WO2015003323A1 - 网络选择的方法、装置和系统 - Google Patents

网络选择的方法、装置和系统 Download PDF

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Publication number
WO2015003323A1
WO2015003323A1 PCT/CN2013/079061 CN2013079061W WO2015003323A1 WO 2015003323 A1 WO2015003323 A1 WO 2015003323A1 CN 2013079061 W CN2013079061 W CN 2013079061W WO 2015003323 A1 WO2015003323 A1 WO 2015003323A1
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WO
WIPO (PCT)
Prior art keywords
wlan
network
access
information
selection information
Prior art date
Application number
PCT/CN2013/079061
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English (en)
French (fr)
Inventor
靳维生
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/CN2013/079061 priority Critical patent/WO2015003323A1/zh
Priority to CN201380001049.2A priority patent/CN104471988A/zh
Priority to EP13889112.2A priority patent/EP3001733A4/en
Publication of WO2015003323A1 publication Critical patent/WO2015003323A1/zh
Priority to US14/991,165 priority patent/US20160119861A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/02Access restriction performed under specific conditions
    • H04W48/06Access restriction performed under specific conditions based on traffic conditions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10Small scale networks; Flat hierarchical networks
    • H04W84/12WLAN [Wireless Local Area Networks]

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, apparatus, and system for network selection. Background technique
  • WLAN Wireless Local Area Network
  • LTE Long Term Evolution
  • an WLAN AP Access Point
  • a small base station of a cellular network such as a femto celK pico cell or a micro cell
  • an WLAN AP Access Point
  • the UE User Equipment
  • the UE can scan and access the WLAN through the internal WLAN module.
  • the UE User Equipment
  • the continuous scanning of the UE and the attempt to access the surrounding WLAN AP not only consume system resources, but also increase power consumption.
  • the UE automatically accesses the malicious network, it may also pose a security risk.
  • WLAN and 3GPP (3rd Generation Partnership Project) RAT Radio Access Technology
  • WLAN module is turned off. Therefore, how to implement the effective discovery and selection of the WLAN AP by the UE is an urgent problem to be solved.
  • the 3GPP introduces the ANDSF (Access Network Discovery Support Functions) mechanism to deliver access network discovery information and cross-system mobility policies through the user plane-based ANDSF entity disposed in the core network.
  • Cross-system routing policy Waiting for the UE the UE decides to open the WLAN module, select and access the specific network under the appropriate conditions.
  • the ANDSF sends information and policies to the UE through the core network server, and the interaction not only increases the delay and network burden, but also the location network topology of the various wireless local area networks cannot be obtained in time and accurately.
  • the state, its efficiency is low, and when the UE triggers the utilization strategy and execution, the UE implements itself and the behavior is uncontrollable.
  • the invention provides a method, a device and a system for selecting a network, so as to improve the efficiency of the UE accessing the network and control the behavior of the UE.
  • the technical solution is as follows:
  • the present invention provides a method for network selection, including:
  • the access node of the cellular access network After the user equipment UE is accessed from the cellular access network, the access node of the cellular access network acquires WLAN selection information of the wireless local area network, where the WLAN selection information includes priority information, where the priority information is used to indicate that the UE is used by the UE.
  • the WLAN access is preferentially accessed by using the cellular access network; the access node of the cellular access network selects a WLAN network for the UE according to the priority information, where the access priority of the selected WLAN network is prioritized Level higher than the cellular access network;
  • the cellular access network access node instructs the UE to access the selected WLAN network.
  • the access priority of the selected WLAN network is higher than that of the cellular access network, and the UE accessing the WLAN network is prior to accessing the cellular access network.
  • the priority information includes priority information of at least two WLAN networks
  • Selecting a WLAN network for the UE according to the priority information including:
  • the WLAN network with the highest priority among the at least two WLAN networks selecting, according to the priority information of the at least two WLAN networks, the WLAN network with the highest priority among the at least two WLAN networks.
  • the WLAN selection information further includes a load condition
  • Selecting a WLAN network for the UE according to the priority information including:
  • the WLAN selection information Also including load information of the at least two WLAN networks;
  • Selecting a WLAN network for the UE according to the priority information including:
  • Wi-Fi network Alternatively, you can choose a WLAN network with a priority that is not the highest and not the lowest, and the load is not the lowest but not the highest.
  • the WLAN selection information further includes a signal quality condition
  • Selecting a WLAN network for the UE according to the priority information including:
  • the WLAN network selecting, according to the priority information and the signal quality condition, the WLAN network, wherein the signal received by the UE in the selected WLAN network satisfies the signal quality condition.
  • the WLAN selection information further includes signal quality information of the at least two WLAN networks
  • Selecting a WLAN network for the UE according to the priority information including:
  • the WLAN network with the highest priority and the best signal quality among the at least two WLAN networks can choose a WLAN network whose priority is not the highest and not the lowest, and the signal quality is not the best but not the worst.
  • the quality of a signal can be judged by the strength of the signal. The highest signal strength indicates the best signal quality and the lowest signal strength, indicating the worst signal quality.
  • the signal quality can also be expressed by other parameters, such as bit error rate. The higher the bit error rate, the worse the signal quality, and the lower the bit error rate, the better the signal quality.
  • the WLAN selection information further includes a location condition
  • Selecting a WLAN network for the UE according to the priority information including:
  • a WLAN network for the UE, wherein the UE is located within an area indicated in the location condition or outside an area indicated in the location condition.
  • the WLAN selection information further includes a domain name of the service provider
  • the cellular access network access node instructs the UE to access the selected WLAN network, and the packet Includes:
  • the cellular access network access node instructs the UE to access the selected WLAN network provided by the service provider.
  • the cellular access network access node acquires WLAN selection information of the wireless local area network, including:
  • the cellular access network access node receives the WLAN selection information sent by the mobility management entity MME or the serving general packet radio service technical support node SGSN; or
  • the cellular access network access node receives the WLAN selection information sent by the PCRF or the ANDSF after establishing a connection with the policy and charging rule function PCRF or the access network discovery and selection function ANDSF.
  • the priority information includes:
  • the present invention provides a method for network selection, including:
  • the indication includes information about the WLAN network selected by the access node of the cellular access network according to the WLAN selection information of the wireless local area network;
  • the WLAN selection information includes priority information, where the priority information is used to indicate that the UE uses WLAN access in preference to using a cellular access network.
  • the indication further includes: a domain name of the service provider
  • Accessing the WLAN network according to the indication includes:
  • the priority information includes: a priority of an access technology type accessing the cellular access network, and/or access The priority of the access technology type of the WLAN.
  • the present invention provides a method for network selection, including: The line WLAN selection information, the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access is used for the user equipment UE in preference to the access by the cellular access network;
  • the MME/SGSN Sending, by the MME/SGSN, the WLAN selection information to a cellular access network access node, where the WLAN selection information is used by the cellular access network access node to select a WLAN network for the UE and indicate the UE Access the selected WLAN network.
  • the MME/SGSN obtains WLAN selection information, including:
  • the MME/SGSN receives the policy and charging rule function PCRF/access network discovery and selection function WLAN selection information sent by the ANDSF; or
  • the MME/SGSN receives the WLAN selection information sent by the old MME/SGSN when the UE switches or moves to a new location.
  • the MME/SGSN sends the WLAN selection information to the access node of the cellular access network, including:
  • the MME sends the WLAN selection information to the cellular base station by using an initial context setup request message when the UE transitions from the idle state to the connected state; or
  • the MME/SGSN sends the WLAN selection information to the access node of the cellular access network by using a UE context modification request message.
  • the method further includes: correspondingly, the MME/SGSN sends the WLAN selection information to the cellular access network.
  • Node including:
  • the MME/SGSN sends the modified WLAN selection information to the access node of the cellular access network.
  • the priority information includes: access technology type of accessing the cellular access network Priority, and/or priority of the type of access technology accessing the WLAN.
  • the present invention provides a method for network selection, including:
  • the policy and charging rule function PCRF/access network discovery and selection function ANDSF generates wireless local area network WLAN selection information, the WLAN selection information includes priority information, and the priority information is used to indicate that the WLAN access priority is adopted for the user equipment UE. Accessing using the cellular access network;
  • the WLAN selection information is used by the cellular access network access node to select a WLAN network for the UE and indicate the UE Access the selected WLAN network.
  • the PCRF/ANDSF sends the WLAN selection information to a cellular access network access node, including:
  • the PCRF/ANDSF Sending, by the PCRF/ANDSF, the WLAN selection information to a packet data network gateway PGW, the PGW transmitting the WLAN selection information to a serving gateway SGW, the SGW technical support node SGSN, the MME/SGSN WLAN selection information is sent to the access node of the cellular access network; or
  • the WLAN selection information Sending, by the PCRF/ANDSF, the WLAN selection information to a gateway general packet radio service support node GGSN, where the GGSN sends the WLAN selection information to a serving general packet radio service support node SGSN, where the SGSN selects the WLAN Information is sent to the cellular access network access node.
  • the PCRF/ANDSF establishes a connection with the access node of the cellular access network, including:
  • the PCRF/ANDSF is established in the Internet Protocol Connectivity Access Network IP-CAN session of the UE a connection establishment message is sent to the cellular access network access node to establish a connection with the access node of the cellular access network;
  • the PCRF/ANDSF receives a connection setup message sent by the cellular access network access node after the UE transitions from an idle state to a connected state, and establishes a connection with the cellular access network access node.
  • the PCRF/ANDSF generates WLAN selection information, including:
  • the PCRF/ANDSF generates WLAN selection information according to at least one of subscription information, service usage, location change information, account information, or network policy of the UE.
  • the priority information includes: access technology type of accessing the cellular access network Priority, and/or priority of the type of access technology accessing the WLAN.
  • the present invention provides a first device for network selection, including:
  • An obtaining module configured to acquire a wireless local area network after the user equipment UE accesses from the cellular access network
  • the WLAN selection information includes priority information, and the priority information is used to indicate that the WLAN access is used for the UE is prior to the access by using the cellular access network;
  • a selection module configured to select a WLAN network for the UE according to the priority information, where the selected WLAN network has a higher access priority than the cellular access network;
  • a sending module configured to instruct the UE to access the selected WLAN network.
  • the priority information includes at least two
  • the selection module is used to:
  • the WLAN selection information further includes a load condition
  • the selecting module is configured to:
  • the WLAN selection information further includes load information of the at least two WLAN networks
  • the selection module is used to: And selecting, according to the priority information of the at least two WLAN networks and the load information of the at least two WLAN networks, the WLAN network with the highest priority and the lowest load among the at least two WLAN networks.
  • the WLAN selection information further includes a signal quality condition
  • the selecting module is configured to:
  • the WLAN network selecting, according to the priority information and the signal quality condition, the WLAN network, wherein the signal received by the UE in the selected WLAN network satisfies the signal quality condition.
  • the WLAN selection information further includes signal quality information of the at least two WLAN networks
  • the selection module is used to:
  • the WLAN selection information further includes a location condition
  • the selecting module is configured to:
  • a WLAN network for the UE, wherein the UE is located within an area indicated in the location condition or outside an area indicated in the location condition.
  • the WLAN selection information further includes a domain name of the service provider
  • the sending module is used to:
  • the acquiring module includes:
  • a first acquiring unit configured to receive WLAN selection information sent by the mobility management entity MME/Serving General Packet Radio Service Technical Support Node SGSN; or
  • the second obtaining unit is configured to receive the WLAN selection information sent by the PCRF/ANDSF after establishing a connection with the policy and charging rule function PCRF/access network discovery and selection function ANDSF.
  • the The priority information includes: a priority of an access technology type that accesses the cellular access network, and/or a priority of an access technology type that accesses the WLAN.
  • the present invention provides a second device for network selection, including:
  • a receiving module configured to receive an indication sent by the access node of the cellular access network, where the indication includes information about the WLAN network selected by the access node of the cellular access network according to the WLAN selection information of the wireless local area network;
  • An access module configured to access the WLAN network according to the indication received by the receiving module, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN is used for the UE
  • the access takes precedence over the access using the cellular access network.
  • the indication further includes: a domain name of the service provider
  • the access module is used to:
  • the priority information includes: a priority of an access technology type that accesses the cellular access network, and/or access The priority of the access technology type of the WLAN.
  • the present invention provides a third device for network selection, including:
  • An obtaining module configured to acquire WLAN WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that WLAN access is used for the user equipment UE, and the access is performed by using the cellular access network;
  • a sending module configured to send the WLAN selection information to a cellular access network access node, where the WLAN selection information is used by the cellular access network access node to select a WLAN network for the UE and indicate the UE Access the selected WLAN network.
  • the acquiring module includes:
  • a first acquiring unit configured to receive subscription information of the UE sent by the home subscriber server HSS, and obtain WLAN selection information from the subscription information;
  • a second obtaining unit configured to receive the WLAN selection information sent by the policy and charging rule function PCRF/access network discovery and selection function ANDSF; or
  • a third acquiring unit configured to receive WLAN selection information sent by the old MME/SGSN when the UE generates a handover or moves to a new location.
  • the sending module includes:
  • a first sending unit configured to send the WLAN selection information to the cellular base station by using an initial context setup request message when the UE transitions from the idle state to the connected state;
  • a second sending unit configured to send the WLAN selection information to the cellular controller by using a radio access bearer allocation request message
  • a third sending unit configured to send the WLAN selection information to the access node of the cellular access network by using a bearer modification request message
  • a fourth sending unit configured to send the WLAN selection information to the access node of the cellular access network by using a downlink non-access stratum NAS transmission message;
  • a fifth sending unit configured to send the WLAN selection information to the access node of the cellular access network by using a UE context modification request message.
  • the third device further includes: a modifying module, configured to: after the acquiring module acquires the WLAN selection information, select information on the WLAN according to a local policy to modify;
  • the sending module is configured to:
  • the modified WLAN selection information is sent to the access node of the cellular access network.
  • the priority information includes: access technology type of accessing the cellular access network Priority, and/or priority of the type of access technology accessing the WLAN.
  • the present invention provides a fourth device for network selection, including:
  • a generating module configured to generate wireless local area network WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access is used for the user equipment UE in preference to the access by using the cellular access network;
  • a sending module configured to send the WLAN selection information generated by the generating module to a cellular access network access node, where the WLAN selection information is used by the cellular access network access node
  • the UE selects a WLAN network and instructs the UE to access the selected WLAN network.
  • the sending module includes:
  • Establishing a connection unit configured to establish a connection with the access node of the cellular access network; Transmitting, by the first sending unit, the WLAN selection information to the access node of the cellular access network by using an established connection;
  • the sending module includes:
  • a second sending unit configured to send the WLAN selection information to a node SGSN by using a packet data network gateway PGW, where the WLAN selection information is sent by the MME/SGSN to the access node of the cellular access network; or The WLAN selection information is sent by the gateway general packet radio service support node GGSN to the serving general packet radio service support node SGSN, and the SGSN sends the WLAN selection information to the cellular access network.
  • PGW packet data network gateway
  • the establishing connection unit is configured to: after the IP-CAN session of the Internet Protocol connectivity access network of the UE is established, to the cellular access network
  • the access node sends a connection setup message to establish a connection with the access node of the cellular access network;
  • the generating module is configured to:
  • WLAN selection information according to at least one of subscription information, service usage, location change information, account information, or network policy of the UE.
  • the priority information includes: access technology type of accessing the cellular access network Priority, and/or priority of the type of access technology accessing the WLAN.
  • the present invention provides a network selection system, including: a cellular access network access node, and a user equipment UE;
  • the cellular access network access node includes the first device in any one of the foregoing fifth aspects;
  • the UE includes the second device of any of the above sixth aspects.
  • a tenth aspect, the present invention provides a network selection system, including: a cellular access network access node, a user equipment UE, and a mobility management entity MME/service general packet radio service support node SGSN;
  • the cellular access network access node includes the first device in any one of the foregoing fifth aspects;
  • the UE includes the second device in any one of the sixth aspects
  • the MME/SGSN includes the third device in any of the foregoing seventh aspects.
  • the present invention provides a network selection system, including: a cellular access network access node, a user equipment UE, and a policy and charging rule function PCRF/access network discovery and selection function ANDSF;
  • the cellular access network access node includes the first device in any one of the foregoing fifth aspects;
  • the UE includes the second device in any one of the sixth aspects
  • the PCRF/ANDSF includes the fourth device according to any of the above eighth aspects.
  • the technical solution provided by the present invention has the following advantages: after the UE accesses from the cellular access network, the WLAN selection information includes the priority information, and the priority information is used to indicate the The UE adopts the WLAN access in preference to the access by the cellular access network, selects a WLAN network for the UE according to the WLAN selection information, and instructs the UE to access the selected WLAN network, thereby improving the efficiency of the UE accessing the network.
  • the behavior of the UE is controllable.
  • FIG. 1 is a schematic structural diagram of an LTE network according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a 2G/3G network architecture provided by an embodiment of the present invention.
  • Embodiment 3 is a flowchart of a method for network selection provided by Embodiment 1 of the present invention.
  • Embodiment 4 is a flowchart of a method for network selection provided by Embodiment 2 of the present invention.
  • Embodiment 5 is a flowchart of a method for network selection provided by Embodiment 3 of the present invention.
  • FIG. 6 is a flowchart of a method for network selection provided by Embodiment 4 of the present invention
  • 7 is a flowchart of a method for network selection provided by Embodiment 5 of the present invention
  • FIG. 8 is a schematic diagram of setting WLAN selection information according to Embodiment 5 of the present invention.
  • FIG. 9 is a schematic diagram of the MME transmitting WLAN selection information according to Embodiment 5 of the present invention.
  • FIG. 10 is another schematic diagram of the MME/SGSN transmitting WLAN selection information according to Embodiment 5 of the present invention.
  • FIG. 11 is still another schematic diagram of the MME/SGSN transmitting WLAN selection information according to Embodiment 5 of the present invention.
  • FIG. 12 is still another schematic diagram of the MME/SGSN transmitting WLAN selection information according to Embodiment 5 of the present invention.
  • FIG. 13 is a schematic diagram of an eNB indicating a UE according to Embodiment 5 of the present invention.
  • FIG. 14 is a schematic diagram of a PCRF-triggered IP-CAN session modification process according to Embodiment 5 of the present invention
  • FIG. 15 is a schematic diagram of a PGW/PCEF-triggered IP-CAN session modification process according to Embodiment 5 of the present invention
  • FIG. 16 is a schematic flowchart of an IP-CAN session establishment process according to Embodiment 5 of the present invention.
  • FIG. 17 is a flowchart of a method for network selection provided by Embodiment 6 of the present invention.
  • FIG. 18 is a schematic diagram of interaction between a PCRF/ANDSF and an eNB according to Embodiment 6 of the present invention
  • FIG. 19 is another flowchart of a method for network selection provided by Embodiment 6 of the present invention.
  • FIG. 20 is a structural diagram of a first device for network selection according to Embodiment 7 of the present invention.
  • FIG. 21 is a structural diagram of a second device for network selection according to Embodiment 8 of the present invention.
  • FIG. 22 is a structural diagram of a third device for network selection according to Embodiment 9 of the present invention.
  • Figure 23 is a structural diagram of a fourth apparatus for network selection according to Embodiment 10 of the present invention.
  • FIG. 24 is a structural diagram of a cellular access network access node according to Embodiment 11 of the present invention.
  • FIG. 25 is a structural diagram of a UE according to Embodiment 12 of the present invention.
  • 26 is a structural diagram of an MME/SGSN according to Embodiment 13 of the present invention.
  • Figure 27 is a structural diagram of a PCRF/ANDSF provided in Embodiment 14 of the present invention.
  • Embodiment 16 of the present invention is a system structural diagram of network selection provided by Embodiment 16 of the present invention.
  • Figure 30 is a system configuration diagram of network selection provided in Embodiment 17 of the present invention. detailed description
  • the embodiment of the invention relates to a method, a device and a system for selecting a network.
  • the network side selects a suitable network for the UE in the cellular network and the WLAN, and the access node of the cellular access network guides the UE to access the network.
  • the cellular access network includes an access technology type network such as LTE, UMTS, CDMA2000 or GSM, CDMA2000 lx, wherein LTE belongs to the 4th generation mobile communication technology (4G), UMTS, and CDMA2000 belongs to the 3rd generation mobile communication technology (3G) ), GSM, CDMA2000 lx belongs to the 2nd generation mobile communication technology (2G).
  • the access node of the cellular access network includes: an SRC (Single Radio Controller); an eNodeB in the LTE (evolved base station;), and an RNC (Radio Network Controller) in the 3G. Controller), NodeB (Node Base, base station;), BSC (Base Station Controller), BTS (Base Transceiver Station), etc. in 2G.
  • SRC Single Radio Controller
  • eNodeB in the LTE (evolved base station;
  • RNC Radio Network Controller
  • NodeB Node Base, base station;
  • BSC Base Station Controller
  • BTS Base Transceiver Station
  • FIG. 1 is a schematic structural diagram of an LTE network according to an embodiment of the present invention.
  • the HSS Home Subscriber Server
  • the PCRF Policy and Charging Rules Function
  • ANDSF can generate WLAN selection information, where the WLAN selection information includes the wireless connection.
  • Priority information of the technology type and WLAN and transmitted to the eNB through devices such as SGW (Serving Gateway)/PGW (PDN Gateway, Packet Data Network Gateway), Mobility Management Entity (Mobility Management Entity)
  • SGW Serving Gateway
  • PGW Packet Data Network Gateway
  • Mobility Management Entity Mobility Management Entity
  • the eNB selects a suitable network for the UE according to the WLAN selection information and instructs the UE to access the network, thereby improving the efficiency of the UE accessing the network, and implementing the behavior of the UE to be controllable.
  • FIG. 2 is a schematic diagram of a 2G/3G network architecture according to an embodiment of the present invention.
  • the HSS/HLR Home Location Register
  • the PCRF/ANDSF can generate WLAN selection information, where the WLAN selection information includes the radio access technology type and the WLAN priority information, and
  • the SGW/PGW, the MME/SGSN (Serving GPRS Support Node), and the like are transmitted to the NodeB or the BTS, and the NodeB or the BTS selects a suitable network for the UE according to the WLAN selection information, and instructs the UE to access the network, thereby improving The efficiency of the UE accessing the network realizes that the behavior of the UE is controllable.
  • this embodiment provides a method for network selection, including:
  • the cellular access network access node After the user equipment UE accesses from the cellular access network, the cellular access network access node acquires WLAN selection information of the wireless local area network, where the WLAN selection information includes priority information, where the priority information is used to indicate that The UE adopts WLAN access in preference to using the cellular access network to access;
  • the cellular access network access node selects a WLAN network for the UE according to the priority information, where the selected WLAN network has a higher access priority than the cellular access network.
  • the access priority of the selected WLAN network is higher than that of the cellular access network, and the accessing the WLAN network by the UE is prior to accessing the cellular access network.
  • the cellular access network access node instructs the UE to access the selected WLAN network.
  • the WLAN selection information may be obtained by the MME/SGSN from the UE subscription information sent by the HSS/HLR, or may be the PCRF/ANDSF according to the UE subscription information, service usage, location change information, account information, or At least one of the network policies is generated and sent to the MME/SGSN.
  • the MME/SGSN may directly forward the information to the access node of the cellular access network, or may be modified according to the local policy and sent to the access node of the cellular access network.
  • the local policy on which the MME/SGSN is based may be a policy of the WLAN and cellular network selection of the visited operator.
  • the modification according to the local policy may be to adjust the priority order of the wireless access technology type and the WLAN, or to adjust the priority order of different networks of the WLAN, or to add or prohibit certain WLAN networks.
  • the WLAN selection information includes identification information of the selected network, such as an SSID (Service Set Identification), an SSID+HESSID (Homogenous Extended Service Set Identifier), and an OUI (Organization Universal) Identity organization global identity) or BSSID (Basic Service Set Identification) and so on.
  • the radio access technology type and the WLAN priority information may be set according to different granularities according to requirements, may be set according to the granularity of the cellular network and the WLAN, or may be set according to the granularity of the cellular network and the WLAN according to different standards, or It can be set according to the different WLANs and the granularity of the cellular network/cellular system, which is not specifically limited in this embodiment.
  • the priority information includes priority information of at least two WLAN networks; Selecting a WLAN network for the UE according to the priority information, including:
  • the WLAN selection information further includes a load condition
  • Selecting a WLAN network for the UE according to the priority information including:
  • the WLAN selection information further includes load information of the at least two WLAN networks
  • Selecting a WLAN network for the UE according to the priority information including:
  • Wi-Fi network Wi-Fi network.
  • the WLAN selection information further includes a signal quality condition
  • Selecting a WLAN network for the UE according to the priority information including:
  • the WLAN network selecting, according to the priority information and the signal quality condition, the WLAN network, wherein the signal received by the UE in the selected WLAN network satisfies the signal quality condition.
  • the WLAN selection information further includes signal quality information of the at least two WLAN networks
  • Selecting a WLAN network for the UE according to the priority information including:
  • the WLAN selection information further includes a location condition
  • Selecting a WLAN network for the UE according to the priority information including:
  • a WLAN network for the UE, where the UE is located within an area indicated in the location condition or is indicated in the location condition Outside the area.
  • the network with the highest priority may be selected for the UE according to the priority information within a specified time period or at any time other than the specified time period.
  • the load condition, the signal quality condition, the location condition, and the specified time period may also be applied in any combination, that is, the WLAN selection information may include a load condition, a signal quality condition, a location condition, and a specified time period. Any one or several.
  • the load of the WLAN satisfies the load condition, and specifically includes: the load of the WLAN is less than or greater than a set first threshold.
  • the signal quality received by the UE in the WLAN satisfies the signal quality condition, and may specifically include: the signal quality received by the UE in the WLAN is less than or greater than a set second threshold.
  • the area specified in the location condition includes but is not limited to: a specific location area (LA), a routing area (RA), a tracking area (TA), a controller (RNC ID, SRC ID), and a base station (eNB, NodeB) , BTS) or cell (Cell), etc.
  • LA specific location area
  • RA routing area
  • TA tracking area
  • RNC ID controller
  • SRC ID controller
  • eNB NodeB
  • BTS cell
  • Cell cell
  • the WLAN selection information further includes a domain name of the service provider
  • the cellular access network access node instructs the UE to access the selected WLAN network, including:
  • the cellular access network access node instructs the UE to access the selected WLAN network provided by the service provider.
  • the domain name (realm name) of the service provider may be in the form of a list, and includes one or more domain names.
  • the domain name may include a PLMN (Public Land Mobile Network) ID.
  • the priority of each service provider may be set, and the access node of the cellular access network selects the WLAN that the UE accesses according to the WLAN information that the WLAN network supports (the ability of the WLAN network to connect to the service provider, etc.).
