spread spectrum communication system having a variable data rate

Country Status (19)

Country Link
US (1) US5703902A (en)
EP (1) EP0835560B1 (en)
JP (1) JP3833711B2 (en)
KR (1) KR100388328B1 (en)
CN (1) CN1097898C (en)
AR (1) AR002492A1 (en)
AT (1) ATE301891T1 (en)
AU (1) AU700122B2 (en)
BR (1) BR9608881B1 (en)
CA (1) CA2224684C (en)
DE (1) DE69635049T2 (en)
EA (1) EA000310B1 (en)
FI (1) FI974471A (en)
HK (1) HK1010953A1 (en)
IL (1) IL118635A (en)
MY (1) MY115021A (en)
TW (1) TW413985B (en)
WO (1) WO1997000562A1 (en)
ZA (1) ZA964961B (en)

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Also Published As

Publication number Publication date
KR19990022984A (en) 1999-03-25
IL118635A (en) 1999-12-31
ATE301891T1 (en) 2005-08-15
EP0835560A1 (en) 1998-04-15
CN1187917A (en) 1998-07-15
BR9608881A (en) 1999-07-06
EA199800064A1 (en) 1998-08-27
MX9710144A (en) 1998-03-31
FI974471A (en) 1998-02-16
ZA964961B (en) 1997-01-08
DE69635049T2 (en) 2006-05-24
US5703902A (en) 1997-12-30
EP0835560B1 (en) 2005-08-10
TW413985B (en) 2000-12-01
AU700122B2 (en) 1998-12-24
FI974471A0 (en) 1997-12-09
WO1997000562A1 (en) 1997-01-03
EA000310B1 (en) 1999-04-29
KR100388328B1 (en) 2003-10-04
JPH11507798A (en) 1999-07-06
DE69635049D1 (en) 2005-09-15
CA2224684C (en) 2004-03-23
AR002492A1 (en) 1998-03-25
IL118635A0 (en) 1996-10-16
AU6386296A (en) 1997-01-15
MY115021A (en) 2003-03-31
JP3833711B2 (en) 2006-10-18
BR9608881B1 (en) 2008-11-18
CN1097898C (en) 2003-01-01
HK1010953A1 (en) 1999-07-02

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Effective date: 20120618