WO2015039345A1 - 一种选择接入网络的方法及用户设备 - Google Patents

一种选择接入网络的方法及用户设备 Download PDF

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Publication number
WO2015039345A1
WO2015039345A1 PCT/CN2013/083988 CN2013083988W WO2015039345A1 WO 2015039345 A1 WO2015039345 A1 WO 2015039345A1 CN 2013083988 W CN2013083988 W CN 2013083988W WO 2015039345 A1 WO2015039345 A1 WO 2015039345A1
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WIPO (PCT)
Prior art keywords
user equipment
ran
service
network
policy
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Application number
PCT/CN2013/083988
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English (en)
French (fr)
Inventor
王可
曾清海
郭轶
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.)
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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/CN2013/083988 priority Critical patent/WO2015039345A1/zh
Priority to CN201380003043.9A priority patent/CN104704904B/zh
Publication of WO2015039345A1 publication Critical patent/WO2015039345A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for selecting an access network and a user equipment. Background technique
  • ANDSF Access Network Discovery and Selection Function
  • the UE can select the most suitable access network according to the characteristics of the current service, thereby implementing effective offloading of the data service, but the entity of the offload decision is on the UE side, and the ANDSF only provides auxiliary information and decision Required policy information.
  • the UE can also use the access network RAN criteria to combine the ANDSF policy for network selection and offloading.
  • 3GPP also introduces a RAN-controlled offload unloading mechanism on the Radio Access Network (RAN) side. That is, the RAN controls the network selection and offloading of the UE by using Radio Resource Control (RRC) signaling through the state of the current network and the information reported by the user equipment UE. Since the UE is controlled by dedicated signaling, the RAN control method requires the UE to be in an RRC connection (RRC_CONNECTED) state.
  • RRC_CONNECTED Radio Resource Control
  • the network selection and the service offloading and unloading mechanism of the RAN control are relatively simple. The UE only needs to report the measurement information such as the WLAN according to the configuration of the network, and then the network combines the load, the signal strength, the user policy and the like to determine the user equipment.
  • the traffic is offloaded, and then the UE is indicated by RRC signaling, and the UE only needs to operate according to the indication. Because the RAN can obtain the radio resource management information of the entire network, its performance is better than that of the UE controlled operation.
  • the disadvantage of the RAN control method is that the UE needs to be in the RRC connected state.
  • the UE uses the RAN control method in RRC_CONNECTED (RRC Connected State); - -
  • the RRCJDLE state (RRC idle state) uses a UE-controlled method such as an ANDSF policy or a RAN criterion.
  • This kind of fusion scheme is actually that the UE has two sets of network selection control strategies in the connected state and the idle state, so that the following problem occurs, for example:
  • the UE is in an RRC connected state, and the service flow is offloaded to the WLAN according to the signaling indicated by the RAN for transmission;
  • the UE becomes controlled by the ANDSF or RAN mode, and the result of the ANDSF policy or the RAN method decision may be opposite to the indication of the RAN control, that is, the result of the judgment is that the UE service needs to be offloaded to the cellular network for transmission. Then the UE re-initiates the RRC connection, enters the RRC connected state, and then migrates the service from the WLAN to the cellular for transmission;
  • the UE Since the UE enters the RRC connected state, it becomes RAN control again, and then the RAN instructs the UE to move all the services back to the WLAN, so that the ping-pong problem in which the UE service frequently migrates between the WLAN and the cellular has occurred.
  • the embodiment of the invention provides a method for selecting an access network and a user equipment, which can accurately select a network to be accessed when the UE transitions in a connection state.
  • a method for selecting an access network including:
  • the first service of the user equipment in the WLAN of the wireless local area network determines whether the execution condition of the interoperability policy is met
  • the user equipment uses an interworking policy to select a network for the first service to access;
  • the user equipment transmits the first service on the WLAN.
  • the method further includes:
  • the user equipment is sent according to a definition of a communication protocol of the RAN or by the RAN - - Dedicated signaling, broadcast messages acquire the execution conditions of the interoperability policy.
  • the method further includes:
  • the user equipment When the user equipment initiates the second service after the user equipment enters the idle state of the RAN, the user equipment uses the interworking policy to select a network for accessing the second service.
  • the method further includes:
  • the user equipment When the user equipment enters the connected state of the RAN, when the user equipment initiates the third service, the user equipment receives an indication of the third service by the RAN, and the third service access station The network specified by the RAN.
  • the method further includes:
  • the user equipment When the user equipment enters the idle state for more than the set time, the user equipment adopts the interworking policy to start the second service after the first service and the user equipment enter the idle state of the RAN. Select the network to access.
  • the method further includes:
  • the user equipment acquires the set time according to a definition of a communication protocol of the RAN or a dedicated signaling or broadcast message sent by the RAN.
  • the user equipment adopts an interoperation policy as the first The network selected by the service to access, including:
  • the user equipment sends a report indication message to the RAN; the user equipment receives the response message of the RAN, and the user equipment adopts the interoperation policy according to the response message.
  • the first service selects the network to access, or the network indicated by the access response message.
  • the interoperation policy includes an access network discovery and selection function entity ANDSF policy and/or a RAN criterion.
  • the execution conditions of the interoperability strategy include at least one of the following:
  • the interoperability policy if the WLAN is unavailable or the signal strength of the WLAN is below a first threshold or the load of the WLAN is greater than a second threshold; or
  • a user equipment including:
  • a determining unit configured to determine, when the user equipment enters an idle state, that the first service of the user equipment transmitted over the WLAN in the wireless local area network determines whether an execution condition of the interoperability policy is met;
  • a first selecting unit configured to: if the result of the determining is yes, use an interworking policy to select a network for accessing the first service;
  • a transmission unit configured to: if the result of the determination is no, transmit the first service on the WLAN.
  • the user equipment further includes:
  • a first acquiring unit configured to acquire an execution condition of the interoperation policy according to a definition of a communication protocol of the RAN or a dedicated signaling or a broadcast message sent by the RAN.
  • the user equipment further includes:
  • a second selecting unit configured to: when the user equipment initiates the second service after the user equipment enters the idle state of the RAN, select, by using the interworking policy, the network accessed by the second service.
  • the user equipment further includes:
  • An access unit configured to: when the user equipment enters a connection state of the RAN, when the user equipment initiates a third service, receiving an indication of the third service by the RAN, and using the third service - Access to the network specified by the RAN.
  • the user equipment further includes:
  • a third selecting unit configured to: after the time when the user equipment enters an idle state exceeds a set time, using the interworking policy to initiate the first service and the user equipment after entering an idle state of the RAN
  • the second service selects the network to access.
  • the user equipment further includes:
  • a second acquiring unit configured to acquire the set time according to a definition of a communication protocol of the RAN or a dedicated signaling, a broadcast message sent by the RAN.
  • the first selecting unit includes:
  • a sending unit configured to send a report indication message to the RAN if the result of the determination is yes, and a receiving unit, configured to receive a response message of the RAN;
  • an execution unit configured to select, by the user equipment, the network selected for the first service by using the interworking policy according to the response message, or the network indicated by the access response message.
  • the interoperation policy includes access network discovery and selection Entity ANDSF policy and/or RAN criteria.
  • the execution conditions of the interoperability strategy include at least one of the following:
  • the interoperability policy if the WLAN is unavailable or the signal strength of the WLAN is below a first threshold or the load of the WLAN is greater than a second threshold; or
  • a user equipment comprising: an input device, an output device, a memory, and a processor, wherein the memory stores a set of program codes, and the processor is configured to call the memory to store Program code for doing the following:
  • the first service of the user equipment in the WLAN of the wireless local area network determines whether the execution condition of the interoperability policy is met
  • the user equipment uses an interworking policy to select a network for the first service to access;
  • the user equipment transmits the first service on the WLAN.
  • the processor performs, when the user equipment enters an idle state in the radio access network, the first service that is sent by the user equipment in the WLAN on the WLAN, and determines whether the interoperability policy is met.
  • the user equipment is further configured to: obtain the execution condition of the interoperation policy according to the definition of the communication protocol of the RAN or the dedicated signaling and broadcast message sent by the RAN.
  • the processor is further configured to perform the following operations:
  • the user equipment When the user equipment initiates the second service after the user equipment enters the idle state of the RAN, the user equipment uses the interworking policy to select a network for accessing the second service.
  • the processor is further configured to perform the following operations:
  • the user equipment When the user equipment enters the connected state of the RAN, when the user equipment initiates the third service, the user equipment receives an indication of the third service by the RAN, and the third service access station The network specified by the RAN.
  • the processor is further configured to perform the following operations:
  • the user equipment When the user equipment enters the idle state for more than the set time, the user equipment adopts the interworking policy to start the second service after the first service and the user equipment enter the idle state of the RAN. Select the network to access.
  • the processor when the processor performs the time when the user equipment enters an idle state for more than a set time, the user equipment is also used to perform the following operations:
  • the user equipment acquires the set time according to a definition of a communication protocol of the RAN or a dedicated signaling or broadcast message sent by the RAN.
  • the processor performs, if the result of the determining is yes, the user equipment adopts an interoperation policy
  • the operation of selecting a network for accessing the first service includes:
  • the user equipment sends a report indication message to the RAN; the user equipment receives the response message of the RAN, and the user equipment adopts the interoperation policy according to the response message.
  • the first service selects the network to access, or the network indicated by the access response message.
  • the interoperation policy includes access network discovery and selection Entity ANDSF policy and/or RAN criteria.
  • the execution conditions of the interoperability strategy include at least one of the following:
  • the interoperability policy if the WLAN is unavailable or the signal strength of the WLAN is below a first threshold or the load of the WLAN is greater than a second threshold; or
  • FIG. 1 is a flow chart of an embodiment of a method for selecting an access network according to the present invention
  • FIG. 2 is a flow chart of another embodiment of a method for selecting an access network according to the present invention
  • FIG. 3 is a flowchart of still another embodiment of a method for selecting an access network according to the present invention
  • FIG. 5 is a schematic structural diagram of an embodiment of a user equipment according to the present invention
  • FIG. 6 is a schematic structural diagram of another embodiment of a user equipment according to the present invention.
  • FIG. 7 is a schematic structural diagram of still another embodiment of a user equipment according to the present invention.
  • FIG. 8 is a schematic structural diagram of still another embodiment of a user equipment according to the present invention.
  • FIG. 9 is a schematic structural diagram of still another embodiment of a user equipment according to the present invention. detailed description
  • FIG. 1 is a flow chart of one embodiment of a method of selecting an access network in accordance with the present invention. As shown in Figure 1, the method includes the following steps:
  • Step S101 when the user equipment enters the idle state of the radio access network, the first service of the user equipment in the wireless local area network WLAN, determines whether the execution condition of the interoperability policy is met, and if yes, proceeds to step S102; Otherwise, go to step S103.
  • the user equipment is controlled by the RAN.
  • the service of the user equipment is determined by the RAN to access which network, but the user equipment must be in the RAN connection state.
  • the user equipment cannot receive the RRC signaling indicating which network the user equipment accesses because it is not connected to the RAN, and the service that is already transmitted by the RAN on the WLAN before the user equipment enters the idle state, the user The device must make a network selection decision according to certain conditions, otherwise the ping-pong problem in the prior art will occur.
  • the user equipment first determines whether - - satisfying the execution condition of the interoperability policy, for example, the execution condition of the interoperation policy may be that the WLAN is unavailable, or the signal strength of the WLAN is lower than the first threshold, or the load of the WLAN is greater than the second threshold, or Receiving a broadcast indication of the RAN, instructing the user equipment to use the interoperation policy.
  • the execution condition of the interoperation policy may be that the WLAN is unavailable, or the signal strength of the WLAN is lower than the first threshold, or the load of the WLAN is greater than the second threshold, or Receiving a broadcast indication of the RAN, instructing the user equipment to use the interoperation policy.
  • Step S102 The user equipment uses an interworking policy to select a network to access for the first service.
  • step S101 If it is determined in step S101 that the execution condition of the interoperability policy is currently met, the network selection operation is performed according to the interoperation policy, and the access network may be selected for the service by using the ANDSF policy and/or the RAN criterion, such as a cellular network.
