WO1998018225A3 - A real-time csma method having the capability to adaptively vary cell sizes and a wireless network for implementing the same - Google Patents

A real-time csma method having the capability to adaptively vary cell sizes and a wireless network for implementing the same Download PDF

Info

Publication number
WO1998018225A3
WO1998018225A3 PCT/IB1997/001268 IB9701268W WO9818225A3 WO 1998018225 A3 WO1998018225 A3 WO 1998018225A3 IB 9701268 W IB9701268 W IB 9701268W WO 9818225 A3 WO9818225 A3 WO 9818225A3
Authority
WO
WIPO (PCT)
Prior art keywords
wireless network
network
capability
implementing
real
Prior art date
Application number
PCT/IB1997/001268
Other languages
French (fr)
Other versions
WO1998018225A2 (en
Inventor
George Melnick
Original Assignee
Philips Electronics Nv
Philips Norden Ab
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 Philips Electronics Nv, Philips Norden Ab filed Critical Philips Electronics Nv
Priority to EP97942158A priority Critical patent/EP0867082B1/en
Priority to AU43945/97A priority patent/AU736401B2/en
Priority to DE69737494T priority patent/DE69737494T2/en
Priority to JP51915698A priority patent/JP4004546B2/en
Publication of WO1998018225A2 publication Critical patent/WO1998018225A2/en
Publication of WO1998018225A3 publication Critical patent/WO1998018225A3/en

Links

Classifications

    • 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

Abstract

A method in which incoming RF signals to a given node of a wireless network are detected in real-time by using a comparison circuit for comparing a signal which is indicative of the strength of an incoming RF signal with a prescribed threshold level. The output of the comparison circuit is coupled to an input of the digital signal processor (e.g., microprocessor) of the node. The microprocessor is preferably programmed to check this input prior to attempting to transmit data, thus minimizing the chances of a collision occurring due to overlapping data transmitting and receiving operations. Preferably, the prescribed threshold level utilized in the comparison circuit of a given node can be selectively varied in order to thereby selectively vary the size of the cell in which the given node resides. In this connection, the neighbourhood or cell sizes in which the individual nodes in the network reside are preferably adaptively varied in such a manner as to maximize the data throughput of the entire network. Also disclosed is an individual network node for a wireless network and a wireless network which have the capability of implementing the above-described method.
PCT/IB1997/001268 1996-10-17 1997-10-13 A real-time csma method having the capability to adaptively vary cell sizes and a wireless network for implementing the same WO1998018225A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP97942158A EP0867082B1 (en) 1996-10-17 1997-10-13 A real-time csma method having the capability to adaptively vary cell sizes and a wireless network for implementing the same
AU43945/97A AU736401B2 (en) 1996-10-17 1997-10-13 A real-time CSMA method having the capability to adaptively vary cell sizes and a wireless network for implementing the same
DE69737494T DE69737494T2 (en) 1996-10-17 1997-10-13 REAL-TIME CSMA PROCEDURE WHICH HAS THE ABILITY TO ADAPTIVELY CHANGE CELL SIZE AND WIRELESS NETWORK TO PERFORM THE PROCESS
JP51915698A JP4004546B2 (en) 1996-10-17 1997-10-13 Real-time CSMA method capable of adaptively changing cell size and radio network implementing the method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/733,306 1996-10-17
US08/733,306 US5946631A (en) 1996-10-17 1996-10-17 Real-time CSMA method having the capability to adaptively vary cell sizes and a wireless network for implementing the same

Publications (2)

Publication Number Publication Date
WO1998018225A2 WO1998018225A2 (en) 1998-04-30
WO1998018225A3 true WO1998018225A3 (en) 1998-08-13

Family

ID=24947070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1997/001268 WO1998018225A2 (en) 1996-10-17 1997-10-13 A real-time csma method having the capability to adaptively vary cell sizes and a wireless network for implementing the same

Country Status (7)

