WO2009074013A1

WO2009074013A1 - Method and apparatus for selecting access network

Info

Publication number: WO2009074013A1
Application number: PCT/CN2008/001956
Authority: WO
Inventors: Tinlin Lee; Zhi Rui
Original assignee: China Mobile Communications Corporation
Priority date: 2007-11-30
Filing date: 2008-12-01
Publication date: 2009-06-18

Abstract

A method and an apparatus for selecting an access network, the method of the present invention including following steps: according to a service type of a service requested by a mobile terminal, inquiring a list of corresponding relationship between the service type and the access network, and obtaining a corresponding access network; assigning the access network obtained to bear the service requested by the mobile terminal. With the present invention, an access network suitable for the characteristic of the service is assigned to the mobile terminal according to the characteristic of the service requested by the mobile terminal, thus the advantage of different access networks bearing different services may be exerted.

Description

Method and device for selecting access network

Technical field

The present invention relates to the field of communications, and in particular, to a method for selecting an access network, a network device, and a mobile terminal. Background technique

In the case of multiple network multiple access, the mobile terminal selects a transmission mode and an access network according to the strength of the network signal.

It is proposed in 3GPP TR36.938 that IP-based 3GPP services can be provided through a variety of access technologies, including the use of existing broadband wireless access standards, such as IEEE 802.16e/ETSI BRAN, and 3GPP2 HRPD or lxRTT. To this end, 3GPP began to study the mobility issues between E-UTRAN (Dynamic Universal Mobile Telecommunications System Terrestrial Radio Access Network) and 3GPP2 Mobile WiMAX (Worldwide Microwave System) different access technologies. The solutions currently under discussion in 3GPP, as well as existing solutions, focus on the choice of using certain network access based on the signal strength of the network.

At present, this technology of selecting an access network according to signal strength results in that the selected network is not necessarily suitable for the characteristics of the carried service. This way of choosing to access the network does not reflect the advantages of different networks carrying different services. Moreover, in the process of selecting an access network, a signaling interaction is required between the mobile terminal and the network, thereby causing a delay. Summary of the invention

The embodiment of the invention provides a method for selecting an access network and a device thereof, which are used to solve the problem that the network selected in the prior art may be unsuitable for the carried service, which may not reflect the advantages of different networks carrying different services. .

The method for selecting an access network provided by the embodiment of the present invention includes the following steps:

Querying a correspondence table between the service type and the access network according to the service type of the service requested by the mobile terminal, and acquiring a corresponding access network; Specifying the obtained access network to carry the service requested by the mobile terminal.

The mobile terminal provided by the embodiment of the present invention includes:

a storage module, configured to store a correspondence table between the service type and the access network;

a querying module, configured to query the corresponding relationship table according to the service type of the service requested by the mobile terminal, and obtain an access network corresponding to the service type;

And a network selection module, configured to specify that the access network carries the service requested by the mobile terminal. The network device provided by the embodiment of the present invention includes:

And an assignment module, configured to assign the acquired access network to the service requested by the mobile terminal. The foregoing embodiment of the present invention selects a bearer network for the service requested by the mobile terminal according to the correspondence between the service type and the access network, so that the selected network is suitable for carrying the service requested by the mobile terminal, thereby exerting different network bearers. The advantages of different businesses. DRAWINGS

1 is a schematic flowchart of a mobile terminal selecting an access network according to Embodiment 1 of the present invention; FIG. 2 is a schematic structural diagram of a mobile terminal according to Embodiment 1 of the present invention;

3 is a schematic flowchart of a correspondence table between a scanning measurement update service type and an access network in a mobile terminal according to Embodiment 2 of the present invention;

4 is a schematic flowchart of a mobile terminal selecting an access network according to Embodiment 2 of the present invention; FIG. 5 is a schematic structural diagram of a mobile terminal according to Embodiment 2 of the present invention;

6 is a schematic flowchart of selecting an access network according to Embodiment 3 of the present invention;

7 is a schematic structural diagram of a network device according to Embodiment 3 of the present invention;

8 is a schematic flowchart of selecting an access network according to Embodiment 4 of the present invention;

FIG. 9 is a schematic structural diagram of a network device according to Embodiment 4 of the present invention. detailed description

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Embodiment 1

In this embodiment, the mobile terminal selects an access network that carries a specific service according to the correspondence between the service type and the access network, thereby fully utilizing the advantages of different access networks carrying different services, and reducing network delay.

