CA2258888A1 - Method and apparatus for monitoring link activity to prevent system deadlock in a dispatch system - Google Patents

Method and apparatus for monitoring link activity to prevent system deadlock in a dispatch system

Info

Publication number
CA2258888A1
CA2258888A1 CA002258888A CA2258888A CA2258888A1 CA 2258888 A1 CA2258888 A1 CA 2258888A1 CA 002258888 A CA002258888 A CA 002258888A CA 2258888 A CA2258888 A CA 2258888A CA 2258888 A1 CA2258888 A1 CA 2258888A1
Authority
CA
Canada
Prior art keywords
base station
remote unit
deadlock
monitoring link
dispatch
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
CA002258888A
Other languages
French (fr)
Other versions
CA2258888C (en
Inventor
Yu-Dong Yao
Matthew S. Grob
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
Qualcomm Incorporated
Yu-Dong Yao
Matthew S. Grob
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 Qualcomm Incorporated, Yu-Dong Yao, Matthew S. Grob filed Critical Qualcomm Incorporated
Publication of CA2258888A1 publication Critical patent/CA2258888A1/en
Application granted granted Critical
Publication of CA2258888C publication Critical patent/CA2258888C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

Abstract

A method and apparatus to prevent system deadlock in a dispatch system by monitoring link activity is described. The dispatch system is comprised of a set of remote units (10, 20, 22) which communicate with each other by broadcasting one at a time to the group. A
remote unit (10) communicates with the other remote units through at least one base station (44). A communications manager (40) grants a remote unit (10) to be the exclusive system talker upon request through the base station servicing the requesting remote unit (44). The base station (44) monitors a series of data from the remote unit designated as the system talker (10) to detect voice activity. The base station (44) sends a surrogate request to the communications manager (40) to relinquish the system talker privilege if the voice activity falls below a predetermined threshold.
CA002258888A 1996-06-26 1997-06-23 Method and apparatus for monitoring link activity to prevent system deadlock in a dispatch system Expired - Lifetime CA2258888C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/669,778 US5983114A (en) 1996-06-26 1996-06-26 Method and apparatus for monitoring link activity to prevent system deadlock in a dispatch system
US08/669,778 1996-06-26
PCT/US1997/010831 WO1997050266A2 (en) 1996-06-26 1997-06-23 Method and apparatus for monitoring link activity to prevent system deadlock in a dispatch system

Publications (2)

Publication Number Publication Date
CA2258888A1 true CA2258888A1 (en) 1997-12-31
CA2258888C CA2258888C (en) 2008-07-29

Family

ID=24687697

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002258888A Expired - Lifetime CA2258888C (en) 1996-06-26 1997-06-23 Method and apparatus for monitoring link activity to prevent system deadlock in a dispatch system

Country Status (10)

Country Link
US (1) US5983114A (en)
EP (1) EP0908066A2 (en)
JP (3) JP4162714B2 (en)
CN (1) CN100426891C (en)
AU (1) AU3575397A (en)
BR (1) BR9710991B1 (en)
CA (1) CA2258888C (en)
MY (1) MY116907A (en)
TW (1) TW342563B (en)
WO (1) WO1997050266A2 (en)

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US7289822B2 (en) * 2004-06-21 2007-10-30 Qualcomm Incorporated Method for using a signaling channel to set up a call request for a push-to-talk communication on a wireless communication network
US7561896B2 (en) * 2005-07-27 2009-07-14 Samsung Electronics Co., Ltd. Method and system for origination signaling in a wireless network
US7881738B2 (en) * 2006-12-12 2011-02-01 Qualcomm Incorporated Estimation based approach to determine the retransmission timeout value for access probe retransmissions
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US10756860B2 (en) 2018-11-05 2020-08-25 XCOM Labs, Inc. Distributed multiple-input multiple-output downlink configuration
US10432272B1 (en) 2018-11-05 2019-10-01 XCOM Labs, Inc. Variable multiple-input multiple-output downlink user equipment
US11063645B2 (en) 2018-12-18 2021-07-13 XCOM Labs, Inc. Methods of wirelessly communicating with a group of devices
US10756795B2 (en) 2018-12-18 2020-08-25 XCOM Labs, Inc. User equipment with cellular link and peer-to-peer link
US11330649B2 (en) 2019-01-25 2022-05-10 XCOM Labs, Inc. Methods and systems of multi-link peer-to-peer communications
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Also Published As

Publication number Publication date
JP4162714B2 (en) 2008-10-08
CA2258888C (en) 2008-07-29
WO1997050266A3 (en) 1998-02-26
JP2000513525A (en) 2000-10-10
TW342563B (en) 1998-10-11
JP4699552B2 (en) 2011-06-15
US5983114A (en) 1999-11-09
MY116907A (en) 2004-04-30
AU3575397A (en) 1998-01-14
BR9710991B1 (en) 2010-12-14
JP2010068539A (en) 2010-03-25
CN1228904A (en) 1999-09-15
EP0908066A2 (en) 1999-04-14
JP4603059B2 (en) 2010-12-22
BR9710991A (en) 2002-01-15
CN100426891C (en) 2008-10-15
WO1997050266A2 (en) 1997-12-31
JP2008206169A (en) 2008-09-04

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Effective date: 20170623