Country Link
US (2) US5946631A (en)
EP (1) EP0867082B1 (en)
JP (1) JP4004546B2 (en)
CN (1) CN1179506C (en)
AU (1) AU736401B2 (en)
DE (1) DE69737494T2 (en)
WO (1) WO1998018225A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9115908B2 (en) 2011-07-27 2015-08-25 Honeywell International Inc. Systems and methods for managing a programmable thermostat

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8982856B2 (en) 1996-12-06 2015-03-17 Ipco, Llc Systems and methods for facilitating wireless network communication, satellite-based wireless network systems, and aircraft-based wireless network systems, and related methods
US7054271B2 (en) 1996-12-06 2006-05-30 Ipco, Llc Wireless network system and method for providing same
US8410931B2 (en) 1998-06-22 2013-04-02 Sipco, Llc Mobile inventory unit monitoring systems and methods
US6437692B1 (en) 1998-06-22 2002-08-20 Statsignal Systems, Inc. System and method for monitoring and controlling remote devices
US6891838B1 (en) 1998-06-22 2005-05-10 Statsignal Ipc, Llc System and method for monitoring and controlling residential devices
US6914893B2 (en) 1998-06-22 2005-07-05 Statsignal Ipc, Llc System and method for monitoring and controlling remote devices
US7650425B2 (en) 1999-03-18 2010-01-19 Sipco, Llc System and method for controlling communication between a host computer and communication devices associated with remote devices in an automated monitoring system
US6727816B1 (en) * 1999-05-13 2004-04-27 Honeywell International Inc. Wireless system with variable learned-in transmit power
KR100899211B1 (en) 2000-02-23 2009-05-27 아이피알 라이센싱, 인코포레이티드 Reverse link initial power setting
EP1139606A1 (en) * 2000-03-28 2001-10-04 Lucent Technologies Inc. Wireless communication in a lan with varying signal level thresholds
US8363744B2 (en) 2001-06-10 2013-01-29 Aloft Media, Llc Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks
US7171216B1 (en) 2001-04-19 2007-01-30 Cisco Technology, Inc. Method and system for detecting a preferred wireless network for a mobile device
US7480501B2 (en) 2001-10-24 2009-01-20 Statsignal Ipc, Llc System and method for transmitting an emergency message over an integrated wireless network
US8489063B2 (en) 2001-10-24 2013-07-16 Sipco, Llc Systems and methods for providing emergency messages to a mobile device
US7424527B2 (en) 2001-10-30 2008-09-09 Sipco, Llc System and method for transmitting pollution information over an integrated wireless network
US20030087607A1 (en) * 2001-11-05 2003-05-08 General Motors Corporation Method for wireless modem carrier level control
US6925069B2 (en) * 2002-04-19 2005-08-02 Meshnetworks, Inc. Data network having a wireless local area network with a packet hopping wireless backbone
US7163263B1 (en) 2002-07-25 2007-01-16 Herman Miller, Inc. Office components, seating structures, methods of using seating structures, and systems of seating structures
KR20040020638A (en) * 2002-08-31 2004-03-09 삼성전자주식회사 Dynamic management method of packet segmentation threshold according to the wireless channel status.
US7248877B2 (en) * 2002-11-21 2007-07-24 Bandspeed, Inc. Multiple access wireless communications architecture
US7512404B2 (en) 2002-11-21 2009-03-31 Bandspeed, Inc. Method and apparatus for sector channelization and polarization for reduced interference in wireless networks
US6873937B2 (en) * 2003-03-31 2005-03-29 Sony Corporation Link strength predictions based on spatiotemporal correlation of features in proximal links
US7046166B2 (en) * 2003-04-29 2006-05-16 Rockwell Scientific Licensing, Llc Modular wireless integrated network sensor (WINS) node with a dual bus architecture
US7027827B2 (en) * 2003-05-19 2006-04-11 Motorola, Inc. Method and apparatus for channel sharing between multiple communication systems
US20050079831A1 (en) * 2003-10-09 2005-04-14 International Business Machines Corporation Signal strength indicator for a wireless card
US8031650B2 (en) 2004-03-03 2011-10-04 Sipco, Llc System and method for monitoring remote devices with a dual-mode wireless communication protocol
US7756086B2 (en) 2004-03-03 2010-07-13 Sipco, Llc Method for communicating in dual-modes
JP4311234B2 (en) * 2004-03-08 2009-08-12 沖電気工業株式会社 Communication timing control device, communication timing control method, node, and communication system
US7529218B2 (en) * 2004-08-25 2009-05-05 Cisco Technology, Inc. High density WLAN system
US20060046739A1 (en) * 2004-08-25 2006-03-02 Cisco Technology, Inc. Method and apparatus for improving performance in wireless networks by tuning receiver sensitivity thresholds
WO2006081206A1 (en) 2005-01-25 2006-08-03 Sipco, Llc Wireless network protocol systems and methods
US7801546B2 (en) * 2005-09-26 2010-09-21 Cisco Technology, Inc. Distributing configuration parameters in a high density network
US7907919B2 (en) * 2006-02-24 2011-03-15 Sony Corporation Predicting future changes to strengths of paths in MIMO systems
DE602007013878D1 (en) * 2006-03-16 2011-05-26 British Telecomm METHOD FOR WIRELESS TRANSMISSION WITH RELAY
CN101512993A (en) * 2006-09-08 2009-08-19 皇家飞利浦电子股份有限公司 Method of selecting nodes
US8577711B2 (en) 2008-01-25 2013-11-05 Herman Miller, Inc. Occupancy analysis
US9157764B2 (en) 2011-07-27 2015-10-13 Honeywell International Inc. Devices, methods, and systems for occupancy detection
US9621371B2 (en) 2012-07-24 2017-04-11 Honeywell International Inc. Wireless sensor device with wireless remote programming