  • the service provider sends it to the UE, which can be one or more.
  • the WLAN selection information sent by the core network to the access node of the cellular access network includes the identifier of the WLAN network
  • the domain name of the service provider used when the UE accesses the WLAN network is also indicated.
  • the cellular access network access node acquires WLAN selection information of the wireless local area network, including:
  • the cellular access network access node receives, by the cellular access network access node, the WLAN selection information sent by the mobility management entity MME or the serving general packet radio service technical support node SGSN; or After establishing the connection between the policy and charging rule function PCRF or the access network discovery and selection function ANDSF, the cellular access network access node receives the WLAN selection information sent by the PCRF or the ANDSF.
  • the access node of the cellular access network may connect to the reconfiguration message by using an air interface exchange message such as an RB (Radio Bearer) setup message or an RRC (Radio Resource Control) Connection Reconfiguration connection reconfiguration message.
  • the UE is instructed to access the network.
  • the selected network identifier and/or the domain name of the service provider may be carried in the above message.
  • the priority information includes: a priority of an access technology type that accesses the cellular access network, and/or The priority of the type of access technology entering the WLAN.
  • the access technology type that only gives access to the WLAN has the highest priority, indicating that the access technology type accessing the WLAN is superior to any other access technology type of any other network.
  • the priority of the access technology type of accessing the cellular access network and the priority of the access technology type of accessing the WLAN may be given at the same time, and the priority of the latter is higher than the priority of the former.
  • the UE accesses the cellular access network, obtains the WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN is used for the UE.
  • the UE accesses the selected WLAN network according to the WLAN selection information, and indicates that the UE accesses the selected WLAN network, thereby improving the efficiency of the UE accessing the network, and implementing the UE's behavior controllable. For the UE to accurately guide the access of the network, it can be automatically completed, not only the UE saves power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 2
  • this embodiment provides a method for network selection, including:
  • 401 Receive an indication sent by the access node of the cellular access network, where the indication includes information about the WLAN network selected by the access node of the cellular access network according to the WLAN selection information of the wireless local area network; 402: access the indication according to the indication Wi-Fi network.
  • the WLAN selection information includes priority information, where the priority information is used to indicate The UE adopts WLAN access in preference to access using a cellular access network.
  • the indication further includes: a domain name of the service provider
  • Accessing the WLAN network according to the indication includes:
  • the domain name of the service provider may be in the form of a list, including one or more domain names.
  • the domain name may include a PLMN (Public Land Mobile Network) ID.
  • the network side may also set the priority of each service provider, and the access node of the cellular access network selects the WLAN accessed by the UE for the UE according to the WLAN information that the WLAN network supports (the ability of the WLAN network to connect to the service provider, etc.)
  • the service provider used is sent to the UE, which may be one or more.
  • the WLAN selection information sent by the core network to the access node of the cellular access network includes the identifier of the WLAN network
  • the domain name of the service provider used when the UE accesses the WLAN network is also indicated. After receiving the domain name, the UE can accurately access the WLAN provided by the corresponding service provider according to the domain name.
  • the UE when the UE accesses the WLAN network selected by the network, the UE may use the domain name to generate a Network Access Identifier (NAI), and use the NAI to authenticate the WLAN network. If there are multiple service provider domain names sent by the access node of the cellular access network, the UE selects the highest priority among the multiple service provider domain names according to the service provider domain name and priority stored by the UE. , generate NAI and use the NAI to authenticate on the WLAN network.
  • NAI Network Access Identifier
  • the priority information includes: a priority of an access technology type that accesses the cellular access network, and/or access The priority of the access technology type of the WLAN.
  • the above method provided by this embodiment may be performed by a UE.
  • the foregoing method provided in this embodiment, by receiving an indication sent by the access node of the cellular access network, where the indication includes information about the WLAN network selected by the access node of the cellular access network according to the WLAN selection information of the wireless local area network, according to the Instructing access to the WLAN network, thereby improving the efficiency of the UE accessing the network, realizing controllability of the UE, and accurately guiding the access of the network for the UE, which can be automatically completed, not only the UE saves power, but also improves the UE's Efficiency and user experience.
  • the UE can also access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively divide the number of the cellular network. According to the flow pressure, the whole network throughput is improved.
  • Example 3
  • this embodiment provides a method for network selection, including:
  • the mobility management network element acquires WLAN selection information of the wireless local area network, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access is used for the user equipment UE, and the access is performed in preference to the cellular access network. ;
  • the mobility management network element sends the WLAN selection information to a cellular access network access node, where the WLAN selection information is used by the cellular access network access node to select a WLAN network for the UE and indicate The UE accesses the selected WLAN network.
  • the mobility management network element refers to a mobility management entity MME/service general packet radio service technology support node SGSN.
  • the mobility management network element obtains the WLAN selection information, including:
  • the MME/SGSN receives the subscription information of the UE sent by the home subscriber server HSS, and obtains the WLAN selection information from the subscription information; or
  • the MME/SGSN receives the policy and charging rule function, the PCRF/access network discovery and selection function, and the WLAN selection information sent by the ANDSF; or
  • the MME/SGSN receives the WLAN selection information transmitted by the old (MME) MME/SGSN when the UE switches or moves to a new location.
  • the old MME/SGSN refers to an MME/SGSN that performs mobility management on the UE before the UE handover.
  • the WLAN selection information may be obtained by the MME/SGSN from the UE subscription information sent by the HSS/HLR; or may be the PCRF/ANDSF according to the UE subscription information, service usage, location change information, account information, or At least one of the network policies is generated and sent to the MME/SGSN; or may be acquired from the old MME/SGSN when the UE switches or moves to a new location.
  • the MME/SGSN may directly forward the information to the access node of the cellular access network, or may be modified according to the local policy and sent to the access node of the cellular access network.
  • the local policy on which the MME/SGSN is based may be a policy of the WLAN and cellular network selection of the visited operator.
  • the modification according to the local policy may be to adjust the priority order of the wireless access technology type and the WLAN, or to adjust the priority order of different WLAN networks, or to add or prohibit certain WLAN networks.
  • the mobility management network element sends the WLAN selection information to the access node of the cellular access network, including:
  • the MME When the UE transitions from the idle state to the connected state, the MME sends the WLAN selection information to the cellular base station by using an initial context setup request Initial Context Setup Request message; or
  • the SGSN sends the WLAN selection information to the cellular controller RNC/SRC through a radio access assignment request RAB Assignment Request message;
  • the MME/SGSN sends the WLAN selection information to the access node of the cellular access network through a 7-load modification request message;
  • the MME/SGSN sends the WLAN selection information to the access node of the cellular access network by using a downlink non-access stratum NAS transmission message;
  • the MME/SGSN sends the WLAN selection information to the access node of the cellular access network by using a UE context modification request message.
  • the mobility management network element after the mobility management network element obtains the WLAN selection information, the mobility management network element further includes:
  • the MME/SGSN modifies the WLAN selection information according to a local policy
  • the MME/SGSN sends the WLAN selection information to the access node of the cellular access network, including:
  • the MME/SGSN sends the modified WLAN selection information to the access node of the cellular access network.
  • the priority information includes: a priority of an access technology type that accesses the cellular access network And/or, the priority of the type of access technology accessing the WLAN.
  • the WLAN selection information is obtained by the mobility management network element, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access is used for the user equipment UE, and the cellular connection is used.
  • Accessing the network sending the WLAN selection information to the access node of the cellular access network, so that the access node of the cellular access network selects a WLAN network for the UE and instructs the UE to access the selected WLAN network, thereby improving
  • the efficiency of the UE accessing the network is controllable, and the UE's behavior is controlled.
  • the UE can accurately guide the access of the network, which can be automatically completed. Not only does the UE save power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 4
  • this embodiment provides a method for network selection, including:
  • the policy and charging rule function PCRF/access network discovery and selection function ANDSF generates wireless local area network WLAN selection information, the WLAN selection information includes priority information, and the priority information is used to indicate that the WLAN connection is adopted for the user equipment UE. In preference to access using the cellular access network;
  • the PCRF/ANDSF sends the WLAN selection information to a cellular access network access node, where the WLAN selection information is used by the cellular access network access node to select a WLAN network for the UE and indicate the location The UE accesses the selected WLAN network.
  • the PCRF/ANDSF sends the WLAN selection information to the access node of the cellular access network, including:
  • the PCRF/ANDSF establishes a connection with the access node of the cellular access network, and sends the WLAN selection information to the access node of the cellular access network through the established connection;
  • the PCRF/ANDSF sends the WLAN selection information to the packet data network gateway PGW, and the PGW sends the WLAN selection information to the serving gateway SGW, and the SGW sends the WLAN selection information to the mobility management entity MME/ Serving a general packet radio service technology support node SGSN, the MME/SGSN transmitting the WLAN selection information to the cellular access network access node; or
  • the PCRF/ANDSF sends the WLAN selection information to a gateway general packet radio service support node GGSN, and the GGSN sends the WLAN selection information to a serving general packet radio service support node SGSN, and the SGSN selects the WLAN selection information And sent to the cellular access network access node.
  • connection between the PCRF/ANDSF and the access node of the cellular access network includes:
  • the PCRF/ANDSF After the IP-CAN session of the Internet Protocol Connectivity Access Network of the UE is established, the PCRF/ANDSF sends a connection setup message to the access node of the cellular access network to establish a connection with the access node of the cellular access network; or
  • the PCRF/ANDSF receives a connection setup message sent by the cellular access network access node after the UE transitions from the idle state to the connected state, and establishes a connection with the cellular access network access node.
  • the PCRF/ANDSF generates a WLAN selection signal.
  • Interest including:
  • the PCRF/ANDSF generates WLAN selection information according to at least one of subscription information, service usage, location change information, account information, or network policy of the UE.
  • the subscription information of the UE includes, but is not limited to, a data package, a duration package, and the like of the UE.
  • the location change information of the UE includes, but is not limited to, whether the UE is located in a specific location area, a routing area, a tracking area, a cell, and the like.
  • the account information includes, but is not limited to, balance information of the user's account, and the like.
  • the network policy includes but is not limited to: a network load balancing policy, and the like. For example, in the initial situation, the priority of the cellular network in the WLAN selection information of the UE is higher than the priority of the WLAN.
  • the cellular network of the UE When the cellular network traffic plan or duration package of the UE is exhausted or is about to be exhausted in the tier period, the cellular network of the UE is used. The fee will increase or the cellular network rate will decrease.
  • the PCRF obtains the UE's package usage status from the charging system, and triggers the WLAN selection information to adjust the WLAN priority to be higher than the priority of the cellular network.
  • the priority information includes: a priority of an access technology type that accesses the cellular access network And/or, the priority of the type of access technology accessing the WLAN.
  • the foregoing method provided in this embodiment generates WLAN selection information by using a PCRF/ANDSF, where the WLAN selection information includes priority information, where the priority information is used to indicate that adopting WLAN access for the UE takes precedence over adopting the cellular access
  • the network access the WLAN selection information is sent to the access node of the cellular access network, so that the access node of the cellular access network selects a WLAN network for the UE and instructs the UE to access the selected WLAN network, thereby improving the UE.
  • the efficiency of accessing the network enables the behavior of the UE to be controlled.
  • the UE can accurately guide the access of the network, which can be automatically completed. Not only does the UE save power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 5
  • this embodiment provides a method for network selection, including:
  • the MME/SGSN After the user equipment UE is accessed from the cellular access network, the MME/SGSN acquires WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access priority is adopted for the UE. Accessing using the cellular access network; The MME/SGSN obtains WLAN selection information, including:
  • the MME/SGSN receives the subscription information of the UE sent by the home subscriber server HSS, and obtains the WLAN selection information from the subscription information; or
  • MME/SGSN receiving policy and charging rule function PCRF/access network discovery and selection function WLAN selection information sent by ANDSF; or
  • the MME/SGSN receives the WLAN selection information transmitted by the old MME/SGSN when the UE switches or moves to a new location.
  • the WLAN selection information includes identifier information of the selected network, such as SSID, SSID+HESSID, OUI, or BSSID.
  • the radio access technology type and the WLAN priority information may be set according to different granularities according to requirements, may be set according to the granularity of the cellular network and the WLAN, or may be set according to the granularity of the cellular network and the WLAN of different standards, or It can be set according to the different WLANs and the granularity of the cellular network/cellular system, which is not specifically limited in this embodiment.
  • the priority setting may be WLAN > Cell Celluar, or LTE > WLAN > UMTS or GSM, or LTE > UMTS > WLAN > GSM, or LTE > SSID (Service Set Identification) S1, S2, S3 > UMTS>GSM and more.
  • Multiple networks can exist in the same priority level, indicating that the multiple networks have the same priority. For example, three different WLANs, WLAN S1, S2, and S3, may have priority of S1>S2>S3, or may have the same priority.
  • the load threshold or the SS (Signal Strength) threshold can be set as required. The description is not required here.
  • the SSID may also be replaced by any one of the following identifiers: SSID+HESSID (Homogenous Extended Service Set Identifier), OUI (Organization Universal Identity Organization Global Identity), BSSID (Basic Service Set) Identification, basic service set identifier, etc.
  • SSID+HESSID Homogenous Extended Service Set Identifier
  • OUI Organization Universal Identity Organization Global Identity
  • BSSID Basic Service Set Identification
  • the MME/SGSN sends the WLAN selection information to the access node of the cellular access network.
  • This step may specifically include any one of the following five types:
  • the MME sends the WLAN selection information to the cellular base station by using an initial context setup request message.
  • an initial context setup request message is a schematic diagram of the MME transmitting the WLAN selection information to the eNB by using an Initial Context Setup Request message (initial context establishment request) when the UE transitions from the idle state to the connected state.
  • the SRC is also deployed in the network, the operation of selecting the network according to the WLAN selection information may be performed by the eNB or The SRC performs the process, and after selecting the network, the eNB indicates the UE.
  • the SGSN sends the WLAN selection information to the cellular controller through a radio access bearer allocation request message.
  • the MME/SGSN sends the WLAN selection information to the access node of the cellular access network by carrying a modification request message.
  • a modification request message For example, referring to FIG. 10, a schematic diagram of transmitting, by the MME/SGSN, the WLAN selection information to the eNB through a Bearer Modify Request message.
  • the MME/SGSN sends the WLAN selection information to the access node of the cellular access network by using a downlink non-access stratum NAS transport message.
  • the MME/SGSN sends the WLAN selection information to the eNB through a downlink Downlink NAS (Non-Access-Stratume) transmission message.
  • the MME/SGSN sends the WLAN selection information to the access node of the cellular access network by using a UE context modification request message.
  • the MME/SGSN may further modify the WLAN selection information according to a local policy. Accordingly, the MME/SGSN sends the WLAN selection information to the cellular connection.
  • the ingress access node includes: the MME/SGSN sends the modified WLAN selection information to the access node of the cellular access network.
  • the cellular access network access node receives the WLAN selection information sent by the MME/SGSN.
  • the cellular access network access node selects the network with the highest priority for the UE according to the priority information in the WLAN selection information.
  • the WLAN selection information further includes a load condition
  • the step 704 may include: selecting, according to the priority information and the load condition, the WLAN network, wherein the selected WLAN network meets the load condition.
  • the WLAN selection information further includes load information of the at least two WLAN networks; and the step 704 may include:
  • the WLAN selection information further includes a signal quality condition
  • step 704 is To include:
  • Selecting a WLAN network for the UE according to the priority information including:
  • the WLAN network selecting, according to the priority information and the signal quality condition, the WLAN network, wherein the signal received by the UE in the selected WLAN network satisfies the signal quality condition.
  • the signal quality can be characterized by a plurality of parameters, such as signal strength, bit error rate, etc., which is not specifically limited in this embodiment.
  • signal strength the better the signal quality
  • bit error rate the worse the signal quality
  • the lower the bit error rate the better the signal quality.
  • the WLAN selection information further includes signal quality information of the at least two WLAN networks; the step 704 may include:
  • the WLAN selection information further includes a location condition
  • the step 704 includes: selecting, according to the priority information and the location condition, the WLAN network, where the UE is located in the location condition. Within the area of the area or outside the area indicated in the location condition.
  • the WLAN network with the highest priority may be selected for the UE according to the priority information within a specified time period or at any time other than the specified time period.
  • the load condition, the signal quality condition, the location condition, and the specified time period may also be applied in any combination, that is, the WLAN selection information may include a load condition, a signal quality condition, a location condition, and a specified time period. Any one or several.
  • the load of the WLAN satisfies the load condition, and specifically includes: the load of the WLAN is less than or greater than a set first threshold.
  • the signal quality of the UE in the WLAN satisfies the signal quality condition, and may specifically include: the signal quality of the UE in the WLAN is less than or greater than a set second threshold.
  • the area indicated in the location condition includes but is not limited to: a specific location area (LA), a routing area (RA), a tracking area (TA), a controller (RNC ID, SRC ID), and a base station (eNB, NodeB) , BTS) or cell (Cell), etc.
  • LA specific location area
  • RA routing area
  • TA tracking area
  • RNC ID controller
  • SRC ID controller
  • eNB NodeB
  • BTS base station
  • Cell cell
  • the cellular access network access node sends an indication to the UE, indicating that the UE accesses the selected network.
  • the cellular access network access node may send the WLAN access information to the UE in an air interface interaction message with the UE, such as an RB Establishment radio 7-connection setup message or an RRC Connection Reconfiguration radio resource control connection reconfiguration message, where the WLAN access information is sent to the UE.
  • the information may include: a selected WLAN network identifier and/or a service provider's domain name. For example, referring to FIG. 13, a schematic diagram of a UE is indicated by an RRC through an RRC Connection Reconfiguration message.
  • the WLAN network identifier may be a combination of one or more of SSID, SSID+HESSID, OUI, BSSID, and the like.
  • the WLAN selection information further includes: a domain name of the service provider;
  • step 704 includes: instructing the UE to access the WLAN provided by the service provider.
  • the UE receives an indication sent by the access node of the cellular access network, where the indication includes the access information of the WLAN network selected by the access node of the cellular access network according to the WLAN selection information of the wireless local area network;
  • the UE accesses the WLAN network according to the WLAN access information.
  • step 706 may include:
  • All of the above use the existing standard interface message and flow (between the eNB and the SRC) to transmit WLAN selection information between the PCRF, the MME/SGSN, and the access node of the cellular access network, and are sent by the access node of the cellular access network.
  • the indication directs the UE to access the network.
  • the present invention may also use the newly added message to transmit the WLAN selection information, which is not specifically limited in the present invention.
  • the WLAN selection information is transmitted.
  • the IP-CAN Session Modification session modification process can be as shown in FIG. 14 and FIG. 15.
  • 14 is a PCRF/ANDSF initiated IP-CAN session modification procedure. Therefore, the PCRF/ANDSF may carry the WLAN selection information to the PGW/PCEF in the policy and charging rule providing message.
  • Figure 15 shows the IP-CAN session modification procedure initiated by the PGW/PCEF.
  • the PCRF/ANDSF can carry the WLAN selection information to the PGW/PCEF in the IP-CAN session modification confirmation message.
  • the WLAN selection information may also be transmitted.
  • the WLAN selection information may be carried in the indication message of the IP-CAN session establishment and the confirmation message of the IP-CAN session establishment.
  • the WLAN selection information is obtained by using the MME/SGSN, where the WLAN selection information includes priority information, where the priority information is used to indicate that the UE adopts WLAN access in preference to using a cellular access network.
  • Sending the WLAN selection information to the access node of the cellular access network the access node of the cellular access network selects a WLAN network for the UE according to the WLAN selection information, and instructs the UE to access the selected WLAN network, thereby improving the UE.
  • the efficiency of the access network enables the behavior of the UE to be controlled, and the UE can accurately guide the access of the network, which can be automatically completed. Not only does the UE save power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 6
  • This embodiment provides a method for network selection.
  • the method includes:
  • the PCRF/ANDSF generates WLAN WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access is used for the UE is prior to the access by using the cellular access network;
  • this step may include:
  • the first mode after the IP-CAN session of the Internet Protocol Connectivity Access Network of the UE is established, the PCRF/ANDSF sends a connection setup message to the access node of the cellular access network, and connects to the cellular access network. Incoming node establishes a connection; or,
  • the second mode the PCRF/ANDSF receives a connection setup message sent by the access node of the cellular access network after the UE transitions from an idle state to a connected state, and establishes a connection with the access node of the cellular access network.
  • the sender is required to address and discover the receiver.
  • the PCRF obtains the location information of the UE from the PCEF on the Gx interface, and then uses the UE ID and the UE location information to form a route identifier, and sends a message to the receiver.
  • the UE ID in the route identifier may be the permanent identifier of the UE.
  • the IMSI International Mobile Subscriber Identification Number
  • the IMSI may be a temporary identifier generated by the network element such as the base station or the controller of the MME or the cellular access network.
  • the temporary identifier is sent to the PCEF after being generated, and sent by the PCEF to the PCRF, and the PCRF binds the temporary identifier to the permanent identifier IMSI of the UE. If the temporary identity is generated by the MME, the temporary identity needs to be sent to the cellular access network.
  • the location information of the UE in the route identifier may be a cell identifier, a location area identifier, a routing area identifier, or a tracking area identifier of the UE that is reported by the PCEF to the PCRF, or may be mapped by the PCRF according to the UE location information reported by the PCEF. RNC, BSC, SRC and other controller identification and so on.
  • the network element such as the base station or the controller of the cellular access network uses the UE ID to form a route identifier, and sends a message to the receiver.
  • the UE ID in the route identifier may be a permanent identifier of the UE, such as an IMSI, or may be a temporary identifier generated by the network element such as a base station or a controller of the MME or the cellular access network.
  • the temporary identifier is sent to the PCEF after being generated, and is sent by the PCEF to the PCRF, and the PCRF binds the temporary identifier to the permanent identifier IMSI of the UE. If the temporary identity is generated by the MME, the temporary identity needs to be sent to the cellular access network.
  • the access node of the cellular access network may send the cell identifier, the location area identifier, the routing area identifier or the tracking area identifier of the UE, or the controller identifiers of the RNC, BSC, SRC, etc. to the PCRF.
  • the routing network that sends the connection establishment message by using the temporary identifier, the permanent identifier of the UE, the temporary identifier, and the combination of the permanent identifier and the temporary identifier can be routed to the correct receiving end.
  • the UE's temporary identity is updated, and the routing table of the message's routing network also needs to be updated.
  • the composition of the temporary identifier may be a globally unique identifier of the device that generates the temporary identifier + time + random number, and the random number may also be replaced with a character that is not used for a long time, etc., which is not specifically limited in this embodiment.
  • the PCRF/ANDSF sends the WLAN selection information to the access node of the cellular access network through an established connection;
  • a schematic diagram is established for establishing a connection between a PCRF/ANDSF and a cellular access network access node, and transmitting the WLAN selection information to an eNB through an established connection.
  • the access node of the cellular access network After receiving the WLAN selection information, the access node of the cellular access network selects a network for the UE according to the WLAN selection information, and instructs the UE to access the selected network.
  • the method may include:
  • the PCRF/ANDSF generates WLAN WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN is adopted for the UE. Access is prioritized by access using the cellular access network;
  • the PCRF/ANDSF sends the WLAN selection information to the PGW, and the PGW sends the WLAN selection information to the SGW, and the SGW sends the WLAN selection information to the MME/SGSN.
  • the PCRF/ANDSF sends the WLAN selection information to the PGW.
  • the GGSN sends the WLAN selection information to the SGSN, and the SGSN sends the WLAN selection information to the access node of the cellular access network.
  • the PCRF/ANDSF may send the WLAN selection information to the PGW (PDN Gateway, Packet Data Network to Gateway)/PCEF (Policy and Charging Enforcement Function) through the Policy and Charging Rules Provision policy and the charging rule providing message of the Gx interface. , policy and billing execution functions).
  • PGW Packet Data Network to Gateway
  • PCEF Policy and Charging Enforcement Function
  • the PCRF/ANDSF may carry the WLAN selection information in the IP CAN Session Modification response message sent to the PGW/PCEF, as shown in FIG. 10 or FIG.
  • the PGW/PCEF sends the WLAN selection information to the SGW (Serving Gateway) in the Update Bearer Request message, and the SGW sends the WLAN selection information to the MME/SGSN.
  • the SGSN can send the WLAN selection information to the RNC/SRC in the RAB assignment Request message.
  • the UMTS accesses the EPC (Evolved Packet Core)
  • the SGSN receives the WLAN selection information from the SGW.
  • the GGSN acts as the PCEF, and the PCRF/ANDSF sends the WLAN selection information to the GGSN.
  • the GGSN then sends the WLAN selection information to the SGSN.
  • the MME/SGSN After receiving the WLAN selection information, the MME/SGSN sends the WLAN selection information to the access node of the cellular access network.
  • the cellular access network access node selects a network for the UE and instructs the UE to access the selected network.
  • the generating, by the PCRF/ANDSF, the WLAN selection information may include: generating, by the PCRF/ANDSF, at least one of subscription information, service usage, location change information, account information, or network policy of the UE. WLAN selection information.
  • the foregoing method provided in this embodiment generates WLAN selection information by using a PCRF/ANDSF, where the WLAN selection information includes priority information, where the priority information is used to indicate that the UE adopts WLAN access in preference to using a cellular access network.
  • Sending the WLAN selection information to the access node of the cellular access network so that the access node of the cellular access network selects a WLAN network for the UE and instructs the UE to access the selected WLAN network, thereby improving the access network of the UE.
  • Efficiency achieve UE The behavior is controllable, and the UE is accurately guided to access the network, which can be automatically completed. Not only does the UE save power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 7
  • this embodiment provides a first device for network selection, including:
  • the obtaining module 2001 is configured to obtain, after the user equipment UE accesses from the cellular access network, the wireless local area network WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN is used for the UE. Access is prioritized by access using the cellular access network;
  • the selecting module 2002 is configured to select a WLAN network for the UE according to the priority information, where the selected WLAN network has an access priority higher than the cellular access network;
  • the sending module 2003 is configured to instruct the UE to access the selected WLAN network.
  • the WLAN selection information may be obtained by the MME/SGSN from the UE subscription information sent by the HSS/HLR, or may be the PCRF/ANDSF according to the UE subscription information, service usage, location change information, account information, or At least one of the network policies is generated and sent to the MME/SGSN.
  • the MME/SGSN may directly forward the information to the access node of the cellular access network, or may be modified according to the local policy and sent to the access node of the cellular access network. If the UE is in the roaming network,
  • the local policy on which the MME/SGSN is based may be a policy of the WLAN and cellular network selection of the visited operator.
  • the modification according to the local policy may be to adjust the priority order of the wireless access technology type and the WLAN, or to adjust the priority order of different networks of the WLAN, or to add or prohibit certain WLAN networks.
