WO2012151860A1

WO2012151860A1 - Network selecting method and device for multimode terminal

Info

Publication number: WO2012151860A1
Application number: PCT/CN2011/081194
Authority: WO
Inventors: 魏然; 祁麟; 周洋; 韦益德; 谢为国
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-08-24
Filing date: 2011-10-24
Publication date: 2012-11-15
Also published as: CN102271386A

Abstract

Disclosed are a network selecting method and device for a multimode terminal. The method comprises: acquiring a user area where a terminal is currently located; determining the type of a service currently initiated by the terminal; according to saved correspondence between the user area as well as the type of the service and a network selecting policy, acquiring the network selecting policy corresponding to the user area where the terminal is currently located and to the type of the service currently initiated by the terminal; and selecting a network for residence according to a descending order of priorities of records in the acquired network selecting policy. Through the present invention, the terminal is enabled to improve as much as possible the success ratio of network selection for the user while satisfying the performance index of service stability of the user, thereby improving the user experience.

Description

TECHNICAL FIELD The present invention relates to the field of mobile communications, and in particular to a network selection method and apparatus for a multimode terminal. BACKGROUND OF THE INVENTION Third generation mobile communication (3G) technology refers to cellular mobile communication technology that supports high speed data transmission. The 3G service can simultaneously transmit voice (call) and data information (email, instant messaging, etc.), and its representative feature is to provide high-speed data services. Wireless Local Area Network (WLAN) refers to the application of wireless communication technology to connect computer devices. Customers can access the Internet and enterprise networks at any time and anywhere via laptops, PDAs, etc. to obtain information, entertainment or conduct. Office, support multimedia functions, provide fast and stable wireless connection. The data transmission speed is fast, and the network speed of 100M can be achieved, but the transmission distance is short. The biggest feature of WLAN is that it is completely free in most cases. Therefore, many restaurants and office buildings have WLAN networks, and when people are in it, they can use high-speed and free network resources. The fourth generation of mobile communication (4G) is a technology product that integrates 3G and WLAN and can transmit high-quality video images and image transmission quality comparable to that of high-definition television. The 4G system can download at 100Mbps, 2000 times faster than dial-up, and upload speed can reach 20Mbps, which can meet the requirements of almost all users for wireless services. 4G-like and fixed broadband networks are comparable in price, and the billing method is more flexible and flexible, and users can determine the required services according to their own needs. In addition, 4G can be deployed where DSL and cable modems are not covered, and then extended to the entire region. Currently, 2G, 3G, 4G and WLAN networks each have their own advantages and disadvantages, and the network coverage is different. 2G network coverage is wide, but the support for data services is not good, 3G, 4G network coverage is insufficient, but the data service support is very good. At present, 2G terminal users account for the majority, but mainly use GPRS/EDGE networks, the rate is low, the medium and high speed type data services cannot be used, and the user perception is not high; 2/3G interoperability is not perfect, and 3G network coverage is insufficient. 3G service experience is poor; slow Internet access is a key issue affecting the perception of China's mobile data services. It should be through network convergence, using 3G and WLAN networks to meet the rapidly growing data service needs of customers. At present, in the mobile process, the basic rule of the network handover is to switch according to the strength of the network signal currently located by the terminal. For the multimode terminal, if the terminal is under the coverage of multiple networks at the same time, how to maintain the quality of service of the user Choosing a different network residency has not yet come up with an effective solution. SUMMARY OF THE INVENTION The present invention provides a network selection scheme for a multimode terminal to at least solve the above problems. According to an aspect of the present invention, a network selection method for a multimode terminal is provided, including: obtaining a user area where a terminal is currently located; determining a service type currently initiated by the terminal; and selecting a network policy according to the saved user area, service type, and network selection policy Corresponding relationship, obtaining a network selection policy corresponding to the user area currently in which the terminal is located and the service type currently initiated by the terminal; selecting the network resident according to the priority recorded in the obtained network selection policy from highest to lowest . Preferably, obtaining the user area where the terminal is currently located includes: acquiring a cell of each network in the area where the terminal is currently located; determining the user area where the terminal is currently located according to the cell number of the cell of each network. Preferably, after the network is selected according to the obtained priority in the selected network selection policy, the method further includes: calculating, according to the current network selection result, the currently initiated service type. Determining the network success rate of each network in the current user area; updating the user relationship between the user relationship and the current location of the terminal in the corresponding relationship according to the network success rate of each network The priority of each network recorded in the network selection policy corresponding to the service type, wherein the priority of each network is proportional to the success rate of network selection of each network. Preferably, the priority of each network recorded in the network selection policy corresponding