  • Step S103 The user equipment transmits the first service on the WLAN.
  • step S101 If it is determined in step S101 that the execution condition of the interoperation policy is not currently met, the user equipment continues to transmit the service on the WLAN according to the indication of the RAN.
  • the user equipment For the service indicated by the RAN to be transmitted by the RAN when the RAN enters the idle state, when it is judged that the execution condition of the interoperation policy is currently met, according to the interoperation policy, the user equipment selects to access the cellular network, and does not select the network condition.
  • WLAN Wireless Local Area Network
  • the user equipment when the connection state is switched, the user equipment clears the network whose service is selected to access, and can accurately access the network.
  • FIG. 2 is a flow chart of another embodiment of a method of selecting an access network in accordance with the present invention. As shown in the figure, the method includes the following steps:
  • Step S201 The user equipment acquires an execution condition of the interoperation policy according to the definition of the communication protocol of the radio access network RAN or the dedicated signaling and broadcast message sent by the RAN.
  • the user equipment may pre-receive and store the execution conditions of the interoperation policy transmitted according to the definition of the communication protocol of the RAN or the dedicated signaling or broadcast message transmitted by the RAN.
  • the interoperability strategy can include:
  • ANDSF policy proposes to transmit a particular traffic flow over a cellular network or on a particular WLAN, or to prioritize a particular service selection network.
  • RAN criterion refers to some service offloading criteria defined by the RAN.
  • the UE meets the threshold defined by the RAN, the corresponding service flow is triggered to be offloaded to a specific WLAN or cellular network. For example, when the signal strength of the UE in the cellular network is higher than a certain threshold, the specific traffic of the UE is triggered from the WLAN. - - Diverted to the cellular network.
  • the offloading of a UE's specific traffic from WLAN/cellular to cellular/WLAN can be achieved by:
  • the RAN criteria are defined based on the granularity of the Access Packet Network (APN), i.e., the RAN can define a set of traffic offload criteria for a particular APN that are only used for traffic flows associated with the APN.
  • the APN is related to the attributes of the service flow. For example, some APN-associated services can only be transmitted on the cellular core network, and some APN-associated services can be offloaded to the WLAN for transmission.
  • the RAN criterion corresponding to the APN associated with the service flow may be viewed, and then the operation is determined according to the criteria.
  • ANDSF and RAN criteria This interoperability strategy can be seen as a combination of the first two methods.
  • the RAN criterion is used to determine whether it is necessary to trigger traffic offload (from cellular to WLAN or from WLAN to cellular), and which services are specific. The flow can be shunted and judged by the ANDSF strategy.
  • Step S202 when the user equipment enters the idle state, the first service of the user equipment in the wireless local area network WLAN is determined whether the execution condition of the interoperability policy is met, and if yes, go to step S203; Otherwise, go to step S204.
  • Step S203 The user equipment uses an interworking policy to select a network to access for the first service.
  • Step S204 The user equipment transmits the first service on the WLAN.
  • Steps S202 to S204 are the same as steps S101 to S103 of the foregoing embodiment, and are not further described herein.
  • the ANDSF can provide the following three types of information for the user equipment to select an appropriate network for access:
  • This policy specifies whether to allow inter-system mobility and select the most appropriate access system for user equipment access to the Evolved Packet Core (EPC) system.
  • the policy may be provided to the UE, and the ANDSF may also modify the mobility policy between the systems based on the operator policy or based on the network discovery and selection information sent by the UE.
  • the ANDSF may provide a list of access networks of all access systems in the vicinity of the UE.
  • the access network information may include an access technology type (such as WLAN or WiMAX) and a wireless access network identifier (Service Set Identifier (SSID) of the WLAN).
  • SSID Service Set Identifier
  • the ANDSF can provide the user with a list of inter-system routing policies, including some filtering rules, specifying whether a particular service flow or a specific Access Point Name (APN) is allowed to access an access system. And when the user performs data routing, according to the priority of the access system defined by the routing policy, the most suitable access technology or APN is selected for the service.
  • APN Access Point Name
  • the user equipment can separately select the accessed network by using the RAN criterion, and the RAN criterion includes the RAN auxiliary information, and the user equipment can select the accessed network in combination with the RAN auxiliary information and the ANDSF policy, for example, the RAN provides some selection and networking for the user equipment.
  • the auxiliary parameters such as the decision threshold (RAN/WLAN signal strength, RAN/WLAN load), the network selection indication, etc., then the user equipment determines how to select the network and perform the offload according to the measurement result and the ANDSF policy.
  • the auxiliary information provided by the RAN includes two decision thresholds X (WLAN signal strength) and Y (WLAN load), and the corresponding ANDSF policy is: if the currently detected WLAN signal strength of the UE is greater than X, and detected If the WLAN load is less than Y, the UE's service flow is offloaded to the WLAN. Then, according to the auxiliary information provided by the RAN, the UE can determine when to offload the service from the RAN to the WLAN according to the ANDSF policy.
  • X WLAN signal strength
  • Y WLAN load
  • Step S205 When the user equipment initiates the second service after the user equipment enters the idle state of the RAN, the user equipment uses the interworking policy to select a network for accessing the second service.
  • step S205 after the user equipment enters the idle state of the RAN, if the user equipment has a new service initiated, the user equipment selects the access network for the service by using the ANDSF policy and/or the RAN criterion. For new services, it is clear that the interoperability strategy is used to select the access network, and the ping-pong problem in the network selection decision can also be avoided to avoid confusion.
  • Step S206 when the user equipment enters the connected state of the RAN, when the user equipment initiates a third service, the user equipment receives an indication of the third service by the RAN, and the third service is used. Access to the network specified by the RAN.
  • the user equipment After the user equipment enters the RAN connection state by the idle state of the RAN, when the access network needs to be selected for any service, the service is preferentially accessed according to the RAN indication, because the RAN can obtain the radio resource management information of the entire network. Compared with the access network operation controlled by the UE, the performance is better, and once the service is specified to access the network according to the indication of the RAN, the ping-pong problem in the network selection decision can be avoided, and the operation disorder is avoided. .
  • the method for selecting an access network provided by the embodiment of the present invention, when the connection state is switched, the user equipment can clearly access the network for the network whose services are selected for various services, and avoid the network selection decision. Ping pong problem, to avoid the situation of operational confusion.
  • FIG. 3 is a flow chart of still another embodiment of a method for selecting an access network according to the present invention. As shown in Figure 3, the method includes the following steps:
  • Step S301 The user equipment acquires an execution condition of the interoperation policy according to the definition of the communication protocol of the radio access network RAN or the dedicated signaling and broadcast message sent by the RAN.
  • Step S302 The user equipment acquires a set time according to a definition of a communication protocol of the RAN or a dedicated signaling and a broadcast message sent by the RAN, and starts timing.
  • Step S303 when the user equipment enters the idle state, the first service of the user equipment in the wireless local area network WLAN is determined whether the execution condition of the interoperability policy is met, and if yes, the process goes to step S304; Otherwise, go to step S305.
  • Step S304 The user equipment uses an interworking policy to select a network to access for the first service.
  • Step S305 The user equipment transmits the first service on the WLAN.
  • Step S306 it is judged whether the set time has been exceeded, and if yes, the process goes to step S307; otherwise, the process goes to step S303.
  • Step S307 The user equipment uses the interworking policy to select a network for the second service initiated by the first service and the user equipment after entering the idle state of the RAN.
  • Step S308 when the user equipment enters the connection state of the RAN, when the user equipment initiates a third service, the user equipment receives an indication of the third service by the RAN, and the third service is used. Access to the network specified by the RAN.
  • the RAN indicates that the service transmitted by the WLAN needs to determine, according to the execution condition of the interoperation policy, which network selection policy is selected to access the network.
  • a set time, beyond which the interworking policy is used to select the network to access; and the new service initiated after the set time of entering the idle state of the RAN also uses the interoperability policy to select the accessed network.
  • the user equipment can also receive and store in advance the set time acquired according to the definition of the communication protocol of the RAN or the dedicated signaling or broadcast message transmitted by the RAN.
  • the user equipment is switched in a connection state. - -
  • the network that selects access according to the specified network selection policy for various services it can accurately access the network, avoid the ping-pong problem in the network selection decision, and avoid the situation of disordered operation;
  • the network selection policy is determined for each service, and the set time is exceeded.
  • the network that selects the access policy for these services by using the interoperation policy uniformly can reduce the time when the network selection policy is determined. The amount of work.
  • FIG. 4 is a flow chart of still another embodiment of a method for selecting an access network according to the present invention. As shown in Figure 4, the method includes the following steps:
  • Step S401 The user equipment acquires an execution condition of the interoperation policy according to the definition of the communication protocol of the radio access network RAN or the dedicated signaling and broadcast message sent by the RAN.
  • Step S402 when the user equipment enters the idle state, the first service of the user equipment in the wireless local area network WLAN is determined whether the execution condition of the interoperability policy is met, and if yes, go to step S403; Otherwise, go to step S404.
  • Step S403 The user equipment sends a report indication message to the RAN.
  • Step S404 The user equipment transmits the first service on the WLAN.
  • Step S405 The user equipment receives the response message of the RAN, and the user equipment uses the interworking policy to select a network for accessing the first service or a network indicated by the access response message according to the response message. .
  • Step S406 When the user equipment initiates the second service after the user equipment enters the idle state of the RAN, the user equipment uses the interworking policy to select a network for accessing the second service.
  • Step S407 When the user equipment enters the connected state of the RAN, when the user equipment initiates a third service, the user equipment receives an indication of the third service by the RAN, and the third service is used. Access to the network specified by the RAN.
  • the step S203 includes the step S403 and the step S405, and the RAN indicates that the service transmitted in the WLAN is set with certain restrictions before entering the idle state of the RAN.
  • the condition is the execution condition in the interoperation policy in the foregoing embodiment.
  • the user equipment sends a report message to the RAN, where the report message is used to indicate that the user equipment cannot perform the RAN indication to the service on the WLAN.
  • the indication of the transmission specifically, the report message needs to include at least: the reason for reporting, that is, which qualification condition is satisfied, or specific parameters such as signal strength and load; - - Point indication (eg BSSID, SSID).
  • the RAN determines, according to the report message, whether it is necessary to indicate a new network selection operation for the user equipment, that is, an interworking policy, such as an ANDSF policy and/or a RAN criterion, for selecting a network for accessing the service, or directly indicating the accessed network, and
  • an interworking policy such as an ANDSF policy and/or a RAN criterion
  • the indication is sent to the user equipment in the response message, and the user equipment selects an access network for the service according to the response message, or accesses the network indicated by the response message.
  • the user equipment when the connection state is switched, the user equipment can clearly access the network selected according to the specified network selection policy for various services, and can accurately access the network to avoid selection.
  • the ping-pong problem in the decision-making of the network avoids the situation of operational confusion.
  • FIG. 5 is a schematic structural diagram of an embodiment of a user equipment according to the present invention. As shown in FIG. 5, the user equipment 1000 includes:
  • the determining unit 11 is configured to determine, when the user equipment enters the idle state of the radio access network, the first service that is transmitted by the user equipment in the WLAN of the wireless local area network, and determine whether the execution condition of the interoperability policy is met.
  • the user equipment is controlled by the RAN.
  • the service of the user equipment is determined by the RAN to access which network, but the user equipment must be in the RAN connection state.
  • the user equipment cannot receive the RRC signaling indicating which network the user equipment accesses because it is not connected to the RAN, and the service that is already transmitted by the RAN on the WLAN before the user equipment enters the idle state, the user The device must make a network selection decision according to certain conditions, otherwise the ping-pong problem in the prior art will occur.
  • the execution condition of the interoperation policy and the interoperation policy is set, and the user equipment first determines whether the execution condition of the interoperation policy is met.
  • the execution condition of the interoperation policy may be that the WLAN is unavailable, or the signal strength of the WLAN is lower than the first.
  • the first selecting unit 12 is configured to: if the result of the determining is yes, use an interworking policy to select a network for the first service to access.
