CN111372299B

CN111372299B - Network searching list generation method, network searching method and corresponding devices

Info

Publication number: CN111372299B
Application number: CN201811602882.3A
Authority: CN
Inventors: 付雷; 于亚军; 金辉
Original assignee: Huawei Device Co Ltd
Current assignee: Huawei Device Co Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2022-03-29
Anticipated expiration: 2038-12-26
Also published as: JP2022515481A; JP7278382B2; CN111372299A; WO2020134899A1

Abstract

The embodiment of the application discloses a network searching list generating method, a network searching method and a corresponding device, wherein in the scheme, a non-access layer in UE acquires network access information of the UE, and the network access information comprises an equivalent home network EHPLMN of the UE and a network type corresponding to the EHPLMN; then, the non-access layer determines a target network searched in a network searching process when the UE communicates through each network type based on network access information; and the non-access stratum generates a network searching list containing the corresponding relation between the network type and the target network based on the target network searched by the UE in the network searching process. According to the scheme disclosed by the embodiment of the application, when the access layer searches the network according to the network searching list, the target network to be searched can be determined according to the network type during network searching, so that the search of unsupported communication networks is avoided, the time required by the network searching process is reduced, the network residing speed is further accelerated, the network residing efficiency is improved, and the user experience is improved.

Description

Network searching list generation method, network searching method and corresponding devices

Technical Field

The application relates to the technical field of communication, in particular to a network searching list generation method, a network searching method and a corresponding device.

Background

A Public Land Mobile Network (PLMN) is a Network for providing a Land Mobile communication service to the Public, and the Network is usually interconnected with a Public switched telephone Network to form a communication Network of equal size throughout a region or a country. In this case, User Equipment (UE) may communicate via PLMNs provided by respective operators.

With the development of communication technology, various operators can support various types of network systems. Due to the consideration of business factors and the like, equipment lease sometimes occurs among operators, namely, an operator A leases equipment of an operator B in a partial region or a partial standard, so that corresponding equipment does not need to be configured in the partial region or for the partial standard. For example, china mobile can support network systems such as global system for mobile communication (GSM), time division-synchronous code division multiple access (TD-SCDMA), time division long term evolution (TD-LTE), and the like, while china mobile can support network systems such as GSM, and china mobile can only set devices required by TD-SCDMA and TD-LTE in some areas and rent devices required by the network system GSM set in the area by china mobile, so that devices required by GSM need not be set.

If an operator a leases a device of an operator B, in order to enable a Subscriber Identity Module (SIM) of the operator a to communicate with a communication network corresponding to the leased device, network support information is usually set on the SIM card, where the network support information indicates that the SIM card will use the communication networks of each network type supported by the operator a and the operator B as Equivalent home networks (EHPLMN) in a network searching process, so that the UE can search for the communication network corresponding to the leased device, so as to implement communication using the communication network.

However, in the research process of the present application, the inventor finds that, in the prior art, if a UE to which an SIM card of an operator a is applied resides in a communication network corresponding to a leased device, after a network handover occurs, since the UE resides in the communication network corresponding to the leased device provided by an operator B before the network handover occurs, the UE preferentially selects another network standard supported by the operator B during a network search process, and searches for a network standard supported by the operator a after determining that the network residence cannot be achieved in the other network standard supported by the operator B, so as to perform communication according to the network standard supported by the operator a. Because the process of searching for a network under other network standards supported by the operator B consumes a period of time, the time required for the network searching process is prolonged, the network searching is slow, the network residing speed is further affected, the network residing efficiency is reduced, and the user experience is poor.

Disclosure of Invention

In order to solve the problems that in the prior art, if the SIM card of the operator a is in the communication network corresponding to the renting device, after network switching occurs, network searching is slow, the network residing speed is affected, and the network residing efficiency is reduced, the embodiment of the application discloses a network searching list generation method, a network searching method, and a corresponding device.

In a first aspect, an embodiment of the present application provides a method for generating a web search list, including:

a non-access layer in User Equipment (UE) acquires network access information of the UE, wherein the network access information comprises an equivalent home network (EHPLMN) of the UE and a network type corresponding to the EHPLMN;

the non-access layer determines a target network searched in a network searching process when the UE communicates through each network type based on the network access information;

and the non-access stratum generates a network searching list containing the corresponding relation between the network type and the target network based on the target network searched by the UE in the network searching process.

According to the scheme disclosed by the embodiment of the application, the network searching list generated by the non-access layer contains the corresponding relation between the network type and the target network, and under the condition, when the access layer searches the network according to the network searching list, the target network to be searched can be determined according to the network type during network searching, so that the search of unsupported communication networks is avoided, the time required by the network searching process is reduced, the network residing speed is further accelerated, the network residing efficiency is improved, and the user experience is improved.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the acquiring, by the non-access stratum, network access information of the UE includes one or more of the following options:

the non-access layer reads the storage space of the UE and acquires network access information pre-stored in the storage space;

the non-access layer reads a Subscriber Identity Module (SIM) card in the UE and acquires network access information pre-stored in the SIM card;

the non-access layer accesses the cloud end through the wireless network and obtains network access information stored in the cloud end in advance.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, when the network access information is stored in a storage space of the UE or stored in the SIM card, the method further includes:

the non-access layer accesses the cloud end every other preset period to acquire network access information stored in the cloud end;

and the non-access layer updates the network access information stored in the storage space of the UE or the SIM card through the network access information stored in the cloud.

Through the steps, the non-access layer can acquire the network access information stored in the cloud end in a mode of accessing the cloud end every other preset period, and the network access information in the storage space of the UE or the SIM card is updated.

With reference to the first aspect, in a third possible implementation manner of the first aspect, after the generating, by the non-access stratum, a network search list including a correspondence between the network type and the target network, the method further includes:

the non-access stratum transmits the network searching list to an access stratum in the UE;

alternatively, the first and second electrodes may be,

the non-access layer determines the target network type of the network searching;

the non-access layer determines a target network corresponding to the target network type based on the corresponding relation between the network type and the target network contained in the network searching list;

the non-access layer splits the network searching list and transmits the split network searching list to the access layer in the UE, wherein the split network searching list comprises a target network corresponding to the type of the target network.

Through the steps, the access layer can acquire the network searching list, and after the network searching list is acquired, the target network of the network searching is determined and the network is searched according to the target network type of the network searching and the network searching list.

Or the non-access layer splits the network searching list according to the target network type of the network searching, the split network searching list comprises the target network corresponding to the target network type, and transmits the split network searching list to the access layer, so that the access layer can realize network searching according to the split network searching list.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the determining, by the non-access stratum, a target network type of the network search includes:

when the network searching list is generated for the first time after the UE is started, the non-access layer acquires the network type of the communication network finally applied by the UE in the last starting process by inquiring the use log of the UE;

the non-access layer determines that the network type of the communication network applied last is the target network type of the network searching in the last starting process of the UE;

alternatively, the first and second electrodes may be,

after receiving a first network switching operation, the non-access layer determines a target network type of the current network search based on the first network switching operation;

alternatively, the first and second electrodes may be,

the non-access layer acquires the preset priority corresponding to each network type;

the non-access layer determines that the network type with the highest priority at present is the target network type of the network searching;

and when the network searching is carried out through the network type with the highest priority and the network searching fails, the non-access layer sequentially selects other network types as the target network type of the network searching based on the priority corresponding to each network type.

With reference to the third possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the determining, by the non-access stratum, a target network type of the network search includes:

after receiving a second network switching operation, the non-access stratum acquires application parameters of the UE, wherein the application parameters comprise: address and/or time;

the non-access layer determines the priority of each network type based on the application parameters of the UE and the corresponding relation between the preset application parameters and the priority of the network type;

the non-access layer determines that the network type with the highest priority is the target network type of the network searching;

alternatively, the first and second electrodes may be,

after receiving a third network handover operation, the non-access stratum acquires application parameters of the UE, wherein the application parameters include: address and/or time;

when the UE is connected with a wireless network, the non-access layer acquires the signal intensity sequence of each network type under the application parameters by accessing a server;

and the non-access stratum determines the network type with the strongest signal intensity as the target network type of the network searching.

Through the scheme of the embodiment of the application, the non-access layer can determine the target network type of the network searching based on the application parameters.

In a second aspect, an embodiment of the present application provides a network searching method, including:

an access layer in User Equipment (UE) acquires a network searching list, wherein the network searching list comprises a corresponding relation between network types and a target network, and the target network is a network which needs to be searched in the network searching process when the UE communicates through each network type;

the access layer determines the target network type of the network searching;

and the access layer determines the target network of the current network search and executes the network search operation based on the target network type and the network search list.

