WO2009059477A1 - Procédé pour réaliser une interaction à possibilité de codage/décodage vocal entre un réseau radio et un réseau d'infrastructure - Google Patents

Procédé pour réaliser une interaction à possibilité de codage/décodage vocal entre un réseau radio et un réseau d'infrastructure Download PDF

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Publication number
WO2009059477A1
WO2009059477A1 PCT/CN2007/003939 CN2007003939W WO2009059477A1 WO 2009059477 A1 WO2009059477 A1 WO 2009059477A1 CN 2007003939 W CN2007003939 W CN 2007003939W WO 2009059477 A1 WO2009059477 A1 WO 2009059477A1
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WO
WIPO (PCT)
Prior art keywords
cell
base station
capability
voice
request message
Prior art date
Application number
PCT/CN2007/003939
Other languages
English (en)
Chinese (zh)
Inventor
Xinhui Wamg
Original Assignee
Zte 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 Zte Corporation filed Critical Zte Corporation
Priority to CN2007801011336A priority Critical patent/CN101828423B/zh
Publication of WO2009059477A1 publication Critical patent/WO2009059477A1/fr
Priority to HK10107495.3A priority patent/HK1141187A1/xx

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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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • 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
    • H04W92/14—Interfaces between hierarchically different network devices between access point controllers and backbone network device