to the user area and the service type currently initiated by the terminal in the corresponding relationship is updated, including: according to the update The selected network success rate of each network and the preset network success rate weighting coefficients of the respective networks calculate and update the priorities of the respective networks recorded in the network selection policy. Preferably, the network in which the terminal is currently located includes: a wireless local area network WLAN, a fourth generation mobile communication 4G network, a third generation mobile communication 3G network, and a second generation mobile communication 2G network. Preferably, in the initial state, for the packet domain PS type service, the order of priority recorded in the network selection policy from high to low is: WLAN, 4G, 3G, and P 2G; for circuit domain CS type service, The order of priority recorded in the network selection policy from high to low is: 2G, 3G, 4G and WLAN. According to another aspect of the present invention, a network selection device for a multimode terminal is provided, which is located in a terminal, and includes: a cell management module, configured to determine a user area where the terminal is currently located; a service management module, configured to acquire The service type that is currently initiated by the terminal; the network selection policy module is configured to record the correspondence between the service type and the user area and the network selection policy; and the network selection module is configured to obtain the current record recorded in the network selection policy module and the terminal And the network selection policy corresponding to the service type that is currently initiated by the terminal, and selecting the network resident according to the obtained priority in the selected network selection policy. Preferably, the cell management module includes: a search module, configured to search for cells of each network in the area where the terminal is currently located; and a determining module, configured to be a combination of cell numbers of cells according to respective networks of the current location of the terminal , determining the user area where the terminal is currently located. Preferably, the device further includes: a success rate calculation module, configured to calculate, according to a network selection result of the network selection module, a success rate of network selection of each network in the currently located user area; The network selection policy module is further configured to calculate and update the record in the network selection policy according to the network selection success rate of each network and the preset network success rate weighting coefficient of each network obtained by the success rate calculation module. The priority of each network, wherein the priority of each network is proportional to the success rate of network selection of each network. Preferably, the network in which the terminal is currently located includes: a wireless local area network WLAN, a fourth generation mobile communication network 4G, a third generation mobile communication network 3G, and a second generation mobile communication network 2G. Preferably, in the initial state, for the packet domain PS type service, the order of priority recorded in the network selection policy from high to low is: WLAN, 4G, 3G, and P 2G; for circuit domain CS type service, The order of priority recorded in the network selection policy from high to low is: 2G, 3G, 4G and WLAN. According to the present invention, the network selection policy corresponding to the user area currently in which the terminal is located and the currently initiated service type is selected, and the network resident is selected according to the priority recorded in the selected network selection policy from high to low, and the terminal can be made The performance of the user's service is stable, and the maximum success rate of the user's network selection is improved, and the user experience is improved. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a schematic structural diagram of a network selection apparatus for a multimode terminal according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a network selection apparatus of a multimode terminal according to a preferred embodiment of the present invention; 3 is a flowchart of a network selection method of a multimode terminal according to an embodiment of the present invention; and FIG. 4 is a flowchart of a network selection method of a multimode terminal according to a preferred embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. 1 is a schematic structural diagram of a network selection device of a multimode terminal according to an embodiment of the present invention. The device is disposed in a multimode terminal. As shown in FIG. 1, the device mainly includes: a cell management module 10, a service management module 20, The network selection policy module 30 and the network selection module 40 are selected. The cell management module 10 is configured to determine the user area where the terminal is currently located. The service management module 20 is configured to obtain the service type currently initiated by the terminal. The network selection policy module 30 is configured to record the service type, the user area, and the network selection policy. Corresponding relationship; the network selection module 40 is connected to the cell management module 10, the service management module 20, and the network selection policy module 30, and is configured to obtain the user area recorded in the network selection policy module 30 and the current user area and the terminal currently initiated by the terminal. The network selection policy corresponding to the service type, and selecting the network resident according to the highest priority to the priority recorded in the selected network selection policy. The priority of each network recorded in the network selection policy is based on the user type in the user area corresponding to the network selection policy, and the service type and the user area and the network selection policy are recorded in the network selection policy. When the service of the service type corresponding to the network selection policy is initiated, the success rate of networking in different networks is determined. Preferably, in