WO2012149797A1 - 一种获取无线局域网络信息的方法及装置 - Google Patents

一种获取无线局域网络信息的方法及装置 Download PDF

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Publication number
WO2012149797A1
WO2012149797A1 PCT/CN2011/080544 CN2011080544W WO2012149797A1 WO 2012149797 A1 WO2012149797 A1 WO 2012149797A1 CN 2011080544 W CN2011080544 W CN 2011080544W WO 2012149797 A1 WO2012149797 A1 WO 2012149797A1
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Prior art keywords
user equipment
local area
wireless local
area network
location
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PCT/CN2011/080544
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English (en)
French (fr)
Inventor
王珊珊
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2011/080544 priority Critical patent/WO2012149797A1/zh
Priority to CN2011800024388A priority patent/CN102440045A/zh
Publication of WO2012149797A1 publication Critical patent/WO2012149797A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for acquiring wireless local area network information.
  • FIG. 1 is a current wireless evolution network architecture diagram.
  • the MME Mobility Management Entity
  • the SGSN Serving GPRS Support Node
  • SGW Serving Gateway
  • PGW Packet Gateway
  • the domain data network gateway is responsible for the allocation of the IP address of the UE (User Equipment).
  • the wireless access part of the 2G network is GERAN (GSM EDGE Radio Access Network, GSM/EDGE Radio Access Network), BTS (Base Transceiver Station), and Base Station Controller (BSC). Controller);
  • the wireless access part of the 3G network is UTRAN (Universal Mobile Telecommunication System Territorial Radio Access Network), by RNC (Radio Network Controller, Radio Network Controller) and NodeB (Node B);
  • the radio access part of the LTE network is E-UTRAN (Evolved UTRAN, Evolved Universal Mobile Telecommunications System Terrestrial Radio Access Network), evolved by eNodeB (evolved NodeB, evolved) Node B) constitutes.
  • WLAN Wireless Local Area Network
  • the SAE network defines the Access Network Discovery and Selection Function (ANDS) entity.
  • ANDSF Access Network Discovery and Selection Function
  • the UE provides the current location information of the UE to the access network discovery selection function entity, and the access network discovery selection function entity returns the wireless local area network information corresponding to the location.
  • 2 is a schematic diagram of a process in which a UE accesses a trusted access method by using Wi-Fi when the ANDSF mechanism is used, where
  • Step S201 The UE accesses the network to obtain an IP address.
  • Step S202 The UE establishes a security association with the access network discovery selection function entity.
  • Step S203 Step S204: The UE acquires wireless local area network information corresponding to the current location.
  • Step S205 The UE determines whether to initiate Wi-Fi access or handover according to the policy.
  • the ANDSF mechanism in the prior art requires that all the correspondence between the WLAN and its location be preset to provide suitable WLAN information for the UE.
  • the WLAN is dynamically changing, and it is possible to increase, decrease, or replace, and the correspondence between the WLAN and its location changes accordingly.
  • the prior art does not provide an effective mechanism for the user equipment to be obtained in time. Get the latest WLAN information corresponding to its location.
  • the embodiment of the invention provides a method and a device for acquiring wireless local area network information, so that the user equipment can obtain the wireless local area network information corresponding to the location in time.
  • a method for obtaining wireless local area network information includes: determining, by the network element of the mobile network, the wireless local area network information corresponding to the current location of the user equipment according to the current location information of the user equipment;
  • the network element of the mobile network sends the wireless local area network information corresponding to the current location of the user equipment to the user equipment.
  • a network element of a mobile network provided by the embodiment of the present invention includes:
  • a determining unit configured to determine, according to current location information of the user equipment, wireless local area network information corresponding to the current location of the user equipment;
  • a sending unit configured to send the wireless local area network information corresponding to the current location of the user equipment to the user equipment after the determining unit determines the wireless local area network information corresponding to the current location of the user equipment.
  • a location information providing unit configured to provide a current location information of the user equipment to the network element of the mobile network
  • a receiving unit configured to receive wireless local area network information corresponding to a current location of the user equipment that is sent by a network element of the mobile network, where the network element of the mobile network is sent according to the user equipment sent by the location information providing unit
  • the current location information determines the wireless local area network information corresponding to the current location of the user equipment.
  • the method for acquiring wireless local area network information, the network element of the mobile network, and the user equipment provided by the embodiment of the present invention the network element of the mobile network sends the wireless local area network information corresponding to the current location of the user equipment to the user equipment, so that the user equipment can Get the WLAN corresponding to its location in time Information.
  • FIG. 2 is a schematic diagram of a process in which a UE accesses a trusted access method using Wi-Fi when the ANDSF mechanism is used;
  • FIG. 3 is a schematic diagram of a method for obtaining wireless local area network information according to an embodiment of the present invention
  • FIG. 4 is a flowchart of an implementation of a second embodiment of a method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of implementing Embodiment 3 of a method according to an embodiment of the present disclosure
  • FIG. 6 is a flowchart of an implementation of Embodiment 4 of a method according to an embodiment of the present disclosure
  • FIG. 7 is a flowchart of an implementation manner of Embodiment 5 of a method according to an embodiment of the present disclosure.
  • FIG. 8 is a flowchart of an implementation manner of Embodiment 6 of a method according to an embodiment of the present disclosure.
  • FIG. 9 is a network element of a mobile network according to an embodiment of the present invention.
  • FIG. 10 is a user equipment according to an embodiment of the present invention. detailed description
  • a method for obtaining wireless local area network information includes:
  • Step S301 The network element of the mobile network determines the wireless local area network information corresponding to the current location of the user equipment according to the current location information of the user equipment.
  • the network element of the mobile network can obtain the wireless local area network information corresponding to the current location of the user equipment in the following manner: the network element of the mobile network is pre-configured with each wireless local area network within its jurisdiction and the wireless local area network a mapping relationship between the location information, the network element of the mobile network searching for the mapping relationship according to the current location information of the user equipment, and obtaining the current The location of the corresponding wireless local area network information.
  • the network element of the mobile network can obtain the wireless local area network information corresponding to the current location of the user equipment by other means, for example, the network element of the mobile network is configured with the wireless local area network and The network device that is in the mapping relationship of the location information sends a request, where the request carries the current location information of the user equipment, so that the network device sends the wireless local area network information corresponding to the current location of the user equipment to the network element of the mobile network, where
  • the network device may include, but is not limited to: an eNodeB, an MME, an SGW, a PGW, an RNC, a BSC, an SGSN, an ANDSF, or various gateways.
  • the network element of the mobile network in the embodiment of the present invention may include, but is not limited to, any one of the following: ⁇ , SGW, PGW, eNodeB, RNC, BSC, SGSN.
  • Step 302 The network element of the mobile network sends the wireless local area network information corresponding to the current location of the user equipment to the user equipment.
  • the network element of the mobile network sends the WLAN information corresponding to the current location of the user equipment to the user equipment, including but not limited to any of the following methods:
  • the first mode is a pull model: after receiving the request message sent by the user equipment, the network element of the mobile network sends the wireless local area network information corresponding to the current location of the user equipment to the user equipment as a response.
  • the push mode (push modd): the network element of the mobile network actively pushes the wireless local area network information corresponding to the current location of the user equipment to the user equipment.
  • the method for obtaining the wireless local area network information is provided by the embodiment of the present invention, and the wireless local area network information corresponding to the current location of the user equipment is sent to the user equipment by the network element of the mobile network, so that the user equipment can obtain the wireless corresponding to the current location of the user equipment in time.
  • the local area network information in addition, the mapping relationship between the WLANs in the jurisdiction and the location information of the WLANs is pre-configured in the network element of the mobile network, so that the mapping relationship is distributed in the network of the mobile network.
  • the configuration of the mapping relationship is centralized, and secondly, the network element of the mobile network can be pulled by a model or a push model
  • the user equipment sends the wireless local area network information corresponding to the location of the user equipment, so that the manner of transmitting the wireless local area network information corresponding to the location of the user equipment is more flexible.
  • FIG. 4 it is a flowchart of the implementation of the second embodiment of the method provided by the embodiment of the present invention.
  • the network element of the mobile network is the SGW, and the embodiment includes:
  • S401 The UE sends an Attach Request or a PDN Connction Setup Request message to the MME, where the attach request or the PDN connection creation request carries the current location information of the UE.
  • the attach request or PDN connection creation request may carry a WLAN Capability of the UE
  • the MME sends a Create Session Request message to the SGW, where the Create Session Request message carries the current location information of the UE.
  • the create session request message carries a wireless local area network access capability of the UE
  • S403 The SGW sends a create session request message to the PGW.
  • the PGW allocates an IP address to the UE.
  • the PGW sends a Create Session Response message to the SGW;
  • the SGW determines, according to the current location information of the UE, the WLAN information corresponding to the current location of the UE, where the WLAN information includes a WLAN service set identifier (Service Set IDentification, a device name: SSID) or a WLAN basic month.
  • Base Service Set IDentification (tube name: BSSID);
  • the SGW can obtain the WLAN information corresponding to the current location of the UE in the following manner:
  • the SGW pre-configures a mapping relationship between each WLAN in its jurisdiction and the location information of each WLAN, where the SGW is based on the current UE. After the location information is searched for the mapping relationship, the wireless local area network information corresponding to the current location of the UE is obtained;
  • the SGW can obtain the wireless local area network information corresponding to the current location of the UE by other means, for example, the SGW is configured to the configured wireless local area network.
  • the network device in the mapping relationship of the location information sends a request, where the request carries the current location information of the UE, so that the network device sends the wireless local area network information corresponding to the current location of the UE to the network element of the mobile network;
  • the SGW After determining the WLAN information corresponding to the current location of the UE, the SGW sends a create session response message to the MME, where the create session response message carries the WLAN corresponding to the current location of the UE.