  • the WLAN selection information includes identification information of the selected network, such as an SSID (Service Set Identification), an SSID+HESSID (Homogenous Extended Service Set Identifier), and an OUI (Organization Universal) Identity organization global identity) or BSSID (Basic Service Set Identification) and so on.
  • the priority information may be set according to different granularities according to requirements, may be set according to the granularity of the cellular network and the WLAN, or may be set according to the granularity of the access technology type of the cellular network and the WLAN, and further, the WLAN may also be thin.
  • the WLAN is divided into different identifiers, and the like, which is not specifically limited in this embodiment.
  • the priority information includes at least two
  • the selection module is used to:
  • the WLAN selection information further includes a load condition
  • the selection module is configured to:
  • the WLAN selection information further includes load information of the at least two WLAN networks; and the selecting module is configured to:
  • the WLAN selection information further includes a signal quality condition
  • the selecting module is configured to:
  • the WLAN network selecting, according to the priority information and the signal quality condition, the WLAN network, wherein the signal received by the UE in the selected WLAN network satisfies the signal quality condition.
  • the WLAN selection information further includes signal quality information of the at least two WLAN networks
  • the selection module is used to:
  • the WLAN selection information further includes a location condition
  • the selecting module is configured to:
  • a WLAN network for the UE, wherein the UE is located within an area indicated in the location condition or outside an area indicated in the location condition.
  • the UE may select the highest priority for the UE according to the type of the wireless cellular access technology and the priority information of the WLAN in a specified time period or any time except the specified time period.
  • the internet The internet.
  • the load condition, the signal quality condition, the location condition, and the specified time period may also be applied in any combination, that is, the WLAN selection information may include a load condition, a signal quality condition, a location condition, and a specified time period. Any one or several.
  • the load of the WLAN satisfies the load condition, and specifically includes: the load of the WLAN is less than or greater than a set first threshold.
  • the signal quality of the UE in the WLAN satisfies the signal quality condition, and may specifically include: the signal quality received by the UE in the WLAN is less than or greater than a set second threshold.
  • the area indicated in the location condition includes but is not limited to: a specific location area (LA), a routing area (RA), a tracking area (TA), a controller (RNC ID, SRC ID), and a base station (eNB, NodeB) , BTS) or cell (Cell), etc.
  • LA specific location area
  • RA routing area
  • TA tracking area
  • RNC ID controller
  • SRC ID controller
  • eNB NodeB
  • BTS base station
  • Cell cell
  • the WLAN selection information further includes a domain name of the service provider
  • the sending module is used to:
  • the domain name (realm name) of the service provider may be in the form of a list, and includes one or more domain names.
  • the domain name may include a PLMN (Public Land Mobile Network) ID.
  • the priority of each service provider may be set, and the access node of the cellular access network selects the WLAN that the UE accesses according to the WLAN information that the WLAN network supports (the ability of the WLAN network to connect to the service provider, etc.).
  • the service provider sends it to the UE, which can be one or more.
  • the WLAN selection information sent by the core network to the access node of the cellular access network includes the identifier of the WLAN network
  • the domain name of the service provider used when the UE accesses the WLAN network is also indicated.
  • the obtaining module includes:
  • a first acquiring unit configured to receive WLAN selection information sent by the mobility management entity MME/Serving General Packet Radio Service Technical Support Node SGSN; or
  • the second obtaining unit is configured to receive the WLAN selection information sent by the PCRF/ANDSF after establishing a connection with the policy and charging rule function PCRF/access network discovery and selection function ANDSF.
  • the priority information includes: a priority of an access technology type that accesses the cellular access network, and/or a priority of an access technology type that accesses the WLAN.
  • the access node of the cellular access network may connect to the reconfiguration message by using an air interface exchange message such as an RB (Radio Bearer) setup message or an RRC (Radio Resource Control) Connection Reconfiguration connection reconfiguration message.
  • the UE is instructed to access the network.
  • the selected network identifier and/or the domain name of the service provider may be carried in the above message.
  • the foregoing first device provided in this embodiment may be applied to a cellular access network access node, and the first device may perform the method provided in any one of the foregoing method embodiments.
  • the first device may perform the method provided in any one of the foregoing method embodiments.
  • the description in the method embodiment do not praise.
  • the first device after the UE accesses from the cellular access network, obtains WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN is used for the UE. Accessing is prior to the access by the cellular access network, selecting a WLAN network for the UE according to the WLAN selection information, and instructing the UE to access the selected WLAN network, thereby improving the efficiency of the UE accessing the network and implementing the behavior of the UE. Controllable, the UE can accurately guide the access of the network, which can be automatically completed. Not only the UE saves power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 8
  • this embodiment provides a second device for network selection, including:
  • the receiving module 2101 is configured to receive an indication sent by the access node of the cellular access network, where the indication includes information about the WLAN network selected by the access node of the cellular access network according to the WLAN selection information of the wireless local area network;
  • the access module 2102 is configured to access the WLAN network according to the indication received by the receiving module.
  • the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access for the UE is prioritized over the access by the cellular access network.
  • the indication further includes: a domain name of the service provider;
  • the access module is used to:
  • the domain name of the service provider may be in the form of a list, including one or more domain names.
  • the domain name may include a PLMN (Public Land Mobile Network) ID.
  • the network side may also set the priority of each service provider, and the access node of the cellular access network selects the WLAN accessed by the UE for the UE according to the WLAN information that the WLAN network supports (the ability of the WLAN network to connect to the service provider, etc.)
  • the service provider used is sent to the UE, which may be one or more.
  • the WLAN selection information sent by the core network to the access node of the cellular access network includes the identifier of the WLAN network
  • the domain name of the service provider used when the UE accesses the WLAN network is also indicated. After receiving the domain name, the UE can accurately access the WLAN provided by the corresponding service provider according to the domain name.
  • the UE when the UE accesses the WLAN network selected by the network, the UE may use the domain name to generate a Network Access Identifier (NAI), and use the NAI to authenticate the WLAN network. If there are multiple service provider domain names sent by the access node of the cellular access network, the UE selects the highest priority among the multiple service provider domain names according to the service provider domain name and priority stored by the UE. , generate NAI and use the NAI to authenticate on the WLAN network.
  • NAI Network Access Identifier
  • the priority information includes: a priority of an access technology type accessing the cellular access network, and/or access The priority of the access technology type of the WLAN.
  • the foregoing second device provided in this embodiment may be applied to the UE, and the second device may perform the method provided by any of the foregoing method embodiments.
  • the second device may perform the method provided by any of the foregoing method embodiments.
  • the description in the method embodiment which is not described herein.
  • the foregoing second device provided by the embodiment is configured to receive an indication sent by the access node of the cellular access network, where the indication includes information about the WLAN network selected by the network side according to the WLAN selection information of the wireless local area network, and accessing the WLAN according to the indication.
  • the network thereby improving the efficiency of the UE accessing the network, realizing the controllability of the UE, and accurately guiding the access of the network for the UE, can be automatically completed, not only the UE saves power, but also improves the efficiency of the UE and the user. Experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 9
  • this embodiment provides a third device for network selection, including:
  • the obtaining module 2201 is configured to obtain WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access is used for the UE in preference to the access by using the cellular access network;
  • the sending module 2202 is configured to send the WLAN selection information to a cellular access network access node, where the WLAN selection information is used by the cellular access network access node to select a WLAN network for the UE and instruct the UE to connect Enter the selected WLAN network.
  • the acquiring module includes:
  • a first acquiring unit configured to receive subscription information of the UE sent by the home subscriber server HSS, and obtain WLAN selection information from the subscription information;
  • a second obtaining unit configured to receive a policy and charging rule function, a PCRF/access network discovery and selection function, and WLAN selection information sent by the ANDSF;
  • a third acquiring unit configured to receive WLAN selection information sent by the old MME/SGSN after the UE performs handover or moves to a new location.
  • the WLAN selection information may be obtained by the MME/SGSN from the UE subscription information sent by the HSS/HLR; or may be the PCRF/ANDSF according to the UE subscription information, service usage, location change information, account information, or At least one of the network policies is generated and sent to the MME/SGSN; or may be acquired from the old MME/SGSN when the UE switches or moves to a new location.
  • the MME/SGSN may directly forward the information to the access node of the cellular access network, or may be modified according to the local policy and sent to the access node of the cellular access network.
  • the local policy on which the MME/SGSN is based may be a policy of the WLAN and cellular network selection of the visited operator.
  • the modification according to the local policy may be to adjust the priority order of the wireless access technology type and the WLAN, or to adjust the priority order of different networks of the WLAN, or to add or prohibit certain WLAN networks.
  • the sending module includes:
  • a first sending unit configured to send the WLAN selection information to the cellular base station by using an initial context setup request message when the UE transitions from the idle state to the connected state;
  • a second sending unit configured to send the WLAN selection information to the cellular controller by using a radio access bearer allocation request message
  • a third sending unit configured to send the WLAN selection information to the access node of the cellular access network by using a bearer modification request message
  • a fourth sending unit configured to send the WLAN selection information to the access node of the cellular access network by using a downlink non-access stratum NAS transmission message;
  • a fifth sending unit configured to send the WLAN selection information to the access node of the cellular access network by using a UE context modification request message.
  • the third device further includes: a modifying module, configured to: after the acquiring module acquires the WLAN selection information, select information on the WLAN according to a local policy to modify;
  • the sending module is configured to:
  • the modified WLAN selection information is sent to the access node of the cellular access network.
  • the priority information includes: access technology type of accessing the cellular access network Priority, and/or priority of the type of access technology accessing the WLAN.
  • the foregoing third device provided in this embodiment may be applied to the MME/SGSN, and the third device may perform the method provided by any of the foregoing method embodiments.
  • the third device may perform the method provided by any of the foregoing method embodiments.
  • the description in the method embodiment which is not described herein.
  • the foregoing third device is configured to obtain WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that WLAN access is used for the user equipment UE, and the cellular access network is used. Accessing, sending the WLAN selection information to the access node of the cellular access network, so that the access node of the cellular access network selects a WLAN network for the UE and instructs the UE to access the selected WLAN network, thereby improving the UE connection.
  • the efficiency of the incoming network is controlled, and the behavior of the UE is controllable.
  • the UE can accurately guide the access of the network, which can be automatically completed. Not only does the UE save power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 10
  • the embodiment provides a fourth device for network selection, including:
  • a generating module 2301 configured to generate wireless local area network WLAN selection information, where the WLAN is selected
  • the information includes priority information, where the priority information is used to indicate that adopting WLAN access for the UE is prior to accessing by using the cellular access network;
  • the sending module 2302 is configured to send the WLAN selection information generated by the generating module to a cellular access network access node, where the WLAN selection information is used by the access node of the cellular access network
  • the UE selects a WLAN network and instructs the UE to access the selected WLAN network.
  • the sending module includes:
  • Establishing a connection unit configured to establish a connection with the access node of the cellular access network
  • the first sending unit sends the WLAN selection information to the cellular access network access node by using the established connection;
  • the sending module includes:
  • a second sending unit configured to send the WLAN selection information to a node SGSN by using a packet data network gateway PGW, where the WLAN selection information is sent by the MME/SGSN to the access node of the cellular access network; or The WLAN selection information is sent by the gateway general packet radio service support node GGSN to the serving general packet radio service support node SGSN, and the SGSN sends the WLAN selection information to the cellular access network.
  • PGW packet data network gateway
  • the establishing connection unit is configured to: after the IP-CAN session of the Internet Protocol connectivity access network of the UE is established, to the cellular access network
  • the access node sends a connection setup message to establish a connection with the access node of the cellular access network;
  • the generating module is configured to:
  • WLAN selection information according to at least one of subscription information, service usage, location change information, account information, or network policy of the UE.
  • the subscription information of the UE includes, but is not limited to, information such as a data package and a duration package of the UE.
  • the location change information of the UE includes, but is not limited to, whether the UE is located in a specific location area, a routing area, a tracking area, a cell, and the like.
  • the account information includes, but is not limited to, balance information of the user's account, and the like.
  • the network policy includes but is not limited to: a network load balancing policy, and the like. For example, in the initial situation, the priority of the cellular network in the WLAN selection information of the UE is higher than the priority of the WLAN.
  • the cellular network of the UE When the cellular network traffic plan or the duration package of the UE has been exhausted or is about to be exhausted in the package period, the cellular network of the UE enables The usage fee will increase or the cellular network rate will decrease.
  • the PCRF obtains the UE's package usage status from the charging system, and triggers the WLAN selection information to adjust the WLAN priority to be higher than the priority of the cellular network.
  • the priority information includes: access technology type of accessing the cellular access network Priority, and/or priority of the type of access technology accessing the WLAN.
  • the fourth device provided in this embodiment may be applied to the PCRF/ANDSF, and the fourth device may perform the method provided by any of the foregoing method embodiments. For details, refer to the description in the method embodiment, which is not described herein.
  • the fourth device provided in this embodiment is configured to generate WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access is used for the user equipment UE is prior to the adoption of the cellular access network.
  • Accessing sending the WLAN selection information to the access node of the cellular access network, so that the access node of the cellular access network selects a WLAN network for the UE and instructs the UE to access the selected WLAN network, thereby improving the UE connection.
  • the efficiency of the incoming network is controlled, and the behavior of the UE is controllable.
  • the UE can accurately guide the access of the network, which can be automatically completed. Not only does the UE save power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 11
  • this embodiment provides a cellular access network access node, including:
  • the processor 2401 is configured to obtain, after the user equipment UE accesses from the cellular access network, the WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN is used by the UE.
  • the access priority is higher than the access to the cellular access network; the WLAN network is selected for the UE according to the priority information, where the access priority of the selected WLAN network is higher than the cellular access network;
  • the transmitter 2402 is configured to instruct the UE to access the selected network.
  • the WLAN selection information may be obtained by the MME/SGSN from the UE subscription information sent by the HSS/HLR, or may be the PCRF/ANDSF according to the UE subscription information, service usage, location change information, account information, or At least one of the network policies, generated and sent to MME/SGSN.
  • the MME/SGSN may directly forward the information to the access node of the cellular access network, or may be modified according to the local policy and sent to the access node of the cellular access network. If the UE is in the roaming network,
  • the local policy on which the MME/SGSN is based may be a policy of the WLAN and cellular network selection of the visited operator.
  • the modification according to the local policy may be to adjust the priority order of the wireless access technology type and the WLAN, or to adjust the priority order of different networks of the WLAN, or to add or prohibit certain WLAN networks.
  • the WLAN selection information includes identification information of the selected network, such as an SSID (Service Set Identification), an SSID+HESSID (Homogenous Extended Service Set Identifier), and an OUI (Organization Universal) Identity organization global identity) or BSSID (Basic Service Set Identification) and so on.
  • the priority information may be set according to different granularities according to requirements, may be set according to the granularity of the cellular network and the WLAN, or may be set according to the granularity of the access technology type of the cellular network and the WLAN, and further, the WLAN may also be thin.
  • the WLAN is divided into different identifiers, and the like, which is not specifically limited in this embodiment.
  • the priority information includes priority information of at least two WLAN networks; the processor is configured to:
  • the WLAN selection information further includes a load condition
  • the processor is configured to: according to the priority information and the load The condition is that the UE selects a WLAN network, wherein the selected WLAN network satisfies the load condition.
  • the WLAN selection information further includes load information of the at least two WLAN networks; the processor is configured to:
  • the WLAN selection information further includes a signal quality condition
  • the processor is configured to: according to the priority information and the The signal quality condition is that the UE selects a WLAN network, wherein a signal received by the UE in the selected WLAN network satisfies the signal quality condition.
  • the WLAN selection information further includes signal quality information of the at least two WLAN networks, where the processor is configured to:
  • the WLAN selection information further includes a location condition
  • the processor is configured to:
  • a WLAN network for the UE, wherein the UE is located within an area indicated in the location condition or outside an area indicated in the location condition.
  • the highest priority network may be selected for the UE according to the type of the wireless cellular access technology and the priority information of the WLAN in a specified time period or at any time other than the specified time period.
  • the load condition, the signal quality condition, the location condition, and the specified time period may also be applied in any combination, that is, the WLAN selection information may include a load condition, a signal quality condition, a location condition, and a specified time period. Any one or several.
  • the load of the WLAN satisfies the load condition, and specifically includes: the load of the WLAN is less than or greater than a set first threshold.
  • the signal quality of the UE in the WLAN satisfies the signal quality condition, and may specifically include: the signal quality received by the UE in the WLAN is less than or greater than a set second threshold.
  • the area indicated in the location condition includes but is not limited to: a specific location area (LA), a routing area (RA), a tracking area (TA), a controller (RNC ID, SRC ID), and a base station (eNB, NodeB) , BTS) or cell (Cell), etc.
  • LA specific location area
  • RA routing area
  • TA tracking area
  • RNC ID controller
  • SRC ID controller
  • eNB NodeB
  • BTS base station
  • Cell cell
  • the WLAN selection information further includes a domain name of the service provider
  • the transmitter is used to:
  • the domain name (realm name) of the service provider may be in the form of a list, and includes one or more domain names.
  • the domain name may include a PLMN (Public Land Mobile Network) ID.
  • the priority of each service provider may also be set, and the access node of the cellular access network according to the WLAN information that it has mastered (WLAN network support) The capability of connecting to the service provider, etc.) is sent to the UE by the service provider used by the UE to select the WLAN to which the UE accesses, and may be one or more.
  • the WLAN selection information sent by the core network to the access node of the cellular access network includes the identifier of the WLAN network
  • the domain name of the service provider used when the UE accesses the WLAN network is also indicated.
  • a receiver is further included; the receiver is configured to: send WLAN selection information; or
  • the WLAN selection information sent by the PCRF/ANDSF is received.
  • the priority information includes: accessing the cellular access network The priority of the incoming technology type, and/or the priority of the access technology type that accesses the WLAN.
  • the access node of the cellular access network may connect to the reconfiguration message by using an air interface exchange message such as an RB (Radio Bearer) setup message or an RRC (Radio Resource Control) Connection Reconfiguration connection reconfiguration message.
  • the UE is instructed to access the network.
  • the selected network identifier and/or the domain name of the service provider may be carried in the above message.
  • the above-mentioned cellular access network access node provided in this embodiment may perform the method provided by any of the foregoing method embodiments.
  • the above-mentioned cellular access network access node provided in this embodiment may perform the method provided by any of the foregoing method embodiments.
  • the foregoing access network access node after the UE accesses the cellular access network, obtains WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate
  • the UE adopts the WLAN access in preference to the access by the cellular access network, selects a WLAN network for the UE according to the WLAN selection information, and instructs the UE to access the selected WLAN network, thereby improving the efficiency of the UE accessing the network.
  • the behavior of the UE is controllable, and the UE is accurately guided to access the network, which can be automatically completed. Not only the UE saves power, but also improves the efficiency of the UE and the user experience.
  • this embodiment provides a UE, including:
  • the receiver 2501 is configured to receive an indication sent by the access node of the cellular access network, where the indication includes information about the WLAN network selected by the access node of the cellular access network according to the WLAN selection information of the wireless local area network;
  • the processor 2502 is configured to access the WLAN network according to the indication
  • the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access for the UE is prioritized over the access by the cellular access network.
  • the indication further includes: a domain name of the service provider
  • the processor is used to:
  • Accessing the WLAN provided by the service provider according to the information of the network and the domain name in the indication.
  • the domain name of the service provider may be in the form of a list, including one or more domain names.
  • the domain name may include a PLMN (Public Land Mobile Network) ID.
  • the network side may also set the priority of each service provider, and the access node of the cellular access network selects the WLAN accessed by the UE for the UE according to the WLAN information that the WLAN network supports (the ability of the WLAN network to connect to the service provider, etc.)
  • the service provider used is sent to the UE, which may be one or more.
  • the WLAN selection information sent by the core network to the access node of the cellular access network includes the identifier of the WLAN network
  • the domain name of the service provider used when the UE accesses the WLAN network is also indicated. After receiving the domain name, the UE can accurately access the WLAN provided by the corresponding service provider according to the domain name.
  • the UE when the UE accesses the WLAN network selected by the network, the UE may use the domain name to generate a Network Access Identifier (NAI), and use the NAI to authenticate the WLAN network. If there are multiple service provider domain names sent by the access node of the cellular access network, the UE selects the highest priority among the multiple service provider domain names according to the service provider domain name and priority stored by the UE. , generate NAI and use the NAI to authenticate on the WLAN network.
  • NAI Network Access Identifier
  • the priority information includes: a priority of an access technology type that accesses the cellular access network, and/or accesses the The priority of the access technology type of the WLAN.
  • the above-mentioned UE provided in this embodiment may perform the method provided by any of the foregoing method embodiments.
  • the foregoing UE provides the indication sent by the access node of the cellular access network, where the indication includes the information of the WLAN network selected by the network side according to the WLAN selection information of the wireless local area network, and accesses the WLAN network according to the indication, Therefore, the efficiency of the UE accessing the network is improved, the behavior of the UE is controllable, and the access of the network is accurately guided by the UE, which can be automatically completed, not only the UE saves power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 13
  • this embodiment provides a mobility management network element, including:
  • the processor 2601 is configured to obtain WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access is used for the UE is prior to the access by using the cellular access network.
  • the transmitter 2602 is configured to send the WLAN selection information to a cellular access network access node, where the WLAN selection information is used by the cellular access network access node to select a WLAN network for the UE and instruct the UE to connect Enter the selected WLAN network.
  • the mobility management network element further includes a receiver
  • the receiver is configured to receive subscription information of the UE sent by a home subscriber server HSS; correspondingly, the processor acquires WLAN selection information from the subscription information; or
  • the receiver is configured to receive a policy and charging rule function, a PCRF/access network discovery and selection function, and WLAN selection information sent by the ANDSF; or
  • the receiver is configured to receive WLAN selection information sent by an old mobile management network element when the UE initiates handover or moves to a new location.
  • the mobility management network element may be specifically an MME/SGSN.
  • the WLAN selection information may be obtained by the MME/SGSN from the UE subscription information sent by the HSS/HLR; or may be the PCRF/ANDSF according to the UE subscription information, service usage, location change information, account information, or At least one of the network policies is generated and sent to the MME/SGSN; or may be acquired from the old MME/SGSN when the UE switches or moves to a new location.
  • the MME/SGSN can directly switch to It is sent to the access node of the cellular access network, or may be modified according to the local policy and sent to the access node of the cellular access network. If the UE is in the roaming network, the local policy according to the MME/SGSN may be operated at the visited location.
  • the modification according to the local policy may be to adjust the priority order of the wireless access technology type and the WLAN, or to adjust the priority order of different WLAN networks, or to add or prohibit certain WLAN networks.
  • the transmitter is configured to: when the UE transitions from an idle state to a connected state, send the WLAN selection information to a cell by using an initial context setup request message.
  • Base station or,
  • the WLAN selection information is sent to the cellular access network access node by a UE context modification request message.
  • the processor is further configured to: after obtaining the WLAN selection information, modify the WLAN selection information according to a local policy;
  • the transmitter is used to:
  • the modified WLAN selection information is sent to the access node of the cellular access network.
  • the priority information includes: an access technology type that accesses the cellular access network Priority of, and/or priority of access technology type accessing the WLAN.
  • an access technology type that accesses the cellular access network Priority of, and/or priority of access technology type accessing the WLAN.
  • the foregoing mobility management network element obtains WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access is used for the user equipment UE, and the cellular access is used.
  • the network access, the WLAN selection information is sent to the access node of the cellular access network, so that the access node of the cellular access network selects a WLAN network for the UE and instructs the UE to access the selected WLAN network, thereby improving the UE.
  • Access network efficiency implementation The behavior of the UE is controllable, and the UE is accurately guided to access the network, which can be automatically completed. Not only the UE saves power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 14
  • this embodiment provides a PCRF/ANDSF, including:
  • the processor 2701 is configured to generate wireless local area network WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that adopting WLAN access for the UE is prior to using the cellular access network. ;
  • the transmitter 2702 is configured to send the WLAN selection information to a cellular access network access node, where the WLAN selection information is used by the cellular access network access node to select a WLAN network for the UE and instruct the UE to connect Enter the selected WLAN network.
  • the transmitter is configured to: establish a connection with a cellular access network access node;
  • the transmitter is used to:
  • the wireless service support node SGSN sends the WLAN selection information to the cellular access network access node by the SGSN.
  • the transmitter is configured to: after the IP-CAN session of the Internet Protocol Connectivity Access Network of the UE is established, connect to the cellular access network.
  • the ingress node sends a connection setup message to establish a connection with the access node of the cellular access network; or
  • the PCRF/ANDSF further includes a receiver, configured to: receive a connection establishment message sent by the cellular access network access node after the UE transitions from an idle state to a connected state, and correspondingly, The transmitter and receiver are used to establish a connection with the cellular access network access node.
  • the processor is configured to: generate a WLAN selection according to at least one of subscription information, service usage, location change information, account information, or network policy of the UE. information.
  • the subscription information of the UE includes, but is not limited to, a data package, a duration package, and the like of the UE.
  • the location change information of the UE includes, but is not limited to, whether the UE is located in a specific location area, a routing area, a tracking area, a cell, and the like.
  • the account information includes, but is not limited to, balance information of the user's account, and the like.
  • the network policy includes but is not limited to: a network load balancing policy, and the like. For example, in the initial situation, the priority of the cellular network in the WLAN selection information of the UE is higher than the priority of the WLAN.
  • the cellular network of the UE When the cellular network traffic plan or duration package of the UE is exhausted or is about to be exhausted in the tier period, the cellular network of the UE is used. The fee will increase or the cellular network rate will decrease.
  • the PCRF obtains the UE's package usage status from the charging system, and triggers the WLAN selection information to adjust the WLAN priority to be higher than the priority of the cellular network.
  • the priority information includes: access technology type accessing the cellular access network Priority, and/or priority of the type of access technology accessing the WLAN.
  • PCRF/ANDSF provided in this embodiment may perform the method provided by any of the foregoing method embodiments.
  • the foregoing PCRF/ANDSF provided by the embodiment is configured to generate WLAN selection information, where the WLAN selection information includes priority information, where the priority information is used to indicate that WLAN access is used for the user equipment UE in preference to adopting the cellular access network.
  • Accessing sending the WLAN selection information to the access node of the cellular access network, so that the access node of the cellular access network selects a WLAN network for the UE and instructs the UE to access the selected WLAN network, thereby improving the UE connection.
  • the efficiency of the incoming network is controlled, and the behavior of the UE is controllable.
