CN110602765A - Network selection method and device - Google Patents
Network selection method and device Download PDFInfo
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- CN110602765A CN110602765A CN201910962006.XA CN201910962006A CN110602765A CN 110602765 A CN110602765 A CN 110602765A CN 201910962006 A CN201910962006 A CN 201910962006A CN 110602765 A CN110602765 A CN 110602765A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a network selection method, which comprises the following steps: generating a different network roaming base station list and a different network roaming regression base station list according to the type of each obtained base station and a local Public Land Mobile Network (PLMN) of an operator to which each base station belongs, wherein the type of the base station is the type of the base station determined by the operator according to the coverage range negotiation of the base station, and the type of the base station comprises the different network roaming base station or the different network roaming regression base station; and determining a base station to be accessed and accessing according to the PLMN, the different network roaming base station list and the different network roaming regression base station list corresponding to the cell in which the terminal is currently located. Through the PLMN, the different network roaming base station list and the different network roaming regression base station list corresponding to the cell where the terminal is located, the base station to be accessed is searched and obtained, the speed of selecting the network by the terminal is increased, unnecessary roaming cost of a user is reduced, and meanwhile, inter-network roaming settlement cost among operators is clear and definite.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a network selection method and apparatus.
Background
With the development of communication technology, the investment and construction cost of the 5G network is greatly increased. In marginal areas, due to the fact that the use requirement is low, the covering and maintaining cost is difficult to recover, and network resources are seriously idle; and in indoor communication, the user experience of the operator with weak coverage signal is poor. If the different network roaming is adopted, the terminal user can automatically roam to the available operator network at any time and any place under the condition of keeping the mobile phone number and the registered operator unchanged. The inter-network roaming means that an operator network to which the terminal user belongs is an operator A, and the terminal user can obtain mobile communication service through an operator B network under the condition that the operator A network does not cover.
However, when the terminal is located in an area commonly covered by two operator networks, the terminal still preferentially selects a Registered PLMN (Registered PLMN, RPLMN) that has successfully logged in last time according to a PLMN selection procedure of an existing standard Public Land Mobile Network (PLMN), and tries to access to a roaming operator Network, so that a Home Public Land Mobile Network (HPLMN) or an Equivalent Home Network (EHPLMN) cannot be autonomously and quickly selected, and the terminal cannot normally return to the Home Network of the terminal, which increases roaming charges of a user.
Disclosure of Invention
Therefore, the invention provides a network selection method and a network selection device, which are used for solving the problem that the roaming cost is increased because a terminal cannot normally return to a home network of the terminal because the terminal cannot autonomously and quickly select a wireless network to be accessed in the prior art.
In order to achieve the above object, a first aspect of the present invention provides a network selection method, including: generating a different network roaming base station list and a different network roaming regression base station list according to the type of each obtained base station and a local Public Land Mobile Network (PLMN) of an operator to which each base station belongs, wherein the type of the base station is the type of the base station determined by the operator according to the coverage range negotiation of the base station, and the type of the base station comprises the different network roaming base station or the different network roaming regression base station; and determining a base station to be accessed and accessing according to the PLMN, the different network roaming base station list and the different network roaming regression base station list corresponding to the cell in which the terminal is currently located.
The method comprises the following steps of determining a base station to be accessed according to a PLMN, a list of different network roaming base stations and a list of different network roaming regression base stations corresponding to a cell in which a terminal is currently located, and accessing, wherein the steps comprise: searching a different network roaming base station list, judging whether a PLMN corresponding to a cell where the terminal is currently located exists in the different network roaming base station list, and if yes, starting a different network roaming base station selection process; otherwise, searching a different network roaming regression base station list, judging whether a PLMN corresponding to a cell where the terminal is currently located exists in the different network roaming regression base station list, and if yes, starting a different network roaming regression base station selection process; and determining a base station to be accessed and accessing according to the selection result of the selection process of the different network roaming base station or the selection process of the different network roaming regression base station.
The method for selecting the heterogeneous network roaming base station comprises the following steps: acquiring the PLMN of an operator to which the base station belongs in the different network roaming base station list and the priority level of the PLMN; and determining a base station to be accessed according to the priority level of the PLMN and a first recommended PLMN list, wherein the first recommended PLMN list is a PLMN list recommended by the different-network roaming base station and obtained according to the broadcast message of the different-network roaming base station.
The method comprises the following steps of selecting a base station for roaming and returning in a different network, wherein the step comprises the following steps: acquiring the PLMN of an operator to which the base station belongs and the priority level of the PLMN in the heterogeneous network roaming regression base station list; if the fact that the registered PLMN of the terminal is included in the heterogeneous network roaming regression base station list is determined, selecting a base station corresponding to the registered PLMN for access; and if the fact that the base station corresponding to the registered PLMN is accessed fails is determined, the base station to be accessed is determined according to the priority level of the PLMN and a second recommended PLMN list, wherein the second recommended PLMN list is the PLMN list recommended by the different network roaming regression base station and obtained according to the broadcast message of the different network roaming regression base station.