When the access layer searches the network according to the network searching list, the target network to be searched can be determined according to the network type during network searching, so that an unsupported communication network is avoided being searched, the time required by the network searching process is reduced, the network residing speed is further accelerated, the network residing efficiency is improved, and the user experience is improved.

With reference to the second aspect, in a first possible implementation manner of the second aspect, after the determining, by the access stratum, a target network of the current network search and searching for the network, the method further includes:

when m network searching operations are executed on the target network of the network searching, and each network searching operation fails, the access layer determines the type of the target network of the network searching again, wherein m is a preset positive integer;

and the access layer re-determines the target network of the current network search and executes the network search operation based on the re-determined target network type and the network search list.

In a third aspect, an embodiment of the present application provides a network searching method, including:

an access layer in User Equipment (UE) acquires a network searching list, wherein the network searching list comprises a target network corresponding to the type of the target network of the network searching;

and the access layer executes network searching operation based on the network searching list.

According to the scheme disclosed by the embodiment of the application, when the access layer searches the network according to the network searching list, the access layer can determine the target network corresponding to the target network type of the network searching, so that the communication network which is not supported is avoided being searched, the time required by the network searching process is reduced, the network residing speed is further accelerated, the network residing efficiency is improved, and the user experience is improved.

With reference to the third aspect, in a first possible implementation manner of the third aspect, after the performing, by the access stratum, a network searching operation based on the network searching list, the method further includes:

when the network searching operation is executed n times and each network searching operation fails, the access layer acquires a network searching list again, the network searching list obtained again contains a target network corresponding to the target network type determined again, and n is a preset positive integer;

and the access layer executes network searching operation based on the newly acquired network searching list.

In a fourth aspect, an embodiment of the present application provides a network searching list generating apparatus, including:

a first memory and a first processor;

a computer program executable on the first processor is stored in the first memory;

the first processor, when executing the computer program, performs the following operations:

acquiring network access information of User Equipment (UE), wherein the network access information comprises an equivalent home network (EHPLMN) of the UE and a network type corresponding to the EHPLMN;

determining a target network searched in a network searching process when the UE communicates through each network type based on the network access information;

and generating a network searching list containing the corresponding relation between the network type and the target network based on the target network searched by the UE in the network searching process.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the obtaining, by the first processor, network access information of the UE includes one or more of the following options:

the first processor reads the storage space of the UE and acquires network access information pre-stored in the storage space;

the first processor reads a Subscriber Identity Module (SIM) card in the UE and acquires network access information pre-stored in the SIM card;

the first processor accesses the cloud end through the wireless network and acquires network access information stored in the cloud end in advance.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, when the network access information is stored in a storage space of the UE or stored in the SIM card,

the first processor, when executing the computer program, is further configured to:

accessing the cloud end every other preset period to acquire network access information stored in the cloud end;

and updating the network access information stored in the storage space of the UE or the SIM card through the network access information stored in the cloud.

With reference to the fourth aspect, in a third possible implementation manner of the fourth aspect, after generating a network searching list including a correspondence between the network type and the target network,

the first processor, when executing the computer program, is further configured to transmit the network search list to an access stratum in the UE;

alternatively, the first and second electrodes may be,

the first processor, when executing the computer program, is further configured to determine a target network type of the network search of this time, determine a target network corresponding to the target network type based on a correspondence between network types included in the network search list and the target networks, split the network search list, and transmit the split network search list to an access layer in the UE, where the split network search list includes the target network corresponding to the target network type.

With reference to the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the determining, by the first processor, a target network type of the current network search includes:

when the network searching list is generated for the first time after the UE is started, the first processor acquires the network type of the communication network which is finally applied in the last starting process of the UE by inquiring the use log of the UE;

the first processor determines that the network type of the communication network applied last is the target network type of the network searching in the last starting process of the UE;

alternatively, the first and second electrodes may be,

after receiving a first network switching operation, the first processor determines a target network type of the current network search based on the first network switching operation;

alternatively, the first and second electrodes may be,

the first processor acquires preset priorities corresponding to various network types;

the first processor determines that the network type with the highest current priority is the target network type of the current network search;

and when the network searching is failed through the network type with the highest priority, the first processor sequentially selects other network types as the target network types of the current network searching based on the priorities corresponding to the network types.

With reference to the third possible implementation manner of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the determining, by the first processor, a target network type of the current network search includes:

after receiving a second network switching operation, the first processor obtains application parameters of the UE, wherein the application parameters comprise: address and/or time;

the first processor determines the priority of each network type based on the application parameters of the UE and the corresponding relation between the preset application parameters and the priorities of the network types;

the first processor determines the network type with the highest priority as the target network type of the current network search;

alternatively, the first and second electrodes may be,

after receiving a third network handover operation, the first processor obtains application parameters of the UE, where the application parameters include: address and/or time;

when the UE is connected with a wireless network, the first processor acquires signal intensity sequencing of each network type under the application parameters by accessing a server;

and the first processor determines the network type with the strongest signal intensity as the target network type of the current network search.

In a fifth aspect, an embodiment of the present application provides a network searching apparatus, including:

a second memory and a second processor;

a computer program executable on the second processor is stored in the second memory;

the second processor, when executing the computer program, performs the following operations:

acquiring a network searching list, wherein the network searching list comprises a corresponding relation between network types and a target network, and the target network is a network which needs to be searched in the network searching process when the UE communicates through each network type;

determining the target network type of the network searching;

and determining the target network of the current network search and executing the network search operation based on the target network type and the network search list.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, after the second processor determines and searches for a target network of a current network search, the second processor is further configured to, when network search operations are performed on the target network of the current network search m times and each network search operation fails, re-determine a type of the target network of the current network search, where m is a preset positive integer;

and the second processor is also used for re-determining the target network of the current network search and executing the network search operation based on the re-determined target network type and the network search list.

In a sixth aspect, an embodiment of the present application provides a network searching apparatus, including:

a third memory and a third processor;

a computer program executable on the third processor is stored in the third memory;

the third processor, when executing the computer program, performs the following operations:

acquiring a network searching list, wherein the network searching list comprises a target network corresponding to the type of the target network of the network searching;

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, after the network searching operation is performed based on the network searching list, the third processor is further configured to, when the network searching operation is performed n times and each network searching operation fails, re-acquire the network searching list, where the re-acquired network searching list includes a target network corresponding to a re-determined target network type, n is a preset positive integer, and the third processor performs the network searching operation based on the re-acquired network searching list.

In a seventh aspect, an embodiment of the present application provides a non-access stratum, including:

the first transceiver is used for acquiring network access information of User Equipment (UE), and the network access information comprises an equivalent home network (EHPLMN) of the UE and a network type corresponding to the EHPLMN;

a first processor, configured to determine, based on the network access information, a target network that is searched in a network searching process when the UE communicates through each network type, and generate a network searching list including a correspondence between the network type and the target network based on the target network that is searched in the network searching process by the UE.

In an eighth aspect, an access stratum in an embodiment of the present application includes:

the second transceiver is used for acquiring a network searching list, wherein the network searching list comprises a corresponding relation between network types and a target network, and the target network is a network which needs to be searched in the network searching process when the user equipment UE communicates through each network type;

and the second processor is used for determining the target network type of the network searching, determining the target network of the network searching and executing the network searching operation based on the target network type and the network searching list.

In a ninth aspect, an embodiment of the present application provides an access stratum, including:

the third transceiver is used for acquiring a network searching list which comprises a target network corresponding to the type of the target network of the current network searching;

and the third processor is used for executing the network searching operation based on the network searching list.

In a tenth aspect, embodiments of the present application provide a computer-readable medium, comprising instructions, which when executed on a computer, cause the computer to perform the method according to the first aspect.

In an eleventh aspect, embodiments of the present application provide a computer-readable medium, which includes instructions, when executed on a computer, cause the computer to perform the method according to the second aspect.

In a twelfth aspect, embodiments of the present application provide a computer-readable medium, which includes instructions that, when executed on a computer, cause the computer to perform the method according to the third aspect.

In a thirteenth aspect, an embodiment of the present application provides a network searching system,

the network searching system comprises a network searching list generating device according to the first aspect and a network searching device according to any one of the second aspect;

alternatively, the network searching system comprises a network searching list generating device according to the first aspect and a network searching device according to the third aspect.

In a fourteenth aspect, an embodiment of the present application provides a non-access stratum, including:

memory, a processor and a computer program stored on the memory and executable on the processor, when executing the computer program, implementing the method according to the first aspect.