  • the UE can accurately guide the access of the network, which can be automatically completed. Not only does the UE save power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • Example 15
  • this embodiment provides a network selection system, including: cellular access network access Node 2801, and user equipment UE 2802;
  • the cellular access network access node 2801 may be a cellular access network access node as described in Embodiment 11, or may be a cellular access network access node including the first device as described in Embodiment 7.
  • the UE 2802 may be the UE as described in Embodiment 12 or may also be a UE including the second device as described in Embodiment 8.
  • the foregoing system provided in this embodiment may perform the method provided by any of the foregoing method embodiments.
  • the above-mentioned system provided by the embodiment after the UE accesses the cellular access network, obtains WLAN selection information by using the access node of the cellular access network, where the WLAN selection information includes priority information, and the priority information is used to indicate that
  • the user equipment UE adopts the WLAN access in preference to the access by the cellular access network selects a WLAN network for the UE according to the WLAN selection information, and instructs the UE to access the selected WLAN network.
  • the UE receives the indication.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively divert the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • this embodiment provides a network selection system, including: a cellular access network access node 2901, a user equipment UE 2902, and a mobility management network element 2903;
  • the cellular access network access node 2901 includes the cellular access network access node as described in Embodiment 11, or may be a cellular access network access node including the first device as described in Embodiment 7;
  • the UE 2902 may be the UE as described in Embodiment 12, or may also be a UE including the second device as described in Embodiment 8;
  • the mobility management network element 2903 may be a mobility management network element as described in Embodiment 13, or may be a mobility management network element including the third device as described in Embodiment 9.
  • the foregoing system provided in this embodiment may perform the method provided by any of the foregoing method embodiments.
  • the above system provided by the embodiment, after the UE accesses from the cellular access network, acquires WLAN selection information by using the mobility management network element, and sends the WLAN selection information to the access node of the cellular access network, where the WLAN selection information packet
  • the priority information is used to indicate that the WLAN access is used for the user equipment UE in preference to the access using the cellular access network, and the cellular access network access node selects a network for the UE according to the WLAN selection information.
  • the UE accesses the network selected by the network side according to the indication, thereby improving the efficiency of the UE accessing the network, achieving controllable behavior of the UE, and being accurate for the UE.
  • the guidance of the network access can be done automatically, not only the UE saves power, but also improves the efficiency of the UE and the user experience.
  • the UE can access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network can effectively offload the data traffic pressure for the cellular network, thereby improving the overall Net throughput.
  • this embodiment provides a network selection system, including: a cellular access network access node 3001, a user equipment UE 3002, and a policy and charging rule function PCRF/access network discovery and selection function ANDSF 3003. ;
  • the cellular access network access node 3001 includes the cellular access network access node as described in Embodiment 11, or may be a cellular access network access node including the first device as described in Embodiment 7;
  • the UE 3002 may be the UE as described in Embodiment 12, or may also be a UE including the second device as described in Embodiment 8;
  • the PCRF/ANDSF 3003 may be the PCRF/ANDSF as described in Example 14, or may be a PCRF/ANDSF comprising the fourth device as described in Example 10.
  • the foregoing system provided in this embodiment may perform the method provided by any of the foregoing method embodiments.
  • the system provided by this embodiment generates WLAN selection information by using a PCRF/ANDSF, where the WLAN selection information includes priority information, where the priority information is used to indicate that the WLAN access is used for the user equipment UE, and the cellular access is used.
  • the network access, the WLAN selection information is sent to the access node of the cellular access network, and the access node of the cellular access network selects a network for the UE according to the WLAN selection information, and instructs the UE to access the selected network.
  • the UE accesses the network according to the indication, thereby improving the efficiency of the UE accessing the network, realizing controllable behavior of the UE, and accurately guiding the access of the network for the UE, which can be automatically completed, not only the UE saves power, but also improves.
  • the UE can also access and use the service in the WLAN, which effectively improves the success rate of the UE accessing the WLAN and the usage rate of the WLAN network, so that the WLAN network It can effectively divert data traffic pressure for the cellular network and improve the throughput of the entire network.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本发明实施例提供了一种网络选择的方法、装置和系统,涉及通信领域,所述方法包括:在用户设备UE从蜂窝接入网接入后,蜂窝接入网接入节点获取无线局域网WLAN选择信息,所述WLAN选择信息包含优先级信息,所述优先级信息用于指示对于所述UE采用WLAN接入优先于采用所述蜂窝接入网接入;蜂窝接入网接入节点根据所述优先级信息为UE选择WLAN网络,其中,所述选择的WLAN网络的接入优先级高于蜂窝接入网;蜂窝接入网接入节点指示UE接入所选择的WLAN 网络。所述装置包括:获取模块、选择模块和发送模块。所述系统包括:UE以及蜂窝接入网接入节点。本发明提高了UE接入网络的效率,实现UE的行为可控。

Description

网络选择的方法、 装置和系统 技术领域
本发明涉及通信领域, 特别涉及一种网络选择的方法、 装置和系统。 背景技术
近年来, 智能终端和移动应用的迅速普及带来了移动互联网的快速发展, 给移动网络带来大数据量沖击,全球范围内运营商的 2G/3G移动网络频频发生 超负荷的情况。 由于目前和未来绝大多数的智能终端都支持 WLAN ( Wireless Local Area Network, 无线局域网), 在 LTE ( Long Term Evolution, 长期演进) 广泛部署以前, 原本主要用于企业和家庭场景的 WLAN被业界普遍视作一种 能够为运营商卸载移动网络数据流量的途径而广受关注。 如何将采用 WLAN 技术的网络改进为蜂窝运 /营商可运营或可与蜂窝运营商网络互通的网络形态, 是 4艮多运营商希望首先解决的问题。当前已有运营商在部署 femto celK pico cell 或 micro cell等蜂窝网络小型基站时, 同时在基站上集成 WLAN AP ( Access Point, 接入点 ), 可以解决 WLAN AP的布放以及与蜂窝网络小型基站的传输 资源的共用问题。
当 WLAN AP布放好以后, UE ( User Equipment , 用户设备 ) 可以通过内 部的 WLAN模块来扫描和接入 WLAN ΑΡ。但是,由于非授权频谱系统的性质, 会存在大量 UE在扫描到 WLAN AP之后却无法接入和访问业务的情景。而且, UE持续不断的扫描、 尝试接入周围的 WLAN AP不仅消耗了系统资源, 也增 加了功耗, 如果 UE 自动接入恶意网络, 也可能带来安全隐患。 对于 WLAN 和 3GPP( 3rd Generation Partnership Project,第三代合作伙伴计划) RAT( Radio Access Technology, 无线接入技术) 的双模或多模终端来说, 为了省电、 安全 和性能等原因, 一般情况下其 WLAN模块是关闭的。 因此, 如何实现 UE对 WLAN AP有效的发现和选择, 是迫切需要解决的问题。
针对上述问题, 3GPP引入了 ANDSF ( Access Network Discovery Support Functions, 接入网络发现与选择功能)机制, 通过布置于核心网的基于用户面 的 ANDSF实体下发接入网络发现信息、 跨系统移动性策略以及跨系统路由策 略等给 UE, UE在合适的条件下, 自己决策打开 WLAN模块, 选择和接入特 定网络。
但是,上述技术方案中, ANDSF通过核心网服务器发送信息和策略给 UE, 这种交互不但增加了时延和网络负担, 而且由于核心网服务器无法及时准确的 获得各种无线局域网的位置拓朴和状态, 其效率较低, 且 UE在何时触发利用 策略和执行均是 UE自己实现, 行为不可控。 发明内容
本发明提供了一种网络选择的方法、 装置和系统, 以提高 UE接入网络的 效率, 实现 UE的行为可控。 所述技术方案如下:
第一方面, 本发明提供了一种网络选择的方法, 包括:
在用户设备 UE从蜂窝接入网接入后, 蜂窝接入网接入节点获取无线局域 网 WLAN选择信息, 所述 WLAN选择信息包含优先级信息, 所述优先级信息 用于指示对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入; 所述蜂窝接入网接入节点根据所述优先级信息为所述 UE选择 WLAN网 络, 其中, 所述选择的 WLAN网络的接入优先级高于所述蜂窝接入网;
所述蜂窝接入网接入节点指示所述 UE接入所述选择的 WLAN网络。 其中, 所述选择的 WLAN 网络的接入优先级高于所述蜂窝接入网是指, 所述 UE接入所述 WLAN网络优先于接入所述蜂窝接入网。
结合上述方法, 在第一种实施方式下, 所述优先级信息包含至少两个 WLAN网络的优先级信息;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述至少两个 WLAN网络的优先级信息, 选择所述至少两个 WLAN 网络中优先级最高的 WLAN网络。 或者, 也可以选择优先级不是最高但是也 不是最低的 WLAN网络。
结合上述方法或第一种实施方式, 在第二种实施方式下, 所述 WLAN选 择信息还包含负载条件;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述优先级信息和所述负载条件为所述 UE选择 WLAN网络, 其中 所述选择的 WLAN网络满足所述负载条件。
结合上述第一种实施方式, 在第三种实施方式下, 所述 WLAN选择信息 还包含所述至少两个 WLAN网络的负载信息;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的负载信息, 选择所述至少两个 WLAN 网络中优先级最高且负载最低的
WLAN网络。 或者, 也可以选择优先级不是最高且不是最低, 且负载不是最低 但也不是最高的 WLAN网络。
结合上述方法或第一种实施方式, 在第四种实施方式下, 所述 WLAN选 择信息还包含信号质量条件,
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述优先级信息和所述信号质量条件为所述 UE选择 WLAN网络, 其中, 所述 UE在所述选择的 WLAN网络中接收的信号满足所述信号质量条 件。
结合上述第四种实施方式, 在第五种实施方式下, 所述 WLAN选择信息 还包含所述至少两个 WLAN网络的信号质量信息;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的信号质量信息, 选择所述至少两个 WLAN 网络中优先级最高且信号质量最 好的 WLAN 网络。 或者, 也可以选择优先级不是最高且不是最低, 且信号质 量不是最好但也不是最差的 WLAN网络。 例如, 信号质量好坏可以通过信号 强度高低来判断, 信号强度最高, 表示信号质量最好, 信号强度最低, 表示信 号质量最差。 当然, 信号质量也可以通过其它参数来表示, 如误码率等, 误码 率越高, 信号质量越差, 误码率越低, 信号质量越好。
结合上述方法, 在第六种实施方式下, 所述 WLAN选择信息还包含位置 条件;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述优先级信息和所述位置条件为所述 UE选择 WLAN网络, 其中 所述 UE位于所述位置条件中指示的区域之内或者位于所述位置条件中指示的 区域之外。
结合上述方法或上述任一种实施方式,在第七种实施方式下,所述 WLAN 选择信息还包含服务提供商的域名称;
所述蜂窝接入网接入节点指示所述 UE接入所述选择的 WLAN网络, 包 括:
所述蜂窝接入网接入节点指示所述 UE接入所述服务提供商提供的所述选 择的 WLAN网络。
结合上述方法或上述任一种实施方式, 在第八种实施方式下, 所述蜂窝接 入网接入节点获取无线局域网 WLAN选择信息, 包括:
所述蜂窝接入网接入节点接收移动性管理实体 MME或服务通用分组无线 服务技术支持节点 SGSN发送的所述 WLAN选择信息; 或者,
所述蜂窝接入网接入节点在与策略和计费规则功能 PCRF或接入网络发现 与选择功能 ANDSF之间建立连接后, 接收所述 PCRF或 ANDSF发送的所述 WLAN选择信息。
结合上述方法或上述任一种实施方式, 在第九种实施方式下, 所述优先级 信息包含:
接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN 的接入技术类型的优先级。 第二方面, 本发明提供了一种网络选择的方法, 包括:
接收蜂窝接入网接入节点发送的指示, 所述指示中包括所述蜂窝接入网接 入节点根据无线局域网 WLAN选择信息所选择的 WLAN网络的信息;
根据所述指示接入所述 WLAN网络;
其中, 所述 WLAN选择信息包括优先级信息, 所述优先级信息用于指示 所述 UE采用 WLAN接入优先于采用蜂窝接入网接入。
结合上述第二方面, 在第一种实施方式下, 所述指示中还包括: 服务提供 商的域名称;
根据所述指示接入所述 WLAN网络, 包括:
根据所述指示中的所述 WLAN网络的信息和所述域名称, 接入所述服务 提供商提供的所述 WLAN。
结合上述第二方面或第一种实施方式, 在第二种实施方式下, 所述优先级 信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。 第三方面, 本发明提供了一种网络选择的方法, 包括: 线局域网 WLAN选择信息, 所述 WLAN选择信息包括优先级信息, 所述优先 级信息用于指示对于用户设备 UE采用 WLAN接入优先于采用所述蜂窝接入 网接入;
所述 MME/SGSN将所述 WLAN选择信息发送给蜂窝接入网接入节点,所 述 WLAN选择信息用于所述蜂窝接入网接入节点为所述 UE选择一个 WLAN 网络并指示所述 UE接入所选择的 WLAN网络。
结合上述第三方面, 在第一种实施方式下, MME/SGSN获取 WLAN选择 信息, 包括:
所述 MME/SGSN接收归属用户服务器 HSS发送的所述 UE的签约信息, 从所述签约信息中获取 WLAN选择信息; 或者,
所述 MME/SGSN接收策略和计费规则功能 PCRF/接入网络发现与选择功 能 ANDSF发送的 WLAN选择信息; 或者,
所述 MME/SGSN在所述 UE发生切换时或移动到新的位置后接收老的 MME/SGSN发送的 WLAN选择信息。
结合上述第三方面,在第二种实施方式下,所述 MME/SGSN将所述 WLAN 选择信息发送给蜂窝接入网接入节点, 包括:
所述 MME在所述 UE从空闲态转为连接态时, 通过初始上下文建立请求 消息将所述 WLAN选择信息发送给蜂窝基站; 或者,
所述 SGSN通过无线接入承载分配请求消息将所述 WLAN选择信息发送 给蜂窝控制器; 或者,
所述 MME/SGSN通过承载修改请求消息,将所述 WLAN选择信息发送给 所述蜂窝接入网接入节点; 或者,
所述 MME/SGSN通过下行非接入层 NAS传输消息将所述 WLAN选择信 息发送给所述蜂窝接入网接入节点; 或者,
所述 MME/SGSN通过 UE上下文修改请求消息,将所述 WLAN选择信息 发送给所述蜂窝接入网接入节点。
结合上述第三方面, 在第三种实施方式下, MME/SGSN获取 WLAN选择 信息之后, 还包括: 相应地,所述 MME/SGSN将所述 WLAN选择信息发送给蜂窝接入网接入 节点, 包括:
所述 MME/SGSN将修改后的 WLAN选择信息发送给所述蜂窝接入网接入 节点。
结合上述第三方面或第一种至第三种实施方式中的任一种,在第四种实施 方式下,所述优先级信息包含:接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。 第四方面, 本发明提供了一种网络选择的方法, 包括:
策略和计费规则功能 PCRF/接入网络发现与选择功能 ANDSF生成无线局 域网 WLAN选择信息, 所述 WLAN选择信息包含优先级信息, 所述优先级信 息用于指示对于用户设备 UE采用 WLAN接入优先于采用所述蜂窝接入网接 入;
所述 PCRF/ANDSF将所述 WLAN选择信息发送给蜂窝接入网接入节点, 所述 WLAN 选择信息用于所述蜂窝接入网接入节点为所述 UE 选择一个 WLAN网络并指示所述 UE接入所选择的 WLAN网络。
结合上述第四方面, 在第一种实施方式下, 所述 PCRF/ANDSF 将所述 WLAN选择信息发送给蜂窝接入网接入节点, 包括:
所述 PCRF/ANDSF与蜂窝接入网接入节点之间建立连接, 通过已建立的 连接将所述 WLAN选择信息发送给所述蜂窝接入网接入节点; 或者,
所述 PCRF/ANDSF 将所述 WLAN 选择信息发送给分组数据网络网关 PGW, 所述 PGW将所述 WLAN选择信息发送给服务网关 SGW, 所述 SGW 技术支持节点 SGSN,所述 MME/SGSN将所述 WLAN选择信息发送给所述蜂 窝接入网接入节点; 或者,
所述 PCRF/ANDSF将所述 WLAN选择信息发送给网关通用分组无线业务 支持节点 GGSN, 所述 GGSN将所述 WLAN选择信息发送给服务通用分组无 线业务支持节点 SGSN, 所述 SGSN将所述 WLAN选择信息发送给所述蜂窝 接入网接入节点。
结合上述第一种实施方式, 在第二种实施方式下, 所述 PCRF/ANDSF与 蜂窝接入网接入节点之间建立连接, 包括:
所述 PCRF/ANDSF在所述 UE的网际协议连通性接入网络 IP-CAN会话建 立后, 向所述蜂窝接入网接入节点发送连接建立消息, 与所述蜂窝接入网接入 节点建立连接; 或者,
所述 PCRF/ANDSF接收所述蜂窝接入网接入节点在所述 UE从空闲态转 为连接态后发送的连接建立消息, 与所述蜂窝接入网接入节点建立连接。
结合上述第四方面, 在第三种实施方式下, PCRF/ANDSF生成 WLAN选 择信息, 包括:
所述 PCRF/ANDSF根据所述 UE的签约信息、 业务使用情况、 位置变化 信息、 账户信息或网络策略中的至少一种, 生成 WLAN选择信息。
结合上述第四方面或第一种至第三种实施方式中的任一种,在第四种实施 方式下,所述优先级信息包含:接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。 第五方面, 本发明提供了一种网络选择的第一装置, 包括:
获取模块, 用于在用户设备 UE从蜂窝接入网接入后, 获取无线局域网
WLAN选择信息, 所述 WLAN选择信息包含优先级信息, 所述优先级信息用 于指示对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入;
选择模块, 用于根据所述优先级信息为所述 UE选择 WLAN网络, 其中, 所述选择的 WLAN网络的接入优先级高于所述蜂窝接入网;
发送模块, 用于指示所述 UE接入所述选择的 WLAN网络。
结合上述第五方面, 在第一种实施方式下, 所述优先级信息包含至少两个
WLAN网络的优先级信息;
所述选择模块用于:
根据所述至少两个 WLAN网络的优先级信息, 选择所述至少两个 WLAN 网络中优先级最高的 WLAN网络。
结合上述第五方面或第一种实施方式,在第二种实施方式下,所述 WLAN 选择信息还包括负载条件, 所述选择模块用于:
根据所述优先级信息和所述负载条件为所述 UE选择 WLAN网络, 其中 所述选择的 WLAN网络满足所述负载条件。
结合上述第一种实施方式, 在第三种实施方式下, 所述 WLAN选择信息 还包含所述至少两个 WLAN网络的负载信息;
所述选择模块用于: 根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的负载信息, 选择所述至少两个 WLAN 网络中优先级最高且负载最低的 WLAN网络。
结合上述第五方面或第一种实施方式,在第四种实施方式下,所述 WLAN 选择信息还包括信号质量条件, 所述选择模块用于:
根据所述优先级信息和所述信号质量条件为所述 UE选择 WLAN网络, 其中, 所述 UE在所述选择的 WLAN网络中接收的信号满足所述信号质量条 件。
结合上述第四种实施方式, 在第五种实施方式下, 所述 WLAN选择信息 还包含所述至少两个 WLAN网络的信号质量信息;
