WO2013049996A1 - Procédé, équipement d'utilisateur (ue) et système pour sélectionner un réseau d'accès et unité de politique de sélection de réseaux - Google Patents

Procédé, équipement d'utilisateur (ue) et système pour sélectionner un réseau d'accès et unité de politique de sélection de réseaux Download PDF

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Publication number
WO2013049996A1
WO2013049996A1 PCT/CN2012/082486 CN2012082486W WO2013049996A1 WO 2013049996 A1 WO2013049996 A1 WO 2013049996A1 CN 2012082486 W CN2012082486 W CN 2012082486W WO 2013049996 A1 WO2013049996 A1 WO 2013049996A1
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Prior art keywords
information
network
access
user equipment
selection policy
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PCT/CN2012/082486
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English (en)
Chinese (zh)
Inventor
孙滔
刘大鹏
邓辉
段晓东
侯志强
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中国移动通信集团公司
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Publication of WO2013049996A1 publication Critical patent/WO2013049996A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • Access network selection method user equipment, system, and network selection policy unit
  • the present invention relates to a cellular network and a radio access network technology in the field of communications, and in particular to an access network selection method, a user equipment, a system, and a network selection policy unit.
  • the user equipment (User Equipment) scans the AP (Access Point) information of the WLAN (Wireless Local Area Networks). The user selects the available SSID (Service Set Identifier). WLAN access requires users to participate in complex operations and affects the user experience.
  • AP Access Point
  • SSID Service Set Identifier
  • the network lacks corresponding information.
  • the information of the access network information reported by the terminal is insufficient, for example, the SSID of the nearby WLAN; the network selection policy unit lacks the mechanism for exchanging information with other network elements, and cannot be based on the information and network of the terminal side.
  • the network usage information on the side is used to select the network.
  • the key problem to be solved is how the network selection policy unit on the network side can accurately know the network environment in which the UE is located, including the cellular network where the UE is currently located and other non-3GPP access networks (such as WLAN) in which the UE is located. , WiMAX, etc., the signal strength of each access point.
  • the Chinese invention patent application with the application number 200910090433.X proposes a method for the UE to access the core network through the WLAN access network.
  • the UE first accesses the EPC (Packet Core Network), with Select function) to interact (bring its own location information and capability information), and the ANDSF returns the WLAN access network information (the wireless core network information accessible by the WLAN access network and the WLAN network where the current location of the UE exists) to the UE, and then the UE Establishing a connection with the WLAN access network; when performing authentication, the WLAN access network sends an EAP (Extensible Authentication Protocol) request to the UE, and the UE selects a wireless core network according to the obtained WLAN access network information and its access capability. The corresponding identity is carried in the EAP reply message and returned to the WLAN access network.
  • EAP Extensible Authentication Protocol
  • the Chinese invention patent application with the application number 200910179815.X discloses a method for obtaining access network information.
  • the terminal sends an access network request to the ANDSF, and the ANDSF obtains the access network attribute information from the AAA (Authentication Authorization Accounting Server), and according to the capability of the terminal (the supported protocol type, whether access to the trusted access network is required)
  • the network access attribute information (the protocol supported by the access network and the trust relationship of the access network) selects one or more access networks and sends the access network information to the terminal, and the terminal selects the access according to the received access network information.
  • Network and access the protocol supported by the access network and the trust relationship of the access network
  • the Chinese invention patent application with application number 201010117475.0 refers to a method for selecting a terminal to access an AP.
  • the information of the same UE (including information strength, noise, and transmission power) reported by multiple APs controlled by the AP is collected by the radio access controller AC, and the AP is reselected for a specific UE and dynamically allocated for the AP.
  • the UE carries its own location information and a preferred access network type in the request information to the ANDSF.
  • Information the granularity at which the UE can provide the location information is the cell ID (CelUd), and the ANDSF finds the access network information available in the vicinity of the UE according to the location information provided by the UE.
