WO2008077314A1 - Procédé de négociation sur des ressources; terminal, réseau d'accès et système de communication correspondants - Google Patents

Procédé de négociation sur des ressources; terminal, réseau d'accès et système de communication correspondants Download PDF

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Publication number
WO2008077314A1
WO2008077314A1 PCT/CN2007/003729 CN2007003729W WO2008077314A1 WO 2008077314 A1 WO2008077314 A1 WO 2008077314A1 CN 2007003729 W CN2007003729 W CN 2007003729W WO 2008077314 A1 WO2008077314 A1 WO 2008077314A1
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WIPO (PCT)
Prior art keywords
access network
resource information
query
information
terminal device
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PCT/CN2007/003729
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English (en)
Chinese (zh)
Inventor
Jing Liu
Yan Peng
Bin Xia
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008077314A1 publication Critical patent/WO2008077314A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology

Definitions

  • the present invention relates to the field of communications, and in particular, to a technology for performing resource negotiation. Background technique
  • the IEEE 802.21 working group regulates the requirements for switching between different standards and the corresponding switching mechanisms.
  • the purpose of the IEEE 802.21 standard development is to provide a handover process between different media types, to enhance the user's experience of the mobile device by supporting switching between different media types, and the goal is to finally enable the mobile device to automatically select when roaming between networks.
  • terminals and networks such as base stations, PoA (Point of Attachment)
  • PoA Point of Attachment
  • Today's mobile communication networks have evolved into micro-cellular (IEEE 802.11) and macro-cellular (3GPP, 3GPP2, IEEE 802.16), which may overlap each other, and handover may occur between different types of networks. Handovers are typically based on measurements and triggers at the end of the link layer, including measurements such as signal quality, transmission errors, and service types.
  • the IEEE 802.21 media-independent handover solution introduces a framework that ensures continuity of service switching between different media types.
  • a set of handovers between network elements is required. Feature set. Configure these switching functions in the mobility management protocol stack of the network element.
  • the set forms a new protocol functional layer called the MIHF (Media Independent Handover Function) module.
  • the location and key services of the MIHF module in the mobility management protocol stack are shown in Figure 1.
  • the MIHF module is logically defined as a thin layer in the mobility management protocol stack of the terminal and the network, which helps in the handover decision process. Function;
  • the MIHF module provides some necessary information for the upper layer to make handover decisions and how to effectively make handover decisions.
  • the upper layer performs handover decisions and link selection based on the input and context of the MIHF module, thereby achieving seamless handover;
  • the Media Independent Handover (MIH) functional entity mainly provides the following services to help the user's switching process:
  • MIES Media Independent Event Service
  • MIH Media Independent Command Service
  • MIS Media Independent Information Service
  • the MIH User module is a mobility management and application protocol layer belonging to Layer 3, including MIPv4/v6 (Mobile Internet Protocol), SIP (Session Initiated Protocol) and other mobility management protocols and handovers. Strategy, transfer and application, etc.
  • MIPv4/v6 Mobile Internet Protocol
  • SIP Session Initiated Protocol
  • the MIHF module is a media-independent switching protocol layer that provides command services, event services, and information services.
  • link layers for various access networks, such as link layers such as 802.3, 802.11, 802.16, and 3GPP.
  • the main function of the MIHF module is the media-independent switching function provided by the event service, the command service and the information service. This independence is achieved by providing a unified interface to the upper layer through the lower layer protocol in the mobility management protocol stack, so that the upper layer The processing of the protocol does not depend on the specific characteristics and characteristics of the terminal and the wireless network.
  • the MIH user module and the local MHF module interact with each other through MH_SAP (Service Access Point) primitives, including events, commands, and information. Primitive.
  • MH_SAP Service Access Point
  • the MIHF messages are exchanged between the local and remote peer MIHF modules.
  • the terminal and the network side need to negotiate resources before the handover decision, especially according to the switched device or user.
  • Figure 2 depicts the communication flow between two peer MIH user modules, where 1, 3, 4, and 6 are the four primitives that interact between the local upper and lower layers, and 2, 5 are between the two peer MIHF modules. A pair of messages that interact. Through the interaction of the above primitives and messages, the process of switching preparation, decision and execution of the terminal and the network is triggered.
  • the four primitives and a pair of messages shown in Figure 2 are:
  • Primitive 1 is a media independent handover candidate access network query request
  • the media independent handover candidate access network query request is MIH_MN_HO_Candidate_Query.request; when the network side triggers media independent handover, the media independent handover candidate access network query request is MIH_Net_HO_Candidate — Query.request, the parameters defined by the two primitives are the same.