In this embodiment, a correspondence table between a service type and an access network (hereinafter referred to as a correspondence relationship table) is stored on the mobile terminal, and each service type corresponds to one access network in the correspondence relationship table. The matching of the service type and the network can be determined according to the data rate of the service, the QoS (service shield) requirement, the security requirement, and the like. For example, the voice service (represented as ServiceType1 in Table 1) may correspond to a GSM (Global System for Mobile Communications) network or a WCDMA (Wideband Code Division Multiple Access System) network (represented as Networkl in Table 1), a web browsing service (Table 1) The middle is represented as ServiceType2) and can correspond to the WiMAX network (shown as Network2 in Table 1). Table 1 gives an example of a correspondence table: Table 1

The mobile terminal can obtain the correspondence table in the following manner:

Manner 1: When the mobile terminal first accesses the network, the initial correspondence table is downloaded from the network side. The download process can use existing processes such as the OTA (Over-The-Air) process, ie, the air interface to SIM (Subscriber Identity Module) card data and applications via mobile communication (eg GSM or CDMA) systems Remote management. The air interface can use WAP (Wireless Access Protocol), GPRS (General Packet Radio Service), CDMA lx and short message technology to dynamically download the correspondence table in the SIM card through the mobile terminal or server (online).

Manner 2: The correspondence table is pre-existing in the terminal, for example, it can be correspondingly closed by the mobile terminal manufacturer. The system is pre-configured in a customized mobile terminal.

In order to update the correspondence table in time to adapt to the correspondence between the new service type and the network, or to adjust the corresponding relationship between the existing service type and the network, the embodiment of the present invention provides the following manner for updating the correspondence table saved in the mobile terminal: when the mobile terminal obtains After the correspondence table is updated, the list is updated by the OTA process, such as using WAP, GPRS, CDMA lx and short message technology, and dynamically downloading and updating the correspondence table in the SIM card through the mobile terminal or the server (online).

When the mobile terminal initiates a service request, the process of selecting the access network by the mobile terminal according to the correspondence table may be as shown in FIG. 1.

FIG. 1 is a schematic flowchart of a mobile selective access network according to Embodiment 1 of the present invention, where specific steps include:

Step 101: The mobile terminal requests to use a certain service.

Step 102: The mobile terminal searches for a network ID corresponding to the service type in the correspondence relationship table according to the type of the service.

Step 103: The mobile terminal scans a network corresponding to the network ID. Normally, the mobile terminal can scan to the network. If it cannot be scanned, the existing method can be used to select the access network.

Step 104: The mobile terminal designates the found available access network as a service bearer network, connects to the network, and carries the requested service on the network.

In order to implement the above process, the structure of the mobile terminal in Embodiment 1 can be as shown in FIG. 2.

FIG. 2 is a schematic structural diagram of a mobile terminal 2 according to Embodiment 1 of the present invention. The mobile terminal includes: a storage module 21, a query module 22, and a network selection module 23, where:

The storage module 21 is configured to store a correspondence table between the service type and the access network, where the correspondence table may be pre-configured in the storage module 21; the correspondence table may be as shown in Table 1, including the service type identifier and the corresponding access. Network identification

The query module 22 is configured to query the correspondence table according to the service type of the service requested by the mobile terminal, and find an access network corresponding to the service type according to the correspondence relationship table;

The network selection module 23 is configured to: after the query module 22 finds the corresponding access network, specify the access network to carry the requested service. The mobile terminal 2 may further include a scan determining module 24, configured to determine whether the access network is available through the access network found by the scan query module 22, and if available, notify the network selection module 23 to specify the connection. The incoming network carries the requested service.

The mobile terminal 2 may further include a receiving module 25 for downloading the receiving correspondence table from the network side and storing it in the storage module 21. The module can also update the local correspondence table by downloading the corresponding relationship table from the network side. The download method can be 0 TA mode.

Embodiment 2

In this embodiment, a mapping table is stored on the mobile terminal, where each service type corresponds to one or a group of access network identifiers. The matching of the service type and the network can be determined according to the data rate of the service, the QoS requirement, the security requirement, and the like. Table 2 gives an example of a correspondence table:

Table 2

The priority ID in Table 2 indicates the degree of matching between the network and the service type, and the higher the priority (the highest priority in this embodiment is 1), indicating that the network is more suitable for carrying this type of service. The priority ID entry is optional. When there is no such entry, the network ID can be ranked according to the priority level of the service carrying the type of service. The top row indicates that the network is most suitable for carrying the type of service. The following is followed by the next.