  • the first selecting unit 12 When the determining unit 11 determines that the execution condition of the interoperability policy is currently satisfied, the first selecting unit 12 performs a network selection operation according to the interworking policy, and may select an access network, such as a cellular, by using an ANDSF policy and/or a RAN criterion. Net and so on.
  • the transmitting unit 13 is configured to: if the result of the determination is no, transmit the first service on the WLAN. - - When the judging unit 11 judges that the execution condition of the interoperation policy is not currently satisfied, the transmission unit 13 continues to transmit the service on the WLAN along with the indication of the RAN.
  • the user equipment For the service indicated by the RAN to be transmitted by the RAN when the RAN enters the idle state, when it is judged that the execution condition of the interoperation policy is currently met, according to the interoperation policy, the user equipment selects to access the cellular network, and does not select the network condition.
  • WLAN Wireless Local Area Network
  • the user equipment when the connection state is changed, the user equipment clears the network that the service selects to access, and can access the network accurately.
  • FIG. 6 is a schematic structural diagram of another embodiment of a user equipment according to the present invention. As shown in FIG. 6, the user equipment 2000 includes:
  • the first obtaining unit 21 is configured to acquire an execution condition of the interoperation policy according to a definition of a communication protocol of the radio access network RAN or a dedicated signaling and a broadcast message sent by the RAN.
  • the first obtaining unit 21 may pre-receive and store in the user equipment the execution condition of the interoperation policy transmitted according to the definition of the communication protocol of the RAN or the dedicated signaling or broadcast message transmitted by the RAN.
  • the interoperability strategy can include:
  • ANDSF policy proposes to transmit a particular traffic flow over a cellular network or on a particular WLAN, or to prioritize a particular service selection network.
  • RAN criterion refers to some service offloading criteria defined by the RAN.
  • the UE meets the threshold defined by the RAN, the corresponding service flow is triggered to be offloaded to a specific WLAN or cellular network. For example, when the signal strength of the UE in the cellular network is higher than a certain threshold, the specific service flow of the triggering UE is offloaded from the WLAN to the cellular network.
  • the offloading of a UE's specific traffic from WLAN/cellular to cellular/WLAN can be achieved by:
  • the RAN criteria are defined based on the granularity of the Access Packet Network (APN), ie the RAN may define a set of traffic offload criteria for a particular APN, these splitting criteria being used only for traffic flows associated with the APN.
  • the APN is related to the attributes of the service flow. For example, some APN-associated services can only be transmitted on the cellular core network, and some APN-associated services can be offloaded to the WLAN for transmission.
  • the user can view the APN corresponding to the service flow.
  • the RAN criterion then judge how to operate according to the criteria.
  • ANDSF and RAN criteria This interoperability strategy can be seen as a combination of the first two methods.
  • the RAN criterion is used to determine whether it is necessary to trigger traffic offload (from cellular to WLAN or from WLAN to cellular), and which services are specific. The flow can be shunted and judged by the ANDSF strategy.
  • the determining unit 22 is configured to determine, when the user equipment enters the idle state, the first service that is sent by the user equipment in the WLAN of the wireless local area network, and determine whether the execution condition of the interoperability policy is met.
  • the first selecting unit 23 is configured to: if the result of the determination is yes, use an interworking policy to select a network for the first service to access.
  • the transmitting unit 24 is configured to: if the result of the determination is no, transmit the first service on the WLAN.
  • the functions of the determining unit 22, the first selecting unit 23, and the transmitting unit 24 are the same as those of the determining unit 11, the first selecting unit 12, and the transmitting unit 13 of the foregoing embodiment, and are not described herein again.
  • the ANDSF can provide the following three types of information for the user equipment to select an appropriate network for access:
  • This policy specifies whether to allow inter-system mobility and select the most appropriate access system for user equipment access to the Evolved Packet Core (EPC) system.
  • the policy may be provided to the UE, and the ANDSF may also modify the mobility policy between the systems based on the operator policy or based on the network discovery and selection information sent by the UE.
  • the ANDSF may provide a list of access networks of all access systems in the vicinity of the UE.
  • the access network information may include an access technology type (such as WLAN or WiMAX) and a wireless access network identifier (Service Set Identifier (SSID) of the WLAN).
  • an access technology type such as WLAN or WiMAX
  • SSID Service Set Identifier
  • the ANDSF can provide the user with a list of inter-system routing policies, including some filtering rules, specifying a specific service flow or a specific Access Point Name (APN), whether to allow access to an access system. And when the user performs data routing, according to the priority of the access system defined by the routing policy, the most suitable access technology or APN is selected for the service.
  • inter-system routing policies including some filtering rules, specifying a specific service flow or a specific Access Point Name (APN), whether to allow access to an access system.
  • API Access Point Name
  • the user equipment may separately select the accessed network by using the RAN criterion, and the RAN criterion includes RAN auxiliary information, and the user equipment may select the accessed network by combining the RAN auxiliary information and the ANDSF policy.
  • the RAN provides some auxiliary parameters for the user equipment for network selection and offloading, such as decision threshold (RAN/WLAN signal strength, RAN/WLAN load), network selection indication, etc., and then the user equipment according to the measurement result and the ANDSF policy To determine how to select the network and divert.
  • the auxiliary information provided by the RAN includes two decision thresholds X (WLAN signal strength) and Y (WLAN load), and the corresponding ANDSF policy is: if the currently detected WLAN signal strength of the UE is greater than X, and detected If the WLAN load is less than Y, the UE's service flow is offloaded to the WLAN. Then, according to the auxiliary information provided by the RAN, the UE can determine when to offload the service from the RAN to the WLAN according to the ANDSF policy.
  • X WLAN signal strength
  • Y WLAN load
  • the second selecting unit 25 is configured to: when the user equipment enters the idle state of the RAN, when the user equipment initiates the second service, use the interworking policy to select a network for the second service to access.
  • the user equipment After the user equipment enters the idle state of the RAN, if the user equipment has a new service initiated, the user equipment selects the access network for the service by using the ANDSF policy and/or the RAN criterion. For new services, it is clear that the interoperability strategy is used to select the access network, and the ping-pong problem in the network selection decision can be avoided to avoid confusion.
  • the access unit 26 is configured to: when the user equipment enters a connection state of the RAN, when the user equipment initiates a third service, receiving an indication of the third service by the RAN, where the third service is Access to the network specified by the RAN.
  • the service is preferentially accessed according to the RAN indication, because the RAN can obtain the radio resource management information of the entire network. Compared with the access network operation controlled by the UE, the performance is better, and once the service is specified to access the network according to the indication of the RAN, the ping-pong problem in the network selection decision can be avoided, and the operation disorder is avoided. .
  • the user equipment when the connection state is switched, the user equipment that is selected to access the network for various services can accurately access the network, avoiding the ping-pong problem in the network selection decision, and avoiding Operational confusion.
  • FIG. 7 is a schematic structural diagram of still another embodiment of a user equipment according to the present invention. As shown in FIG. 7, the user equipment 3000 includes:
  • the first obtaining unit 31 is configured to acquire an execution condition of the interoperation policy according to a definition of a communication protocol of the radio access network RAN or a dedicated signaling and a broadcast message sent by the RAN.
  • a second obtaining unit 32 configured to acquire a set time according to a definition of a communication protocol of the RAN or a dedicated signaling or a broadcast message sent by the RAN.
  • the determining unit 33 is configured to determine, when the user equipment enters the idle state, the first service that is sent by the user equipment in the WLAN of the wireless local area network, and determine whether the execution condition of the interoperability policy is met.
  • the first selecting unit 34 is configured to: if the result of the determining is yes, use an interworking policy to select a network for the first service to access.
  • the transmitting unit 35 is configured to: if the result of the determination is no, transmit the first service on the WLAN.
  • a third selecting unit 36 configured to: after the time when the user equipment enters an idle state exceeds a set time, using the interworking policy, after the first service and the user equipment enter an idle state of the RAN, The second service chooses to access the network.
  • the access unit 37 is configured to: when the user equipment enters a connection state of the RAN, when the user equipment initiates a third service, the user equipment receives an indication of the third service by the RAN, The third service accesses the network specified by the RAN.
  • the RAN indicates that the service transmitted by the WLAN needs to determine, according to the execution condition of the interoperation policy, which network selection policy is selected to access the network.
  • a set time, beyond which the interworking policy is used to select the network to access; and the new service initiated after the set time of entering the idle state of the RAN also uses the interoperability policy to select the accessed network.
  • the user equipment can also receive and store in advance the set time acquired according to the definition of the communication protocol of the RAN or the dedicated signaling or broadcast message transmitted by the RAN.
  • the user equipment when the connection state is switched, the user equipment can explicitly access the network according to the specified network selection policy for various services, and can accurately access the network to avoid the network selection decision.
  • the ping-pong problem avoids the situation of confusing operation; and when the user equipment is in the idle state, the network selection policy is determined for each service for a set time, and the set time is exceeded. For these services, the interoperability strategy is uniformly adopted for these services.
  • the service selects the access network, which can reduce the workload when determining the network selection strategy.
  • FIG. 8 is a schematic structural diagram of still another embodiment of a user equipment according to the present invention.
  • the user equipment 4000 includes: And a first obtaining unit 41, configured to acquire an execution condition of the interoperation policy according to a definition of a communication protocol of the radio access network RAN or a dedicated signaling or a broadcast message sent by the RAN.
  • the determining unit 42 is configured to determine, when the RAN is in an idle state, the first service that is sent by the user equipment in the WLAN of the wireless local area network, and determine whether the execution condition of the interoperability policy is met.
  • the first selecting unit 43 is configured to: if the result of the determination is yes, use an interworking policy to select a network for the first service to access.
  • the first selection unit 43 includes a transmitting unit 431, a receiving unit 432, and an executing unit 433.
  • the sending unit 431 is configured to send a report indication message to the RAN if the result of the determination is yes.
  • the receiving unit 432 is configured to receive a response message of the RAN.
  • the executing unit 433 is configured to: use, by the user equipment, the interworking policy to select an access network for the first service according to the response message, or access a network indicated by the response message.
  • the transmitting unit 44 is configured to: if the result of the determination is no, transmit the first service on the WLAN.
  • the second selecting unit 45 is configured to: when the user equipment enters the idle state of the RAN, when the user equipment initiates the second service, the interworking policy is used to select a network for accessing the second service.
  • the access unit 46 is configured to: when the user equipment enters a connection state of the RAN, when the user equipment initiates a third service, receiving an indication of the third service by the RAN, where the third service is Access to the network specified by the RAN.
  • the RAN indicates some qualification conditions for the service transmitted in the WLAN, which are the execution conditions in the interoperation policy in the foregoing embodiment.
  • the user equipment sends a report message to the RAN, where the report message is used to indicate that the user equipment is currently unable to perform the indication that the RAN indicates that the service is transmitted on the WLAN.
  • the report message needs to include at least: That is, which qualification condition is satisfied, or specific parameters such as signal strength and load; the access point identifier (such as BSSID, SSID) currently connected by the UE.
  • the RAN determines, according to the report message, whether it is necessary to indicate a new network selection operation for the user equipment, that is, an interworking policy, such as an ANDSF policy and/or a RAN criterion, for selecting a network for accessing the service, or directly indicating the accessed network, and Indicates that the response message is sent - - is sent to the user equipment, and the user equipment selects an access network for the service according to the response message, or accesses the network indicated by the response message.
  • an interworking policy such as an ANDSF policy and/or a RAN criterion
  • the user equipment when the connection state is switched, the user equipment can explicitly access the network according to the specified network selection policy for various services, and can accurately access the network to avoid the network selection decision.
  • the ping-pong problem to avoid the situation of operational confusion.
  • FIG. 9 is a schematic structural diagram of still another embodiment of a user equipment according to the present invention. As shown in FIG. 9, the user equipment 5000 includes:
  • the input device 51, the output device 52, the memory 53, and the processor 54 (the number of processors 54 in the monitoring device may be one or more, and one processor in Fig. 9 is taken as an example).
  • the input device 51, the output device 52, the memory 53, and the processor 54 may be connected by a bus or other means, wherein the bus connection is taken as an example in FIG.
