WO2001091481A1 - Commande d'architectures cellulaires radio a base integres a des unites de transcodage et d'adaptation de debit - Google Patents

Commande d'architectures cellulaires radio a base integres a des unites de transcodage et d'adaptation de debit Download PDF

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Publication number
WO2001091481A1
WO2001091481A1 PCT/US2000/014383 US0014383W WO0191481A1 WO 2001091481 A1 WO2001091481 A1 WO 2001091481A1 US 0014383 W US0014383 W US 0014383W WO 0191481 A1 WO0191481 A1 WO 0191481A1
Authority
WO
WIPO (PCT)
Prior art keywords
wireless communication
mobile stations
providing wireless
base transceiver
mobile
Prior art date
Application number
PCT/US2000/014383
Other languages
English (en)
Inventor
David Owens
Original Assignee
Airnet Communications Corporation
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 Airnet Communications Corporation filed Critical Airnet Communications Corporation
Priority to PCT/US2000/014383 priority Critical patent/WO2001091481A1/fr
Priority to AU2000252889A priority patent/AU2000252889A1/en
Publication of WO2001091481A1 publication Critical patent/WO2001091481A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/181—Transcoding devices; Rate adaptation devices

Definitions

  • the present invention relates generally to wireless telecommunication
  • the present invention relates to improved method
  • BSS Base Station Subsystem
  • BTS Base Transceiver System
  • BTS Base Transceiver System
  • NSS Network and Switching Subsystem
  • GSM Global System for Mobile Communications
  • GSM variants exist-GSM-900, GSM-1 800 (formerly DCS-1 800), and GSM 1 900
  • ETSI ETSI Institute
  • a GSM Network 1 0 comprises three
  • BSS Base Station Subsystem
  • Network a Network
  • NSS Network Management Subsystem
  • the BSS 20 is responsible for maintaining transmission
  • the NSS is responsible for managing landline
  • the GSM network 1 0 communicates with multiple
  • MS Mobile Stations 50 through the BSS 20, and the NSS 30 communicates with
  • the landline network 60 is typically a Public Switched
  • PSTN PSTN
  • ISDN Integrated Digital Service Network
  • PLMN Public Land Mobile Network
  • PSDN Public Switched Network
  • Fig. 2 illlustrates the GSM NSS 30 of Fig. 1 along with a more detailed view
  • BTS 1 00a is connected in series to BTS 1 00a l 7 while BTS 1 00b is shown
  • Fig, 2 is intended only to illustrate the flexibility of the design of a GSM Network BSS, and is not intended to imply control of a BTS by any other BTS.
  • Each BTS 1 00a...1 00n is controlled by the Base Station Controller (BSC) 1 10,
  • MS Mobile Station
  • BSC 1 1 0 manages handoff processing and signal processing resource allocation
  • the BSC 1 1 0 includes a switching matrix 1 35 and
  • a central processing unit 1 50 including software which performs tasks such as call
  • the BSC 1 1 0 uses
  • the central processing unit of the typical BSC 1 1 0 directs the
  • BTSs 100a...1 00n may thus manage a number of BTSs 100a...1 00n, with the exact number of BTS
  • the BSC 1 1 0 and BTS 100 dependfng upon the expected traffic capacity.
  • the NSS 30 serves as the interface between the GSM Network 1 0 and the landline networks 60.
  • the NSS 30 includes an element responsible for the switching
  • MSC Mobile Switching Center
  • the BSS 20 is also considered here to include a Transcoder and Rate Adaption Unit
  • (TRAU) 1 30 which is responsible for coordinating speech encoding and decoding and
  • Interface 70 which is specified by the GSM standard.
  • the MSC 1 20 switches or connects telephone calls between the BSS 20 and
  • GSM MSC 1 20 includes a switching matrix 1 25 and a
  • CPU 1 60 to control telephone switching, billing, subscriber unit tracking, subscriber
  • both the switching matrix 1 25 and CPU 1 60 of the MSC are of greater complexity
  • CPU central processing unit
  • the handover process performed in the BSC 1 1 0 makes use of
  • the measurement process typically includes measuring data indicating the receive power levels from the Mobile Stations 50. These reports typically occur
  • the system In a standard measurement process, the data is collected from the
  • the BSC 1 1 0 thus must also manage the radio channels via a channel
  • This process keeps track of which radio channels are
  • the number of Mobile Stations 50 in a cell may be any number of Mobile Stations 50 in a cell. For example, in various situations the number of Mobile Stations 50 in a cell may
