CN110710266A

CN110710266A - Method and device for terminal to select network, computer equipment and storage medium

Info

Publication number: CN110710266A
Application number: CN201880037420.3A
Authority: CN
Inventors: 唐海
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-01-12
Filing date: 2018-03-15
Publication date: 2020-01-17
Also published as: WO2019136685A1; WO2019136821A1

Abstract

The invention discloses a method, a device, computer equipment and a storage medium for terminal network selection, wherein the terminal can send fall back capability indication information to a network side in the registration process, or send the information of the mode to the network side and acquire the indication information returned by the network side, wherein the indication information at least comprises the information whether the network side supports voice service, and then network selection can be carried out according to the indication information and the like, thereby ensuring the normal operation of the voice service as much as possible.

Description

Method and device for terminal to select network, computer equipment and storage medium

The application claims the priority of the PCT patent application with the international application date of 2018, 1 month and 12 months, the international application number of PCT/CN2018/072382 and the invention name of 'method, device, computer equipment and storage medium for network selection by a terminal'.

Technical Field

The present invention relates to network technologies, and in particular, to a method and an apparatus for selecting a network by a terminal, a computer device, and a storage medium.

Background

When a terminal (UE) is attached to a 5G network, if a voice service needs to be executed, the UE may fall back to a 4G network by executing a Fallback (Fallback) procedure.

Fig. 1 is a schematic diagram of a conventional fallback process. As shown in fig. 1, when the condition 1a or 1b is satisfied, that is, when the terminal receives a voice call or needs to initiate a voice call, it may fall back to the 4G network by sending a Service Request (Service Request) message.

However, the fallback capability of the terminal is optional, that is, some terminals may support the fallback capability, and some terminals may not support the fallback capability, so that when the terminal does not support the fallback capability, if the network side does not support the 5G Voice service (Voice over 5G) and the network side does not support the active triggered fallback capability, the terminal attached to the 5G network may not execute the Voice service. There is no effective solution to this problem in the prior art.

Disclosure of Invention

In view of this, the present invention provides a method, an apparatus, a computer device and a storage medium for a terminal to perform network selection, which can ensure normal operation of a voice service as much as possible.

The specific technical scheme is as follows:

a method for a terminal to select a network includes:

the method comprises the steps that in the process of registering a terminal to a network side, the terminal sends fallback capability indication information of the terminal to the network side;

the terminal acquires indication information returned by the network side, wherein the indication information at least comprises information whether the network side supports voice service, and network selection is carried out according to the indication information.

A method for a terminal to select a network includes:

the method comprises the steps that a terminal sends mode information of the terminal to a network side in the process of registering to the network side;

A method for a terminal to select a network includes:

in the registration process, a network side acquires fallback capability indication information sent by a terminal;

the network side returns indication information to the terminal, wherein the indication information at least comprises information whether the network side supports voice service, so that the terminal can select the network according to the indication information.

A method for a terminal to select a network includes:

in the registration process, a network side acquires mode information sent by a terminal;

and the network side returns indication information to the terminal, wherein the indication information at least comprises information whether the network side supports the voice service, so that the terminal can select the network according to the indication information.

A terminal device, comprising: a first sending unit and a first selecting unit;

the first sending unit is used for sending the fallback capability indication information of the terminal to the network side in the process of registering to the network side;

the first selection unit is configured to acquire indication information returned by a network side, where the indication information at least includes information about whether the network side supports a voice service, and perform network selection according to the indication information.

A terminal device, comprising: a second transmitting unit and a second selecting unit;

the second sending unit is used for sending the mode information of the terminal to the network side in the process of registering the terminal to the network side;

the second selecting unit is configured to obtain indication information returned by the network side, where the indication information at least includes information about whether the network side supports a voice service, and perform network selection according to the indication information.

A network-side device, comprising: the device comprises a first acquisition unit and a first indication unit;

the first obtaining unit is used for obtaining the fallback capability indication information sent by the terminal in the registration process;

the first indication unit is configured to return indication information to the terminal, where the indication information at least includes information about whether a network side supports a voice service, so that the terminal performs network selection according to the indication information.

A network-side device, comprising: a second acquisition unit and a second indication unit;

the second obtaining unit is used for obtaining the mode information sent by the terminal in the registration process;

the second indicating unit is configured to return indication information to the terminal, where the indication information at least includes information about whether a network side supports a voice service, so that the terminal performs network selection according to the indication information.

A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method as described above when executing the program.

A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method as set forth above.