  • the memory 53 stores a set of program codes
  • the processor 54 is configured to call the program code stored in the memory 53 for performing the following operations:
  • the first service of the user equipment in the WLAN of the wireless local area network determines whether the execution condition of the interoperability policy is met
  • the user equipment uses an interworking policy to select a network for the first service to access;
  • the processor performs, when the user equipment enters the idle state of the radio access network, the first service that is transmitted by the user equipment in the wireless local area network WLAN, and determines whether the interoperability policy is met. Before performing the operation of the condition, it is also used to do the following:
  • the user equipment acquires an execution condition of the interoperation policy according to a definition of a communication protocol of the RAN or a dedicated signaling or a broadcast message sent by the RAN.
  • the processor is further configured to perform the following operations:
  • the user equipment When the user equipment initiates the second service after the user equipment enters the idle state of the RAN, the user equipment uses the interworking policy to select a network for accessing the second service.
  • the processor is further configured to perform the following operations:
  • the processor is further configured to perform the following operations:
  • the user equipment When the user equipment enters the idle state for more than the set time, the user equipment adopts the interworking policy to start the second service after the first service and the user equipment enter the idle state of the RAN. Select the network to access.
  • the processor when the processor performs the time when the user equipment enters an idle state for more than a set time, the user equipment uses the interworking policy to select the first service. Before the operation of the incoming network, it is also used to perform the following operations:
  • the user equipment acquires the set time according to a definition of a communication protocol of the RAN or a dedicated signaling or broadcast message sent by the RAN.
  • the service selects the network to access, or the network indicated by the access response message.
  • the interoperability policy includes access network discovery and selection functional entity ANDSF policies and/or RAN criteria.
  • the execution condition of the interoperability policy includes at least one of the following:
  • the interoperability policy is used.
  • the user equipment when the connection state is changed, the user equipment clears the network that the service selects to access, and can access the network accurately.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules is only a logical function division.
  • there may be another division manner for example, multiple modules or components may be combined or Can be integrated into another device, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some communication interface, device or module, and may be in an electrical, mechanical or other form.
  • the modules described as separate components may or may not be physically separate, and may also be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.

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Abstract

一种选择接入网络的方法及用户设备。其中的方法包括:当用户设备在无线接入网 RAN进入空闲态时,对所述用户设备在无线局域网WLAN传输的第一业务,判断是否满足互操作策略的执行条件;若判断的结果为是,则所述用户设备采用互操作策略为所述第一业务选择接入的网络;若判断的结果为否,则所述用户设备在所述WLAN传输所述第一业务。还公开了相应的用户设备。采用本发明提供的选择接入网络的方法及用户设备的技术方案,用户设备在连接状态转换时,明确其业务选择接入的网络,可以准确地接入网络。

Description

一种选择接入网络的方法及用户设备
技术领域
本发明涉及通信技术领域, 尤其涉及一种选择接入网络的方法及用户设 备。 背景技术
目前智能手机都是具有蜂窝网络功能和无线局域网 (Wireless LAN, WLAN) 功能的。 第三代伙伴项目(The 3rd Generation Partnership Project, 3GPP)协议在 核心网引入了接入网络发现和选择功能实体( Access Network Discovery and Selection Function, ANDSF ), 在实现 WLAN和 3GPP系统间业务连续性和无 缝卸载方面, 该新的网元功能模块 ANDSF起了举足轻重的作用。 ANDSF具 有数据管理和控制功能, 能够响应用户设备 (User Equipment, UE)进行接入网 络选择的请求, 提供发现用户接入网络和进行接入网络选择所需的辅助数据。 UE根据 ANDSF提供的这些信息, 就能结合当前业务的特征, 选择最合适的 接入网络, 从而实现数据业务的有效卸载, 但分流决策的实体是在 UE侧, 而 ANDSF只是提供辅助信息和决策所需的策略信息。除此之外, UE还可以使用 接入网 RAN准则, 结合 ANDSF策略来进行网络选择和分流卸载。
同时, 3GPP在无线接入网(Radio Access Network, RAN)侧也引入了由 RAN控制的分流卸载机制。 即 RAN通过当前网络的状态, 和用户设备 UE上 报的信息等, 使用无线资源控制协议 (Radio Resource Control, RRC)信令来控 制 UE的选网和分流卸载。 因为是通过专用信令来控制 UE,所以这种 RAN控 制的方法要求 UE处于 RRC连接 (RRC_CONNECTED)态。 但 RAN控制的网 络选择和业务分流卸载机制就相对筒单的多, UE只需要根据网络的配置上报 譬如 WLAN的测量信息, 然后网络结合负载, 信号强度, 用户策略等信息, 决策出用户设备的分流操作, 然后通过 RRC信令指示 UE, 而 UE只需要根据 指示操作即可。 因为 RAN可以获取整网的无线资源管理信息, 所以相比 UE 控制的操作而言, 其性能更好。 但是 RAN控制的方法的缺点是, 需要 UE— 直处于 RRC连接态。
所以结合这两类方法的特点, 就出现了一种融合的方案, 即:
UE在 RRC_CONNECTED(RRC连接态)使用 RAN控制的方法;而 UE在 - -
RRCJDLE态 (RRC空闲态)使用 UE控制的方法,譬如 ANDSF策略或者 RAN 准则。
这种融合的方案,实际上就是 UE在连接态和空闲态有两套选网控制策略, 这样就会出现下面这个问题, 举例说明:
UE在 RRC连接态, 根据 RAN指示的信令将业务流分流到 WLAN上进 行传输;
然后因为 UE在蜂窝侧因为没有数据传输所以进入 IDLE态;
此时 UE变成由 ANDSF或者 RAN方式来控制,而 ANDSF策略或者 RAN 方法决策的结果可能会和 RAN控制的指示相反,即判断的结果认为需要将 UE 业务分流到蜂窝网上传输。 然后 UE重新发起 RRC连接, 进入 RRC连接态, 然后将业务从 WLAN迁移到蜂窝进行传输;
因为 UE进入了 RRC连接态, 此时又变成了 RAN控制, 然后 RAN又指 示 UE将业务全部迁回 WLAN, 这样就出现了 UE业务频繁的在 WLAN和蜂 窝之间迁移的乒乓问题。
综上所述,如何解决上述乒乓问题,明确 UE在状态转换时的行为和操作, 避免出现操作混乱的情况成为目前业界迫切需要解决的问题。 发明内容
本发明实施例提供了一种选择接入网络的方法及用户设备, 可以实现 UE 在连接状态转换时, 准确地选择接入的网络。
第一方面, 提供了一种选择接入网络的方法, 包括:
当用户设备在无线接入网 RAN进入空闲态时, 对所述用户设备在无线局 域网 WLAN传输的第一业务, 判断是否满足互操作策略的执行条件;
若判断的结果为是,则所述用户设备采用互操作策略为所述第一业务选择 接入的网络;
若判断的结果为否, 则所述用户设备在所述 WLAN传输所述第一业务。 在第一种可能的实现方式中, 当用户设备在无线接入网 RAN进入空闲态 时, 对所述用户设备在无线局域网 WLAN传输的第一业务, 判断是否满足互 操作策略的执行条件之前, 所述方法还包括:
所述用户设备根据所述 RAN的通信协议的定义或通过所述 RAN发送的 - - 专用信令、 广播消息获取所述互操作策略的执行条件。