所述选择模块用于:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的信号质量信息, 选择所述至少两个 WLAN 网络中优先级最高且信号质量最 好的 WLAN网给。
结合上述第五方面, 在第六种实施方式下, 所述 WLAN选择信息还包括 位置条件, 所述选择模块用于:
根据所述优先级信息和所述位置条件为所述 UE选择 WLAN网络, 其中 所述 UE位于所述位置条件中指示的区域之内或者位于所述位置条件中指示的 区域之外。
结合上述第五方面或上述任一种实施方式, 在第七种实施方式下, 所述 WLAN选择信息还包含服务提供商的域名称;
所述发送模块用于:
指示所述 UE接入所述服务提供商提供的所述 WLAN。
结合上述第五方面或上述任一种实施方式, 在第八种实施方式下, 所述获 取模块包括:
第一获取单元, 用于接收移动性管理实体 MME/服务通用分组无线服务技 术支持节点 SGSN发送的 WLAN选择信息; 或者,
第二获取单元, 用于在与策略和计费规则功能 PCRF/接入网络发现与选择 功能 ANDSF之间建立连接后, 接收所述 PCRF/ANDSF发送的 WLAN选择信 息。
结合上述第五方面或上述任一种实施方式, 在第九种实施方式下, 所述优 先级信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或,接入所 述 WLAN的接入技术类型的优先级。 第六方面, 本发明提供了一种网络选择的第二装置, 包括:
接收模块, 用于接收蜂窝接入网接入节点发送的指示, 所述指示中包括所 述蜂窝接入网接入节点根据无线局域网 WLAN选择信息所选择的 WLAN网络 的信息;
接入模块, 用于根据所述接收模块接收的所述指示接入所述 WLAN网络; 其中, 所述 WLAN选择信息包含优先级信息, 所述优先级信息用于指示 对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入。
结合上述第六方面, 在第一种实施方式下, 所述指示中还包括: 服务提供 商的域名称;
所述接入模块用于:
根据所述指示中的所述 WLAN网络的信息和所述域名称, 接入所述服务 提供商提供的所述 WLAN。
结合上述第六方面或第一种实施方式, 在第二种实施方式下, 所述优先级 信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。 第七方面, 本发明提供了一种网络选择的第三装置, 包括:
获取模块, 用于获取无线局域网 WLAN选择信息, 所述 WLAN选择信息 包含优先级信息, 所述优先级信息用于指示对于用户设备 UE采用 WLAN接 入优先于采用所述蜂窝接入网接入;
发送模块, 用于将所述 WLAN选择信息发送给蜂窝接入网接入节点, 所 述 WLAN选择信息用于所述蜂窝接入网接入节点为所述 UE选择一个 WLAN 网络并指示所述 UE接入所选择的 WLAN网络。
结合上述第七方面, 在第一种实施方式下, 所述获取模块包括:
第一获取单元,用于接收归属用户服务器 HSS发送的所述 UE的签约信息, 从所述签约信息中获取 WLAN选择信息; 或者,
第二获取单元, 用于接收策略和计费规则功能 PCRF/接入网络发现与选择 功能 ANDSF发送的 WLAN选择信息; 或者, 第三获取单元, 用于在所述 UE发生切换时或移动到新的位置后接收老的 MME/SGSN发送的 WLAN选择信息。
结合上述第七方面, 在第二种实施方式下, 所述发送模块包括:
第一发送单元, 用于在所述 UE从空闲态转为连接态时, 通过初始上下文 建立请求消息将所述 WLAN选择信息发送给蜂窝基站; 或者,
第二发送单元, 用于通过无线接入承载分配请求消息将所述 WLAN选择 信息发送给蜂窝控制器; 或者,
第三发送单元, 用于通过承载修改请求消息, 将所述 WLAN选择信息发 送给所述蜂窝接入网接入节点; 或者,
第四发送单元, 用于通过下行非接入层 NAS传输消息将所述 WLAN选择 信息发送给所述蜂窝接入网接入节点; 或者,
第五发送单元, 用于通过 UE上下文修改请求消息, 将所述 WLAN选择 信息发送给所述蜂窝接入网接入节点。
结合上述第七方面, 在第三种实施方式下, 所述第三装置还包括: 修改模块, 用于在所述获取模块获取所述 WLAN选择信息之后, 根据本 地的策略对所述 WLAN选择信息进行修改;
相应地, 所述发送模块用于:
将修改后的 WLAN选择信息发送给蜂窝接入网接入节点。
结合上述第七方面或第一种至第三种实施方式中的任一种,在第四种实施 方式下,所述优先级信息包含:接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。 第八方面, 本发明提供了一种网络选择的第四装置, 包括:
生成模块, 用于生成无线局域网 WLAN选择信息, 所述 WLAN选择信息 包含优先级信息, 所述优先级信息用于指示对于用户设备 UE采用 WLAN接 入优先于采用所述蜂窝接入网接入;
发送模块, 用于将所述生成模块生成的所述 WLAN选择信息发送给蜂窝 接入网接入节点, 所述 WLAN选择信息用于所述蜂窝接入网接入节点为所述
UE选择一个 WLAN网络并指示所述 UE接入所选择的 WLAN网络。
结合上述第八方面, 在第一种实施方式下, 所述发送模块包括:
建立连接单元, 用于与蜂窝接入网接入节点之间建立连接; 第一发送单元, 通过已建立的连接将所述 WLAN选择信息发送给所述蜂 窝接入网接入节点;
或者, 所述发送模块包括:
第二发送单元, 用于将所述 WLAN选择信息通过分组数据网络网关 PGW 持节点 SGSN, 由所述 MME/SGSN将所述 WLAN选择信息发送给所述蜂窝接 入网接入节点; 或, 将所述 WLAN选择信息通过网关通用分组无线业务支持 节点 GGSN将所述 WLAN选择信息发送给服务通用分组无线业务支持节点 SGSN,由所述 SGSN将所述 WLAN选择信息发送给所述蜂窝接入网接入节点。
结合上述第一种实施方式,在第二种实施方式下,所述建立连接单元用于: 在所述 UE的网际协议连通性接入网络 IP-CAN会话建立后, 向所述蜂窝 接入网接入节点发送连接建立消息, 与所述蜂窝接入网接入节点建立连接; 或 者,
接收所述蜂窝接入网接入节点在所述 UE从空闲态转为连接态后发送的连 接建立消息, 与所述蜂窝接入网接入节点建立连接。
结合上述第八方面, 在第三种实施方式下, 所述生成模块用于:
根据所述 UE的签约信息、 业务使用情况、 位置变化信息、 账户信息或网 络策略中的至少一种, 生成 WLAN选择信息。
结合上述第八方面或第一种至第三种实施方式中的任一种,在第四种实施 方式下,所述优先级信息包含:接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。 第九方面, 本发明提供了一种网络选择的系统, 包括: 蜂窝接入网接入节 点、 以及用户设备 UE;
所述蜂窝接入网接入节点包括如上述第五方面的任一种实施方式下的第 一装置;
所述 UE包括如上述第六方面的任一种实施方式下的第二装置。 第十方面, 本发明提供了一种网络选择的系统, 包括: 蜂窝接入网接入节 点、 用户设备 UE、 以及移动性管理实体 MME/服务通用分组无线服务技术支 持节点 SGSN; 所述蜂窝接入网接入节点包括如上述第五方面的任一种实施方式下的第 一装置;
所述 UE包括如第六方面的任一种实施方式下的第二装置;
所述 MME/SGSN包括如上述第七方面的任一种实施方式下的第三装置。 第十一方面, 本发明提供了一种网络选择的系统, 包括: 蜂窝接入网接入 节点、 用户设备 UE、 以及策略和计费规则功能 PCRF/接入网络发现与选择功 能 ANDSF;
所述蜂窝接入网接入节点包括如上述第五方面的任一种实施方式下的第 一装置;
所述 UE包括如第六方面的任一种实施方式下的第二装置;
所述 PCRF/ ANDSF 包括如上述第八方面的任一种实施方式下的第四装 置。 本发明提供的技术方案带来的有益效果是: 在 UE从蜂窝接入网接入后, 通过获取 WLAN选择信息, 该 WLAN选择信息包括优先级信息, 所述优先级 信息用于指示对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入, 根据该 WLAN选择信息为 UE选择一个 WLAN网络, 并指示 UE接入所选择 的 WLAN网络, 从而提高 UE接入网络的效率, 实现 UE的行为可控。 附图说明
为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述中所 需要使用的附图作筒单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明 的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1是本发明实施例提供的 LTE网络架构示意图;
图 2是本发明实施例提供的 2G/3G网络架构示意图;
图 3是本发明实施例 1提供的网络选择的方法流程图;
图 4是本发明实施例 2提供的网络选择的方法流程图;
图 5是本发明实施例 3提供的网络选择的方法流程图;
图 6是本发明实施例 4提供的网络选择的方法流程图; 图 7是本发明实施例 5提供的网络选择的方法流程图;
图 8是本发明实施例 5提供的 WLAN选择信息的设置示意图;
图 9是本发明实施例 5提供的 MME发送 WLAN选择信息的一种示意图; 图 10是本发明实施例 5提供的 MME/SGSN发送 WLAN选择信息的另一 种示意图;
图 11是本发明实施例 5提供的 MME/SGSN发送 WLAN选择信息的再一 种示意图;
图 12是本发明实施例 5提供的 MME/SGSN发送 WLAN选择信息的又一 种示意图;
图 13是本发明实施例 5提供的 eNB指示 UE的示意图;
图 14是本发明实施例 5提供的 PCRF触发的 IP-CAN会话修改流程示意图; 图 15是本发明实施例 5提供的 PGW/PCEF触发的 IP-CAN会话修改流程 示意图;
图 16是本发明实施例 5提供的 IP-CAN会话建立流程示意图;
图 17是本发明实施例 6提供的网络选择的方法一种流程图;
图 18是本发明实施例 6提供的 PCRF/ANDSF与 eNB的交互示意图; 图 19是本发明实施例 6提供的网络选择的方法另一种流程图;
图 20是本发明实施例 7提供的网络选择的第一装置结构图;
图 21是本发明实施例 8提供的网络选择的第二装置结构图;
图 22是本发明实施例 9提供的网络选择的第三装置结构图;
图 23是本发明实施例 10提供的网络选择的第四装置结构图;
图 24是本发明实施例 11提供的蜂窝接入网接入节点结构图;
图 25是本发明实施例 12提供的 UE结构图;
图 26是本发明实施例 13提供的 MME/SGSN结构图;
图 27是本发明实施例 14提供的 PCRF/ANDSF结构图;
图 28是本发明实施例 15提供的网络选择的系统结构图;
图 29是本发明实施例 16提供的网络选择的系统结构图;
图 30是本发明实施例 17提供的网络选择的系统结构图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发明 实施方式作进一步地详细描述。
本发明实施例涉及网络选择的方法、 装置和系统, 由网络侧为 UE在蜂窝 网络和 WLAN中选择合适的网络, 通过蜂窝接入网接入节点指导 UE接入该 网络。所述蜂窝接入网包括 LTE、 UMTS, CDMA2000或 GSM、 CDMA2000 lx 等接入技术类型的网络, 其中 LTE属于第 4代移动通信技术(4G ), UMTS, CDMA2000属于第 3代移动通信技术( 3G ), GSM、 CDMA2000 lx属于第 2 代移动通信技术(2G )。 所述蜂窝接入网接入节点包括: SRC ( Single Radio Controller, 统一无线控制器;)、 LTE中的 eNodeB ( evolved Node Base, 演进的 基站;), 3G中的 RNC( Radio Network Controller,无线网络控制器)、 NodeB( Node Base, 基站;), 2G中的 BSC ( Base Station Controller,基站控制器)、 BTS ( Base Transceiver Station, 基站收发台)等等。
参见图 1 ,为本发明实施例提供的 LTE网络架构示意图。其中, HSS( Home Subscriber Server, 归属用户服务器)上存储有 UE的签约信息, PCRF ( Policy and Charging Rules Function , 策略和计费规则功能 ) /ANDSF可以生成 WLAN 选择信息,该 WLAN选择信息包括无线接入技术类型与 WLAN的优先级信息, 并通过 SGW ( Serving Gateway, 月良务网关) /PGW ( PDN Gateway , 分组数据 网络网关)、 ΜΜΕ ( Mobility Management Entity, 移动性管理实体)等设备传 输给 eNB, eNB根据该 WLAN选择信息为 UE选择合适的网络并指示 UE接 入该网络, 从而提高了 UE接入网络的效率, 实现了 UE的行为可控。
参见图 2,为本发明实施例提供的 2G/3G网络架构示意图。其中, HSS/HLR ( Home Location Register, 归属位置寄存器) 上存储有 UE 的签约信息, PCRF/ANDSF可以生成 WLAN选择信息,该 WLAN选择信息包括无线接入技 术类型与 WLAN的优先级信息,并通过 SGW/PGW、 MME/SGSN( Serving GPRS Support Node, 服务 GPRS支持节点 )等设备传输给 NodeB或 BTS, NodeB或 BTS根据该 WLAN选择信息为 UE选择合适的网络并指示 UE接入该网络,从 而提高了 UE接入网络的效率, 实现了 UE的行为可控。
需要声明的是, 本发明中涉及的蜂窝基站 /控制器、 MME/SGSN、 PCRF/ANDSF, PGW/PCEF等表述中, 所述 "/" 表示 "或", 用该 "/" 分割的 两个设备之间是或的关系, 在实际网络应用中, 可以根据需要部署 "/"前面的 设备或者后面的设备,执行的流程是相同的,本发明实施例对此不做具体限定, 下文不再——声明。 实施例 1
参见图 3, 本实施例提供了一种网络选择的方法, 包括:
301: 在用户设备 UE从蜂窝接入网接入后, 蜂窝接入网接入节点获取无 线局域网 WLAN选择信息, 所述 WLAN选择信息包含优先级信息, 所述优先 级信息用于指示对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接 入;
302:所述蜂窝接入网接入节点根据所述优先级信息为所述 UE选择 WLAN 网络, 其中, 所述选择的 WLAN网络的接入优先级高于所述蜂窝接入网; 本实施例中, 所述选择的 WLAN 网络的接入优先级高于所述蜂窝接入网 是指, 所述 UE接入所述 WLAN网络优先于接入所述蜂窝接入网。
303:所述蜂窝接入网接入节点指示所述 UE接入所述选择的 WLAN网络。 本实施例中, WLAN选择信息可以由 MME/SGSN从 HSS/HLR发送的 UE 签约信息中获取, 或者, 也可以是 PCRF/ANDSF根据 UE的签约信息、 业务 使用情况、 位置变化信息、 账户信息或网络策略中的至少一种, 生成并发送给 MME/SGSN的。 MME/SGSN在获取到 WLAN选择信息后, 可以直接转发给 蜂窝接入网接入节点, 或者也可以根据本地策略进行修改后发给蜂窝接入网接 入节点, 如果 UE处在漫游网络, 则 MME/SGSN所依据的本地策略可以是拜 访地运营商的 WLAN与蜂窝网络选择的策略。 所述根据本地策略进行修改, 可以是调整无线接入技术类型与 WLAN的优先级顺序, 也可以是调整 WLAN 不同网络的优先级顺序, 或增加、 禁止某些 WLAN网络。
所述 WLAN选择信息中包含所选择的网络的标识信息, 如 SSID ( Service Set Identification, 业务集标识)、 SSID+HESSID ( Homogenous Extended Service Set Identifier, 同源扩展业务集标识符)、 OUI ( Organization Universal Identity 组织全球标识 )或 BSSID ( Basic Service Set Identification,基本业务集标识 ) 等等。 所述无线接入技术类型与 WLAN的优先级信息可以根据需要按照不同 的粒度来设置, 可以按照蜂窝网络与 WLAN的粒度来设置, 或者可以按照不 同制式的蜂窝网络与 WLAN的粒度来设置, 或者可以按照不同标识的 WLAN 与蜂窝网络 /蜂窝制式的粒度来设置, 本实施例对此不做具体限定。
结合上述方法, 在第一种实施方式下, 所述优先级信息包含至少两个 WLAN网络的优先级信息; 根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述至少两个 WLAN网络的优先级信息, 选择所述至少两个 WLAN 网络中优先级最高的 WLAN网络。
结合上述方法或第一种实施方式, 在第二种实施方式下, 所述 WLAN选 择信息还包含负载条件;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述优先级信息和所述负载条件为所述 UE选择 WLAN网络, 其中 所述选择的 WLAN网络满足所述负载条件。
结合上述第一种实施方式, 在第三种实施方式下, 所述 WLAN选择信息 还包含所述至少两个 WLAN网络的负载信息;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的负载信息, 选择所述至少两个 WLAN 网络中优先级最高且负载最低的
WLAN网络。
结合上述方法或第一种实施方式, 在第四种实施方式下, 所述 WLAN选 择信息还包含信号质量条件,
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述优先级信息和所述信号质量条件为所述 UE选择 WLAN网络, 其中, 所述 UE在所述选择的 WLAN网络中接收的信号满足所述信号质量条 件。
结合上述第四种实施方式, 在第五种实施方式下, 所述 WLAN选择信息 还包含所述至少两个 WLAN网络的信号质量信息;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的信号质量信息, 选择所述至少两个 WLAN 网络中优先级最高且信号质量最 好的 WLAN网给。
结合上述方法, 在第六种实施方式下, 所述 WLAN选择信息还包含位置 条件;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述优先级信息和所述位置条件为所述 UE选择 WLAN网络, 其中 所述 UE位于所述位置条件中指示的区域之内或者位于所述位置条件中指示的 区域之外。
另外, 还可以在指定的时间段内或除指定的时间段外的任意时刻, 根据所 述优先级信息, 为 UE选择优先级最高的网络。
本实施例中, 上述负载条件、 信号质量条件、 位置条件和指定时间段还可 以任意组合起来应用, 即所述 WLAN选择信息中可以包括负载条件、 信号质 量条件、 位置条件和指定时间段中的任意一种或几种。
具体地, WLAN的负载满足该负载条件, 可以具体包括: WLAN的负载 小于或大于设定的第一阈值。
具体地, UE在 WLAN中接收的信号质量满足该信号质量条件, 可以具体 包括: UE在 WLAN中接收的信号质量小于或大于设定的第二阈值。
具体地, 所述位置条件中指定的区域包括但不限于: 特定位置区 (LA ), 路由区( RA ),跟踪区 ( TA ),控制器( RNC ID, SRC ID ),基站 ( eNB, NodeB, BTS )或小区 (Cell )等。
结合上述方法或任一种实施方式, 在第七种实施方式下, 所述 WLAN选 择信息还包含服务提供商的域名称;
所述蜂窝接入网接入节点指示所述 UE接入所述选择的 WLAN网络, 包 括:
所述蜂窝接入网接入节点指示所述 UE接入所述服务提供商提供的所述选 择的 WLAN网络。
其中, 所述服务提供商的域名称(realm name )可以为列表的形式, 包括 一个或多个域名称, 具体地, 该域名称可以包含 PLMN ( Public Land Mobile Network, 公共陆地移动网络) ID, 进一步地还可以设置各个服务提供商的优 先级, 由蜂窝接入网接入节点根据自己掌握的 WLAN信息 ( WLAN网络支持 连接到服务提供商的能力等)为 UE选择 UE接入的 WLAN所采用的服务提供 商发送给 UE, 可以是一个或多个。 或者, 也可以是由核心网在发给蜂窝接入 网接入节点的 WLAN选择信息中包含 WLAN网络的标识时, 同时指明 UE接 入该 WLAN网络时使用的服务提供商的域名称。
结合上述方法或上述任一种实施方式, 在第八种实施方式下, 所述蜂窝接 入网接入节点获取无线局域网 WLAN选择信息, 包括:
所述蜂窝接入网接入节点接收移动性管理实体 MME或服务通用分组无线 服务技术支持节点 SGSN发送的所述 WLAN选择信息; 或者, 所述蜂窝接入网接入节点在与策略和计费规则功能 PCRF或接入网络发现 与选择功能 ANDSF之间建立连接后, 接收所述 PCRF或 ANDSF发送的所述 WLAN选择信息。
本实施例中, 蜂窝接入网接入节点可以通过与 UE的空口交互消息如 RB ( Radio Bearer, 无线 载) Establishment建立消息或 RRC ( Radio Resource Control,无线资源控制 ) Connection Reconfiguration连接重配置消息来指示 UE 接入网络,具体地,可以将选择的网络标识和 /或服务提供商的域名称携带在上 述消息中。
结合上述第一方法或上述任一种实施方式, 在第九种实施方式下, 所述优 先级信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或,接入所 述 WLAN的接入技术类型的优先级。
例如, 可以仅给出接入 WLAN的接入技术类型的优先级为最高, 则表明 接入该 WLAN的接入技术类型优于其它任何网络的任何接入技术类型。 或者, 也可以同时给出接入蜂窝接入网的接入技术类型的优先级和接入 WLAN的接 入技术类型的优先级, 且后者的优先级高于前者的优先级等等。
本实施例提供的上述方法, 在 UE从蜂窝接入网接入后, 通过获取 WLAN 选择信息, 该 WLAN选择信息包括优先级信息, 所述优先级信息用于指示对 于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入, 根据该 WLAN 选择信息为 UE选择一个 WLAN网络,并指示 UE接入所选择的 WLAN网络, 从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE精确的指导了网 络的接入, 可以自动完成, 不仅 UE节省了电量, 而且也提高了 UE的效率和 使用者的体验。 另外, 还可以使 UE在 WLAN中接入和使用业务, 有效的提 高了 UE接入 WLAN的成功率和 WLAN网络的使用率, 使 WLAN网络能够 有效的为蜂窝网络分流数据流量压力, 提高了整网吞吐量。 实施例 2
参见图 4, 本实施例提供了一种网络选择的方法, 包括:
401 : 接收蜂窝接入网接入节点发送的指示, 所述指示中包括所述蜂窝接 入网接入节点根据无线局域网 WLAN选择信息所选择的 WLAN网络的信息; 402: 根据该指示接入该 WLAN网络。
其中, 所述 WLAN选择信息包括优先级信息, 所述优先级信息用于指示 所述 UE采用 WLAN接入优先于采用蜂窝接入网接入。
结合上述方法, 在第一种实施方式下, 所述指示中还包括: 服务提供商的 域名称;
根据所述指示接入所述 WLAN网络, 包括:
根据所述指示中的所述 WLAN网络的信息和所述域名称, 接入所述服务 提供商提供的所述 WLAN。
其中, 所述服务提供商的域名称可以为列表的形式, 包括一个或多个域名 称, 具体地, 该域名称可以包含 PLMN ( Public Land Mobile Network, 公共陆 地移动网络) ID。 进一步地网络侧还可以设置各个服务提供商的优先级, 由蜂 窝接入网接入节点根据自己掌握的 WLAN信息 (WLAN网络支持连接到服务 提供商的能力等 ) 为 UE选择 UE接入的 WLAN所采用的服务提供商发送给 UE, 可以是一个或多个。 或者, 也可以是由核心网在发给蜂窝接入网接入节 点的 WLAN选择信息中包含 WLAN网络的标识时,同时指明 UE接入该 WLAN 网络时使用的服务提供商的域名称。 UE在收到该域名称后, 可以根据该域名 称精确地接入相应的服务提供商提供的该 WLAN。
本实施例中, UE在接入网络侧为其选择的 WLAN网络时, 可以使用该域 名称生成 NAI( Network Access Identifier,网络接入标识符),用该 NAI在 WLAN 网络鉴权。 如果蜂窝接入网接入节点发来的服务提供商域名称有多个, 则 UE 根据自身存储的服务提供商域名称和优先级,选出该多个服务提供商域名称中 优先级最高的, 生成 NAI并用该 NAI在 WLAN网络鉴权。
结合上述第一方法或第一种实施方式, 在第二种实施方式下, 所述优先级 信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
本实施例提供的上述方法可以由 UE来执行。
本实施例提供的上述方法, 通过接收蜂窝接入网接入节点发送的指示, 该 指示中包括所述蜂窝接入网接入节点根据无线局域网 WLAN选择信息所选择 的 WLAN网络的信息, 根据该指示接入该 WLAN网络, 从而提高 UE接入网 络的效率, 实现 UE的行为可控, 为 UE精确的指导了网络的接入, 可以自动 完成, 不仅 UE节省了电量, 而且也提高了 UE的效率和使用者的体验。 另夕卜, 还可以使 UE在 WLAN中接入和使用业务, 有效的提高了 UE接入 WLAN的 成功率和 WLAN网络的使用率,使 WLAN网络能够有效的为蜂窝网络分流数 据流量压力, 提高了整网吞吐量。 实施例 3
参见图 5, 本实施例提供了一种网络选择的方法, 包括:
501: 移动管理网元获取无线局域网 WLAN选择信息, 所述 WLAN选择 信息包括优先级信息,所述优先级信息用于指示对于用户设备 UE采用 WLAN 接入优先于采用所述蜂窝接入网接入;
502: 所述移动管理网元将所述 WLAN选择信息发送给蜂窝接入网接入节 点, 所述 WLAN选择信息用于所述蜂窝接入网接入节点为所述 UE选择一个 WLAN网络并指示所述 UE接入所选择的 WLAN网络。
本实施例中, 所述移动管理网元是指移动性管理实体 MME/服务通用分组 无线服务技术支持节点 SGSN。
结合上述方法, 在第一种实施方式下, 移动管理网元获取 WLAN选择信 息, 包括:
该 MME/SGSN接收归属用户服务器 HSS发送的该 UE的签约信息, 从该 签约信息中获取 WLAN选择信息; 或者,
该 MME/SGSN接收策略和计费规则功能 PCRF/接入网络发现与选择功能 ANDSF发送的 WLAN选择信息; 或者,
该 MME/SGSN在该 UE发生切换时或移动到新的位置后接收老的 ( old ) MME/SGSN发送的 WLAN选择信息。 所述老的 MME/SGSN是指 UE切换前 对 UE进行移动性管理的 MME/SGSN。
本实施例中, WLAN选择信息可以由 MME/SGSN从 HSS/HLR发送的 UE 签约信息中获取; 或者, 也可以是 PCRF/ANDSF根据 UE的签约信息、 业务 使用情况、 位置变化信息、 账户信息或网络策略中的至少一种, 生成并发送给 MME/SGSN的; 或者, 也可以在 UE发生切换时或移动到新的位置后从老的 MME/SGSN获取的。 MME/SGSN在获取到 WLAN选择信息后, 可以直接转 发给蜂窝接入网接入节点, 或者也可以根据本地策略进行修改后发给蜂窝接入 网接入节点, 如果 UE处在漫游网络, 则 MME/SGSN所依据的本地策略可以 是拜访地运营商的 WLAN与蜂窝网络选择的策略。 所述根据本地策略进行修 改, 可以是调整无线接入技术类型与 WLAN 的优先级顺序, 也可以是调整 WLAN不同网络的优先级顺序, 或增加、 禁止某些 WLAN网络。 结合上述方法, 在第二种实施方式下, 移动管理网元将该 WLAN选择信 息发送给蜂窝接入网接入节点, 包括:
该 MME在该 UE从空闲态转为连接态时,通过初始上下文建立请求 Initial Context Setup Request消息将该 WLAN选择信息发送给蜂窝基站; 或者,
该 SGSN通过无线接入 载分配请求 RAB Assignment Request消息将该 WLAN选择信息发送给蜂窝控制器 RNC/SRC; 或者,
该 MME/SGSN通过 7?载修改请求消息,将该 WLAN选择信息发送给该蜂 窝接入网接入节点; 或者,
该 MME/SGSN通过下行非接入层 NAS传输消息将该 WLAN选择信息发 送给该蜂窝接入网接入节点; 或者,
该 MME/SGSN通过 UE上下文修改请求消息,将该 WLAN选择信息发送 给该蜂窝接入网接入节点。
