WO2010108396A1 - Système et procédé de redistribution de charge - Google Patents

Système et procédé de redistribution de charge Download PDF

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Publication number
WO2010108396A1
WO2010108396A1 PCT/CN2010/070331 CN2010070331W WO2010108396A1 WO 2010108396 A1 WO2010108396 A1 WO 2010108396A1 CN 2010070331 W CN2010070331 W CN 2010070331W WO 2010108396 A1 WO2010108396 A1 WO 2010108396A1
Authority
WO
WIPO (PCT)
Prior art keywords
load
switching center
mobile switching
request
mobile terminal
Prior art date
Application number
PCT/CN2010/070331
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English (en)
Chinese (zh)
Other versions
WO2010108396A8 (fr
Inventor
余磊
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2010108396A1 publication Critical patent/WO2010108396A1/fr
Publication of WO2010108396A8 publication Critical patent/WO2010108396A8/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/088—Load balancing or load distribution among core entities

Definitions

  • the present invention relates to the field of communications, and in particular, to a load redistribution system and method based on lu Flex technology. Background technique
  • a traditional mobile switching center for some reason, such as maintenance and repair, needs to be disconnected from the service, which will cause the ongoing communication service on the switch to be interrupted, and within the time controlled by the mobile switching center during the time of exiting the service. Mobile users cannot conduct communication services.
  • 3GPP, 3rd Generation Partnership Project introduced lu Flex technology and load reassignment based on lu Flex technology in its protocol standard 3GPP TS23.236.
  • the lu Flex technology supports the connection of a Radio Access Network Node (RAN) to multiple mobile switching centers.
  • RAN Radio Access Network Node
  • a mobile switching center needs to withdraw from the service for some reason, it can initiate a load redistribution process based on lu Flex technology to ensure the normal implementation of the communication service.
  • the load redistribution process of the mobile switching center can be divided into two phases: Phase 1: The time of Phase 1 is twice the periodic location update period. In Phase 1, the mobile switching center no longer processes the new location update request normally. Instead, the mobile user terminal is controlled to send a location update request to the same RAN by assigning a special temporary mobile subscriber identity (TMSI, Temporary Mobile Subscriber Identification) and a location area identification (LAI) in the location update response message.
  • TMSI temporary mobile subscriber identity
  • LAI location area identification
  • Phase 2 of the other mobile switching connections Phase 2 begins after Phase One, in Phase 2, the Mobile Switching Center does not force the ongoing communication service to be interrupted, but waits for its normal termination. But in the mobile exchange The heart will control the mobile user terminal that is communicating by redistributing the special TMSI. When the new communication service is initiated after the current service ends, it will no longer initiate to the mobile switching center, but to other mobiles connected to the same RAN. The exchange center initiated.
  • the load of the mobile switching center is offloaded, and this load is borne by other mobile switching centers connected to the same RAN without affecting the communication services provided to the users.
  • phase 1 and Phase 2 have a temporal relationship, and Phase 2 must begin after the end of Phase 1.
  • the time it takes to load the redistribution process is the sum of the processing times of Phase 1 and Phase 2.
  • the load redistribution processing method in the 3GPP protocol needs to be used when the switching center needs emergency maintenance, and the load redistribution process is initiated before the service is withdrawn.
  • the time consuming of the load redistribution process may damage the timeliness of maintenance.
  • the main object of the present invention is to provide a load redistribution system and method based on Iu Flex technology, which can reduce the time consumed by the load redistribution process.
  • a load redistribution system includes a mobile terminal, a radio access network node, a mobile switching center, and a network management system, wherein the mobile terminal is connected to a radio access network node, and the radio access network node is connected to the mobile switching center, and moves.
  • the switching center is connected to the network management system, and the mobile switching center controls the mobile terminal by using the radio access network node to provide a communication service to the mobile terminal, where the network management system is configured to initiate a load reassignment request to the mobile switching center;
  • the mobile switching center is configured to receive a load re-allocation request from the network management system and set a timer; Transmitting, by the mobile terminal that initiates the request to the mobile switching center, the first control message during the timing of the preset timer; and simultaneously, the mobile terminal that is performing the communication service on the mobile switching center, waiting for the mobile terminal At the end of the service, sending a second control message to the mobile terminal;
  • the mobile terminal is configured to initiate, according to the received first control message, a request to another mobile switching center that belongs to a radio access network node with the mobile switching center; according to the received second control message, next time When the request is initiated, a request is initiated to other mobile switching centers that belong to a radio access network node with the mobile switching center.
  • the network management system is further configured to send a load re-allocation termination request message to the mobile switching center; and receive a load re-allocation termination response message, indicating that the mobile switching center load re-allocation process has been terminated;
  • the mobile switching center is further configured to receive the load re-allocation termination request message, stop the load re-allocation, and send a load re-allocation termination response message to the network management system.
  • the mobile switching center is further configured to send a load re-allocation complete message to the network management system when the load redistribution process cannot be continued normally, where the load redistribution complete message includes a load redistribution process failure information and a failure cause;
  • the network management system is further configured to receive a load redistribution completion message from the mobile switching center, to indicate that the mobile switching center load redistribution process has failed, and display the failure reason.
  • the preset timer has a timing duration that is twice the periodic location update period.
  • the first control message is a location update response message including a special temporary mobile subscriber identity
  • the first control message is an access response message including a location area identifier
  • the second control message includes a special temporary mobile subscriber identity.
  • a load redistribution method includes the following steps: The network management system sends a load re-allocation request message to the mobile switching center;
  • the mobile switching center receives the load reassignment request and sets a timer.
  • the other mobile switching center of the node initiates a request; at the same time, the mobile terminal that is performing the communication service on the mobile switching center sends a second control message to the mobile terminal when the service of the mobile terminal ends, and the mobile terminal receives the second control message according to the received
  • the second control message, when the next request is initiated, is directed to other mobile switching centers that belong to a radio access network node with the mobile switching center.
  • the preset timer has a timing duration that is twice the periodic location update period.
  • the first control message is a location update response message including a special temporary mobile subscriber identity
  • the first control message is an access response message including a location area identifier
  • the second control message includes a special temporary mobile subscriber identity.
  • the method also includes:
  • the network management system sends a load re-allocation termination request message to the mobile switching center; the mobile switching center receives the load re-allocation termination request message, stops the load re-allocation, and sends a load re-allocation termination response message to the network management system.
  • the method further includes: the network management system displaying that the mobile switching center load redistribution process has been terminated.
  • the method further includes:
  • the mobile switching center sends a load re-allocation complete message to the network management system, where the load re-allocation complete message includes a load redistribution process failure information and a failure reason.
  • the network management system receives the load re-allocation complete message, and the method further includes: the network management system displays that the mobile switching center load redistribution process has failed, and displays a failure reason.
  • the present invention is based on the load redistribution system and method of the Iu Flex technology, in the process of performing load redistribution in the mobile switching center, and simultaneously initiating a request to the mobile switching center within a preset timing duration, and The processing of the mobile terminal that is performing the communication service on the mobile switching center reduces the time consumed by the load redistribution process, thereby ensuring the timeliness of the maintenance of the communication network.
  • FIG. 1 is a schematic diagram of a load redistribution system based on Iu Flex technology of the present invention
  • FIG. 2 is a flow chart of a load redistribution method based on Iu Flex technology of the present invention
  • FIG. 3 is a flow chart of an embodiment of a load redistribution method based on Iu Flex technology of the present invention. detailed description
  • the load redistribution system of the present invention includes a mobile terminal 11, a radio access network node 12, a mobile switching center 13, and a network management system 14. among them,
  • the mobile terminal 11 is connected to the radio access network node 12 via a radio interface, the radio access network node 12 is connected to the mobile switching center 13, and the mobile switching center 13 is connected to the network management system 14.
  • the mobile switching center 13 controls the mobile terminal 11 through the radio access network node 12 to provide communication services to mobile users.
  • One radio access network node 12 can be associated with multiple mobile switching centers 13 Connected.
  • a network management system 14 can be coupled to one or more mobile switching centers 13 for operation and maintenance of the mobile switching center 13. Both the radio access network node 12 and the mobile switching center 13 support the use of Iu Flex technology.
  • the network management system 14 is configured to initiate a load reassignment request to the mobile switching center 13.
  • the mobile switching center 13 is configured to receive a load reassignment request from the network management system, and set a timer, where the timer duration is twice the periodic location update period; and within the preset timing duration, respectively move to
  • the mobile terminal 11 that initiates the location update request and the mobile subscriber access request by the switching center 13 respectively transmits a location update response message and an access response message including special TMSI and LAI information, so that the mobile terminal 11 belongs to the mobile switching center 13
  • the other mobile switching center 13 of a radio access network node initiates a request, where the location update response message and the access response message may be collectively referred to as a first control message; and at the same time, a mobile terminal that is performing communication services on the mobile switching center 13 After the service of the mobile terminal 11 ends, the second control message including the special TMSI information is sent to the mobile terminal 11, so that when the mobile terminal 11 initiates the request, it belongs to the wireless exchange with the mobile switching center 13.
  • the other mobile switching centers 13 of the ingress node initiate.
  • the network management system 14 is further configured to send a load re-allocation termination request message to the mobile switching center 13; and receive a load re-allocation termination response message, indicating that the mobile switching center load re-allocation process has been terminated;
  • the mobile switching center 13 is further configured to receive the load re-allocation termination request message, stop the load re-allocation, and send a load re-allocation termination response message to the network management system 14.
  • the mobile switching center 13 is further configured to send a load re-allocation completion message to the network management system 14 when the load redistribution process cannot be continued normally, and the load re-allocation complete message includes a load re-allocation process failure information and a failure reason;
  • the network management system 14 is further configured to receive the load redistribution completion message from the mobile switching center 13, indicating that the mobile switching center load redistribution process has failed, and display the reason for the failure.
  • 2 is a flow chart of a load redistribution method based on Iu Flex technology of the present invention
  • FIG. 3 is a flow chart of an embodiment of a load redistribution method based on Iu Flex technology of the present invention. The load redistribution method of the present invention will be described in detail below with reference to the flowcharts of FIGS. 2 and 3.
  • Step S1 The network management system sends a load re-allocation request message to the mobile switching center.
  • Step S2 The load redistribution process includes: the mobile switching center receives the load redistribution request, and sets a timer whose timing duration is twice the periodic location update period. Transmitting a location update response message and an access response message including special TMSI and LAI information to the mobile terminal that initiates the location update request and the mobile user access request to the mobile switching center respectively within the preset timing duration, so that the mobile terminal And the other mobile switching center that belongs to one radio access network node initiates a request with the mobile switching center; meanwhile, the mobile terminal that is performing the communication service on the mobile switching center waits for the service of the mobile terminal to end, and sends the mobile terminal to the mobile terminal to include The control message of the special TMSI information causes the mobile terminal to switch to another mobile switching center belonging to one radio access network node with the mobile switching center when the mobile terminal initiates the request.
  • step S2 if the network management system sends a load reassignment termination request message to the mobile switching center, then
  • the mobile switching center receives the load re-allocation termination request message, stops the load re-allocation, and sends a load re-allocation termination response message to the network management system.
  • the network management system receives the load re-allocation termination response message, indicating that the mobile switching center load re-allocation process has terminated.
  • step S2 if the mobile switching center cannot continue the normal load re-allocation process, the load re-allocation complete message is sent to the network management system, and the load re-allocation complete message includes the load redistribution process failure information and the failure reason.
  • the network management system receives the load re-allocation complete message, indicating that the mobile switching center load re-allocation process has failed and displays the reason for the failure.
  • the present invention is based on a load redistribution system and method of the Iu Flex technology.
  • the mobile terminal that initiates the location update request and the mobile user access request to the mobile switching center within the preset timing duration, and the mobile terminal that is performing the communication service on the mobile switching center are simultaneously performed.
  • the processing reduces the time consumed by the load redistribution process, thereby ensuring the timeliness of maintenance of the communication network.

