WO2011069375A1 - Procédé, appareil et système destinés à commander une commutation locale - Google Patents

Procédé, appareil et système destinés à commander une commutation locale Download PDF

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Publication number
WO2011069375A1
WO2011069375A1 PCT/CN2010/076192 CN2010076192W WO2011069375A1 WO 2011069375 A1 WO2011069375 A1 WO 2011069375A1 CN 2010076192 W CN2010076192 W CN 2010076192W WO 2011069375 A1 WO2011069375 A1 WO 2011069375A1
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WO
WIPO (PCT)
Prior art keywords
user
local exchange
base station
matching information
station controller
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Application number
PCT/CN2010/076192
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English (en)
Chinese (zh)
Inventor
刘强
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中兴通讯股份有限公司
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Filing date
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Publication of WO2011069375A1 publication Critical patent/WO2011069375A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/10—Reselecting an access point controller

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, apparatus, and system for controlling local switching.
  • Local exchange refers to the way in which the calling and called users do not pass through the core network but directly between the two called base stations.
  • the communication method reduces the occupation of the core network resources, shortens the transmission delay of the voice, saves the use bandwidth of the interface between the base station controller and the base station (Abis interface), and provides convenience for operators and users.
  • the biggest feature of local switching is that user plane data is no longer transmitted directly between the base stations via the core network. When the call is delivered in the above manner, it can be considered to be performed in the local exchange mode.
  • Local switching can be implemented either by means of the core network's Mobile Switching Centre (MSC) or by means of a Base Station Control (BSC).
  • MSC Mobile Switching Centre
  • BSC Base Station Control
  • the local exchange currently implemented is mainly implemented inside the BSC. It is common practice to establish a call resource table at the BSC by extracting information about the number in the SETUP message sent or received by the mobile phone, and perform local exchange matching according to the call resource in the call resource table. This can successfully implement local exchange within a BSC. However, it cannot be achieved when it is between BSCs. The reason is that the BSC can only record the user information of the call or the called party in its own jurisdiction. When two users call within one BSC, the BSC can obtain information such as the calling and called numbers, so that local exchange matching can be performed.
  • 3GPP 3rd Generation Partnership Project
  • the embodiments of the present invention provide a method, an apparatus, and a system for controlling local switching, so as to solve the problem that local switching cannot be implemented across a BSC in the prior art. Specifically, the technical solution of the embodiment of the present invention is as follows:
  • a method for controlling a local exchange when a first user under the first base station controller performs session switching with a second user under the second base station controller, the method includes: the first base station controller to the core network Transmitting a local exchange matching information carrying the first user; the second base station controller acquiring local exchange matching information of the first user from the core network; and after the session handover is successful, the second base station controller The local exchange matching information of the first user is matched with the local exchange matching information of the second user, and if the matching is successful, the local exchange is performed.
  • the step of the first base station controller transmitting the local exchange matching information of the first user to the core network includes: the first base station controller reading local exchange matching information of the first user stored by the first base station controller; A local exchange matching information of a user is carried in the handover requirement message and sent to the core network.
  • the step of the second base station controller acquiring the local exchange matching information of the first user from the core network includes: the second base station controller receiving a handover request message sent by the core network; and the handover request message The local exchange matching information of the first user is parsed and cached. After the session is successfully switched, the method further includes: the second base station controller recording local exchange matching information of the first user.
  • the method further includes: after the session handover fails, the second base station controller clears the channel-related resources prepared for the handover and the local exchange matching information of the first user according to the clear command of the core network.
  • the local exchange matching information includes: local exchange indication information, channel type, channel mode, coded version, and number of the second user.
  • a base station controller comprising: an obtaining module, configured to: obtain local exchange matching information of a user; and generate a module, configured to: fill the user's local exchange matching information into the handover requirement message; and send a module, Set to: Send the switch demand message.
  • a base station controller includes:
  • a storage module configured to: store local exchange matching information of the second user;
  • the receiving module is configured to: receive a handover request message that is sent by the core network and that carries local exchange matching information of the first user; and a parsing module, where: And parsing the local exchange matching information of the first user from the handover request message;
  • the matching module is configured to: after the first user successfully performs session switching to the second user, The exchange matching information is matched with the local exchange matching information of the second user; and the local switching module is configured to: when the matching result of the matching module is successful, perform local exchange.
  • the base station controller further includes: a recording module, configured to: record the local exchange matching information of the first user after the session is successfully switched.
  • the base station controller further includes: And a clearing module, configured to: after the session switching fails, clear the channel-related resources prepared for the handover and the local exchange matching information of the first user according to the clear command of the core network.