结合第一方面或第一方面的第一种可能的实现方式,在第二种可能的实现 方式中, 所述方法还包括:
当所述用户设备进入所述 RAN的空闲态之后, 所述用户设备发起第二业 务时, 所述用户设备采用所述互操作策略为所述第二业务选择接入的网络。
结合第一方面或第一方面的第一种可能的实现方式或第一方面的第二种 可能的实现方式, 在第三种可能的实现方式中, 所述方法还包括:
当所述用户设备进入所述 RAN的连接态时, 所述用户设备发起第三业务 时, 所述用户设备接收所述 RAN对所述第三业务的指示, 将所述第三业务接 入所述 RAN指定的网络。
结合第一方面或第一方面的第一种可能的实现方式,在第四种可能的实现 方式中, 所述方法还包括:
当所述用户设备进入空闲态的时间超过设定时间时,所述用户设备采用所 述互操作策略为所述第一业务和所述用户设备进入所述 RAN的空闲态之后发 起的第二业务选择接入的网络。
结合第一方面的第四种可能的实现方式,在第五种可能的实现方式中, 所 述当所述用户设备进入空闲态的时间超过设定时间时,所述用户设备采用所述 互操作策略为所述第一业务选择接入的网络之前, 所述方法还包括:
所述用户设备根据所述 RAN的通信协议的定义或通过所述 RAN发送的 专用信令、 广播消息获取所述设定时间。
结合第一方面或第一方面的第一种可能的实现方式,在第六种可能的实现 方式中, 所述若判断的结果为是, 则所述用户设备采用互操作策略为所述第一 业务选择接入的网络, 包括:
若判断的结果为是, 所述用户设备向所述 RAN发送上报指示消息; 所述用户设备接收所述 RAN的响应消息, 所述用户设备根据所述响应消 息采用所述互操作策略为所述第一业务选择接入的网络,或者接入响应消息指 示的网络。
结合第一方面或第一方面的第一种可能的实现方式或第一方面的第二种 可能的实现方式或第一方面的第三种可能的实现方式或第一方面的第四种可 能的实现方式或第一方面的第五种可能的实现方式或第一方面的第六种可能 - - 的实现方式,在第七种可能的实现方式中, 所述互操作策略包括接入网络发现 和选择功能实体 ANDSF策略和 /或 RAN准则。
结合第一方面或第一方面的第一种可能的实现方式或第一方面的第二种 可能的实现方式或第一方面的第三种可能的实现方式或第一方面的第四种可 能的实现方式或第一方面的第五种可能的实现方式或第一方面的第六种可能 的实现方式或第一方面的第七种可能的实现方式, 在第八种可能的实现方式 中, 所述互操作策略的执行条件包括以下至少一个:
如果所述 WLAN不可用或所述 WLAN的信号强度低于第一门限值或所述 WLAN的负载大于第二门限值, 则使用所述互操作策略; 或
接收到所述 RAN的广播指示, 指示所述用户设备使用所述互操作策略。 第二方面, 提供了一种用户设备, 包括:
判断单元, 用于当用户设备在无线接入网 RAN进入空闲态时, 对所述用 户设备在无线局域网 WLAN传输的第一业务, 判断是否满足互操作策略的执 行条件;
第一选择单元, 用于若判断的结果为是, 则采用互操作策略为所述第一业 务选择接入的网络;
传输单元, 用于若判断的结果为否, 则在所述 WLAN传输所述第一业务。 在第一种可能的实现方式中, 所述用户设备还包括:
第一获取单元, 用于根据所述 RAN的通信协议的定义或通过所述 RAN 发送的专用信令、 广播消息获取所述互操作策略的执行条件。
结合第二方面或第二方面的第一种可能的实现方式,在第二种可能的实现 方式中, 所述用户设备还包括:
第二选择单元, 用于当所述用户设备进入所述 RAN的空闲态之后, 所述 用户设备发起第二业务时,采用所述互操作策略为所述第二业务选择接入的网 络。
结合第二方面或第二方面的第一种可能的实现方式或第二方面的第二种 可能的实现方式, 在第三种可能的实现方式中, 所述用户设备还包括:
接入单元, 用于当所述用户设备进入所述 RAN的连接态时, 所述用户设 备发起第三业务时, 接收所述 RAN对所述第三业务的指示, 将所述第三业务 - - 接入所述 RAN指定的网络。
结合第二方面或第二方面的第一种可能的实现方式,在第四种可能的实现 方式中, 所述用户设备还包括:
第三选择单元, 用于当所述用户设备进入空闲态的时间超过设定时间时, 采用所述互操作策略为所述第一业务和所述用户设备进入所述 RAN的空闲态 之后发起的第二业务选择接入的网络。
结合第一方面的第四种可能的实现方式,在第五种可能的实现方式中, 所 述用户设备还包括:
第二获取单元, 用于根据所述 RAN的通信协议的定义或通过所述 RAN 发送的专用信令、 广播消息获取所述设定时间。
结合第二方面或第二方面的第一种可能的实现方式,在第六种可能的实现 方式中, 所述第一选择单元包括:
发送单元, 用于若判断的结果为是, 向所述 RAN发送上报指示消息; 接收单元, 用于接收所述 RAN的响应消息;
执行单元,用于所述用户设备根据所述响应消息采用所述互操作策略为所 述第一业务选择接入的网络, 或者接入响应消息指示的网络。
结合第二方面或第二方面的第一种可能的实现方式或第二方面的第二种 可能的实现方式或第二方面的第三种可能的实现方式或第二方面的第四种可 能的实现方式或第二方面的第五种可能的实现方式或第二方面的第六种可能 的实现方式,在第七种可能的实现方式中, 所述互操作策略包括接入网络发现 和选择功能实体 ANDSF策略和 /或 RAN准则。
结合第二方面或第二方面的第一种可能的实现方式或第二方面的第二种 可能的实现方式或第二方面的第三种可能的实现方式或第二方面的第四种可 能的实现方式或第二方面的第五种可能的实现方式或第二方面的第六种可能 的实现方式或第二方面的第七种可能的实现方式, 在第八种可能的实现方式 中, 所述互操作策略的执行条件包括以下至少一个:
如果所述 WLAN不可用或所述 WLAN的信号强度低于第一门限值或所述 WLAN的负载大于第二门限值, 则使用所述互操作策略; 或
接收到所述 RAN的广播指示, 指示所述用户设备使用所述互操作策略。 - - 第三方面, 提供了一种用户设备, 包括: 输入装置、 输出装置、 存储器和 处理器, 其中, 所述存储器中存储一组程序代码, 且所述处理器用于调用所述 存储器中存储的程序代码, 用于执行以下操作:
当用户设备在无线接入网 RAN进入空闲态时, 对所述用户设备在无线局 域网 WLAN传输的第一业务, 判断是否满足互操作策略的执行条件;
若判断的结果为是,则所述用户设备采用互操作策略为所述第一业务选择 接入的网络;
若判断的结果为否, 则所述用户设备在所述 WLAN传输所述第一业务。 在第一种可能的实现方式中, 所述处理器执行当用户设备在无线接入网 RAN进入空闲态时, 对所述用户设备在无线局域网 WLAN传输的第一业务, 判断是否满足互操作策略的执行条件的操作之前, 还用于执行以下操作: 所述用户设备根据所述 RAN的通信协议的定义或通过所述 RAN发送的 专用信令、 广播消息获取所述互操作策略的执行条件。
结合第三方面或第三方面的第一种可能的实现方式,在第二种可能的实现 方式中, 所述处理器还用于执行如下操作:
当所述用户设备进入所述 RAN的空闲态之后, 所述用户设备发起第二业 务时, 所述用户设备采用所述互操作策略为所述第二业务选择接入的网络。
结合第三方面或第三方面的第一种可能的实现方式或第三方面的第二种 可能的实现方式,在第三种可能的实现方式中, 所述处理器还用于执行如下操 作:
当所述用户设备进入所述 RAN的连接态时, 所述用户设备发起第三业务 时, 所述用户设备接收所述 RAN对所述第三业务的指示, 将所述第三业务接 入所述 RAN指定的网络。
结合第三方面或第三方面的第一种可能的实现方式,在第四种可能的实现 方式中, 所述处理器还用于执行如下操作:
当所述用户设备进入空闲态的时间超过设定时间时,所述用户设备采用所 述互操作策略为所述第一业务和所述用户设备进入所述 RAN的空闲态之后发 起的第二业务选择接入的网络。
结合第三方面的第四种可能的实现方式,在第五种可能的实现方式中, 所 述处理器执行所述当所述用户设备进入空闲态的时间超过设定时间时,所述用 户设备采用所述互操作策略为所述第一业务选择接入的网络的操作之前,还用 于执行如下操作:
所述用户设备根据所述 RAN的通信协议的定义或通过所述 RAN发送的 专用信令、 广播消息获取所述设定时间。
结合第三方面或第三方面的第一种可能的实现方式,在第六种可能的实现 方式中, 所述处理器执行所述若判断的结果为是, 则所述用户设备采用互操作 策略为所述第一业务选择接入的网络的操作, 包括:
若判断的结果为是, 所述用户设备向所述 RAN发送上报指示消息; 所述用户设备接收所述 RAN的响应消息, 所述用户设备根据所述响应消 息采用所述互操作策略为所述第一业务选择接入的网络,或者接入响应消息指 示的网络。
结合第三方面或第三方面的第一种可能的实现方式或第三方面的第二种 可能的实现方式或第三方面的第三种可能的实现方式或第三方面的第四种可 能的实现方式或第三方面的第五种可能的实现方式或第三方面的第六种可能 的实现方式,在第七种可能的实现方式中, 所述互操作策略包括接入网络发现 和选择功能实体 ANDSF策略和 /或 RAN准则。
结合第三方面或第三方面的第一种可能的实现方式或第三方面的第二种 可能的实现方式或第三方面的第三种可能的实现方式或第三方面的第四种可 能的实现方式或第三方面的第五种可能的实现方式或第三方面的第六种可能 的实现方式或第三方面的第七种可能的实现方式, 在第八种可能的实现方式 中, 所述互操作策略的执行条件包括以下至少一个:
如果所述 WLAN不可用或所述 WLAN的信号强度低于第一门限值或所述 WLAN的负载大于第二门限值, 则使用所述互操作策略; 或
接收到所述 RAN的广播指示, 指示所述用户设备使用所述互操作策略。 采用本发明提供的选择接入网络的方法及用户设备的技术方案,用户设备 在连接状态转换时, 明确其业务选择接入的网络, 可以准确地接入网络。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施 - - 例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为本发明一种选择接入网络的方法的一个实施例的流程图;
图 2为本发明一种选择接入网络的方法的另一个实施例的流程图; 图 3为本发明一种选择接入网络的方法的又一个实施例的流程图; 图 4为本发明一种选择接入网络的方法的再一个实施例的流程图; 图 5为本发明一种用户设备的一个实施例的结构示意图;
图 6为本发明一种用户设备的另一个实施例的结构示意图;
图 7为本发明一种用户设备的又一个实施例的结构示意图;
图 8为本发明一种用户设备的再一个实施例的结构示意图;
图 9为本发明一种用户设备的再又一个实施例的结构示意图。 具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。基于本发明中的实施例, 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
图 1 为本发明一种选择接入网络的方法的一个实施例的流程图。 如图 1 所示, 该方法包括以下步骤:
步骤 S101 , 当用户设备在无线接入网 RAN进入空闲态时, 对所述用户设 备在无线局域网 WLAN传输的第一业务, 判断是否满足互操作策略的执行条 件, 若是, 则转至步骤 S102; 否则, 转至步骤 S103。
一般情况下,用户设备都是接受 RAN的控制,用户设备的业务都是由 RAN 指示接入哪个网络的,但用户设备必须处于 RAN连接态。 当用户设备在 RAN 进入空闲态时, 由于与 RAN没有连接, 不能接收指示用户设备接入哪个网络 的 RRC信令, 对于在用户设备进入空闲态之前就已经由 RAN指示在 WLAN 传输的业务, 用户设备必须根据一定的条件作出选网决策, 否则会出现现有技 术中的乒乓问题。
因此,设置互操作策略及互操作策略的执行条件, 用户设备首先判断是否 - - 满足互操作策略的执行条件, 例如, 该互操作策略的执行条件可以是 WLAN 不可用, 或 WLAN的信号强度低于第一门限值, 或 WLAN的负载大于第二门 限值, 或接收到 RAN的广播指示, 指示该用户设备使用所述互操作策略。
步骤 S102, 所述用户设备采用互操作策略为所述第一业务选择接入的网 络。
根据步骤 S101判断当前满足互操作策略的执行条件时, 则按照该互操作 策略执行选网操作, 可以采用 ANDSF策略和 /或 RAN准则为该业务选择接入 的网络, 例如蜂窝网等。
步骤 S103, 所述用户设备在所述 WLAN传输所述第一业务。
根据步骤 S101中判断当前不满足互操作策略的执行条件时, 则用户设备 沿用 RAN的指示, 继续在 WLAN传输该业务。