The manner in which the mobile terminal obtains the correspondence table is the same as described above, including downloading the initial pair from the network side. The relationship table, or the preset correspondence table in the mobile terminal.

In order to update the correspondence table in time to adapt to the correspondence between the new service type and the network, or to adjust the correspondence between the existing service type and the network, the embodiment of the present invention provides the following in addition to updating the correspondence table through the OTA process as described above. The method updates the correspondence table saved in the mobile terminal: after obtaining the correspondence table, the mobile terminal updates the correspondence table by periodically scanning the measurement or triggering the scan measurement by the event. The periodic scan measurement is like the periodic scan measurement in the live network. In this embodiment, the mobile terminal scans all available networks; the event-triggered scan measurement includes mter-RAT handover (inter-radio access network handover), intra-RAT handover The scanning measurement process is triggered after switching between wireless access networks. The process of specifically scanning the measurement update correspondence table may be as shown in FIG. 3, including the steps:

Step 301: The mobile terminal scans and measures all available networks.

Step 302: The mobile terminal compares the available network that is scanned and measured with the network in the corresponding relationship table. If the scan measurement result indicates that the network in the correspondence table is unavailable, step 303 is performed; if the available network obtained by the scan measurement is not corresponding In the relationship table, step 304 is performed;

Step 303: Eliminate a network that is not available in the list according to the result of the scan measurement.

Step 304: Add the network that is not available in the correspondence table to the list. In the process of joining the network ID, the network ID may be added to the network ID corresponding to each service type; or the network ID may be according to a preset policy (such as which service type or types of services the network can correspond to) Corresponds to the corresponding business type.

Preferably, if the service type corresponds to a group of access networks, the priority of a group of networks corresponding to the service type may be adjusted according to the signal strength of the network obtained by the scan measurement, such as setting a threshold, network signal strength. If the threshold is exceeded, the priority of the network is increased by one level. If the network signal strength is lower than the threshold, the priority of the network is lowered by one level. At the same time, the priority of the service matching type may be further updated, for example, if the network signal strength exceeds a preset threshold, and the network has a high degree of matching with the type of service (the matching degree is high and the cocoa according to the data rate and QoS of the service) Determine the priority of the network by a requirement or security requirement; if the network signal strength exceeds a preset threshold, but the network and the type of industry If the matching degree is low, the current priority of the network can be maintained. Through the above update process, the access network corresponding to the service type is prioritized from the matching degree with the service and the network signal strength, so that the most suitable bearer network can be selected for the service requested by the mobile terminal.

When the mobile terminal initiates a service request, the process of selecting the access network by the mobile terminal according to the correspondence table may be as shown in FIG. 4.

FIG. 4 is a schematic flowchart of a mobile terminal selecting an access network according to Embodiment 2 of the present invention, where specific steps include:

Step 401: The mobile terminal requests to use a certain service.

Step 402: The mobile terminal searches for the network corresponding to the service type in the corresponding relationship table according to the type of the service. If the service type corresponds to a group of network IDs, the corresponding service type is searched according to the priority from high to low. Network ID;

Step 403: The mobile terminal scans the network corresponding to the found network ID, and determines whether the network is available. If the network is unavailable, step 404 is performed; if the network is available, step 407 is performed;

Step 404: Determine whether there is a network ID of the next priority in the group of network IDs corresponding to the service type, if yes, go to step 405; otherwise, go to step 406;

Step 405: The mobile terminal continues to search for the network ID of the priority corresponding to the service type in the corresponding relationship table, and returns to step 403.

Step 406: The mobile terminal selects an access network according to an existing manner.

Generally, the mobile terminal can scan the network. If all the networks corresponding to the service type listed in the list are not scanned, the existing mode can be used to access the network.

Step 407: The mobile terminal designates the available access network that is found as a service bearer network, connects to the network, and carries the requested service on the network.

In order to implement the above process, the structure of the mobile terminal in Embodiment 2 can be as shown in FIG. 5.

The mobile terminal 5 shown in FIG. 5 includes: a storage module 51, a query module 52, and a network selection module 53, wherein:

The storage module 51 is configured to store a correspondence table between the service type and the access network, where the correspondence table may be pre-configured in the storage module 51. The correspondence table may be as shown in Table 2, including the service type. The identification and the corresponding access network ID, the service type identifier may correspond to one or more access network IDs; when one service type identifier corresponds to multiple access networks, the access networks respectively have priority;

The query module 52 is configured to query the correspondence table according to the service type of the service requested by the mobile terminal, and determine an access network corresponding to the service type according to the table; the query module 52 may be based on the priority of the access network. Select the access network in order of priority from high to low;

The network selection module 53 is configured to: after the query module 52 finds the corresponding access network, specify the access network to carry the requested service.