Based on the above description, it can be seen that, by adopting the scheme of the present invention, the terminal can send the fallback capability indication information to the network side in the registration process, or send the mode information to the network side, and obtain the indication information returned by the network side, wherein the indication information at least includes information whether the network side supports the voice service, and then network selection can be performed according to the indication information, etc., thereby ensuring normal operation of the voice service as much as possible.

Drawings

Fig. 1 is a schematic diagram of a conventional fallback process.

Fig. 2 is a flowchart of a first embodiment of a method for selecting a network by a terminal according to the present invention.

Fig. 3 is a flowchart of a second embodiment of a method for selecting a network by a terminal according to the present invention.

Fig. 4 is a flowchart of a method for selecting a network by a terminal according to a third embodiment of the present invention.

Fig. 5 is a flowchart of a fourth embodiment of a method for selecting a network by a terminal according to the present invention.

Fig. 6 is a schematic structural diagram of a first embodiment of the terminal device according to the present invention.

Fig. 7 is a schematic structural diagram of a second embodiment of the terminal device according to the present invention.

Fig. 8 is a schematic structural diagram of a first embodiment of a network device according to the present invention.

Fig. 9 is a schematic structural diagram of a second embodiment of a network device according to the present invention.

FIG. 10 illustrates a block diagram of an exemplary computer system/server 12 suitable for use in implementing embodiments of the present invention.

Detailed Description

In order to make the technical solution of the present invention clearer and more obvious, the solution of the present invention is further described below by referring to the drawings and examples.

It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 2 is a flowchart of a first embodiment of a method for selecting a network by a terminal according to the present invention. As shown in fig. 2, the following detailed implementation is included.

In 201, the terminal sends the fallback capability indication information of the terminal to the network side during the registration process with the network side.

In 202, the terminal obtains the indication information returned by the network side, wherein the indication information at least includes information whether the network side supports the voice service, and performs network selection according to the indication information.

In the process of registering the terminal to the network side, the terminal may carry fallback capability indication information of the terminal in the sent registration request, that is, tell the network side whether the terminal supports the fallback capability, where a specific format of the fallback capability indication information is not limited.

After obtaining the indication information of the fallback capability of the terminal, the network side may return corresponding indication information to the terminal according to whether the network side supports voice services, and the like, where the indication information may be carried in a registration reply message returned to the terminal by the network side.

The terminal acquires the indication information returned by the network side and can select the network by combining the acquired indication information.

The specific implementation can be as follows:

1) if the terminal does not support the fallback capability and the network side does not support the voice service, the terminal acquires indication information which is returned by the network side and does not support the voice service; if the terminal is in a Voice-centric (Voice centric) mode, the terminal is attached to a second network through domain selection, and the second network supports Voice services; if the terminal is in a Data centric (Data centric) mode, the terminal remains in the first network where it is currently located.

For example, the first network is a 5G network and the second network is a 4G network.

After the network side acquires the indication information of the fallback capability of the terminal, if it is determined that the terminal does not support the fallback capability and the network side does not support the Voice service, the indication information indicating that the Voice over PS Session is not supported may be carried in the registration reply message returned to the terminal.

After the terminal acquires the indication information of the network side, different operations can be executed based on different modes of the terminal. For example, if the terminal is in the voice-centric mode, it may attach to the 4G network through domain selection, and then may directly execute in the 4G network when it needs to execute the voice service, and if the terminal is in the data-centric mode, it may still remain in the current 5G network, and perform the subsequent processing according to the existing manner, and will not select to other networks through domain selection.

2) If the terminal supports the fallback capability and the network side does not support the voice service, the terminal acquires indication information which is returned by the network side and does not support the voice service and fallback indication information; the terminal is still kept in the first network where the terminal is currently located, and when the terminal needs to execute the voice service, the terminal falls back to the second network, and the second network supports the voice service.

After the network side acquires the indication information of the fallback capability of the terminal, if it is determined that the terminal supports the fallback capability and the network side does not support the Voice service, the registration reply message returned to the terminal may carry indication information indicating that the terminal does not support Voice over PS Session, and may carry the fallback indication information at the same time, so that the terminal may execute the fallback process when the Voice service needs to be executed.

After acquiring the indication information of the network side, the terminal can still be maintained in the current 5G network, and then falls back to the 4G network when the voice service needs to be executed.

3) If the network side supports the voice service, the terminal acquires indication information which is returned by the network side and supports the voice service; the terminal is still kept in the first network where the terminal is currently located, and when the voice service needs to be executed, the voice service is executed in the first network.

After the network side acquires the indication information of the fallback capability of the terminal, no matter whether the terminal supports the fallback capability or not, if the network side supports the Voice service, the indication information indicating that the Voice over PS Session is supported can be carried in the registration reply message returned to the terminal.