  • a system for controlling a local exchange comprising: a first base station controller, configured to: when a first user under the first base station controller performs session switching to a second user under the second base station controller, to the core network And transmitting, by the second base station controller, the second base station controller, configured to: obtain local exchange matching information of the first user from the core network; after the session switching succeeds, the first The local exchange matching information of the user is matched with the local exchange matching information of the second user, and if the matching is successful, the local exchange is performed.
  • the first base station controller sends the local exchange matching information of the first user to the core network; the second base station controller acquires the local exchange matching information of the first user from the core network; The second base station controller matches the local exchange matching information of the first user with the local exchange matching information of the second user. If the matching is successful, the local exchange is performed, and the local exchange can be performed across the BSC, thereby saving the bandwidth resource of the Abis interface. , simple to implement, is conducive to the promotion of business.
  • FIG. 1 is a flowchart of a method for controlling local switching according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a conventional handover message and a handover procedure
  • FIG. 3 is a flowchart of a method for controlling local exchange according to an embodiment of the present invention
  • 4 is a schematic structural diagram of a base station controller according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of another base station controller according to an embodiment of the present invention
  • a structural diagram of the exchanged system
  • the core idea of the present invention is to: transmit the first use of the first base station controller to the core network.
  • the second base station controller obtains the local exchange matching information of the first user from the core network; after the session handover succeeds, the second base station controller matches the local exchange matching information of the first user with the second user The local exchange matching information is matched. If the matching is successful, the local exchange is performed, so that local switching can be performed across the BSC, which saves bandwidth resources of the Abis interface.
  • the technical solution of the invention is simple to implement and is beneficial to the promotion of the business.
  • the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.
  • the embodiment of the present invention provides a method for controlling local switching. When the first user under the first base station controller performs session switching to the second user under the second base station controller, as shown in FIG. 1, the method includes: The first base station controller sends the local exchange matching information carrying the first user to the core network;
  • the second base station controller acquires local exchange matching information of the first user from the core network.
  • the second base station controller matches the local exchange matching information of the first user with the local exchange matching information of the second user.
  • the step of the first base station controller transmitting the local exchange matching information of the first user to the core network includes: the first base station controller reads the local exchange matching information of the first user stored by the first base station; The local exchange matching information is carried in the handover request message and sent to the core network.
  • the step of the second base station controller acquiring the local exchange matching information of the first user from the core network includes: receiving, by the second base station controller, a handover request message sent by the core network; and parsing the locality of the first user from the handover request message Exchange matching information and cache. Further, after the session is successfully switched, the method further includes: the second base station controller recording local exchange matching information of the first user.
  • the method further includes: After the session handover fails, the second base station controller clears the channel-related resources prepared for the handover and the local exchange matching information of the first user according to the clear command of the core network.
  • the local exchange matching information includes: local exchange indication information, channel type, channel mode, coded version, and number of the second user.
  • the BSC1 and BSC2 switch BSC1 and BSC2 are related to the information exchange process before the handover implementation.
  • the application scenario is that the base transceiver station (BTS) of the calling subscriber A under the BSC1 is ready to switch to the BTS2 under the BSC2.
  • BTS base transceiver station
  • the interaction process includes:
  • the BSC1 After receiving the measurement report (Measure Report) message sent by the mobile phone (User A) through the BTS1, the BSC1 makes a decision to switch to the BSC2.
  • the BSC1 sends a Handover Required message to the MSC, requests to switch to the BSC2, and informs the MSC about the condition of the allocated wireless resource of the originating mobile phone, the cell identity, and the reason for the handover by using the handover request message.
  • the MSC receives the Handover Required message, sends a Handover Request message to the target BSC2, and notifies the other party that the mobile phone identity, the cell identity, and the MSC can allocate resources.
  • the BSC2 receives the Handover Request message, and after the channel is activated by the channel active (Channel Active) message and the channel active acknowledgement (Channel Active Ack) message, returns a Handover Request Ack message to the MSC, and informs the switchable Channel condition.
  • Channel Active Channel Active
  • Channel Active Ack Channel Active acknowledgement
  • the MSC After receiving the Handover Request Ack message, the MSC sends a Handover Command message to the BSC1.
  • the BSC After receiving the Handover Command message, the BSC sends a Handover Command message to the user A to notify the target cell and the channel of the mobile phone handover. Finally, User A switches after receiving the Handover Command message.
  • the embodiment of the present invention improves the old base station (BSS) to the new BSS information unit (BBS to New BSS Information Elements) in the Handover Request message and the Handover Required message.
  • BSS base station
  • BSS new BSS information unit
  • Old BSS to New BSS Information Unit represents Old BSS to New BSS Information elements to transfer content.
  • Old BSS to New BSS Information elements can be set as needed.
  • the Old BSS to New BSS Information unit shown in Table 2 is taken as an example for detailed description. However, the scope of protection of the present invention is not limited thereto.
  • the Old BSS to New BSS Information unit is an encoding format that can be used to pass local exchange related information.
  • Table 2 Old BSS to New BSS Information Unit
  • Called number The called number of the user.
  • Called number The called number of the user.
  • a Local Switch Element identifier is used to indicate that the information is locally exchanged related content.
  • the length (length) of the local switching unit which identifies the content length of this information unit.