The foregoing mobile terminal may further include a scan determining module 54 configured to determine, by using an access network selected by the scan query module 52, whether the access network is available when the service type corresponds to multiple access networks; if available, The notification network selection module 53 specifies that the access network carries the requested service; otherwise, the notification query module 52 searches the corresponding relationship table for the access network corresponding to the priority of the service type.

The mobile terminal may further include a receiving module 55, configured to download and receive a correspondence table from the network side, and store the data in the storage module 51. The download method can be OTA mode. If the correspondence table already exists in the storage module 51, the receiving module 55 will update the correspondence table in the storage module 51 with the downloaded correspondence table.

The mobile terminal may further include an update module 56, configured to receive a scan result obtained by the mobile terminal scanning all networks, and update a correspondence table in the storage module 51 according to a scan result obtained by scanning all access networks. The mobile terminal can scan all access networks according to the set period, or trigger scanning of all access networks according to the set event. The update module 56 can include a first update submodule and a second update submodule, and can further include a third update submodule (each update submodule is not shown in the figure), where:

The first update submodule is configured to: when the scan result indicates that the access network in the correspondence table is unavailable, the access network is removed from the correspondence relationship table; and the second update submodule is configured to: when the scanned access network is not in the corresponding relationship In the table, the network is added to the corresponding relationship table. The third update sub-module is configured to update the corresponding network signal strength according to the scanned network when the service type corresponds to multiple access networks. The priority of the multiple access networks corresponding to the service type in the relationship table. Preferably, the priority of the network may be further updated according to the matching degree between the network and the service type.

In the first embodiment and the second embodiment, the mobile terminal selects a network that carries a specific service according to the correspondence between the service type and the access network, and fully utilizes the advantages of different networks to carry different services, so that each service is most suitable. The transmission is carried over the network. Moreover, the mobile terminal does not need to specify which network to use for the terminal by the network side, so that the delay and signaling overhead caused by the network side and the terminal communication are not generated, compared with the prior art.

Embodiment 3

In this embodiment, the mobile terminal assigns an access network carrying a specific service to the mobile terminal according to the corresponding relationship between the service type and the access network, so that the service requested by the mobile terminal is assigned an access network suitable for the bearer, and the different access interfaces are fully utilized. The advantages of entering the network to carry different services.

In this embodiment, a logical entity is set on the network side, which is called a Multi-RAT coordinator (multiple

The RAT coordinator, that is, the multiple radio access coordinator, hereinafter referred to as the coordinator). The coordinator can be implemented by a new independent network entity or integrated into a network entity in an existing network, typically integrated into a network entity in the access network. If the coordinator is implemented by an independent network entity, the coordinator can communicate with multiple radio access networks; if the coordinator is implemented by a network entity in the live network, the coordinator can communicate with other radio accesses Telecommunication.

The coordinator stores a correspondence table between the service type and the access network, as shown in Table 1. In the correspondence table, each service type corresponds to one access network. The matching between the service type and the network can be determined according to the data rate, QoS requirements, security requirements, and the like of the service.

The coordinator can create a correspondence table in the following ways:

Manner 1: If the coordinator is implemented by an independent network entity, the network accessing the network is obtained by communicating with all access networks in the jurisdiction, such as requesting each access network to report network information, and obtaining the network accessing the network from the information reported by each access network. ID, establishes the correspondence between the network ID and the type of service that can be provided, and saves it in the form of a correspondence table. If the coordinator is implemented by a network entity in the current network, the network ID of the access network is obtained from the network information reported by each access network by communicating with other access networks, such as requesting other access networks to report network information. , get the network ID of other access networks, build The correspondence between the network ID and the type of service that can be provided is saved in the form of a correspondence table. Method 2: Configure the correspondence table in the coordinator in advance.

Further, the correspondence table in the coordinator may be updated, for example, providing a communication interface on the coordinator, by which the system administrator can update the correspondence on the coordinator according to the service and network attributes by using a web or the like. Relationship table, to increase the correspondence between new service types and networks or to adjust the correspondence between existing service types and networks.

When the mobile terminal initiates a service request, the process in which the coordinator assigns the mobile terminal to the network according to the correspondence table may be as shown in FIG. 6.

