WO2012152164A1 - Procédé et dispositif de traitement de redirection - Google Patents

Procédé et dispositif de traitement de redirection Download PDF

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Publication number
WO2012152164A1
WO2012152164A1 PCT/CN2012/073827 CN2012073827W WO2012152164A1 WO 2012152164 A1 WO2012152164 A1 WO 2012152164A1 CN 2012073827 W CN2012073827 W CN 2012073827W WO 2012152164 A1 WO2012152164 A1 WO 2012152164A1
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Prior art keywords
network
terminal
service
message
information
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PCT/CN2012/073827
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English (en)
Chinese (zh)
Inventor
和峰
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中兴通讯股份有限公司
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Publication of WO2012152164A1 publication Critical patent/WO2012152164A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections

Definitions

  • the present invention relates to the field of communications, and in particular to a redirection processing method and apparatus.
  • BACKGROUND With the continuous evolution of wireless communication technologies and standards, mobile packet services have been greatly developed. From 2G to IJ 3G and Long Term Evolution (LTE) systems, the transmission rate of wireless network data will be further improved. The data throughput of single terminals is also increasing. As the volume of data traffic expands, the demand for transmission rates and traffic by end users has made existing 2G and 3G network resources increasingly scarce, and the user experience has also deteriorated. How to improve the user experience is an urgent task that operators must consider. On the other hand, in order to provide higher service rates, the market is increasingly expecting to deploy LTE networks.
  • LTE Long Term Evolution
  • FIG. 1 is a schematic diagram of multi-network access according to the related art.
  • the terminal simultaneously accesses multiple networks for data transmission.
  • the wireless network resources available to the terminal can be increased, thereby improving the data throughput rate, improving the user experience, increasing the market appeal to the terminal customer, and fully utilizing the current network resources to reduce the operator's operating cost.
  • the specific state of the network cannot be known due to the network selected when the wireless terminal initiates the service, which may result in load imbalance between multiple networks. If some network load is already too heavy, but the terminal still has to If the network initiates a service, the throughput of a single terminal will be reduced, and the excessive load may cause the network to eventually become paralyzed.
  • a redirection processing method including: determining, by a network element of a service network of a terminal, that some or all services of the terminal in the service network need to be redirected; Initiating a request, where the request is used to indicate that some or all of the services of the terminal in the serving network are redirected to other service networks accessed by the terminal.
  • the request carries network information of other service networks redirected by the terminal to the terminal.
  • the network information comprises one of the following and any combination thereof: access technology (RAT) of other service networks; identification of target cells in other service networks; frequency information of target cells in other service networks; target cells in other service networks Physical cell identity; scrambling code information of the target cell in other service networks; base station identification code in other service networks.
  • the request also carries the service connection information of the operation for performing the redirection.
  • the service connection information comprises: dedicated channel information of the terminal in the service network or radio bearer information of the terminal in the service network.
  • the network element of the serving network initiates a request to the terminal through an access layer message or a non-access stratum message.
  • the network element of the serving network comprises: a radio access network element or a core network element.
  • a redirection processing method including: receiving, by a terminal, a message sent by a service network, where the message is used to indicate that a part or all services of the terminal in the service network are redirected. The terminal redirects part or all of the services of the terminal in the service network to other service networks accessed by the terminal according to the message.
  • a network element of a service network including: a determining module, configured to determine that some or all services of the terminal in the service network need to be redirected; and a sending module, configured to be a terminal Initiating a request, where the request is used to indicate that some or all of the services of the terminal in the serving network are redirected to other service networks accessed by the terminal.
  • the request carries network information that is redirected by the terminal to other service networks accessed by the terminal.
  • the network information includes one of the following and any combination thereof: an access technology RAT of the other serving network; an identifier of a target cell in the other serving network; a frequency of the target cell in the other serving network Information; a physical cell identifier of the target cell in the other serving network; scrambling code information of the target cell in the other serving network; and the base station identifier in the other serving network.