  • the mapping relationship between access networks (such as WLAN) is shown in Table 1:
  • Table 1 The 3GPP cell ID access type where the UE is located is WLAN.
  • the above mapping relationship only reflects a rough deployment relationship, but does not reflect the specific location of the current location of the UE.
  • the signal strength of the WLAN access network and each WLAN access network so that the network selection policy cannot be provided to the UE in a targeted manner.
  • the information exchanged between the UE and the ANDSF includes only the location and capability information of the UE, and the ANDSF provides the UE with the wireless core network information accessible by the WLAN access network and the current location of the UE.
  • the WLAN network the UE only selects the appropriate access network based on the information, and does not consider the load of the access network, which may cause some APs to be overloaded and affect the overall performance of the network.
  • the above patent application No. 200910179815.X can solve the problem that the UE cannot obtain the attribute information of the access network before the handover and affects the handover efficiency and service continuity of the terminal, and the access network attribute information that the UE can obtain includes The protocol supported by the network access, the trust relationship of the access network, etc., but the load of the access network is not considered.
  • the application of the above-mentioned application number is 201010117475.0.
  • the scheme of the AP is determined by the terminal scanning AP, and the control of the AP on the AP to access the AP is enhanced.
  • the AP load balancing is effective, but the solution is effective only when the UE moves between APs under the same AC control, and load balancing between APs under multiple AC control cannot be implemented.
  • the purpose of the present invention is to solve the defect that the access network has poor access selection effect in the prior art, and propose an access network selection method, a user equipment, a system, and a network selection policy unit, so as to enhance the access network access core network.
  • Technical effect is to solve the defect that the access network has poor access selection effect in the prior art, and propose an access network selection method, a user equipment, a system, and a network selection policy unit, so as to enhance the access network access core network.
  • An access network selection method includes: The network selection policy unit receives a network selection policy request initiated by the user equipment and carries the access network information; the network selection policy unit obtains the access network status information according to the network selection policy request;
  • the network selection policy unit formulates the network selection policy information according to the access network status information, and sends the network selection policy information to the user equipment.
  • the method further includes:
  • the network selection policy unit obtains user configuration information according to the network selection policy request
  • the network selection policy unit generates the network selection policy information according to the access network status information and the user configuration information, and sends the network selection policy information to the user equipment.
  • the access network information includes: the access network information includes: wireless local area network related information, cellular network related information, or location information of the user equipment itself.
  • the WLAN related information includes: service set identifier information,
  • Any one or more of MAC address information, beacon frame information, signal quality, load, and bandwidth information is any one or more of MAC address information, beacon frame information, signal quality, load, and bandwidth information.
  • the cellular network related information includes: one or more of CdUd information, signal quality, load, and bandwidth information of the cellular network.
  • the step of obtaining the access network status information by the network selection policy unit includes: acquiring, by the network management system or the signaling analysis system, load information of the wireless local area network access point identified by the MAC address; or
  • the load information of the cell of the cell identified by Cell_Id is queried through the network management system or the signaling analysis system.
  • the network selection policy unit can also obtain the access network status information directly according to the information reported by the terminal.
  • the step of obtaining the user configuration information by the network selection policy unit comprises: obtaining an accessible service set identifier list from the user information database unit.
  • the step of selecting a network selection policy information by the network selection policy unit includes: when there are multiple available wireless local area network access points in the vicinity of the user equipment, and the access load of the access point is not high, It is recommended to select a wireless LAN access point with a higher priority;
  • the source of the service set identifier in the service set identifier list includes the user subscription and the user equipment report, and the service set identifier reported by the user equipment is obtained by the user equipment according to the service set identifier of the wireless local area network that the user actively selects and uses. .
  • An access network selection method includes:
  • the user equipment detects the access network information in its vicinity, and carries the access network information to initiate a network selection policy request to the network selection policy unit;
  • the user equipment receives the network selection policy information that is selected by the network selection policy unit according to the access network status information.