Before the step of generating the list of the different-network roaming base stations and the list of the different-network roaming regression base stations according to the acquired types of the base stations and the PLMN of the operators to which the base stations belong, the method further comprises the following steps: sending a search message to a wireless network so that a base station obtains an address of a terminal, wherein the search message comprises the address of the terminal; and responding to broadcast messages sent by each base station, and acquiring a recommended PLMN list, wherein the broadcast messages comprise the type of the base station, the PLMN of an operator to which the base station belongs and the recommended PLMN list, and the recommended PLMN list comprises a first recommended PLMN list or a second recommended PLMN list.
In order to achieve the above object, a second aspect of the present invention provides a network selection method, including: obtaining configuration information issued by an operator server, wherein the configuration information comprises the type of a base station and a local Public Land Mobile Network (PLMN) of an operator to which the base station belongs, the type of the base station is determined by the operator according to the coverage range negotiation of the base station, and the type of the base station comprises a different network roaming base station or a different network roaming regression base station; and responding to a search message sent by the terminal, sending a broadcast message to the terminal, wherein the broadcast message comprises the type of the base station and the PLMN of the operator to which the base station belongs, so that the terminal generates a different network roaming base station list and a different network roaming regression base station list according to the type of the base station and the PLMN of the operator to which the base station belongs, and determines the base station to be accessed and accesses the base station according to the PLMN corresponding to the cell in which the terminal is currently located, the different network roaming base station list and the different network roaming regression base station list.
After the step of obtaining the configuration information issued by the operator server and before the step of sending the broadcast message to the terminal, the method further comprises the following steps: determining the priority level of the PLMN corresponding to the base station according to the type of an operator; and writing the priority level of the PLMN corresponding to the base station into the broadcast message.
The step of determining the priority level of the PLMN corresponding to the base station according to the type of the operator comprises the following steps: if the type of the base station is determined to be the different-network roaming base station, the priority level corresponding to the PLMN of the roaming operator is higher than the priority level corresponding to the PLMN of the home operator; if the type of the base station is determined to be the heterogeneous network roaming regression base station, the priority level corresponding to the PLMN of the home operator is higher than the priority level corresponding to the PLMN of the roaming operator.
In order to achieve the above object, a third aspect of the present invention provides a network selection apparatus, comprising: the generation module is used for generating a different network roaming base station list and a different network roaming regression base station list according to the type of each obtained base station and the local public land mobile network PLMN of the operator to which each base station belongs, wherein the type of the base station is the type of the base station determined by the operator according to the coverage range negotiation of the base station, and the type of the base station comprises the different network roaming base station or the different network roaming regression base station; and the selective access module is used for determining and accessing the base station to be accessed according to the PLMN, the different network roaming base station list and the different network roaming regression base station list corresponding to the cell where the terminal is currently located.
In order to achieve the above object, a fourth aspect of the present invention provides a base station comprising: the acquisition module is used for acquiring configuration information issued by an operator server, wherein the configuration information comprises the type of a base station and a local Public Land Mobile Network (PLMN) of an operator to which the base station belongs, the type of the base station is determined by the operator according to the coverage range negotiation of the base station, and the type of the base station comprises a different network roaming base station or a different network roaming regression base station; and the sending module is used for responding to a search message sent by the terminal, sending a broadcast message to the terminal, wherein the broadcast message comprises the type of the base station and the PLMN of the operator to which the base station belongs, so that the terminal generates a different network roaming base station list and a different network roaming regression base station list according to the type of the base station and the PLMN of the operator to which the base station belongs, and determines a base station to be accessed and accesses the base station according to the PLMN, the different network roaming base station list and the different network roaming regression base station list corresponding to the cell in which the terminal is currently located.
The invention has the following advantages: the different network roaming base station list and the different network roaming regression base station list are generated according to the type of each base station and the PLMN of the operator to which each base station belongs, so that the terminal can search and obtain the base station to be accessed according to the PLMN, the different network roaming base station list and the different network roaming regression base station list corresponding to the current cell, the speed of selecting the network by the terminal is increased, the terminal which is roaming can be quickly accessed to the cell corresponding to the different network roaming base station, the terminal which is roamed back can quickly return to the cell corresponding to the different network roaming regression base station, unnecessary roaming cost of a user is reduced, and inter-network roaming settlement cost between operators is clear and definite.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a flowchart of a network selection method according to a first embodiment of the present invention;
fig. 2 is a flowchart of a network selection method according to a second embodiment of the present invention;
fig. 3 is a flowchart of a network selection method according to a second embodiment of the present invention;
fig. 4 is a flowchart of a network selection method according to a third embodiment of the present invention;
fig. 5 is a block diagram of a network selection apparatus according to a fourth embodiment of the present invention;
fig. 6 is a block diagram of a base station according to a fifth embodiment of the present invention.