  • the MME If the MME receives the PDN connection setup request message sent by the UE, the MME sends a bearer context setup request (Bearer Context Setup Request) message and a PDN Connection Setup Response message to the eNodeB;
  • Any one of the two types of messages sent to the eNodeB may carry the WLAN information corresponding to the current location of the UE, for example, the initialization context creation request message sent by the MME to the eNodeB when the MME receives the attach request message sent by the MME.
  • any one of the attach accept message may carry the wireless local area network information corresponding to the current location of the UE;
  • the eNodeB sends a radio resource control to the UE (Radio Resource Control).
  • RRC a configuration message, where the RRC connection configuration message carries WLAN information corresponding to the current location of the UE;
  • the UE sends a radio resource control connection configuration to the eNodeB (RRC Connection)
  • Bearer Context Setup Response Message or Bearer Context Setup Response message, specifically:
  • the eNodeB receives the initialization context creation request message sent by the MME and the attach accepting cancellation The eNodeB sends an initialization context creation response message to the MME; or
  • the eNodeB If the eNodeB receives the bearer context creation request message and the PDN connection creation response message sent by the MME, the eNodeB sends a context creation response message to the MME;
  • S410 The MME sends a Modify Session Request message to the SGW.
  • S411 The MME receives the Modify Session Response message sent by the SGW, and completes the connection establishment process.
  • S412 The UE determines, according to the policy, whether to initiate Wi-Fi access.
  • step S412 can be performed before, after or at the same time as step S409, and there is no sequence, but the Wi-Fi access can be completed only after the step S411 is performed.
  • mappings between the wireless local area networks in the jurisdiction and the location information of the wireless local area networks may be pre-configured on the network elements (eg, PGW, MME, or eNodeB) of other mobile networks. And sending the WLAN information corresponding to the current location of the UE to the UE in the process of the connection creation, and the implementation process is similar to the process in this embodiment, and is not described here.
  • the UE accesses the mobile network through the LTE access mode.
  • each WLAN in the jurisdiction can be pre-configured on the SGSN, RNC or BSC.
  • the mapping relationship between the location information of each wireless local area network is described, and the wireless local area network information corresponding to the current location of the UE is sent to the UE through a radio access bearer setup message during the connection creation process, and the implementation process and the implementation Similar to the example, here ⁇ again - narrative surprise
  • the second embodiment of the method provided by the embodiment of the present invention sends the WLAN information corresponding to the current location of the user equipment to the user equipment by using the SGW, so that the user equipment can obtain the WLAN information corresponding to the current location of the user equipment in time, and in the SGW.
  • the SGW is directly in the SGW.
  • the process of obtaining the wireless local area network information by the user equipment is simplified, and the real-time performance of the user equipment to obtain the wireless local area network information corresponding to the current location of the user equipment is improved, and the delay of the user equipment accessing the wireless local area network is reduced.
  • FIG. 5 it is a flowchart of the implementation of the third embodiment of the method according to the embodiment of the present invention.
  • the network element of the mobile network is a PGW, and the embodiment includes:
  • S501 The UE sends an attach request message or a PDN connection creation request message to the MME.
  • S502 The MME sends a create session request message to the SGW.
  • S503 The SGW sends a create session request message to the PGW.
  • S504 The PGW allocates an IP address to the UE, and sends a create session response message to the SGW.
  • S505 The SGW sends a create session response message to the MME.
  • the MME If the MME receives the PDN connection creation request message sent by the UE, the MME sends a bearer context creation request message and a PDN connection creation response message to the eNodeB;
  • the eNodeB sends a radio resource control connection configuration message to the UE.
  • S508 The UE sends a radio resource control connection configuration completion message to the eNodeB.
  • the eNodeB sends an initialization context creation response message to the MME or?
  • the context-creating response message specifically:
  • the eNodeB If the eNodeB receives the initialization context creation request message sent by the MME and the attach accept message, the eNodeB sends an initialization context creation response message to the MME; or
  • the eNodeB If the eNodeB receives the bearer context creation request message and the PDN connection creation response message sent by the MME, the eNodeB sends a context creation response message to the MME;
  • S510 The MME sends a modify session request message to the SGW.
  • S511 The MME receives the modify session response message sent by the SGW, and completes the connection establishment process.
  • the information request message carries the current location information of the UE;
  • the WLAN information request message may carry the WLAN access capability of the UE
  • step S512 can be performed before, after or simultaneously with the step S509, and there is no sequence, but only after the step S511 is executed, the wireless local area network information can be sent.
  • the PGW determines, according to the current location information of the UE, the wireless local area network information corresponding to the current location of the UE, where the wireless local area network information includes a wireless local area network service set identifier or a wireless local area network basic service set identifier.
  • the PGW can obtain the WLAN information corresponding to the current location of the UE in the following manner:
  • the PGW pre-configures the mapping relationship between the WLANs in its jurisdiction and the location information of the WLANs, where the PGW is based on the current UE. After the location information is searched for the mapping relationship, the wireless local area network information corresponding to the current location of the UE is obtained;
  • the PGW can obtain the WLAN information corresponding to the current location of the UE by other means, for example, the PGW sends a request to the network device that has configured the mapping relationship between the WLAN and the location information thereof.
  • the request carries the current location information of the UE, so that the network device sends the wireless local area network information corresponding to the current location of the UE to the network element of the mobile network;
  • the PGW After determining the WLAN information corresponding to the current location of the UE, the PGW sends a wireless local area network information response message to the UE, where the WLAN information response message carries the wireless local area network information corresponding to the current location of the UE;
  • S514 The UE determines, according to the policy, whether to initiate Wi-Fi access.
  • mappings between the wireless local area networks in the jurisdiction and the location information of the wireless local area networks may be pre-configured on the network elements (eg, SGW, MME, or eNodeB) of other mobile networks. And sending a WLAN information response message to the user equipment according to the WLAN information request message sent by the user equipment, and implementing the process and the process class of the embodiment Like, no longer here - narrative.
  • the UE accesses the mobile network through the LTE access mode.
  • each WLAN in the jurisdiction can be pre-configured on the SGSN, RNC or BSC.
  • the mapping relationship between the location information of each WLAN is described, and the WLAN information response message is sent to the user equipment according to the WLAN information request message sent by the user equipment, and the implementation process is similar to that in this embodiment. - Narrative.
  • the third embodiment of the method provided by the embodiment of the present invention after the connection establishment is completed, requests the PGW to request the wireless local area network information corresponding to the current location of the user equipment, so that the user equipment can obtain the wireless local area network information corresponding to the current location of the user equipment in time.
  • the mapping relationship between each WLAN in the jurisdiction and the location information of each WLAN is pre-configured in the PGW, so that the mapping relationship is stored in the PGW, and the mapping relationship is configured.
  • the flowchart of the implementation of the fourth embodiment of the method is provided in the embodiment of the present invention.
  • the network element of the mobile network is an MME, and the embodiment includes:
  • S601 The UE sends an attach request message or a PDN connection creation request message to the MME, where the attach request or the PDN connection creation request carries the current location information of the UE.
  • S602 The MME sends a create session request message to the SGW.
  • S603 The SGW sends a create session request message to the PGW.
  • S604 The PGW allocates an IP address to the UE, and sends a create session response message to the SGW.
  • S605 The SGW sends a create session response message to the MME.
  • the MME If the MME receives the PDN connection creation request message sent by the UE, the MME sends a bearer context creation request message and a PDN connection creation response message to the eNodeB;
  • the eNodeB sends a radio resource control connection configuration message to the UE.
  • S608 The UE sends a radio resource control connection configuration completion message to the eNodeB.
  • S609 The eNodeB sends an initialization context creation response message or a context creation response message to the MME, specifically:
  • the eNodeB If the eNodeB receives the initialization context creation request message sent by the MME and the attach accept message, the eNodeB sends an initialization context creation response message to the MME; or
  • the eNodeB If the eNodeB receives the bearer context creation request message and the PDN connection creation response message sent by the MME, the eNodeB sends a context creation response message to the MME;
  • S610 The MME sends a modify session request message to the SGW.
  • the MME receives the modify session response message sent by the SGW, and completes the connection establishment process.
  • the MME determines, according to the current location information of the UE, the wireless local area network information corresponding to the current location of the UE, where the WLAN local area network information includes a wireless local area network service set identifier or a wireless local area network basic service set identifier.
  • the MME can obtain the WLAN information corresponding to the current location of the UE in the following manner:
  • the MME pre-configures the mapping relationship between the WLANs in its jurisdiction and the location information of the WLANs, where the MME is based on the current UE. After the location information is searched for the mapping relationship, the wireless local area network information corresponding to the current location of the UE is obtained;
  • the MME may obtain the WLAN information corresponding to the current location of the UE by other means, for example, the MME sends a request to the network device that has configured the mapping relationship between the WLAN and the location information thereof.
  • the request carries the current location information of the UE, so that the network device sends the wireless local area network information corresponding to the current location of the UE to the network element of the mobile network;
  • the MME After determining the WLAN information corresponding to the current location of the UE, the MME actively sends the WLAN information corresponding to the current location of the UE to the UE.
  • S613 The UE determines, according to the policy, whether to initiate Wi-Fi access.
  • each wireless local area network within the jurisdiction and the wireless local area network may be pre-configured on network elements (eg, SGW, PGW, or eNodeB) of other mobile networks.
  • network elements eg, SGW, PGW, or eNodeB
  • the WLAN information corresponding to the current location of the UE is actively pushed to the UE.