  • the request further carries service connection information for performing the operation of the redirection.
  • the service connection information includes: dedicated channel information of the terminal in the service network or radio bearer information of the terminal in the service network.
  • the network element of the service network includes: a radio access network element or a core network element.
  • a terminal including: a receiving module, configured to receive a message sent by a service network, where the message is used to indicate that part or all of the service of the terminal in the service network is heavy Orientation operation; the redirection module is configured to redirect some or all services of the terminal in the service network to other service networks accessed by the terminal according to the message.
  • the service network is used to determine that some or all services of the terminal in the service network need to be redirected, and a request is sent to the terminal, indicating that the terminal redirects the service to other service networks accessed by the terminal.
  • FIG. 1 is a schematic diagram of multi-network access according to the related art
  • FIG. 2 is a first flowchart of a redirection processing method according to an embodiment of the present invention
  • FIG. 3 is a second flowchart of a redirection processing method according to an embodiment of the present invention
  • 4 is a first structural block diagram of a redirection processing apparatus according to an embodiment of the present invention
  • FIG. 5 is a second structural block diagram of a redirection processing apparatus according to an embodiment of the present invention
  • FIG. 6 is a diagram of a weight according to a preferred embodiment of the present invention.
  • FIG. 7 is a second flowchart of a redirection processing method according to a preferred embodiment of the present invention
  • FIG. 8 is a third flowchart of a redirection processing method according to a preferred embodiment of the present invention.
  • 9 is a fourth flowchart of a redirection processing method according to a preferred embodiment of the present invention
  • FIG. 10 is a fifth flowchart of a redirection processing method according to a preferred embodiment of the present invention.
  • FIG. 2 is a first flowchart of a redirection processing method according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps S202 and S204. .
  • Step S202 The network element of the service network of the terminal determines that some or all services of the terminal in the service network need to be redirected;
  • Step S204 The network element of the service network initiates a request to the terminal, where the request is used to indicate that the terminal is in the Some or all of the services in the service network are redirected to other service networks accessed by the terminal.
  • the network element of the service network determines that some or all services of the terminal in the service network need to be redirected, and sends a request to the terminal, indicating that the terminal redirects the service to other service networks accessed by the terminal, so that The network side dynamically adjusts the service connection of the terminal between multiple networks according to the environment in which the terminal is located.
  • the service network may redirect some or all of the services of the terminal according to the system configuration, the network deployment policy of the operator, and the user requirements. For example, if the service network element determines that one of the following is satisfied, Some or all of the services of the terminal in the service network need to be redirected: Case 1: The service network load size exceeds the first predetermined value. Case 2: The wireless signal quality of the terminal is reduced to a second predetermined value. Case 3: The quality of service (Qos) of some or all of the services is lower than the third predetermined value.
  • Situation 4 Users need to reduce their business charges. For case one, when the service network load (including the radio access network load or the core network load) exceeds a predetermined value, and some or all services are redirected, the load of the service network can be reduced; The quality of the wireless signal is reduced to a predetermined value, and some or all of the services are redirected to provide the wireless signal quality of the terminal. For the third case, when the Qos of the service is lower than the predetermined value, the service is redirected, and the service can be improved. Service quality; For case 4, due to multi-network operation, the tariffs of each network may be different, users can turn services to service networks with low tariffs, thereby reducing user overhead and improving user experience.
  • the request carries network information redirected by the terminal to other service networks accessed by the terminal.
  • the network information includes one of the following and any combination thereof: an access technology (Radio Access Technology, abbreviated as RAT) of the other service network; an identifier of the target cell in the other service network; Frequency information of the target cell in the network; physical cell identifier of the target cell in the other serving network; scrambling code information of the target cell in other serving networks; the base station identification code in other serving networks.
  • RAT Radio Access Technology
  • the request also carries service connection information for performing the operation of the redirection.
  • the terminal has dedicated channel information in the serving network or radio bearer information of the terminal in the serving network.