In the drawings:
501: the generation module 502: selective access module
601: the obtaining module 602: transmission module
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
A first embodiment of the present invention relates to a network selection method. For enabling a terminal to autonomously and quickly select a wireless network to be accessed to reduce roaming charges.
The following describes details of the network selection method in this embodiment in detail, and the following is only for facilitating understanding of the details of the network selection method and is not essential to implementing the network selection method.
Fig. 1 is a flowchart of a network selection method in this embodiment, where the method is applicable to a terminal, and the terminal may be a smartphone or other device with a communication function. The method may include the following steps.
In step 101, a list of different network roaming base stations and a list of different network roaming regression base stations are generated according to the obtained types of the base stations and the PLMNs of the operators to which the base stations belong.
The type of the base station is determined by an operator according to the coverage negotiation of the base station, and the type of the base station comprises a different network roaming base station or a different network roaming regression base station.
It should be noted that, in this embodiment, the operators include a roaming operator and a home operator, and when the terminal is located between the roaming operator and the home operator, negotiation is performed according to coverage ranges of base stations to which the roaming operator and the home operator belong, so as to determine types of the base stations, for example, the roaming operator may mark a base station located in a roaming area as a heterogeneous roaming base station, and mark a base station located in an edge region of the roaming area and in a range that the base station of the home operator can cover as a heterogeneous roaming return base station. The roaming area may be a place which cannot be covered by the operator base station, or a place where the signal of the operator base station is weak, so that when the terminal is in the roaming area, the terminal cannot register to the base station corresponding to the home PLMN of the terminal, that is, the terminal is in a roaming state. When each base station sends a broadcast message to the terminal, the type of the base station is carried, that is, the base station is a different network roaming base station or a different network roaming returning base station, so that the terminal can select and adjust the network to be accessed in time according to the type of the base station.
In step 102, a base station to be accessed is determined and accessed according to the PLMN, the list of the different network roaming base stations and the list of the different network roaming regression base stations corresponding to the cell in which the terminal is currently located.
It should be noted that, the terminal receives PLMN information sent by the base station corresponding to the current cell, matches the PLMN information with PLMN information in the different-network roaming base station list and the different-network roaming regression base station list, may obtain an optimal PLMN, and further determines the base station corresponding to the optimal PLMN, and uses the base station as the base station to be accessed, thereby increasing the speed of screening the base station by the terminal, shortening the time for the terminal to register in the communication network, and bringing good user experience to the user.
In a specific implementation, a different network roaming base station list is searched, whether a PLMN corresponding to a cell where a terminal is currently located exists in the different network roaming base station list is judged, and if yes, a different network roaming base station selection process is started; otherwise, searching a different network roaming regression base station list, judging whether a PLMN corresponding to a cell where the terminal is currently located exists in the different network roaming regression base station list, and if yes, starting a different network roaming regression base station selection process; and determining a base station to be accessed and accessing according to the selection result of the selection process of the different network roaming base station or the selection process of the different network roaming regression base station.
It should be noted that, when the PLMN corresponding to the cell where the terminal is currently located exists in the list of the different-network roaming base stations, it indicates that the terminal is currently in the different-network roaming state, and wants to access to the cell corresponding to the different-network roaming base station, the different-network roaming base station selection process is started to screen the base stations, so as to obtain the base stations to be accessed; when the PLMN corresponding to the cell where the terminal is currently located exists in the list of the heterogeneous network roaming regression base stations, the PLMN indicates that the terminal is currently in a heterogeneous network roaming regression state, namely the PLMN wants to return to the base station to which the home operator of the terminal belongs, a heterogeneous network roaming regression base station selection process is started, the base stations are screened, and the base stations to be accessed are obtained.
The method for selecting the heterogeneous network roaming base station comprises the following steps: acquiring the PLMN of an operator to which the base station belongs in the different network roaming base station list and the priority level of the PLMN; and determining a base station to be accessed according to the priority level of the PLMN and a first recommended PLMN list, wherein the first recommended PLMN list is a PLMN list recommended by the different-network roaming base station and obtained according to the broadcast message of the different-network roaming base station.
