WO1998057449A2 - Etablissement d'une liaison sans fil entre un terminal central et un terminal d'abonne dans un systeme de telecommunication sans fil - Google Patents

Etablissement d'une liaison sans fil entre un terminal central et un terminal d'abonne dans un systeme de telecommunication sans fil Download PDF

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Publication number
WO1998057449A2
WO1998057449A2 PCT/GB1998/001678 GB9801678W WO9857449A2 WO 1998057449 A2 WO1998057449 A2 WO 1998057449A2 GB 9801678 W GB9801678 W GB 9801678W WO 9857449 A2 WO9857449 A2 WO 9857449A2
Authority
WO
WIPO (PCT)
Prior art keywords
radio
subscriber terminal
radio port
manager
slave
Prior art date
Application number
PCT/GB1998/001678
Other languages
English (en)
Other versions
WO1998057449A3 (fr
Inventor
J. Thompson
Richard Mortimer Lamkin
Original Assignee
Airspan Communications Corporation
Airspan Communications Limited
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 Airspan Communications Corporation, Airspan Communications Limited filed Critical Airspan Communications Corporation
Priority to AU77831/98A priority Critical patent/AU7783198A/en
Publication of WO1998057449A2 publication Critical patent/WO1998057449A2/fr
Publication of WO1998057449A3 publication Critical patent/WO1998057449A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/14—WLL [Wireless Local Loop]; RLL [Radio Local Loop]

Definitions

  • radio port manager associated with each radio slot and, for an incoming call, the radio manager is arranged to inform the specific radio port manager associated with the radio slot that has been selected for the incoming call, so that that radio port manager can then configure the central terminal so that it is in a position to receive the acquisition request message.
  • the wireless telecommunications system further comprises a call control channel provided within each frequency channel arranged to support wireless links between the central terminal and the subscriber terminal, a radio port manager being associated with the call control channel, and the invitation message being transmitted to the radio port slave by that radio port manager over the call control channel.
  • the subscriber terminal can be provided with a list identifying all of the currently available radio slots that may be used for an outgoing call.
  • the present invention provides a radio port manager for establishing a wireless link between a central terminal and a subscriber terminal of a wireless telecommunications system, the radio port manager being configured to be operable to configure the central terminal to receive an acquisition request message from a subscriber terminal on a radio slot associated with the radio port manager, and, upon receipt of the acquisition request message, to grant the subscriber terminal access to the radio slot, the acquisition request message being generated by a radio port slave within the subscriber terminal upon receipt of an invitation message inviting the subscriber terminal to acquire the wireless link on said radio slot.
  • FIG. 1 is a schematic overview of an example of a wireless telecommunications system.
  • the telecommunications system includes one or more service areas 12, 14 and 16, each of which is served by a respective central terminal (CT) 10 which establishes a radio link with subscriber terminals (ST) 20 within the area concerned.
  • CT central terminal
  • ST subscriber terminals
  • the area which is covered by a central terminal 10 can vary. For example, in a rural area with a low density of subscribers, a service area 12 could cover an area with a radius of 15-20Km.
  • an access concentrator 100 which transmits signals tc. and receives signals from, the central terminal using concentrated interfaces, but maintains an unconcentrated interface to the switch, protocol conversion and mapping functions being employed within the access concentrator 100 to convert signals from a concentrated format to an unconcentrated format, and vice versa.
  • the radio manager 130 When the radio manager 130 contacts each radio slave 140 to determine whether that radio slave can provide a radio slot for the call, the radio manager also indicates the bandwidth required for the call. Hence, depending on the bandwidth required, the radio slave may need to determine whether it can provide more than one radio slot for use in carrying that call, in such cases these plural radio slots preferably being radio slots from within the same orthogonal channel, and being contiguous with one another. In preferred embodiments, the radio manager determines the bandwidth required based on information about the ST addressed by the call. Hence, if the ST is able to support a bandwidth of 160kbit/s, then even if the current call does not require that bandwidth, the radio manager 130 still requests a radio slave to allocate that bandwidth. By doing this, a subsequent call directed to the same ST can readily be allocated bandwidth whilst the present call is still in progress.
  • the radio port manager object 210 is initially in an "IDLE” state until it receives the "Allocated" function call from the appropriate radio slave 140.
  • This function call informs the radio port manager 200 that a particular subscriber terminal is to acquire its radio slot, and causes the radio port manager to set up the central terminal's wireless communications interface to receive an acquisition request message from that subscriber terminal.