  • the network element of the serving network comprises: a radio access network element or a core network element.
  • the radio access network element includes a network element such as e B
  • the core network element includes, for example, a Serving GPRS Supporting Node (SGSN) or a Mobile Management Entity (MME).
  • SGSN Serving GPRS Supporting Node
  • MME Mobile Management Entity
  • the network element of the service network initiates a request to the terminal through an Access Stratum (AS) message or a Non-Access Stratum (NAS) message.
  • AS Access Stratum
  • NAS Non-Access Stratum
  • FIG. 3 is a second flowchart of a redirection processing method according to an embodiment of the present invention.
  • the method includes the following steps S302 and S304.
  • Step S302 The terminal receives the message sent by the service network, where the message is used to indicate that the terminal performs a redirection operation on part or all of the service in the service network.
  • Step S304 The terminal, according to the message, the part of the terminal in the service network or All services are redirected to other service networks accessed by the terminal. Through the above steps, the terminal redirects the service to other service networks accessed by the terminal according to the received message of the service network.
  • a storage medium is further provided, and the foregoing redirection processing software is stored in the storage medium, and the storage medium includes, but is not limited to, an optical disc, a floppy disk, a hard disk, a rewritable memory, and the like.
  • the embodiment of the present invention further provides a redirection processing device, where the redirection processing device can be used to implement the redirection processing method and the preferred implementation manner, which have been described, and will not be described again.
  • the modules involved in the device are described. As used hereinafter, the term "module" may implement a combination of software and/or hardware of a predetermined function.
  • FIG. 4 is a first structural block diagram of a redirection processing apparatus according to an embodiment of the present invention.
  • the apparatus is applied to a service network of a terminal.
  • the apparatus includes: a determining module 42 and a sending module 44. The structure is described in detail.
  • the determining module 42 is configured to determine that some or all services of the terminal in the service network need to be redirected;
  • the sending module 44 is connected to the determining module 42 and configured to determine, in the determining module 42, that some or all services of the terminal in the serving network need to be redirected, and initiate a request to the terminal, where the request is used to indicate that the terminal is in the serving network. Some or all of the services are redirected to other service networks accessed by the terminal.
  • FIG. 5 is a second structural block diagram of a redirection processing apparatus according to an embodiment of the present invention. The apparatus may be applied to a terminal. As shown in FIG. 5, the apparatus includes: a receiving module 52 and a redirection module 54. Detailed instructions are given.
  • the receiving module 52 is configured to receive a message sent by the service network, where the message is used to indicate that part or all of the service in the service network is redirected; the redirecting module 54 is connected to the receiving module 52, and is configured to receive according to the receiving The message received by module 52 redirects some or all of the services of the terminal in the serving network to other service networks accessed by the terminal.
  • the preferred embodiment of the present invention provides a redirection processing method.
  • the multi-network access technology based on the method in this embodiment may adopt the architecture shown in FIG.
  • a network of multiple radio access technologies can access the same core network gateway.
  • the gateway divides the downlink data of the core network gateway into multiple sub-data streams and sends them to the wireless terminal users through different wireless communication networks, for example: through an LTE network, or a universal mobile communication system (Universal Mobile Telecommunication System (UMTS) network, or Global System for Mobile Communications (GSM) network; etc.
  • wireless terminal users can also access one or more of multiple networks.
  • the network sends uplink data.
  • the core network gateway here can reuse the data gateway in the existing network, such as a Packet Data Network Gateway (P-GW) or a Serving Gateway (S-GW) in the LTE network. , or the Gateway GPRS Support Node (GGSN) of the UMTS network.
  • the redirection processing method provided in this embodiment includes the following steps S1 and S2.
  • Step SI The serving network element of the terminal sends a connection redirection message to the terminal, where the mobile terminal carries the target network information that needs to be redirected.
  • Step S2 After receiving the terminal, the terminal re-initiates the connection on the target network according to the redirection indication information.