It should be noted that the first recommended PLMN list is obtained by the different-network roaming base station marking the base station with a better signal according to the current network state, and recommending the base station to the terminal, for example, the broadcast message of the different-network roaming base station carries the first recommended PLMN list, so that the terminal can obtain the PLMN list corresponding to the base station with a better signal after receiving the broadcast message, thereby facilitating the terminal to select the base station more quickly.
The method comprises the following steps of selecting a base station for roaming and returning in a different network, wherein the step comprises the following steps: acquiring the PLMN of an operator to which the base station belongs and the priority level of the PLMN in the heterogeneous network roaming regression base station list; if the fact that the registered PLMN of the terminal is included in the heterogeneous network roaming regression base station list is determined, selecting a base station corresponding to the registered PLMN for access; and if the fact that the base station corresponding to the registered PLMN is accessed fails is determined, the base station to be accessed is determined according to the priority level of the PLMN and a second recommended PLMN list, wherein the second recommended PLMN list is the PLMN list recommended by the different network roaming regression base station and obtained according to the broadcast message of the different network roaming regression base station.
It should be noted that when the terminal starts the procedure for selecting the inter-network roaming regression base station, it is preferable to search whether the obtained base station information includes a base station corresponding to the registered PLMN, if so, the base station is preferentially accessed to the registered PLMN, otherwise, if the obtained base station information does not include a base station corresponding to the registered PLMN, or the access to the base station corresponding to the registered PLMN fails, the base station is screened according to the second recommended PLMN list and the priority level of the PLMN, so as to obtain the base station to be accessed. The second recommended PLMN list is that the different network roaming regression base station marks the different network roaming regression base station with better signal according to the current network state, and recommends the different network roaming regression base station to the terminal so as to facilitate the terminal to select the base station to access more quickly.
In the embodiment, the different network roaming base station list and the different network roaming regression base station list are generated according to the type of each base station and the PLMN of the operator to which each base station belongs, so that the terminal can search and obtain the base station to be accessed according to the PLMN, the different network roaming base station list and the different network roaming regression base station list corresponding to the cell in which the terminal is currently located, the speed of selecting the network by the terminal is increased, the terminal which is roaming can be quickly accessed to the cell corresponding to the different network roaming base station, the terminal which is roamed back can be quickly returned to the cell corresponding to the different network roaming regression base station, unnecessary roaming cost of a user is reduced, and inter-network roaming settlement cost between operators is clear and definite.
A second embodiment of the present invention relates to a network selection method. The second embodiment is substantially the same as the first embodiment, and mainly differs therefrom in that: and the base station acquires the address of the terminal by sending the search message, and acquires the recommended PLMN list after receiving the broadcast message sent by the base station.
Fig. 2 is a flowchart of a network selection method in this embodiment, where the method is applicable to a terminal, and the terminal may be a smartphone or other device with a communication function. The method may include the following steps.
In step 201, a search message is sent to the wireless network.
Wherein the search message includes an address of the terminal so that the base station obtains the address of the terminal.
It should be noted that the address of the terminal may be a network address of the terminal, or may also be an identifier of the terminal in a wireless network, so that the base station can obtain the address of the terminal after receiving the search message, and further send information required by the terminal to the terminal, specifically, the information required by the terminal may be configuration information of the base station to the terminal, frequency point information of the base station, and the like.
In step 202, a recommended PLMN list is obtained in response to a broadcast message sent by each base station.
The broadcast message comprises the type of the base station, the PLMN of an operator to which the base station belongs and a recommended PLMN list, and the recommended PLMN list comprises a first recommended PLMN list or a second recommended PLMN list.
It should be noted that the recommended PLMN list includes a first recommended PLMN list and a second recommended PLMN list, the recommended PLMN list is used to help the terminal to find a PLMN of a base station to be accessed more quickly, types of the base stations in the first recommended list are all the inter-network roaming base stations, and types of the base stations in the second recommended list are all the inter-network roaming returning base stations.
In step 203, a list of the inter-network roaming base stations and a list of the inter-network roaming regression base stations are generated according to the acquired types of the base stations and the PLMNs of the operators to which the base stations belong.
In step 204, a base station to be accessed is determined and accessed according to the PLMN, the list of the different network roaming base stations and the list of the different network roaming regression base stations corresponding to the cell in which the terminal is currently located.
It should be noted that steps 203 to 204 in this embodiment are the same as steps 101 to 102 in the first embodiment, and are not repeated herein.
In one implementation, fig. 3 is a block diagram of a network selection method, which may specifically include the following steps.
In step 301, the terminal is powered on and sends a search message to search for a PLMN.
It should be noted that the search message carries an Internet Protocol address (IP) of the terminal, so that the base station can know the address of the base station and then send the message to the terminal.