  • measurement reports can be expected to be sent
  • the BTS in
  • a single BSC 1 1 0 may have been able to serve multiple
  • the BSS components particularly the BSC
  • An object of the present invention is to provide an improved efficiency Base
  • Another object of the present invention is to reduce the switching load in a
  • the present invention is a reduced Base Station Subsystem, wherein
  • Controller element of the present invention improves the reliability of the reduced
  • the MSC with its greater switching capacity,
  • Subsystem of the present invention extends that improvement in efficiency, thereby
  • the reduced Base Station Subsystem of the present invention may be any suitable Base Station Subsystem of the present invention.
  • the reduced Base Station In another embodiment of the present invention, the reduced Base Station
  • Subsystem of the present invention integrates into the Mobile Switching Center
  • This embodiment significantly improves the reliability of the GSM-based
  • Fig. 3 illustrates an embodiment of the reduced Base Station Subsystem in
  • Fig. 4 illustrates another embodiment of the reduced Base Station Subsystem
  • the present invention achieves the aforementioned desired objects by
  • a central processing unit for the efficient processing of message traffic between a
  • present invention provides the MSC with the ability to conduct all handover and
  • Fig. 3 illustrates an embodiment of the reduced Base Station Subsystem
  • MS mobile stations
  • the NSS 30 communicates message and control
  • a MSC 1 20 that comprises at least one
  • the MSC in turn
  • Reduced BSS 1 80 includes several modules, including TRAU-C 200, which
  • a second TRAU-C 220 operates in parallel
  • TRAU-C 200 Multiple TRAU-Cs can be arranged in either an Active/Active configuration or an Active/Standby configuration. In Active/Active configuration,
  • TRAU-C 200 and TRAU-C 220 are both
  • TRAU-C 200 designated Active and share call traffic. If either TRAU-C 200 or TRAU-C 220
  • the NMS 40 accomplishes
  • TRAU-C 200 is designated Active
  • TRAU-C 220 processes all call traffic, while TRAU-C 220 is designated Standby and remains idle.
  • NMS 40 designates TRAU-C 220 Active
  • TRAU-C 200 and TRAU-C 220 have knowledge of
  • TRAU-C 220 upon the failure of TRAU-C 200, TRAU-C 220
  • the remaining TRAU-C 220 invokes a global reset procedure whereby the
  • MSC 1 20 releases all calls, erases all call references, and idles all circuits.
  • a secondary TRAU-C is not
  • TRAU-C 200 of the present invention communicates message and control data
  • TRAU-C 200 does not perform
  • inter-BTS handoffs are conducted by the MSC 1 20, using
  • inter-BTS handovers is an improvement in wireless signal processing.
  • FIG. 4 another embodiment of the reduced BSS of the present
  • the NSS 30 is incorporated in a Mobile Switching Center, thereby improving the overall efficiency of the GSM-based system.
  • the NSS 30 is incorporated in a Mobile Switching Center, thereby improving the overall efficiency of the GSM-based system.
  • the NSS 30 is incorporated in a Mobile Switching Center, thereby improving the overall efficiency of the GSM-based system.
  • the NSS 30 is incorporated in a Mobile Switching Center, thereby improving the overall efficiency of the GSM-based system.
  • the MSC 300 in turn communicates the switched message and control
  • MSC 300 comprises
  • At least one switching matrix 325 at least one switching matrix 325, a central processing unit 360, and a TRAU-C
  • MSC 300 includes at least one TRAU-C
  • TRAU-C units including e.g. TRAU-C 340.
  • TRAU-C 330 and TRAU-C 340 are configured as TRAU-C 200 and TRAU-C 220
  • TRAU-C 330 and TRAU-C 340 provide parallel
  • TRAU-C processing providing all of the options for call management in the event of
  • MSC 300 of the current embodiment communicates message and control
  • MSC 300 performs all circuit switching performed by prior art Base
  • TRAU-C units 330 and 340 lack any switching matrix
  • BTS are still permitted, as only radio channel alteration is required, a function that can be performed by the affected BTS and managed by the controlling MSC 300.
  • inter-BTS handoffs are provided. According to the principles of the present invention, inter-BTS handoffs are provided.
  • MSC 300 circuit pools are affected by the reduced
  • BSS 31 0 of the present invention in that the pool must be partitioned on a per-cell