  • the serving network element of the terminal may be a different network element node in different radio access technologies
  • an LTE network may refer to an evolved base station (Evolved NodeB, referred to as e B) or a mobility management entity ( Mobility Management Entity (MME) and other network elements; in the UMTS network, it can be referred to as a Radio Network Controller (RNC) or a Serving GPRS Support Node (SGSN) or a Mobile Switching Center (Mobile Switching).
  • RNC Radio Network Controller
  • SGSN Serving GPRS Support Node
  • Mobile Switching Mobile Switching
  • a network element such as a base station controller (BSC), an SGSN, or an MSC.
  • the service network element initiates the triggering condition of the redirection process, and may be set according to the needs of the system or the needs of the user, for example: the network load is too high, or the quality of the radio signal where the terminal is located is deteriorated, or the service There are many reasons for QoS needs, or user billing needs.
  • the connection redirection message sent by the service network element of the terminal to the terminal may be an Access Stratum (AS) message or a Non-Access Stratum (NAS) message.
  • the message can be an existing AS message or a NAS message, or it can be a new AS message or a NAS message.
  • the foregoing terminal needs to redirect the target network information, which may include one or more of the following: a target network access technology (RAT); identification information of the target cell, for example: a cell identifier (Cell lD, or Cell) Global ID); frequency information of the target cell; physical cell identifier (PCI) of the target cell; scrambling code information (PSC) of the target cell; base station identification code (BSIC), preferably, the above connection redirection
  • the message may further include service connection information that needs to be redirected, and the service connection may include one or more of the following: dedicated channel information of the terminal in the current serving cell; radio bearer information of the terminal in the current serving cell.
  • the terminal may initiate the indicated service connection in the indicated target network.
  • connection redirection of user equipment in different standard networks such as UMTS, LTE, and GSM can be implemented.
  • the network side can dynamically migrate some or all of the UE's connections in the current network to other networks, thereby avoiding problems such as uneven network load or waste of network resources, and degraded service quality.
  • Preferred embodiment two This embodiment provides a redirection processing method.
  • the UE is in an idle state and normally resides in the LTE network, and the access network element performs the UE service connection by using an access layer message (AS message). Redirection.
  • AS message access layer message
  • Step S602 The UE initiates a Radio Resource Control (RRC) Request to Connect (RRC Connection Request) procedure to the eNB, requesting to establish a service connection.
  • Step S604 After receiving the request, the eNB determines that the current network is overloaded, and determines to redirect the UE to the UMTS network. The eNB sends an RRC Connection Reject message (RRC Connection Reject) to the UE, and the RRC Connection Reject message carries the connection redirection information, where the connection redirection information includes the frequency point fl of the UMTS cell.
  • RRC Radio Resource Control
  • RRC Connection Reject RRC Connection Reject
  • Step S606 The eNB sends an RRC connection rejection to the UE.
  • Step S608 After receiving the reject message, the UE initiates an RRC connection establishment process on the UMTS cell of the specified fl frequency according to the connection redirection information, and establishes a new service connection. It should be noted that the foregoing redirection process may also be initiated by the core network. For example, if the MME receives the service establishment request of the UE, the MME may also instruct the UE to redirect to other networks through a NAS message, such as a downlink NAS direct transmission message.
  • a NAS message such as a downlink NAS direct transmission message.
  • the foregoing redirection process may also occur between any two wireless networks, for example: between the GSM network and the LTE network, or between the GSM network and the UMTS network.
  • Preferred Embodiment 3 This embodiment provides a redirection processing method.
  • the UE is in an idle state, normally resides in the UMTS network, and the core network element passes the non-access stratum (NAS) message.
  • the UE is instructed to perform redirection.
  • FIG. 7 is a second flowchart of a redirection processing method according to a preferred embodiment of the present invention. As shown in FIG. 7, the method includes the following steps S702 to S714.
  • Step S702 The UE initiates an RRC Connection Request procedure to the RNC, requesting to establish a service connection.