In step 302, in response to the broadcast message sent by each base station, a recommended PLMN list, a type of each base station, and a PLMN of an operator to which each base station belongs are obtained.
For example, the first recommendation list includes base station 1, base station 2, and base station 3, where the PLMNs corresponding to the base stations are 46001, 46002, and 46003, respectively, and the base station types of base station 1, base station 2, and base station 3 are all inter-network roaming base stations; the second recommendation list includes base station 4, base station 5, and base station 6, which correspond to PLMNs 46004, 46005, and 46006, respectively, and the base station types of base station 4, base station 5, and base station 6 are all inter-network roaming returning base stations.
In step 303, a list of the inter-network roaming base stations and a list of the inter-network roaming regression base stations are generated.
It should be noted that the types of the base stations in the list of the different network roaming base stations are all different network roaming base stations, and the types of the base stations in the list of the different network roaming regression base stations are all different network roaming regression base stations.
In step 304, a list of the foreign roaming base stations is searched.
In step 305, determining whether a PLMN corresponding to a cell in which the terminal is currently located exists in the list of the different-network roaming base stations, if so, executing step 306; if not, go to step 307.
In step 306, a base station to be accessed is determined according to the priority level of the PLMN corresponding to the base station in the foreign roaming base station list and the first recommended PLMN list.
It should be noted that, the priority levels of the PLMNs corresponding to the base stations in the list of the different-network roaming base stations are arranged in descending order, that is, the highest priority level is arranged at the top of the list; and if the first recommended PLMN list comprises the base stations in the foreign network roaming base station list and the priority level of the first recommended PLMN list is high, the base stations are accessed preferentially. For example, the first recommended PLMN list includes base station 1 and base station 2, and the different-network roaming base station list includes base station 2, base station 7, and base station 8, and the priority level of the PLMN corresponding to base station 2 is the highest, and is followed by base station 7 and base station 8; the terminal will then select base station 2 as the base station to access.
In step 307, a list of the heterogeneous roaming regression base stations is searched.
In step 308, it is determined whether a PLMN corresponding to the cell in which the terminal is currently located exists in the list of the heterogeneous roaming regression base stations, and if so, step 309 is executed; if not, go to step 311.
In step 309, if it is determined that the list of the inter-network roaming regression base stations includes the registered PLMN of the terminal, the base station corresponding to the registered PLMN is selected as the base station to be accessed.
It should be noted that the registered PLMN therein indicates a PLMN registered by the terminal before the terminal is turned off or disconnected last time.
In step 310, if it is determined that the access to the base station corresponding to the registered PLMN fails, the base station to be accessed is determined according to the priority level of the PLMN and the second recommended PLMN list.
It should be noted that the priority level of the PLMN is the priority level of the PLMN corresponding to the base station in the heterogeneous roaming regression base station list, and is similar to the priority ranking in the heterogeneous roaming base station list, and the priority levels of the PLMNs corresponding to the base stations in the heterogeneous roaming regression base station list can be arranged according to a descending order, that is, the highest priority level is arranged at the top of the list; and if the second recommended PLMN list comprises the base stations in the heterogeneous network roaming regression base station list and the priority level of the base stations is high, preferentially accessing the base stations. For example, the second recommended PLMN list includes base station 5 and base station 6, and the inter-network roaming base station list includes base station 5, base station 6, and base station 9, and the priority level of the PLMN corresponding to base station 5 is higher than the priority level of the PLMN corresponding to base station 6, then the terminal may select base station 5 as the base station to be accessed.
In step 311, a PLMN is selected according to the existing PLMN selection procedure, and a base station to be accessed is determined.
It should be noted that, in the existing PLMN selection process, the terminal may maintain some PLMN lists, which sort the PLMNs according to priority, then search downward from high priority, and select a base station that wants to access to perform access. According to the descending order of the priority of the PLMN, the Registered PLMN (Registered PLMN, RPLMN), the Home PLMN (Home PLMN, HPLMN), the User Controlled PLMN (User Controlled PLMN, UPLMN), the operator Controlled PLMN (operator Controlled PLMN, OPLMN) and the Visited PLMN (visual PLMN, VPLMN) are arranged in sequence, wherein the HPLMN is consistent with the priority level of the peer Home PLMN (Equivalent HPLMN, EHPLMN). The HPLMN may be obtained from a configuration file in a Universal Subscriber Identity Module (USIM) of the terminal. For a certain terminal, there is only one HPLMN. The EHPLMN is a PLMN considered to be equivalent to its HPLMN in the process of selecting a PLMN by the terminal, and may be obtained from a configuration file in the USIM card. The terminal internally maintains a VPLMN list and stores PLMN identification information issued by the visited network. When the terminal is switched or roamed, it needs to register to the VPLMN. At this time, the terminal may return to the home network by periodically searching for a network according to the network status. The UPLMN is a parameter related to PLMN selection that is pre-stored in a configuration file on the USIM card. The configuration file contains a list of at least 8 PLMN entries, each PLMN entry also containing the access technology employed by the PLMN. The sequence of each PLMN item in the PLMN list is prioritized, the priority of the first PLMN item is highest, and the priorities are sequentially reduced. The terminal may select a PLMN in the priority selection list when automatically selecting a network. The OPLMN is a parameter related to PLMN selection, which is pre-stored in a configuration file on the USIM card. The file contains a list of n operator determined prioritized PLMN networks. The first PLMN has the highest priority, the nth PLMN has the lowest priority, and n is a positive integer greater than or equal to 1.