结合上述方法, 在第三种实施方式下, 移动管理网元获取 WLAN选择信 息之后, 还包括:
该 MME/SGSN根据本地的策略对该 WLAN选择信息进行修改;
相应地,该 MME/SGSN将该 WLAN选择信息发送给蜂窝接入网接入节点, 包括:
该 MME/SGSN将修改后的 WLAN选择信息发送给蜂窝接入网接入节点。 结合上述方法、 第一种至第三种实施方式中的任一种, 在第四种实施方式 下, 所述优先级信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
本实施例提供的上述方法, 通过移动管理网元获取 WLAN选择信息, 该 WLAN选择信息包括优先级信息, 所述优先级信息用于指示对于用户设备 UE 采用 WLAN接入优先于采用所述蜂窝接入网接入,将该 WLAN选择信息发送 给蜂窝接入网接入节点, 以使该蜂窝接入网接入节点为 UE选择一个 WLAN 网络并指示该 UE接入所选择的 WLAN网络, 从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE精确的指导了网络的接入, 可以自动完成, 不仅 UE节省了电量, 而且也提高了 UE的效率和使用者的体验。 另外, 还可以使 UE在 WLAN中接入和使用业务, 有效的提高了 UE接入 WLAN的成功率和 WLAN网络的使用率, 使 WLAN网络能够有效的为蜂窝网络分流数据流量压 力, 提高了整网吞吐量。 实施例 4
参见图 6, 本实施例提供了一种网络选择的方法, 包括:
601:策略和计费规则功能 PCRF/接入网络发现与选择功能 ANDSF生成无 线局域网 WLAN选择信息, 所述 WLAN选择信息包含优先级信息, 所述优先 级信息用于指示对于用户设备 UE采用 WLAN接入优先于采用所述蜂窝接入 网接入;
602: 所述 PCRF/ANDSF将所述 WLAN选择信息发送给蜂窝接入网接入 节点, 所述 WLAN选择信息用于所述蜂窝接入网接入节点为所述 UE选择一 个 WLAN网络并指示所述 UE接入所选择的 WLAN网络。
结合上述方法, 在第一种实施方式下, 该 PCRF/ANDSF将该 WLAN选择 信息发送给蜂窝接入网接入节点, 包括:
该 PCRF/ANDSF与蜂窝接入网接入节点之间建立连接, 通过已建立的连 接将该 WLAN选择信息发送给该蜂窝接入网接入节点; 或者,
该 PCRF/ANDSF将所述 WLAN选择信息发送给分组数据网络网关 PGW, 所述 PGW将所述 WLAN选择信息发送给服务网关 SGW, 所述 SGW将所述 WLAN选择信息发送给移动性管理实体 MME/服务通用分组无线服务技术支 持节点 SGSN,所述 MME/SGSN将所述 WLAN选择信息发送给所述蜂窝接入 网接入节点; 或者,
该 PCRF/ANDSF将所述 WLAN选择信息发送给网关通用分组无线业务支 持节点 GGSN, 所述 GGSN将所述 WLAN选择信息发送给服务通用分组无线 业务支持节点 SGSN, 所述 SGSN将所述 WLAN选择信息发送给所述蜂窝接 入网接入节点。
结合上述第一种实施方式, 在第二种实施方式下, 该 PCRF/ANDSF与蜂 窝接入网接入节点之间建立连接, 包括:
该 PCRF/ANDSF在该 UE的网际协议连通性接入网络 IP-CAN会话建立 后, 向该蜂窝接入网接入节点发送连接建立消息, 与该蜂窝接入网接入节点建 立连接; 或者,
该 PCRF/ANDSF接收该蜂窝接入网接入节点在该 UE从空闲态转为连接 态后发送的连接建立消息, 与该蜂窝接入网接入节点建立连接。
结合上述方法, 在第三种实施方式下, PCRF/ANDSF生成 WLAN选择信 息, 包括:
该 PCRF/ANDSF根据该 UE的签约信息、 业务使用情况、 位置变化信息、 账户信息或网络策略中的至少一种, 生成 WLAN选择信息。
其中, 所述 UE的签约信息包括但不限于 UE的流量套餐、 时长套餐等信 息。 UE的位置变化信息包括但不限于: UE是否位于特定位置区、 路由区、 跟 踪区、 小区等等。 所述账户信息包括但不限于: 用户的账户的余额信息等。 所 述网络策略包括但不限于: 网络负载均衡策略等。 例如, 初始情况下 UE 的 WLAN选择信息中蜂窝网络优先级高于 WLAN的优先级, 当 UE的蜂窝网络 流量套餐或时长套餐在该套餐周期内已经用尽或即将用尽, UE 的蜂窝网络使 用费用将会上升或蜂窝网络速率将会下降, PCRF从计费系统获得 UE的套餐 使用状态, 触发 WLAN选择信息调整为 WLAN的优先级高于蜂窝网络的优先 级。
结合上述方法、 第一种至第三种实施方式中的任一种, 在第四种实施方式 下, 所述优先级信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
本实施例提供的上述方法,通过 PCRF/ANDSF生成 WLAN选择信息, 该 WLAN选择信息包括优先级信息,所述优先级信息用于指示对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入, 将该 WLAN选择信息发送给蜂 窝接入网接入节点, 以使该蜂窝接入网接入节点为 UE选择一个 WLAN网络 并指示该 UE接入所选择的 WLAN网络,从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE精确的指导了网络的接入, 可以自动完成, 不仅 UE 节省了电量, 而且也提高了 UE的效率和使用者的体验。 另外, 还可以使 UE 在 WLAN中接入和使用业务,有效的提高了 UE接入 WLAN的成功率和 WLAN 网络的使用率, 使 WLAN 网络能够有效的为蜂窝网络分流数据流量压力, 提 高了整网吞吐量。 实施例 5
参见图 7, 本实施例提供了一种网络选择的方法, 包括:
701:在用户设备 UE从蜂窝接入网接入后, MME/SGSN获取 WLAN选择 信息, 所述 WLAN选择信息包含优先级信息, 所述优先级信息用于指示对于 所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入; 其中, MME/SGSN获取 WLAN选择信息, 包括:
MME/SGSN接收归属用户服务器 HSS发送的所述 UE的签约信息, 从所 述签约信息中获取 WLAN选择信息; 或者,
MME/SGSN接收策略和计费规则功能 PCRF/接入网络发现与选择功能 ANDSF发送的 WLAN选择信息; 或者,
MME/SGSN 在所述 UE 发生切换时或移动到新的位置后接收老的 MME/SGSN发送的 WLAN选择信息。
本实施例中, 所述 WLAN选择信息中包含所选择的网络的标识信息, 如 SSID、 SSID+HESSID、 OUI或 BSSID等等。 所述无线接入技术类型与 WLAN 的优先级信息可以根据需要按照不同的粒度来设置, 可以按照蜂窝网络与 WLAN的粒度来设置, 或者可以按照不同制式的蜂窝网络与 WLAN的粒度来 设置, 或者可以按照不同标识的 WLAN与蜂窝网络 /蜂窝制式的粒度来设置, 本实施例对此不做具体限定。
例如, 参见图 8, 为 WLAN选择信息的一种设置方式。 其中, 优先级的设 置可以为 WLAN >蜂窝小区 Celluar, 或者 LTE > WLAN > UMTS或 GSM, 或 者 LTE>UMTS > WLAN > GSM, 或者 LTE > SSID ( Service Set Identification, 业务集标识) S1,S2,S3 > UMTS>GSM 等等。 在同一个优先级的级别中可以存 在多个网络, 表明该多个网络具有相同的优先级。 如 WLAN S1,S2,S3这三个 不同的 WLAN可以有 S1>S2>S3的优先级,也可以具有相同的优先级。 图中负 载阈值 load threshold或 SS ( Signal Strength, 信号强度) threshold阈值均可以 根据需要设置, 此处不做过多说明。 其中, 所述 SSID还可以由以下任一种标 识来替换: SSID+HESSID ( Homogenous Extended Service Set Identifier, 同源 扩展业务集标识符), OUI ( Organization Universal Identity 组织全球标识 ) , BSSID ( Basic Service Set Identification, 基本业务集标识)等。
702: MME/SGSN将所述 WLAN选择信息发送给蜂窝接入网接入节点; 本步骤可以具体包括以下五种中的任一种:
第一种, MME在所述 UE从空闲态转为连接态时, 通过初始上下文建立 请求消息将所述 WLAN选择信息发送给蜂窝基站。 例如, 参见图 9, 为 MME 在 UE从空闲态转为连接态时, 通过 Initial Context Setup Request消息(初始上 下文建立请求)将所述 WLAN选择信息发送给 eNB的示意图。 其中, 如果网 络中还部署了 SRC, 则根据该 WLAN选择信息选择网络的操作可以由 eNB或 SRC来执行, 选好网络后再由 eNB对 UE进行指示。
第二种, SGSN通过无线接入承载分配请求消息将所述 WLAN选择信息发 送给蜂窝控制器。
第三种, MME/SGSN通过承载修改请求消息, 将所述 WLAN选择信息发 送给所述蜂窝接入网接入节点。 例如, 参见图 10, 为 MME/SGSN通过 Bearer Modify Request (承载修改请求) 消息, 将所述 WLAN选择信息发送给 eNB 的示意图。
第四种, MME/SGSN通过下行非接入层 NAS传输消息将所述 WLAN选 择信息发送给所述蜂窝接入网接入节点。 例如, 参见图 11 , 为 MME/SGSN通 过下行 Downlink NAS( Non- Access-Stratum,非接入层)传输消息将所述 WLAN 选择信息发送给 eNB的示意图。
第五种, MME/SGSN通过 UE上下文修改请求消息, 将所述 WLAN选择 信息发送给所述蜂窝接入网接入节点。 例如, 参见图 12, 为 MME/SGSN通过 UE Context Modification Request (上下文修改请求 )消息, 将所述 WLAN选择 信息发送给 eNB的示意图。
本实施例中, MME/SGSN 获取 WLAN 选择信息之后, 还可以包括: MME/SGSN 根据本地的策略对所述 WLAN 选择信息进行修改; 相应地, MME/SGSN 将所述 WLAN 选择信息发送给蜂窝接入网接入节点, 包括: MME/SGSN将修改后的 WLAN选择信息发送给蜂窝接入网接入节点。
703: 蜂窝接入网接入节点接收 MME/SGSN发送的 WLAN选择信息;
704: 蜂窝接入网接入节点根据所述 WLAN选择信息中的优先级信息, 为 UE选择优先级最高的网络;
在一种场景下, 该 WLAN选择信息还包括负载条件, 步骤 704可以包括: 根据所述优先级信息和负载条件为所述 UE选择 WLAN网络, 其中所述 选择的 WLAN网络满足所述负载条件。
进一步地, 所述 WLAN选择信息还包括所述至少两个 WLAN网络的负载 信息; 步骤 704可以包括:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的负载信息, 选择所述至少两个 WLAN 网络中优先级最高且负载最低的 WLAN网络。
在另一种场景下, 该 WLAN选择信息还包括信号质量条件, 步骤 704可 以包括:
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述优先级信息和所述信号质量条件为所述 UE选择 WLAN网络, 其中, 所述 UE在所述选择的 WLAN网络中接收的信号满足所述信号质量条 件。
所述信号质量可以用多种参数来表征, 如用信号强度、 误码率等等, 本实 施例对此不做具体限定。通常,信号强度越大, 信号质量越好,信号强度越小, 信号质量越差; 误码率越高, 信号质量越差, 误码率越低, 信号质量越好。
进一步地, 所述 WLAN选择信息还包含所述至少两个 WLAN网络的信号 质量信息; 步骤 704可以包括:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的信号质量信息, 选择所述至少两个 WLAN 网络中优先级最高且信号质量最 好的 WLAN网给。
在又一种场景下, 该 WLAN选择信息还包括位置条件, 步骤 704包括: 根据所述优先级信息和所述位置条件为所述 UE选择 WLAN网络, 其中 所述 UE位于所述位置条件中指示的区域之内或者位于所述位置条件中指示的 区域之外。
另外, 还可以在指定的时间段内或除指定的时间段外的任意时刻, 根据所 述优先级信息, 为 UE选择优先级最高的 WLAN网络。
本实施例中, 上述负载条件、 信号质量条件、 位置条件和指定时间段还可 以任意组合起来应用, 即所述 WLAN选择信息中可以包括负载条件、 信号质 量条件、 位置条件和指定时间段中的任意一种或几种。
具体地, WLAN的负载满足该负载条件, 可以具体包括: WLAN的负载 小于或大于设定的第一阈值。
具体地, UE在 WLAN中的信号质量满足该信号质量条件,可以具体包括: UE在 WLAN中的信号质量小于或大于设定的第二阈值。
具体地, 所述位置条件中指示的区域包括但不限于: 特定位置区 (LA ), 路由区( RA ),跟踪区 ( TA ),控制器( RNC ID, SRC ID ),基站 ( eNB, NodeB, BTS )或小区 (Cell )等。
705: 蜂窝接入网接入节点发送指示给所述 UE, 指示所述 UE接入所选择 的网络; 蜂窝接入网接入节点可以在与 UE的空口交互消息, 如 RB Establishment 无线 7 载建立消息或 RRC Connection Reconfiguration无线资源控制连接重配 置消息中, 将 WLAN接入信息发送给 UE , 该 WLAN接入信息中可以包括: 选择的 WLAN网络标识和 /或服务提供商的域名称。 例如, 参见图 13, 为 eNB 通过 RRC Connection Reconfiguration (连接重配置 ) 消息指示 UE的示意图。 其中, WLAN网络标识可以是 SSID , SSID+HESSID , OUI , BSSID等中的一 个或多个的组合。
本实施例中, 进一步地, 所述 WLAN选择信息还包括: 服务提供商的域 名称;
相应地, 步骤 704 包括: 指示所述 UE接入所述服务提供商提供的所述 WLANo
706: UE接收蜂窝接入网接入节点发送的指示, 所述指示中包括蜂窝接入 网接入节点根据无线局域网 WLAN选择信息所选择的 WLAN 网络的接入信 息;
707: UE根据所述 WLAN接入信息接入所述 WLAN网络;
其中, 当所述 WLAN接入信息中还包括: 服务提供商的域名称时, 步骤 706可以包括:
根据所述 WLAN接入信息中的所述网络的信息和所述域名称, 接入所述 服务提供商提供的所述 WLAN。
以上都是利用现有标准的接口消息和流程 ( eNB与 SRC之间)在 PCRF, MME/SGSN, 蜂窝接入网接入节点之间传递 WLAN选择信息, 并由蜂窝接入 网接入节点发送指示指导 UE接入网络。 当然, 在其它的实施方式下, 本发明 也可以采用新增的消息来传递 WLAN选择信息, 本发明对此不做具体限定。
另外, 值得一提的是, 如图 9的矩形框 (A)、 图 10的矩形框 (A)和 (B)以及 图 11 的矩形框 (A)和 (B)所示, PCRF/ANDSF与 PGW/PCEF之间的 IP-CAN Session Modification会话修改流程中, 会进行 WLAN选择信息的传输。 所述 IP-CAN Session Modification会话修改流程可以如图 14和图 15所示。 其中, 图 14为 PCRF/ANDSF发起的 IP-CAN会话修改流程, 因此, PCRF/ANDSF可 以在策略和计费规则提供消息中携带 WLAN选择信息给 PGW/PCEF。图 15为 PGW/PCEF发起的 IP-CAN会话修改流程,因此, PCRF/ANDSF可以在 IP-CAN 会话修改确认消息中携带 WLAN选择信息给 PGW/PCEF。 当然, 在 IP-CAN 会话的建立流程中, 也可以传输 WLAN选择信息, 如图 16所示, 在 IP-CAN 会话建立的指示消息以及 IP-CAN会话建立的确认消息中可以携带上述 WLAN 选择信息。
本实施例提供的上述方法, 通过 MME/SGSN获取 WLAN选择信息, 该 WLAN 选择信息包括优先级信息, 所述优先级信息用于指示所述 UE 采用 WLAN接入优先于采用蜂窝接入网接入, 将该 WLAN选择信息发送给蜂窝接 入网接入节点, 该蜂窝接入网接入节点根据该 WLAN选择信息为 UE选择一 个 WLAN网络并指示该 UE接入所选择的 WLAN网络, 提高了 UE接入网络 的效率, 实现 UE的行为可控, 为 UE精确的指导了网络的接入, 可以自动完 成, 不仅 UE节省了电量, 而且也提高了 UE的效率和使用者的体验。 另外, 还可以使 UE在 WLAN中接入和使用业务, 有效的提高了 UE接入 WLAN的 成功率和 WLAN网络的使用率,使 WLAN网络能够有效的为蜂窝网络分流数 据流量压力, 提高了整网吞吐量。 实施例 6
本实施例提供了一种网络选择的方法, 在一种实施方式下, 参见图 17, 该 方法包括:
1701 : PCRF/ ANDSF生成无线局域网 WLAN选择信息, 所述 WLAN选 择信息包含优先级信息, 所述优先级信息用于指示对于所述 UE采用 WLAN 接入优先于采用所述蜂窝接入网接入;
1702: PCRF/ANDSF与蜂窝接入网接入节点之间建立连接;
具体地, 本步骤可以包括:
第一种方式: PCRF/ANDSF在所述 UE的网际协议连通性接入网络 IP-CAN 会话建立后, 向所述蜂窝接入网接入节点发送连接建立消息, 与所述蜂窝接入 网接入节点建立连接; 或者,
第二种方式: PCRF/ANDSF接收所述蜂窝接入网接入节点在所述 UE从空 闲态转为连接态后发送的连接建立消息, 与所述蜂窝接入网接入节点建立连 接。
上述两种方式中,都需要发送端寻址和发现接收端。第一种方式中, PCRF 在 Gx接口从 PCEF获取到 UE的位置信息, 然后用 UE ID和 UE位置信息组 成路由标识, 向接收端发送消息。 路由标识中的 UE ID可以是 UE的永久标识 ^口 IMSI ( International Mobile Subscriberldentification Number, 国际移动用户只 别码)等, 也可以是 MME或蜂窝接入网的基站或控制器等网元为 UE生成的 临时标识。其中,所述临时标识在生成后会发送给 PCEF,由 PCEF发送给 PCRF, PCRF会将该临时标识与 UE的永久标识 IMSI进行绑定。如果该临时标识是由 MME生成, 则还需要将该临时标识发送给蜂窝接入网。所述路由标识中的 UE 的位置信息, 可以是 PCEF上报给 PCRF的 UE的小区标识, 位置区标识, 路 由区标识或跟踪区标识, 也可以是 PCRF根据 PCEF上报的 UE位置信息, 映 射出的 RNC, BSC, SRC等控制器标识等等。
第二种方式中, 蜂窝接入网的基站或控制器等网元用 UE ID组成路由标 识,向接收端发送消息。该路由标识中的 UE ID可以是 UE的永久标识如 IMSI, 也可以是 MME或蜂窝接入网的基站或控制器等网元为 UE生成的临时标识。 其中, 所述临时标识在生成后会发送给 PCEF, 由 PCEF发送给 PCRF, PCRF 会将该临时标识与 UE的永久标识 IMSI进行绑定。如果该临时标识是由 MME 生成, 则还需要将该临时标识发送给蜂窝接入网。 在连接建立后, 蜂窝接入网 接入节点可以将 UE所处的小区标识,位置区标识,路由区标识或跟踪区标识, 或者 RNC, BSC, SRC等控制器标识发送给 PCRF。
需要注意的是, 采用临时标识发送连接建立消息的路由网络中, UE 的永 久标识、 临时标识、 以及永久标识和临时标识的组合, 都能够被路由到正确的 接收端。 UE 的临时标识进行更新, 则消息的路由网络的路由表也需要进行更 新。 临时标识的组成可以是生成该临时标识的设备全球唯一标识 +时间 +随机 数, 该随机数也可以替换为长时间不重复使用的字符等, 本实施例对此不做具 体限定。
1703: PCRF/ANDSF通过已建立的连接将所述 WLAN选择信息发送给所 述蜂窝接入网接入节点;
参见图 18, 为 PCRF/ANDSF与蜂窝接入网接入节点之间建立连接, 并通 过已建立的连接将所述 WLAN选择信息发送给 eNB的示意图。
1704: 蜂窝接入网接入节点接收到该 WLAN选择信息后, 根据该 WLAN 选择信息为 UE选择一个网络并指示所述 UE接入所选择的网络。
在另一种实施方式下, 参见图 19, 该方法可以包括:
1901: PCRF/ ANDSF生成无线局域网 WLAN选择信息, 所述 WLAN选 择信息包含优先级信息, 所述优先级信息用于指示对于所述 UE采用 WLAN 接入优先于采用所述蜂窝接入网接入;
1902: PCRF/ANDSF将所述 WLAN选择信息发送给 PGW, PGW将该 WLAN选择信息发送给 SGW, SGW将该 WLAN选择信息发送给 MME/SGSN; 或者, PCRF/ANDSF将所述 WLAN选择信息发送给 GGSN, GGSN将该 WLAN选择信息发送给 SGSN, SGSN将该 WLAN选择信息发送给蜂窝接入 网接入节点。
本实施例中, PCRF/ANDSF可以通过 Gx接口的 Policy and Charging Rules Provision 策略和计费规则提供消息将 WLAN 选择信息发送给 PGW ( PDN Gateway,分组数据网给网关)/PCEF( Policy and Charging Enforcement Function, 策略和计费执行功能)。当 PGW/PCEF向 PCRF/ANDSF上报 UE的位置发生改 变时, PCRF/ANDSF可以在发送给 PGW/PCEF的 IP CAN Session Modification 响应消息中携带 WLAN选择信息,如图 10或图 11所示。 PGW/PCEF在 Update Bearer Request消息中将 WLAN选择信息发给 SGW ( Serving Gateway , 服务 网关), SGW将 WLAN选择信息发给 MME/SGSN。
在 UMTS网络中, SGSN可以在 RAB assignment Request消息中将 WLAN 选择信息发送给 RNC/SRC。 当 UMTS接入 EPC ( Evolved Packet Core, 演进分 组核心网 ) 时, SGSN从 SGW收到 WLAN选择信息, 当 UMTS接入 GPRS 核心网时, GGSN作为 PCEF,则 PCRF/ANDSF将 WLAN选择信息发给 GGSN, GGSN再将 WLAN选择信息发给 SGSN。
1903: MME/SGSN收到该 WLAN选择信息后, 将该 WLAN选择信息发 送给蜂窝接入网接入节点;
1904: 蜂窝接入网接入节点为 UE选择一个网络并指示所述 UE接入所选 择的网络。
上述任一种实施方式中, PCRF/ANDSF生成 WLAN选择信息,可以包括: PCRF/ANDSF根据所述 UE的签约信息、 业务使用情况、 位置变化信息、 账户信息或网络策略中的至少一种, 生成 WLAN选择信息。
本实施例提供的上述方法,通过 PCRF/ANDSF生成 WLAN选择信息, 该 WLAN 选择信息包括优先级信息, 所述优先级信息用于指示所述 UE 采用 WLAN接入优先于采用蜂窝接入网接入, 将该 WLAN选择信息发送给蜂窝接 入网接入节点, 以使该蜂窝接入网接入节点为 UE选择一个 WLAN网络并指 示该 UE接入所选择的 WLAN网络, 从而提高 UE接入网络的效率, 实现 UE 的行为可控, 为 UE精确的指导了网络的接入, 可以自动完成, 不仅 UE节省 了电量, 而且也提高了 UE 的效率和使用者的体验。 另外, 还可以使 UE在 WLAN中接入和使用业务, 有效的提高了 UE接入 WLAN的成功率和 WLAN 网络的使用率, 使 WLAN 网络能够有效的为蜂窝网络分流数据流量压力, 提 高了整网吞吐量。 实施例 7
参见图 20, 本实施例提供了一种网络选择的第一装置, 包括:
获取模块 2001 , 用于在用户设备 UE从蜂窝接入网接入后, 获取无线局域 网 WLAN选择信息, 所述 WLAN选择信息包含优先级信息, 所述优先级信息 用于指示对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入;
选择模块 2002, 用于根据所述优先级信息为所述 UE选择 WLAN网络, 其中, 所述选择的 WLAN网络的接入优先级高于所述蜂窝接入网;
发送模块 2003, 用于指示所述 UE接入所述选择的 WLAN网络。
本实施例中, WLAN选择信息可以由 MME/SGSN从 HSS/HLR发送的 UE 签约信息中获取, 或者, 也可以是 PCRF/ANDSF根据 UE的签约信息、 业务 使用情况、 位置变化信息、 账户信息或网络策略中的至少一种, 生成并发送给 MME/SGSN的。 MME/SGSN在获取到 WLAN选择信息后, 可以直接转发给 蜂窝接入网接入节点, 或者也可以根据本地策略进行修改后发给蜂窝接入网接 入节点, 如果 UE处在漫游网络, 则 MME/SGSN所依据的本地策略可以是拜 访地运营商的 WLAN与蜂窝网络选择的策略。 所述根据本地策略进行修改, 可以是调整无线接入技术类型与 WLAN的优先级顺序, 也可以是调整 WLAN 不同网络的优先级顺序, 或增加、 禁止某些 WLAN网络。
所述 WLAN选择信息中包含所选择的网络的标识信息, 如 SSID ( Service Set Identification, 业务集标识)、 SSID+HESSID ( Homogenous Extended Service Set Identifier, 同源扩展业务集标识符)、 OUI ( Organization Universal Identity 组织全球标识 )或 BSSID ( Basic Service Set Identification,基本业务集标识 ) 等等。 所述优先级信息可以根据需要按照不同的粒度来设置, 可以按照蜂窝网 络与 WLAN的粒度来设置, 或者可以按照蜂窝网络与 WLAN的接入技术类型 的粒度来设置, 进一步地, WLAN还可以细分为不同标识的 WLAN等等, 本 实施例对此不做具体限定。 结合上述第一装置, 在第一种实施方式下, 所述优先级信息包含至少两个
WLAN网络的优先级信息; 选择模块用于:
根据所述至少两个 WLAN网络的优先级信息, 选择所述至少两个 WLAN 网络中优先级最高的 WLAN网络。
结合上述第一装置或第一种实施方式,在第二种实施方式下,所述 WLAN 选择信息还包括负载条件, 所述选择模块用于:
根据所述优先级信息和所述负载条件为所述 UE选择 WLAN网络, 其中 所述选择的 WLAN网络满足所述负载条件。
结合上述第一种实施方式, 在第三种实施方式下, 所述 WLAN选择信息 还包含所述至少两个 WLAN网络的负载信息; 所述选择模块用于:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的负载信息, 选择所述至少两个 WLAN 网络中优先级最高且负载最低的 WLAN网络。
结合上述第一装置或第一种实施方式,在第四种实施方式下,所述 WLAN 选择信息还包括信号质量条件, 所述选择模块用于:
根据所述优先级信息和所述信号质量条件为所述 UE选择 WLAN网络, 其中, 所述 UE在所述选择的 WLAN网络中接收的信号满足所述信号质量条 件。
结合上述第四种实施方式, 在第五种实施方式下, 所述 WLAN选择信息 还包含所述至少两个 WLAN网络的信号质量信息;
所述选择模块用于:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的信号质量信息, 选择所述至少两个 WLAN 网络中优先级最高且信号质量最 好的 WLAN网给。
结合上述第一装置, 在第六种实施方式下, 所述 WLAN选择信息还包括 位置条件, 所述选择模块用于:
根据所述优先级信息和所述位置条件为所述 UE选择 WLAN网络, 其中 所述 UE位于所述位置条件中指示的区域之内或者位于所述位置条件中指示的 区域之外。
另外, 还可以在指定的时间段内或除指定的时间段外的任意时刻, 根据所 述无线蜂窝接入技术类型与 WLAN的优先级信息, 为 UE选择优先级最高的 网络。
本实施例中, 上述负载条件、 信号质量条件、 位置条件和指定时间段还可 以任意组合起来应用, 即所述 WLAN选择信息中可以包括负载条件、 信号质 量条件、 位置条件和指定时间段中的任意一种或几种。
具体地, WLAN的负载满足该负载条件, 可以具体包括: WLAN的负载 小于或大于设定的第一阈值。
具体地, UE在 WLAN中的信号质量满足该信号质量条件,可以具体包括: UE在 WLAN中接收的信号质量小于或大于设定的第二阈值。
具体地, 所述位置条件中指示的区域包括但不限于: 特定位置区 (LA ), 路由区( RA ),跟踪区 ( TA ),控制器( RNC ID, SRC ID ),基站 ( eNB, NodeB, BTS )或小区 (Cell )等。