In a fifteenth aspect, an embodiment of the present application provides an access stratum, including:

a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method according to the second aspect when executing the computer program.

In a sixteenth aspect, an embodiment of the present application provides an access stratum, including:

a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method according to the third aspect when executing the computer program.

The embodiment of the application discloses a network searching list generation method, a network searching method and a corresponding device, wherein in the network searching list generation method, a non-access layer in UE acquires network access information of the UE, and the network access information comprises an equivalent home network EHPLMN of the UE and a network type corresponding to the EHPLMN; then, the non-access layer determines a target network searched in a network searching process when the UE communicates through each network type based on the network access information; and the non-access stratum generates a network searching list containing the corresponding relation between the network type and the target network based on the target network searched by the UE in the network searching process.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a user equipment disclosed in an embodiment of the present application;

fig. 2 is a schematic workflow diagram of a method for generating a network searching list according to an embodiment of the present disclosure;

fig. 3 is a schematic view of a workflow of determining a target network type in the network searching list generating method disclosed in the embodiment of the present application;

fig. 4 is a schematic diagram of a display interface in a method for generating a search list disclosed in an embodiment of the present application;

fig. 5 is a schematic view of a workflow for determining a target network type in the network searching list generating method disclosed in the embodiment of the present application;

fig. 6 is a schematic view of a workflow for determining a target network type in the network searching list generating method disclosed in the embodiment of the present application;

fig. 7 is a schematic view of a workflow for determining a target network type in the network searching list generating method disclosed in the embodiment of the present application;

fig. 8 is a schematic workflow diagram of a network searching method disclosed in the embodiment of the present application;

fig. 9 is a schematic workflow diagram of another network searching method disclosed in the embodiment of the present application;

fig. 10 is a schematic structural diagram of a network searching list generating apparatus according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a network searching apparatus according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of another network searching apparatus disclosed in the embodiment of the present application;

fig. 13 is a schematic structural diagram of a user equipment disclosed in an embodiment of the present application;

fig. 14 is a schematic structural diagram of another user equipment disclosed in the embodiment of the present application;

fig. 15 is a schematic structural diagram of a network searching system disclosed in an embodiment of the present application.

Detailed Description

The scheme disclosed by the embodiment of the application is applied to user equipment capable of carrying out communication services, such as a smart phone, a telephone watch and the like. Referring to fig. 1, a schematic diagram of a user equipment includes a Non-access stratum (NAS) and an Access Stratum (AS), where the Non-access stratum is a functional layer between a core network and the user equipment and is capable of supporting signaling and data transmission between the core network and the user equipment, and the access stratum is often referred to AS a portion of a network facing a user connection or access and is used for connecting the user equipment to the network.

In the scheme disclosed by the embodiment of the application, the non-access layer can interact with the storage module of the network access information, so that the network access information is obtained, and the network searching list is generated according to the network access information. And the non-access layer can interact with the access layer, so that the access layer acquires the network searching list, and the access layer can realize network residence according to the network searching list.

In order to clarify the aspects disclosed in the embodiments of the present application, the aspects of the present application are disclosed below by way of respective embodiments.

A first embodiment of the present application discloses a network search list generation method, referring to a workflow diagram shown in fig. 2, the network search list generation method includes the following steps:

step S11, a non-access stratum in User Equipment (UE) acquires network access information of the UE, wherein the network access information includes an equivalent home network (EHPLMN) of the UE and a network type corresponding to the EHPLMN.

The network access information may be pre-stored in a local cache space of the UE, for example, in a non-volatile flash memory space of the UE, or may also be pre-stored in a SIM card of the UE. In addition, the network access information may also be located in a server. That is, the storage module of the network access information may be a local cache space of the UE, a SIM card, and/or a server. When the network access information is located in the server and the UE does not complete network residence, the UE can access the server by connecting wireless network wifi and the like, so that the non-access layer can acquire the network access information.

The network access information comprises an equivalent home network EHPLMN of the UE and a network type corresponding to the EHPLMN. The EHPLMN refers to a list formed by Home networks (Home PLMN, HPLMN) supported by a SIM card in the UE, and the HPLMN supported by the SIM card may be in a form of network code, for example, the HPLMN supported by the SIM card of the operator, china mobile, includes: 46000. 46002 and 46007, HPLMN supported by SIM card of this operator, china unicom includes: 46001. the network types corresponding to the EHPLMN refer to types of networks respectively corresponding to home networks supported by the SIM card in the UE, where the network types may be GSM, TD-SCDMA, TD-LTE, and the like.

If the china mobile only sets the equipment needed by two network types of TD-SCDMA and TD-LTE in a certain area and rents the equipment needed by GSM set in the area in china unicom, in this case, the EHPLMN in the area for the UE using the SIM card of the china mobile includes: 46000. 46002, 46007, and 46001. Moreover, the network types corresponding to 46000, 46002 and 46007 include types of various networks of china mobile, that is, GSM, TD-SCDMA and TD-LTE, and the network type corresponding to 46001 is a network type supported by leased equipment of china communication, that is, GSM.

Step S12, the nas determines, based on the network access information, a target network to be searched in a network searching process when the UE communicates through each network type.

For example, if the EHPLMN in the access information includes: 46000. 46002, 46007 and 46001, and the network types corresponding to 46000, 46002 and 46007 include types of various networks of china mobile, that is, GSM, TD-SCDMA and TD-LTE, and the network type corresponding to 46001 is a network type supported by leased equipment in china communication, that is, GSM, and in this case, when the UE switches to 2G, that is, when the network type of GSM is applied for communication, the target network searched in the network searching process includes 46000, 46002, 46007 and 46001; when the UE switches to 3G, that is, when the TD-SCDMA network type is used for communication, the target networks searched in the network searching process include 46000, 46002 and 46007; when the UE switches to 4G, i.e. communication is performed by using network type TD-LTE, the target networks searched in the network searching process include 46000, 46002 and 46007.

Step S13, the nas generates a network search list including a correspondence between the network type and the target network based on the target network searched by the UE in the network search process.

After the access layer acquires the network searching list, the access layer can determine a corresponding target network according to the corresponding network type during network residence, and perform network searching on the target network.

The embodiment of the application discloses a network searching list generation method, in the method, a non-access layer in UE acquires network access information of the UE, wherein the network access information comprises an equivalent home network EHPLMN of the UE and a network type corresponding to the EHPLMN; then, the non-access layer determines a target network searched in a network searching process when the UE communicates through each network type based on the network access information; and the non-access stratum generates a network searching list containing the corresponding relation between the network type and the target network based on the target network searched by the UE in the network searching process.

In the prior art, if an a operator rents equipment of a B operator, each communication network supported by the a operator and the B operator is set in an equivalent home network EHPLMN of a SIM card. For example, the operator of china mobile supports a 2G GSM communication network, a 3G TD-SCDMA communication network, and a 4G TD-LTE communication network, and the operator of china mobile supports a 2G GSM communication network, a 3G wideband code division multiple access (W-CDMA) communication network, and a 4G frequency division long term evolution (FDD-LTE) communication network, in which case, if china mobile can set only the devices required by the two network types of TD-SCDMA and TD-LTE in a certain area, and china mobile rents the devices required by the GSM set in the area, the EHPLMN of the SIM card of china mobile includes 46000, 46002, 46007, and 46001.

In this case, if the SIM card of the operator a resides in the communication network corresponding to the leased device, after the network switching occurs, because the SIM card resides in the communication network corresponding to the leased device provided by the operator B before the network switching occurs, the SIM card preferentially selects other network standards supported by the operator B during the network searching process, and searches the network standard supported by the operator a after determining that the network residence cannot be implemented in the other network standards supported by the operator B, so as to communicate in the network standard supported by the operator a. Because the process of searching for a network under other network standards supported by the operator B consumes a period of time, the time required for the network searching process is prolonged, the network searching is slow, the network residing speed is further affected, the network residing efficiency is reduced, and the user experience is poor.

For example, if the UE is camped on GSM, and after network handover occurs, the UE is handed over to the 3G network, and when the UE is camped on GSM before, the UE communicates through the apparatus in china unicom, and the EHPLMN of the UE includes communication networks supported by china mobile and china unicom at the same time, then after the UE is handed over to the 3G network, in the network searching process, the UE will first search and attempt to register the 3G network (i.e., 3G network provided by china unicom (china unicom)), but will be denied access by china unicom (china unicom), and after a period of network searching time, it will display that network searching fails. Then, the UE searches for 3G networks (i.e., 46000, 46002, and 46007) provided by china mobile according to the EHPLMN. The process of searching for the 3G network provided by Unicom China can consume a period of time, so that the time required by the whole network searching process is longer, the network residing speed is further slowed down, the network residing efficiency is reduced, and the user experience is influenced.