  • the primitive definition of the command contains some parameters for identification, such as: Sourceldentifier, Destinationldentifier, CurrentLinkldentifier, etc., mainly including two parameters QueryResourceList (query)
  • the resource list) and QueryResourceListFlag query resource list tag
  • Switching can be triggered either by the terminal or by the service access network.
  • the terminal can query the candidate access network for the required resources by using the QueryResourceList parameter.
  • the PoS of the service access network uses the QueryResourceListFlag parameter to indicate whether the terminal needs to be provided.
  • the primitive corresponds to the message 2, and the message 2 is the media-independent handover candidate access network query request message, but currently, only the media-independent handover candidate access network query request is defined in the message.
  • Some parameters included in the language including SuggestedNewLinkldentifier, SuggestedMACNewPoAIdentifier (Media Access Control Address of PoA of the new network), HandoverMode (switch mode) and OldLinkAction (behavior of the old link).
  • primitive 3 is a media independent handover candidate access network query indication
  • the media independent handover candidate access network query indication is MIH_MN_HO_Candidate_Quer. indication; when the network side triggers the media independent handover, the media independent handover candidate access network query indication is MIH_Net_HO_Candidate_Quer. indication, the two The parameters defined by the primitive are the same.
  • the command is used to notify the local user module that the handover candidate access network query request message sent by the peer MIHF module has been received.
  • the primitive definition of the command is basically the same as the media independent handover candidate access network query request primitive parameter, but does not include the QueiyResourceList parameter.
  • Primitive 4 is a media independent handover candidate access network query response
  • the media independent handover candidate access network query response is: H—MN—HO—Candidate— Query, response; when the network side triggers the media independent handover, the media independent handover candidate access network query
  • the response is MIH—Net_HO—Candidate_Quei . response, the parameters defined by the two primitives are the same.
  • This command is used to respond to the media independent handover candidate access network query request command.
  • the primitive definition of the command contains some parameters for identification (such as Sourceldentifier, Destinationldentifier, CurrentLinkldentifier, etc.), and mainly includes two parameters QueryResourceList and AvailableResourceList (the actual available resource list), where the actual available resource list is used to represent Actual available resource information collected from each candidate access network.
  • the primitive corresponds to message 5, and message 5 is a media-independent handover candidate access network query response message, but the message only defines some parameters included in the media-independent handover candidate access network query response primitive, including HandoverAck (switch mode) ), PreferredLinkldentifier (Identification of the new link), PreferredPoAIdentifier (identification of the new network PoA), and ErrorCode (error reason).
  • HandoverAck switch mode
  • PreferredLinkldentifier Identification of the new link
  • PreferredPoAIdentifier identity of the new network PoA
  • ErrorCode error reason
  • Primitive 6 is a media independent handover candidate access network query confirmation.
  • the media independent handover candidate access network query is confirmed as
  • the command is used to notify the local MIH user module that the switch candidate access network query response message sent by the peer MIHF module has been received.
  • the primitive definition of the command is basically the same as the media independent handover candidate access network query response primitive parameter, but does not include the QueryResourceList parameter.
  • the two peer MIH user modules cannot negotiate the resource query request, and thus cannot complete the interaction between the query resource information and the actual available resource list information.
  • the present invention provides a method for performing resource negotiation, a terminal, an access network, and a communication system for improving a resource negotiation process in media independent handover.
  • a specific embodiment of the present invention provides a method for performing resource negotiation, including:
  • the terminal device sends the query resource information to the corresponding service access network in the media independent handover.
  • the service access network requests and obtains actual available resource information of the candidate access network according to the query resource information.
  • a specific embodiment of the present invention further provides a terminal device, where the terminal device includes a media independent switching MIH user module and a media independent switching function MIHF module, where:
  • the MIH user module sends query resource information to the MIHF module in media independent handover;
  • the MIHF module sends the query resource information to a corresponding service access network.
  • the embodiment of the present invention further provides an access network, where the access network includes a media independent switching MIH user module and a media independent switching function MIHF module, where:
  • the MIHF module receives the query resource information sent by the terminal device, and sends the query resource information to the MIH user module.
  • the MIH user module requests and obtains actual available resource information of the candidate access network according to the query resource information.
  • the embodiment of the present invention further provides a communication system, where the system includes: a terminal device, configured to send query resource information in media independent handover;
  • An access network configured to connect the terminal device to a network, where:
  • the candidate access network transmits actual available resource information to the service access network in accordance with the request.