FIG. 6 is a schematic flowchart of selecting an access network according to Embodiment 3 of the present invention, where specific steps include:

Step 601: The mobile terminal initiates a service request.

Step 602: The mobile terminal sends information related to the service, such as QoS, security requirements, or data rate.

In this step, if the coordinator is implemented by an independent network entity, the mobile terminal may send the service request and the service-related information to the initially accessed network, and the network forwards the service request and the service-related information to the coordinator; If the coordinator is integrated into a network entity in the network that the mobile terminal initially accesses, the coordinator can receive the service request initiated by the mobile terminal and the service related information.

Step 603: The coordinator determines, according to the service related information sent by the mobile terminal, the type of the service requested by the mobile terminal. Generally, different service types have different QoS, security, or data rate requirements. Therefore, the type of service requested can be determined by the service related information sent by the mobile terminal.

Step 604: The coordinator queries the correspondence relationship table according to the determined service type, and searches the table for the network ID of the access network corresponding to the service type.

Step 605: After the coordinator finds the network ID, assign the access network corresponding to the network ID to the service requested by the mobile terminal.

In this step, if the coordinator is implemented by a separate network entity, the coordinator can assign the message Sending to the network initially accessed by the mobile terminal, the network forwards the assignment message to the mobile terminal; if the coordinator is implemented by a network entity in the network initially accessed by the mobile terminal, the coordinator can The assignment message is sent to the mobile terminal. After receiving the assignment message, the mobile terminal connects to the assigned access network and carries the requested service on the network.

To implement the above process, the structure of the multi-RAT coordinator in Embodiment 3 can be as shown in FIG. FIG. 7 is a schematic structural diagram of a multi-RAT coordinator 7 according to Embodiment 3 of the present invention. More

The RAT coordinator is a network side entity, and includes: a storage module 71, a query module 72, and an assignment module 73, where:

The storage module 71 is configured to store a correspondence table between the service type and the access network, where the correspondence table may be pre-configured in the storage module 71. The correspondence table may be as shown in Table 1, including the service type identifier and the corresponding access. Network identification

The querying module 72 is configured to query the corresponding relationship table in the storage module 71 according to the service type of the service requested by the mobile terminal, and search for an access network corresponding to the service type according to the corresponding relationship table; The access network found by the query module 72 is assigned to the service requested by the mobile terminal, that is, the mobile terminal is instructed to carry the requested service to the access network.

The multi-RAT coordinator 7 may further include a creating module 74, configured to create a correspondence table between the service type and the access network according to the information reported by each access network, including the network ID, and create a correspondence table. It is stored in the storage module 71.

7 the multi-RAT coordinator module 75 may further include receiving, the means for receiving traffic information transmitted from the mobile terminal, such as Q ₀ S, security or data rate information, and determines whether the mobile terminal according to the service requested by the relevant information The type of the service enables the query module 72 to query the correspondence table according to the service type.

Embodiment 4

In this embodiment, a multi-RAT coordinator is set on the network side. The coordinator can be a separate network Entity implementation, which can also be integrated into network entities in an existing network, usually integrated into network entities in the access network. If the coordinator is implemented by an independent network entity, the coordinator can communicate with multiple radio access networks; if the coordinator is implemented by a network entity in the live network, the coordinator can communicate with other radio accesses Telecommunication.

The coordinator stores a correspondence table between the service type and the access network, as shown in Table 2. In the correspondence table, each service type corresponds to one or a group of access networks. The matching between the service type and the network can be determined according to the data rate of the service, the QoS requirement, the security requirement, and the like. When the service type corresponds to a group of access networks, the priority ID in Table 2 indicates the degree of matching between the network and the service type, and the higher the priority (the highest priority in this embodiment is 1), indicating that the network is more suitable for bearer. This type of business. The priority ID entry is optional. When there is no such entry, the network ID can be ranked according to the priority level of the service carrying the type of service. The top row indicates that the network is most suitable for carrying the type of service. The following is followed by the next.

The coordinator can create a correspondence table in the manner as described in the third embodiment.