For example, according to the scheme of the embodiment of the present application, after the network type corresponding to the EHPLMN can be characterized in the network searching list, in this case, after the UE is handed over from 2G to 3G (i.e., the network type of TD-SCDMA application needs to be applied for communication), it may be determined that the target networks searched in the network searching process include 46000, 46002 and 46007. That is, through the network searching list obtained in the embodiment of the present application, the access stratum may directly search 46000, 46002 and 46007, and does not search for the 3G network (i.e. 46001) provided by china unicom, thereby avoiding searching for an unsupported communication network.

In the prior art, EHPLMNs supported by a SIM card are generally listed in an EHPLMN list, and a Forbidden network (FPLMN) of the SIM card may also be listed in an FPLMN list. The respective communication networks listed in the EHPLMN list and the FPLMN list are generally denoted by 3 bytes.

For example, in the prior art, the EHPLMN list may be represented by table 1:

TABLE 1

Bytes	Description	Length
			1to 3	1st PLMN	3bytes
:	:
			22to 24	8th PLMN	3bytes

Where table 1 shows that 1 to 3bytes describe the first communication network in EHPLMN, which occupies 3bytes in length, and 22 to 24 bytes describe the eighth communication network in EHPLMN, which occupies 3bytes in length.

In the embodiment of the present application, two more bytes may be added to the corresponding positions of the communication networks included in the EHPLMN list to indicate network access information. For example, the network access information of the UE may be represented by table 2:

TABLE 2

Wherein, table 2 shows that 1 to 3bytes describe the first communication network (e.g. 46000) in EHPLMN, and the description occupies 3bytes, and 4 to 5 bytes describe the network type (e.g. GSM) corresponding to the communication network, and the description occupies 2 bytes; the 36 to 38 bytes describe the eighth communication network in EHPLMN, which occupies 3bytes, and the 39 to 40 bytes describe the network type corresponding to the communication network, which occupies 2 bytes.

Of course, the network access information may also be represented in other forms, which is not limited in this application embodiment.

Further, in this embodiment of the present application, the non-access stratum acquires network access information of the UE, where the network access information includes one or more of the following options:

The SIM card may be in various forms, for example, the SIM card may be an entity SIM card, and may also be an Embedded SIM card (eSIM), which is not limited in this application.

Further, the network access information may change. For example, if the device lease relationship between operators changes, the network access information changes accordingly. In order to avoid affecting the network searching result of the UE, the network access information may also be updated.

In this case, when the network access information is stored in the storage space of the UE or stored in the SIM card, the method disclosed in the embodiment of the present application further includes:

The non-access layer can access the cloud under the network-resident condition, or the non-access layer can access the cloud in a wireless network connection mode.

In addition, when the network access information is stored in the storage space of the UE, update software may be further provided in the UE, and the update software updates the network access information in the storage space of the UE through the acquired update data packet. The update package may be a software package generated by a manufacturer of the UE for system upgrade.

Further, in the embodiment of the present application, after the non-access stratum acquires the network searching list, the access stratum needs to search for a network according to the network searching list. In this case, after the non-access stratum generates a network searching list including a correspondence between the network type and the target network, the method further includes:

and the non-access stratum transmits the network searching list to an access stratum in the UE.

Or, after the non-access stratum generates a network searching list containing the correspondence between the network type and the target network, the method further includes:

Through the steps, the non-access layer splits the network searching list according to the target network type of the network searching, the split network searching list comprises the target network corresponding to the target network type, and transmits the split network searching list to the access layer, so that the access layer can realize network searching according to the split network searching list.

For example, when the network searching list represents the networks supported by the SIM card, the following are included: 46000. 46002, 46007 and 46001, wherein the network types corresponding to 46000, 46002 and 46007 are GSM, TD-SCDMA and TD-LTE, and when the network type corresponding to 46001 is GSM, it can be determined that the target network corresponding to the network type of GSM includes 46000, 46002, 46007 and 46001, and the target networks corresponding to TD-SCDMA and TD-LTE are 46000, 46002 and 46007. If the target network type of the network searching is TD-SCDMA, the target networks included in the split network searching list include 46000, 46002 and 46007. In this case, the access layer receives the split network searching list and searches the network according to the split network searching list.

In order to elaborate how the non-access stratum determines the target network type of the network search in detail, the application discloses another embodiment, referring to fig. 3, in which the determining, by the non-access stratum, the target network type of the network search in this time includes the following steps:

step S21, when the network searching list is generated this time, that is, the network searching list is generated for the first time after the UE is powered on, the non-access layer obtains the network type of the communication network to which the UE is finally applied in the last power-on process by querying the usage log of the UE.

Step S22, the non-access stratum determines that the network type of the communication network that is applied last is the target network type of the network search last time in the last startup process of the UE.

That is, the target network type of the network search may be determined according to the historical usage of the UE.

For example, if the network searching list generated this time is a network searching list generated for the first time after the UE is turned on, and the network type of the communication network finally applied in the last power-on process of the UE is determined to be TD-SCDMA by querying the use log of the UE, the non-access layer determines that the target network type of the network searching this time is TD-SCDMA. That is, when the network searching list generated this time is generated for the first time after the UE is powered on, the target network type of the network searching this time is determined according to the communication network last applied by the UE in the last power on process.

Or, in another mode, the determining, by the non-access stratum, the target network type of the network search includes: after receiving a first network switching operation, the non-access layer determines a target network type of the current network search based on the first network switching operation.

The first network switching operation may indicate a target network type of the current network search, for example, the first network switching operation is used to enable a display screen of the UE to display multiple network types, and select a certain network type from the multiple network types as the target network type. After receiving a first network switching operation, the non-access layer determines a target network type of the current network search based on the first network switching operation.

In an example, a display interface of a display screen of the UE may be as shown in fig. 4, where a network list is displayed on the display interface, where the network list includes multiple network types, for example, 2G, 3G, and 4G, and when the user performs the first network switching operation, the display screen of the UE may display the interface, and take a network type corresponding to the interface as a target network type according to the network type selected by the user.

For the SIM cards provided by different operators, each network type corresponds to the network type supported by the operator, for example, when the SIM card in the UE is the SIM card provided by a china mobile operator, 2G corresponds to GSM, 3G corresponds to TD-SCDMA, and 4G corresponds to TD-LTE. In this case, when the user selects 3G, the network type TD-SCDMA corresponding to 3G is the target network type.

Further, if the display interface of the display screen of the UE is as shown in fig. 4, in the frame after each network system, information such as the priority of the network system may also be displayed.

During the use process of the UE, the user may perform a network handover operation on the UE, so that the UE performs the network handover, for example, handover TD-SCDMA applied by the UE to TD-LTE. In this case, through the above steps, the non-access stratum can determine the target network type of the current network search according to the accessed network switching operation.

Or, in another mode, referring to the workflow diagram shown in fig. 5, the determining, by the non-access stratum, the target network type of the current network search includes the following steps:

step S31, the non-access stratum acquires the preset priority corresponding to each network type.

Step S32, the non-access layer determines that the network type with the highest priority at present is the target network type of the current network searching;

step S33, when the network searching and network searching fails according to the network type with the highest priority, the non-access stratum sequentially selects other network types as the target network type of the current network searching based on the priorities corresponding to the network types.

In the embodiment of the application, a user can preset the priority corresponding to each network type, and in this case, the non-access stratum determines the target network type according to the set priority. Specifically, the non-access stratum determines that the network type with the highest priority at present is the target network type of the network searching this time, and if the network searching of the access stratum fails under the condition, the non-access stratum selects the network type with the priority next to the highest priority as the target network type of the network searching this time. That is, the scheme selects the target network types in turn according to the preset priorities of the network types.

In addition, in order to meet the diversified demands of users, the priorities corresponding to the network types can be modified. For example, at the beginning of each month, the network traffic of the UE is abundant, and the user attaches more importance to the network speed, in this case, the priority of the network type TD-LTE may be set to be the highest, so that the access network may preferentially search for the network of TD-LTE when searching for the network; in addition, at the end of the month, the network flow of the UE is less, and the user wants to save traffic, in this case, the priority of the network type GSM may be set to be the highest, so that the access network will preferentially search for the network of GSM when searching for the network.