对于在 RAN进入空闲态时由 RAN指示在 WLAN传输的业务, 当判断当 前满足互操作策略的执行条件时,根据互操作策略, 则用户设备会选择接入蜂 窝网, 而不会选择网络条件差的 WLAN; 当判断当前不满足互操作策略的执 行条件时, 即 WLAN网络条件良好时, 则用户设备沿用 RAN的指示, 继续在 WLAN传输该业务, 从而避免选择接入网络时的乒乓问题。
根据本发明实施例提供的选择接入网络的方法,用户设备在连接状态转换 时, 明确其业务选择接入的网络, 可以准确地接入网络。
图 2为本发明一种选择接入网络的方法的另一个实施例的流程图。 如图 所示, 该方法包括以下步骤:
步骤 S201 ,用户设备根据无线接入网 RAN的通信协议的定义或通过所述 RAN发送的专用信令、 广播消息获取互操作策略的执行条件。
用户设备可以预先接收并存储根据 RAN的通信协议的定义、或通过 RAN 发送的专用信令或广播消息发送的互操作策略的执行条件。
该互操作策略可以包括:
ANDSF策略: 例如 ANDSF策略建议将特定的业务流在蜂窝网络或者在 特定的 WLAN上传输, 或者定义特定业务选择网络的优先级。
RAN准则: 是指 RAN定义的一些业务分流准则, 当 UE满足 RAN定义 的门限时, 触发对应的业务流分流到特定的 WLAN或者蜂窝网络。 例如, 当 UE在蜂窝网络的信号强度高于某个门限时, 触发 UE的特定业务流从 WLAN - - 分流到蜂窝网络。
将 UE的特定业务流从 WLAN/蜂窝分流到蜂窝 /WLAN可以通过下面的方 式实现:
基于接入分组网络 (APN)的粒度来定义 RAN准则,即 RAN可以为特定的 APN定义一组业务分流准则, 这些分流准则仅用于和该 APN关联的业务流。 其中 APN和业务流的属性相关,譬如有些 APN关联的业务只能在蜂窝的核心 网上传输, 而有些 APN关联的业务可以被卸载到 WLAN上传输。 当用户需要 对业务流进行分流 /选网判决时, 可以查看和该业务流关联的 APN所对应的 RAN准则, 然后根据准则判断如何操作。
ANDSF和 RAN准则: 这种互操作策略可以看#文是前两种方法的结合, 例如, RAN 准则用于判断是否需要触发业务分流 (从蜂窝到 WLAN 或者从 WLAN到蜂窝), 而具体哪些业务流能够被分流, 则通过 ANDSF策略来判断。
步骤 S202, 当用户设备在所述 RAN进入空闲态时, 对所述用户设备在无 线局域网 WLAN传输的第一业务,判断是否满足所述互操作策略的执行条件, 若是, 则转至步骤 S203; 否则, 转至步骤 S204。
步骤 S203 , 所述用户设备采用互操作策略为所述第一业务选择接入的网 络。
步骤 S204, 所述用户设备在所述 WLAN传输所述第一业务。
步骤 S202至步骤 S204分别与前述实施例的步骤 S101至步骤 S103相同, 在此不再赞述。
需要说明的是, ANDSF能够提供以下 3类信息用于用户设备选择合适的 网络进行接入:
• 系统间移动性策略。该策略规定了是否允许进行系统间的移动, 并为用 户设备接入到核心网(Evolved Packet Core, EPC)系统选择最合适的接入系统。 该策略可以提供给 UE, ANDSF也可以基于运营商策略或者基于 UE发送的网 络发现和选择信息对系统间的移动性策略进行修改。
• 接入网络发现信息。 根据 UE的请求, ANDSF可以提供 UE邻近区域 的所有接入系统的接入网络列表。 接入网络信息可以包括接入技术类型 (如 WLAN或 WiMAX ) , 无线接入网络标识符( WLAN的服务集标识 (Service Set Identifier, SSID) ) 。 - -
• 系统间路由策略。 ANDSF可以给用户提供一个系统间路由策略的列表, 包括一些过滤规则, 规定某个特定的业务流或者特定的接入点 (Access Point Name, APN),是否允许接入到某个接入系统中; 并且在用户进行数据路由时, 根据路由策略定义的接入系统的优先级, 为业务选择最合适的接入技术或者 APN。
用户设备可以使用 RAN准则单独选择接入的网络, RAN准则包括 RAN 辅助信息,用户设备可以结合 RAN辅助信息和 ANDSF策略选择接入的网络, 例如: RAN为用户设备提供一些用于选网和分流的辅助参数, 譬如判决门限 (RAN/WLAN信号强度, RAN/WLAN负载), 选网指示等, 然后用户设备根据 测量结果和 ANDSF策略来判断如何选网和进行分流。
具体地, 例如: RAN提供的辅助信息中包含 2个判决门限 X(WLAN信号 强度), Y(WLAN负载),对应的 ANDSF策略为:如果 UE当前检测到的 WLAN 信号强度大于 X, 并且检测到的 WLAN负载小于 Y, 则将 UE的业务流分流 到 WLAN, 那么 UE根据 RAN提供的辅助信息, 结合 ANDSF策略, 就能判 决何时将业务从 RAN分流到 WLAN。
步骤 S205, 当所述用户设备进入所述 RAN的空闲态之后, 所述用户设备 发起第二业务时,所述用户设备采用所述互操作策略为所述第二业务选择接入 的网络。
步骤 S205为在用户设备进入 RAN的空闲态后, 如果用户设备有新业务 发起的话, 用户设备采用 ANDSF策略和 /或 RAN准则为该业务选择接入的网 络。 对于新的业务, 明确采用互操作策略选择接入的网络, 也可以避免在选网 决策时的乒乓问题, 避免出现操作混乱的情况。
步骤 S206, 当所述用户设备进入所述 RAN的连接态时, 所述用户设备发 起第三业务时, 所述用户设备接收所述 RAN对所述第三业务的指示, 将所述 第三业务接入所述 RAN指定的网络。
用户设备由 RAN的空闲态进入 RAN的连接态后, 对于任意业务需要选 择接入网络时, 优先根据 RAN的指示将该业务接入 RAN指定的网络, 因为 RAN可以获取整网的无线资源管理信息, 相比 UE控制的接入网络操作而言, 其性能更好, 而一旦指定了该业务按照 RAN的指示接入网络, 也可以避免在 选网决策时的乒乓问题, 避免出现操作混乱的情况。 - - 根据本发明实施例提供的选择接入网络的方法,用户设备在连接状态转换 时, 对于各种业务明确其选择接入的网络, 可以准确地接入网络, 避免在选网 决策时的乒乓问题, 避免出现操作混乱的情况。
图 3为本发明一种选择接入网络的方法的又一个实施例的流程图。 如图 3 所示, 该方法包括以下步骤:
步骤 S301 ,用户设备根据无线接入网 RAN的通信协议的定义或通过所述 RAN发送的专用信令、 广播消息获取互操作策略的执行条件。
步骤 S302, 所述用户设备根据所述 RAN 的通信协议的定义或通过所述 RAN发送的专用信令、 广播消息获取设定时间, 并开始计时。
步骤 S303, 当用户设备在所述 RAN进入空闲态时, 对所述用户设备在无 线局域网 WLAN传输的第一业务,判断是否满足所述互操作策略的执行条件, 若是, 则转至步骤 S304; 否则, 转至步骤 S305。
步骤 S304, 所述用户设备采用互操作策略为所述第一业务选择接入的网 络。
步骤 S305, 所述用户设备在所述 WLAN传输所述第一业务。
步骤 S306, 判断是否已超过所述设定时间, 如果是, 则转至步骤 S307; 否则, 转至步骤 S303。
步骤 S307, 所述用户设备采用所述互操作策略为所述第一业务和所述用 户设备进入所述 RAN的空闲态之后发起的第二业务选择接入的网络。
步骤 S308, 当所述用户设备进入所述 RAN的连接态时, 所述用户设备发 起第三业务时, 所述用户设备接收所述 RAN对所述第三业务的指示, 将所述 第三业务接入所述 RAN指定的网络。
本实施例与前述实施例的不同之处在于, 给用户设备在进入 RAN的空闲 态之前由 RAN指示在 WLAN传输的业务需根据互操作策略的执行条件判断依 据哪个选网策略选择接入的网络一个设定时间,超过该设定时间, 采用互操作 策略选择接入的网络; 以及在进入 RAN的空闲态的设定时间之后发起的新业 务也采用互操作策略选择接入的网络。
用户设备也可以预先接收并存储根据 RAN的通信协议的定义或通过 RAN 发送的专用信令、 广播消息获取的该设定时间。
根据本发明实施例提供的选择接入网络的方法,用户设备在连接状态转换 - - 时,对于各种业务明确其按照指定的选网策略选择接入的网络, 可以准确地接 入网络, 避免在选网决策时的乒乓问题, 避免出现操作混乱的情况; 且在用户 设备处于空闲态时,给各种业务确定选网策略一个设定时间,超过该设定时间, 对于这些业务, 统一采用互操作策略为这些业务选择接入的网络, 可以减少确 定选网策略时的工作量。
图 4为本发明一种选择接入网络的方法的再一个实施例的流程图。 如图 4 所示, 该方法包括以下步骤:
步骤 S401 ,用户设备根据无线接入网 RAN的通信协议的定义或通过所述 RAN发送的专用信令、 广播消息获取互操作策略的执行条件。
步骤 S402, 当用户设备在所述 RAN进入空闲态时, 对所述用户设备在无 线局域网 WLAN传输的第一业务,判断是否满足所述互操作策略的执行条件, 若是, 则转至步骤 S403; 否则, 转至步骤 S404。
步骤 S403 , 所述用户设备向所述 RAN发送上报指示消息。
步骤 S404, 所述用户设备在所述 WLAN传输所述第一业务。
步骤 S405 , 所述用户设备接收所述 RAN的响应消息, 所述用户设备根据 所述响应消息采用所述互操作策略为所述第一业务选择接入的网络,或者接入 响应消息指示的网络。
步骤 S406 , 当所述用户设备进入所述 RAN的空闲态之后, 所述用户设备 发起第二业务时,所述用户设备采用所述互操作策略为所述第二业务选择接入 的网络。
步骤 S407, 当所述用户设备进入所述 RAN的连接态时, 所述用户设备发 起第三业务时, 所述用户设备接收所述 RAN对所述第三业务的指示, 将所述 第三业务接入所述 RAN指定的网络。
本实施例与前述实施例的步骤 S201至步骤 S206的不同之处在于, 步骤 S203具体包括步骤 S403和步骤 S405, 对于进入 RAN的空闲态之前由 RAN 指示在 WLAN传输的业务设置一些限定条件, 这些限定条件即前述实施例中 的互操作策略中的执行条件, 当满足这些限定条件时, 用户设备向 RAN发送 上报消息, 该上报消息用于指示该用户设备当前无法执行 RAN指示将该业务 在 WLAN传输的指示, 具体地, 该上报消息至少需要包含: 上报原因, 即是 哪个限定条件满足, 或者具体的参数如信号强度、 负载; UE当前连接的接入 - - 点标示 (如 BSSID, SSID)。 RAN根据上报消息判断是否需要为用户设备指示 新的选网操作, 即采用互操作策略例如 ANDSF策略和 /或 RAN准则为该业务 选择接入的网络, 或直接指示接入的网络, 并把这些指示在响应消息中发送给 用户设备, 用户设备根据该响应消息采用互操作策略为该业务选择接入的网 络, 或者接入响应消息指示的网络。
根据本发明实施例提供的选择接入网络的方法,用户设备在连接状态转换 时,对于各种业务明确其按照指定的选网策略选择接入的网络, 可以准确地接 入网络, 避免在选网决策时的乒乓问题, 避免出现操作混乱的情况。
图 5为本发明一种用户设备的一个实施例的结构示意图。如图 5所示, 该 用户设备 1000包括:
判断单元 11 , 用于当用户设备在无线接入网 RAN进入空闲态时, 对所述 用户设备在无线局域网 WLAN传输的第一业务, 判断是否满足互操作策略的 执行条件。
一般情况下,用户设备都是接受 RAN的控制,用户设备的业务都是由 RAN 指示接入哪个网络的,但用户设备必须处于 RAN连接态。 当用户设备在 RAN 进入空闲态时, 由于与 RAN没有连接, 不能接收指示用户设备接入哪个网络 的 RRC信令, 对于在用户设备进入空闲态之前就已经由 RAN指示在 WLAN 传输的业务, 用户设备必须根据一定的条件作出选网决策, 否则会出现现有技 术中的乒乓问题。
因此,设置互操作策略及互操作策略的执行条件, 用户设备首先判断是否 满足互操作策略的执行条件, 例如, 该互操作策略的执行条件可以是 WLAN 不可用, 或 WLAN的信号强度低于第一门限值, 或 WLAN的负载大于第二门 限值, 或接收到 RAN的广播指示, 指示该用户设备使用所述互操作策略。
第一选择单元 12, 用于若判断的结果为是, 则采用互操作策略为所述第 一业务选择接入的网络。
判断单元 11判断当前满足互操作策略的执行条件时, 则第一选择单元 12 按照该互操作策略执行选网操作, 可以采用 ANDSF策略和 /或 RAN准则为该 业务选择接入的网络, 例如蜂窝网等。
传输单元 13, 用于若判断的结果为否, 则在所述 WLAN传输所述第一业 务。 - - 判断单元 11判断当前不满足互操作策略的执行条件时,则传输单元 13沿 用 RAN的指示, 继续在 WLAN传输该业务。