  • Embodiments of the present invention are described below in conjunction with FIG. 3 and the modified Old BSS to New BSS Information unit.
  • the application scenario of this example is that user A calls BTS2 user B located under BSC2 through BTS1 and BSC1.
  • BSC1 records local exchange matching information in the global call resource table, including: User B's number, user A's channel type, channel mode, and user A's coded version, etc.
  • BSC2 records local exchange matching information in the global call resource table, including: the number of the called user B, the channel type of user B, and the channel.
  • BSC1 After receiving the measurement of user A, BSC1 makes a decision to switch to BSC2.
  • the BSC1 sends a Handover Required message of the user A's local exchange matching information to the MSC. Specifically, when the user A has externally cut out, the BSC1 exchanges the matching information in the Handover Required message, including: the number of the called user B, the channel type of the user A, the coded version of the user A, and the channel of the user A. For details about the mode and local exchange information element identifiers, refer to the structure of the Old BSS to New BSS Information unit shown in Table 2, and details are not described here.
  • the BSC1 sends a Handover Required message filling the user's local exchange matching information to the MSC.
  • the MSC receives the Handover Required message, and sends the carrying user to the target BSC2.
  • the Handover Request message of A's local exchange matching information Specifically, the MSC directly writes the content in the Old BSS to New BSS Information unit in the Handover Required message to the Old BSS to New BSS Information unit in the Handover Request message; 504, the BSC2 receives the Handover Request message, and exchanges the information locally.
  • the local exchange matching information of the user is parsed and cached. Specifically, when parsing the Old BSS to New BSS Information information element, the BSC2 needs to determine whether there is a local exchange information element identifier. If so, the user A's local exchange matching information is cached. 505, BSC2 confirms by channel activation (Channel Active) message and channel activation (Channel
  • the BSC2 replies to the MSC with a Handover Request Ack message to inform the switchable channel condition.
  • the MSC After receiving the Handover Request Ack message, the MSC sends a Handover Command message to the BSC1.
  • step 508 After receiving the handover command (Handover Command) message, the BSC1 sends a handover Handover Command message to the user A through the BTS1 to notify the mobile phone of the target cell and the channel. If the handover fails, step 509 is performed, and if the handover is successful, step 511 is performed;
  • user A After determining that the handover fails, user A sends a handover failure message to BSC1 via BTS1. 510.
  • the BSC1 informs the MSC of the handover failure message.
  • the MSC sends a clear command to BSC2.
  • BSC2 clears the channel prepared for switching in BSC2 according to this command. At this time, the local exchange matching information of the user A transmitted by the cached BSC1 is also cleared, and the process ends.
  • the BSC2 After receiving the Handover Command message, user A performs handover, and after the handover succeeds, sends a handover success command, and informs BSC2 of the handover success message through BTS2. 512.
  • the BSC2 learns that the handover is successful, it detects whether the local exchange matching information of the user A matches the local exchange matching information of the user B, and if yes, performs local exchange conversion.
  • the method for matching the BSC2 may be: determining whether the local exchange matching information of the user A and the user B has the same number of the called user B, and if so, further determining whether the user A and the user B exchange matching information have the same channel type. , channel mode, encoding format, etc., if any, it is determined that the matching is successful. If the match is successful, the call is transferred from the original legacy mode to the local exchange mode.
  • the embodiment of the present invention further provides a base station controller, as shown in FIG. 4, comprising: an obtaining module, configured to: obtain local exchange matching information of a user; and generate a module, where: the setting is:: matching local exchange information of the user Filling in the handover requirement message; and sending module, which is set to: send the handover requirement message.
  • the local exchange matching information includes: local exchange indication information, channel type, channel mode, coded version, and number of the second user.
  • the embodiment of the present invention further provides a base station controller, as shown in FIG. 5, including:
  • a storage module configured to: store local exchange matching information of the second user; the receiving module is configured to: receive a handover request message that is sent by the core network and that carries local exchange matching information of the first user; and a parsing module, where: The local exchange matching information of the first user is parsed from the handover request message, and the matching module is configured to: after the first user successfully performs session switching to the second user, match the local exchange of the first user The information is matched with the local exchange matching information of the second user.
  • the local switching module is configured to: when the matching result of the matching module is successful, perform local exchange.
  • the base station controller further includes: The recording module is configured to: when the session is successfully switched, record the local exchange matching information of the first user.
  • the base station controller further includes: a clearing module, configured to: after the handover fails, clear the channel related resource prepared for the handover and the local exchange of the first user according to the clear command of the core network Match information.
  • the local exchange matching information includes: local exchange indication information, channel type, channel mode, coded version, and number of the second user.
  • the embodiment of the present invention further provides a system for controlling local switching.
  • the method includes: a first base station controller, configured to: when a first user under the first base station controller is directed to the second base station controller When the second user performs session switching, sending the local exchange matching information carrying the first user to the core network; and the second base station controller is configured to: obtain the local exchange matching information of the first user from the core network; After the handover is successful, the local exchange matching information of the first user is matched with the local exchange matching information of the second user. If the matching is successful, the local exchange is performed.
  • the local exchange matching information includes: local exchange indication information, channel type, channel mode, coded version, and number of the second user.

