GB2236606B - Communications system with contention protocol - Google Patents

Communications system with contention protocol

Info

Publication number
GB2236606B
GB2236606B GB8914570A GB8914570A GB2236606B GB 2236606 B GB2236606 B GB 2236606B GB 8914570 A GB8914570 A GB 8914570A GB 8914570 A GB8914570 A GB 8914570A GB 2236606 B GB2236606 B GB 2236606B
Authority
GB
United Kingdom
Prior art keywords
time
channel
periods
communications system
remote units
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.)
Expired - Fee Related
Application number
GB8914570A
Other versions
GB2236606A (en
GB8914570D0 (en
Inventor
Moshe Mishory
Yitzhak Cohen
Salomon Serfaty
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.)
Motorola Solutions Israel Ltd
Original Assignee
Motorola Israel Ltd
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 Israel Ltd filed Critical Motorola Israel Ltd
Priority to GB8914570A priority Critical patent/GB2236606B/en
Publication of GB8914570D0 publication Critical patent/GB8914570D0/en
Priority to CA 2019698 priority patent/CA2019698A1/en
Priority to AU57765/90A priority patent/AU5776590A/en
Publication of GB2236606A publication Critical patent/GB2236606A/en
Application granted granted Critical
Publication of GB2236606B publication Critical patent/GB2236606B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
    • G08C15/06—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/02—Hybrid access techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2209/00—Arrangements in telecontrol or telemetry systems
    • H04Q2209/10—Arrangements in telecontrol or telemetry systems using a centralized architecture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2209/00—Arrangements in telecontrol or telemetry systems
    • H04Q2209/70—Arrangements in the main station, i.e. central controller
    • H04Q2209/75—Arrangements in the main station, i.e. central controller by polling or interrogating the sub-stations

Abstract

A communications system for data acquisition and control is provided, communicating on a time-division multiple- access communications channel, such as a radio channel. Time on the channel is divided between first periods (contention time) during which a central station 10 receives signals from remote stations 11 and second periods (polling time) when signals are transmitted to the remote units to grant access to the channel. Means are provided for transmitting a signal to the remote units to inform the remote units of a change in the length of at least the first periods of time in response to traffic measuring means. <IMAGE>
GB8914570A 1989-06-24 1989-06-24 Communications system with contention protocol Expired - Fee Related GB2236606B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8914570A GB2236606B (en) 1989-06-24 1989-06-24 Communications system with contention protocol
CA 2019698 CA2019698A1 (en) 1989-06-24 1990-06-22 Communications system with contention protocol
AU57765/90A AU5776590A (en) 1989-06-24 1990-06-22 Communications system with contention protocol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8914570A GB2236606B (en) 1989-06-24 1989-06-24 Communications system with contention protocol

Publications (3)

Publication Number Publication Date
GB8914570D0 GB8914570D0 (en) 1989-08-16
GB2236606A GB2236606A (en) 1991-04-10
GB2236606B true GB2236606B (en) 1993-03-31

Family

ID=10659030

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8914570A Expired - Fee Related GB2236606B (en) 1989-06-24 1989-06-24 Communications system with contention protocol

Country Status (3)

Country Link
AU (1) AU5776590A (en)
CA (1) CA2019698A1 (en)
GB (1) GB2236606B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2738340B2 (en) * 1995-05-11 1998-04-08 日本電気株式会社 Multi-access communication method
FI105250B (en) 1998-09-01 2000-06-30 Nokia Networks Oy A method for controlling the load on a telecommunications system
DE10140849B4 (en) 2001-08-21 2011-05-05 Robert Bosch Gmbh Electronic system with a multiple access protocol and method for multiple access
GB2394144B (en) 2002-10-10 2005-01-26 Motorola Inc Regulation of time intervals in a wireless communication system
US7907628B2 (en) 2003-11-19 2011-03-15 Honeywell International Inc. Priority based arbitration for TDMA schedule enforcement in a multi-channel system
EP1741243A2 (en) * 2003-11-19 2007-01-10 Honeywell International Inc. Asynchronous hub
US7668204B2 (en) 2003-11-19 2010-02-23 Honeywell International Inc. Port driven authentication in a network
US7873739B2 (en) 2003-11-19 2011-01-18 Honeywell International Inc. Voting mechanism for transmission schedule enforcement
US7373279B2 (en) * 2004-08-19 2008-05-13 Murata Manufacturing Co., Ltd. Network
JP4579742B2 (en) 2005-03-30 2010-11-10 キヤノン株式会社 Wireless terminal device, wireless communication method, and computer program
GB2424799A (en) * 2005-04-01 2006-10-04 Motorola Inc Dynamic allocation of random access time slots in a mobile communication system
GB2440194B (en) * 2006-07-20 2008-07-30 Toshiba Res Europ Ltd A Wireless Communication System
GB2449232B (en) * 2007-05-01 2009-09-02 Thales Holdings Uk Plc Wireless communications apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165127A (en) * 1984-09-26 1986-04-03 Philips Electronic Associated Multiple access communications system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165127A (en) * 1984-09-26 1986-04-03 Philips Electronic Associated Multiple access communications system

Also Published As

Publication number Publication date
AU5776590A (en) 1991-01-03
GB2236606A (en) 1991-04-10
GB8914570D0 (en) 1989-08-16
CA2019698A1 (en) 1990-12-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070624