WO1997050266A3 - 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 Download PDF

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Publication number
WO1997050266A3
WO1997050266A3 PCT/US1997/010831 US9710831W WO9750266A3 WO 1997050266 A3 WO1997050266 A3 WO 1997050266A3 US 9710831 W US9710831 W US 9710831W WO 9750266 A3 WO9750266 A3 WO 9750266A3
Authority
WO
WIPO (PCT)
Prior art keywords
base station
remote unit
deadlock
monitoring link
dispatch
Prior art date
Application number
PCT/US1997/010831
Other languages
French (fr)
Other versions
WO1997050266A2 (en
Inventor
Yu-Dong Yao
Matthew S Grob
Original Assignee
Qualcomm Inc
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 Inc filed Critical Qualcomm Inc
Priority to BRPI9710991-6A priority Critical patent/BR9710991B1/en
Priority to JP50342098A priority patent/JP4162714B2/en
Priority to CA002258888A priority patent/CA2258888C/en
Priority to AU35753/97A priority patent/AU3575397A/en
Priority to EP97932243A priority patent/EP0908066A2/en
Publication of WO1997050266A2 publication Critical patent/WO1997050266A2/en
Publication of WO1997050266A3 publication Critical patent/WO1997050266A3/en

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.
PCT/US1997/010831 1996-06-26 1997-06-23 Method and apparatus for monitoring link activity to prevent system deadlock in a dispatch system WO1997050266A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BRPI9710991-6A BR9710991B1 (en) 1996-06-26 1997-06-23 Method and apparatus for monitoring link activity to prevent system conflict in a dispatch system.
JP50342098A JP4162714B2 (en) 1996-06-26 1997-06-23 Method and apparatus for monitoring link activity to prevent system deadlock in a dispatch system
CA002258888A CA2258888C (en) 1996-06-26 1997-06-23 Method and apparatus for monitoring link activity to prevent system deadlock in a dispatch system
AU35753/97A AU3575397A (en) 1996-06-26 1997-06-23 Method and apparatus for monitoring link activity to prevent system deadlock in a dispatch system
EP97932243A EP0908066A2 (en) 1996-06-26 1997-06-23 Method and apparatus for monitoring link activity to prevent system deadlock in a dispatch system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US669,778 1996-06-26
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

Publications (2)

Publication Number Publication Date
WO1997050266A2 WO1997050266A2 (en) 1997-12-31
WO1997050266A3 true WO1997050266A3 (en) 1998-02-26

Family

ID=24687697

Family Applications (1)

Application Number Title Priority Date Filing Date
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

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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US7058031B2 (en) * 2001-01-31 2006-06-06 Qualcomm Incorporated Method and apparatus for efficient use of communication resources in a data communication system under overload conditions
US7890129B2 (en) 2001-05-15 2011-02-15 Eric Rosen Method and apparatus for delivering information to an idle mobile station in a group communication network
US6963543B2 (en) 2001-06-29 2005-11-08 Qualcomm Incorporated Method and system for group call service
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US7573867B1 (en) * 2003-07-17 2009-08-11 Sprint Spectrum L.P. Method and system for maintaining a radio link connection during absence of real-time packet data communication
US7236749B2 (en) * 2003-10-15 2007-06-26 Honeywell International Inc. Stuck microphone deselection system and method
US7366535B2 (en) * 2004-04-21 2008-04-29 Nokia Corporation Push-to-talk mobile communication terminals
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
US7983705B1 (en) 2008-08-29 2011-07-19 Sprint Communications Company L.P. Push-to-talk communication management system
US11134537B2 (en) 2016-02-18 2021-09-28 Telefonaktiebolaget Lm Ericsson (Publ) Interrupting use of communication resources
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
US10659112B1 (en) 2018-11-05 2020-05-19 XCOM Labs, Inc. User equipment assisted multiple-input multiple-output downlink configuration
US10812216B2 (en) 2018-11-05 2020-10-20 XCOM Labs, Inc. Cooperative multiple-input multiple-output downlink scheduling
US10756795B2 (en) 2018-12-18 2020-08-25 XCOM Labs, Inc. User equipment with cellular link and peer-to-peer link
US11063645B2 (en) 2018-12-18 2021-07-13 XCOM Labs, Inc. Methods of wirelessly communicating with a group of devices
US11330649B2 (en) 2019-01-25 2022-05-10 XCOM Labs, Inc. Methods and systems of multi-link peer-to-peer communications
US10756767B1 (en) 2019-02-05 2020-08-25 XCOM Labs, Inc. User equipment for wirelessly communicating cellular signal with another user equipment

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WO1996000482A2 (en) * 1994-06-27 1996-01-04 Nokia Telecommunications Oy Method for allocating radio channels

Also Published As

Publication number Publication date
WO1997050266A2 (en) 1997-12-31
AU3575397A (en) 1998-01-14
JP2010068539A (en) 2010-03-25
US5983114A (en) 1999-11-09
JP4162714B2 (en) 2008-10-08
JP2008206169A (en) 2008-09-04
CA2258888C (en) 2008-07-29
BR9710991B1 (en) 2010-12-14
BR9710991A (en) 2002-01-15
CN100426891C (en) 2008-10-15
CN1228904A (en) 1999-09-15
EP0908066A2 (en) 1999-04-14
CA2258888A1 (en) 1997-12-31
JP2000513525A (en) 2000-10-10
JP4603059B2 (en) 2010-12-22
JP4699552B2 (en) 2011-06-15
TW342563B (en) 1998-10-11
MY116907A (en) 2004-04-30

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