In order to update the correspondence table in time, to increase the correspondence between the new service type and the network, or to adjust the correspondence between the existing service type and the network, the embodiment of the present invention can update the correspondence table through the system administrator, except as described above. For the case where a service type corresponds to a group of networks, the following manner is also provided to automatically update the correspondence table:

The coordinator notifies each access network to report network information, such as notifying each access network to report network information including the network ID, or periodically notifying each access network to report network information including the network ID, if the coordinator does not receive the access network. If the corresponding network ID exists in a group of network IDs in the corresponding relationship table, the coordinator deletes the network ID; if the coordinator receives the information reported by the access network, the corresponding network ID does not exist in the In the correspondence table, the coordinator adds the network ID to the network ID list corresponding to the corresponding service type, and may perform the network ID according to a preset policy (such as which service type or types of services the network can correspond to) Corresponds to the corresponding business type.

Further, the coordinator notifies the network information reported by each access network that information that can reflect the running status of the network, such as load status, may also be included. The coordinator adjusts the priority of a group of networks corresponding to the service type according to the information reported by each access network. Such as setting a load threshold Value, when the network load is lower than this threshold, the priority of the network is increased by one level, and when the network load is higher than the threshold, the priority of the network is lowered by one level. Preferably, the priority may be further updated in combination with the service matching type, for example, if the network load is lower than the threshold, and the network has a high degree of matching with the type of service (the matching degree may be based on the data rate of the service, the QoS requirement, or If the security requirement is determined, the priority of the network is increased by one level; if the network load is lower than the threshold, but the network has a low degree of matching with the type of service, the current priority of the network can be maintained. Through the above updating process, the access network corresponding to the service type is prioritized from the matching degree with the service and the actual running condition of the network, so that the most suitable bearer network can be selected for the service requested by the mobile terminal. .

When the mobile terminal initiates a service request, the process in which the coordinator assigns the mobile terminal to the network according to the correspondence table may be as shown in FIG. 8.

FIG. 8 is a schematic flowchart of selecting an access network according to Embodiment 4 of the present invention, where specific steps include:

Step 801: The mobile terminal initiates a service request, and sends information related to the service, such as QoS, security requirements, or data rate, to the coordinator.

In this embodiment, the mobile terminal is required to periodically send uplink information after initiating a service request and transmitting service related information.

Step 802: The coordinator determines, according to service related information sent by the mobile terminal, a type of service requested by the mobile terminal.

Step 803: The coordinator searches for a network ID corresponding to the service type from the correspondence relationship table according to the determined service type. In this embodiment, the service type corresponds to a set of network IDs, and the coordinator searches for the network ID corresponding to the service type according to the priority from highest to lowest;

Step 804: After the coordinator finds the corresponding network ID, request the access network corresponding to the network ID to monitor information sent by the mobile terminal on the uplink.

Step 805: The coordinator receives the monitoring result fed back by the access network, and determines, according to the monitoring result, whether the access network monitors the uplink information sent by the mobile terminal, and if it is monitored, indicating that the mobile terminal is in the coverage of the access network. Within the range, step 807 is performed; if not, step is performed 806.

In this step, a timer can be set to time the access network feedback monitoring result. If the timer has not received the monitoring result of the access network feedback, the access network does not detect the information sent by the terminal.

Step 806, the coordinator continues to find the network ID of the priority corresponding to the service type in the corresponding relationship table, and returns to step 804 after finding it;

Step 807: The coordinator assigns, to the service requested by the mobile terminal, an access network corresponding to the network ID. After accepting the assignment of the coordinator, the mobile terminal connects to the assigned access network, carries the requested service on the network, and stops sending uplink information periodically on the uplink.

In order to implement the above process, the structure of the multi-RAT coordinator in Embodiment 4 can be as shown in FIG. FIG. 9 is a schematic structural diagram of a multi-RAT coordinator 9 according to Embodiment 4 of the present invention. The multi-RAT coordinator is a network side entity, and includes: a storage module 91, a query module 92, and an access module 93.

The storage module 91 is configured to store a correspondence table between the service type and the access network, where the correspondence table may be pre-configured in the storage module 91. The correspondence table may be as shown in Table 2, including the service type identifier and the corresponding access. Network identifier, a service type identifier may correspond to one or a group of access network identifiers; when a service type identifier corresponds to a group of access networks, the access networks respectively have priorities;

The query module 92 is configured to search for a service type query correspondence table of the service requested by the mobile terminal, and search for an access network corresponding to the service type according to the correspondence relationship table; the query module 92 can be based on the priority of the access network. , select the access network in order of priority from high to low;

The assignment module 93 is configured to assign the access network found by the query module 92 to the service requested by the mobile terminal.