结合上述第一装置, 在第七种实施方式下, 所述 WLAN选择信息还包含 服务提供商的域名称;
所述发送模块用于:
指示所述 UE接入所述服务提供商提供的所述 WLAN。
其中, 所述服务提供商的域名称(realm name )可以为列表的形式, 包括 一个或多个域名称, 具体地, 该域名称可以包含 PLMN ( Public Land Mobile Network, 公共陆地移动网络) ID, 进一步地还可以设置各个服务提供商的优 先级, 由蜂窝接入网接入节点根据自己掌握的 WLAN信息 ( WLAN网络支持 连接到服务提供商的能力等)为 UE选择 UE接入的 WLAN所采用的服务提供 商发送给 UE, 可以是一个或多个。 或者, 也可以是由核心网在发给蜂窝接入 网接入节点的 WLAN选择信息中包含 WLAN网络的标识时, 同时指明 UE接 入该 WLAN网络时使用的服务提供商的域名称。
结合上述第一装置或上述任一种实施方式, 在第八种实施方式下, 所述获 取模块包括:
第一获取单元, 用于接收移动性管理实体 MME/服务通用分组无线服务技 术支持节点 SGSN发送的 WLAN选择信息; 或者,
第二获取单元, 用于在与策略和计费规则功能 PCRF/接入网络发现与选择 功能 ANDSF之间建立连接后, 接收所述 PCRF/ANDSF发送的 WLAN选择信 息。
结合上述第一装置、 第一种至第八种实施方式中的任一种, 在第九种实施 方式下,所述优先级信息包含:接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
本实施例中, 蜂窝接入网接入节点可以通过与 UE的空口交互消息如 RB ( Radio Bearer, 无线 载) Establishment建立消息或 RRC ( Radio Resource Control,无线资源控制 ) Connection Reconfiguration连接重配置消息来指示 UE 接入网络,具体地,可以将选择的网络标识和 /或服务提供商的域名称携带在上 述消息中。
本实施例提供的上述第一装置可以应用于蜂窝接入网接入节点中, 该第一 装置可以执行上述任一方法实施例提供的方法, 详细过程详见方法实施例中的 描述, 此处不赞述。
本实施例提供的上述第一装置, 在 UE从蜂窝接入网接入后, 通过获取 WLAN选择信息, 该 WLAN选择信息包括优先级信息, 所述优先级信息用于 指示对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入, 根据该 WLAN选择信息为 UE选择一个 WLAN网络,并指示 UE接入所选择的 WLAN 网络, 从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE精确的指 导了网络的接入, 可以自动完成, 不仅 UE节省了电量, 而且也提高了 UE的 效率和使用者的体验。 另外, 还可以使 UE在 WLAN中接入和使用业务, 有 效的提高了 UE接入 WLAN的成功率和 WLAN网络的使用率, 使 WLAN网 络能够有效的为蜂窝网络分流数据流量压力, 提高了整网吞吐量。 实施例 8
参见图 21 , 本实施例提供了一种网络选择的第二装置, 包括:
接收模块 2101 ,用于接收蜂窝接入网接入节点发送的指示,所述指示中包 括所述蜂窝接入网接入节点根据无线局域网 WLAN选择信息所选择的 WLAN 网络的信息;
接入模块 2102, 用于根据所述接收模块接收的所述指示接入所述 WLAN 网络;
其中, 所述 WLAN选择信息包含优先级信息, 所述优先级信息用于指示 对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入。
结合上述第二装置, 在第一种实施方式下, 所述指示中还包括: 服务提供 商的域名称; 所述接入模块用于:
根据所述指示中的所述 WLAN网络的信息和所述域名称, 接入所述服务 提供商提供的所述 WLAN。
其中, 所述服务提供商的域名称可以为列表的形式, 包括一个或多个域名 称, 具体地, 该域名称可以包含 PLMN ( Public Land Mobile Network, 公共陆 地移动网络) ID。 进一步地网络侧还可以设置各个服务提供商的优先级, 由蜂 窝接入网接入节点根据自己掌握的 WLAN信息 (WLAN网络支持连接到服务 提供商的能力等 ) 为 UE选择 UE接入的 WLAN所采用的服务提供商发送给 UE, 可以是一个或多个。 或者, 也可以是由核心网在发给蜂窝接入网接入节 点的 WLAN选择信息中包含 WLAN网络的标识时,同时指明 UE接入该 WLAN 网络时使用的服务提供商的域名称。 UE在收到该域名称后, 可以根据该域名 称精确地接入相应的服务提供商提供的该 WLAN。
本实施例中, UE在接入网络侧为其选择的 WLAN网络时, 可以使用该域 名称生成 NAI( Network Access Identifier,网络接入标识符),用该 NAI在 WLAN 网络鉴权。 如果蜂窝接入网接入节点发来的服务提供商域名称有多个, 则 UE 根据自身存储的服务提供商域名称和优先级, 选出该多个服务提供商域名称中 优先级最高的, 生成 NAI并用该 NAI在 WLAN网络鉴权。
结合上述第二装置或第一种实施方式, 在第二种实施方式下, 所述优先级 信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
本实施例提供的上述第二装置可以应用于 UE中, 该第二装置可以执行上 述任一方法实施例提供的方法, 详细过程详见方法实施例中的描述, 此处不赘 述。
本实施例提供的上述第二装置, 通过接收蜂窝接入网接入节点发送的指 示, 该指示中包括网络侧根据无线局域网 WLAN选择信息所选择的 WLAN网 络的信息, 根据该指示接入该 WLAN网络, 从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE精确的指导了网络的接入, 可以自动完成, 不仅 UE节省了电量, 而且也提高了 UE的效率和使用者的体验。 另外, 还可以使 UE在 WLAN中接入和使用业务, 有效的提高了 UE接入 WLAN的成功率和 WLAN网络的使用率, 使 WLAN网络能够有效的为蜂窝网络分流数据流量压 力, 提高了整网吞吐量。 实施例 9
参见图 22, 本实施例提供了一种网络选择的第三装置, 包括:
获取模块 2201 ,用于获取 WLAN选择信息,所述 WLAN选择信息包含优 先级信息, 所述优先级信息用于指示对于所述 UE采用 WLAN接入优先于采 用所述蜂窝接入网接入;
发送模块 2202,用于将所述 WLAN选择信息发送给蜂窝接入网接入节点, 所述 WLAN选择信息用于所述蜂窝接入网接入节点为 UE选择一个 WLAN网 络并指示所述 UE接入所选择的 WLAN网络。
结合上述第三装置, 在第一种实施方式下, 所述获取模块包括:
第一获取单元,用于接收归属用户服务器 HSS发送的所述 UE的签约信息, 从所述签约信息中获取 WLAN选择信息; 或者,
第二获取单元, 用于接收策略和计费规则功能 PCRF/接入网络发现与选择 功能 ANDSF发送的 WLAN选择信息; 或者,
第三获取单元, 用于在所述 UE发生切换时或移动到新的位置后接收老的 MME/SGSN发送的 WLAN选择信息。
本实施例中, WLAN选择信息可以由 MME/SGSN从 HSS/HLR发送的 UE 签约信息中获取; 或者, 也可以是 PCRF/ANDSF根据 UE的签约信息、 业务 使用情况、 位置变化信息、 账户信息或网络策略中的至少一种, 生成并发送给 MME/SGSN的; 或者, 也可以在 UE发生切换时或移动到新的位置后从老的 MME/SGSN获取的。 MME/SGSN在获取到 WLAN选择信息后, 可以直接转 发给蜂窝接入网接入节点, 或者也可以根据本地策略进行修改后发给蜂窝接入 网接入节点, 如果 UE处在漫游网络, 则 MME/SGSN所依据的本地策略可以 是拜访地运营商的 WLAN与蜂窝网络选择的策略。 所述根据本地策略进行修 改, 可以是调整无线接入技术类型与 WLAN 的优先级顺序, 也可以是调整 WLAN不同网络的优先级顺序, 或增加、 禁止某些 WLAN网络。
结合上述第三装置, 在第二种实施方式下, 所述发送模块包括:
第一发送单元, 用于在所述 UE从空闲态转为连接态时, 通过初始上下文 建立请求消息将所述 WLAN选择信息发送给蜂窝基站; 或者,
第二发送单元, 用于通过无线接入承载分配请求消息将所述 WLAN选择 信息发送给蜂窝控制器; 或者, 第三发送单元, 用于通过承载修改请求消息, 将所述 WLAN选择信息发 送给所述蜂窝接入网接入节点; 或者,
第四发送单元, 用于通过下行非接入层 NAS传输消息将所述 WLAN选择 信息发送给所述蜂窝接入网接入节点; 或者,
第五发送单元, 用于通过 UE上下文修改请求消息, 将所述 WLAN选择 信息发送给所述蜂窝接入网接入节点。
结合上述第三装置, 在第三种实施方式下, 所述第三装置还包括: 修改模块, 用于在所述获取模块获取所述 WLAN选择信息之后, 根据本 地的策略对所述 WLAN选择信息进行修改;
相应地, 所述发送模块用于:
将修改后的 WLAN选择信息发送给蜂窝接入网接入节点。
结合上述第三装置、 第一种至第三种实施方式中的任一种, 在第四种实施 方式下,所述优先级信息包含:接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
本实施例提供的上述第三装置可以应用于 MME/SGSN中, 该第三装置可 以执行上述任一方法实施例提供的方法, 详细过程详见方法实施例中的描述, 此处不赞述。
本实施例提供的上述第三装置, 通过获取 WLAN选择信息, 该 WLAN选 择信息包括优先级信息, 所述优先级信息用于指示对于用户设备 UE 采用 WLAN接入优先于采用所述蜂窝接入网接入, 将该 WLAN选择信息发送给蜂 窝接入网接入节点, 以使该蜂窝接入网接入节点为 UE选择一个 WLAN网络 并指示该 UE接入所选择的 WLAN网络,从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE精确的指导了网络的接入, 可以自动完成, 不仅 UE 节省了电量, 而且也提高了 UE的效率和使用者的体验。 另外, 还可以使 UE 在 WLAN中接入和使用业务,有效的提高了 UE接入 WLAN的成功率和 WLAN 网络的使用率, 使 WLAN 网络能够有效的为蜂窝网络分流数据流量压力, 提 高了整网吞吐量。 实施例 10
参见图 23, 本实施例提供了一种网络选择的第四装置, 包括:
生成模块 2301 ,用于生成无线局域网 WLAN选择信息,所述 WLAN选择 信息包含优先级信息, 所述优先级信息用于指示对于所述 UE采用 WLAN接 入优先于采用所述蜂窝接入网接入;
发送模块 2302, 用于将所述生成模块生成的所述 WLAN选择信息发送给 蜂窝接入网接入节点, 所述 WLAN选择信息用于所述蜂窝接入网接入节点为
UE选择一个 WLAN网络并指示所述 UE接入所选择的 WLAN网络。
结合上述第四装置, 在第一种实施方式下, 所述发送模块包括:
建立连接单元, 用于与蜂窝接入网接入节点之间建立连接;
第一发送单元, 通过已建立的连接将所述 WLAN选择信息发送给所述蜂 窝接入网接入节点;
或者, 所述发送模块包括:
第二发送单元, 用于将所述 WLAN选择信息通过分组数据网络网关 PGW 持节点 SGSN, 由所述 MME/SGSN将所述 WLAN选择信息发送给所述蜂窝接 入网接入节点; 或, 将所述 WLAN选择信息通过网关通用分组无线业务支持 节点 GGSN将所述 WLAN选择信息发送给服务通用分组无线业务支持节点 SGSN,由所述 SGSN将所述 WLAN选择信息发送给所述蜂窝接入网接入节点。
结合上述第一种实施方式,在第二种实施方式下,所述建立连接单元用于: 在所述 UE的网际协议连通性接入网络 IP-CAN会话建立后, 向所述蜂窝 接入网接入节点发送连接建立消息, 与所述蜂窝接入网接入节点建立连接; 或 者,
接收所述蜂窝接入网接入节点在所述 UE从空闲态转为连接态后发送的连 接建立消息, 与所述蜂窝接入网接入节点建立连接。
结合上述第四装置, 在第三种实施方式下, 所述生成模块用于:
根据所述 UE的签约信息、 业务使用情况、 位置变化信息、 账户信息或网 络策略中的至少一种, 生成 WLAN选择信息。
其中, 所述 UE的签约信息包括但不限于 UE的流量套餐、 时长套餐等信 息。 UE的位置变化信息包括但不限于: UE是否位于特定位置区、 路由区、 跟 踪区、 小区等等。 所述账户信息包括但不限于: 用户的账户的余额信息等。 所 述网络策略包括但不限于: 网络负载均衡策略等。 例如, 初始情况下 UE 的 WLAN选择信息中蜂窝网络优先级高于 WLAN的优先级, 当 UE的蜂窝网络 流量套餐或时长套餐在该套餐周期内已经用尽或即将用尽, UE 的蜂窝网络使 用费用将会上升或蜂窝网络速率将会下降, PCRF从计费系统获得 UE的套餐 使用状态, 触发 WLAN选择信息调整为 WLAN的优先级高于蜂窝网络的优先 级。
结合上述第四装置、 第一种至第三种实施方式中的任一种, 在第四种实施 方式下,所述优先级信息包含:接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
本实施例提供的上述第四装置可以应用于 PCRF/ ANDSF中, 该第四装置 可以执行上述任一方法实施例提供的方法, 详细过程详见方法实施例中的描 述, 此处不赞述。
本实施例提供的上述第四装置, 通过生成 WLAN选择信息, 该 WLAN选 择信息包括优先级信息, 所述优先级信息用于指示对于用户设备 UE 采用 WLAN接入优先于采用所述蜂窝接入网接入, 将该 WLAN选择信息发送给蜂 窝接入网接入节点, 以使该蜂窝接入网接入节点为 UE选择一个 WLAN网络 并指示该 UE接入所选择的 WLAN网络,从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE精确的指导了网络的接入, 可以自动完成, 不仅 UE 节省了电量, 而且也提高了 UE的效率和使用者的体验。 另外, 还可以使 UE 在 WLAN中接入和使用业务,有效的提高了 UE接入 WLAN的成功率和 WLAN 网络的使用率, 使 WLAN 网络能够有效的为蜂窝网络分流数据流量压力, 提 高了整网吞吐量。 实施例 11
参见图 24, 本实施例提供了一种蜂窝接入网接入节点, 包括:
处理器 2401 , 用于在用户设备 UE从蜂窝接入网接入后, 获取无线局域网 WLAN选择信息, 所述 WLAN选择信息包含优先级信息, 所述优先级信息用 于指示对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入; 根据 所述优先级信息为所述 UE选择 WLAN网络, 其中, 所述选择的 WLAN网络 的接入优先级高于所述蜂窝接入网;
发射机 2402, 用于指示所述 UE接入所选择的网络。
本实施例中, WLAN选择信息可以由 MME/SGSN从 HSS/HLR发送的 UE 签约信息中获取, 或者, 也可以是 PCRF/ANDSF根据 UE的签约信息、 业务 使用情况、 位置变化信息、 账户信息或网络策略中的至少一种, 生成并发送给 MME/SGSN的。 MME/SGSN在获取到 WLAN选择信息后, 可以直接转发给 蜂窝接入网接入节点, 或者也可以根据本地策略进行修改后发给蜂窝接入网接 入节点, 如果 UE处在漫游网络, 则 MME/SGSN所依据的本地策略可以是拜 访地运营商的 WLAN与蜂窝网络选择的策略。 所述根据本地策略进行修改, 可以是调整无线接入技术类型与 WLAN的优先级顺序, 也可以是调整 WLAN 不同网络的优先级顺序, 或增加、 禁止某些 WLAN网络。
所述 WLAN选择信息中包含所选择的网络的标识信息, 如 SSID ( Service Set Identification, 业务集标识)、 SSID+HESSID ( Homogenous Extended Service Set Identifier, 同源扩展业务集标识符)、 OUI ( Organization Universal Identity 组织全球标识 )或 BSSID ( Basic Service Set Identification,基本业务集标识 ) 等等。 所述优先级信息可以根据需要按照不同的粒度来设置, 可以按照蜂窝网 络与 WLAN的粒度来设置, 或者可以按照蜂窝网络与 WLAN的接入技术类型 的粒度来设置, 进一步地, WLAN还可以细分为不同标识的 WLAN等等, 本 实施例对此不做具体限定。
结合上述蜂窝接入网接入节点, 在第一种实施方式下, 所述优先级信息包 含至少两个 WLAN网络的优先级信息; 所述处理器用于:
根据所述至少两个 WLAN网络的优先级信息, 选择所述至少两个 WLAN 网络中优先级最高的 WLAN网络。
结合上述蜂窝接入网接入节点或第一种实施方式, 在第二种实施方式下, 所述 WLAN选择信息还包括负载条件, 所述处理器用于: 根据所述优先级信 息和所述负载条件为所述 UE选择 WLAN网络, 其中所述选择的 WLAN网络 满足所述负载条件。
结合上述第一种实施方式, 在第三种实施方式下, 所述 WLAN选择信息 还包含所述至少两个 WLAN网络的负载信息; 所述处理器用于:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的负载信息, 选择所述至少两个 WLAN 网络中优先级最高且负载最低的 WLAN网络。
结合上述蜂窝接入网接入节点或第一种实施方式, 在第四种实施方式下, 所述 WLAN选择信息还包括信号质量条件, 所述处理器用于: 根据所述优先 级信息和所述信号质量条件为所述 UE选择 WLAN网络, 其中, 所述 UE在所 述选择的 WLAN网络中接收的信号满足所述信号质量条件。 结合上述第四种实施方式, 在第五种实施方式下, 所述 WLAN选择信息 还包含所述至少两个 WLAN网络的信号质量信息; 所述处理器用于:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的信号质量信息, 选择所述至少两个 WLAN 网络中优先级最高且信号质量最 好的 WLAN网给。
结合上述第一装置, 在第六种实施方式下, 所述 WLAN选择信息还包括 位置条件, 所述处理器用于:
根据所述优先级信息和所述位置条件为所述 UE选择 WLAN网络, 其中 所述 UE位于所述位置条件中指示的区域之内或者位于所述位置条件中指示的 区域之外。
另外, 还可以在指定的时间段内或除指定的时间段外的任意时刻, 根据所 述无线蜂窝接入技术类型与 WLAN的优先级信息, 为 UE选择优先级最高的 网络。
本实施例中, 上述负载条件、 信号质量条件、 位置条件和指定时间段还可 以任意组合起来应用, 即所述 WLAN选择信息中可以包括负载条件、 信号质 量条件、 位置条件和指定时间段中的任意一种或几种。
具体地, WLAN的负载满足该负载条件, 可以具体包括: WLAN的负载 小于或大于设定的第一阈值。
具体地, UE在 WLAN中的信号质量满足该信号质量条件,可以具体包括: UE在 WLAN中接收的信号质量小于或大于设定的第二阈值。
具体地, 所述位置条件中指示的区域包括但不限于: 特定位置区 (LA ), 路由区( RA ),跟踪区 ( TA ),控制器( RNC ID, SRC ID ),基站 ( eNB, NodeB, BTS )或小区 (Cell )等。
结合上述蜂窝接入网接入节点, 在第七种实施方式下, 所述 WLAN选择 信息还包含服务提供商的域名称;
所述发射机用于:
指示所述 UE接入所述服务提供商提供的所述 WLAN。
其中, 所述服务提供商的域名称(realm name )可以为列表的形式, 包括 一个或多个域名称, 具体地, 该域名称可以包含 PLMN ( Public Land Mobile Network, 公共陆地移动网络) ID, 进一步地还可以设置各个服务提供商的优 先级, 由蜂窝接入网接入节点根据自己掌握的 WLAN信息 ( WLAN网络支持 连接到服务提供商的能力等)为 UE选择 UE接入的 WLAN所采用的服务提供 商发送给 UE, 可以是一个或多个。 或者, 也可以是由核心网在发给蜂窝接入 网接入节点的 WLAN选择信息中包含 WLAN网络的标识时, 同时指明 UE接 入该 WLAN网络时使用的服务提供商的域名称。
结合上述蜂窝接入网接入节点, 在第八种实施方式下, 还包括接收机; 所述接收机用于: 送的 WLAN选择信息; 或者,
在与策略和计费规则功能 PCRF/接入网络发现与选择功能 ANDSF之间建 立连接后, 接收所述 PCRF/ANDSF发送的 WLAN选择信息。
结合上述蜂窝接入网接入节点、 第一种至第八种实施方式中的任一种, 在 第九种实施方式下, 所述优先级信息包含: 接入所述蜂窝接入网的接入技术类 型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
本实施例中, 蜂窝接入网接入节点可以通过与 UE的空口交互消息如 RB ( Radio Bearer, 无线 载) Establishment建立消息或 RRC ( Radio Resource Control,无线资源控制 ) Connection Reconfiguration连接重配置消息来指示 UE 接入网络,具体地,可以将选择的网络标识和 /或服务提供商的域名称携带在上 述消息中。
本实施例提供的上述蜂窝接入网接入节点可以执行上述任一方法实施例 提供的方法, 详细过程详见方法实施例中的描述, 此处不赘述。
本实施例提供的上述蜂窝接入网接入节点, 在 UE从蜂窝接入网接入后, 通过获取 WLAN选择信息, 该 WLAN选择信息包括优先级信息, 所述优先级 信息用于指示对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入, 根据该 WLAN选择信息为 UE选择一个 WLAN网络, 并指示 UE接入所选择 的 WLAN网络, 从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE 精确的指导了网络的接入, 可以自动完成, 不仅 UE节省了电量, 而且也提高 了 UE的效率和使用者的体验。 另外,还可以使 UE在 WLAN中接入和使用业 务,有效的提高了 UE接入 WLAN的成功率和 WLAN网络的使用率,使 WLAN 网络能够有效的为蜂窝网络分流数据流量压力, 提高了整网吞吐量。 实施例 12 参见图 25, 本实施例提供了一种 UE, 包括:
接收机 2501 ,用于接收蜂窝接入网接入节点发送的指示,所述指示中包括 所述蜂窝接入网接入节点根据无线局域网 WLAN选择信息所选择的 WLAN网 络的信息;
处理器 2502, 用于根据所述指示接入所述 WLAN网络;
其中, 所述 WLAN选择信息包含优先级信息, 所述优先级信息用于指示 对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入。
结合上述 UE, 在第一种实施方式下, 所述指示中还包括: 服务提供商的 域名称;
所述处理器用于:
根据所述指示中的所述网络的信息和所述域名称,接入所述服务提供商提 供的所述 WLAN。
其中, 所述服务提供商的域名称可以为列表的形式, 包括一个或多个域名 称, 具体地, 该域名称可以包含 PLMN ( Public Land Mobile Network, 公共陆 地移动网络) ID。 进一步地网络侧还可以设置各个服务提供商的优先级, 由蜂 窝接入网接入节点根据自己掌握的 WLAN信息 (WLAN网络支持连接到服务 提供商的能力等 ) 为 UE选择 UE接入的 WLAN所采用的服务提供商发送给 UE, 可以是一个或多个。 或者, 也可以是由核心网在发给蜂窝接入网接入节 点的 WLAN选择信息中包含 WLAN网络的标识时,同时指明 UE接入该 WLAN 网络时使用的服务提供商的域名称。 UE在收到该域名称后, 可以根据该域名 称精确地接入相应的服务提供商提供的该 WLAN。
本实施例中, UE在接入网络侧为其选择的 WLAN网络时, 可以使用该域 名称生成 NAI( Network Access Identifier,网络接入标识符),用该 NAI在 WLAN 网络鉴权。 如果蜂窝接入网接入节点发来的服务提供商域名称有多个, 则 UE 根据自身存储的服务提供商域名称和优先级,选出该多个服务提供商域名称中 优先级最高的, 生成 NAI并用该 NAI在 WLAN网络鉴权。
结合上述 UE或第一种实施方式, 在第二种实施方式下, 所述优先级信息 包含:接入所述蜂窝接入网的接入技术类型的优先级,和 /或,接入所述 WLAN 的接入技术类型的优先级。
本实施例提供的上述 UE可以执行上述任一方法实施例提供的方法, 详细 过程详见方法实施例中的描述, 此处不赘述。 本实施例提供的上述 UE, 通过接收蜂窝接入网接入节点发送的指示, 该 指示中包括网络侧根据无线局域网 WLAN选择信息所选择的 WLAN网络的信 息, 根据该指示接入该 WLAN网络, 从而提高 UE接入网络的效率, 实现 UE 的行为可控, 为 UE精确的指导了网络的接入, 可以自动完成, 不仅 UE节省 了电量, 而且也提高了 UE 的效率和使用者的体验。 另外, 还可以使 UE在 WLAN中接入和使用业务, 有效的提高了 UE接入 WLAN的成功率和 WLAN 网络的使用率, 使 WLAN 网络能够有效的为蜂窝网络分流数据流量压力, 提 高了整网吞吐量。 实施例 13
参见图 26, 本实施例提供了一种移动管理网元, 包括:
处理器 2601 ,用于获取 WLAN选择信息,所述 WLAN选择信息包含优先 级信息, 所述优先级信息用于指示对于所述 UE采用 WLAN接入优先于采用 所述蜂窝接入网接入;
发射机 2602, 用于将所述 WLAN选择信息发送给蜂窝接入网接入节点, 所述 WLAN选择信息用于所述蜂窝接入网接入节点为 UE选择一个 WLAN网 络并指示所述 UE接入所选择的 WLAN网络。
结合上述移动管理网元, 在第一种实施方式下, 所述移动管理网元还包括 接收机;
所述接收机, 用于接收归属用户服务器 HSS发送的所述 UE的签约信息; 相应地, 所述处理器从所述签约信息中获取 WLAN选择信息; 或者,
所述接收机, 用于接收策略和计费规则功能 PCRF/接入网络发现与选择功 能 ANDSF发送的 WLAN选择信息; 或者,
所述接收机, 用于在所述 UE发生切换时或移动到新的位置后接收老的移 动管理网元发送的 WLAN选择信息。
本实施例中, 所述移动管理网元可以具体为 MME/SGSN。
本实施例中, WLAN选择信息可以由 MME/SGSN从 HSS/HLR发送的 UE 签约信息中获取; 或者, 也可以是 PCRF/ANDSF根据 UE的签约信息、 业务 使用情况、 位置变化信息、 账户信息或网络策略中的至少一种, 生成并发送给 MME/SGSN的; 或者, 也可以在 UE发生切换时或移动到新的位置后从老的 MME/SGSN获取的。 MME/SGSN在获取到 WLAN选择信息后, 可以直接转 发给蜂窝接入网接入节点, 或者也可以根据本地策略进行修改后发给蜂窝接入 网接入节点, 如果 UE处在漫游网络, 则 MME/SGSN所依据的本地策略可以 是拜访地运营商的 WLAN与蜂窝网络选择的策略。 所述根据本地策略进行修 改, 可以是调整无线接入技术类型与 WLAN 的优先级顺序, 也可以是调整 WLAN不同网络的优先级顺序, 或增加、 禁止某些 WLAN网络。
结合上述移动管理网元, 在第二种实施方式下, 所述发射机用于: 在所述 UE从空闲态转为连接态时, 通过初始上下文建立请求消息将所述 WLAN选择信息发送给蜂窝基站; 或者,
通过无线接入承载分配请求消息将所述 WLAN选择信息发送给蜂窝控制 H; 或者,
通过承载修改请求消息, 将所述 WLAN选择信息发送给所述蜂窝接入网 接入节点; 或者,
通过下行非接入层 NAS传输消息将所述 WLAN选择信息发送给所述蜂窝 接入网接入节点; 或者,
通过 UE上下文修改请求消息, 将所述 WLAN选择信息发送给所述蜂窝 接入网接入节点。
结合上述移动管理网元, 在第三种实施方式下, 所述处理器还用于: 在获取所述 WLAN选择信息之后,根据本地的策略对所述 WLAN选择信 息进行修改;
相应地, 所述发射机用于:
将修改后的 WLAN选择信息发送给蜂窝接入网接入节点。
结合上述移动管理网元、 第一种至第三种实施方式中的任一种, 在第四种 实施方式下, 所述优先级信息包含: 接入所述蜂窝接入网的接入技术类型的优 先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。 方法, 详细过程详见方法实施例中的描述, 此处不赘述。
本实施例提供的上述移动管理网元,通过获取 WLAN选择信息,该 WLAN 选择信息包括优先级信息, 所述优先级信息用于指示对于用户设备 UE 采用 WLAN接入优先于采用所述蜂窝接入网接入, 将该 WLAN选择信息发送给蜂 窝接入网接入节点, 以使该蜂窝接入网接入节点为 UE选择一个 WLAN网络 并指示该 UE接入所选择的 WLAN网络,从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE精确的指导了网络的接入, 可以自动完成, 不仅 UE 节省了电量, 而且也提高了 UE的效率和使用者的体验。 另外, 还可以使 UE 在 WLAN中接入和使用业务,有效的提高了 UE接入 WLAN的成功率和 WLAN 网络的使用率, 使 WLAN 网络能够有效的为蜂窝网络分流数据流量压力, 提 高了整网吞吐量。 实施例 14