  • the implementation process is similar to the process in this embodiment, and is not described here.
  • the UE accesses the mobile network through the LTE access mode.
  • each WLAN in the jurisdiction can be pre-configured on the SGSN, RNC or BSC.
  • the mapping relationship between the location information of each WLAN is described, and after the connection is established, the WLAN information corresponding to the current location of the UE is actively pushed to the UE, and the implementation process is similar to that in this embodiment. .
  • the MME actively pushes the WLAN information corresponding to the current location of the user equipment to the user equipment, so that the user equipment can obtain the WLAN information corresponding to the current location of the user equipment in time, and improve the user equipment.
  • the mapping relationship between the location information of the network is such that the mapping relationship distribution is stored in the MME, and the configuration of the mapping relationship is compressed. As shown in FIG.
  • the network element of the mobile network is the target network side MME, and the network in the embodiment of the present invention is called before the UE moves.
  • the target network side the network where the UE is moved.
  • this embodiment includes:
  • the target network side MME acquires the location information of the UE after the location change, and the location information after the location change of the UE refers to the location information after the UE switches to the target network side;
  • the target network side MME determines, according to the changed location information of the UE, the WLAN information corresponding to the changed location of the UE, where the WLAN information includes the WLAN SSID. Or WLAN BSSID;
  • the target network side MME can obtain the WLAN information corresponding to the location change of the UE in the following manner:
  • the target network side MME pre-configures the mapping relationship between each WLAN in its jurisdiction and the location information of each WLAN.
  • the target network side MME searches for the mapping relationship according to the changed location information of the UE, and obtains the wireless local area network information corresponding to the changed location of the UE;
  • the target network side MME can also obtain the corresponding wireless local area network information after the UE location change by other means, for example, the mapping relationship between the target network side MME and the configured wireless local area network and its location information.
  • the network device sends a request, where the request carries the location information of the changed location of the UE, so that the network device sends the wireless local area network information corresponding to the changed location of the UE to the network element of the mobile network;
  • the MME After the target MME determines the WLAN information corresponding to the location change of the UE, the MME sends a Forward Relocation Request message to the source network side MME, where the Forward Redirection Request message carries the WLAN corresponding to the UE after the location change.
  • Network information ;
  • the source network side MME sends a handover command (Handover Command) message to the source network side eNodeB, where the handover command message carries the wireless local area network information corresponding to the UE location change.
  • Handover Command handover command
  • S704 The source network side eNodeB forwards a handover command message to the UE, where the handover command message is sent by the source network side MME to the source network side eNodeB.
  • S706 The UE determines, according to the policy, whether to initiate a Wi-Fi handover.
  • step S706 can be performed before, after or at the same time as step S705, and there is no sequence, but the Wi-Fi switching can be completed only after the step S705 is performed.
  • the implementation process when the UE performs the location update process is similar to the foregoing process, except that the target network side MME sends a location update response to the UE, where the location update response carries the UE location change.
  • the location update process includes a TAU process or a RAU process.
  • each of the wireless local area networks within the jurisdiction of the network element (for example, the target network side PGW, the target network side SGW, or the target network side eNodeB) of the other mobile network may be pre-configured with the foregoing
  • the mapping relationship between the location information of the WLAN and the WLAN information corresponding to the location change of the UE is sent to the UE by using the forwarding redirection request message or the location update response message during the handover or location update process.
  • the flow of the embodiment is similar, and will be described again here.
  • the UE accesses the mobile network through the LTE access mode.
  • the jurisdiction may be pre-configured on the target network side SGSN, the target network side RNC, or the target network side BSC.
  • a mapping relationship between the WLANs and the location information of the WLANs, and the WLAN information corresponding to the location change of the UE is sent to the UE in the process of the handover or the location update, and the implementation process is the same as the embodiment. Similar, I will not repeat them here.
  • the mapping relationship between the WLANs in the MME and the location information of the WLANs is pre-configured in the MME of the target network, so that the mapping relationship is saved.
  • the configuration of the mapping relationship is collapsed.
  • the target network side MME directly sends the user equipment location change to the user equipment in the handover process or the location update process.
  • the corresponding wireless local area network information ensures that the wireless local area network information on the user equipment can be updated in time, reducing the delay of the user equipment switching the wireless local area network.
  • FIG. 8 the flowchart of the implementation of the sixth embodiment of the method is provided in the embodiment of the present invention.
  • the network element of the mobile network is the target network side MME, and the embodiment is directed to the UE accessing the network.
  • the scenario in which the location of the UE is changed specifically, the UE triggers a handover (Handover) process, and the embodiment includes:
  • the target network side MME acquires the UE Position information after the location change, the location information after the location change of the UE refers to location information after the UE switches to the target network side;
  • the target network side MME sends a forwarding redirection request message to the source network side MME.
  • the source network side MME sends a handover command message to the source network side eNodeB.
  • S804 The source network side eNodeB forwards a handover command message to the UE, where the handover command message is sent by the source network side MME to the source network side eNodeB.
  • the target network side MME determines, according to the changed location information of the UE, the WLAN information corresponding to the location change of the UE, where the WLAN information includes a WLAN SSID or a WLAN BSSID;
  • the target network side MME can obtain the WLAN information corresponding to the location change of the UE in the following manner:
  • the target network side MME pre-configures the mapping relationship between each WLAN in its jurisdiction and the location information of each WLAN.
  • the target network side MME searches for the mapping relationship according to the changed location information of the UE, and obtains the wireless local area network information corresponding to the changed location of the UE;
  • the target network side MME can also obtain the corresponding wireless local area network information after the UE location change by other means, for example, the mapping relationship between the target network side MME and the configured wireless local area network and its location information.
  • the network device sends a request, where the request carries the location information of the changed location of the UE, so that the network device sends the wireless local area network information corresponding to the changed location of the UE to the network element of the mobile network;
  • the MME After the MME determines the WLAN information corresponding to the changed location of the UE, the MME actively pushes the WLAN corresponding to the UE after the location change of the UE;
  • S807 The UE determines, according to the policy, whether to initiate a Wi-Fi handover.
  • the implementation process of the location update process of the UE is similar to the foregoing process, and is not described here.
  • network elements of other mobile networks for example, a target network side PGW, A mapping relationship between each WLAN in the jurisdiction and the location information of each WLAN is pre-configured on the target network side SGW or the target network side eNodeB, and is actively sent to the UE after the handover or location update is performed.
  • the corresponding WLAN information after the location change of the UE is similar to the process of this embodiment, and is not described here.
  • the UE accesses the mobile network through the LTE access mode.
  • the jurisdiction may be pre-configured on the target network side SGSN, the target network side RNC, or the target network side BSC.
  • Embodiment 6 of the method provided by the embodiment of the present invention by pre-configuring a mapping relationship between each WLAN in the jurisdiction and the location information of each WLAN in the target network side MME, so that the mapping relationship is saved.
  • the configuration of the mapping relationship is encapsulated.
  • the target network side MME directly pushes the wireless local area network information corresponding to the location change of the user equipment to the user equipment, thereby ensuring the user.
  • the wireless local area network information on the device can be updated in time, which reduces the delay for the user equipment to switch the wireless local area network.
  • a network element of a mobile network includes: a determining unit 901, configured to determine, according to current location information of a user equipment, information about a wireless local area network corresponding to a current location of the user equipment;
  • the wireless local area network information includes a wireless local area network service set identifier or a wireless local area network basic monthly service set identifier;
  • the sending unit 902 is configured to send the wireless local area network information corresponding to the current location of the user equipment to the user equipment after the determining unit 901 determines the wireless local area network information corresponding to the current location of the user equipment.
  • the network element of the mobile network further includes:
  • a configuration unit configured to pre-configure each wireless local area network within the jurisdiction of the network element of the mobile network
  • the mapping relationship between the network and the location information of the WLAN is performed, so that the determining unit 901 obtains the WLAN information corresponding to the current location of the user equipment according to the mapping relationship pre-configured by the configuration unit.
  • the sending unit 902 further includes:
  • a first sending unit configured to send, by using a radio access bearer creation message, the wireless local area network information corresponding to the current location of the user equipment in the connection establishment process;
  • a second sending unit configured to: after receiving the wireless local area network information request message sent by the user equipment, send a wireless local area network corresponding to the current location of the user equipment to the user equipment by using the wireless local area network information response message Information, wherein the WLAN information request message carries current location information of the user equipment; or
  • the third sending unit is configured to: after the connection establishment is completed, actively push the wireless local area network information corresponding to the current location of the user equipment to the user equipment.
  • the determining unit 901 is further configured to determine, according to the changed location information of the user equipment, the corresponding wireless local area network information after the location change of the user equipment, when the location of the user equipment changes;
  • Shellfish 1 J further transmission unit 902 for transmitting wireless local area network user equipment location information corresponding to the changed user equipment;
  • the sending unit 902 further includes:
  • a fourth sending unit configured to send, by using a forwarding redirect request message or a location update response message, a wireless local area network information corresponding to the location change of the user equipment to the user equipment during the handover or the location update process;
  • the fifth sending unit is configured to actively push the wireless local area network information corresponding to the current location of the user equipment to the user equipment after the handover or the location update is performed.
  • a network element of a mobile network provided by the embodiment of the present invention, by sending a user equipment to a user equipment
  • the wireless local area network information corresponding to the location enables the user equipment to obtain the wireless local area network information corresponding to the current location of the user equipment in time.
  • each wireless local area network within its jurisdiction is pre-configured in the network element of the mobile network.
  • the mapping relationship between the location information of the WLAN is such that the mapping relationship is stored in the network element of the mobile network, and the mapping relationship is configured.