In step 312, access is made to the cell corresponding to the base station according to the identifier of the base station to be accessed.
In the embodiment, the recommended PLMN list is obtained by receiving the broadcast message sent by the base station, and the base station to be accessed is determined according to the first recommended PLMN list, the second recommended PLMN list and the priority level of the PLMN, so that the terminal can quickly select the base station to be accessed, unnecessary roaming cost of a user is reduced, and inter-network roaming settlement cost among operators is clear and definite.
A third embodiment of the present invention relates to a network selection method. Fig. 4 is a flowchart of a network selection method in this embodiment, where The method is applicable to a base station, and The base station may be a base station in a third Generation Mobile Communication network (3G) or a base station in a fourth Generation Mobile Communication network (4G), where The base station may be actually configured and is not limited to The foregoing description, and other base stations not illustrated are also within The protection scope of The present invention, and are not repeated herein.
The method may include the following steps.
In step 401, the configuration information issued by the operator server is obtained.
The configuration information comprises the type of the base station and the PLMN of the operator to which the base station belongs, the type of the base station is determined by the operator according to the coverage range negotiation of the base station, and the type of the base station comprises a different network roaming base station or a different network roaming regression base station.
It should be noted that, an operator may include multiple base stations, and the operator server may determine the type of each base station according to the location of each base station and the coverage of the base station when performing initial network planning, for example, the roaming operator may mark a base station in a roaming area as a heterogeneous roaming base station, and mark a base station in an edge region of the roaming area and in a range that the base station of the home operator can cover as a heterogeneous roaming returning base station. The roaming area may be a place which cannot be covered by the operator base station, or a place where the signal of the operator base station is weak, so that when the terminal is in the roaming area, the terminal cannot register to the base station corresponding to the home PLMN of the terminal, that is, the terminal is in a roaming state.
In one specific implementation, after the step of obtaining the configuration information issued by the operator server, and before the step of sending the broadcast message to the terminal, the method further includes: determining the priority level of the PLMN corresponding to the base station according to the type of an operator; and writing the priority level of the PLMN corresponding to the base station into the broadcast message.
It should be noted that, according to different PLMN roles, the PLMNs may be classified into different categories, such as RPLMN, HPLMN, UPLMN, OPLMN, VPLMN, and the like, where the HPLMN is consistent with the priority level of the EHPLMN. The priority levels of the various classes of PLMNs also differ.
In a specific implementation, if the type of the base station is determined to be a heterogeneous roaming base station, the priority level corresponding to the PLMN of the roaming operator is higher than the priority level corresponding to the PLMN of the home operator; if the type of the base station is determined to be the heterogeneous network roaming regression base station, the priority level corresponding to the PLMN of the home operator is higher than the priority level corresponding to the PLMN of the roaming operator.
It should be noted that the inter-network roaming base station preferentially selects a base station corresponding to a preferred PLMN specified by the roaming operator, and recommends the PLMN of the base station to the terminal to be accessed; the heterogeneous roaming returning base station preferentially selects a base station corresponding to a preferred PLMN (usually, HPLMN or EHPLMN) specified by the home operator, and recommends the PLMN of the base station to the terminal to be accessed. And further, the time for the terminal to search the network is reduced, and the power consumption is reduced.
In step 402, a broadcast message is transmitted to the terminal in response to a search message transmitted by the terminal.
The broadcast message comprises the type of the base station and the PLMN of the operator to which the base station belongs, so that the terminal generates a different network roaming base station list and a different network roaming regression base station list according to the type of the base station and the PLMN of the operator to which the base station belongs, and determines the base station to be accessed and accesses the base station according to the PLMN, the different network roaming base station list and the different network roaming regression base station list corresponding to the cell in which the terminal is currently located.
It should be noted that the broadcast message may further include a recommended PLMN list, where the recommended PLMN list is used to help the terminal to find a PLMN of a base station to be accessed more quickly, and the recommended PLMN list includes a first recommended PLMN list and a second recommended PLMN list, where types of base stations in the first recommended PLMN list are all inter-network roaming base stations, and types of base stations in the second recommended PLMN list are all inter-network roaming returning base stations.