  • the user equipment receives the network selection policy information that is determined by the network selection policy unit according to the access network status information and the user configuration information.
  • the step of the user equipment detecting the access network information in the vicinity of the user equipment includes: the user equipment detects the wireless local area network related information in the vicinity of the user equipment, the user equipment detects the related information of the cellular network in the vicinity of the user equipment, or the user equipment detects itself. Location information.
  • the WLAN related information includes: one or more of service set identification information, MAC address information, beacon frame information, signal quality, load, and bandwidth information; and the cellular network related information includes: Any one or more of Cell_Id information, signal quality, load, and bandwidth information.
  • the method further includes: collecting information of the service set identifier of the wireless local area network that the user actively selects and historically uses, and reporting the information to the user information database unit.
  • a network selection policy unit includes:
  • a request receiving module configured to receive a network selection policy request initiated by the user equipment to carry the access network information
  • the information obtaining module is configured to obtain the access network status information according to the network selection policy request, and the policy setting module is configured to formulate the network selection policy information according to the access network status information, and send the network selection policy information to the user equipment. .
  • the information obtaining module is further configured to obtain user configuration information, where the policy setting module is further configured to formulate according to the access network status information and user configuration information.
  • the network policy information is selected, and the network selection policy information is sent to the user equipment.
  • the access network information includes: wireless local area network related information, cellular network related information, or location information of the user equipment itself.
  • the WLAN related information includes: service set identifier information,
  • Any one or more of MAC address information, beacon frame information, signal quality, load, and bandwidth information is any one or more of MAC address information, beacon frame information, signal quality, load, and bandwidth information.
  • the cellular network related information includes: one or more of CdUd information, signal quality, load, and bandwidth information of the cellular network.
  • the information obtaining module includes:
  • a first obtaining submodule configured to obtain, by using a network management system or a signaling analysis system, load information of a WLAN access point identified by a MAC address;
  • a second obtaining submodule configured to query, by the network management system or the signaling analysis system, load information of the cell of the cell identified by the Cell_Id.
  • the information obtaining module may further comprise a fourth obtaining sub-module for obtaining the access network status information directly according to the reporting information of the terminal.
  • the information obtaining module further includes:
  • a third obtaining submodule configured to obtain an accessible service set identifier list from the user information database unit.
  • the policy formulation module includes:
  • An access judging module configured to determine a state of a wireless local area network in the vicinity of the user equipment itself and a network state of the cellular network in which the user equipment is located;
  • the access suggestion module is configured to formulate network selection policy information according to the state of the wireless local area network and the network state of the cellular network:
  • the source of the service set identifier in the service set identifier list includes the user subscription and the user equipment report, and the service set identifier reported by the user equipment is obtained by the user equipment according to the service set identifier of the wireless local area network that the user actively selects and uses. .
  • a user equipment is provided.
  • the user equipment according to the embodiment of the present invention includes:
  • the probe requesting module is configured to detect access network information in the vicinity of the network, and carry the access network information to initiate a network selection policy request to the network selection policy unit;
  • the policy receiving module is configured to receive the network selection policy information that is selected by the network selection policy unit according to the access network status information.
  • the policy receiving module is further configured to receive the network selection policy information that is determined by the network selection policy unit according to the access network status information and the user configuration information.
  • the probe request module includes:
  • a first detecting module configured to detect information related to the wireless local area network in the vicinity thereof; or a second detecting module, configured to detect information about the cellular network in the vicinity thereof; or
  • the third detecting module is configured to detect the location information of the user.
  • the WLAN related information includes: one or more of service set identification information, MAC address information, beacon frame information, signal quality information, load, and bandwidth; and the cellular network related information includes: Any one or more of Cell_Id information, signal quality, load, and bandwidth information.
  • the user equipment further includes:
  • the identifier collection module is configured to collect the information of the service set identifier of the wireless local area network that the user actively selects and historically uses, and reports the information to the user information database unit.