the initial state, for the terminal under 2G, 3G, 4G and WLAN coverage, the default network selection policy is: For the PS type service, the priority of each network is WLAN, 4G, and the order of priority from high to low. 3G and 2G; For the CS-type service, the priority of each network is 2G, 3G, 4G, and WLAN. The above-mentioned devices provided by the embodiments of the present invention are used by the network selection policy module 30 to record different service types of the terminal. In the network selection policy of the different user areas, the network selection module 40 obtains a network selection policy corresponding to the user area where the terminal is currently located and the type of the service that is initiated, and selects the network resident according to the priority order recorded in the network selection policy. The success rate of each service of the terminal in a certain area can be improved, and the user experience is improved. In a preferred embodiment of the present invention, the user area where the terminal is currently located may be confirmed by the cell number combination of the network cell in the current location of the terminal, in order to avoid the additional overhead caused by the positioning function. In the preferred embodiment, the cell management module 10 can confirm the current cell of each network by initiating a network search, and determine the user area where the terminal is currently located by the cell number combination of the network cell where each network is located. In the preferred embodiment, the cell management module 10 may include: a search module, configured to search for cells of each network in the area where the terminal is currently located; and a determining module, configured to be based on the current location of the terminal The combination of the cell numbers of the cells of the respective networks in the area determines the user area in which the terminal is currently located. For example, if the terminal is currently under the coverage of the 2G, 3G, 4G, and WLAN networks, the cell number (or identifier) of the WLAN network cell is 20086, the 3G network cell is 10014, the 4G network cell is 62005, and the 2G network cell is 40086. Through the four cell numbers, the user area where the terminal is currently located can be uniquely determined. When the cell number of one of the four network networks changes, the location of the terminal moves, indicating that the terminal is currently moving to a new user area. . In another preferred embodiment of the present invention, in another preferred embodiment of the present invention, as shown in FIG. 2, the apparatus may further include: a success rate calculation module 50, connected to the network selection module 40, configured to According to the network selection result of the network selection module 40, the network selection success rate of each network in the current user area is calculated. The network selection policy module 30 is also set to each network obtained according to the success rate calculation module 50. The network success rate is selected, and the priorities of the networks recorded in the network selection policy are calculated and updated. The priority of each network is proportional to the network success rate of each network, that is, if the success rate calculation module 50 calculates a network. If the success rate of the selected network is increased, the network selection policy module 30 updates the value of the priority of the network recorded in the network selection policy, that is, increases the value. In a preferred solution of the preferred embodiment, in order to further ensure that the terminal can select a suitable network camp, the network success rate weighting coefficients of the respective networks that can be preset are selected by the network selection policy module 30 according to the success rate calculation module 50. The network selection success rate of the network and the preset network success rate weighting coefficients of the respective networks calculate and update the priorities of the networks recorded in the above network selection policy. For example, in order to ensure that the PS service preferentially selects the WLAN network and the network above 3G, the CS service preferentially selects the 2G network, and the network success rate weighting coefficient of the WLAN network can be set to 95%, that is, as long as the WLAN network has a success rate of 95%. The above is acceptable, set to the first choice of the network (that is, the highest priority), the same can be set 4G, 3G weighting. If the success rate of selecting a WLAN in a streaming media service in a user area is 95%, and the success rate of 2G is 100%, according to the network success rate weighting coefficient, the network selection policy is that WLAN takes precedence over 2G. In a preferred embodiment of the present invention, the network where the terminal is currently located includes, but is not limited to: a wireless local area network (WLAN), a fourth generation mobile communication network (4G), a third generation mobile communication network (3G), and Second generation mobile communication network (2G). In a preferred embodiment of the present invention, since the WLAN is more suitable for the packet domain (PS) type service, the 2G is more suitable for the circuit domain (CS) type service, and therefore, in the initial state, for the PS type service, for each In the user area, the order of the priorities recorded in the network selection policy is: WLAN, 4G, 3G, and 2G. For the CS type service, the order of priority recorded in the network selection policy is from high to low: 2G, 3G, 4G and WLAN. The foregoing device provided by the embodiment of the present invention may be disposed between the wireless device and the framework of the multimode terminal, so as to increase the services of the terminal (for example, mobile TV, voice telephone, videophone, and short message, etc.) in a certain area in 2G. The selection success rate of the 3G, 4G, and WLAN networks, and the device can dynamically update the network selection policy, thereby dynamically selecting the network, maximizing the success rate of each service of the user in each area, and improving the user experience. . FIG. 3 is a flowchart of a network selection method of a multimode terminal according to an embodiment of the present