  • the network element of the mobile network can be sent to the user equipment in multiple manners.
  • the WLAN information corresponding to the location of the user equipment makes the manner in which the user equipment obtains the WLAN information corresponding to the location of the user equipment is more flexible.
  • a user equipment includes:
  • the location information providing unit 1001 is configured to provide the network element of the mobile network with current location information of the user equipment.
  • the receiving unit 1002 is configured to receive the wireless local area network information corresponding to the current location of the user equipment that is sent by the network element of the mobile network, where the network element of the mobile network determines the current location information of the user equipment sent by the location information providing unit 1001.
  • the wireless local area network information corresponding to the current location of the user equipment is configured to receive the wireless local area network information corresponding to the current location of the user equipment that is sent by the network element of the mobile network, where the network element of the mobile network determines the current location information of the user equipment sent by the location information providing unit 1001.
  • the wireless local area network information corresponding to the current location of the user equipment.
  • the user equipment further includes:
  • the access determining unit is configured to determine, according to the policy, whether to access the wireless local area network associated with the wireless local area network information corresponding to the current location of the user equipment received by the receiving unit 1002.
  • the location information providing unit 1001 is further configured to provide the network element of the mobile network with location information after the location change of the user equipment;
  • the receiving unit 1002 is further configured to WLAN information corresponding to the user equipment after the network element receives location change of the mobile network in transmission;
  • the user equipment further includes:
  • a handover determining unit configured to determine, according to the policy, whether to switch to a wireless local area network associated with the wireless local area network information corresponding to the changed location of the user equipment received by the receiving unit 1002.
  • the network element of the mobile network sends the wireless local area network information corresponding to the current location of the user equipment to the user equipment, so that the user equipment can Obtaining wireless local area network information corresponding to the current location of the user equipment in time, and pre-configuring a mapping relationship between each wireless local area network in the jurisdiction and the location information of each wireless local area network in the network element of the mobile network, so that the The mapping relationship is stored in the network element of the mobile network, and the configuration of the mapping relationship is centralized.
  • the network element of the mobile network can send the WLAN corresponding to the current location of the user equipment to the user equipment in the process of establishing the connection.
  • the information stream ifies the flow of the user equipment to obtain the wireless local area network information, improves the real-time performance of the user equipment to obtain the wireless local area network information corresponding to the current location of the user equipment, reduces the delay of the user equipment accessing the wireless local area network, and again, moves
  • the network element of the network can In the process of establishing the connection, the wireless local area network information corresponding to the current location of the user equipment is sent to the user equipment after the connection is established, so that the manner in which the user equipment obtains the wireless local area network information corresponding to the current location is more flexible.
  • the network element of the mobile network When the location of the user equipment changes, the network element of the mobile network actively pushes the corresponding wireless local area network information to the user equipment after the location change of the user equipment, so that the wireless local area network information on the user equipment can be updated in time, thereby reducing the user.
  • the device switches the delay of the WLAN, and when the location of the user equipment changes, the network element of the mobile network may send the user to the user equipment after the handover or location update is performed, or after the handover or location update is performed.