  • an access network selection system is provided.
  • the network selection policy unit is configured to receive a network selection policy request initiated by the user equipment and carry the access network information, obtain the access network status information according to the network selection policy request, and formulate the network selection policy information according to the access network status information, and Sending the network selection policy information to the user equipment;
  • the network policy unit initiates a network selection policy request, and receives the network selection policy information determined by the network selection policy unit according to the access network status information.
  • the network selection policy unit is further configured to obtain user configuration information, and formulate network selection policy information according to the access network status information and the user configuration information;
  • the user equipment is further configured to receive the network selection policy information that is determined by the network selection policy unit according to the access network status information and the user configuration information.
  • system further includes:
  • a network status obtaining unit configured to periodically collect related load information of each network element
  • the user information base unit is configured to store the service set identifier and the service set identifier reported by the user equipment.
  • the network selection policy unit includes:
  • a request receiving module configured to receive a network selection policy request initiated by the user equipment to carry the access network information
  • An information obtaining module configured to obtain access network status information and user configuration information according to the network selection policy request
  • a policy setting module configured to formulate a network selection policy information according to the access network status information and the user configuration information, and send the network selection policy information to the user equipment;
  • the information obtaining module includes:
  • a first obtaining submodule configured to obtain, by using a network management system or a signaling analysis system, load information of a WLAN access point identified by a MAC address;
  • a second obtaining submodule configured to query, by using a network management system or a signaling analysis system, load information of a cell of the cell identified by the Cell_Id;
  • a third obtaining submodule configured to obtain an accessible service set identifier list from the user information database unit.
  • the information obtaining module may further comprise a fourth obtaining sub-module for obtaining the access network status information directly according to the reporting information of the terminal.
  • the policy formulation module includes:
  • An access judging module configured to determine a state of a wireless local area network in the vicinity of the user equipment itself and a network state of the cellular network in which the user equipment is located;
  • An access suggestion module configured to determine the state of the wireless local area network and the state of the cellular network Network selection policy information:
  • the cellular network cell where the user equipment is located is strong but the access load is high, it is recommended to preferentially access the wireless local area network.
  • the source of the service set identifier in the service set identifier list includes the user subscription and the user equipment report, and the service set identifier reported by the user equipment is obtained by the user equipment according to the service set identifier of the wireless local area network that the user actively selects and uses. .
  • the user equipment includes:
  • the probe requesting module is configured to detect access network information in the vicinity of the network, and carry the access network information to initiate a network selection policy request to the network selection policy unit;
  • a policy receiving module configured to receive network selection policy information that is selected by the network selection policy unit according to the access network status information and the user configuration information;
  • the probe request module includes:
  • a first detecting module configured to detect information related to the wireless local area network in the vicinity thereof; or a second detecting module, configured to detect information about the cellular network in the vicinity thereof; or
  • the third detecting module is configured to detect the location information of the user.
  • the WLAN related information includes: one or more of service set identification information, MAC address information, beacon frame information, signal quality, load, and bandwidth information; and the cellular network related information includes: Any one or more of Cell_Id information, signal quality, load, and bandwidth information.
  • the user equipment further includes:
  • the identifier collection module is configured to collect the information of the service set identifier of the wireless local area network that the user actively selects and historically uses, and reports the information to the user information database unit.
  • the UE reports multiple access network information, such as UE location information (Cell_Id), and MAC address of the corresponding AP of the WLAN SSID, to the network selection policy unit. Address, signal strength, beacon frame, load, bandwidth, etc.
  • Cell_Id UE location information
  • MAC address of the corresponding AP of the WLAN SSID
  • the network policy unit can fully learn the access network information of the location where the UE is located; the UE implements the capability extension, detects the MAC address of the WLAN AP under a certain SSID, and reports it to the selected network policy unit, such as ANDSF; The SSID list of the WLAN selected and used by the history is reported to the user information database unit in the core network in a certain period of time; the network selection policy unit directly obtains the network information according to the reported information, or according to the access network information provided by the UE, such as an AP.