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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 système et un procédé de redistribution de charge basés sur la technologie Iu Flex. Durant le processus de redistribution de charge par un centre de commutation mobile, le système et le procédé de redistribution de charge basés sur la technologie Iu Flex de la présente invention réalisent le traitement d'un terminal mobile qui initie une requête faite au centre de commutation mobile dans le délai préfixé, et celui d'un terminal mobile en train d'effectuer un service de communication du centre de commutation mobile simultanément. Le temps utilisé par le processus de redistribution de charge est réduit, et la maintenance périodique du réseau de communication est assurée.
PCT/CN2010/070331 2009-03-27 2010-01-22 Système et procédé de redistribution de charge WO2010108396A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910106194.2 2009-03-27
CN200910106194A CN101521911A (zh) 2009-03-27 2009-03-27 基于Iu Flex技术的负荷重分配系统和方法

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WO2010108396A1 true WO2010108396A1 (fr) 2010-09-30
WO2010108396A8 WO2010108396A8 (fr) 2011-02-17

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101521911A (zh) * 2009-03-27 2009-09-02 中兴通讯股份有限公司 基于Iu Flex技术的负荷重分配系统和方法
CN109299171B (zh) * 2018-08-13 2021-04-20 南京工业职业技术大学 一种flex客户端支持海量数据长时计算的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1486096A (zh) * 2002-09-23 2004-03-31 华为技术有限公司 支持Iu Flex技术的Iu接口负载控制方法
CN101166354A (zh) * 2006-10-18 2008-04-23 中兴通讯股份有限公司 基于Iu Flex的负荷重分配的系统和方法
US20080123529A1 (en) * 2006-11-23 2008-05-29 Cameo Communications, Inc. Load balancing method for wireless network system
CN101521911A (zh) * 2009-03-27 2009-09-02 中兴通讯股份有限公司 基于Iu Flex技术的负荷重分配系统和方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1486096A (zh) * 2002-09-23 2004-03-31 华为技术有限公司 支持Iu Flex技术的Iu接口负载控制方法
CN101166354A (zh) * 2006-10-18 2008-04-23 中兴通讯股份有限公司 基于Iu Flex的负荷重分配的系统和方法
US20080123529A1 (en) * 2006-11-23 2008-05-29 Cameo Communications, Inc. Load balancing method for wireless network system
CN101521911A (zh) * 2009-03-27 2009-09-02 中兴通讯股份有限公司 基于Iu Flex技术的负荷重分配系统和方法

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WO2010108396A8 (fr) 2011-02-17
CN101521911A (zh) 2009-09-02

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