  • Step S704 After receiving the RNC, the RNC grants the UE access, and sends an RRC Connection Setup (RRC Connection Setup) to the UE.
  • Step S706 After the UE successfully establishes the RRC connection, the RRC Connection Setup Complete message is sent to the RNC.
  • Step S708 The UE initiates a NAS message, such as a Service Request message, to the core network SGSN through the RNC, requesting to establish a service.
  • Step S710 After receiving the request, the SGSN determines that the current core network is overloaded, and decides to redirect the UE to the LTE network.
  • Step S712 The SGSN sends a NAS message to the UE, for example, a downlink direct transmission message, where the message carries the connection redirection information, where the connection redirection information is a target network type indication information, which is used to indicate that the redirected target network is an LTE network.
  • Step S714 After receiving the redirection information, the UE releases the RRC connection in the UMTS.
  • the LTE cell is reselected, an RRC connection setup is initiated, and a service connection is requested. It should be noted that the foregoing process may also occur between any two wireless networks, for example, between a GSM network and an LTE network, or between a GSM network and a UMTS network.
  • the present embodiment provides a redirection processing method.
  • the UE is in a connected state on the LTE network, and the UE has several service connection bearers in the LTE network, for example, bearer 1, bearer 2 And the bearer 3, which carries data of three services respectively, and the access network element instructs the UE to perform partial service redirection through the AS layer message
  • FIG. 8 is a third flowchart of the redirection processing method according to the preferred embodiment of the present invention.
  • the method includes the following steps S802 to S814.
  • Step S802 The UE and the MME are in a service connection state.
  • Step S804 The UE reports the measurement result of the current serving cell and the adjacent serving cell to the e B by using the measurement report message.
  • Step S806 The eB finds that the signal quality of the UE in the current network is deteriorated by the measurement report of the UE, and the service network does not meet the service quality (such as QoS) requirement of the service carried by the bearer 3, but the UE is adjacent to the GSM cell.
  • the measurement report indicates that the signal quality of the adjacent GSM cell satisfies the condition, and the eNB decides to transfer part of the service connection of the current UE, that is, the bearer 3, to the GSM cell. Therefore, the eNB sends an RRC Connection Reconfiguration message to the UE, where the eNB transmits Redirect indication information.
  • the redirection indication information includes frequency point information fl of the target GSM cell, an identity code BSIC of the base station, and service connection information (such as radio data bearer identification information, etc.) of the bearer 3 that needs to be redirected.
  • Step S808 After receiving the reconfiguration message, the UE releases the service connection of the bearer 3 in the LTE cell indicated in the message, and replies to the e B RRC Connection Reconfiguration Complete message.
  • Step S810 The UE sends an RRC connection reconfiguration complete to the eNB.
  • Step S812 The UE re-establishes the RRC connection establishment in the designated GSM cell according to the redirection indication information, and requests to establish the originally released bearer 3 service.
  • Step S814 The UE establishes a service connection.
  • the eNB may also notify the UE to perform connection redirection through other messages, such as an RRC connection release message or other new messages.
  • the above process may also be initiated by a core network (MME).
  • MME core network
  • the core network may decide to initiate a redirection process for some or all of the UE service connections according to different redirection policies.
  • the redirection initiation mode may be triggered by the core network, and the eNB may notify the UE by using the AS layer message.
  • the core network may directly instruct the UE to perform redirection through the NAS message.
  • the above process may also occur between any two other networks, such as between a UMTS and an LTE network, or between a GSM and a UMTS network.
  • Preferred Embodiment 5 This embodiment provides a redirection processing method.
  • the UE is in a connected state at the same time in the UMTS network and the GSM network, that is, in a multi-network connection state, and the UE has each of the two networks.
  • the UMTS network core network triggers the access network to send a redirect message to indicate that the UE performs service connection redirection.
  • Step S902 The UE performs normal service in the UMTS network, but the core network no longer provides services for the UE because of charging requirements or because of load balancing requirements, and hopes that the UE can redirect the corresponding bearer to the GSM network, so the UMTS network
  • the SGSN in the middle sends an Iu release (Iu release) message to the RNS, and may carry the redirection indication information to distinguish it from the general service release message.