  • the MAC address and the Cell_Id of the cellular network obtain the corresponding status information of the access network, and select the optimal WLAN access AP for the user, for example, select the AP with light load according to the number of connected or active users on the WLAN AP. .
  • FIG. 1 is a flowchart of an embodiment of an access network selection method according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of an embodiment of an access network selection system according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of an embodiment of an access network selection method according to an embodiment of the present invention. As shown in FIG. 1, this embodiment includes:
  • Step S102 The UE detects the access network information in the vicinity of the UE: the UE detects the WLAN near the UE.
  • UE detects cellular network related information near the UE, such as Cell_Id of cellular network, signal quality, load, bandwidth And other related indicators; the UE detects its own location information, such as GPS.
  • the UE records the user's selection preference for each access network and reports it to the user information database unit, such as a service set identifier (SSID) accessible by the UE and its access frequency list;
  • SSID service set identifier
  • Step S104 The UE carries the access network information to initiate the network selection policy request to the network selection policy unit: the UE initiates a request to the network selection policy unit, and the detected access network related information is carried in the message and sent to the network selection policy unit.
  • the information indicated by the beacon frame includes information such as whether the WLAN is free and can access the Internet;
  • the location of the UE such as GPS information
  • the access network selection method and apparatus of the present invention the core processing unit and the selected network policy unit are in the core network in the mobile communication network, and through various access networks (including cellular networks and non-3GPP interfaces) Network access, such as WLAN, WiMAX, etc.) is connected to the UE;
  • various access networks including cellular networks and non-3GPP interfaces
  • Network access such as WLAN, WiMAX, etc.
  • Step S106 The network selection policy unit obtains the access network status information and the user configuration information: after receiving the request of the UE, the network selection policy unit directly obtains the network information according to the reported information, or queries the access network load by using the network status acquisition unit.
  • the information such as the load information of the corresponding WLAN AP, such as the service traffic, the current access or the number of active users, is obtained from the network management system according to the MAC address provided by the terminal, and the cellular network identified by the Cdl_Id is queried through the network management system, the signaling analysis system, and the like.
  • Load information is obtained from the network management system according to the MAC address provided by the terminal, and the cellular network identified by the Cdl_Id is queried through the network management system, the signaling analysis system, and the like.
  • the network selection policy unit obtains user related information, such as a list of accessible SSIDs, from the user information database unit;
  • Step S108 The network selection policy unit formulates the network selection policy information according to the access network status information and the user configuration information: the network selection policy unit combines according to the obtained load status of each access network and the access network information that the user is allowed to access. The information about the signal strength and user preference of each access network provided by the UE itself is used to formulate a corresponding access network selection strategy;
  • the access policy is determined according to the priority of the SSID in the SSID list:
  • the established policy form is as follows: priority access to the WLAN, and the priority of accessing the cellular network is lowered;
  • the network selection policy unit sends the network selection policy information to the UE:
  • the sending mode can be connected through an IP connection, such as an existing S14 interface or a short message manner; the UE performs network selection according to the network selection policy information, if the network is connected If the entry fails, the user can be informed to make a manual network selection.
  • the present invention further provides another embodiment, which describes in detail the process of acquiring the state information of the access network in step S106 in the foregoing embodiment of FIG. 1:
  • a network state storage unit capable of storing load information of each access network is connected to a network selection policy unit, and the network state storage unit periodically collects related load information of each network element, where the network state storage unit includes a network management system, Correlation analysis unit such as signaling analysis system.
  • the load information for the specific AP returned by the network status storage unit to the network selection policy unit is as shown in Table 3:
  • the SSID accessible by the user of the UE has two update modes: one is that the network informs the UE that the SSID can be accessed, and the other is user autonomy. The SSID that was selected and successfully accessed.
