WO2003041343A3 - Fixed deterministic post-backoff for cyclic prioritized multiple access (cpma) contention-free sessions - Google Patents

Fixed deterministic post-backoff for cyclic prioritized multiple access (cpma) contention-free sessions Download PDF

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Publication number
WO2003041343A3
WO2003041343A3 PCT/US2002/034434 US0234434W WO03041343A3 WO 2003041343 A3 WO2003041343 A3 WO 2003041343A3 US 0234434 W US0234434 W US 0234434W WO 03041343 A3 WO03041343 A3 WO 03041343A3
Authority
WO
WIPO (PCT)
Prior art keywords
backoff
contention
fixed
cpma
bkoff
Prior art date
Application number
PCT/US2002/034434
Other languages
French (fr)
Other versions
WO2003041343A2 (en
Inventor
Mathilde Benveniste
Original Assignee
At & T Corp
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
Priority claimed from US09/985,257 external-priority patent/US7095754B2/en
Priority claimed from US10/187,132 external-priority patent/US7277413B2/en
Priority claimed from US10/256,384 external-priority patent/US7280517B2/en
Priority claimed from US10/256,471 external-priority patent/US7277415B2/en
Priority claimed from US10/256,305 external-priority patent/US7245604B2/en
Priority claimed from US10/256,309 external-priority patent/US7245605B2/en
Priority claimed from US10/256,299 external-priority patent/US7248600B2/en
Priority claimed from US10/256,516 external-priority patent/US7180905B2/en
Application filed by At & T Corp filed Critical At & T Corp
Publication of WO2003041343A2 publication Critical patent/WO2003041343A2/en
Publication of WO2003041343A3 publication Critical patent/WO2003041343A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2416—Real-time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • 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]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Landscapes

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

Abstract

A cyclic prioritized multiple access (CPMA) method is disclosed which includes Fixed Deterministic Post-Backoff. Fixed deterministic post-backoff reduces conflicts between access points (102,152) of overlapping cells (170). A fixed deterministic backoff delay (Bkoff times a fixed number of idle time slots) is used by all access points (102,104A,104B,106,152,154A,154B), with the value of Bkoff being greater than the number of overlapping cells. Each access point has a backoff timer that is counted down using the shortest interframe space possible. A contention-free session (CFS) is initiated when the backoff timer expires, and it is then reset to the value of Bkoff to start a new cycle. A cycle is measured in terms of idle time slots instead of a fixed time interval. Contention-based transmissions can be attempted by an access point or other stations in the cell using their assigned priority while the access point is counting down its backoff timer.
PCT/US2002/034434 2001-11-02 2002-10-29 Fixed deterministic post-backoff for cyclic prioritized multiple access (cpma) contention-free sessions WO2003041343A2 (en)

Applications Claiming Priority (24)

Application Number Priority Date Filing Date Title
US33093001P 2001-11-02 2001-11-02
US09/985,257 2001-11-02
US60/330,930 2001-11-02
US09/985,257 US7095754B2 (en) 2000-11-03 2001-11-02 Tiered contention multiple access (TCMA): a method for priority-based shared channel access
US33103001P 2001-11-07 2001-11-07
US60/331,030 2001-11-07
US33121101P 2001-11-13 2001-11-13
US60/331,211 2001-11-13
US34234301P 2001-12-21 2001-12-21
US60/342,343 2001-12-21
US10/187,132 US7277413B2 (en) 2001-07-05 2002-06-28 Hybrid coordination function (HCF) access through tiered contention and overlapped wireless cell mitigation
US10/187,132 2002-06-28
US10/256,384 US7280517B2 (en) 2001-11-02 2002-09-27 Wireless LANs and neighborhood capture
US10/256,305 2002-09-27
US10/256,471 US7277415B2 (en) 2001-11-02 2002-09-27 Staggered startup for cyclic prioritized multiple access (CPMA) contention-free sessions
US10/256,384 2002-09-27
US10/256,305 US7245604B2 (en) 2001-11-02 2002-09-27 Fixed deterministic post-backoff for cyclic prioritized multiple access (CPMA) contention-free sessions
US10/256,309 US7245605B2 (en) 2001-11-02 2002-09-27 Preemptive packet for maintaining contiguity in cyclic prioritized multiple access (CPMA) contention-free sessions
US10/256,471 2002-09-27
US10/256,299 US7248600B2 (en) 2001-11-02 2002-09-27 ‘Shield’: protecting high priority channel access attempts in overlapped wireless cells
US10/256,309 2002-09-27
US10/256,299 2002-09-27
US10/256,516 US7180905B2 (en) 2001-11-02 2002-09-27 Access method for periodic contention-free sessions
US10/256,516 2002-09-27