After acquiring the indication information of the network side, the terminal can still be maintained in the current 5G network, and can be directly executed on the 5G network when the voice service needs to be executed subsequently.

4) If the terminal supports the fallback capability and the network side supports the voice service, the terminal acquires indication information which is returned by the network side and does not support the voice service and fallback indication information; the terminal is still kept in the first network where the terminal is currently located, and when the terminal needs to execute the voice service, the terminal falls back to the second network, and the second network supports the voice service.

After the network side acquires the indication information of the fallback capability of the terminal, the terminal is determined to support the fallback capability, and although the network side supports the Voice service, the indication information indicating that the Voice over PS Session is not supported can be carried in a registration reply message returned to the terminal in consideration of factors such as load conditions and user priorities, and the fallback indication information can be carried at the same time, so that the terminal can execute the fallback process when the Voice service needs to be executed.

In each of the above implementations, if the terminal supports the fallback capability, the fallback capability indication information may include the following 1) or 2):

1) the terminal supports that connection establishment which ensures that the continuity of the IP is not changed can be initiated after the terminal is redirected to a second network such as a 4G network through Radio Resource Control (RRC);

specifically, in order to support that the Attach (Attach) request message contains a Handover (Handover) identifier, the network side can correctly select the original gateway to keep the IP address of the newly-established connection unchanged from the IP address of the connection in the original network;

2) the terminal supports an active initiation Service Request (Service Request) message Request fallback.

In addition, the reason why the network side does not support the Voice over PS Session may include:

the network side does not support a handover flow based on a cross-system N26 interface, and the drop-back capability indication information reported by the terminal indicates that the terminal does not support connection establishment for ensuring unchanged IP continuity after being redirected to a 4G network through RRC;

or the network side does not support the handover flow based on the cross-system N26 interface, and does not support the flow of 'connection establishment capable of ensuring unchanged IP continuity after being redirected to the 4G network by RRC'.

Fig. 3 is a flowchart of a second embodiment of a method for selecting a network by a terminal according to the present invention. As shown in fig. 3, the following detailed implementation is included.

In 301, the terminal sends the mode information of the terminal to the network side in the process of registering to the network side.

In 302, the terminal obtains the indication information returned by the network side, wherein the indication information at least includes information whether the network side supports the voice service, and performs network selection according to the indication information.

In the embodiment shown in fig. 2, in the process of registering the terminal with the network side, the terminal may carry the fallback capability indication information of the terminal in the sent registration request, but in this embodiment, the terminal may not carry the fallback capability indication information in the registration request, but may send the mode information of the terminal to the network side, and the subsequent network side may also carry the indication information in the registration reply message returned to the terminal, so that the terminal performs network selection according to the obtained indication information.

The specific implementation can be as follows:

1) if the terminal is in a voice-centric mode and the network side does not support the voice service, the terminal acquires indication information which is returned by the network side and does not support the voice service and fallback indication information; if the terminal does not support the fallback capability, the terminal is attached to a second network through domain selection, and the second network supports voice services; if the terminal supports the fallback capability, the terminal still remains in the first network where the terminal is currently located, and when the terminal needs to execute the voice service, the terminal falls back to the second network.

After the network side acquires the indication information of the fallback capability of the terminal, if the terminal is determined to be in the Voice-centric mode and the network side does not support the Voice service, the indication information indicating that the terminal does not support the Voice over PS Session may be carried in the registration reply message returned to the terminal, and the fallback indication information may be carried at the same time, so that the terminal may execute the fallback process when the Voice service needs to be executed.

After the terminal acquires the indication information of the network side, different operations can be executed based on whether the terminal supports the fallback capability. For example, if the terminal does not support the fallback capability, the terminal may attach to the 4G network through the domain selection, and then directly execute the fallback in the 4G network when the voice service needs to be executed, and if the terminal supports the fallback capability, the terminal may still remain in the current 5G network, and then fall back to the 4G network when the voice service needs to be executed.

2) If the terminal is in a voice-centric mode and the network side supports voice services, the terminal acquires indication information of the voice services supported returned by the network side; the terminal is still kept in the first network where the terminal is currently located, and when the voice service needs to be executed, the voice service is executed in the first network.

After the network side acquires the fall-back capability indication information of the terminal, if the terminal is determined to be in the Voice-centric mode and the network side supports the Voice service, the registration reply message returned to the terminal may carry indication information indicating that the terminal supports Voice over PS Session.

3) If the terminal is in the data-centric mode, the terminal still remains in the first network where the terminal is currently located.