If the display interface of the display screen of the UE is as shown in fig. 4, in the frame after each network type, the priority of the network type may also be displayed, and the user may also modify the information in the frame, so as to modify the priority of each network type. As for the SIM cards provided by different operators, each network type corresponds to the network type supported by the operator, and the priority of each network type can be modified by modifying the priority of each network type.

For example, when the SIM card in the UE is the SIM card provided by the china mobile operator, 2G corresponds to GSM, 3G corresponds to TD-SCDMA, and 4G corresponds to TD-LTE. In this case, when the user modifies the priority of 3G, the priority of TD-SCDMA is modified accordingly.

Further, the non-access stratum may also determine the target network type of the network search based on the application parameters of the UE. In this case, referring to the workflow diagram shown in fig. 6, the determining, by the non-access stratum, the target network type of the current network search includes the following steps:

step S41, after receiving the second network handover operation, the non-access stratum acquiring application parameters of the UE, where the application parameters include: address and/or time.

And the second network switching operation is used for indicating that network switching is required currently so as to enable the non-access stratum to determine the target network type of the network searching.

In the UE, a clock is usually built in, and the non-access stratum can acquire time through the clock built in the UE. In addition, the UE may implement UE Positioning through a wireless network, so that the non-access stratum obtains the address of the UE, for example, the UE may implement Positioning through a Global Positioning System (GPS) by connecting wifi, so that the non-access stratum obtains the address of the UE.

Step S42, the non-access stratum determines the priority of each network type based on the application parameters of the UE and the correspondence between the preset application parameters and the priorities of the network types.

In the embodiment of the application, a corresponding relation between the application parameters and the priorities of the network types is preset, and the corresponding relation can be stored in forms of a table and the like. And according to the requirements of users, the corresponding relation can be modified.

And step S43, the non-access stratum determines that the network type with the highest priority is the target network type of the current network search.

In the embodiment of the application, the non-access stratum acquires application parameters of the UE, determines priorities of various network types based on the application parameters of the UE and a preset corresponding relation between the application parameters and the priorities of the network types, and takes the network type with the highest priority as a target network type of the current network search.

Through the scheme of the embodiment of the application, the non-access layer can determine the priority of each network type based on the application parameters, and further determine the target network type of the network searching. For example, if the user starts from place a to place B every day, the TD-LTE signal strength of place a is stronger, and the GSM signal strength of place B is stronger, the user may set that the TD-LTE priority is the highest when the UE is located in place a, and the GSM priority is the highest when the UE is located in place B. In this case, when the non-access stratum determines that the UE is located at the location a according to the application parameters, it may determine that the network type of TD-LTE is the target network type of the network search; and when the non-access stratum determines that the UE is positioned at the location B according to the application parameters, determining that the network type of the GSM is the target network type of the network searching.

Or, in another mode, referring to the workflow diagram shown in fig. 7, the determining, by the non-access stratum, the target network type of the network search includes the following steps:

step S51, after receiving the third network handover operation, the non-access stratum acquires application parameters of the UE, where the application parameters include: address and/or time.

And the third network switching operation is used for indicating that network switching is required currently so as to enable the non-access stratum to determine the target network type of the current network searching.

In addition, the non-access stratum can acquire time through a clock built in the UE. And the UE can realize the positioning of the UE through a wireless network, so that the non-access layer can acquire the address of the UE, for example, the UE can realize the positioning through connecting wifi and GPS, so that the non-access layer can acquire the address of the UE.

Step S52, when the UE connects to the wireless network, the non-access stratum obtains the signal strength ranking of each network type under the application parameter by accessing the server.

When the UE is connected with the wireless network, the UE can access the server, so that the signal intensity sequence of each network type under the application parameters is obtained by accessing the server. For example, if the application parameter is a location, the signal strength ranking of each network type under the location may be obtained by accessing the server.

Step S53, the non-access stratum determines that the network type with the strongest signal strength is the target network type of the current network search.

By the scheme of the embodiment of the application, the non-access stratum can acquire the signal intensity sequence of each network type of the UE under the current application parameters in a mode of accessing the server through the wireless network, and accordingly, the network type with the strongest signal intensity is determined to be the target network type of the current network searching.

In the network searching list generating method disclosed in the embodiment of the present application, a non-access stratum needs to determine, based on the network access information, a target network to be searched in a network searching process when the UE communicates through each network type. This operation can be achieved in a number of ways.

In one mode, the determining, by the non-access stratum, a target network searched in a network searching process when the UE communicates through each network type based on the network access information includes:

and the non-access layer takes the EHPLMN corresponding to the first network type in the network access information as a target network searched in the network searching process when the UE communicates through the first network type.

The network access information includes the equivalent home network EHPLMN of the UE and the network type corresponding to the EHPLMN, so that the target network searched in the network searching process during communication through each network type can be determined accordingly.

For example, if EHPLMN in the network access information of the UE includes: 46000. 46002, 46007, and 46001, and the network types corresponding to 46000, 46002, and 46007 include types of various networks of china mobile, that is, GSM, TD-SCDMA, and TD-LTE, and the network types corresponding to 46000, 46002, and 46007 are network types supported by leased equipment in china communication, that is, GSM, then the first network type is GSM, when the UE communicates through the first network type, the target networks searched in the network searching process are 46000, 46002, 46007, and 46001, when the first network type is TD-SCDMA, when the UE communicates through the first network type, the target networks searched in the network searching process are 46000, 46002, and 46007, when the first network type is TD-LTE, when the UE communicates through the first network type, the target networks searched in the network searching process are 46000, 46002, and 46007.

Or, in another mode, a forbidden network FPLMN of the UE and a network type corresponding to the FPLMN are also included in the network access information, where the FPLMN and the EHPLMN are usually set in a list. In this case, the non-access stratum determines, based on the network access information, that the UE is to communicate through each network type, and when a target network is searched in a network search process, generally removes a FPLMN portion included in a list where the FPLMN and the EHPLMN are located, then determines a superposed network of the FPLMN and the EHPLMN, and uses the superposed network and the EHPLMN as the target network to be searched in the network search process when the UE is to communicate through each network type.

By the scheme, the superposed network of the FPLMN and the EHPLMN can be used as a target network to be searched in the network searching process.

Correspondingly, referring to a workflow diagram shown in fig. 8, another embodiment of the present disclosure discloses a network searching method, which includes the following steps:

step S61, the access layer in the UE acquires a network search list, where the network search list includes a correspondence between network types and target networks, and the target networks are networks that need to be searched in the network search process when the UE communicates through each network type.

The access layer can obtain a network searching list generated by the non-access layer through interaction between the non-access layer and the access layer.

The network searching list comprises a corresponding relation between network types and target networks, and the target networks are networks which need to be searched in the network searching process when the UE communicates through each network type. For example, when the UE communicates through a network type of GSM, the target networks searched for in the network searching process include 46000, 46002, 46007 and 46001, when the UE communicates through a network type of TD-SCDMA, the target networks searched for in the network searching process include 46000, 46002 and 46007, when the UE communicates through a network type of TD-LTE, the target networks searched for in the network searching process include 46000, 46002 and 46007, and the network searching list includes the correspondence between 46000, 46002, 46007 and 46001 and GSM, the correspondence between 46000, 46002 and 46007 and TD-SCDMA, and the correspondence between 46000, 46002 and 46007 and TD-LTE.

And step S62, the access layer determines the target network type of the network searching.

The method for determining the target network type of the current network search by the access layer can be the same as the method for determining the target network type by the non-access layer.

Specifically, when the access layer acquires the network search list for the first time after the UE is powered on, the access layer may acquire the network type of the communication network that is finally applied during the last power-on process of the UE by querying the usage log of the UE, and set the network type of the communication network that is finally applied during the last power-on process of the UE as the target network type of the network search.

That is, the target network type of the network search may be determined according to the historical usage of the UE. For example, if the network searching list generated this time is a network searching list generated for the first time after the UE is turned on, and the network type of the communication network finally applied in the last power-on process of the UE is determined to be TD-SCDMA by querying the use log of the UE, the non-access layer determines that the target network type of the network searching this time is TD-SCDMA. That is, when the network searching list generated this time is generated for the first time after the UE is powered on, the target network type of the network searching this time is determined according to the communication network last applied by the UE in the last power on process.

Or, the access layer may determine the target network type of the network search according to the received network switching operation.

The network switching operation received by the access layer may indicate a target network type of the network search, for example, the network switching operation is used to enable a display screen of the UE to display multiple network types, and select a certain network type as the target network type. After receiving the network switching operation, the access layer determines the target network type of the network searching based on the network switching operation.