The foregoing multi-RAT coordinator 9 may further include a determining module 94, configured to notify the accessing network that the querying module 92 finds the information sent by the mobile terminal, and the information is sent by the mobile terminal after the service request is initiated by the uplink period; The method is further configured to receive a monitoring result sent by the access network, and determine, according to the monitoring result, whether the access network monitors information sent by the mobile terminal, and if it is monitored, The access network is assigned to the service requested by the mobile terminal; otherwise, the notification query module 92 searches the corresponding relationship table for the access network corresponding to the priority of the service type.

The multi-RAT coordinator 9 may further include a receiving module 95, configured to receive service information sent by the mobile terminal, and determine a service type requested by the mobile terminal according to the service information.

The foregoing multi-RAT coordinator 9 may further include a creating module 96, which is configured to create a correspondence table according to the information reported by each access network, and store the corresponding relationship table in the storage module 91.

The multi-RAT coordinator 9 may further include an update module 97, which is configured to update the correspondence table according to the network information reported by each access network. The update module 97 may include a first update submodule and a second update submodule, and may further include a third update submodule (each update submodule is not shown in the figure), wherein: the first update submodule is configured to receive When the network information reported by the access network is not present in the corresponding relationship table, the access network is added to the corresponding relationship table; the second update sub-module is used to report the access network when not received. If the access network exists in the corresponding relationship table, the access network is removed from the corresponding relationship table; the third update sub-module is configured to update the connection in the correspondence table according to the network information reported by each access network. Priority of the incoming network; The third update sub-module is further configured to update the priority of the access network in the correspondence table according to the network information reported by each access network and the matching degree between the network and the service type.

In the foregoing embodiment 3 and the fourth embodiment, the multi-RAT coordinator on the network side selects the network that carries the service for the service requested by the mobile terminal according to the correspondence table between the service type and the access network, and fully utilizes different network bearers. The advantage of the business is that each type of service carries the transmission on the most suitable network. Moreover, the network side has the initiative to configure the bearer network for the service initiated by the mobile terminal, so that the network side can flexibly configure the correspondence relationship table according to the load situation and the operator's needs, so as to specify the most suitable network access for the mobile terminal.

Claims

Rights request

A method for selecting an access network, comprising the steps of:

Querying the correspondence table between the service type and the access network according to the service type of the service requested by the mobile terminal, and obtaining the corresponding access network;

Specifying the obtained access network to carry the service requested by the mobile terminal.

2. The method according to claim 1, wherein the service type corresponds to multiple access networks, and the multiple access networks respectively have priorities;

Obtaining an access network corresponding to the service type, specifically:

The access network is obtained from the plurality of access networks corresponding to the service type in descending order of priority.

The method of claim 1, wherein after obtaining the access network corresponding to the service type, the method further includes: determining whether the access network is available, when determining that the access network is available, Specifying the access network to carry the service requested by the mobile terminal.

The method of claim 3, wherein the mobile terminal queries the correspondence table; the mobile terminal determines whether the access network is available, specifically: the mobile terminal scans the connection Entering the network to determine whether the access network is available;

Or, the network side queries the corresponding relationship table; the network side determines whether the access network is available, specifically: notifying the access network to listen to information sent by the mobile terminal after initiating a service request; and determining, according to the monitoring result, Whether the access network is available.

The method according to claim 4, wherein the service type corresponds to multiple access networks, and the multiple access networks respectively have priorities;

When the mobile terminal determines that the access network is unavailable, the method further includes the steps of:

And continuing to obtain the access network corresponding to the priority of the service type according to the correspondence relationship table, and determining whether the obtained access network is available by scanning, and stopping the obtaining operation after obtaining the available access network;

When the network side determines that the access network is unavailable, the method further includes the following steps: And obtaining, according to the correspondence relationship table, the access network corresponding to the priority of the service type, and determining whether the acquired access network listens to the information sent by the mobile terminal, until the obtained access network is monitored. The acquisition operation is stopped after the information sent by the mobile terminal.

The method according to claim 4, wherein after the network side specifies the access network, the method further includes the following steps:

The mobile terminal carries the requested service to the access network and stops transmitting the information.

The method according to claim 1, wherein the correspondence table is preset to the mobile terminal, or downloaded from the network side to the mobile terminal;

Alternatively, the correspondence relationship table is pre-configured on the network side, or is created by the network side according to information reported by each access network.

8. The method of claim 7, further comprising:

The mobile terminal scans all access networks, and when the scan result indicates that the access network in the correspondence table is unavailable, the access network is removed from the correspondence table on the mobile terminal; when the scanned access is performed When the network is not in the correspondence table, the network is added to the correspondence table on the mobile terminal;

Or, the network side notifies each access network to report network information, and when receiving the network information reported by the access network but the access network is not in the corresponding relationship table, adding the access network to the network side In the relationship table, when the information reported by the access network is not received but the access network exists in the correspondence relationship table, the access network is removed from the correspondence table of the network side.