  • the terminal device sends the query resource information to the corresponding service access network in the media independent handover; the service access network requests and obtains the actual available resource information of the candidate access network according to the query resource information.
  • the technical solution of the present invention can prevent the two peers from performing normal resource negotiation during the media independent switching process, so that the entire switching process can be performed normally.
  • DRAWINGS 1 is a schematic diagram of a location and a key service of a MIHF module in a mobility management protocol stack in the prior art
  • Figure 2 is a schematic diagram of the communication process between two peer MIH user modules
  • FIG. 3 is a flowchart of negotiating resources in a media-independent handover process according to Embodiment 1 of the present invention
  • FIG. 4 is a flowchart of negotiating resources in a media-independent handover process according to Embodiment 2 of the present invention
  • Figure 6 is a block diagram of a communication system in one embodiment of the present invention.
  • the terminal device sends the query resource information to the corresponding service access network in the medium-independent handover; the service access network requests the candidate access network according to the query resource information, and obtains the actual availability of the candidate access network.
  • Source information the information that specifies the resource for the candidate access network.
  • the handover is triggered by the terminal, and the handover decision is made by the terminal.
  • the process of negotiating resources in the media independent handover process is as shown in FIG. 3, and includes the following steps:
  • Step S101 The MIH user module of the terminal sends a media independent handover candidate access network query request primitive carrying the query resource information to the MIHF module of the terminal;
  • Step S102 After receiving the primitive, the MIHF module of the terminal sends the query resource information to the peer MIHF module, that is, the MIHF module of the service access network, by using the corresponding media independent handover candidate access network query request message;
  • the parameter of the query resource information is not included in the existing media-independent candidate access network query request message to carry the query resource information. Therefore, in this embodiment, the media independent handover candidate access network query request message is required.
  • the parameter of the query resource information is used to carry the query resource information to ensure the smooth progress of the resource negotiation process.
  • Step S103 After receiving the message, the MIHF module of the service access network extracts the query resource information and reports the query resource information to the MIH user of the service access network by using the media independent handover candidate access network query indication primitive.
  • the MIH user module of the service access network needs to trigger the request for obtaining the actual available resource information to each candidate access network
  • the MIH user module of the service access network should know the query resource information, and thus to each candidate access network. Acquiring the actual available resource information corresponding to the query resource information, in this embodiment, querying, by the media independent handover candidate access network, a parameter indicating the primitive definition query resource information, which is used to carry the query resource information, so that the service access network
  • the MIH user module can obtain the query resource information, so that the query resource information can be sent to the candidate access network.
  • Step S104 The MIH user module of the service access network requests the actual available resource information of the candidate access network from each candidate access network through the MIHF module of the service access network according to the received query resource information.
  • Step S105 the candidate access network returns the actual available information to the MIHF module of the service access network, and reports the actual available resource information to the MIH user module of the service access network through the MIHF module of the service access network;
  • Step S106 The MIH user module of the service access network queries the response primitive through the media independent handover candidate access network, and the actual available resource information obtained from each candidate access network and the actual available resource information correspond to the identifier of the candidate access network.
  • the information is sent to the HF module of the service access network;
  • Step S107 after receiving the media independent handover candidate access network query response primitive, the MHF module of the service access network queries the response primitive through the media independent handover candidate access network Corresponding media-independent handover candidate access network query response message, and returning the actual available resource information and the ID (identification information) of the candidate access network corresponding to the actual available resource information to the MIHF module of the terminal; in the prior art, the media The irrelevant handover candidate access network query response message and the actual available resource information parameter carried in the primitive do not correspond to the candidate access network to which it belongs.
  • the terminal In the case that the handover decision is required by the terminal, the terminal only knows the actual available resource information. I don’t know that the candidate access network to which it belongs is not available. It's used to make switching decisions. Therefore, in this embodiment, the actual available resource information may be associated with the corresponding candidate access network in the MIHF module of the serving access network; and the associated actual information is carried in the media independent handover candidate access network query message.
  • the available resource information and the actual available resource information correspond to the identification information of the candidate access network, and the terminal can use the available resource information and the actual available resource information corresponding to the identification information of the candidate access network to formulate a handover decision.
  • Step S108 The MIHF module of the terminal queries the confirmation primitive by the media-independent handover candidate access network, and reports the actual available resource information and the identifier information of the candidate available access network to the MIH user module of the terminal for The terminal MIH User Module is used when making handover decisions.
  • the handover is triggered by the terminal, and the handover decision is made by the network side.