invention. The method may be implemented by using the apparatus described in FIG. 1 or FIG. 2 above. As shown in FIG. 3, the method mainly includes the following steps. Step S302: Step S308): Step S302: Acquire a user area where the terminal is currently located. In a preferred embodiment of the present invention, the terminal may be located in the preferred embodiment of the present invention. The cell number combination of the network cell of the area is used to confirm the user area where the terminal is currently located. In the preferred embodiment, the terminal can confirm the current cell where each network is located by initiating a network search, and the cell number combination of the network cell where each network is located. To determine the user area where the terminal is currently located. In the preferred embodiment, step S302 may include: (1) acquiring cells of respective networks in the area where the terminal is currently located; (2) determining, according to a combination of cell numbers of cells of each network in the area where the terminal is currently located, The user area where it is located. For example, if the terminal is currently under the coverage of 2G, 3G, 4G, and WLAN networks, the cell number (or identifier) of the WLAN network cell is 20086, the 3G network cell is 10014, the 4G network cell is 62005, and the 2G network cell is 40086. Through the four cell numbers, the user area where the terminal is currently located can be uniquely determined. When the cell number of one of the four network networks changes, the location of the terminal moves, indicating that the terminal is currently moving to a new user area. . Step S304, determining the service type currently initiated by the terminal; for example, recording the service type currently initiated by the terminal is: mobile TV, voice call, videophone, short message, fetion, browser or streaming media. Step S306: According to the corresponding relationship between the saved user area and the service type and the network selection policy, the network selection policy corresponding to the current user area of the terminal and the service type currently initiated by the terminal is obtained; when the terminal is powered on, the file system can be obtained from the file system. The correspondence between the saved user area and the service type and the network selection policy is read, wherein, in the correspondence between the saved service type and the user area and the network selection policy, the priority of each network recorded in the network selection policy is based on When the user initiates a service of the service type corresponding to the network selection policy in the user area corresponding to the network selection policy, the success rate of networking in different networks is determined. Preferably, in the initial state, for the terminal processing 2G, 3G, 4G and WLAN coverage, the default network selection strategy Yes: For PS-type services, the priority of each network is WLAN, 4G, 3G, and 2G. For CS-type services, the priority of each network is 2G, 3G, 4G and WLAN. Step S308, selecting network camping according to the order of priority recorded in the obtained network selection policy from high to low. In another preferred implementation manner of the embodiment of the present invention, in another preferred embodiment of the present invention, after selecting the network resident according to the priority recorded in the obtained network selection policy, the network resident may be followed. The network selection result is used to calculate the success rate of the network selection of each network in the current user area, and then calculate and update the priority of each network recorded in the network selection policy according to the network success rate of each network. The priority of each network is proportional to the success rate of network selection of each network. In a preferred solution of the preferred embodiment, in order to further ensure that the terminal can select a suitable network camp, the network success rate weighting coefficients of the respective networks may be preset, and the respective networks recorded in the network selection policy are calculated and updated. At the priority level, the priorities of the networks recorded in the network selection policy are calculated and updated according to the obtained network selection success rate of each network and the preset network success rate weighting coefficients of the respective networks. For example, in order to ensure that the PS service preferentially selects the WLAN network and the network above 3G, the CS service preferentially selects the 2G network, and the network success rate weighting coefficient of the WLAN network can be set to 95%, that is, as long as the WLAN network has a success rate of 95%. The above is acceptable, set to the first choice of the network (that is, the highest priority), the same can be set 4G, 3G weighting. If the success rate of selecting a WLAN in a streaming media service in a user area is 95%, and the success rate of 2G is 100%, according to the network success rate weighting coefficient, the network selection policy is that WLAN takes precedence over 2G. The network selection method of the foregoing multi-mode terminal provided by the embodiment of the present invention, by determining the dynamic network selection policy, enables the terminal to maximize the success rate of the user selection network and improve the user under the performance index that satisfies the user service stability. Experience. The cell management module 10, the service management module 20, the success rate calculation module 50, and the network selection policy module 30 in the device shown in FIG. 2 are the function modules newly added to the terminal in the embodiment of the present invention, in the embodiment of the present invention. In a preferred embodiment, the four functional modules may be integrated into one functional module. In the preferred embodiment, the functional module is referred to as a user network selection success management module. Referring to FIG. 2, the embodiment of the present invention The network selection process of a preferred multimode terminal may include the following steps: Step 1: The mobile terminal is powered on; Step 2: The user selects the network success rate management module to automatically start, the