Landscapes

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

Abstract

Cette invention concerne un sous-système de station de base nouveau et plus efficace (fig. 3) qui réduit la complexité, la charge de travail et le coût d'une unité de commande de station de base (110), tout en améliorant les performances globales et la fiabilité d'un système de télécommunication sans fil à base GSM. Dans un réseau à base GSM, le sous-système réduit de station de base (BSS) (180) de la présente invention permet d'éliminer toutes les fonctions de commutation à partir de l'unité de commande de station de base (110) (110), ce qui améliore considérablement la fiabilité du BSS (180) tout en réduisant la complexité et le coût. Le BSS réduit (180) selon l'invention exige également que toutes les commutations et fonctions de transfert des systèmes de réception entre bases se déroulent dans l'élément centre de commutation mobile du sous-système de réseau et de commutation (NSS) (30). De plus, le BSS réduit (180) selon l'invention intègre une unité de transcodage et d'adaptation de débit (TRAU) (130) avec une unité centrale de traitement qui exécute l'ensemble des tâches restantes en rapport avec une unité de commande de station de base (BSC). On dispose ainsi d'un BSS (180) d'une bien moindre complexité, d'une plus grande fiabilité et d'un coût plus faible que des sous-systèmes de stations de base classiques de type GSM, sans violation de l'infrastructure GSM ni nécessité de disposer d'interfaces exclusives.
PCT/US2000/014383 2000-05-24 2000-05-24 Commande d'architectures cellulaires radio a base integres a des unites de transcodage et d'adaptation de debit WO2001091481A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US2000/014383 WO2001091481A1 (fr) 2000-05-24 2000-05-24 Commande d'architectures cellulaires radio a base integres a des unites de transcodage et d'adaptation de debit
AU2000252889A AU2000252889A1 (en) 2000-05-24 2000-05-24 Control of gsm based radio cellular architectures integrated within transcoder and rate adaption units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/014383 WO2001091481A1 (fr) 2000-05-24 2000-05-24 Commande d'architectures cellulaires radio a base integres a des unites de transcodage et d'adaptation de debit

Publications (1)

Publication Number Publication Date
WO2001091481A1 true WO2001091481A1 (fr) 2001-11-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/014383 WO2001091481A1 (fr) 2000-05-24 2000-05-24 Commande d'architectures cellulaires radio a base integres a des unites de transcodage et d'adaptation de debit

Country Status (2)

Country Link
AU (1) AU2000252889A1 (fr)
WO (1) WO2001091481A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5884148A (en) * 1996-07-08 1999-03-16 Omnipoint Corporation Wireless local loop system and method
US5887256A (en) * 1995-05-04 1999-03-23 Interwave Communications International, Ltd. Hybrid cellular communication apparatus and method
US5999813A (en) * 1995-05-04 1999-12-07 Interwave Communications Overlay cellular communication system
US6041230A (en) * 1997-03-13 2000-03-21 Nokia Telecommunications Oy Transmission method and a cellular radio system
US6061566A (en) * 1994-03-09 2000-05-09 Nokia Telecommunications Oy Mobile communication system and call control method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6061566A (en) * 1994-03-09 2000-05-09 Nokia Telecommunications Oy Mobile communication system and call control method
US5887256A (en) * 1995-05-04 1999-03-23 Interwave Communications International, Ltd. Hybrid cellular communication apparatus and method
US5999813A (en) * 1995-05-04 1999-12-07 Interwave Communications Overlay cellular communication system
US5884148A (en) * 1996-07-08 1999-03-16 Omnipoint Corporation Wireless local loop system and method
US6041230A (en) * 1997-03-13 2000-03-21 Nokia Telecommunications Oy Transmission method and a cellular radio system

Also Published As

Publication number Publication date
AU2000252889A1 (en) 2001-12-03

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