  • the corresponding wireless local area network information after the device location is changed, so that the user equipment obtains the corresponding wireless local area network information after the location change is more flexible.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Description

说 明 书
一种获取无线局域网^ ft息的方法 置 技术领域
本发明涉及通信技术领域, 尤其涉及一种获取无线局域网络信息的方法及 装置。
背景技术
随着通信技术的发展, 各种新的宽带无线接入技术不断涌现。 为了保证
3GPP ( The 3rd Generation Partnership Project, 第三代合作伙伴计划)在未来长 时间的竟争力, 3GPP在无线侧提出了 LTE ( Long Term Evolution, 长期演进 ) 计划, 在网络侧提出了 SAE ( System Architecture Evolution, ***架构演进) 计划。 图 1为当前无线演进网络架构图。
如图 1所示, MME( Mobility Management Entity,移动性管理实体)和 SGSN ( Serving GPRS Support Node, 服务 GPRS支持节点) 为移动管理网元, 负责 控制面的移动性管理, 包括用户上下文和移动状态的管理, 用户临时身份标识 的分配以及安全等功能; SGW ( Serving Gateway, 服务网关) 负责空闲状态下 为下行数据发起寻呼, 管理 IP承载参数和网络内路由等信息; PGW ( PDN Gateway, 分组域数据网络网关) 负责 UE ( User Equipment, 用户设备 ) IP地 址的分配。
如图 1所示, 2G网络的无线接入部分为 GERAN( GSM EDGE Radio Access Network, GSM/EDGE无线接入网) , 由 BTS ( Base Transceiver Station, 基站 收发台 )和 BSC ( Base Station Controller, 基站控制器)构成; 3G网络的无线 接入部分为 UTRAN ( Universal Mobile Telecommunication System Territorial Radio Access Network, 通用移动通信***陆地无线接入网) , 由 RNC ( Radio Network Controller, 无线网络控制器)和 NodeB (节点 B )构成; LTE网络的 无线接入部分为 E-UTRAN ( Evolved UTRAN, 演进通用移动通信***陆地无 线接入网) , 由 eNodeB ( evolved NodeB, 演进节点 B )构成。
随着移动技术的发展,移动网络用户数量激增,导致了移动网络负荷过重, 出现了网络拥塞等情况。 WLAN ( Wireless Local Area Network, 无线局域网) 作为一种低成本的移动宽带接入方式, 已成为首选的分流技术。 WLAN网络和 移动网络的融合正成为一种普遍采用的网络建设模式。 同时具有 3GPP接入能 力和 WLAN接入能力的多模 UE在进行 3GPP接入时,由于 UE没有打开 WLAN 开关, 因此并不知道当前所处位置具有 WLAN 网络, 从而不能进行有效地分 流。
为减少多模 UE接入 Wi-Fi ( Wireless Fidelity, 无线保真 )网络时发现选择 过程的时延, SAE网络定义了接入网发现选择功能( Access Network Discovery and Selection Function, 筒称 ANDSF ) 实体。 标准定义的 ANDSF机制中, UE 向接入网发现选择功能实体提供 UE当前的位置信息, 接入网发现选择功能实 体返回与此位置对应的无线局域网络信息。 图 2为采用 ANDSF机制时, UE 使用 Wi-Fi通过可信接入方式接入的流程示意图, 其中,
步骤 S201: UE接入到网络, 获取 IP地址;
步骤 S202: UE与接入网发现选择功能实体建立安全关联;
步骤 S203-步骤 S204: UE获取与其当前位置对应的无线局域网络信息; 步骤 S205: UE根据策略决定是否发起 Wi-Fi接入或切换。
通过对现有技术的分析, 发明人认为现有技术至少存在以下问题: 现有技术中的 ANDSF机制要求预置所有的无线局域网络与其位置的对应 关系才能为 UE提供适合的无线局域网络信息, 而在实际的部署中, 无线局域 网络是动态变化的, 有可能增加、 减少或更替, 无线局域网络与其位置的对应 关系则会相应地改变。 现有技术没有提供有效的机制使得用户设备可以及时获 得其所在位置对应的最新的无线局域网络信息。
发明内容
本发明实施例提供一种获取无线局域网络信息的方法及装置, 使得用户设 备可以及时获得其所在位置对应的无线局域网络信息。
本发明实施例提供的一种获取无线局域网络信息的方法, 该方法包括: 移动网络的网元根据用户设备当前的位置信息, 确定所述用户设备当前位 置对应的无线局域网络信息;
所述移动网络的网元向所述用户设备发送所述用户设备当前位置对应的 无线局域网络信息。 本发明实施例提供的一种移动网络的网元, 包括:
确定单元, 用于根据用户设备当前的位置信息, 确定所述用户设备当前位 置对应的无线局域网络信息;
发送单元, 用于在所述确定单元确定所述用户设备当前位置对应的无线局 域网络信息后, 向所述用户设备发送所述用户设备当前位置对应的无线局域网 络信息。
本发明实施例提供的一种用户设备, 包括:
位置信息提供单元, 用于向移动网络的网元提供用户设备当前的位置信
接收单元, 用于接收所述移动网络的网元发送的所述用户设备当前位置对 应的无线局域网络信息, 其中, 所述移动网络的网元根据所述位置信息提供单 元发送的所述用户设备当前的位置信息, 确定所述用户设备当前位置对应的无 线局域网络信息。
本发明实施例提供的一种获取无线局域网络信息的方法、 移动网络的网元 及用户设备, 通过移动网络的网元向用户设备发送用户设备当前位置对应的无 线局域网络信息, 使得用户设备可以及时获得其所在位置对应的无线局域网络 信息。
附图说明
图 1为当前无线演进网络架构图;
图 2为采用 ANDSF机制时 UE使用 Wi-Fi通过可信接入方式接入的流程示 意图;
图 3为本发明实施例提供的一种获取无线局域网络信息的方法; 图 4为本发明实施例提供的方法实施例二的实现流程图;
图 5为本发明实施例提供的方法实施例三的实现流程图;
图 6为本发明实施例提供的方法实施例四的实现流程图;
图 7为本发明实施例提供的方法实施例五的实现流程图;
图 8为本发明实施例提供的方法实施例六的实现流程图;
图 9为本发明实施例提供的一种移动网络的网元;
图 10为本发明实施例提供的一种用户设备。 具体实施方式
下面将结合本发明实施例中的附图 , 对本发明实施例中的技术方案进行清 楚、 完整地描述。
如图 3所示, 为本发明实施例提供的一种获取无线局域网络信息的方法, 该方法包括:
步骤 S301: 移动网络的网元根据用户设备当前的位置信息, 确定所述用户 设备当前位置对应的无线局域网络信息。
所述移动网络的网元可以通过以下方式获得用户设备当前位置对应的无 线局域网络信息: 所述移动网络的网元预先配置了其管辖范围内的各无线局域 网络与所述各无线局域网络所在位置信息的映射关系, 所述移动网络的网元根 据所述用户设备当前的位置信息查找所述映射关系后, 获得所述用户设备当前 位置对应的无线局域网络信息。
当然, 本领域技术人员可以理解, 所述移动网络的网元还可以通过其他的 途径获得用户设备当前位置对应的无线局域网络信息, 例如, 所述移动网络的 网元向已配置无线局域网络与其所在位置信息的映射关系的网络设备发出请 求, 所述请求携带用户设备当前的位置信息, 以使得所述网络设备向所述移动 网络的网元发送用户设备当前位置对应的无线局域网络信息, 其中, 所述网络 设备可以包括但不限于: eNodeB、 MME、 SGW、 PGW、 RNC、 BSC, SGSN、 ANDSF或各种网关。
其中, 本发明实施例的移动网络的网元可以包括但不限于以下任意之一: ΜΜΕ, SGW, PGW, eNodeB, RNC, BSC, SGSN。
步骤 302: 所述移动网络的网元向所述用户设备发送所述用户设备当前位 置对应的无线局域网络信息。
其中, 所述移动网络的网元向所述用户设备发送所述用户设备当前位置对 应的无线局域网络信息, 具体包括但不限于以下任一方式:
方式一, 拉模型 (pull model ): 所述移动网络的网元在收到用户设备发送 的请求消息后, 向所述用户设备发送所述用户设备当前位置对应的无线局域网 络信息作为响应。
方式二, 推模型 (push modd ): 所述移动网络的网元主动向所述用户设备 推送所述用户设备当前位置对应的无线局域网络信息。
本发明实施例提供的一种获取无线局域网络信息的方法, 通过移动网络的 网元向用户设备发送用户设备当前位置对应的无线局域网络信息, 使得用户设 备能够及时获得用户设备当前位置对应的无线局域网络信息, 另外, 在移动网 络的网元中预先配置其管辖范围内的各无线局域网络与所述各无线局域网络 所在位置信息的映射关系, 使得所述映射关系分布保存在移动网络的网元中, 筒化了所述映射关系的配置, 其次, 移动网络的网元可通过拉模型或推模型向 用户设备发送其所在位置对应的无线局域网络信息, 使得向用户设备发送其所 在位置对应的无线局域网络信息的方式更加灵活。 如图 4所示, 为本发明实施例提供的方法实施例二的实现流程图, 在本实 施例中, 移动网络的网元为 SGW, 该实施例包括:
S401: UE向 MME发送附着请求( Attach Request )或 PDN连接创建请求 ( PDN Connction Setup Request ) 消息, 所述附着请求或 PDN连接创建请求携 带 UE当前的位置信息;
可选地,所述附着请求或 PDN连接创建请求可携带 UE的无线局域网络接 入能力 ( WLAN Capability );
S402: MME向 SGW发送创建会话请求( Create Session Request ) 消息, 所述创建会话请求消息携带 UE当前的位置信息;
可选地, 所述创建会话请求消息携带 UE的无线局域网络接入能力;
S403: SGW向 PGW发送创建会话请求消息;
S404: PGW为 UE分配 IP地址;
PGW向 SGW发送创建会话响应 ( Create Session Response ) 消息;
S405: SGW根据 UE当前的位置信息, 确定 UE当前位置对应的无线局域 网络信息, 所述无线局域网络信息包括无线局域网络服务集标识(Service Set IDentification , 筒称: SSID )或无线局域网络基本月良务集标识( Base Service Set IDentification, 筒称: BSSID );
