WO2011140696A1 - Procédé et dispositif corrélatif pour transfert d'équipement utilisateur entre nœuds b domestiques - Google Patents

Procédé et dispositif corrélatif pour transfert d'équipement utilisateur entre nœuds b domestiques Download PDF

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Publication number
WO2011140696A1
WO2011140696A1 PCT/CN2010/072560 CN2010072560W WO2011140696A1 WO 2011140696 A1 WO2011140696 A1 WO 2011140696A1 CN 2010072560 W CN2010072560 W CN 2010072560W WO 2011140696 A1 WO2011140696 A1 WO 2011140696A1
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WO
WIPO (PCT)
Prior art keywords
base station
home base
hnb
pdp context
mobile terminal
Prior art date
Application number
PCT/CN2010/072560
Other languages
English (en)
Chinese (zh)
Inventor
温海波
刘刚
宾梵翔
Original Assignee
上海贝尔股份有限公司
阿尔卡特朗讯公司
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 上海贝尔股份有限公司, 阿尔卡特朗讯公司 filed Critical 上海贝尔股份有限公司
Priority to CN201080066516.6A priority Critical patent/CN102860081B/zh
Priority to PCT/CN2010/072560 priority patent/WO2011140696A1/fr
Publication of WO2011140696A1 publication Critical patent/WO2011140696A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/12—Reselecting a serving backbone network switching or routing node
    • H04W36/125—Reselecting a serving backbone network switching or routing node involving different types of service backbones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic

Definitions

  • the present invention relates generally to wireless communication systems and, more particularly, to handovers in wireless communication systems. Background technique
  • Femtocells have become a hot topic in the telecommunications field.
  • femtocells were designed to improve indoor signal coverage and offload mobile data from wireless mobile access networks.
  • the femtocell is called the Home Node B (HNB, which is the home base station in the 3GPP, and the HNB is the HeNB in the LTE network). It works on the licensed spectrum and connects the standard mobile device to the mobile operation using a home DSL or cable broadband connection.
  • Business network The details of the femtocell can be found at http: ⁇ www.femtoforum.org/femto/. Currently, as much as possible, the mobile data is offloaded from the mobile core network.
  • 3GPP proposes the concept of local IP access (LIPA) and selective IP service offload (SIPTO) (see TS 25.467: “UTRAN architecture for 3G Home Node B (HNB)” and TR 23.829: “Local IP Access and Selected IP” Traffic Offload”), these two types of services can be attributed to the bypass business.
  • LIPA local IP access
  • SIPTO selective IP service offload
  • the HNB system includes two important network elements: HNB, HNB-GW.
  • HNB integrates the functionality of a standard Node B with the standard RNC (Radio Network Controller) radio resource management capabilities.
  • the HNB-GW is located in the mobile operator network, aggregates services from many HNBs and sends the aggregated traffic to the mobile core network through the standard Iu-CS/Iu-PS interface. From the perspective of the mobile core network, the HNB-GW is like an RNC, which shields the specific details of the HNBs connected to the HNB-GW, rather than allowing the network elements in the mobile core network to see the RNC functions on many HNBs.
  • HNB Home Location Network
  • Services ie common circuit switched CS services and packet switched PS services
  • LIPA services LIPA services
  • SIPTO services SIPTO services.
  • the latter two services enable the service to communicate directly with the IP device in the local network (that is, the network directly connected to the HNB) or directly communicate with the IP device in the backhaul network without accessing the mobile core network.
  • these two services are The service data of the class service is not directly provided by the HNB to the HNB through the mobile core network (of course, its control signaling is still handled by the relevant network element/network device of the mobile core network).
  • LIPA provides access to other IP-enabled entities in the same home/enterprise IP network for user terminals UE with IP functionality through H(e)NB (ie using H(e)NB wireless access) connection In.
  • SIPTO provides access for UEs connected to a defined network (such as the Internet) via H(e)NB (i.e., using H(e)NB wireless access).
  • a defined network such as the Internet
  • H(e)NB i.e., using H(e)NB wireless access
  • More than one HNB is deployed in the enterprise network (as shown in Figure 1). For example, a UE with an ongoing LIPA connection moves from one HNB to another, and the user is calling another extension within the enterprise. After the LIPA PDN connection is established, the UE and another IP-enabled device are logically located on the same LAN.
  • HNBs * UEs with ongoing SIPTO services move between different HNBs (the HNBs are connected to the same HNB-GW through the same backhaul network, and the IP addresses for SIPTO service connections are obtained from the backhaul network).
  • HNB-GW Home Node B Gateway
  • CSG Click User Group
  • TS 25.467 re-uses the RANAP (Radio Access Network Application Part) relocation process between HNB and HNB-GW, only for direct provisioning from the mobile core network.
  • the service solves the connection mode mobility between HNBs. The solution does not cover the mobility used to offload the business. The specific reasons are as follows:
  • the SGSN (Serving GPRS Support Node) and the GGSN (Gateway GPRS Support Node) do not change for services directly provided from the mobile core network. It is not necessary to change the PDP context in the SGSN as well as in the GGSN (where PDP stands for Packet Data Protocol, which is the network protocol used by the external PDN network and the GPRS interface). However, for the local offload service (LIPA and SIPTO), the GGSN has changed. There is no PDP context in the target local GGSN.
  • PDP Packet Data Protocol
  • the present invention aims to extend the connection mode mobility between HNBs to solve the mobility problem of the local bypass/uninstallation service via the HNB. It should be noted that the present invention mainly relates to handover between HNBs in the same HNB-GW and in the same CSG. When designing this scheme, the scheme is required to consider that the UE has ongoing PS/CS services from the mobile core network and local offload services, that is, for successfully switching from the source HNB to the target HNB with all ongoing services. solution. Summary of the invention
  • the purpose of the present invention is to extend the mobility of the connection mode between HNBs in the same HNB-GW and in the same CSG to support offloading service switching in the local network.
  • the present invention proposes that for the LIPA mobility or SIPTO mobility mentioned above, the HNB-GW triggers the creation of a PDP context on the target HNB.
  • the present invention provides a method for implementing handover of a mobile terminal from a source home base station to a target home base station on a home base station gateway of a communication network, the method comprising: after the home base station gateway determines the target home base station to be handed over Determining whether the mobile terminal has an offload service network connection; and if the mobile terminal has an offload service network connection, the home base station gateway triggers an operation of creating a packet data protocol PDP context on the target home base station .
  • the home base station gateway triggers at the target home.
  • the operation of creating a PDP context on the base station includes transmitting a request to create a PDP context to the target home base station.
  • the IP address used by the mobile terminal to connect to the offloaded service network is included in the request to create a PDP context.
  • the offload service network connection is a local IP access LIPA connection or an IP service offload SIPTO connection.
  • the embodiment of the present invention further includes an operation of the home base station gateway to trigger deletion of a PDP context on the source home base station.
  • the present invention provides a home base station gateway for implementing handover of a mobile terminal from a source home base station to a target home base station in a communication network, the home base station gateway comprising: determining the movement after determining the target home base station for handover Whether the device has a device for offloading the service network connection on the terminal; and means for triggering the creation of a PDP context operation on the target home base station if the mobile terminal has an offload service network connection.
  • the means for triggering the creation of a PDP context operation on the target home base station is further configured to send a request to create a PDP context to the target home base station.
  • Embodiments of the invention further include means for triggering deletion of PDP context operations on the source home base station upon completion of the handover.
  • the present invention also provides a home base station operating in a communication network with a home base station gateway according to the present invention, wherein the home base station gateway determines to handover a mobile terminal to the home base station and determines the movement
  • the home base station includes means for creating a PDP context of the offload service network connection according to the trigger of the home base station gateway.
  • the means for creating the PDP context of the offload service network connection creates a PDP context with the IP address of the offload service network connection currently used by the mobile terminal as a PDP address.
  • the present invention also relates to a home in a communication network and according to the present invention a home base station that is operated by the base station gateway, where the home base station gateway determines to switch the mobile terminal to another home base station and determines that the mobile terminal has an offload service network connection, the home base station includes the home base station gateway Triggering, deleting the device that unloads the PDP context of the service network connection.