Definitions

  • the present invention relates to mobile communication or specifically, and relates to a method for implementing interaction between a voice codec capability of a wireless network and a core network. Background technique
  • GSM Global System for Mobile Communications
  • MS Mobile Switching Center
  • BSC Base Station Controller
  • the A interface is used for communication.
  • the A interface is carried based on Time Division Multiple (TDM).
  • TDM Time Division Multiple
  • PCM Pulse Code Modulation
  • PCM Pulse Code Modulation
  • the compressed voice coded signal is transmitted.
  • the interface between the BTS and the BSC is an Abis interface, which is also based on TDM bearer, and transmits the same compressed speech coded signal as the Um interface.
  • the BSC has a Transcode Rate Adaption Unit (TRAU), and the unit that implements this function is a Transcoder (Transcoder, referred to as TC).
  • T Transcoder
  • the TC completes the compressed voice transmitted in the Abis interface. Coding with 64Kbps PCM speech coding transmitted in the A interface.
  • the core network realizes the separation of control and bearer, and the MSC is decomposed into two functional entities, namely: Mobile Switching Center Server (Mobile Switching Center Server) MSC Server) and Media Gateway (MGW).
  • the MSC Server is mainly used to control the signaling and the call, and the MGW mainly provides the service bearer.
  • the MGW can serve as a termination point to process the data stream of the bearer channel or the packet network from the circuit switched network.
  • the MGW supports media conversion, bearer control, and load handling, such as codec, echo suppression, conference bridging, and so on.
  • the interface between the MSC Server and the MGW is the Mc interface, and the MSC Server completes the control of the MGW through the Mc interface.
  • the A interface is gradually based on IP bearers, ie A Interface Over IP, referred to as AoIP.
  • the GSM communication network includes: a mobile terminal 60, a base station 50, a base station controller 20, a media gateway 30, a mobile switching center server 10, and a mobile terminal 60 and a base station 50.
  • the MGW itself has a pattern conversion and rate adaptation function
  • the TRAU function in the BSC can be cancelled, that is, the TC in the BSC is cancelled, and the same compressed speech codec signal as the Abis interface is also transmitted on the A interface, when needed.
  • the codec conversion and rate adaptation functions of the MGW are used for speech codec. This architecture greatly reduces the requirements for the transmission resources of the A interface, which is beneficial to operators to reduce operating expenses.
  • the MGW needs to insert the TC for code conversion and rate adaptation when processing the call, which is still not solved compared with the original GSM network system.
  • Trfo Transcoder Free Operation
  • the technical problem to be solved by the present invention is to provide a method for realizing the interaction between the voice codec capability of the wireless network and the core network, which enables the MSC Server to learn the voice codec capability of the cell in the wireless network, thereby reducing the core network to the wireless network. It is possible to assign a voice version that it cannot provide.
  • a method for implementing interaction between a wireless network and a core network voice codec capability includes the following steps: The mobile switching center server sends a ⁇ voice codec capability request message to the base station controller; After receiving the message encoding and decoding capability request message, the base station controller acquires the voice codec capability of the corresponding cell, and reports the acquired voice codec capability of the corresponding cell to the mobile switching center server. Further, the upper voice coding and decoding capability request message uses a resource request message in the base station subsystem application part message.
  • the Spare field of the cell identifier cell of the resource request message is used for identification; when the mobile switching center server requests the base station controller to report it.
  • the cell identifier field of the Spare field and the cell identifier cell is used to identify the cell that needs to be voice codec.
  • the identifier 1 when the identifier 1 is in the Spare field, it indicates that the mobile switching center server requires the base station controller to report the voice codec capability of all the cells it manages; when the 0 is identified in the Spare field, the mobile switching center server requests the base station controller to request The cell identifier field of the cell identifier cell is queried for the cell that needs to report the voice codec capability.
  • the base station controller reports the acquired voice codec capability of the corresponding cell to the mobile switching center server by using the resource indication message in the base station subsystem application part message.
  • a codec list cell of a base station subsystem is extended in the resource indication message, and information of the voice codec capability of the one or more cells is carried in the preferred codec list cell of the base station subsystem.
  • the resource indication message is multiple, and the specific number of the resource indication message is identified in the report voice codec capability request message.
  • the process of acquiring the voice codec capability of the corresponding cell includes: the base station controller parses the received voice message encoding and decoding capability request message, and performs voice coding on the cell that needs to report the voice codec capability according to the analysis result. Query of decoding capabilities.
  • the resource request further includes: a resource indication mode cell and a periodic cell, and the resource indication mode cell and the periodic cell respectively identify the reporting manner and frequency when the base station controller reports the cell codec capability.
  • the voice coding and decoding capability of a wireless network and a core network of the present invention interacts with each other.
  • the BSC reports the voice codec capability of the cell managed by the BSC to the MSC Server, so that the MSC Server can analyze and compare the received voice codec capability of the wireless cell with the voice codec capability of the MGW, and pass the decision algorithm.
  • the MSC Server can analyze and compare the received voice codec capability of the wireless cell with the voice codec capability of the MGW, and pass the decision algorithm.
  • the present invention does not require changes to the existing Um interface and Abis interface, and has no impact on the mobile terminals and base stations of the existing communication network.
  • FIG. 1 is a schematic diagram of a network structure of a GSM communication system to which the present invention is applied in the case of AoIP;
  • FIG. 2 is a flowchart of the method of the present invention;