  • the process of negotiating resources in the MIH process is as shown in FIG. 4, and includes the following steps:
  • Step S201 The MIH user module of the terminal sends a media independent handover candidate access network query request primitive carrying the query resource information to the MIHF module of the terminal;
  • Step S202 After receiving the media independent handover candidate access network query request primitive sent by the MIH user module of the terminal, the MIHF module of the terminal sends the query resource information to the pair by using the corresponding media independent handover candidate access network query request message.
  • Terminal HF module After receiving the media independent handover candidate access network query request primitive sent by the MIH user module of the terminal, the MIHF module of the terminal sends the query resource information to the pair by using the corresponding media independent handover candidate access network query request message.
  • Step S203 After receiving the media independent handover candidate access network query request message, the MHF module of the service access network extracts the query resource information and reports the query resource information to the media independent handover candidate access network query indication primitive. Serving the MIH user module of the access network; Step S204, the MIH user module of the service access network requests the actual available resources of the candidate access network to each candidate access network through the MHF module of the service access network according to the received query resource information.
  • Step S205 the candidate access network returns the actual available letter to the MIHF module of the service access network. And transmitting the actual available resource information to the H user module of the service access network through the MIHF module of the service access network, and the MIH user module of the service access network is used when making the handover decision;
  • Step S206 The MIH user module of the service access network sends the media independent handover candidate access network query response primitive to the MIHF module of the service access network;
  • the media independent handover candidate access network query response primitive may optionally carry the actual available resource information obtained from each candidate access network and the actual available resource information corresponding to the identifier of the candidate access network.
  • Step S207 after receiving the media independent handover candidate access network query response primitive sent by the MIH user module of the service access network, the MIHF module of the service access network returns the media independent handover candidate access network query response message to the terminal.
  • the media-independent handover candidate access network query response message may optionally carry the actual available resource information and the actual available resource information corresponding to the identifier of the candidate access network.
  • Step S208 The MIHF module of the terminal reports the media independent handover candidate access network query confirmation primitive to the MIH user module of the terminal.
  • the media-independent handover candidate access network query confirmation primitive optionally carries the actual available resource information and the actual available resource information corresponds to the identifier of the candidate access network.
  • the handover is triggered by the network side, and the handover decision is made by the network side.
  • the process of negotiating resources in the MIH process is as shown in FIG. 5, and includes the following steps:
  • Step S301 The MIH user module of the service access network sends a media independent handover candidate access network query request primitive to the MHF module of the service access network according to whether the terminal needs to provide the query resource information, and the MIH candidate access network query request original
  • the language carries the corresponding query resource tag information; in this step, the H user module of the service access network may according to whether the terminal exists locally Query resource information to determine whether the terminal needs to provide query resource information.
  • Step S302 The MIHF module of the service access network sends a media no-switch handover candidate access network query request message to the MIHF module of the terminal, where the MIH candidate access network query request message carries the query resource tag information;
  • the query resource tag parameter is not defined in the media independent handover candidate access network query request message. Therefore, in this embodiment, the query resource tag parameter needs to be defined for the media independent handover candidate access network query request message. To carry the query resource tag information to ensure the smooth progress of the resource negotiation process.
  • Step S303 after receiving the message, the MIHF module of the terminal extracts the query resource tag information, and queries the MIH user module that the indication primitive is reported to the terminal through the media independent handover candidate access network;
  • Step S304 the MIH user module of the terminal determines whether the query resource tag information needs to provide the query resource information by the terminal, and if yes, carries the query resource information in the media-independent handover candidate access network query response primitive, and sends the MIHF module to the terminal. Otherwise, the query resource information does not need to be carried in the media independent handover candidate access network query response primitive of the MIHF module sent to the terminal;
  • Step S305 the MIHF module of the terminal sends the media independent handover candidate access network query response message to the MIHF module of the service access network;
  • the media-independent handover candidate access network query response primitive carries the query resource information
  • the media-independent handover candidate access network response message should also carry the query resource information, otherwise the query resource information does not need to be carried.
  • the parameter of the query resource information needs to be defined for the media-independent handover candidate access network query response message. , used to carry query resource information to ensure the smooth progress of the resource negotiation process.
  • Step S306 the MHF module of the service access network sends a media independent handover candidate access network query confirmation primitive to the MIH user module of the service access network; If the media-independent handover candidate access network query response message carries the query resource information, the media-independent handover candidate access network query confirmation primitive should also carry the query resource information, otherwise the query resource information does not need to be carried.