In the embodiment, by obtaining the configuration information issued by the operator server, the base station can obtain the type of the base station and the PLMN of the operator to which the base station belongs, and encapsulates the type of the base station and the PLMN of the operator to which the base station belongs in a broadcast message, sends to the terminal to be accessed, so that the terminal can generate a list of different network roaming base stations and a list of different network roaming regression base stations, and search and obtain a base station to be accessed according to the PLMN, the list of different network roaming base stations and the list of different network roaming regression base stations corresponding to the cell in which the terminal is currently located, thereby accelerating the speed of selecting a network by the terminal, the terminal which is roaming can be quickly accessed to the cell corresponding to the different-network roaming base station, and the terminal which is roamed back can quickly return to the cell corresponding to the different-network roaming returning base station, so that unnecessary roaming cost of a user is reduced, and inter-network roaming settlement cost among operators is clear and definite.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
A fourth embodiment of the present invention relates to a network selection device, and specific implementation of the network selection device can be referred to in the related description of the first embodiment, and repeated descriptions are omitted. It should be noted that, the specific implementation of the apparatus in this embodiment may also refer to the related description of the second embodiment, but is not limited to the above two examples, and other unexplained examples are also within the protection scope of the apparatus.
Fig. 5 is a network selection device according to the present embodiment, which mainly includes: a generating module 501, configured to generate a list of different-network roaming base stations and a list of different-network roaming regression base stations according to the obtained types of the base stations and PLMNs of operators to which the base stations belong, where the types of the base stations are types of base stations determined by an operator according to coverage negotiation of the base stations, and the types of the base stations include different-network roaming base stations or different-network roaming regression base stations; the selective access module 502 is configured to determine a base station to be accessed and access the base station according to the PLMN, the list of different-network roaming base stations, and the list of different-network roaming regression base stations corresponding to the cell in which the terminal is currently located.
A fifth embodiment of the present invention relates to a base station, and specific implementation of the base station may refer to the description related to the third embodiment, but is not limited to this embodiment, and other undescribed embodiments are also within the protection scope of the present device, and repeated descriptions are omitted here.
Fig. 6 is a base station in the present embodiment, including: an obtaining module 601, configured to obtain configuration information issued by an operator server, where the configuration information includes a type of a base station and a PLMN of an operator to which the base station belongs, the type of the base station is a type of the base station determined by the operator according to a coverage negotiation of the base station, and the type of the base station includes a different-network roaming base station or a different-network roaming regression base station; a sending module 602, configured to send a broadcast message to a terminal in response to a search message sent by the terminal, where the broadcast message includes a type of a base station and a PLMN of an operator to which the base station belongs, so that the terminal generates a different-network roaming base station list and a different-network roaming regression base station list according to the type of the base station and the PLMN of the operator to which the base station belongs, and determines a base station to be accessed and accesses the base station according to the PLMN, the different-network roaming base station list, and the different-network roaming regression base station list corresponding to a cell in which the terminal is currently located.
It should be noted that each module referred to in this embodiment is a logical module, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, elements that are not so closely related to solving the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that other elements are not present in the present embodiment.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A method of network selection, the method comprising:
generating a different network roaming base station list and a different network roaming regression base station list according to the type of each acquired base station and a local Public Land Mobile Network (PLMN) of an operator to which each base station belongs, wherein the type of the base station is determined by the operator according to the coverage range negotiation of the base station, and the type of the base station comprises the different network roaming base station or the different network roaming regression base station;
and determining a base station to be accessed and accessing according to the PLMN corresponding to the cell where the terminal is located, the different network roaming base station list and the different network roaming regression base station list.
2. The method of claim 1, wherein the determining a base station to be accessed according to the PLMN, the list of the inter-network roaming base stations, and the list of the inter-network roaming regression base stations corresponding to the cell in which the terminal is currently located and the accessing step comprise:
searching the different network roaming base station list, judging whether the PLMN corresponding to the cell where the terminal is currently located exists in the different network roaming base station list, and if yes, starting a different network roaming base station selection process;
otherwise, searching the different network roaming regression base station list, judging whether the PLMN corresponding to the cell where the terminal is currently located exists in the different network roaming regression base station list, and if yes, starting a different network roaming regression base station selection process;
and determining a base station to be accessed and accessing according to the selection process of the different network roaming base station or the selection result of the different network roaming regression base station selection process.