  • the UE maintains the SSID list according to the usage characteristics of the user.
  • the list can be set according to the frequency of use of the SSID in the SSID list.
  • the user can also manually or automatically manage the list.
  • the UE will report the SSID list in a certain period. .
  • the user information database unit connected to the network selection policy unit is in the core network together with the network selection policy unit and the network state acquisition unit, and the user information database unit stores the SSID list that the user is allowed to access, and the source of the SSID list has two sources. : User signing and user side reporting.
  • the UE reports multiple access network information to the network selection policy unit, such as UE location information (such as Cell_Id, GPS, etc.), MAC address of the corresponding AP of the WLAN SSID, signal strength, beacon frame, Load, bandwidth, etc., so that the network selection policy unit can fully learn the access network information of the location where the UE is located; the UE implements the capability extension, detects the MAC address of the WLAN AP under an SSID, and reports it to the network selection policy unit, such as ANDSF, etc.; the UE will report to the user information database unit in the core network in a certain period of time according to the SSID list of the WLAN that the user actively selects and uses in history; the network selection policy unit according to the access network information provided by the UE, or through the AP
  • the MAC address and the CellU's CelUd obtain the corresponding status information of the access network, and select the optimal WLAN access AP for the user. For example, select the AP with light load
  • a network selection policy unit includes: a request receiving module, configured to receive a network selection policy request initiated by the user equipment and carry the access network information;
  • An information obtaining module configured to obtain access network status information and user configuration information according to the network selection policy request
  • the policy setting module is configured to generate the network selection policy information according to the access network status information and the user configuration information, and send the network selection policy information to the user equipment.
  • the access network information includes: a wireless local area network (WLAN, etc.) related information, a cellular network related information, or a location information of a user equipment (UE);
  • WLAN wireless local area network
  • UE user equipment
  • the information acquisition module includes:
  • a first obtaining submodule configured to obtain, by using a network management system or a signaling analysis system, load information of a WLAN access point identified by a MAC address;
  • a second obtaining submodule configured to query, by the network management system or the signaling analysis system, load information of the cell of the cell identified by the Cell_Id.
  • the information acquisition module also includes:
  • a third obtaining submodule configured to obtain an accessible service set identifier list from the user information base unit.
  • the information obtaining module may further comprise a fourth obtaining sub-module for obtaining the access network status information directly according to the reporting information of the terminal.
  • the strategy development module includes:
  • An access judging module configured to determine a state of a wireless local area network in the vicinity of the user equipment itself and a network state of the cellular network in which the user equipment is located;
  • the access suggestion module is configured to formulate network selection policy information according to the state of the wireless local area network and the network state of the cellular network:
  • the WLAN access load that is accessible in the vicinity of the user equipment itself is high or the signal is not strong, and the cellular network cell where the user equipment is located is strong and the access load is low, it is recommended to access the cellular network;
  • the cellular network cell where the user equipment is located is strong but the access load is high, it is recommended to preferentially access the wireless local area network.
  • the source of the service set identifier in the service set identifier list includes the user subscription and the user equipment report.
  • the service set identifier reported by the user equipment is obtained by the user equipment according to the service set identifier of the wireless local area network actively selected by the user and used by the user.
  • a user equipment includes:
  • the probe requesting module is configured to detect access network information in the vicinity of the network, and carry the access network information to initiate a network selection policy request to the network selection policy unit;
  • the policy receiving module is configured to receive the network selection policy information that is selected by the network selection policy unit according to the access network status information and the user configuration information.
  • the probe request module includes:
  • a first detecting module configured to detect information related to the wireless local area network in the vicinity thereof; or a second detecting module, configured to detect information about the cellular network in the vicinity thereof; or
  • a third detecting module configured to detect location information of the user
  • An information recording module configured to record user selection preference information for each access network
  • the cellular network related information includes: one or more of Cell_Id information, signal quality, load, and bandwidth information of the cellular network;
  • the WLAN related information includes: one or more of service set identification information, MAC address information, beacon frame information, signal quality, load, and bandwidth information.