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

Abstract

La présente invention concerne un procédé de commande d'une commutation locale. Lorsqu'une session est transférée entre un premier utilisateur d'un premier contrôleur de station de base (BSC) et un second utilisateur d'un second contrôleur de station de base, le procédé comprend les étapes suivantes : ledit premier contrôleur de station de base envoie à un réseau central un message de demande de transfert qui contient des informations de correspondance de commutation locale du premier utilisateur; ledit second contrôleur de station de base obtient du réseau central les informations de correspondance de commutation locale du premier utilisateur; après succès du transfert de la session, ledit second contrôleur de station de base fait correspondre les informations de correspondance de commutation locale du premier utilisateur avec celles du second utilisateur et, si la mise en correspondance réussit, la commutation locale se produit. La présente invention concerne également un contrôleur de station de base et un système destinés à commander une commutation locale. La présente invention permet de réaliser une commutation locale entre contrôleurs de station de base.
PCT/CN2010/076192 2009-12-09 2010-08-20 Procédé, appareil et système destinés à commander une commutation locale WO2011069375A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910252457.0 2009-12-09
CN200910252457.0A CN102098654B (zh) 2009-12-09 2009-12-09 控制本地交换的方法、装置和系统

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CN103327477B (zh) * 2012-03-23 2018-03-20 中兴通讯股份有限公司 用户面数据的传递方法、bss、移动交换中心和核心网
CN103327551B (zh) * 2012-03-23 2018-07-13 中兴通讯股份有限公司 一种涉及本地通话本地交换的切换处理方法及基站子系统
CN102752815B (zh) * 2012-06-26 2015-12-16 华为技术有限公司 传递逻辑链路控制协议数据单元的方法、控制器及系统
CN104137603B (zh) * 2012-12-28 2018-01-19 华为技术有限公司 协作通信方法、装置及基站

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WO2006126923A1 (fr) * 2005-05-27 2006-11-30 Telefonaktiebolaget Lm Ericsson (Publ) Commutation locale dans des reseaux d'acces radio
CN101159905A (zh) * 2007-11-07 2008-04-09 华为技术有限公司 基站控制器内实现本地交换方法、核心网设备及网络系统
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WO2006126923A1 (fr) * 2005-05-27 2006-11-30 Telefonaktiebolaget Lm Ericsson (Publ) Commutation locale dans des reseaux d'acces radio
CN101159905A (zh) * 2007-11-07 2008-04-09 华为技术有限公司 基站控制器内实现本地交换方法、核心网设备及网络系统
CN101541096A (zh) * 2008-03-18 2009-09-23 中国移动通信集团公司 A接口ip化后的本地交换方法及设备

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Title
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