  • the media-independent handover candidate access network confirms that the parameter of the query resource information is not defined in the primitive, and cannot carry the query resource information. Therefore, in this embodiment, the media-independent handover candidate access network needs to be queried. Confirm the parameters of the primitive definition query resource information to ensure the correct negotiation process.
  • Step S307 When receiving the media-independent handover candidate access network query confirmation primitive, the MIH user module of the service access network uses the query resource information carried in the service or the query resource information locally saved by the service access network to access the service through the service.
  • the MHF module of the network requests the actual available resource information of the candidate access network to each candidate access network;
  • Step S308 the candidate access network returns the actual available resource information to the MIHF module of the service access network, and reports the actual available resource information to the MIH user module of the service access network through the MIHF module of the service access network for service access.
  • the MIH User Module entering the network is used when making handover decisions.
  • the handover is triggered by the network side, and the handover decision is made by the terminal.
  • the process of triggering the handover from the serving access network to the serving access network to obtain the actual available resource information of the candidate access network is the same as that in the third embodiment.
  • the service access network obtains the actual available resource information of the candidate access network
  • the actual available resource information and the identifier of the actual available resource information corresponding to the candidate access network are sent to the MIH user module of the terminal for the terminal MH user.
  • the module is used when making switching decisions.
  • the query resource information and the actual available resource information carried in the primitive and the message may be in the form of a resource list or a link QoS (Quality of Service) indicator.
  • a terminal device in an embodiment of the present invention includes an MIH user module and an MIHF module, wherein: The MIH user module sends the query resource information to the MIHF module in the media independent handover;
  • the MIHF module sends the query resource information to the corresponding service access network.
  • the MIHF module can receive the query resource tag information sent by the service access network, and send the query resource tag information to the MIH user module, where the query resource tag information indicates whether the terminal device needs to provide the query resource information;
  • the MIH user module determines that the query resource information needs to be provided according to the tag information, the MIH user module sends the query resource information to the service access network through the MIHF module.
  • the MIHF module can receive the actual available resource information sent by the service access network and the identification information of the candidate access network corresponding to the actual available resource information, and send the identifier information to the MIH user module.
  • An access network in an embodiment of the present invention includes an MIH subscriber module and a MIHF module, wherein:
  • the MIHF module receives the query resource information sent by the terminal device, and sends the query resource information to the MIH user module.
  • the MIH user module requests and obtains actual available resource information of the candidate access network according to the query resource information.
  • the MIH user module may send the query resource tag information to the terminal device through the MIHF module, and query the resource tag information to indicate whether the terminal device needs to provide the query resource information.
  • the MIH user module After obtaining the actual available resource information, the MIH user module sends the actual available resource information and the identifier information of the candidate access network corresponding to the actual available resource information to the terminal device through the MIHF module.
  • the communication system in an embodiment of the present invention, as shown in FIG. 6, includes:
  • a terminal device configured to send query resource information in media independent handover
  • the access network is used to connect the terminal device to the network, where:
  • the candidate access network sends the actual available resource information to the service access network according to the request.
  • the media independent handover can be triggered by the service access network, and is set to the terminal.
  • the query resource tag information is sent, and the query resource tag information indicates whether the terminal device needs to provide the query resource information;
  • the terminal device sends the query resource information when it is determined that the query resource information needs to be provided according to the tag information.
  • the service access network may send the actual available resource information and the identifier information of the candidate available access network to the terminal device.

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

Abstract

Procédé de négociation sur des ressources, terminal, réseau d'accès et système de communication correspondants permettant d'améliorer le processus de régulation des ressources dans le cadre d'un transfert indépendant des supports. Selon la présente invention, le dispositif terminal envoie des informations d'interrogation sur les ressources au réseau d'accès de desserte correspondant dans le cadre du transfert indépendant des supports; sur la base d ces informations, ce serveur demande à un réseau d'accès candidat de s'enquérir des ressources et obtient des informations sur les ressources dont dispose effectivement ce réseau d'accès candidat. Ainsi, il est possible de faire en sorte que deux terminaux négocient normalement sur les ressources dans le cadre du processus de transfert indépendant des supports et donc d'assurer un flux de transfert normal.
PCT/CN2007/003729 2006-12-22 2007-12-21 Procédé de négociation sur des ressources; terminal, réseau d'accès et système de communication correspondants WO2008077314A1 (fr)

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WO2006052805A2 (fr) * 2004-11-05 2006-05-18 Freescale Semiconductor, Inc. Procede de transfert independant du support (mih) a balise simplifiee
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