3. The network selection method according to claim 2, wherein the step of the inter-network roaming base station selection procedure includes:
acquiring a PLMN of an operator to which the base station belongs and a priority level of the PLMN in the different network roaming base station list;
and determining the base station to be accessed according to the priority level of the PLMN and a first recommended PLMN list, wherein the first recommended PLMN list is a PLMN list recommended by the different network roaming base station and obtained according to the broadcast message of the different network roaming base station.
4. The method of claim 2, wherein the step of the inter-network roaming regression base station selection process comprises:
acquiring a PLMN of an operator to which the base station belongs and a priority level of the PLMN in the heterogeneous network roaming regression base station list;
if the fact that the registered PLMN of the terminal is included in the heterogeneous network roaming regression base station list is determined, selecting a base station corresponding to the registered PLMN as the base station to be accessed;
and if the base station corresponding to the registered PLMN is determined to be accessed unsuccessfully, determining the base station to be accessed according to the priority level of the PLMN and a second recommended PLMN list, wherein the second recommended PLMN list is the PLMN list recommended by the heterogeneous network roaming regression base station and obtained according to the broadcast message of the heterogeneous network roaming regression base station.
5. The network selection method according to claim 3 or 4, wherein before the step of generating the list of the inter-network roaming base stations and the list of the inter-network roaming regression base stations according to the obtained types of the base stations and the PLMNs of the operators to which the base stations belong, the method further comprises:
sending a search message to a wireless network so that the base station obtains the address of the terminal, wherein the search message comprises the address of the terminal;
and responding to the broadcast message sent by each base station, and obtaining a recommended PLMN list, wherein the broadcast message comprises the type of the base station, the PLMN of the operator to which the base station belongs and the recommended PLMN list, and the recommended PLMN list comprises a first recommended PLMN list or a second recommended PLMN list.
6. A method of network selection, the method comprising:
obtaining configuration information issued by an operator server, wherein the configuration information comprises the type of a base station and a local Public Land Mobile Network (PLMN) of an operator to which the base station belongs, the type of the base station is determined by the operator according to the coverage range negotiation of the base station, and the type of the base station comprises a different network roaming base station or a different network roaming regression base station;
responding to a search message sent by a terminal, sending a broadcast message to the terminal, wherein the broadcast message comprises the type of the base station and the PLMN of an operator to which the base station belongs, so that the terminal generates a different network roaming base station list and a different network roaming regression base station list according to the type of the base station and the PLMN of the operator to which the base station belongs, and determines a base station to be accessed and accesses the base station according to the PLMN corresponding to a cell in which the terminal is currently located, the different network roaming base station list and the different network roaming regression base station list.
7. The network selection method of claim 6, wherein after the step of obtaining configuration information delivered by an operator server and before the step of sending a broadcast message to the terminal, the method further comprises:
determining the priority level of the PLMN corresponding to the base station according to the type of the operator;
and writing the priority level of the PLMN corresponding to the base station into the broadcast message.
8. The method of claim 7, wherein the step of determining the priority level of the PLMN corresponding to the base station according to the type of the operator comprises:
if the type of the base station is determined to be the different-network roaming base station, the priority level corresponding to the PLMN of the roaming operator is higher than the priority level corresponding to the PLMN of the home operator;
if the type of the base station is determined to be the heterogeneous network roaming regression base station, the priority level corresponding to the PLMN of the home operator is higher than the priority level corresponding to the PLMN of the roaming operator.
9. A network selection apparatus, comprising:
a generating module, configured to generate a list of different-network roaming base stations and a list of different-network roaming regression base stations according to the obtained types of the base stations and a local public land mobile network PLMN of an operator to which each base station belongs, where the types of the base stations are types of the base stations determined by an operator according to a coverage negotiation of the base stations, and the types of the base stations include different-network roaming base stations or different-network roaming regression base stations;
and the selective access module is used for determining a base station to be accessed and accessing according to the PLMN corresponding to the cell where the terminal is currently located, the different network roaming base station list and the different network roaming regression base station list.
10. A base station, comprising:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring configuration information issued by an operator server, the configuration information comprises the type of a base station and a local Public Land Mobile Network (PLMN) of an operator to which the base station belongs, the type of the base station is determined by the operator according to the coverage range negotiation of the base station, and the type of the base station comprises a different network roaming base station or a different network roaming regression base station;
a sending module, configured to send a broadcast message to a terminal in response to a search message sent by the terminal, where the broadcast message includes a type of the base station and a PLMN of an operator to which the base station belongs, so that the terminal generates a list of inter-network roaming base stations and a list of inter-network roaming regression base stations according to the type of the base station and the PLMN of the operator to which the base station belongs, and determines a base station to be accessed and accesses the base station according to the PLMN corresponding to a cell in which the terminal is currently located, the list of inter-network roaming base stations, and the list of inter-network roaming regression base stations.
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