Or, the access layer acquires the preset priority corresponding to each network type, then determines the network type with the highest priority at present as the target network type of the current network search, and when the network search is failed through the network type with the highest priority, the access layer sequentially selects other network types as the target network type of the current network search based on the priority corresponding to each network type.

In the method, a user can preset the priority corresponding to each network type, and under the condition, the non-access layer determines the target network type according to the set priority. Specifically, the non-access stratum determines that the network type with the highest priority at present is the target network type of the network searching this time, and if the network searching of the access stratum fails under the condition, the non-access stratum selects the network type with the priority next to the highest priority as the target network type of the network searching this time. That is, the scheme selects the target network types in turn according to the preset priorities of the network types.

Or after receiving a network handover operation, an access stratum acquires application parameters of the UE, where the application parameters include: address and/or time; then, the access layer determines the priority of each network type based on the application parameters of the UE and the corresponding relation between the preset application parameters and the priority of the network type; and finally, the access layer determines the network type with the highest priority as the target network type of the network searching.

In the method, an access layer acquires application parameters of UE, determines the priority of each network type based on the application parameters of the UE and the corresponding relation between the preset application parameters and the priorities of the network types, and takes the network type with the highest priority as the target network type of the current network searching.

Or after receiving a network handover operation, an access stratum acquires application parameters of the UE, where the application parameters include: address and/or time; when the UE is connected with a wireless network, the access layer acquires the signal intensity sequence of each network type under the application parameters by accessing a server; and the access layer determines the network type with the strongest signal intensity as the target network type of the network searching.

In the method, an access layer can acquire the signal intensity sequence of each network type of the UE under the current application parameters in a mode of accessing a server through a wireless network, and accordingly, the network type with the strongest signal intensity is determined to be the target network type of the current network searching.

Of course, the access stratum may also determine the target network type of the network search in other manners, which is not limited in this embodiment of the application.

And step S63, the access layer determines the target network of the current network search and executes the network search operation based on the target network type and the network search list.

According to the scheme disclosed by the embodiment of the application, the network searching list acquired by the access layer comprises the corresponding relation between the network types and the target network, the target network is a network which needs to be searched in the network searching process when the UE communicates through each network type, the access layer can determine the target network type of the current network searching, and then the target network of the current network searching is determined and the network searching operation is executed based on the target network type and the network searching list.

Under the condition, when the access layer searches the network according to the network searching list, the access layer can determine the target network to be searched according to the network type during network searching, thereby avoiding searching unsupported communication networks, reducing the time required by the network searching process, further accelerating the network residing speed, improving the network residing efficiency and improving the user experience.

Further, in this embodiment of the present application, after the access stratum determines and searches for a target network of a current network search, the method further includes:

For example, m may be set to 5, and if 5 consecutive network searching operations fail, the access stratum may redetermine the target network, so as to perform network searching through the redetermined target network.

For example, if the access layer determines that the target network type is TD-LTE, but the network searching operation for m times on each network corresponding to TD-LTE fails, the target network may be determined to be TD-SCDMA again, and the target network corresponding to TD-SCDMA may be determined through the network searching list, and corresponding network searching operation may be performed.

Another embodiment of the present application discloses a network searching method, which is shown in a workflow diagram shown in fig. 9, and the network searching method disclosed in the embodiment of the present application includes the following steps:

step S71, the access layer in the UE acquires a network searching list, and the network searching list contains the target network corresponding to the target network type of the current network searching.

In this case, the non-access stratum determines the target network type of the network search and acquires a split network search list, where the split network search list includes a target network corresponding to the target network type. And the access layer acquires the split network searching list through the interaction with the non-access layer.

For example, if the non-access layer determines that the target network type of the network search is TD-SCDMA, the network search list acquired by the access layer includes the target network corresponding to the network type TD-SCDMA.

And step S72, the access layer executes network searching operation based on the network searching list.

Further, in this embodiment of the application, after the access stratum performs a network searching operation based on the network searching list, the method further includes:

Where n is a preset positive integer, for example, n may be set to 5.

For example, the target network type of the current network search is TD-LTE, but the network search operations performed on each network corresponding to TD-LTE for n times all fail, which indicates that, under the current situation, the network search performed on the network search list acquired in step S71 cannot be successful, and the access layer may reacquire the network search list through interaction with the non-access layer, for example, acquire a network search list including each network corresponding to TD-SCDMA, and perform the network search operation anew.

By the scheme, the access layer can acquire the network searching list again and search the network according to the network searching list acquired again.

Accordingly, in another embodiment of the present application, a network searching list generating apparatus is disclosed, wherein the network searching list generating apparatus is disposed in a non-access stratum of a UE. Referring to the schematic structural diagram shown in fig. 10, the network searching list generating apparatus includes: a first memory 110 and a first processor 120.

Wherein said first memory 110 has stored therein a computer program operable on said first processor.

The first processor 120, when executing the computer program, performs the following operations:

Further, in the network searching list generating apparatus disclosed in the embodiment of the present application, the first processor obtains network access information of the UE, where the network access information includes one or more of the following options:

In this case, when the network access information is stored in the storage space of the UE or in the SIM card, the first processor is further configured to implement the following operations when executing the computer program:

Further, after generating a network searching list containing the corresponding relation between the network type and the target network,

alternatively, the first and second electrodes may be,

In this case, the non-access layer splits the network searching list according to the target network type of the network searching, the split network searching list includes the target network corresponding to the target network type, and transmits the split network searching list to the access layer, so that the access layer can realize network searching according to the split network searching list.

The determining, by the first processor, a target network type of the current network search includes:

alternatively, the first and second electrodes may be,

Further, the target network type of the network search may be determined based on the application parameters of the UE. In this case, the determining, by the first processor, the target network type of the current network search includes:

and the first processor determines the network type with the highest priority as the target network type of the current network search.

Or, the determining, by the first processor, a target network type of the current network search includes:

Accordingly, an embodiment of the present application discloses a network searching apparatus, which is generally disposed in an access stratum of a UE, and referring to a schematic structural diagram shown in fig. 11, the network searching apparatus includes: a second memory 210 and a second processor 220.

Wherein the second memory 210 has stored therein a computer program operable on the second processor;

the second processor 220, when executing the computer program, implements the following operations:

determining the target network type of the network searching;

Further, in the network searching device disclosed in the embodiment of the present application, after the second processor determines and searches for a target network of a current network search, the second processor is further configured to, when m network search operations are performed on the target network of the current network search and each network search operation fails, re-determine a target network type of the current network search, where m is a preset positive integer;

Accordingly, an embodiment of the present application discloses a network searching apparatus, which is generally disposed in an access stratum of a UE, and referring to a schematic structural diagram shown in fig. 12, the network searching apparatus includes: a third memory 310 and a third processor 320.

Wherein the third memory 310 has stored therein a computer program operable on the third processor;

In this case, the non-access stratum determines the target network type of the network search and acquires a split network search list, where the split network search list includes a target network corresponding to the target network type. And the access layer acquires a split network searching list through interaction with the non-access layer, wherein the split network searching list comprises the target network corresponding to the type of the target network of the network searching.

Further, in the network searching apparatus disclosed in the embodiment of the present application, after the network searching operation is performed based on the network searching list, the third processor is further configured to, when the network searching operation is performed n times and each network searching operation fails, reacquire the network searching list, where the reacquired network searching list includes a target network corresponding to the redetermined target network type, n is a preset positive integer, and the third processor performs the network searching operation based on the reacquired network searching list.

Accordingly, in another embodiment of the present application, the present application further includes a non-access stratum, including:

a first transceiver, configured to acquire network access information of the UE, where the network access information includes an EHPLMN (equivalent home network) of the UE and a network type corresponding to the EHPLMN;

Accordingly, in another embodiment of the present application, the present application further includes an access stratum, including:

the second transceiver is used for acquiring a network searching list, the network searching list comprises a corresponding relation between network types and a target network, and the target network is a network which needs to be searched in the network searching process when the UE communicates through each network type;

In another embodiment of the present application, a user equipment is also disclosed, where the user equipment may include a terminal device capable of performing communication services, such as a mobile phone and a telephone watch. Referring to the schematic structural diagram shown in fig. 13, the ue includes: memory, a processor 200, and a computer program stored on the memory and executable on the processor. Further, a transceiver 100 may be included, which may include a random access memory 300, a read only memory 400, and a bus 500. The processor 200 is coupled to the transceiver 100, the random access memory 300 and the read only memory 400 through the bus 500, and when the processor executes the computer program, the processor implements part or all of the steps of the network searching list generating method or the network searching method disclosed in the above embodiments of the present application, that is, implements part or all of the steps of the network searching list generating method shown in fig. 2 to 6, or implements the network searching method shown in fig. 7, or implements the network searching method shown in fig. 8.