Publications (2)

Publication Number Publication Date
WO2003041343A2 WO2003041343A2 (en) 2003-05-15
WO2003041343A3 true WO2003041343A3 (en) 2003-07-10

Family

ID=27583788

Family Applications (6)

Application Number Title Priority Date Filing Date
PCT/US2002/036425 WO2003039054A2 (en) 2001-11-02 2002-10-28 Wireless lans and neighborhood capture
PCT/US2002/034433 WO2003041427A1 (en) 2001-11-02 2002-10-29 'shield': protecting high priority channel access attempts in overlapped wireless cells
PCT/US2002/034585 WO2003043357A1 (en) 2001-11-02 2002-10-29 Access method for periodic contention-free sessions
PCT/US2002/034434 WO2003041343A2 (en) 2001-11-02 2002-10-29 Fixed deterministic post-backoff for cyclic prioritized multiple access (cpma) contention-free sessions
PCT/US2002/034430 WO2003041428A1 (en) 2001-11-02 2002-10-29 Staggered startup for cyclic prioritized multiple acess (cpma) contention-free sessions
PCT/US2002/034406 WO2003041346A1 (en) 2001-11-02 2002-10-29 Preemptive packet for maintaining contiguity in cyclic prioritized multiple access (cpma) contention-free sessions

Family Applications Before (3)

Application Number Title Priority Date Filing Date
PCT/US2002/036425 WO2003039054A2 (en) 2001-11-02 2002-10-28 Wireless lans and neighborhood capture
PCT/US2002/034433 WO2003041427A1 (en) 2001-11-02 2002-10-29 'shield': protecting high priority channel access attempts in overlapped wireless cells
PCT/US2002/034585 WO2003043357A1 (en) 2001-11-02 2002-10-29 Access method for periodic contention-free sessions

Family Applications After (2)

Application Number Title Priority Date Filing Date
PCT/US2002/034430 WO2003041428A1 (en) 2001-11-02 2002-10-29 Staggered startup for cyclic prioritized multiple acess (cpma) contention-free sessions
PCT/US2002/034406 WO2003041346A1 (en) 2001-11-02 2002-10-29 Preemptive packet for maintaining contiguity in cyclic prioritized multiple access (cpma) contention-free sessions

Country Status (2)

Country Link
AU (1) AU2002346389A1 (en)
WO (6) WO2003039054A2 (en)

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US7095754B2 (en) 2000-11-03 2006-08-22 At&T Corp. Tiered contention multiple access (TCMA): a method for priority-based shared channel access
US7027462B2 (en) 2001-01-02 2006-04-11 At&T Corp. Random medium access methods with backoff adaptation to traffic
US7277413B2 (en) 2001-07-05 2007-10-02 At & T Corp. Hybrid coordination function (HCF) access through tiered contention and overlapped wireless cell mitigation
US7136361B2 (en) 2001-07-05 2006-11-14 At&T Corp. Hybrid coordination function (HCF) access through tiered contention and overlapped wireless cell mitigation
US7248600B2 (en) 2001-11-02 2007-07-24 At&T Corp. ‘Shield’: protecting high priority channel access attempts in overlapped wireless cells
US7277415B2 (en) 2001-11-02 2007-10-02 At&T Corp. Staggered startup for cyclic prioritized multiple access (CPMA) contention-free sessions
US7180905B2 (en) 2001-11-02 2007-02-20 At & T Corp. Access method for periodic contention-free sessions
US7245604B2 (en) 2001-11-02 2007-07-17 At&T Corp. Fixed deterministic post-backoff for cyclic prioritized multiple access (CPMA) contention-free sessions
US7245605B2 (en) 2001-11-02 2007-07-17 At&T Corp. Preemptive packet for maintaining contiguity in cyclic prioritized multiple access (CPMA) contention-free sessions
US7280517B2 (en) 2001-11-02 2007-10-09 At&T Corp. Wireless LANs and neighborhood capture
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US9226308B2 (en) 2003-10-15 2015-12-29 Qualcomm Incorporated Method, apparatus, and system for medium access control
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US8233462B2 (en) 2003-10-15 2012-07-31 Qualcomm Incorporated High speed media access control and direct link protocol
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Also Published As

Publication number Publication date
WO2003043357A1 (en) 2003-05-22
WO2003041427A1 (en) 2003-05-15
AU2002346389A1 (en) 2003-05-12
WO2003039054A2 (en) 2003-05-08
WO2003041343A2 (en) 2003-05-15
WO2003039054A3 (en) 2004-02-26
WO2003041428A1 (en) 2003-05-15
WO2003041346A1 (en) 2003-05-15

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