SGW可以通过以下方式获得 UE当前位置对应的无线局域网络信息: SGW 预先配置了其管辖范围内的各无线局域网络与所述各无线局域网络所在位置 信息的映射关系, 所述 SGW根据 UE当前的位置信息查找所述映射关系后, 获得 UE当前位置对应的无线局域网络信息;
当然, 本领域技术人员可以理解, SGW还可以通过其他的途径获得 UE当 前位置对应的无线局域网络信息, 例如, SGW 向已配置无线局域网络与其所 在位置信息的映射关系的网络设备发出请求, 所述请求携带 UE当前的位置信 息, 以使得所述网络设备向所述移动网络的网元发送 UE当前位置对应的无线 局域网络信息;
SGW确定 UE当前位置对应的无线局域网络信息后, 向 MME发送创建会 话响应消息, 所述创建会话响应消息携带 UE当前位置对应的无线局域网络信
S406: 若 MME接收到 UE发送的附着请求消息, MME向 eNodeB发送初 始化上下文创建请求( Initial Context Setup Request )消息以及附着接受( Attach Accept ) 消息; 或者
若 MME接收到 UE发送的 PDN连接创建请求消息, MME向 eNodeB发 送承载上下文创建请求( Bearer Context Setup Request ) 消息以及 PDN连接创 建响应 ( PDN Connection Setup Response ) 消息;
上述向 eNodeB发送的两种消息中的任意一种消息都可以携带 UE当前位 置对应的无线局域网络信息,例如在 MME接收到 UE发送的附着请求消息时, MME向 eNodeB发送的初始化上下文创建请求消息和附着接受消息任意之一 均可携带 UE当前位置对应的无线局域网络信息;
S407: eNodeB向 UE发送无线资源控制 ( Radio Resource Control , 筒称:
RRC )连接配置消息, 所述无线资源控制连接配置消息携带 UE当前位置对应 的无线局域网络信息;
S408: UE向 eNodeB发送无线资源控制连接配置完成( RRC Connection
Configuration Complete ) 消息;
S409: eNodeB向 MME发送初始化上下文创建响应 ( Initial Context Setup
Response )消息或 载上下文创建响应 ( Bearer Context Setup Response ) 消息 , 具体地:
若 eNodeB接收 MME发送的初始化上下文创建请求消息以及附着接受消 息, eNodeB向 MME发送初始化上下文创建响应消息; 或者
若 eNodeB接收 MME发送的承载上下文创建请求消息以及 PDN连接创建 响应消息, eNodeB向 MME发送 载上下文创建响应消息;
S410: MME向 SGW发送修改会话请求( Modify Session Request ) 消息; S411: MME接收 SGW发送的修改会话响应 ( Modify Session Response ) 消息, 完成连接建立过程;
S412: UE根据策略决定是否发起 Wi-Fi接入;
需要说明的是, 本步骤 S412可在步骤 S409之前、 之后或同时执行, 并不 存在先后顺序, 但只有步骤 S411执行之后才能完成 Wi-Fi接入。
在本实施例中, 还可以在其他的移动网络的网元(例如: PGW, MME或 eNodeB )上预先配置其管辖范围内的各无线局域网络与所述各无线局域网络所 在位置信息的映射关系, 并在连接创建的过程中向 UE发送 UE当前位置对应 的无线局域网络信息,其实现流程与本实施例的流程类似,在此不再——叙述。
在本实施例中, UE通过 LTE接入方式接入移动网络, 对于其他的接入方 式, 如 GERAN或 TURAN, 可在 SGSN, RNC或 BSC上预先配置其管辖范围 内的各无线局域网络与所述各无线局域网络所在位置信息的映射关系, 并在连 接创建的过程中通过无线访问承载创建( Radio access bearer setup ) 消息向 UE 发送 UE当前位置对应的无线局域网络信息, 其实现流程与本实施例的类似, 在此 ^再——叙述„
本发明实施例提供的方法实施例二, 通过 SGW向用户设备发送用户设备 当前位置对应的无线局域网络信息, 使得用户设备能够及时获得用户设备当前 位置对应的无线局域网络信息, 另外, 在 SGW中预先配置其管辖范围内的各 无线局域网络与所述各无线局域网络所在位置信息的映射关系, 使得所述映射 关系分布保存在 SGW中, 筒化了该映射关系的配置, 其次, SGW直接在连接 建立过程中向用户设备发送所述用户设备当前位置对应的无线局域网络信息, 筒化了用户设备获得无线局域网络信息的流程, 提高了用户设备获得用户设备 当前位置对应的无线局域网络信息的实时性, 减少了用户设备接入无线局域网 络的时延。 如图 5所示, 为本发明实施例提供的方法实施例三的实现流程图, 在本实 施例中, 移动网络的网元为 PGW, 该实施例包括:
S501: UE向 MME发送附着请求消息或 PDN连接创建请求消息; S502: MME向 SGW发送创建会话请求消息;
S503: SGW向 PGW发送创建会话请求消息;
S504: PGW为 UE分配 IP地址, 并向 SGW发送创建会话响应消息; S505: SGW向 MME发送创建会话响应消息;
S506: 若 MME接收到 UE发送的附着请求消息, MME向 eNodeB发送初 始化上下文创建请求消息以及附着接受消息; 或者
若 MME接收到 UE发送的 PDN连接创建请求消息, MME向 eNodeB发 送承载上下文创建请求消息以及 PDN连接创建响应消息;
S507: eNodeB向 UE发送无线资源控制连接配置消息;
S508: UE向 eNodeB发送无线资源控制连接配置完成消息;
S509: eNodeB向 MME发送初始化上下文创建响应消息或? 载上下文创建 响应消息, 具体地:
若 eNodeB接收 MME发送的初始化上下文创建请求消息以及附着接受消 息, eNodeB向 MME发送初始化上下文创建响应消息; 或者
若 eNodeB接收 MME发送的承载上下文创建请求消息以及 PDN连接创建 响应消息, eNodeB向 MME发送 载上下文创建响应消息;
S510: MME向 SGW发送修改会话请求消息;
S511: MME接收 SGW发送的修改会话响应消息, 完成连接建立过程; S512: UE向 PGW发送无线局域网络信息请求消息, 所述无线局域网络信 息请求消息携带 UE当前的位置信息;
可选地, 所述无线局域网络信息请求消息可携带 UE的无线局域网络接入 能力;
需要说明的是, 本步骤 S512可在步骤 S509之前、 之后或同时执行, 并不 存在先后顺序, 但只有步骤 S511执行之后才能完成无线局域网络信息的发送;
S513: PGW根据 UE当前的位置信息, 确定 UE当前位置对应的无线局域 网络信息, 所述无线局域网络信息包括无线局域网络服务集标识或无线局域网 络基本服务集标识;
PGW可以通过以下方式获得 UE当前位置对应的无线局域网络信息: PGW 预先配置了其管辖范围内的各无线局域网络与所述各无线局域网络所在位置 信息的映射关系, 所述 PGW根据 UE当前的位置信息查找所述映射关系后, 获得 UE当前位置对应的无线局域网络信息;
当然, 本领域技术人员可以理解, PGW还可以通过其他的途径获得 UE当 前位置对应的无线局域网络信息, 例如, PGW 向已配置无线局域网络与其所 在位置信息的映射关系的网络设备发出请求, 所述请求携带 UE当前的位置信 息, 以使得所述网络设备向所述移动网络的网元发送 UE当前位置对应的无线 局域网络信息;
PGW确定 UE当前位置对应的无线局域网络信息后, 向 UE发送无线局域 网络信息响应消息, 所述无线局域网络信息响应消息携带 UE当前位置对应的 无线局域网络信息;
S514: UE根据策略决定是否发起 Wi-Fi接入。
在本实施例中, 还可以在其他的移动网络的网元(例如: SGW, MME或 eNodeB )上预先配置其管辖范围内的各无线局域网络与所述各无线局域网络所 在位置信息的映射关系, 并根据用户设备发送的无线局域网络信息请求消息, 向用户设备发送无线局域网络信息响应消息, 其实现流程与本实施例的流程类 似, 在此不再——叙述。
在本实施例中, UE通过 LTE接入方式接入移动网络, 对于其他的接入方 式, 如 GERAN或 TURAN, 可在 SGSN, RNC或 BSC上预先配置其管辖范围 内的各无线局域网络与所述各无线局域网络所在位置信息的映射关系, 并根据 用户设备发送的无线局域网络信息请求消息, 向用户设备发送无线局域网络信 息响应消息, 其实现流程与本实施例的类似, 在此不再——叙述。
本发明实施例提供的的方法实施例三, 通过在连接建立完成后, 向 PGW 请求用户设备当前位置对应的无线局域网络信息, 使得用户设备能够及时获得 用户设备当前位置对应的无线局域网络信息, 另外, 在 PGW中预先配置其管 辖范围内的各无线局域网络与所述各无线局域网络所在位置信息的映射关系, 使得所述映射关系分布保存在 PGW中, 筒化了该映射关系的配置。 如图 6所示, 为本发明实施例提供的方法实施例四的实现流程图, 在本实 施例中, 移动网络的网元为 MME, 该实施例包括:
S601: UE向 MME发送附着请求消息或 PDN连接创建请求消息, 所述附 着请求或 PDN连接创建请求携带 UE当前的位置信息;
S602: MME向 SGW发送创建会话请求消息;
S603: SGW向 PGW发送创建会话请求消息;
S604: PGW为 UE分配 IP地址, 并向 SGW发送创建会话响应消息; S605: SGW向 MME发送创建会话响应消息;
S606: 若 MME接收到 UE发送的附着请求消息, MME向 eNodeB发送初 始化上下文创建请求消息以及附着接受消息; 或者
若 MME接收到 UE发送的 PDN连接创建请求消息, MME向 eNodeB发 送承载上下文创建请求消息以及 PDN连接创建响应消息;
S607: eNodeB向 UE发送无线资源控制连接配置消息;
S608: UE向 eNodeB发送无线资源控制连接配置完成消息; S609: eNodeB向 MME发送初始化上下文创建响应消息或 载上下文创建 响应消息, 具体地:
若 eNodeB接收 MME发送的初始化上下文创建请求消息以及附着接受消 息, eNodeB向 MME发送初始化上下文创建响应消息; 或者
若 eNodeB接收 MME发送的承载上下文创建请求消息以及 PDN连接创建 响应消息, eNodeB向 MME发送 载上下文创建响应消息;
S610: MME向 SGW发送修改会话请求消息;
S611: MME接收 SGW发送的修改会话响应消息, 完成连接建立过程;
S612: MME根据 UE当前的位置信息,确定 UE当前位置对应的无线局域 网络信息, 所述无线局域网络信息包括无线局域网络服务集标识或无线局域网 络基本服务集标识;
MME可以通过以下方式获得 UE当前位置对应的无线局域网络信息: MME 预先配置了其管辖范围内的各无线局域网络与所述各无线局域网络所在位置 信息的映射关系, 所述 MME根据 UE当前的位置信息查找所述映射关系后, 获得 UE当前位置对应的无线局域网络信息;