When the user equipment needs to be operated, the user equipment is guided to enter a normal operation state by starting a basic input and output system solidified in a memory or a bootloader guiding system in an embedded system. After the user equipment enters a normal operation state, an application program and an operating system are operated in the memory, so that the processor executes part or all of the steps of the network searching list generating method shown in fig. 2 to 6, or executes the network searching method shown in fig. 7, or executes the network searching method shown in fig. 8.

The ue according to the embodiment of the present invention may correspond to the ue in the embodiments corresponding to fig. 2 to fig. 6, and the ue may implement the functions of the ue and/or various steps and methods implemented by the ue in the embodiments corresponding to fig. 2 to fig. 6. For brevity, no further description is provided herein.

Alternatively, the ue according to the embodiment of the present invention may correspond to the ue in the embodiment corresponding to fig. 7, and the ue may implement the functions of the ue in the embodiment corresponding to fig. 7 and/or various steps and methods implemented by the ue. For brevity, no further description is provided herein.

Alternatively, the ue according to the embodiment of the present invention may correspond to the ue in the embodiment corresponding to fig. 8, and the ue may implement the functions of the ue in the embodiment corresponding to fig. 8 and/or various steps and methods implemented by the ue. For brevity, no further description is provided herein.

The storage medium in any device may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).

In addition, the processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof. The memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a Hard Disk Drive (HDD), or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.

It should be noted that, this embodiment may also be implemented based on a Network device implemented by combining a general physical server with a Network Function Virtualization (NFV) technology, where the Network device is a virtual Network device (e.g., a virtual host, a virtual router, or a virtual switch). The Virtual network device may be a Virtual Machine (VM) deployed on a hardware device (e.g., a physical server). A virtual machine refers to a complete computer system with complete hardware system functionality, which is emulated by software, running in a completely isolated environment. Through reading the application, a person skilled in the art can virtually generate a plurality of network devices with the above functions on the general physical server. And will not be described in detail herein.

The embodiment of the invention relates to a network selection method applied to user equipment, wherein the user equipment can comprise terminal equipment capable of carrying out communication services, such as a mobile phone, a telephone watch and the like.

Taking user equipment as an example of a mobile phone, fig. 14 is a block diagram illustrating a part of a structure of a mobile phone 1400 according to an embodiment of the present invention. Referring to fig. 14, cell phone 1400 includes components such as RF (Radio Frequency) circuitry 1410, memory 1420, other input devices 1430, display screen 1440, sensors 1450, audio circuitry 1460, I/O subsystem 1470, processor 1480, and power supply 1490. Those skilled in the art will appreciate that the handset configuration shown in fig. 14 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, some components may be separated, or a different arrangement of components. Those skilled in the art will appreciate that the display 1440 is part of a User Interface (UI) and that the cell phone 1400 may include fewer or more User interfaces than shown.

The following describes the components of the mobile phone 1400 in detail with reference to fig. 14:

the RF circuit 1410 may be used for receiving and transmitting signals during a message transmission or call, and in particular, may receive downlink information from a base station and then process the received downlink information to the processor 1480; in addition, the designed uplink data can also be sent to the base station. Typically, the RF circuit includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, an LNA (Low Noise Amplifier), a duplexer, and the like. In addition, the RF circuitry 1410 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), etc.

The memory 1420 can be used for storing software programs and modules, and the processor 1480 executes the software programs and modules stored in the memory 1420 to perform various functional applications and data processing of the cellular phone 1400. The memory 1420 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (e.g., a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone 1400, and the like. Further, memory 1420 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

Other input devices 1430 may be used to receive entered numeric or character information and generate key signal inputs relating to user settings and function controls of cell phone 1400. In particular, other input devices 1430 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, a light mouse (a light mouse is a touch-sensitive surface that does not display visual output, or is an extension of a touch-sensitive surface formed by a touch screen), and the like. Other input devices 1430 are connected to other input device controllers 1471 of the I/O subsystem 1470 and interact with the processor 1480 via signals under the control of the other device input controllers 1471.

The display screen 1440 may be used to display information entered by or provided to the user as well as various menus of the cell phone 1400 and may also accept user input. A particular display screen 1440 can include a display panel 1441, and a touch panel 1442. The Display panel 1441 may be configured by an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), and the like. Touch pad 1442, also referred to as a touch screen, a touch-sensitive screen, etc., can collect contact or non-contact operations (e.g., operations performed by a user on or near touch pad 1442 using any suitable object or accessory such as a finger, a stylus, etc., and can also include somatosensory operations; the operations include single-point control operations, multi-point control operations, etc.) and drive corresponding connection devices according to a preset program. Alternatively, the touch panel 1442 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction and gesture of a user, detects signals brought by touch operation and transmits the signals to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into information that can be processed by the processor, and sends the information to the processor 1480, where the touch controller can receive and execute commands from the processor 1480. In addition, the touch panel 1442 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave, and the touch panel 1442 may also be implemented by any technology developed in the future. Further, touch pad 1442 may overlay display panel 1441 such that a user may operate on or near touch pad 1442 overlaid on display panel 1441 in accordance with content displayed on display panel 1441 (including, but not limited to, a soft keyboard, a virtual mouse, virtual keys, icons, etc.), touch pad 1442, upon detecting an operation on or near touch pad 1442, communicating via I/O subsystem 1470 to processor 1480 for determining user input, and processor 1480 then providing corresponding visual output on display panel 1441 via I/O subsystem 1470 in accordance with the user input. Although in fig. 12, the touch panel 1442 and the display panel 1441 are two separate components for implementing the input and output functions of the mobile phone 1400, in some embodiments, the touch panel 1442 and the display panel 1441 may be integrated for implementing the input and output functions of the mobile phone 1400.

Cell phone 1400 can also include at least one sensor 1450, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 1441 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 1441 and/or the backlight when the mobile phone 1400 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone 1400, further description is omitted here.

The audio circuit 1460, speaker 1461, and microphone 1462 may provide an audio interface between a user and the handset 1400. The audio circuit 1460 can transmit the received audio data converted signal to the loudspeaker 1461, and the loudspeaker 1461 converts the signal into a sound signal and outputs the sound signal; on the other hand, the microphone 1462 converts collected sound signals into signals that are received by the audio circuit 1460, converted to audio data, and output the audio data to the RF circuit 1408 for transmission to, for example, another cell phone, or output the audio data to the memory 1420 for further processing.

The I/O subsystem 1470 may control input and output of external devices, including other devices, input controllers 1471, sensor controllers 1472, and display controllers 1473. Optionally, one or more other input control device controllers 1471 receive signals from other input devices 1430 and/or send signals to other input devices 1430, and other input devices 1430 may include physical buttons (push buttons, rocker buttons, etc.), dials, slide switches, joysticks, click wheels, a light mouse (a light mouse is a touch-sensitive surface that does not display visual output, or is an extension of a touch-sensitive surface formed by a touch screen). It is noted that other input control device controllers 1471 may be connected to any one or more of the devices described above. A display controller 1473 in the I/O subsystem 1470 receives signals from the display screen 1440 and/or transmits signals to the display screen 1440. After the display screen 1440 detects user input, the display controller 1473 converts the detected user input into interaction with user interface objects displayed on the display screen 1440, i.e., human-computer interaction is achieved. The sensor controller 1472 may receive signals from the one or more sensors 1450 and/or send signals to the one or more sensors 1450.

The processor 1480, which is the control center of the mobile phone 1400, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile phone 1400 and processes data by operating or executing software programs and/or modules stored in the memory 1420 and calling data stored in the memory 1420, thereby performing overall monitoring of the mobile phone. Alternatively, the processor 1480 may include one or more processing units; preferably, the processor 1480 may integrate an application processor, which handles primarily operating systems, user interfaces, and applications, among others, with a modem processor, which handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 1480.

When the processor 1480 integrates an application processor and a modem processor, the modem processor may implement the functions of the embodiments corresponding to fig. 2 to 6, or fig. 7, or fig. 8 and/or perform various steps and methods of the corresponding embodiments, and report an instruction to the application processor.

The handset 1400 also includes a power supply 1490 (e.g., a battery) that powers the various components, and preferably, the power supply is logically coupled to the processor 1480 via a power management system that manages charging, discharging, and power consumption.

Although not shown, the mobile phone 1400 may further include a camera, a bluetooth module, etc., which are not described herein.