  • FIG. 3 is a schematic structural diagram of an extended resource request message according to the present invention.
  • FIG. 4 is a schematic structural diagram of a cell identifier cell in an extended resource request message according to the present invention
  • FIG. 5 is a schematic structural diagram of an extended resource indication message according to the present invention
  • FIG. 6 is a schematic structural diagram of a preferred codec table cell of a base station subsystem in an extended resource indication message according to the present invention.
  • the BSC after receiving the report voice codec capability request message sent by the MSC Server, the BSC queries the voice codec capability of the corresponding cell according to the request of the voice codec request message, and queries and decodes the voice codec of the corresponding cell. The capability is reported to the MSC Server.
  • BSSAP base station system application part
  • Step 20 The MSC Server 10 sends a Captain Speech Codec Request message to the BSC 20.
  • the MSC Server 10 sends the BSC to the BSC through the A interface.
  • the voice codec capability request message is reported, and the voice coding and decoding capability of the cell is required to be reported;
  • the above-mentioned reported voice codec capability request message is a resource request message in the base station subsystem application part message.
  • the resource request message includes a cell identifier (Cell Identifier) cell, where the cell identifier cell is used.
  • the description information of a cell is provided.
  • the Cell Identifier cell is extended, and the spare field Spare in the Cell Identifier cell is utilized, and the BSC20 is notified by marking in the Spare field.
  • a cell that reports a voice codec capability such as a flag 1 in the Spare field, may indicate that the BSC 20 is required to report the voice codec capability of all cells it manages. For example, if the identifier 0 is in the Spare field, the BSC 20 is required to request the cell identifier cell.
  • a cell that needs to report voice codec capability is parsed in the cell identifier field.
  • the MSC Server 10 requires the BSC 20 to report the voice codec capability of all the cells managed by the BSC 20, so the Spare field identifier is 1.
  • the Spare field is identified as 0, and the cell identifier of the cell that needs to report the voice codec capability is written into the cell identifier. In the field.
  • the resource request message further includes: a resource indication method (Cell Indication Method), a cell (Lifement) cell, and an extended resource indicator (Extended Resource Indicator) cell, and the resource indication mode cell and the periodic cell are respectively used.
  • the resource indication mode field is set to 1 to indicate that the BSC 20 is to report a single report, that is, the BSC 20 only needs to report once, and the resource indication mode field is set to 0 to indicate that the method is used.
  • the periodic mode is reported, and the period of reporting is defined in the periodic cell.
  • the extended resource indicator is used to define the number of reported messages when the BSC 20 reports the cell voice codec capability. Because the BSC 20 may have many cells, the BSC 20 may be required to report the voice coding and decoding capability of the cell each time. The number of messages used by the BSC 20 is defined in the extended resource indicator cell.
  • Step 202 After receiving the message encoding and decoding capability request message, the BSC 20 parses the reported voice codec capability request message, and requests the voice coding and decoding capability according to the analysis result. The voice coding and decoding capabilities of the cell are queried;
  • the BSC 20 receives the resource request message sent by the MSC Server 10 through the A interface, that is, the resource request message. After receiving the resource request message, the BSC 20 parses the resource request message. When the identifier of the Spare field is 1 is determined, the voice codec capability of all the cells managed by the BSC 20 is queried.
  • the MSC Server 10 If the MSC Server 10 only requests the BSC 20 to report the voice codec capability of a certain cell or a certain cell, that is, the BSC 20 parses the identifier of the Spare field to 0, the BSC 20 continues to parse the cell identity field, and parses the write cell identity field therefrom. The cell identifier, and query the voice codec capability of the cell represented by the parsed cell identifier.
  • Step 203 The BSC 20 sends the queried voice codec capability of the queried cell to the MSC.
  • the BSC 20 sends the voice codec of all the queried cells to the MSC Server 10 through the resource indication message in the base station subsystem application part message, because the resource indication message can only report the voice codec of one cell at a time.
  • the resource indication message is extended. As shown in FIG. 5, a BSS Preferred Codec List cell is added to the RESOURCE INDICATION message. The cell reports voice coding and decoding capabilities of multiple cells.
  • the present invention The voice codec capability of all cells managed by the BSC 20 is reported by means of multiple RESOURCE INDICATION messages.
  • the number of resource indication messages actually used by the BSC 20 is parsed from the resource indicator cells of the resource request message.
  • the BSS Preferred Codec List cell includes: a Total Number of Segment field, which is used to indicate the number of all RESOURCE INDICATION messages, and the total number of resource request messages in the field. The value is the same as the value identified by the BSC 20 from the resource indicator cell of the resource request message; the current resource request message sequence number (Num of Segment) field is used to identify the sequence number of the current RESOURCE INDICATION message in all RESOURCE INDICATION messages, thereby Notify MSC ServerlO Whether there is a resource indication message that needs to be received; a current resource request message length (Length) field, which is used to indicate the length of the current RESOURCE INDICATION message; and codec capability information of m cells included in each RESOURCE INDICATION message, m Can be set as a parameter, such as m can be set to 32 and so on.
  • a Total Number of Segment field which is used to indicate the number of all RESOURCE INDICATION messages, and the total number of resource
  • the MSC Server 10 can complete the voice codec of the received cell through the control signaling of the Mc interface and the voice codec of the MGW.
  • Ability to do analysis and comparison take out the speech codec type of the common language; select a common speech codec type through the decision algorithm, and notify the BSC20 and other steps, thereby reducing the occurrence of the voice version that the core network cannot provide the voice network, thereby The number of speech codecs is reduced, which is beneficial to implement Trfo and improve voice quality.