The method according to claim 8, wherein the service type in the correspondence table corresponds to multiple access networks, and the multiple access networks respectively have priorities;

The updating, by the mobile terminal, the correspondence table further includes:

Updating the priority of the access network in the correspondence table according to the scanned network signal strength; or updating the access in the correspondence table according to the network signal strength obtained by the scanning and the matching degree between the network and the service type Priority of the network;

Or, the network side updates the correspondence relationship table, and further includes: Updating the priority of the access network in the corresponding relationship table according to the network information reported by each access network; or updating the corresponding relationship according to the network information of each access network and the matching degree between the network and the service type The priority of the access network in the table.

10. A mobile terminal, comprising:

And a network selection module, configured to specify that the access network carries the service requested by the mobile terminal.

The mobile terminal according to claim 10, wherein the service type corresponds to multiple access networks, and the multiple access networks respectively have priorities;

The querying module is further configured to obtain an access network according to a priority order from multiple access networks corresponding to the service type.

The mobile terminal of claim 10, further comprising:

a scan judging module, configured to notify the network selection module to specify the access when the access network obtained by scanning the query module determines that the access network is available when the service type corresponds to an access network The network carries the requested service; when the service type corresponds to multiple access networks, by scanning the access network acquired by the query module, when the access network is determined to be available, the network selection module is notified to specify the The access network carries the requested service, and when the access network is determined to be unavailable, the querying module is notified to obtain the access network corresponding to the priority of the service type according to the corresponding relationship table.

The mobile terminal of claim 10, further comprising:

And an update module, configured to receive a scan result obtained by the mobile terminal scanning all access networks, and update a correspondence table in the storage module according to the scan result.

The mobile terminal according to claim 13, wherein the update module comprises a first update submodule and a second update submodule; or, comprising a first update submodule, a second update submodule, and a third Update the submodule, where:

a first update submodule, configured to: when the scan result indicates that the access network in the correspondence table is not When available, the access network is removed from the correspondence table;

a second update submodule, configured to add the network to the corresponding relationship table when the scanned access network is not in the correspondence relationship table;

a third update submodule, configured to: when the service type corresponds to multiple access networks, and the multiple access networks respectively have priorities, update the access in the correspondence table according to the network signal strength obtained by scanning The priority of the network; or, for updating the priority of the access network in the correspondence table according to the network signal strength obtained by the scanning and the matching degree of the network and the service type.

15. A network device, comprising:

And an assignment module, configured to assign the acquired access network to the service requested by the mobile terminal.

The network device according to claim 15, wherein the service type corresponds to multiple access networks, and the multiple access networks respectively have priorities;

The querying module is further configured to acquire an access network according to a priority from a plurality of access networks corresponding to the service type.

The network device according to claim 15, further comprising:

a determining module, configured to: when the service type corresponds to multiple access networks, and the multiple access networks respectively have priorities, notify the acquired access network to listen to information sent by the mobile terminal, and receive the monitoring result, according to the The monitoring result determines whether the access network listens to the information sent by the mobile terminal, and if it is intercepted, assigns the access network to the service requested by the mobile terminal; otherwise, notifies the query module according to the corresponding relationship The table obtains an access network with a priority corresponding to the service type.

The network device according to claim 15, further comprising:

And a creating module, configured to create the correspondence table according to the information reported by each access network, and store the corresponding relationship table in the storage module.

The network device according to claim 15, further comprising: And an update module, configured to update the correspondence table according to the network information reported by each access network.

The network device according to claim 19, wherein the update module comprises a first update submodule and a second update submodule; or, comprising a first update submodule, a second update submodule, and a third Update the submodule, where:

a first update submodule, configured to: when receiving the network information reported by the access network, but the access network does not exist in the corresponding relationship table, adding the access network to the correspondence relationship table; a second update submodule, configured to: when the access network is not received, but the access network exists in the corresponding relationship table, remove the access network from the correspondence relationship table; And an update submodule, configured to: when the service type corresponds to multiple access networks, and the multiple access networks respectively have priorities, update the access in the correspondence table according to network information reported by each access network The priority of the network is used to update the priority of the access network in the correspondence table according to the network information reported by each access network and the matching degree between the network and the service type.