  • Iu release Iu release
  • Step S904 After receiving the message, the RSN sends an RRC Connection Release message (RRC Connection Release) message to the UE, where the redirection indication information is carried, indicating that the UE can be redirected to the GSM network.
  • Step S906 After receiving the indication message, the UE retransmits the service corresponding to bearer 1 and bearer 2 in the connected GSM network.
  • Step S908 The UE releases the connection in the UMTS network, and sends an RRC Connection Release Complete message (RRC Connection Release Complete) to the RNS, indicating that the service has been successfully released, and the redirection is successfully completed.
  • RRC Connection Release RRC Connection Release
  • FIG. 10 is a fifth flowchart of a redirection processing method according to a preferred embodiment of the present invention. As shown in FIG. 10, the method includes the following processes S1002 to S1010.
  • Step S1002 The SGSN determines that the current SGSN load is too high during the service, and therefore determines that part of the service connection of the UE is redirected to the LTE network.
  • the SGSN sends a bearer assignment request (RAB assignment request) message to the RNS, where the message carries the connection bearer identifier that needs to be redirected, the identifier of the target LTE network (such as the global identity CGI of the cell), and the like.
  • Step S1004 After receiving the RNS, send an RRC Connection Reconfiguration message (RRC Connection Reconfiguration) message to the UE.
  • RRC Connection Reconfiguration RRC Connection Reconfiguration
  • the message carries the identification information (such as CGI, or corresponding PCI and frequency point information) of the redirected LTE cell, and the bearer identifier that needs to be redirected.
  • Step S1006 The UE re-initiates the connection in the LTE network according to the redirection information, and initiates the service carried by the redirected connection bearer.
  • Step S1008 The UE releases the connection bearer in the UMTS network, and replies to the UMTS network RRC connection reconfiguration complete message, indicating that the RNS connection redirection is successful.
  • Step S1010 After receiving the RNS, the RNS sends a RAB Assignment Response message to the SGSN, indicating that the bearer has been redirected.
  • the core network may also notify the UE of the relevant redirection indication information directly through the NAS layer message.
  • the above process may also occur between any two other networks, such as between an LTE network and a GSM network, or between a UMTS network and a GSM network.
  • the method in the foregoing specific embodiment may be applicable to a bearer migration process between any two networks, and specific message names used in different networks may be different.
  • the foregoing embodiment provides a redirection processing method and apparatus, where the service network determines that some or all services of the terminal in the service network need to be redirected, and sends a request to the terminal, instructing the terminal to redirect the service to the Other service networks accessed by the terminal.
  • the terminal data service rate can be effectively improved, and the mobility and dynamic load balancing of the terminal between multiple networks can be realized. Improve the user experience. At the same time, it can also make full use of existing network resources to avoid waste, and reduce the operator's network operation pressure and operating costs. In addition, sufficient backward compatibility can be ensured, and the smooth evolution of the wireless access technology is ensured. It should be noted that these technical effects are not all of the above embodiments, and some technical effects are some preferred embodiments. Can be obtained.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Abstract

L'invention porte sur un procédé et un dispositif de traitement de redirection. Le procédé comprend les opérations suivantes : un réseau de desserte d'un terminal détermine qu'une partie ou l'ensemble des services du terminal dans le réseau de desserte ont besoin d'être redirigés ; et le réseau de desserte initie une requête auprès d'un terminal, la requête étant utilisée pour indiquer que la partie ou l'ensemble des services du terminal dans le réseau de desserte sont redirigés vers d'autres réseaux de desserte auxquels accède le terminal. Par l'intermédiaire de la présente invention, un débit de service de données du terminal est amélioré.
PCT/CN2012/073827 2011-07-21 2012-04-11 Procédé et dispositif de traitement de redirection WO2012152164A1 (fr)

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