参见图 27, 本实施例提供了一种 PCRF/ANDSF, 包括:
处理器 2701 ,用于生成无线局域网 WLAN选择信息,所述 WLAN选择信 息包含优先级信息, 所述优先级信息用于指示对于所述 UE采用 WLAN接入 优先于采用所述蜂窝接入网接入;
发射机 2702, 用于将所述 WLAN选择信息发送给蜂窝接入网接入节点, 所述 WLAN选择信息用于所述蜂窝接入网接入节点为 UE选择一个 WLAN网 络并指示所述 UE接入所选择的 WLAN网络。
结合上述 PCRF/ANDSF, 在第一种实施方式下, 所述发射机用于: 与蜂窝接入网接入节点之间建立连接;
通过已建立的连接将所述 WLAN选择信息发送给所述蜂窝接入网接入节 点;
或者, 所述发射机用于:
述 MME/SGSN将所述 WLAN选择信息发送给所述蜂窝接入网接入节点; 或, 将所述 WLAN选择信息通过网关通用分组无线业务支持节点 GGSN将所述 WLAN选择信息发送给服务通用分组无线业务支持节点 SGSN, 由所述 SGSN 将所述 WLAN选择信息发送给所述蜂窝接入网接入节点。
结合上述第一种实施方式, 在第二种实施方式下, 所述发射机用于: 在所述 UE的网际协议连通性接入网络 IP-CAN会话建立后, 向所述蜂窝 接入网接入节点发送连接建立消息, 与所述蜂窝接入网接入节点建立连接; 或 者,
所述 PCRF/ANDSF还包括接收机, 该接收机用于: 接收所述蜂窝接入网 接入节点在所述 UE从空闲态转为连接态后发送的连接建立消息, 相应地, 所 述发射机与接收机用于与所述蜂窝接入网接入节点建立连接。
结合上述 PCRF/ANDSF, 在第三种实施方式下, 所述处理器用于: 根据所述 UE的签约信息、 业务使用情况、 位置变化信息、 账户信息或网 络策略中的至少一种, 生成 WLAN选择信息。
其中, 所述 UE的签约信息包括但不限于 UE的流量套餐、 时长套餐等信 息。 UE的位置变化信息包括但不限于: UE是否位于特定位置区、 路由区、 跟 踪区、 小区等等。 所述账户信息包括但不限于: 用户的账户的余额信息等。 所 述网络策略包括但不限于: 网络负载均衡策略等。 例如, 初始情况下 UE 的 WLAN选择信息中蜂窝网络优先级高于 WLAN的优先级, 当 UE的蜂窝网络 流量套餐或时长套餐在该套餐周期内已经用尽或即将用尽, UE 的蜂窝网络使 用费用将会上升或蜂窝网络速率将会下降, PCRF从计费系统获得 UE的套餐 使用状态, 触发 WLAN选择信息调整为 WLAN的优先级高于蜂窝网络的优先 级。
结合上述 PCRF/ANDSF、第一种至第三种实施方式中的任一种,在第四种 实施方式下, 所述优先级信息包含: 接入所述蜂窝接入网的接入技术类型的优 先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
本实施例提供的上述 PCRF/ANDSF可以执行上述任一方法实施例提供的 方法, 详细过程详见方法实施例中的描述, 此处不赘述。
本实施例提供的上述 PCRF/ANDSF,通过生成 WLAN选择信息,该 WLAN 选择信息包括优先级信息, 所述优先级信息用于指示对于用户设备 UE 采用 WLAN接入优先于采用所述蜂窝接入网接入, 将该 WLAN选择信息发送给蜂 窝接入网接入节点, 以使该蜂窝接入网接入节点为 UE选择一个 WLAN网络 并指示该 UE接入所选择的 WLAN网络,从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE精确的指导了网络的接入, 可以自动完成, 不仅 UE 节省了电量, 而且也提高了 UE的效率和使用者的体验。 另外, 还可以使 UE 在 WLAN中接入和使用业务,有效的提高了 UE接入 WLAN的成功率和 WLAN 网络的使用率, 使 WLAN 网络能够有效的为蜂窝网络分流数据流量压力, 提 高了整网吞吐量。 实施例 15
参见图 28, 本实施例提供了一种网络选择的系统, 包括: 蜂窝接入网接入 节点 2801、 以及用户设备 UE 2802;
所述蜂窝接入网接入节点 2801可以为如实施例 11所述的蜂窝接入网接入 节点, 或者也可以为包括如实施例 7所述的第一装置的蜂窝接入网接入节点; 所述 UE 2802可以为如实施例 12所述的 UE,或者也可以为包括如实施例 8所述的第二装置的 UE。
本实施例提供的上述系统可以执行上述任一方法实施例提供的方法, 详细 过程详见方法实施例中的描述, 此处不赘述。
本实施例提供的上述系统, 在 UE从蜂窝接入网接入后, 通过蜂窝接入网 接入节点获取 WLAN选择信息, 该 WLAN选择信息包括优先级信息, 所述优 先级信息用于指示对于用户设备 UE采用 WLAN接入优先于采用所述蜂窝接 入网接入, 根据该 WLAN选择信息为 UE选择一个 WLAN网络, 并指示 UE 接入所选择的 WLAN网络, UE在接收到该指示后, 根据该指示接入网络侧所 选择的网络, 从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE精 确的指导了网络的接入, 可以自动完成, 不仅 UE节省了电量, 而且也提高了 UE的效率和使用者的体验。另外,还可以使 UE在 WLAN中接入和使用业务, 有效的提高了 UE接入 WLAN的成功率和 WLAN网络的使用率, 使 WLAN 网络能够有效的为蜂窝网络分流数据流量压力, 提高了整网吞吐量。 实施例 16
参见图 29, 本实施例提供了一种网络选择的系统, 包括: 蜂窝接入网接入 节点 2901、 用户设备 UE 2902、 以及移动管理网元 2903;
所述蜂窝接入网接入节点 2901包括如实施例 11所述的蜂窝接入网接入节 点, 或者也可以为包括如实施例 7所述的第一装置的蜂窝接入网接入节点; 所述 UE 2902可以为如实施例 12所述的 UE,或者也可以为包括如实施例 8所述的第二装置的 UE;
所述移动管理网元 2903可以为如实施例 13所述的移动管理网元, 或者也 可以为包括如实施例 9所述的第三装置的移动管理网元。
本实施例提供的上述系统可以执行上述任一方法实施例提供的方法, 详细 过程详见方法实施例中的描述, 此处不赘述。
本实施例提供的上述系统, 在 UE从蜂窝接入网接入后, 通过移动管理网 元获取 WLAN选择信息并发送给蜂窝接入网接入节点, 该 WLAN选择信息包 括优先级信息, 所述优先级信息用于指示对于用户设备 UE采用 WLAN接入 优先于采用所述蜂窝接入网接入, 蜂窝接入网接入节点根据该 WLAN选择信 息为 UE选择一个网络,并指示 UE接入所选择的网络, UE在接收到该指示后, 根据该指示接入网络侧所选择的网络,从而提高 UE接入网络的效率,实现 UE 的行为可控, 为 UE精确的指导了网络的接入, 可以自动完成, 不仅 UE节省 了电量, 而且也提高了 UE 的效率和使用者的体验。 另外, 还可以使 UE在 WLAN中接入和使用业务, 有效的提高了 UE接入 WLAN的成功率和 WLAN 网络的使用率, 使 WLAN 网络能够有效的为蜂窝网络分流数据流量压力, 提 高了整网吞吐量。 实施例 17
参见图 30, 本实施例提供了一种网络选择的系统, 包括: 蜂窝接入网接入 节点 3001、 用户设备 UE 3002、 以及策略和计费规则功能 PCRF/接入网络发现 与选择功能 ANDSF 3003;
所述蜂窝接入网接入节点 3001包括如实施例 11所述的蜂窝接入网接入节 点, 或者也可以为包括如实施例 7所述的第一装置的蜂窝接入网接入节点; 所述 UE 3002可以为如实施例 12所述的 UE,或者也可以为包括如实施例 8所述的第二装置的 UE;
所述 PCRF/ANDSF 3003可以为如实施例 14所述的 PCRF/ANDSF, 或者 也可以为包括如实施例 10所述的第四装置的 PCRF/ANDSF。
本实施例提供的上述系统可以执行上述任一方法实施例提供的方法, 详细 过程详见方法实施例中的描述, 此处不赘述。
本实施例提供的上述系统, 通过 PCRF/ANDSF生成 WLAN选择信息, 该 WLAN选择信息包括优先级信息, 所述优先级信息用于指示对于用户设备 UE 采用 WLAN接入优先于采用所述蜂窝接入网接入,将该 WLAN选择信息发送 给蜂窝接入网接入节点, 蜂窝接入网接入节点收到后根据该 WLAN选择信息 为 UE选择一个网络并指示该 UE接入所选择的网络, UE根据该指示接入该网 络, 从而提高 UE接入网络的效率, 实现 UE的行为可控, 为 UE精确的指导 了网络的接入, 可以自动完成, 不仅 UE节省了电量, 而且也提高了 UE的效 率和使用者的体验。 另外, 还可以使 UE在 WLAN中接入和使用业务, 有效 的提高了 UE接入 WLAN的成功率和 WLAN网络的使用率, 使 WLAN网络 能够有效的为蜂窝网络分流数据流量压力, 提高了整网吞吐量。 本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通 过硬件来完成, 也可以通过程序来指令相关的硬件完成, 所述的程序可以存储 于一种计算机可读存储介质中, 上述提到的存储介质可以是只读存储器, 磁盘 或光盘等。
以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 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、 一种网络选择的方法, 其特征在于, 所述方法包括:
在用户设备 UE从蜂窝接入网接入后,蜂窝接入网接入节点获取无线局域网 WLAN选择信息, 所述 WLAN选择信息包含优先级信息, 所述优先级信息用于 指示对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入;
所述蜂窝接入网接入节点根据所述优先级信息为所述 UE选择 WLAN网络, 其中, 所述选择的 WLAN网络的接入优先级高于所述蜂窝接入网;
所述蜂窝接入网接入节点指示所述 UE接入所述选择的 WLAN网络。
2、 根据权利要求 1所述的方法, 其特征在于, 所述优先级信息包含至少两 个 WLAN网络的优先级信息;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述至少两个 WLAN 网络的优先级信息, 选择所述至少两个 WLAN 网络中优先级最高的 WLAN网络。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述 WLAN选择信息 还包含负载条件;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述优先级信息和所述负载条件为所述 UE选择 WLAN网络, 其中所 述选择的 WLAN网络满足所述负载条件。
4、 根据权利要求 2所述的方法, 其特征在于, 所述 WLAN选择信息还包 含所述至少两个 WLAN网络的负载信息;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的负载信息,选择所述至少两个 WLAN网络中优先级最高且负载最低的 WLAN 网络。
5、 根据权利要求 1或 2所述的方法, 其特征在于, 所述 WLAN选择信息 还包含信号质量条件, 根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述优先级信息和所述信号质量条件为所述 UE选择 WLAN网络, 其 中, 所述 UE在所述选择的 WLAN网络中接收的信号满足所述信号质量条件。
6、 根据权利要求 5所述的方法, 其特征在于, 所述 WLAN选择信息还包 含所述至少两个 WLAN网络的信号质量信息;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的信号质量信息, 选择所述至少两个 WLAN网络中优先级最高且信号质量最好 的 WLAN网给。
7、 根据权利要求 1所述的方法, 其特征在于, 所述 WLAN选择信息还包 含位置条件;
根据所述优先级信息为所述 UE选择 WLAN网络, 包括:
根据所述优先级信息和所述位置条件为所述 UE选择 WLAN网络, 其中所 述 UE位于所述位置条件中指示的区域之内或者位于所述位置条件中指示的区 域之外。
8、 根据权利要求 1 - 7任一所述的方法, 其特征在于, 所述 WLAN选择信 息还包含服务提供商的域名称;
所述蜂窝接入网接入节点指示所述 UE接入所述选择的 WLAN网络,包括: 所述蜂窝接入网接入节点指示所述 UE接入所述服务提供商提供的所述选 择的 WLAN网络。
9、 根据权利要求 1 - 7任一所述的方法, 其特征在于, 所述蜂窝接入网接 入节点获取无线局域网 WLAN选择信息, 包括:
所述蜂窝接入网接入节点接收移动性管理实体 MME或服务通用分组无线 服务技术支持节点 SGSN发送的所述 WLAN选择信息; 或者,
所述蜂窝接入网接入节点在与策略和计费规则功能 PCRF或接入网络发现 与选择功能 ANDSF之间建立连接后, 接收所述 PCRF或 ANDSF发送的所述 WLAN选择信息。
10、 根据权利要求 1 - 9任一所述的方法, 其特征在于, 所述优先级信息包 含:
接入所述蜂窝接入网的接入技术类型的优先级, 和 /或,接入所述 WLAN的 接入技术类型的优先级。
11、 一种网络选择的方法, 其特征在于, 所述方法包括:
接收蜂窝接入网接入节点发送的指示, 所述指示中包括所述蜂窝接入网接 入节点根据无线局域网 WLAN选择信息所选择的 WLAN网络的信息;
根据所述指示接入所述 WLAN网络;
其中, 所述 WLAN选择信息包括优先级信息, 所述优先级信息用于指示所 述 UE采用 WLAN接入优先于采用蜂窝接入网接入。
12、 根据权利要求 11所述的方法, 其特征在于, 所述指示中还包括: 服务 提供商的域名称;
根据所述指示接入所述 WLAN网络, 包括:
根据所述指示中的所述 WLAN网络的信息和所述域名称, 接入所述服务提 供商提供的所述 WLAN。
13、 根据权利要求 11或 12所述的方法, 其特征在于, 所述优先级信息包 含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的 接入技术类型的优先级。
14、 一种网络选择的方法, 其特征在于, 所述方法包括:
移动管理网元获取无线局域网 WLAN选择信息, 所述 WLAN选择信息包 括优先级信息, 所述优先级信息用于指示对于用户设备 UE采用 WLAN接入优 先于采用所述蜂窝接入网接入;
所述移动管理网元将所述 WLAN选择信息发送给蜂窝接入网接入节点, 所 述 WLAN选择信息用于所述蜂窝接入网接入节点为所述 UE选择 WLAN网络并 指示所述 UE接入所选择的 WLAN网络。
15、 根据权利要求 14 所述的方法, 其特征在于, 所述移动管理网元获取 WLAN选择信息, 包括:
所述移动管理网元接收归属用户服务器 HSS发送的所述 UE的签约信息, 从所述签约信息中获取 WLAN选择信息; 或者,
所述移动管理网元接收策略和计费规则功能 PCRF或接入网络发现与选择 功能 ANDSF发送的 WLAN选择信息; 或者,
所述移动管理网元在所述 UE发生切换时或移动到新的位置后接收老的移 动性管理网元发送的 WLAN选择信息。
16、 根据权利要求 14所述的方法, 其特征在于, 所述移动管理网元将所述 WLAN选择信息发送给蜂窝接入网接入节点, 包括:
所述移动管理网元在所述 UE从空闲态转为连接态时,通过初始上下文建立 请求消息将所述 WLAN选择信息发送给蜂窝基站; 或者,
所述移动管理网元通过无线接入承载分配请求消息将所述 WLAN选择信息 发送给蜂窝控制器; 或者,
所述移动管理网元通过承载修改请求消息, 将所述 WLAN选择信息发送给 所述蜂窝接入网接入节点; 或者,
所述移动管理网元通过下行非接入层 NAS传输消息将所述 WLAN选择信 息发送给所述蜂窝接入网接入节点; 或者,
所述移动管理网元通过 UE上下文修改请求消息, 将所述 WLAN选择信息 发送给所述蜂窝接入网接入节点。
17、 根据权利要求 14 所述的方法, 其特征在于, 所述移动管理网元获取 WLAN选择信息之后, 还包括: 所述移动管理网元将所述 WLAN选择信息发送给蜂窝接入网接入节点, 包 括:
所述移动管理网元将修改后的 WLAN选择信息发送给所述蜂窝接入网接入 节点。
18、 根据权利要求 14至 17中任一项所述的方法, 其特征在于, 所述优先 级信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述
WLAN的接入技术类型的优先级。
19、 一种网络选择的方法, 其特征在于, 所述方法包括:
策略和计费规则功能 PCRF或接入网络发现与选择功能 ANDSF生成无线局 域网 WLAN选择信息, 所述 WLAN选择信息包含优先级信息, 所述优先级信 息用于指示对于用户设备 UE采用 WLAN接入优先于采用所述蜂窝接入网接入; 所述 PCRF或 ANDSF将所述 WLAN选择信息发送给蜂窝接入网接入节点, 所述 WLAN选择信息用于所述蜂窝接入网接入节点为所述 UE选择 WLAN网络 并指示所述 UE接入所选择的 WLAN网络。
20、 根据权利要求 19所述的方法, 其特征在于, 所述 PCRF或 ANDSF将 所述 WLAN选择信息发送给蜂窝接入网接入节点, 包括:
所述 PCRF或 ANDSF与蜂窝接入网接入节点之间建立连接,通过已建立的 连接将所述 WLAN选择信息发送给所述蜂窝接入网接入节点; 或者,
所述 PCRF或 ANDSF将所述 WLAN选择信息发送给分组数据网络网关 PGW, 所述 PGW将所述 WLAN选择信息发送给服务网关 SGW, 所述 SGW将 所述 WLAN选择信息发送给移动性管理实体 MME或服务通用分组无线服务技 术支持节点 SGSN, 所述 MME或 SGSN将所述 WLAN选择信息发送给所述蜂 窝接入网接入节点; 或者,
所述 PCRF或 ANDSF将所述 WLAN选择信息发送给网关通用分组无线业 务支持节点 GGSN,所述 GGSN将所述 WLAN选择信息发送给服务通用分组无 线业务支持节点 SGSN, 所述 SGSN将所述 WLAN选择信息发送给所述蜂窝接 入网接入节点。
21、 根据权利要求 20所述的方法, 其特征在于, 所述 PCRF或 ANDSF与 蜂窝接入网接入节点之间建立连接, 包括: 建立后, 向所述蜂窝接入网接入节点发送连接建立消息, 与所述蜂窝接入网接 入节点建立连接; 或者,
所述 PCRF或 ANDSF接收所述蜂窝接入网接入节点在所述 UE从空闲态转 为连接态后发送的连接建立消息, 与所述蜂窝接入网接入节点建立连接。
22、根据权利要求 19所述的方法,其特征在于, PCRF或 ANDSF生成 WLAN 选择信息, 包括:
所述 PCRF或 ANDSF根据所述 UE的签约信息、 业务使用情况、 位置变化 信息、 账户信息或网络策略中的至少一种, 生成 WLAN选择信息。
23、 根据权利要求 19至 22中任一项所述的方法, 其特征在于, 所述优先 级信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
24、 一种网络选择的装置, 其特征在于, 所述装置包括:
获取模块, 用于在用户设备 UE 从蜂窝接入网接入后, 获取无线局域网 WLAN选择信息, 所述 WLAN选择信息包含优先级信息, 所述优先级信息用于 指示对于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入;
选择模块, 用于根据所述优先级信息为所述 UE选择 WLAN网络, 其中, 所述选择的 WLAN网络的接入优先级高于所述蜂窝接入网;
发送模块, 用于指示所述 UE接入所述选择的 WLAN网络。
25、 根据权利要求 24所述的装置, 其特征在于, 所述优先级信息包含至少 两个 WLAN网络的优先级信息;
所述选择模块用于:
根据所述至少两个 WLAN 网络的优先级信息, 选择所述至少两个 WLAN 网络中优先级最高的 WLAN网络。
26、 根据权利要求 24或 25所述的装置, 其特征在于, 所述 WLAN选择信 息还包括负载条件, 所述选择模块用于:
根据所述优先级信息和所述负载条件为所述 UE选择 WLAN网络, 其中所 述选择的 WLAN网络满足所述负载条件。
27、 根据权利要求 25所述的装置, 其特征在于, 所述 WLAN选择信息还 包含所述至少两个 WLAN网络的负载信息;
所述选择模块用于:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的负载信息,选择所述至少两个 WLAN网络中优先级最高且负载最低的 WLAN 网络。
28、 根据权利要求 24或 25所述的装置, 其特征在于, 所述 WLAN选择信 息还包括信号质量条件, 所述选择模块用于:
根据所述优先级信息和所述信号质量条件为所述 UE选择 WLAN网络, 其 中, 所述 UE在所述选择的 WLAN网络中接收的信号满足所述信号质量条件。
29、 根据权利要求 28所述的装置, 其特征在于, 所述 WLAN选择信息还 包含所述至少两个 WLAN网络的信号质量信息;
所述选择模块用于:
根据所述至少两个 WLAN网络的优先级信息和所述至少两个 WLAN网络 的信号质量信息, 选择所述至少两个 WLAN网络中优先级最高且信号质量最好 的 WLAN网给。
30、 根据权利要求 24所述的装置, 其特征在于, 所述 WLAN选择信息还 包括位置条件, 所述选择模块用于:
根据所述优先级信息和所述位置条件为所述 UE选择 WLAN网络, 其中所 述 UE位于所述位置条件中指示的区域之内或者位于所述位置条件中指示的区 域之外。
31、 根据权利要求 24至 30任一所述的装置, 其特征在于, 所述 WLAN选 择信息还包含服务提供商的域名称;
所述发送模块用于:
指示所述 UE接入所述服务提供商提供的所述 WLAN。
32、 根据权利要求 24至 30任一所述的装置, 其特征在于, 所述获取模块 包括: 术支持节点 SGSN发送的 WLAN选择信息; 或者,
第二获取单元, 用于在与策略和计费规则功能 PCRF或接入网络发现与选 择功能 ANDSF之间建立连接后, 接收所述 PCRF或 ANDSF发送的 WLAN选 择信息。
33、 根据权利要求 24至 32中任一项所述的装置, 其特征在于, 所述优先 级信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
34、 一种网络选择的装置, 其特征在于, 所述装置包括:
接收模块, 用于接收蜂窝接入网接入节点发送的指示, 所述指示中包括所 述蜂窝接入网接入节点根据无线局域网 WLAN选择信息所选择的 WLAN网络 的信息;
接入模块, 用于根据所述接收模块接收的所述指示接入所述 WLAN网络; 其中, 所述 WLAN选择信息包含优先级信息, 所述优先级信息用于指示对 于所述 UE采用 WLAN接入优先于采用所述蜂窝接入网接入。
35、 根据权利要求 34所述的装置, 其特征在于, 所述指示中还包括: 服务 提供商的域名称;
所述接入模块用于:
根据所述指示中的所述 WLAN网络的信息和所述域名称, 接入所述服务提 供商提供的所述 WLAN。
36、 根据权利要求 34或 35所述的装置, 其特征在于, 所述优先级信息包 含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的 接入技术类型的优先级。
37、 一种网络选择的装置, 其特征在于, 所述装置包括:
获取模块, 用于获取无线局域网 WLAN选择信息, 所述 WLAN选择信息 包含优先级信息, 所述优先级信息用于指示对于用户设备 UE采用 WLAN接入 优先于采用所述蜂窝接入网接入;
发送模块, 用于将所述 WLAN选择信息发送给蜂窝接入网接入节点, 所述 WLAN选择信息用于所述蜂窝接入网接入节点为所述 UE选择一个 WLAN网络 并指示所述 UE接入所选择的 WLAN网络。
38、 根据权利要求 37所述的装置, 其特征在于, 所述获取模块包括: 第一获取单元,用于接收归属用户服务器 HSS发送的所述 UE的签约信息, 从所述签约信息中获取 WLAN选择信息; 或者,
第二获取单元, 用于接收策略和计费规则功能 PCRF或接入网络发现与选 择功能 ANDSF发送的 WLAN选择信息; 或者,
第三获取单元, 用于在所述 UE发生切换时或移动到新的位置后接收老的 MME或 SGSN发送的 WLAN选择信息。
39、 根据权利要求 37所述的装置, 其特征在于, 所述发送模块包括: 第一发送单元, 用于在所述 UE从空闲态转为连接态时,通过初始上下文建 立请求消息将所述 WLAN选择信息发送给蜂窝基站; 或者,
第二发送单元, 用于通过无线接入承载分配请求消息将所述 WLAN选择信 息发送给蜂窝控制器; 或者,
第三发送单元, 用于通过承载修改请求消息, 将所述 WLAN选择信息发送 给所述蜂窝接入网接入节点; 或者,
第四发送单元, 用于通过下行非接入层 NAS传输消息将所述 WLAN选择 信息发送给所述蜂窝接入网接入节点; 或者,
第五发送单元, 用于通过 UE上下文修改请求消息, 将所述 WLAN选择信 息发送给所述蜂窝接入网接入节点。
40、 根据权利要求 37所述的装置, 其特征在于, 所述装置还包括: 修改模块, 用于在所述获取模块获取所述 WLAN选择信息之后, 根据本地 的策略对所述 WLAN选择信息进行修改;
相应地, 所述发送模块用于:
将修改后的 WLAN选择信息发送给蜂窝接入网接入节点。
41、 根据权利要求 37至 40中任一项所述的装置, 其特征在于, 所述优先 级信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
42、 一种网络选择的装置, 其特征在于, 所述装置包括:
生成模块, 用于生成无线局域网 WLAN选择信息, 所述 WLAN选择信息 包含优先级信息, 所述优先级信息用于指示对于用户设备 UE采用 WLAN接入 优先于采用所述蜂窝接入网接入;
发送模块, 用于将所述生成模块生成的所述 WLAN选择信息发送给蜂窝接 入网接入节点, 所述 WLAN选择信息用于所述蜂窝接入网接入节点为所述 UE 选择一个 WLAN网络并指示所述 UE接入所选择的 WLAN网络。
43、 根据权利要求 42所述的装置, 其特征在于, 所述发送模块包括: 建立连接单元, 用于与蜂窝接入网接入节点之间建立连接;
第一发送单元, 通过已建立的连接将所述 WLAN选择信息发送给所述蜂窝 接入网接入节点;
或者, 所述发送模块包括:
第二发送单元, 用于将所述 WLAN选择信息通过分组数据网络网关 PGW 持节点 SGSN, 由所述 MME或 SGSN将所述 WLAN选择信息发送给所述蜂窝 接入网接入节点; 或, 将所述 WLAN选择信息通过网关通用分组无线业务支持 节点 GGSN 将所述 WLAN 选择信息发送给服务通用分组无线业务支持节点 SGSN, 由所述 SGSN将所述 WLAN选择信息发送给所述蜂窝接入网接入节点。
44、 根据权利要求 43所述的装置, 其特征在于, 所述建立连接单元用于: 在所述 UE的网际协议连通性接入网络 IP-CAN会话建立后,向所述蜂窝接 入网接入节点发送连接建立消息, 与所述蜂窝接入网接入节点建立连接; 或者, 接收所述蜂窝接入网接入节点在所述 UE从空闲态转为连接态后发送的连 接建立消息, 与所述蜂窝接入网接入节点建立连接。
45、 根据权利要求 42所述的装置, 其特征在于, 所述生成模块用于: 根据所述 UE的签约信息、 业务使用情况、位置变化信息、 账户信息或网络 策略中的至少一种, 生成 WLAN选择信息。
46、 根据权利要求 42至 45中任一项所述的装置, 其特征在于, 所述优先 级信息包含: 接入所述蜂窝接入网的接入技术类型的优先级, 和 /或, 接入所述 WLAN的接入技术类型的优先级。
47、 一种网络选择的系统, 其特征在于, 所述系统包括: 蜂窝接入网接入 节点、 以及用户设备 UE;
所述蜂窝接入网接入节点包括如权利要求 24至 33中任一项所述的装置; 所述 UE包括如权利要求 34或 36所述的装置。
48、 一种网络选择的系统, 其特征在于, 所述系统包括: 蜂窝接入网接入 节点、 用户设备 UE、 以及移动管理网元;
所述蜂窝接入网接入节点包括如权利要求 24至 33中任一项所述的装置; 所述 UE包括如权利要求 34或 36所述的装置;
所述移动管理网元包括如权利要求 37至 41中任一项所述的装置。
49、 一种网络选择的系统, 其特征在于, 所述系统包括: 蜂窝接入网接入 节点、 用户设备 UE、 以及策略和计费规则功能 PCRF或接入网络发现与选择功 能 ANDSF;
所述蜂窝接入网接入节点包括如权利要求 24至 33中任一项所述的装置; 所述 UE包括如权利要求 34或 36所述的装置;
所述 PCRF或 ANDSF包括如权利要求 42至 46中任一项所述的装置。
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