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

Abstract

L'invention porte sur un procédé pour réaliser une interaction à possibilité de codage/décodage vocal entre un réseau radio et un réseau d'infrastructure. Le procédé comprend les étapes suivantes : un serveur de centre de commutation mobile (MSC) envoie un message de requête de rapport de possibilité de codage/décodage vocal à un contrôleur de station de base (BSC) ; après que le contrôleur de station de base a reçu le message de requête de rapport de possibilité de codage/décodage vocal, il acquiert la possibilité de codage/décodage vocal d'une cellule correspondante, et rapporte la possibilité de codage/décodage vocal acquise de la cellule correspondante au serveur de centre de commutation mobile. Dans la présente invention, le BSC rapporte la possibilité de codage/décodage vocal des cellules gérées par lui-même au serveur MSC, permettant ainsi au serveur MSC d'analyser et de comparer la possibilité de codage/décodage vocal reçue de la cellule radio et la possibilité de codage/décodage vocal d'une passerelle multimédia (MGW), pour ensuite sélectionner le type de codage/décodage vocal commun analysé par un algorithme de décision. La présente invention offre la possibilité de réduire l'occurrence du fait que le réseau d'infrastructure attribue au réseau radio le type vocal qui ne peut pas être fourni par le réseau radio, et crée les conditions pour réaliser le Trfo.
PCT/CN2007/003939 2007-11-08 2007-12-29 Procédé pour réaliser une interaction à possibilité de codage/décodage vocal entre un réseau radio et un réseau d'infrastructure WO2009059477A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2007801011336A CN101828423B (zh) 2007-11-08 2007-12-29 一种无线网与核心网间语音编解码能力交互的实现方法
HK10107495.3A HK1141187A1 (en) 2007-11-08 2010-08-05 A method for realizing voice coding/decoding capability interaction between a radio network and a core network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710165557.0 2007-11-08
CN2007101655570A CN101163286B (zh) 2007-11-08 2007-11-08 一种无线网与核心网间语音编解码能力交互的实现方法

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Publication Number Publication Date
WO2009059477A1 true WO2009059477A1 (fr) 2009-05-14

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PCT/CN2007/003939 WO2009059477A1 (fr) 2007-11-08 2007-12-29 Procédé pour réaliser une interaction à possibilité de codage/décodage vocal entre un réseau radio et un réseau d'infrastructure

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CN (2) CN101163286B (fr)
HK (1) HK1141187A1 (fr)
WO (1) WO2009059477A1 (fr)

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RU2527484C2 (ru) * 2009-08-19 2014-09-10 Зет-Ти-И Корпорейшн Способ связи глобальной системы мобильной связи (gsm), устройство и система для сотового хэндовера
WO2016090941A1 (fr) * 2014-12-10 2016-06-16 中兴通讯股份有限公司 Procédé et système d'établissement de service de partage, et support d'informations
CN115022972A (zh) * 2018-09-21 2022-09-06 华为技术有限公司 用户终端的能力信息传输方法和相关装置

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CN101577974A (zh) * 2008-06-23 2009-11-11 中兴通讯股份有限公司 基于ip承载时a接口用户面呼叫建立的方法
GB2461684A (en) * 2008-06-27 2010-01-13 Vodafone Plc Transmitting communication mode information between network elements
CN101635994B (zh) * 2008-07-25 2013-03-20 中兴通讯股份有限公司 核心网获取无线网语音编码能力及实现TrFO的方法
CN101938736A (zh) * 2009-06-30 2011-01-05 中兴通讯股份有限公司 家庭基站本地网际协议网络访问能力的上报方法及系统

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2527484C2 (ru) * 2009-08-19 2014-09-10 Зет-Ти-И Корпорейшн Способ связи глобальной системы мобильной связи (gsm), устройство и система для сотового хэндовера
WO2016090941A1 (fr) * 2014-12-10 2016-06-16 中兴通讯股份有限公司 Procédé et système d'établissement de service de partage, et support d'informations
CN115022972A (zh) * 2018-09-21 2022-09-06 华为技术有限公司 用户终端的能力信息传输方法和相关装置
CN115022972B (zh) * 2018-09-21 2023-04-07 华为技术有限公司 用户终端的能力信息传输方法和相关装置

Also Published As

Publication number Publication date
HK1141187A1 (en) 2010-10-29
CN101163286A (zh) 2008-04-16
CN101828423A (zh) 2010-09-08
CN101828423B (zh) 2012-11-14
CN101163286B (zh) 2011-11-30

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