对于在 RAN进入空闲态时由 RAN指示在 WLAN传输的业务, 当判断当 前满足互操作策略的执行条件时,根据互操作策略, 则用户设备会选择接入蜂 窝网, 而不会选择网络条件差的 WLAN; 当判断当前不满足互操作策略的执 行条件时, 即 WLAN网络条件良好时, 则用户设备沿用 RAN的指示, 继续在 WLAN传输该业务, 从而避免选择接入网络时的乒乓问题。
根据本发明实施例提供的用户设备, 该用户设备在连接状态转换时, 明确 其业务选择接入的网络, 可以准确地接入网络。
图 6为本发明一种用户设备的另一个实施例的结构示意图。 如图 6所示, 该用户设备 2000包括:
第一获取单元 21 ,用于根据无线接入网 RAN的通信协议的定义或通过所 述 RAN发送的专用信令、 广播消息获取互操作策略的执行条件。
第一获取单元 21可以预先接收并在用户设备中存储根据 RAN的通信协议 的定义、 或通过 RAN发送的专用信令或广播消息发送的互操作策略的执行条 件。
该互操作策略可以包括:
ANDSF策略: 例如 ANDSF策略建议将特定的业务流在蜂窝网络或者在 特定的 WLAN上传输, 或者定义特定业务选择网络的优先级。
RAN准则: 是指 RAN定义的一些业务分流准则, 当 UE满足 RAN定义 的门限时, 触发对应的业务流分流到特定的 WLAN或者蜂窝网络。 例如, 当 UE在蜂窝网络的信号强度高于某个门限时, 触发 UE的特定业务流从 WLAN 分流到蜂窝网络。
将 UE的特定业务流从 WLAN/蜂窝分流到蜂窝 /WLAN可以通过下面的方 式实现:
基于接入分组网络 (APN)的粒度来定义 RAN准则,即 RAN可以为特定的 APN定义一组业务分流准则, 这些分流准则仅用于和该 APN关联的业务流。 其中 APN和业务流的属性相关,譬如有些 APN关联的业务只能在蜂窝的核心 网上传输, 而有些 APN关联的业务可以被卸载到 WLAN上传输。 当用户需要 对业务流进行分流 /选网判决时, 可以查看和该业务流关联的 APN所对应的 - -
RAN准则, 然后根据准则判断如何操作。
ANDSF和 RAN准则: 这种互操作策略可以看#文是前两种方法的结合, 例如, RAN 准则用于判断是否需要触发业务分流 (从蜂窝到 WLAN 或者从 WLAN到蜂窝), 而具体哪些业务流能够被分流, 则通过 ANDSF策略来判断。
判断单元 22, 用于当用户设备在所述 RAN进入空闲态时, 对所述用户设 备在无线局域网 WLAN传输的第一业务, 判断是否满足所述互操作策略的执 行条件。
第一选择单元 23, 用于若判断的结果为是, 则采用互操作策略为所述第 一业务选择接入的网络。
传输单元 24, 用于若判断的结果为否, 则在所述 WLAN传输所述第一业 务。
判断单元 22、第一选择单元 23、传输单元 24的功能分别与前述实施例的 判断单元 11、 第一选择单元 12、 传输单元 13的功能相同, 在此不再赘述。
需要说明的是, ANDSF能够提供以下 3类信息用于用户设备选择合适的 网络进行接入:
• 系统间移动性策略。 该策略规定了是否允许进行系统间的移动, 并 为用户设备接入到核心网(Evolved Packet Core , EPC)系统选择最合适的接 入系统。 该策略可以提供给 UE, ANDSF也可以基于运营商策略或者基于 UE发送的网络发现和选择信息对系统间的移动性策略进行修改。
· 接入网络发现信息。 根据 UE的请求, ANDSF可以提供 UE邻近区 域的所有接入系统的接入网络列表。 接入网络信息可以包括接入技术类型 (如 WLAN或 WiMAX ), 无线接入网络标识符(WLAN 的服务集标识 (Service Set Identifier, SSID) )。
• 系统间路由策略。 ANDSF可以给用户提供一个系统间路由策略的列 表, 包括一些过滤规则, 规定某个特定的业务流或者特定的接入点 (Access Point Name, APN), 是否允许接入到某个接入系统中; 并且在用户进行数 据路由时, 根据路由策略定义的接入系统的优先级, 为业务选择最合适的 接入技术或者 APN。
用户设备可以使用 RAN准则单独选择接入的网络, RAN准则包括 RAN 辅助信息,用户设备可以结合 RAN辅助信息和 ANDSF策略选择接入的网络, - - 例如: RAN 为用户设备提供一些用于选网和分流的辅助参数, 譬如判决门限 (RAN/WLAN信号强度, RAN/WLAN负载), 选网指示等, 然后用户设备根据 测量结果和 ANDSF策略来判断如何选网和进行分流。
具体地, 例如: RAN提供的辅助信息中包含 2个判决门限 X(WLAN信号 强度), Y(WLAN负载),对应的 ANDSF策略为:如果 UE当前检测到的 WLAN 信号强度大于 X, 并且检测到的 WLAN负载小于 Y, 则将 UE的业务流分流 到 WLAN, 那么 UE根据 RAN提供的辅助信息, 结合 ANDSF策略, 就能判 决何时将业务从 RAN分流到 WLAN。
第二选择单元 25, 用于当所述用户设备进入所述 RAN的空闲态之后, 所 述用户设备发起第二业务时,采用所述互操作策略为所述第二业务选择接入的 网络。
在用户设备进入 RAN的空闲态后, 如果用户设备有新业务发起的话, 用 户设备采用 ANDSF策略和 /或 RAN准则为该业务选择接入的网络。 对于新的 业务, 明确采用互操作策略选择接入的网络,也可以避免在选网决策时的乒乓 问题, 避免出现操作混乱的情况。
接入单元 26, 用于当所述用户设备进入所述 RAN的连接态时, 所述用户 设备发起第三业务时, 接收所述 RAN对所述第三业务的指示, 将所述第三业 务接入所述 RAN指定的网络。
用户设备由 RAN的空闲态进入 RAN的连接态后, 对于任意业务需要选 择接入网络时, 优先根据 RAN的指示将该业务接入 RAN指定的网络, 因为 RAN可以获取整网的无线资源管理信息, 相比 UE控制的接入网络操作而言, 其性能更好, 而一旦指定了该业务按照 RAN的指示接入网络, 也可以避免在 选网决策时的乒乓问题, 避免出现操作混乱的情况。
根据本发明实施例提供的用户设备, 该用户设备在连接状态转换时,对于 各种业务明确其选择接入的网络, 可以准确地接入网络,避免在选网决策时的 乒乓问题, 避免出现操作混乱的情况。
图 7为本发明一种用户设备的又一个实施例的结构示意图。 如图 7所示, 该用户设备 3000包括:
第一获取单元 31 ,用于根据无线接入网 RAN的通信协议的定义或通过所 述 RAN发送的专用信令、 广播消息获取互操作策略的执行条件。 - - 第二获取单元 32,用于根据所述 RAN的通信协议的定义或通过所述 RAN 发送的专用信令、 广播消息获取设定时间。
判断单元 33, 用于当用户设备在所述 RAN进入空闲态时, 对所述用户设 备在无线局域网 WLAN传输的第一业务, 判断是否满足所述互操作策略的执 行条件。
第一选择单元 34, 用于若判断的结果为是, 则采用互操作策略为所述第 一业务选择接入的网络。
传输单元 35, 用于若判断的结果为否, 则在所述 WLAN传输所述第一业 务。
第三选择单元 36, 用于当所述用户设备进入空闲态的时间超过设定时间 时, 采用所述互操作策略为所述第一业务和所述用户设备进入所述 RAN的空 闲态之后发起的第二业务选择接入的网络。
接入单元 37, 用于当所述用户设备进入所述 RAN的连接态时, 所述用户 设备发起第三业务时, 所述用户设备接收所述 RAN对所述第三业务的指示, 将所述第三业务接入所述 RAN指定的网络。
本实施例与前述实施例的不同之处在于, 给用户设备在进入 RAN的空闲 态之前由 RAN指示在 WLAN传输的业务需根据互操作策略的执行条件判断依 据哪个选网策略选择接入的网络一个设定时间,超过该设定时间, 采用互操作 策略选择接入的网络; 以及在进入 RAN的空闲态的设定时间之后发起的新业 务也采用互操作策略选择接入的网络。
用户设备也可以预先接收并存储根据 RAN的通信协议的定义或通过 RAN 发送的专用信令、 广播消息获取的该设定时间。
根据本发明实施例提供的用户设备, 该用户设备在连接状态转换时,对于 各种业务明确其按照指定的选网策略选择接入的网络, 可以准确地接入网络, 避免在选网决策时的乒乓问题,避免出现操作混乱的情况; 且在用户设备处于 空闲态时, 给各种业务确定选网策略一个设定时间, 超过该设定时间, 对于这 些业务, 统一采用互操作策略为这些业务选择接入的网络, 可以减少确定选网 策略时的工作量。
图 8为本发明一种用户设备的再一个实施例的结构示意图。 如图 8所示, 该用户设备 4000包括: - - 第一获取单元 41 ,用于根据无线接入网 RAN的通信协议的定义或通过所 述 RAN发送的专用信令、 广播消息获取互操作策略的执行条件。
判断单元 42, 用于当用户设备在所述 RAN进入空闲态时, 对所述用户设 备在无线局域网 WLAN传输的第一业务, 判断是否满足所述互操作策略的执 行条件。
第一选择单元 43, 用于若判断的结果为是, 则采用互操作策略为所述第 一业务选择接入的网络。
在本实施例中, 第一选择单元 43包括发送单元 431、 接收单元 432和执 行单元 433。
发送单元 431 , 用于若判断的结果为是, 向所述 RAN发送上报指示消息。 接收单元 432, 用于接收所述 RAN的响应消息。
执行单元 433 , 用于所述用户设备根据所述响应消息采用所述互操作策略 为所述第一业务选择接入的网络, 或者接入响应消息指示的网络。
传输单元 44, 用于若判断的结果为否, 则在所述 WLAN传输所述第一业 务。
第二选择单元 45, 用于当所述用户设备进入所述 RAN的空闲态之后, 所 述用户设备发起第二业务时,采用所述互操作策略为所述第二业务选择接入的 网络。
接入单元 46, 用于当所述用户设备进入所述 RAN的连接态时, 所述用户 设备发起第三业务时, 接收所述 RAN对所述第三业务的指示, 将所述第三业 务接入所述 RAN指定的网络。
本实施例与前述实施例的不同之处在于, 对于进入 RAN的空闲态之前由 RAN指示在 WLAN传输的业务设置一些限定条件,这些限定条件即前述实施 例中的互操作策略中的执行条件, 当满足这些限定条件时, 用户设备向 RAN 发送上报消息, 该上报消息用于指示该用户设备当前无法执行 RAN指示将该 业务在 WLAN传输的指示, 具体地, 该上报消息至少需要包含: 上报原因, 即是哪个限定条件满足, 或者具体的参数如信号强度、 负载; UE当前连接的 接入点标示 (如 BSSID, SSID)。 RAN根据上报消息判断是否需要为用户设备 指示新的选网操作, 即采用互操作策略例如 ANDSF策略和 /或 RAN准则为该 业务选择接入的网络, 或直接指示接入的网络, 并把这些指示在响应消息中发 - - 送给用户设备,用户设备根据该响应消息采用互操作策略为该业务选择接入的 网络, 或者接入响应消息指示的网络。
根据本发明实施例提供的用户设备, 该用户设备在连接状态转换时,对于 各种业务明确其按照指定的选网策略选择接入的网络, 可以准确地接入网络, 避免在选网决策时的乒乓问题, 避免出现操作混乱的情况。
图 9为本发明一种用户设备的再又一个实施例的结构示意图。如图 9所示, 该用户设备 5000包括:
输入装置 51、 输出装置 52、 存储器 53和处理器 54(监测设备中的处理器 54的数量可以一个或多个, 图 9中以一个处理器为例)。 在本发明的一些实施 例中, 输入装置 51、 输出装置 52、 存储器 53和处理器 54可通过总线或其它 方式连接, 其中, 图 9中以通过总线连接为例。
其中, 存储器 53中存储一组程序代码, 且处理器 54用于调用存储器 53 中存储的程序代码, 用于执行以下操作:
当用户设备在无线接入网 RAN进入空闲态时, 对所述用户设备在无线局 域网 WLAN传输的第一业务, 判断是否满足互操作策略的执行条件;
若判断的结果为是,则所述用户设备采用互操作策略为所述第一业务选择 接入的网络;
若判断的结果为否, 则所述用户设备在所述 WLAN传输所述第一业务。 在本发明的一些实施例中, 所述处理器执行当用户设备在无线接入网 RAN进入空闲态时, 对所述用户设备在无线局域网 WLAN传输的第一业务, 判断是否满足互操作策略的执行条件的操作之前, 还用于执行以下操作:
所述用户设备根据所述 RAN的通信协议的定义或通过所述 RAN发送的 专用信令、 广播消息获取所述互操作策略的执行条件。
在本发明的一些实施例中, 所述处理器还用于执行如下操作:
当所述用户设备进入所述 RAN的空闲态之后, 所述用户设备发起第二业 务时, 所述用户设备采用所述互操作策略为所述第二业务选择接入的网络。
在本发明的一些实施例中, 所述处理器还用于执行如下操作:
当所述用户设备进入所述 RAN的连接态时, 所述用户设备发起第三业务 时, 所述用户设备接收所述 RAN对所述第三业务的指示, 将所述第三业务接 入所述 RAN指定的网络。 - - 在本发明的一些实施例中, 所述处理器还用于执行如下操作:
当所述用户设备进入空闲态的时间超过设定时间时,所述用户设备采用所 述互操作策略为所述第一业务和所述用户设备进入所述 RAN的空闲态之后发 起的第二业务选择接入的网络。
在本发明的一些实施例中,所述处理器执行所述当所述用户设备进入空闲 态的时间超过设定时间时,所述用户设备采用所述互操作策略为所述第一业务 选择接入的网络的操作之前, 还用于执行如下操作:
所述用户设备根据所述 RAN的通信协议的定义或通过所述 RAN发送的 专用信令、 广播消息获取所述设定时间。
在本发明的一些实施例中, 所述处理器执行所述若判断的结果为是, 则所 述用户设备采用互操作策略为所述第一业务选择接入的网络的操作, 包括: 若判断的结果为是, 所述用户设备向所述 RAN发送上报指示消息; 所述用户设备接收所述 RAN的响应消息, 所述用户设备根据所述响应消 息采用所述互操作策略为所述第一业务选择接入的网络,或者接入响应消息指 示的网络。
在本发明的一些实施例中,所述互操作策略包括接入网络发现和选择功能 实体 ANDSF策略和 /或 RAN准则。
在本发明的一些实施例中, 所述互操作策略的执行条件包括以下至少一 个:
如果所述 WLAN不可用或所述 WLAN的信号强度低于第一门限值或所述
WLAN的负载大于第二门限值, 则使用所述互操作策略; 或
接收到所述 RAN的广播指示, 指示所述用户设备使用所述互操作策略。 可以理解的是, 本实施例的用户设备 5000的各功能模块的功能可根据上 述方法实施例中的方法具体实现,其具体实现过程可以参照上述方法实施例的 相关描述, 此处不再赘述。
根据本发明实施例提供的用户设备,该用户设备在连接状态转换时, 明确 其业务选择接入的网络, 可以准确地接入网络。
所属领域的技术人员可以清楚地了解到, 为描述的方便和筒洁, 上述描述 的设备和模块的具体工作过程, 可以参考前述方法实施例中的对应过程描述, 在此不再赘述。 - - 在本申请所提供的几个实施例中, 应该理解到, 所揭露的设备和方法, 可 以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示意性的, 例 如, 所述模块的划分, 仅仅为一种逻辑功能划分, 实际实现时可以有另外的划 分方式, 例如多个模块或组件可以结合或者可以集成到另一个设备中, 或一些 特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间的耦合或直接耦 合或通信连接可以是通过一些通信接口, 装置或模块的间接耦合或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的模块可以是或者也可以不是物理上分开的,作为 也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或者全 部, 模块来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能模块可以集成在一个处理模块中, 也可以是各个模块单独物理存在,也可以两个或两个以上模块集成在一个模块 中。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到各实施 方式可借助软件加必需的通用硬件平台的方式来实现, 当然也可以通过硬件。 基于这样的理解,上述技术方案本质上或者说对现有技术做出贡献的部分可以 以软件设备的形式体现出来,该计算机软件设备可以存储在计算机可读存储介 质中, 如 ROM/RAM、 磁碟、 光盘等, 包括若干指令用以使得一台计算机设备 (可以是个人计算机, 服务器, 或者网络设备等)执行各个实施例或者实施例 的某些部分所述的方法。
以上所述的实施方式, 并不构成对该技术方案保护范围的限定。任何在上 述实施方式的精神和原则之内所作的修改、等同替换和改进等, 均应包含在该 技术方案的保护范围之内。

Claims

权 利 要 求
1、 一种选择接入网络的方法, 其特征在于, 包括:
当用户设备在无线接入网 RAN进入空闲态时, 对所述用户设备在无线局 域网 WLAN传输的第一业务, 判断是否满足互操作策略的执行条件;
若判断的结果为是,则所述用户设备采用互操作策略为所述第一业务选择 接入的网络;
若判断的结果为否, 则所述用户设备在所述 WLAN传输所述第一业务。
2、如权利要求 1所述的方法,其特征在于,当用户设备在无线接入网 RAN 进入空闲态时, 对所述用户设备在无线局域网 WLAN传输的第一业务, 判断 是否满足互操作策略的执行条件之前, 还包括:
所述用户设备根据所述 RAN的通信协议的定义或通过所述 RAN发送的 专用信令、 广播消息获取所述互操作策略的执行条件。
3、 如权利要求 1或 2所述的方法, 其特征在于, 还包括:
当所述用户设备进入所述 RAN的空闲态之后, 所述用户设备发起第二业 务时, 所述用户设备采用所述互操作策略为所述第二业务选择接入的网络。
4、 如权利要求 1-3任意一项所述的方法, 其特征在于, 还包括: 当所述用户设备进入所述 RAN的连接态时, 所述用户设备发起第三业务 时, 所述用户设备接收所述 RAN对所述第三业务的指示, 将所述第三业务接 入所述 RAN指定的网络。
5、 如权利要求 1或 2所述的方法, 其特征在于, 还包括:
当所述用户设备进入空闲态的时间超过设定时间时,所述用户设备采用所 述互操作策略为所述第一业务和所述用户设备进入所述 RAN的空闲态之后发 起的第二业务选择接入的网络。
6、 如权利要求 5所述的方法, 其特征在于, 所述当所述用户设备进入空 闲态的时间超过设定时间时,所述用户设备采用所述互操作策略为所述第一业 务选择接入的网络之前, 还包括:
所述用户设备根据所述 RAN的通信协议的定义或通过所述 RAN发送的 专用信令、 广播消息获取所述设定时间。
7、 如权利要求 1或 2所述的方法, 其特征在于, 所述若判断的结果为是, 则所述用户设备采用互操作策略为所述第一业务选择接入的网络, 包括:
若判断的结果为是, 所述用户设备向所述 RAN发送上报指示消息; 所述用户设备接收所述 RAN的响应消息, 所述用户设备根据所述响应消 息采用所述互操作策略为所述第一业务选择接入的网络,或者接入响应消息指 示的网络。
8、 如权利要求 1-7所述的方法, 其特征在于, 所述互操作策略包括接入 网络发现和选择功能实体 ANDSF策略和 /或 RAN准则。
9、 如权利要求 1-8任意一项所述的方法, 其特征在于, 所述互操作策略 的执行条件包括以下至少一个:
如果所述 WLAN不可用或所述 WLAN的信号强度低于第一门限值或所述 WLAN的负载大于第二门限值, 则使用所述互操作策略; 或
接收到所述 RAN的广播指示, 指示所述用户设备使用所述互操作策略。
10、 一种用户设备, 其特征在于, 包括:
判断单元, 用于当用户设备在无线接入网 RAN进入空闲态时, 对所述用 户设备在无线局域网 WLAN传输的第一业务, 判断是否满足互操作策略的执 行条件;
第一选择单元, 用于若判断的结果为是, 则采用互操作策略为所述第一业 务选择接入的网络;
传输单元, 用于若判断的结果为否, 则在所述 WLAN传输所述第一业务。
11、 如权利要求 10所述的用户设备, 其特征在于, 还包括:
第一获取单元, 用于根据所述 RAN的通信协议的定义或通过所述 RAN 发送的专用信令、 广播消息获取所述互操作策略的执行条件。
12、 如权利要求 10或 11所述的用户设备, 其特征在于, 还包括: 第二选择单元, 用于当所述用户设备进入所述 RAN的空闲态之后, 所述 用户设备发起第二业务时,采用所述互操作策略为所述第二业务选择接入的网 络。
13、 如权利要求 10-12任意一项所述的用户设备, 其特征在于, 还包括: 接入单元, 用于当所述用户设备进入所述 RAN的连接态时, 所述用户设 备发起第三业务时, 接收所述 RAN对所述第三业务的指示, 将所述第三业务 接入所述 RAN指定的网络。
14、 如权利要求 10或 11所述的用户设备, 其特征在于, 还包括: 第三选择单元, 用于当所述用户设备进入空闲态的时间超过设定时间时, 采用所述互操作策略为所述第一业务和所述用户设备进入所述 RAN的空闲态 之后发起的第二业务选择接入的网络。
15、 如权利要求 14所述的用户设备, 其特征在于, 还包括:
第二获取单元, 用于根据所述 RAN的通信协议的定义或通过所述 RAN 发送的专用信令、 广播消息获取所述设定时间。
16、 如权利要求 10或 11所述的用户设备, 其特征在于, 所述第一选择单 元包括:
发送单元, 用于若判断的结果为是, 向所述 RAN发送上报指示消息; 接收单元, 用于接收所述 RAN的响应消息;
执行单元,用于所述用户设备根据所述响应消息采用所述互操作策略为所 述第一业务选择接入的网络, 或者接入响应消息指示的网络。
17、 如权利要求 10-16所述的用户设备, 其特征在于, 所述互操作策略包 括接入网络发现和选择功能实体 ANDSF策略和 /或 RAN准则。
18、 如权利要求 1-7任意一项所述的用户设备, 其特征在于, 所述互操作 策略的执行条件包括以下至少一个:
如果所述 WLAN不可用或所述 WLAN的信号强度低于第一门限值或所述 WLAN的负载大于第二门限值, 则使用所述互操作策略; 或
接收到所述 RAN的广播指示, 指示所述用户设备使用所述互操作策略。
19、 一种用户设备, 其特征在于, 包括: 输入装置、 输出装置、 存储器和 处理器, 其中, 所述存储器中存储一组程序代码, 且所述处理器用于调用所述 存储器中存储的程序代码, 用于执行以下操作:
当用户设备在无线接入网 RAN进入空闲态时, 对所述用户设备在无线局 域网 WLAN传输的第一业务, 判断是否满足互操作策略的执行条件;
若判断的结果为是,则所述用户设备采用互操作策略为所述第一业务选择 接入的网络;
若判断的结果为否, 则所述用户设备在所述 WLAN传输所述第一业务。
20、 如权利要求 19所述的用户设备, 其特征在于, 所述处理器执行当用 户设备在无线接入网 RAN 进入空闲态时, 对所述用户设备在无线局域网
WLAN传输的第一业务, 判断是否满足互操作策略的执行条件的操作之前, 还用于执行以下操作:
所述用户设备根据所述 RAN的通信协议的定义或通过所述 RAN发送的 专用信令、 广播消息获取所述互操作策略的执行条件。
21、 如权利要求 19或 20所述的用户设备, 其特征在于, 所述处理器还用 于执行如下操作:
当所述用户设备进入所述 RAN的空闲态之后, 所述用户设备发起第二业 务时, 所述用户设备采用所述互操作策略为所述第二业务选择接入的网络。
22、 如权利要求 19-21任意一项所述的用户设备, 其特征在于, 所述处理 器还用于执行如下操作:
当所述用户设备进入所述 RAN的连接态时, 所述用户设备发起第三业务 时, 所述用户设备接收所述 RAN对所述第三业务的指示, 将所述第三业务接 入所述 RAN指定的网络。
23、 如权利要求 19或 20所述的用户设备, 其特征在于, 所述处理器还用 于执行如下操作:
当所述用户设备进入空闲态的时间超过设定时间时,所述用户设备采用所 述互操作策略为所述第一业务和所述用户设备进入所述 RAN的空闲态之后发 起的第二业务选择接入的网络。
24、 如权利要求 23所述的用户设备, 其特征在于, 所述处理器执行所述 当所述用户设备进入空闲态的时间超过设定时间时,所述用户设备采用所述互 操作策略为所述第一业务选择接入的网络的操作之前, 还用于执行如下操作: 所述用户设备根据所述 RAN的通信协议的定义或通过所述 RAN发送的 专用信令、 广播消息获取所述设定时间。
25、 如权利要求 19或 20所述的用户设备, 其特征在于, 所述处理器执行 所述若判断的结果为是,则所述用户设备采用互操作策略为所述第一业务选择 接入的网络的操作, 包括:
若判断的结果为是, 所述用户设备向所述 RAN发送上报指示消息; 所述用户设备接收所述 RAN的响应消息, 所述用户设备根据所述响应消 息采用所述互操作策略为所述第一业务选择接入的网络,或者接入响应消息指 示的网络。
26、 如权利要求 19-25所述的用户设备, 其特征在于, 所述互操作策略包 括接入网络发现和选择功能实体 ANDSF策略和 /或 RAN准则。
27、 如权利要求 19-26任意一项所述的用户设备, 其特征在于, 所述互操 作策略的执行条件包括以下至少一个:
如果所述 WLAN不可用或所述 WLAN的信号强度低于第一门限值或所述 WLAN的负载大于第二门限值, 则使用所述互操作策略; 或
接收到所述 RAN的广播指示, 指示所述用户设备使用所述互操作策略。
PCT/CN2013/083988 2013-09-23 2013-09-23 一种选择接入网络的方法及用户设备 WO2015039345A1 (zh)

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