当然, 本领域技术人员可以理解, MME还可以通过其他的途径获得 UE 当前位置对应的无线局域网络信息, 例如, MME 向已配置无线局域网络与其 所在位置信息的映射关系的网络设备发出请求, 所述请求携带 UE当前的位置 信息, 以使得所述网络设备向所述移动网络的网元发送 UE当前位置对应的无 线局域网络信息;
MME确定 UE当前位置对应的无线局域网络信息后, 主动向 UE推送 UE 当前位置对应的无线局域网络信息;
S613: UE根据策略决定是否发起 Wi-Fi接入。
在本实施例中, 还可以在其他的移动网络的网元(例如: SGW, PGW或 eNodeB )上预先配置其管辖范围内的各无线局域网络与所述各无线局域网络所 在位置信息的映射关系, 并在连接建立完成后, 主动向 UE推送 UE当前位置 对应的无线局域网络信息, 其实现流程与本实施例的流程类似, 在此不再—— 叙述。
在本实施例中, UE通过 LTE接入方式接入移动网络, 对于其他的接入方 式, 如 GERAN或 TURAN, 可在 SGSN, RNC或 BSC上预先配置其管辖范围 内的各无线局域网络与所述各无线局域网络所在位置信息的映射关系, 并在连 接建立完成后, 主动向 UE推送 UE当前位置对应的无线局域网络信息, 其实 现流程与本实施例的类似, 在此不再——叙述。
本发明实施例提供的方法实施例四, 通过 MME主动向用户设备推送用户 设备当前位置对应的无线局域网络信息, 使得用户设备能够及时获得用户设备 当前位置对应的无线局域网络信息, 提高了用户设备获得用户设备当前位置对 应的无线局域网络信息的实时性, 减少了用户设备接入无线局域网络的时延, 另外, 在 MME中预先配置其管辖范围内的各无线局域网络与所述各无线局域 网络所在位置信息的映射关系, 使得所述映射关系分布保存在 MME中, 筒化 了该映射关系的配置。 如图 7所示, 为本发明实施例提供方法实施例五的实现流程图, 在本实施 例中, 移动网络的网元为目标网络侧 MME, 本发明实施例将 UE移动前所在 的网络称为源网络侧, 将 UE移动后所在的网络称为目标网络侧, 本实施例针 对 UE接入网络后, 所述 UE的位置发生改变的场景, 具体地, 以 UE触发切 换( Handover ) 流程为例, 该实施例包括:
S701: 切换准备( Handover Preparation ) P介段, 目标网络侧 MME获取 UE 的位置改变后的位置信息, 所述 UE的位置改变后的位置信息是指 UE切换到 目标网络侧之后的位置信息;
S702: 目标网络侧 MME根据 UE的位置改变后的位置信息, 确定 UE位 置改变后对应的无线局域网络信息, 所述无线局域网络信息包括 WLAN SSID 或 WLAN BSSID;
目标网络侧 MME可以通过以下方式获得 UE位置改变后对应的无线局域 网络信息: 目标网络侧 MME预先配置了其管辖范围内的各无线局域网络与所 述各无线局域网络所在位置信息的映射关系, 所述目标网络侧 MME根据 UE 的位置改变后的位置信息查找所述映射关系后, 获得 UE位置改变后对应的无 线局域网络信息;
当然, 本领域技术人员可以理解, 目标网络侧 MME还可以通过其他的途 径获得 UE位置改变后对应的无线局域网络信息, 例如, 目标网络侧 MME向 已配置无线局域网络与其所在位置信息的映射关系的网络设备发出请求, 所述 请求携带 UE的位置改变后的位置信息, 以使得所述网络设备向所述移动网络 的网元发送 UE位置改变后对应的无线局域网络信息;
目标网络侧 MME确定 UE位置改变后对应的无线局域网络信息后, 向源 网络侧 MME发送转发重定向请求( Forward Relocation Request )消息, 所述转 发重定向请求消息携带 UE位置改变后对应的无线局域网络信息;
S703 : 源网络侧 MME 向源网络侧 eNodeB 发送切换命令 ( Handover Command )消息, 所述切换命令消息携带 UE位置改变后对应的无线局域网络 信息;
S704: 源网络侧 eNodeB向 UE转发切换命令消息, 所述切换命令消息为 源网络侧 MME向源网络侧 eNodeB发送的;
S705: 切换执行 ( Handover execution ) P介段;
S706: UE根据策略决定是否发起 Wi-Fi切换;
需要说明的是, 本步骤 S706可在步骤 S705之前、 之后或同时执行, 并不 存在先后顺序, 但只有步骤 S705执行之后才能完成 Wi-Fi切换。
在 UE发生位置更新流程时的实现流程与上述流程类似, 不同之处在于目 标网络侧 MME向 UE发送位置更新响应, 所述位置更新响应携带 UE位置改 变后对应的无线局域网络信息,其中,所述位置更新流程包括 TAU流程或 RAU 流程。
在本实施例中,还可以在其他的移动网络的网元(例如: 目标网络侧 PGW, 目标网络侧 SGW或目标网络侧 eNodeB )上预先配置其管辖范围内的各无线局 域网络与所述各无线局域网络所在位置信息的映射关系, 并在切换或位置更新 的过程中, 通过转发重定向请求消息或者位置更新响应消息向 UE发送 UE位 置改变后对应的无线局域网络信息, 其实现流程与本实施例的流程类似, 在此 ^再 叙述。
在本实施例中, UE通过 LTE接入方式接入移动网络, 对于其他接入方式, 如 GERAN或 UTRAN, 可在目标网络侧 SGSN, 目标网络侧 RNC或目标网络 侧 BSC上预先配置其管辖范围内的各无线局域网络与所述各无线局域网络所 在位置信息的映射关系, 并在切换或位置更新的过程中向 UE发送 UE位置改 变后对应的无线局域网络信息,其实现流程与本实施例的类似,在此不再赘述。
本发明实施例提供的方法实施例五, 通过在目标网络侧 MME中预先配置 其管辖范围内的各无线局域网络与所述各无线局域网络所在位置信息的映射 关系, 使得所述映射关系分布保存在目标网络侧 MME中, 筒化了该映射关系 的配置, 另外, 在用户设备位置发生改变时, 目标网络侧 MME直接在切换过 程或者位置更新过程中向用户设备发送所述用户设备位置改变后对应的无线 局域网络信息, 保证了用户设备上的无线局域网络信息能够被及时更新, 减少 了用户设备切换无线局域网络的时延。 如图 8所示, 为本发明实施例提供的方法实施例六的实现流程图, 在本实 施例中, 移动网络的网元为目标网络侧 MME, 本实施例针对 UE接入网络后, 所述 UE的位置发生改变的场景, 具体地, 以 UE触发切换 ( Handover ) 流程 为例, 该实施例包括:
S801: 切换准备( Handover Preparation ) P介段, 目标网络侧 MME获取 UE 的位置改变后的位置信息, 所述 UE的位置改变后的位置信息指 UE切换到目 标网络侧之后的位置信息;
S802: 目标网络侧 MME向源网络侧 MME发送转发重定向请求消息;
S803: 源网络侧 MME向源网络侧 eNodeB发送切换命令消息;
S804: 源网络侧 eNodeB向 UE转发切换命令消息, 所述切换命令消息为 源网络侧 MME向源网络侧 eNodeB发送的;
S805: 切换执行阶段;
S806: 目标网络侧 MME根据 UE的位置改变后的位置信息, 确定与 UE 位置改变后对应的无线局域网络信息, 所述无线局域网络信息包括 WLAN SSID或 WLAN BSSID;
目标网络侧 MME可以通过以下方式获得 UE位置改变后对应的无线局域 网络信息: 目标网络侧 MME预先配置了其管辖范围内的各无线局域网络与所 述各无线局域网络所在位置信息的映射关系, 所述目标网络侧 MME根据 UE 的位置改变后的位置信息查找所述映射关系后, 获得 UE位置改变后对应的无 线局域网络信息;
当然, 本领域技术人员可以理解, 目标网络侧 MME还可以通过其他的途 径获得 UE位置改变后对应的无线局域网络信息, 例如, 目标网络侧 MME向 已配置无线局域网络与其所在位置信息的映射关系的网络设备发出请求, 所述 请求携带 UE的位置改变后的位置信息, 以使得所述网络设备向所述移动网络 的网元发送 UE位置改变后对应的无线局域网络信息;
目标网络侧 MME确定 UE位置改变后对应的无线局域网络信息后, 主动 向 UE推送 UE位置改变后对应的无线局域网络信息;
S807: UE根据策略决定是否发起 Wi-Fi切换。
在 UE发生位置更新流程时的实现流程与上述流程类似, 在此不再赘述。 在本实施例中,还可以在其他的移动网络的网元(例如: 目标网络侧 PGW, 目标网络侧 SGW或目标网络侧 eNodeB )上预先配置其管辖范围内的各无线局 域网络与所述各无线局域网络所在位置信息的映射关系, 并在切换或位置更新 执行完之后, 主动向 UE发送 UE位置改变后对应的无线局域网络信息, 其实 现流程与本实施例的流程类似, 在此不再——叙述。
在本实施例中, UE通过 LTE接入方式接入移动网络, 对于其他接入方式, 如 GERAN或 UTRAN, 可在目标网络侧 SGSN, 目标网络侧 RNC或目标网络 侧 BSC上预先配置其管辖范围内的各无线局域网络与所述各无线局域网络所 在位置信息的映射关系,并在切换或位置更新执行完之后,主动向 UE发送 UE 位置改变后对应的无线局域网络信息, 其实现流程与本实施例的类似, 在此不 再赘述。
本发明实施例提供的方法实施例六, 通过在目标网络侧 MME中预先配置 其管辖范围内的各无线局域网络与所述各无线局域网络所在位置信息的映射 关系, 使得所述映射关系分布保存在目标网络侧 MME中, 筒化了该映射关系 的配置, 另外, 在用户设备位置发生改变时, 目标网络侧 MME直接向用户设 备推送用户设备位置改变后对应的无线局域网络信息, 保证了用户设备上的无 线局域网络信息能够被及时更新, 减少了用户设备切换无线局域网络的时延。 如图 9所示, 为本发明实施例提供的一种移动网络的网元, 包括: 确定单元 901 , 用于根据用户设备当前的位置信息, 确定用户设备当前位 置对应的无线局域网络信息;
所述无线局域网络信息包括无线局域网络服务集标识或无线局域网络基 本月良务集标识;
发送单元 902, 用于在确定单元 901确定用户设备当前位置对应的无线局 域网络信息后, 向用户设备发送用户设备当前位置对应的无线局域网络信息。
所述移动网络的网元还包括:
配置单元, 用于预先配置所述移动网络的网元管辖范围内的各无线局域网 络与所述各无线局域网络所在位置信息的映射关系, 以便于确定单元 901根据 该配置单元预先配置的映射关系获得所述用户设备当前位置对应的无线局域 网络信息。
在本实施例中, 发送单元 902进一步包括:
第一发送单元, 用于在连接建立过程中, 通过创建会话响应消息, 或者通 过无线接入承载创建消息向用户设备发送用户设备当前位置对应的无线局域 网络信息; 或者
第二发送单元, 用于在连接建立完成后, 在接收到所述用户设备发送的无 线局域网络信息请求消息后, 通过无线局域网络信息响应消息向用户设备发送 用户设备当前位置对应的无线局域网络信息, 其中, 所述无线局域网络信息请 求消息携带所述用户设备当前的位置信息; 或者
第三发送单元, 用于在连接建立完成后, 主动向用户设备推送用户设备当 前位置对应的无线局域网络信息。
在本实施例中, 确定单元 901还用于在用户设备的位置发生改变时, 根据 用户设备的位置改变后的位置信息, 确定用户设备位置改变后对应的无线局域 网络信息;
1 J , 发送单元 902还用于向用户设备发送用户设备位置改变后对应的无线 局域网络信息;