module mainly includes the above four modules: /J area management module 10 The service management module 20, the success rate calculation module 50, and the network selection policy module 30. Step 3: The success rate calculation module 50 completes the initialization, and the network selection policy module 30 completes the initial setting of the terminal network selection policy. Step 4: The service management module 20 determines the service type currently selected by the mobile terminal, and the cell management module 10 confirms the cell number of the cell in each network. Step 5: The success rate calculation module 50 counts the success rate of the service in each network in the default network priority selection network step; Step 6: The network selection policy module 30 calculates the statistical result of the success rate calculation module 50 and the network success rate weighting coefficient. List the network selection strategies for different services in different user areas. Step 7: When the mobile terminal initiates different services in different user areas, the mobile terminal selects the network resident according to the priority order of the network recorded in the network selection policy. The mobile terminal side intelligent network selection and dynamic network selection can be implemented by the method provided by the foregoing preferred embodiments. By calculating the success rate of each service selection network in a certain area of the mobile multi-mode terminal, the optimal resident network can be dynamically selected for the user without affecting the user's use, thereby enhancing the user's perception. A method for selecting a network of a multi-module terminal according to a preferred embodiment of the present invention is described below with reference to FIG. 2, and FIG. 4 shows a method for supporting a smart network selection method according to the embodiment of the present invention. The network selection flowchart of the modulo terminal is as shown in FIG. 4. In the preferred embodiment, the processing flow of the intelligent selection network of the multimode terminal mainly includes the following steps: Step S402: The mobile terminal is powered on, and the user selects the network success rate management module automatically. Startup, running in the background of the mobile terminal; Step S404: The network selection policy module of the user selection success rate management module is started, the value of the file system is read, and the initialization setting is completed. The default network priority is: The PS network service selection sequence is: WLAN, 4G, 3G, 2G; The CS service selection sequence is: 2G, 3G, 4G, WLAN. The success rate calculation module reads the value of the file system and completes the initialization. Step S406: The service management module runs synchronously with the cell management module. For example, current users use a multimode terminal to initiate streaming services in the office. The service management module records that the currently initiated service type is a streaming media service, and the cell management module obtains the network cell in the area where the terminal is located, if the WLAN network cell is 20086, the 3G network cell is 10014, the 4G network cell is 62005, and the 2G network is small. The area is 40086, and four cell numbers are used to determine the area where the terminal is located. If there is a change in the cell number of the four networks, indicating that the user location moves, a new user area is added. Step S408: According to the network selection policy of step S404, the streaming media service belongs to the PS service according to the default value of the network selection policy (the network selection order of the PS type service is: WLAN, 4G, 3G, 2G;), and the network selection policy is set for the terminal; The WLAN network is preferentially selected. If the connection is successful, the WLAN network resides; if the connection fails, the 4G network resides; if the 4G network still fails, the 3G network is selected. Step S410: According to the network selection result of step S408 The success rate of the network selection of each network when the streaming media service is in a certain area, that is, the update success rate management module calculates the success rate of the network selection of the network when the streaming media service is in a certain area; Step S412: According to the success rate calculation module The calculation result and the network success rate weighting coefficient are updated, and the data in the network selection policy module is updated. In this embodiment, the purpose of setting the network success rate weighting coefficient is to ensure that the PS service preferentially selects the WLAN network and the network above 3G, and the CS service preferentially selects the 2G network. For example, setting the weight of the WLAN network to 95%, that is, as long as the WLAN network success rate is above 95%, it is acceptable. Set it as the first choice of the network. Similarly, you can set the weight of 4G and 3G, if there is an area flow. The success rate of selecting WLAN in the media business is 95%, and the success rate of 2G is 100%. According to the weighting, the network selection strategy is that the WLAN takes precedence over the 2G. The updated value of the success rate management module and the network selection policy module is written to the file system, and the flow proceeds to step S404. The mobile terminal re-initiates the streaming media service in a certain area, and performs network selection according to the updated value of step S404, thereby ensuring the most preferred network policy of the user to the greatest extent. From the above description, it can be seen that, in the embodiment of the present invention, the method for dynamically selecting a network by calculating a network connection success rate of a certain service in a certain area on a multi-mode terminal can make the mobile The terminal selects the appropriate network resident in the shortest time, ensures the success rate of the user's Internet access, realizes network convergence, maximizes the multi-network aggregation effect, and significantly improves the revenue of the mobile network operator. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A method for selecting a network of a multimode terminal, comprising:

Obtain the user area where the terminal is currently located;

Determining a service type currently initiated by the terminal;

Obtaining a network selection policy corresponding to the user area currently in the terminal and the service type currently initiated by the terminal, according to the saved user area and the corresponding relationship between the service type and the network selection policy;

The network camping is selected in descending order of priority recorded in the selected network selection policy.

The method of claim 1, wherein the obtaining the user area where the terminal is currently located comprises: acquiring a cell of each network in the area where the terminal is currently located;

Determining, according to the cell number of the cell of each network, the user area where the terminal is currently located.

The method according to claim 1, wherein, after the network residing is selected in descending order of the priorities recorded in the selected network selection policy, the method further includes:

Calculating, according to the current network selection result, a network selection success rate of each network of the currently-origined service type in the current user area;

And updating, according to the network success rate of each network, each network recorded in the network selection policy corresponding to the user area where the terminal is currently located and the service type currently initiated by the terminal in the corresponding relationship Priority, where the priority of each network is proportional to the success rate of each network.

The method according to claim 3, wherein each of the correspondences recorded in the network selection policy corresponding to the user area where the terminal is currently located and the service type currently initiated by the terminal is updated. The priority of the network, including:

The priorities of the networks recorded in the network selection policy are calculated and updated according to the selected network success rate of each network and the preset network success rate weighting coefficients of the respective networks. The method according to any one of claims 1 to 4, wherein the network in which the terminal is currently located includes: a wireless local area network WLAN, a fourth generation mobile communication 4G network, a third generation mobile communication 3G network, and a second Generation mobile communication 2G network. The method according to claim 5, wherein, in the initial state, for the packet domain PS type service, the order of priority recorded in the network selection policy from high to low is: WLAN, 4G, 3G, and 2G; For the domain CS type service, the order of priority recorded in the network selection policy is: 2G, 3G, 4G, and WLAN. A network selection device for a multimode terminal is located in a terminal, and the device includes:

a cell management module, configured to determine a user area where the terminal is currently located;

a service management module, configured to obtain a service type currently initiated by the terminal;

The network selection policy module is configured to record the correspondence between the service type and the user area and the network selection policy. The network selection module is configured to obtain the user area and the location recorded in the network selection policy module and the current location of the terminal. The network selection policy corresponding to the service type that is currently initiated by the terminal is selected, and the network resident is selected according to the obtained priority of the selected network selection policy from highest to lowest. The device according to claim 7, wherein the cell management module comprises:

a search module, configured to search for a cell of each network in the area where the terminal is currently located; and a determining module, configured to determine a user area where the terminal is currently located according to a combination of cell numbers of cells of each network in the area where the terminal is currently located . The apparatus according to claim 7, wherein

The device further includes: a success rate calculation module, configured to calculate, according to a network selection result of the network selection module, a success rate of network selection of each network in the currently located user area of the currently initiated service type;

The network selection policy module is further configured to calculate and update the record in the network selection policy according to the network selection success rate of each network and the preset network success rate weighting coefficient of each network obtained by the success rate calculation module. The priority of each network, wherein the priority of each network is proportional to the success rate of network selection of each network. The device according to any one of claims 7 to 9, wherein the network in which the terminal is currently located includes: a wireless local area network WLAN, a fourth generation mobile communication network 4G, a third generation mobile communication network 3G, and a second Generation mobile communication network 2G.

The device according to claim 10, wherein, in an initial state, for a packet domain PS type service, a priority recorded in the network selection policy from high to low is: WLAN, 4G, 3G, and 2G; For the circuit domain CS type service, the order of priority recorded in the network selection policy from high to low is: 2G, 3G, 4G, and WLAN.