Accordingly, in another embodiment of the present application, a network searching system is disclosed, referring to the schematic structural diagram shown in fig. 15, which includes a network searching list generating device that performs part or all of the steps of the network searching list generating method shown in fig. 2 to 6, and a network searching device that performs the network searching method shown in fig. 7.

Alternatively, the network searching system includes a network searching list generating device that performs part or all of the steps of the network searching list generating method shown in fig. 2 to 6, and a network searching device that performs the network searching method shown in fig. 8.

According to the scheme disclosed by the embodiment of the application, the network searching list generated by the network searching list generating device comprises the corresponding relation between the network type and the target network, and under the condition, when the network searching device searches the network according to the network searching list, the target network to be searched can be determined according to the network type during network searching, so that the searching of unsupported communication networks is avoided, the time required by the network searching process is reduced, the network residing speed is further accelerated, the network residing efficiency is improved, and the user experience is improved.

In a specific implementation, an embodiment of the present application further provides a computer-readable medium, where the computer-readable medium includes instructions, and when the computer-readable medium is run on a computer, the computer implements part or all of the steps of the network searching list generating method provided in fig. 2 to 6. The storage medium in any device may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like.

In a specific implementation manner, an embodiment of the present application further provides a computer-readable medium, where the computer-readable medium includes instructions, which, when executed on a computer, cause the computer to implement some or all of the steps of the network searching method provided in fig. 7. The storage medium in any device may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like.

In a specific implementation manner, an embodiment of the present application further provides a computer-readable medium, where the computer-readable medium includes instructions, which, when executed on a computer, cause the computer to implement some or all of the steps of the network searching method provided in fig. 8. The storage medium in any device may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like.

Those of skill in the art will further appreciate that the various illustrative logical blocks and steps (step) set forth in the embodiments of the present application may be implemented in electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

The various illustrative logical units and circuits described in this application may be implemented or operated upon by design of a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in the embodiments herein may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software cells may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may be located in a UE. In the alternative, the processor and the storage medium may reside in different components in the UE.

It should be understood that, in the various embodiments of the present application, the size of the serial number of each process does not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

All parts of the specification are described in a progressive mode, the same and similar parts of all embodiments can be referred to each other, and each embodiment is mainly introduced to be different from other embodiments. In particular, as to the apparatus and system embodiments, since they are substantially similar to the method embodiments, the description is relatively simple and reference may be made to the description of the method embodiments in relevant places.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.

The same and similar parts in the various embodiments in this specification may be referred to each other. Especially, for the … … embodiment, since it is basically similar to the method embodiment, the description is simple, and the relevant points can be referred to the description in the method embodiment.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention.

Claims

1. A method for generating a network searching list is characterized by comprising the following steps:

a non-access layer in User Equipment (UE) acquires network access information of the UE, wherein the network access information comprises an equivalent home network (EHPLMN) of the UE and network types corresponding to the EHPLMN, and the network types corresponding to the EHPLMN are the types of networks respectively corresponding to home networks supported by a Subscriber Identity Module (SIM) card in the UE;

the non-access stratum determines a target network searched in a network searching process when the UE communicates through each network type based on the network access information, wherein the target network is a Public Land Mobile Network (PLMN) needing to be searched;

the non-access stratum generates a network searching list containing the corresponding relation between the network type and a target network based on the target network searched by the UE in the network searching process;

the non-access stratum acquires network access information of the UE, and comprises one or more of the following options:

2. The network searching list generating method according to claim 1, wherein when the network access information is stored in a storage space of the UE or in the SIM card, the method further comprises:

3. The method according to claim 1, wherein after the non-access stratum generates the network search list including the correspondence between the network type and the target network, the method further comprises:

alternatively, the first and second electrodes may be,

4. The method according to claim 3, wherein the determining, by the non-access stratum, the target network type of the current network search includes:

alternatively, the first and second electrodes may be,

5. The method according to claim 3, wherein the determining, by the non-access stratum, the target network type of the current network search includes:

alternatively, the first and second electrodes may be,

6. A network searching method is characterized by comprising the following steps:

an access layer in User Equipment (UE) acquires a network searching list, wherein the network searching list comprises a target network corresponding to a target network type of the network searching, the target network type is a network type corresponding to an equivalent home network (EHPLMN) of the UE, the network types are network types respectively corresponding to home networks supported by a Subscriber Identity Module (SIM) card in the UE, and the target network is a Public Land Mobile Network (PLMN) required to be searched in the network searching process when the UE communicates through each network type;

the access layer executes network searching operation based on the network searching list;

the network searching list is determined by a non-access layer in the UE according to network access information of the UE;

7. The network searching method according to claim 6, after the access stratum performs a network searching operation based on the network searching list, further comprising:

8. A network searching list generating apparatus, comprising:

a first memory and a first processor;

acquiring network access information of User Equipment (UE), wherein the network access information comprises an equivalent home network (EHPLMN) of the UE and network types corresponding to the EHPLMN, and the network types corresponding to the EHPLMN are types of networks respectively corresponding to home networks supported by a Subscriber Identity Module (SIM) card in the UE;

determining a target network searched in a network searching process when the UE communicates through each network type based on the network access information, wherein the target network is a Public Land Mobile Network (PLMN) needing to be searched;

generating a network searching list containing the corresponding relation between the network type and the target network based on the target network searched by the UE in the network searching process;

the first processor acquires network access information of the UE, wherein the network access information comprises one or more of the following options:

9. The network searching list generating apparatus of claim 8, wherein when the network access information is stored in a memory space of the UE or in the SIM card,

10. The device according to claim 8, wherein after generating the search list containing the correspondence between the network type and the target network,

alternatively, the first and second electrodes may be,

11. The device according to claim 10, wherein the first processor determines the target network type of the current network search, and includes:

alternatively, the first and second electrodes may be,

12. The device according to claim 10, wherein the first processor determines the target network type of the current network search, and includes:

alternatively, the first and second electrodes may be,

13. A network searching device is characterized by comprising:

a third memory and a third processor;

acquiring a network searching list, wherein the network searching list comprises a target network corresponding to a target network type of a network to be searched, the target network type is a network type corresponding to an equivalent home network EHPLMN of the UE, the network types are network types respectively corresponding to home networks supported by a Subscriber Identity Module (SIM) card in the UE, and the target network is a Public Land Mobile Network (PLMN) required to be searched in a network searching process when the UE communicates through each network type;

executing network searching operation based on the network searching list;

14. The web searching apparatus according to claim 13,

after the network searching operation is executed based on the network searching list, the third processor is further configured to, when the network searching operation is executed n times and each network searching operation fails, reacquire the network searching list, where the reacquired network searching list includes a target network corresponding to the redetermined target network type, n is a preset positive integer, and the third processor executes the network searching operation based on the reacquired network searching list.

15. A non-access stratum, comprising:

the first transceiver is used for acquiring network access information of User Equipment (UE), wherein the network access information comprises an equivalent home network (EHPLMN) of the UE and network types corresponding to the EHPLMN, and the network types corresponding to the EHPLMN are types of networks respectively corresponding to home networks supported by a Subscriber Identity Module (SIM) card in the UE;

a first processor, configured to determine, based on the network access information, a target network searched in a network searching process when the UE communicates through each network type, and generate a network searching list including a correspondence between the network type and the target network based on the target network searched in the network searching process by the UE, where the target network is a public land mobile network PLMN that needs to be searched;

the first transceiver acquires network access information of the UE, wherein the network access information comprises one or more of the following options:

reading a storage space of the UE, and acquiring network access information pre-stored in the storage space;

reading a Subscriber Identity Module (SIM) card in the UE, and acquiring network access information pre-stored in the SIM card;

and accessing the cloud terminal through the wireless network to acquire network access information prestored in the cloud terminal.

16. An access stratum, comprising:

a third transceiver, configured to obtain a network search list, where the network search list includes a target network corresponding to a target network type of a current network search, where the target network type is a network type corresponding to an EHPLMN (equivalent home network of the UE), the network types are types of networks respectively corresponding to home networks supported by a SIM card in the UE, and the target network is a public land mobile network PLMN that needs to be searched in a network search process when the UE communicates through each network type;

the third processor is used for executing network searching operation based on the network searching list;

17. A computer-readable medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 5.

18. A computer-readable medium comprising instructions which, when executed on a computer, cause the computer to perform the method of claim 6 or 7.

19. A network searching system is characterized in that,

the network searching system comprises a network searching list generating device according to any one of claims 8 to 12 and a network searching device according to claim 13 or claim 14.