其中, 发送单元 902还进一步包括:
第四发送单元, 用于在切换或位置更新过程中, 通过转发重定向请求消息 或者位置更新响应消息, 向用户设备发送用户设备位置改变后对应的无线局域 网络信息; 或者
第五发送单元, 用于在切换或位置更新执行完之后, 主动向用户设备推送 用户设备当前位置对应的无线局域网络信息。
本发明实施例提供的一种移动网络的网元, 通过向用户设备发送用户设备 所在位置对应的无线局域网络信息, 使得用户设备能够及时获得用户设备当前 位置对应的无线局域网络信息, 另外, 在移动网络的网元中预先配置其管辖范 围内的各无线局域网络与所述各无线局域网络所在位置信息的映射关系, 使得 所述映射关系分布保存在移动网络的网元中,筒化了该映射关系的配置,其次, 移动网络的网元可通过多种方式向用户设备发送用户设备所在位置对应的无 线局域网络信息, 使得用户设备获得其所在位置对应的无线局域网络信息的方 式更加灵活, 再次, 在用户设备位置发生改变时, 移动网络的网元在切换或位 置更新的过程中, 向用户设备发送用户设备位置改变后对应的无线局域网络信 息, 筒化了用户设备获得位置改变后对应的无线局域网络信息的流程, 保证了 用户设备上的无线局域网络信息能够被及时更新, 减少了用户设备切换无线局 域网络的时延。 如图 10所示, 为本发明实施例提供的一种用户设备, 包括:
位置信息提供单元 1001 ,用于向移动网络的网元提供该用户设备当前的位 置信息;
接收单元 1002,用于接收移动网络的网元发送的用户设备当前位置对应的 无线局域网络信息, 其中, 所述移动网络的网元根据位置信息提供单元 1001 发送的用户设备当前的位置信息, 确定该用户设备当前位置对应的无线局域网 络信息。
在本实施例中, 该用户设备还包括:
接入判断单元, 用于根据策略判断是否接入与接收单元 1002接收的用户 设备当前位置对应的无线局域网络信息关联的无线局域网络。
在本实施例中, 位置信息提供单元 1001 还用于向移动网络的网元提供该 用户设备的位置改变后的位置信息;
1 J , 接收单元 1002还用于接收移动网络的网元发送的该用户设备位置改 变后对应的无线局域网络信息; 其中, 该用户设备还进一步包括:
切换判断单元, 用于根据策略判断是否切换到与接收单元 1002接收的用 户设备位置改变后对应的无线局域网络信息关联的无线局域网络。
本发明实施例提供的一种获取无线局域网络信息的方法、 移动网络的网元 及用户设备, 通过移动网络的网元向用户设备发送用户设备当前位置对应的无 线局域网络信息, 使得用户设备能够及时获得用户设备当前位置对应的无线局 域网络信息, 另外, 在移动网络的网元中预先配置其管辖范围内的各无线局域 网络与所述各无线局域网络所在位置信息的映射关系, 使得所述映射关系分布 保存在移动网络的网元中, 筒化了该映射关系的配置, 其次, 移动网络的网元 可在连接建立的过程中向用户设备发送所述用户设备当前位置对应的无线局 域网络信息, 筒化了用户设备获得无线局域网络信息的流程, 提高了用户设备 获得用户设备当前位置对应的无线局域网络信息的实时性, 减少了用户设备接 入无线局域网络的时延, 再次, 移动网络的网元可在连接建立的过程中, 也可 在连接建立完成后向用户设备发送所述用户设备当前位置对应的无线局域网 络信息, 使得用户设备获得其当前位置对应的无线局域网络信息的方式更加灵 活, 此外, 在用户设备位置发生改变时, 移动网络的网元主动向用户设备推送 所述用户设备位置改变后对应的无线局域网络信息, 保证了用户设备上的无线 局域网络信息能够被及时更新, 减少了用户设备切换无线局域网络的时延, 并 且, 在用户设备的位置发生改变时, 移动网络的网元可在切换或位置更新的过 程中, 也可在切换或位置更新执行完之后向用户设备发送用户设备位置改变后 对应的无线局域网络信息, 使得用户设备获得其位置改变后对应的无线局域网 络信息的方式更加灵活。
总之, 以上所述仅为本发明技术方案的较佳实施例而已, 并非用于限定本 发明的保护范围。凡在本发明的精神和原则之内, 所作的任何修改、等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1、 一种获取无线局域网络信息的方法, 其特征在于, 该方法包括: 移动网络的网元根据用户设备当前的位置信息, 确定所述用户设备当前位 置对应的无线局域网络信息;
所述移动网络的网元向所述用户设备发送所述用户设备当前位置对应的 无线局域网络信息。
2、 根据权利要求 1所述的方法, 其特征在于, 所述方法还包括: 预先配置所述移动网络的网元管辖范围内的各无线局域网络与所述各无 线局域网络所在位置信息的映射关系;
1 J , 所述移动网络的网元根据所述用户设备当前的位置信息, 确定所述用 户设备当前位置对应的无线局域网络信息, 包括:
所述移动网络的网元根据所述用户设备当前的位置信息查找所述映射关 系后, 获得所述用户设备当前位置对应的无线局域网络信息。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述移动网络的网元 向所述用户设备发送所述用户设备当前位置对应的无线局域网络信息, 包括: 在连接建立过程中, 所述移动网络的网元通过创建会话响应消息, 或者通 过无线接入承载创建消息向所述用户设备发送所述用户设备当前位置对应的 无线局域网络信息。
4、 根据权利要求 1或 2所述的方法, 其特征在于, 所述移动网络的网元 向所述用户设备发送所述用户设备当前位置对应的无线局域网络信息, 包括: 在连接建立完成后, 所述移动网络的网元在接收到所述用户设备发送的无 线局域网络信息请求消息后, 通过无线局域网络信息响应消息向所述用户设备 发送所述用户设备当前位置对应的无线局域网络信息, 其中, 所述无线局域网 络信息请求消息携带所述用户设备当前的位置信息。
5、 根据权利要求 1或 2所述的方法, 其特征在于, 所述移动网络的网元 向所述用户设备发送所述用户设备当前位置对应的无线局域网络信息, 包括: 在连接建立完成后, 所述移动网络的网元主动向所述用户设备推送所述用 户设备当前位置对应的无线局域网络信息。
6、 根据权利要求 1-5中任一权利要求所述的方法, 其特征在于, 还包括: 若所述用户设备的位置发生改变, 所述移动网络的网元根据所述用户设备 的位置改变后的位置信息, 确定所述用户设备位置改变后对应的无线局域网络 信息;
所述移动网络的网元向所述用户设备发送所述用户设备位置改变后对应 的无线局域网络信息。
7、 根据权利要求 6所述的方法, 其特征在于, 所述移动网络的网元向所 述用户设备发送所述用户设备位置改变后对应的无线局域网络信息, 包括: 所述移动网络的网元在切换或位置更新的过程中, 通过转发重定向请求消 息或者位置更新响应消息, 向所述用户设备发送所述用户设备位置改变后对应 的无线局域网络信息。
8、 根据权利要求 6所述的方法, 其特征在于, 所述移动网络的网元向所 述用户设备发送所述用户设备位置改变后对应的无线局域网络信息, 包括: 所述移动网络的网元在切换或位置更新执行完之后, 主动向所述用户设备 推送所述用户设备当前位置对应的无线局域网络信息。
9、根据权利要求 1-5中任一项权利要求所述的方法, 其特征在于, 所述移 动网络的网元向所述用户设备发送所述用户设备当前位置对应的无线局域网 络信息之后, 还包括:
所述用户设备根据策略决定是否接入与所述用户设备当前位置对应的所 述无线局域网络信息关联的无线局域网络。
10、 根据权利要求 6-8中任一项权利要求所述的方法, 其特征在于, 所述 移动网络的网元向所述用户设备发送所述用户设备位置改变后对应的无线局 域网络信息之后, 还包括:
所述用户设备根据策略决定是否切换到与所述用户设备位置改变后对应 的无线局域信息关联的无线局域网络。
11、 一种移动网络的网元, 其特征在于, 包括:
确定单元, 用于根据用户设备当前的位置信息, 确定所述用户设备当前位 置对应的无线局域网络信息;
发送单元, 用于在所述确定单元确定所述用户设备当前位置对应的无线局 域网络信息后, 向所述用户设备发送所述用户设备当前位置对应的无线局域网 络信息。
12、 根据权利要求 11所述的网元, 其特征在于, 还包括:
配置单元, 用于预先配置所述网元管辖范围内的各无线局域网络与所述各 无线局域网络所在位置信息的映射关系, 以便于所述确定单元根据所述配置单 元预先配置的映射关系获得所述用户设备当前位置对应的无线局域网络信息。
13、根据权利要求 11或 12所述的网元, 其特征在于, 所述发送单元包括: 第一发送单元, 用于在连接建立过程中, 通过创建会话响应消息, 或者通 过无线接入承载创建消息向所述用户设备发送所述用户设备当前位置对应的 无线局域网络信息; 或者
第二发送单元, 用于在连接建立完成后, 在接收到所述用户设备发送的无 线局域网络信息请求消息后, 通过无线局域网络信息响应消息向所述用户设备 发送所述用户设备当前位置对应的无线局域网络信息, 其中, 所述无线局域网 络信息请求消息携带所述用户设备当前的位置信息; 或者
第三发送单元, 用于在连接建立完成后, 主动向所述用户设备推送所述用 户设备当前位置对应的无线局域网络信息。
14、 根据权利要求 11或 12或 13所述的网元, 其特征在于, 所述确定单 元还用于在所述用户设备的位置发生改变时, 根据所述用户设备的位置改变后 的位置信息, 确定所述用户设备位置改变后对应的无线局域网络信息; 则, 所述发送单元还用于向所述用户设备发送所述用户设备位置改变后对 应的无线局域网络信息。
15、 根据权利要求 14所述的网元, 其特征在于, 所述发送单元还包括: 第四发送单元, 用于在切换或位置更新过程中, 通过转发重定向请求消息 或者位置更新响应消息, 向所述用户设备发送所述用户设备位置改变后对应的 无线局域网络信息; 或者
第五发送单元, 用于在切换或位置更新执行完之后, 主动向所述用户设备 推送所述用户设备当前位置对应的无线局域网络信息。
16、 一种用户设备, 其特征在于, 包括:
位置信息提供单元, 用于向移动网络的网元提供用户设备当前的位置信 接收单元, 用于接收所述移动网络的网元发送的所述用户设备当前位置对 应的无线局域网络信息, 其中, 所述移动网络的网元根据所述位置信息提供单 元发送的所述用户设备当前的位置信息, 确定所述用户设备当前位置对应的无 线局域网络信息。
17、 根据权利要求 16所述的用户设备, 其特征在于, 还包括:
接入判断单元, 用于根据策略判断是否接入与所述接收单元接收的用户设 备当前位置对应的无线局域网络信息关联的无线局域网络。
18、 根据权利要求 16或 17所述的用户设备, 其特征在于, 所述位置信息 提供单元还用于向所述移动网络的网元提供所述用户设备的位置改变后的位 置信息;
贝 |J , 所述接收单元还用于接收所述移动网络的网元发送的所述用户设备位 置改变后对应的无线局域网络信息, 其中, 所述移动网络的网元才艮据所述位置 信息提供单元发送的所述用户设备的位置改变后的位置信息, 确定所述用户设 备位置改变后对应的无线局域网络信息。
19、 根据权利要求 18所述的用户设备, 其特征在于, 还包括:
切换判断单元, 用于根据策略判断是否切换到与所述接收单元接收的用户 设备位置改变后对应的无线局域网络信息关联的无线局域网络。
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