Landscapes

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

Abstract

Cette invention concerne un système de télécommunication sans fil comprenant un méchanisme d'interface qui établit une liaison sans fil entre un terminal central et un terminal d'abonné appartenant audit système de communication sans fil. Le méchanisme d'interface comprend un gestionnaire du port de bande radio situé dans le terminal central et le configurant pour qu'il reçoive un message de demande d'acquisition provenant d'un terminal d'abonné sur une bande radio associée au gestionnaire de port de bande radio, et un port asservi de bande radio situé dans le terminal d'abonné prévu pour recevoir un message d'invitation, invitant le terminal d'abonné à acquérir la liaison sans fil sur ladite bande radio, et pour envoyer le message de demande d'acquisition audit gestionnaire de port de bande radio. Le gestionnaire de port de bande radio réagit à la réception du message de demande d'acquisition pour attribuer l'accès du terminal d'abonné à la bande radio. On a remarqué que cette technique constituait une manière particulièrement efficace de gérer l'établissement de liaison sans fil entre un terminal central et un terminal d'abonné d'un système de télécommunication sans fil, dans des situations dans lesquelles la bande radio utilisée pour la liaison sans fil pouvait varier d'un appel à l'autre.
PCT/GB1998/001678 1997-06-11 1998-06-09 Etablissement d'une liaison sans fil entre un terminal central et un terminal d'abonne dans un systeme de telecommunication sans fil WO1998057449A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU77831/98A AU7783198A (en) 1997-06-11 1998-06-09 Establishing a wireless link between a central terminal and a subscriber terminal of a wireless telecommunications system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71216897A 1997-06-11 1997-06-11
US9712168.5 1997-06-11

Publications (2)

Publication Number Publication Date
WO1998057449A2 true WO1998057449A2 (fr) 1998-12-17
WO1998057449A3 WO1998057449A3 (fr) 1999-03-11

Family

ID=24861021

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/001678 WO1998057449A2 (fr) 1997-06-11 1998-06-09 Etablissement d'une liaison sans fil entre un terminal central et un terminal d'abonne dans un systeme de telecommunication sans fil

Country Status (2)

Country Link
AU (1) AU7783198A (fr)
WO (1) WO1998057449A2 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2174571A (en) * 1985-03-20 1986-11-05 Int Mobile Machines Digital wireless telephone system
WO1995026094A1 (fr) * 1994-03-21 1995-09-28 Omnipoint Corporation Protocole hertzien de communications par telephone de poche ou a systeme micro-cellulaire
WO1996016503A1 (fr) * 1994-11-23 1996-05-30 Hughes Electronics Systeme personnel de telecommunications sans fils

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2174571A (en) * 1985-03-20 1986-11-05 Int Mobile Machines Digital wireless telephone system
WO1995026094A1 (fr) * 1994-03-21 1995-09-28 Omnipoint Corporation Protocole hertzien de communications par telephone de poche ou a systeme micro-cellulaire
WO1996016503A1 (fr) * 1994-11-23 1996-05-30 Hughes Electronics Systeme personnel de telecommunications sans fils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KATRUFF M: "ISDN.... ON RADIO IN THE LOCAL LOOP NEAR YOU" TELCOM REPORT INTERNATIONAL, vol. 19, no. 5, 1996, pages 34-37, XP000198331 *

Also Published As

Publication number Publication date
AU7783198A (en) 1998-12-30
WO1998057449A3 (fr) 1999-03-11

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