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149947A (en) * 1983-11-16 1985-06-19 Systech Limited Control systems
EP0475682A2 (en) * 1990-09-06 1992-03-18 NCR International, Inc. Local area network having a wireless transmission link
US5193209A (en) * 1989-04-27 1993-03-09 Nec Corporation Mobile telephone system for producing busyness information for speech channels
US5295154A (en) * 1991-10-01 1994-03-15 Norand Corporation Radio frequency local area network

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144411A (en) * 1976-09-22 1979-03-13 Bell Telephone Laboratories, Incorporated Cellular radiotelephone system structured for flexible use of different cell sizes
US4935927A (en) * 1987-11-20 1990-06-19 International Mobile Machines Corporation Base station emulator
JPH03285432A (en) * 1990-03-15 1991-12-16 Nec Corp Radio transmitter-receiver
US5319641A (en) * 1990-12-03 1994-06-07 Echelon Systems Corp. Multiaccess carrier sensing network communication protocol with priority messages
US5276907A (en) * 1991-01-07 1994-01-04 Motorola Inc. Method and apparatus for dynamic distribution of a communication channel load in a cellular radio communication system
US5428821A (en) * 1991-06-28 1995-06-27 Motorola, Inc. Base site with remote calibration capability
EP0632619B1 (en) * 1993-06-30 2000-10-18 Cabletron Systems, Inc. Collision reduction method for ethernet network
GB2280570B (en) * 1993-07-31 1998-04-01 Motorola Ltd A communications system
US5742239A (en) * 1993-08-24 1998-04-21 Mti Technology Corporation Background arbitration monitoring to improve access on lightly consumed network
US5465398A (en) * 1993-10-07 1995-11-07 Metricom, Inc. Automatic power level control of a packet communication link
FI98772C (en) * 1994-02-28 1997-08-11 Nokia Telecommunications Oy Procedure for route switching on a packet data connection
US5475870A (en) * 1994-09-12 1995-12-12 Qualcomm Incorporated Apparatus and method for adding and removing a base station from a cellular communications system
US5600651A (en) * 1995-04-07 1997-02-04 Molle; Mart L. Binary logarithmic arbitration method for carrier sense multiple access with collision detection network medium access control protocols
US6327245B1 (en) * 1995-06-30 2001-12-04 Philips Electronics North America Corporation Automatic channel switching for jamming avoidance in burst-mode packet data wireless communication networks
US6132306A (en) * 1995-09-06 2000-10-17 Cisco Systems, Inc. Cellular communication system with dedicated repeater channels
US5721733A (en) * 1995-10-13 1998-02-24 General Wireless Communications, Inc. Wireless network access scheme