  • the above user equipment further includes:
  • the identifier collection module is configured to collect the information of the service set identifier of the wireless local area network that the user actively selects and historically uses, and reports the information to the user information database unit.
  • the UE reports multiple access network information, such as UE location information (Cell_Id), WLAN SSID corresponding AP MAC address, signal strength, beacon frame, load, bandwidth, to the network selection policy unit.
  • Cell_Id UE location information
  • WLAN SSID corresponding AP MAC address
  • signal strength e.g.
  • beacon frame e.g.
  • bandwidth e.g.
  • the network selection policy unit can fully learn the access network information of the location of the UE
  • the UE implements the capability extension, detects the MAC address of the WLAN AP under a certain SSID, and reports it to the network selection policy unit, such as ANDSF;
  • the UE will report the user information in the core network to the core network in a certain period of time according to the SSID list of the WLAN that the user actively selects and uses.
  • the network selection policy unit obtains the corresponding state information of the access network according to the access network information provided by the UE, such as the MAC address of the AP and the Cell_Id of the cellular network, to select an optimal WLAN access AP for the user, such as according to the WLAN.
  • the number of connected or active users on the AP is selected to access the AP with lighter load.
  • an access network selection system includes:
  • the network selection policy unit is configured to receive a network selection policy request initiated by the user equipment and carry the access network information, obtain the access network status information and user configuration information according to the network selection policy request, and obtain the access network status information and the user configuration according to the access network status
  • the information of the network selection policy is formulated, and the network selection policy information is sent to the user equipment;
  • a user equipment User Equipment, g ⁇ UE
  • g ⁇ UE User Equipment
  • g ⁇ UE User Equipment
  • the foregoing access network selection system further includes:
  • the user information database unit is configured to store the service set identifier and the service set identifier reported by the user equipment.
  • the network status obtaining unit is configured to periodically collect related load information of each network element.
  • the network selection strategy unit includes:
  • a request receiving module configured to receive a network selection policy request initiated by the user equipment to carry the access network information
  • An information obtaining module configured to obtain access network status information and user configuration information according to the network selection policy request
  • a policy setting module configured to formulate a network selection policy information according to the access network status information and the user configuration information, and send the network selection policy information to the user equipment;
  • the information acquisition module includes:
  • a first obtaining submodule configured to obtain, by using a network management system or a signaling analysis system, load information of a WLAN access point identified by a MAC address;
  • a second obtaining submodule configured to query, by using a network management system or a signaling analysis system, load information of a cell of the cell identified by the Cell_Id;
  • a third obtaining submodule configured to obtain an accessible service set identifier list from the user information database unit.
  • the information obtaining module may further comprise a fourth obtaining sub-module for obtaining the access network status information directly according to the reporting information of the terminal.
  • the strategy development module includes:
  • An access judging module configured to determine a state of a wireless local area network in the vicinity of the user equipment itself and a network state of the cellular network in which the user equipment is located;
  • the access suggestion module is configured to formulate network selection policy information according to the state of the wireless local area network and the network state of the cellular network:
  • the cellular network cell where the user equipment is located is strong but the access load is high, it is recommended to preferentially access the wireless local area network.
  • the source of the service set identifier in the service set identifier list includes the user subscription and the user equipment report.
  • the service set identifier reported by the user equipment is obtained by the user equipment according to the service set identifier of the wireless local area network actively selected by the user and used by the user.