  • the invention further relates to a computer program product in which computer instructions for performing the steps of the method according to the invention are stored.
  • Figure 1 shows a case where a UE moves between different HNBs connected to the same LAN
  • Figure 2 shows a logical network structure for offloading services
  • FIG. 3 illustrates a handover procedure of a local offload service between HNBs according to an embodiment of the present invention
  • FIG. 4 shows a functional block diagram of an HNB and an HNB-GW in accordance with an embodiment of the present invention. detailed description
  • the term “offloading traffic” mainly includes the LIPA or SIPTO services mentioned above, and the term “unloading service network connection” mainly includes LIPA or SIPTO PDN connections.
  • the term “home base station” includes not only “HNB” in the UMTS environment but also HeNB in the LTE environment.
  • the home base station gateway “includes not only the HNB-GW in the UMTS environment but also the HeNB-GW in the LTE environment.
  • the mobility management entity MME will replace the control role of the SGSN. Some messages will be modified. For example, in LTE, creating a session request/response will replace the create PDP context request/response in UMTS, which will replace the delete PDP context request/response in UMTS.
  • FIG. 2 shows a reverse network structure for offloading services.
  • the local GGSN is added to the HNB, and the HNB-GW will also hide the details of the local GGSN in the HNB.
  • the IP address of the local GGSN of the PDP context on the SGSN is the IP address of the HNB-GW, and the HNB-GW maintains the actual PDP context information for the local offloading PDN of the UE (including the local GGSN). IP address).
  • the UE moves between HNBs, it does not understand this change from the perspective of the SGSN and will reuse the RANAP relocation procedure between the HNB and the HNB-GW.
  • the local GGSN must be changed, and the same IP address must be used when the UE switches between HNBs.
  • the following features must be used to extend the mobility of existing "HNBs (within the same HNB-GW, within the same CSG) connection mode.
  • the HNB-GW must determine if there is a local offload service on the UE, and if so, the HNB-GW will trigger the Create PDP Context procedure on the target HNB and specify that the UE will use its current The IP address being used for bypass/uninstallation services.
  • HNB - GW is responsible for triggering the delete PDP context procedure on the source HNB.
  • FIG. 3 illustrates a handover procedure of a local offload service between HNBs according to an embodiment of the present invention.
  • the source HNB and the target HNB are on the same LAN and are in the same HNB-GW and the same CSG.
  • the local offload service will switch from the source HNB to the target HNB.
  • the UE has established an active CS/PS session to the mobile core network, and a local offload PDN connection such as LIPA or SIPTO established via the source HNB and HNB-GW.
  • a local offload PDN connection such as LIPA or SIPTO established via the source HNB and HNB-GW.
  • the UE may also have only the local offload PDN connection in use.
  • the source HNB decides to relocate the UE to a certain target HNB.
  • the HNB-GW receives the RUA DIRECT TRANSFER message sent by the source HNB, where the message includes the UE's context ID, CN domain indication, and RANAP relocation requirement.
  • the RUA is a RANAP protocol user adaptation layer for transparently transmitting RANAP messages between the HNB and the HNB-GW.
  • the HNB-GW will determine the target NHB in accordance with the normal operation of TS 25.467 and send a direct transfer message to the target NHB, including the UE context ID, CN domain indication, and RANAP relocation request. And other information.
  • the HNB-GW must determine whether there is an ongoing LIPA or SIPTO PDN (Packet Data Network) connection on the UE. Since the HNB-GW must maintain PDP context information for the UE's local offload PDN, the decision process here is not complicated.
  • the HNB-GW will use the existing LIPA or SIPTO PDP context to trigger the create context procedure on the target HNB. For example, in step 306, a Create PDP Context Request message is sent to the local GGSN of the target HNB, the request message having an existing LIPA/SIPTO PDP context parameter. In this message, the IP address currently used by the UE for LIPA or SIPTO is used as the designated PDP address. In addition, the corresponding QoS parameters must also be specified in the request message. This information is maintained in the HNB-GW when the UE initially establishes a LIPA/SIPTO PDP connection via the source HNB.
  • the target HNB After receiving the request RUA connection (RUA CONNECT) including the UE context ID, the CN domain indication, the RANAP relocation request, and the creation of the PDP context request message, the target HNB will take the corresponding action. For example, in steps 307a and 307b, the UE implicitly registers and allocates relocation resources in a conventional manner. Additionally, in step 307c, the target HNB will create a PDP context for LIPA/SIPTO. Vision LIPA/SIPTO in the source HNB is made. In step 307d, the target HNB announces that the UE being switched can communicate through the network directly connected thereto, which can be achieved by Gratuitous ARP technology, DHCP technology, and the like. After completing the above processes, the corresponding response message will be sent to the HNB-GW, such as the RUA direct transfer message including the RANAP relocation request acknowledgement in step 308 and the create PDP context response message in step 309.
  • RUA connection RUA CONNECT
  • Subsequent steps 310 through 317 are substantially identical to the prior art processes.
  • the HNB-GW is also responsible for triggering the process of deleting the PDP context on the source HNB.
  • the HNB-GW sends a PDP context request for deleting the LIPA/SIPTO to the source HNB to delete the related record on the source HNB. Resources.
  • the source HNB sends a response to delete the PDP context to the HNB-GW.
  • FIG. 4 shows a functional block diagram of an HNB and an HNB-GW in accordance with an embodiment of the present invention.
  • the embodiment of the HNB-GW includes a determining module 401, configured to determine, after determining the target home base station for handover, whether there is an offload service network connection such as a LIPA connection or a SIPTO connection on the UE; triggering a module 402 for creating a PDP context, For triggering a PDP context operation with the IP address being used by the UE on the target HNB if there is an offloaded service network connection on the UE; preferably, the means for triggering the creation of a PDP context operation on the target home base station is configured to A request to create a PDP context is sent to the target HNB.
  • the HNB according to the embodiment of the present invention further includes a module 403 for triggering the deletion of the PDP context operation, for triggering deletion of the PDP context operation on the source HNB after the handover is completed.
  • the local GGSN module 404 included in the target HNB is configured to create a PDP context of LIPA/SIPTO when receiving a PDP context request for creating a LIPA/SIPTO sent by the HNB-GW, and update the UE for the PDP context in the local network.
  • the transmission path ie, the announcement that the UE is now reachable through the target HNB.
  • the corresponding response message (for example, creating a PDP context response message) will be sent to the HNB-GW, and the local GNSN module 405 included in the source HNB is used to receive the PDP context of the deleted LIPA/SIPTO sent by the HNB-GW.
  • the PDP context of LIPA/SIPTO is deleted, and a response message is sent to the HNB-GW.
  • the modules shown in Fig. 4 are completely functionally divided and are not intended to define physical structures.
  • the local GGSN is located in the HNB, but this is only a logical inclusion relationship.
  • the HNB in Fig. 4 only includes the local GGSN, which indicates that the functional unit directly related to the present invention is a local GGSN, and does not exclude that the HNB also includes other functional units. In order not to obscure the invention, other functional units are not shown one by one.
  • the home base station gateway and the home base station according to the embodiment of the present invention do not involve hardware improvement, and can be implemented by combining computer software on the basis of the existing base station.