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149947A (en) * 1983-11-16 1985-06-19 Systech Limited Control systems
US5193209A (en) * 1989-04-27 1993-03-09 Nec Corporation Mobile telephone system for producing busyness information for speech channels
EP0475682A2 (en) * 1990-09-06 1992-03-18 NCR International, Inc. Local area network having a wireless transmission link
US5295154A (en) * 1991-10-01 1994-03-15 Norand Corporation Radio frequency local area network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9115908B2 (en) 2011-07-27 2015-08-25 Honeywell International Inc. Systems and methods for managing a programmable thermostat

Also Published As

Publication number Publication date
EP0867082B1 (en) 2007-03-21
CN1179506C (en) 2004-12-08
JP2002515208A (en) 2002-05-21
EP0867082A2 (en) 1998-09-30
JP4004546B2 (en) 2007-11-07
AU4394597A (en) 1998-05-15
US6496696B1 (en) 2002-12-17
EP0867082A3 (en) 1998-10-21
CN1210639A (en) 1999-03-10
US5946631A (en) 1999-08-31
WO1998018225A2 (en) 1998-04-30
DE69737494D1 (en) 2007-05-03
AU736401B2 (en) 2001-07-26
DE69737494T2 (en) 2007-11-29

Similar Documents

Publication Publication Date Title
WO1998018225A3 (en) A real-time csma method having the capability to adaptively vary cell sizes and a wireless network for implementing the same
CA2212799A1 (en) Reliable atm microwave link and network
US6426819B1 (en) Method and apparatus for cordless infrared communication
EP2246994A3 (en) System and method for detection and selection of multiple antenna
CA2199902A1 (en) Interface circuit and method for transmitting binary logic signals with reduced power dissipation
CA1311802C (en) Diversity antenna communication system
CA1246148A (en) Radio system wherein transmission power is varied according to transmission quality
CA2209215A1 (en) Transmission rate judging unit
EP0108938A1 (en) Digital paging system having bit rate switching means and digital paging receiver therefor
WO1999010985A3 (en) Method and apparatus for processing power control signals in a mobile telephone system
WO2002019743A3 (en) Mitigating interference between wireless systems
WO2000041402A3 (en) A signal collection system
CA2398932A1 (en) Radio communication system, communication terminal, and method for transmitting burst signals
HK1019022A1 (en) Adaptive sectorization in a spread spectrum communication system
CA2246866A1 (en) Wireless local area network with enhanced carrier sense provision
AU2827400A (en) Transmitter, receiver, transmitter/receiver system, transmission method and reception method
WO2004114569A3 (en) Optimizing link throughput associated with non-congestion loss
WO2000010307A3 (en) Adaptive rate network communication system and method
EP0923207A3 (en) Reception synchronization circuit, receiver using the same, and digital communication system
CA2195489A1 (en) Introducing processing delay as a multiple of the time slot duration
CN1132967A (en) Control apparatus and control method for attenuating radio signal
US7212790B2 (en) Communication apparatus in radio network, transmission control method, threshold value control method, and radio network system
CA2009161A1 (en) Earth station capable of carrying out communication without a control station
WO2005094247A3 (en) Method of transmitting and receiving serial digital signals in a wireless network utilizing a baseband processor
EP0833478A3 (en) Pattern matching apparatus

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 97192093.1

Country of ref document: CN

AK Designated states

Kind code of ref document: A2

Designated state(s): AU CN JP

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

WWE Wipo information: entry into national phase

Ref document number: 1997942158

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 1998 519156

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWP Wipo information: published in national office

Ref document number: 1997942158

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1997942158

Country of ref document: EP