  • User Equipment includes:
  • the probe requesting module is configured to detect access network information in the vicinity of the network, and carry the access network information to initiate a network selection policy request to the network selection policy unit;
  • a policy receiving module configured to receive network selection policy information that is selected by the network selection policy unit according to the access network status information and the user configuration information;
  • the probe request module includes:
  • a first detecting module configured to detect information related to the wireless local area network in the vicinity thereof; or a second detecting module, configured to detect information about the cellular network in the vicinity thereof; or
  • a third detecting module configured to detect location information of the user
  • An information recording module configured to record user selection preference information for each access network
  • Cellular network related information includes: Cell_Id information, signal quality, load, and bandwidth information of the cellular network Any one or more of the interest;
  • the WLAN related information includes: one or more of service set identification information, MAC address information, beacon frame information, signal quality, load, and bandwidth information.
  • User Equipment also includes:
  • the identifier collection module is configured to collect the information of the service set identifier of the wireless local area network that the user actively selects and historically uses, and reports the information to the user information database unit.
  • the UE reports multiple access network information to the network selection policy unit, such as UE location information (Cell_Id, GPS, etc.), MAC address of the corresponding AP of the WLAN SSID, signal strength, beacon frame, and load. And the bandwidth, etc., so that the network selection policy unit can fully learn the access network information of the location where the UE is located; the UE implements the capability extension, detects the MAC address of the WLAN AP under an SSID, and reports it to the selected network policy unit, such as ANDSF.
  • the UE will report to the user information database unit in the core network in a certain period of time according to the SSID list of the WLAN that the user actively selects and uses.
  • the network selection policy unit is based on the access network information provided by the UE, such as the MAC of the AP.
  • the address and the network's CelUd obtain the corresponding status information of the access network, and select the optimal WLAN access AP for the user. For example, the AP with a lighter load is selected according to the number of connected or active users on the WLAN.

Landscapes

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

Abstract

L'invention concerne un procédé, un équipement d'utilisateur (UE) et un système pour sélectionner un réseau d'accès et une unité de politique de sélection de réseaux, qui comprend les étapes suivantes : l'unité de politique de sélection de réseaux reçoit une demande de politique de sélection de réseaux déclenchée par l'UE et portant les informations de réseau d'accès; l'unité de politique de sélection de réseaux obtient les informations d'état de réseau d'accès et les informations de configuration d'utilisateur selon la demande de politique de sélection de réseaux; l'unité de politique de sélection de réseaux établit les informations de politique de sélection de réseaux selon les informations d'état de réseau d'accès et les informations de configuration d'utilisateur et distribue les informations de politique de sélection de réseaux à l'UE. Selon le procédé, l'équipement d'utilisateur (UE) et le système pour sélectionner le réseau d'accès et l'unité de politique de sélection de réseaux de l'invention, l'unité de politique de sélection de réseaux peut obtenir complètement la position de l'UE et les informations de réseau d'accès; l'UE détecte l'adresse MAC de l'AP WLAN et signale l'adresse MAC de l'AP WLAN à l'unité de politique de sélection de réseaux; l'UE signale la liste des SSID d'accès fréquents à l'unité de base de données d'informations d'utilisateur pendant une certaine période; l'unité de politique de sélection de réseaux sélectionne le meilleur WLAN pour l'utilisateur en vue d'accéder à l'AP selon les informations de réseau d'accès communiquées par l'UE. DRWAWING: FIG. 1: S102 L'UE détecte les informations de réseaux d'accès voisins S104 L'UE déclenche la demande de politique de sélection de réseaux comprenant les informations de réseau d'accès pour l'unité de politique de sélection de réseaux S106 L'unité de politique de sélection de réseaux obtient les informations d'état de réseau d'accès et les informations de configuration d'utilisateur S108 L'unité de politique de sélection de réseaux établit les informations de politique de sélection de réseaux selon les informations d'état de réseau d'accès et les informations de configuration d'utilisateur S110 L'unité de politique de sélection de réseaux distribue les informations de politique de sélection de réseaux à l'UE AA Début BB Fin
PCT/CN2012/082486 2011-10-08 2012-09-29 Procédé, équipement d'utilisateur (ue) et système pour sélectionner un réseau d'accès et unité de politique de sélection de réseaux WO2013049996A1 (fr)

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