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

Abstract

Selon l'invention, pour permettre la mobilité du trafic de délestage local (LIPA, SIPTO) entre deux ou plus de deux nœuds B domestiques (HNB), la présente invention porte sur un procédé de mise en œuvre du transfert de l'équipement utilisateur (UE) d'un HNB source à un HNB cible au niveau de la passerelle de nœud B domestique (HNB-GW) du réseau de communication. Ledit procédé comprend les opérations suivantes : après la détermination de l'HNB cible, la HNG-GW détermine si ledit UE est connecté au réseau pour un trafic de délestage ou non et, si ledit UE est connecté au réseau pour un trafic de délestage, alors ladite HNB-GW déclenche l'opération de création de contexte de protocole de données par paquets (PDP) au niveau dudit HNB cible. La présente invention porte en outre sur la HNB-GW et un HNB pour mettre en œuvre ledit procédé.
PCT/CN2010/072560 2010-05-10 2010-05-10 Procédé et dispositif corrélatif pour transfert d'équipement utilisateur entre nœuds b domestiques WO2011140696A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201080066516.6A CN102860081B (zh) 2010-05-10 2010-05-10 移动终端在家庭基站间进行切换的方法和相关设备
PCT/CN2010/072560 WO2011140696A1 (fr) 2010-05-10 2010-05-10 Procédé et dispositif corrélatif pour transfert d'équipement utilisateur entre nœuds b domestiques

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PCT/CN2010/072560 WO2011140696A1 (fr) 2010-05-10 2010-05-10 Procédé et dispositif corrélatif pour transfert d'équipement utilisateur entre nœuds b domestiques

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WO2011140696A1 true WO2011140696A1 (fr) 2011-11-17

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CN105634980A (zh) * 2016-01-07 2016-06-01 北京佰才邦技术有限公司 数据报文处理方法及基站

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CN103338488B (zh) 2013-06-21 2016-03-09 华为技术有限公司 网络切换方法、终端、控制器、网关及系统

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