BRPI0608104A2 - método e sistema para prevenção de colisão em comunicações sem fio - Google Patents

método e sistema para prevenção de colisão em comunicações sem fio

Info

Publication number
BRPI0608104A2
BRPI0608104A2 BRPI0608104-5A BRPI0608104A BRPI0608104A2 BR PI0608104 A2 BRPI0608104 A2 BR PI0608104A2 BR PI0608104 A BRPI0608104 A BR PI0608104A BR PI0608104 A2 BRPI0608104 A2 BR PI0608104A2
Authority
BR
Brazil
Prior art keywords
receiving
units
mobile
transmission
collision prevention
Prior art date
Application number
BRPI0608104-5A
Other languages
English (en)
Inventor
Bruce E Geren
Bobby D Anderson
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of BRPI0608104A2 publication Critical patent/BRPI0608104A2/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance

Landscapes

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

Abstract

MéTODO E SISTEMA PARA PREVENçãO DE COLISãO EM COMUNICAçõES SEM FIO. A invenção refere-se a um método (300) e a uma unidade móvel (110) para reduzir colisões de transmissão, O método pode incluir - em um ambiente de chamada sem sistema - receber (314) em diversas unidades móveis de recepção (110B, 110C) uma chamada proveniente de uma unidade móvel de transmissão original (110A) e nas diversas unidades móveis de recepção, atrasar seletivamente de modo aleatório (316) transmissões provenientes das unidades de recepção para reduzir a probabilidade de que tais transmissões colidam entre si. Atrasar seletivamente de modo aleatório uma transmissão na etapa de unidades de recepção pode incluir realizar (318) um rastreamento de pré-transmissão quando um elemento de transmissão (112) de uma das unidades móveis de recepção for ativado ou por atribuição (330) de um atraso aleatório a um modo inativo (400) a seguir a uma sessão de recepção nas unidades móveis de recepção.
BRPI0608104-5A 2005-04-21 2006-04-03 método e sistema para prevenção de colisão em comunicações sem fio BRPI0608104A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/111,417 US20060251107A1 (en) 2005-04-21 2005-04-21 Method and system for collision avoidance in wireless communications
PCT/US2006/012162 WO2006115701A1 (en) 2005-04-21 2006-04-03 Method and system for collision avoidance in wireless communications

Publications (1)

Publication Number Publication Date
BRPI0608104A2 true BRPI0608104A2 (pt) 2009-11-03

Family

ID=37215044

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0608104-5A BRPI0608104A2 (pt) 2005-04-21 2006-04-03 método e sistema para prevenção de colisão em comunicações sem fio

Country Status (4)

Country Link
US (1) US20060251107A1 (pt)
CN (1) CN101164263A (pt)
BR (1) BRPI0608104A2 (pt)
WO (1) WO2006115701A1 (pt)

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US6396819B1 (en) 1998-03-21 2002-05-28 Richard D. Fleeter Low-cost satellite communication system
US7227884B2 (en) 2000-02-28 2007-06-05 Aeroastro, Inc. Spread-spectrum receiver with progressive fourier transform
WO2007136415A2 (en) 2005-12-30 2007-11-29 Comtech Mobile Datacom Corporation Mobile satellite communications
US8275080B2 (en) * 2006-11-17 2012-09-25 Comtech Mobile Datacom Corporation Self-supporting simplex packets
JP2008177900A (ja) * 2007-01-19 2008-07-31 Fujitsu Ltd データ通信装置、設定情報更新方法および設定情報更新プログラム
US8429406B2 (en) * 2007-06-04 2013-04-23 Qualcomm Atheros, Inc. Authorizing customer premise equipment into a network
US9326135B2 (en) * 2008-02-21 2016-04-26 Google Technology Holdings LLC Method and apparatus for secure communication in a digital two way radio protocol
US8284749B2 (en) 2008-03-10 2012-10-09 Comtech Mobile Datacom Corporation Time slot synchronized, flexible bandwidth communication system
US8548107B1 (en) 2009-01-26 2013-10-01 Comtech Mobile Datacom Corporation Advanced multi-user detector
US9106364B1 (en) 2009-01-26 2015-08-11 Comtech Mobile Datacom Corporation Signal processing of a high capacity waveform
US8675711B1 (en) 2009-09-25 2014-03-18 Comtech Mobile Datacom Corporation System and methods for dynamic spread spectrum usage
JP2011155336A (ja) * 2010-01-26 2011-08-11 Sharp Corp 通信システム及び移動局装置及び基地局装置及び処理方法
JP5732753B2 (ja) * 2010-06-23 2015-06-10 ソニー株式会社 無線通信装置、無線通信システムおよび無線通信方法
EP2589253B1 (fr) * 2010-06-29 2015-04-01 Orange Procede de communication
US8885558B2 (en) 2011-09-28 2014-11-11 Robert Bosch Gmbh System and method for multiple access sensor networks
US9215689B2 (en) * 2013-03-11 2015-12-15 Motorola Solutions, Inc. Method and apparatus for resolving call collisions in a digital conventional direct mode

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US682772A (en) * 1901-03-02 1901-09-17 John Weltlin Combined hose strap and hook.
US5471503A (en) * 1992-12-29 1995-11-28 Apple Computer, Inc. Scanning method for receiving a transmission in a communication system with slow frequency hopping and coding
GB9312836D0 (en) * 1993-06-22 1993-08-04 Schlumberger Ind Ltd Multipoint to point radiocommunications network
FI941333A (fi) * 1994-03-22 1995-09-23 Nokia Telecommunications Oy Menetelmä lähetysvuorojen jakamiseksi radioyksiköiden välillä ja radioyksikkö
US5943322A (en) * 1996-04-24 1999-08-24 Itt Defense, Inc. Communications method for a code division multiple access system without a base station
EP0833479B1 (en) * 1996-09-27 2005-03-16 Hewlett-Packard Company, A Delaware Corporation Contention resolution process for data networks
US6674765B1 (en) * 1998-05-22 2004-01-06 Lucent Technologies Inc. Methods and apparatus for random chip delay access priority in a communications system
JP3165125B2 (ja) * 1998-12-24 2001-05-14 日本電気株式会社 無線通信における多重アクセス方法
US7366532B2 (en) * 2003-10-09 2008-04-29 Motorola, Inc. Group call management through receive/transmit synchronization
US7280807B2 (en) * 2004-01-14 2007-10-09 Samuel Eak Hua Nguy Initiator device capable of two-way half-duplex communication with multiple recipient devices

Also Published As

Publication number Publication date
CN101164263A (zh) 2008-04-16
WO2006115701A1 (en) 2006-11-02
US20060251107A1 (en) 2006-11-09

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 6A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2161 DE 05/06/2012.