If the terminal is in the data-centric mode, the network side can normally execute the registration process without considering the problem of voice service support, so that the terminal is still maintained in the current 5G network.

Fig. 4 is a flowchart of a method for selecting a network by a terminal according to a third embodiment of the present invention. As shown in fig. 4, the following detailed implementation is included.

In 401, in the registration process, the network side acquires the fallback capability indication information sent by the terminal.

In 402, the network side returns indication information to the terminal, wherein the indication information at least includes information whether the network side supports voice service, so that the terminal performs network selection according to the indication information.

In the process of registering the terminal to the network side, the terminal can carry the indication information of the fallback capability of the terminal in the sent registration request, that is, the terminal is told to the network side whether to support the fallback capability. After the network side acquires the indication information of the fallback ability of the terminal, the network side can return corresponding indication information to the terminal according to whether the terminal supports voice services or not, so that the terminal can select a network according to the indication information, and the indication information can be carried in a registration reply message returned to the terminal by the network side.

The specific implementation can be as follows:

1) if the terminal does not support the fallback capability and the network side does not support the voice service, the network side returns indication information that the voice service is not supported to the terminal, so that when the terminal is in the voice-centric mode, the terminal is attached to a second network through domain selection, the second network supports the voice service, and when the terminal is in the data-centric mode, the terminal is still maintained in a first network where the terminal is currently located.

After the terminal acquires the indication information of the network side, different operations can be executed based on different modes of the terminal. For example, if the terminal is in the voice-centric mode, it may attach to the 4G network through domain selection, and then directly execute in the 4G network when it needs to execute the voice service, and if the terminal is in the data-centric mode, it may still remain in the current 5G network, and perform the subsequent processing according to the existing manner, and will not select to other networks through domain selection.

2) If the terminal supports the fallback capability and the network side does not support the voice service, the network side returns the indication information that the voice service is not supported and the fallback indication information to the terminal, so that the terminal is still maintained in the current first network, and when the voice service needs to be executed, the terminal falls back to the second network, and the second network supports the voice service.

After the network side acquires the indication information of the fallback capability of the terminal, if the terminal is determined to support the fallback capability and the network side does not support the Voice service, the indication information indicating that the terminal does not support Voice over PS Session may be carried in a registration reply message returned to the terminal, and the fallback indication information may be carried at the same time, so that the terminal may execute the fallback process when the Voice service needs to be executed.

After acquiring the indication information of the network side, the terminal can still be maintained in the current 5G network, and can fall back to the 4G network when needing to execute the voice service subsequently.

3) If the network side supports the voice service, the network side returns the indication information supporting the voice service to the terminal, so that the terminal is still maintained in the current first network, and when the voice service needs to be executed, the voice service is executed in the first network.

4) If the terminal supports the fallback capability and the network side supports the voice service, the network side returns the indication information that the voice service is not supported and the fallback indication information to the terminal so that the terminal is still maintained in the current first network, and when the voice service needs to be executed, the terminal falls back to the second network, and the second network supports the voice service.

1) the terminal supports that connection establishment which ensures that the continuity of the IP is unchanged can be initiated after the terminal falls back to a second network such as a 4G network through RRC redirection;

specifically, in order to support the fact that the Attach request message contains a Handover identifier, the network side can correctly select the original gateway to keep the IP address of the newly-established connection unchanged from the IP address of the connection in the original network;

2) the terminal supports the initiative initiation of the Service Request message Request fall back.

Fig. 5 is a flowchart of a fourth embodiment of a method for selecting a network by a terminal according to the present invention. As shown in fig. 5, the following detailed implementation is included.

In 501, in the registration process, the network side acquires the mode information sent by the terminal.

In 502, the network side returns indication information to the terminal, wherein the indication information at least includes information whether the network side supports voice service, so that the terminal performs network selection according to the indication information.

The specific implementation can be as follows:

1) if the terminal is in the voice-centric mode and the network side does not support the voice service, the network side returns the indication information that does not support the voice service and the fallback indication information to the terminal, so that the terminal is attached to the second network through the domain selection when the fallback capability is not supported, the second network supports the voice service, the terminal is still maintained in the current first network when the fallback capability is supported, and the terminal is dropped to the second network when the voice service needs to be executed.

After the terminal acquires the indication information of the network side, different operations can be executed based on whether the terminal supports the fallback capability. For example, if the terminal does not support the fallback capability, it may attach to the 4G network through the domain selection, and then may directly execute in the 4G network when the voice service needs to be executed, and if the terminal supports the fallback capability, the terminal may still remain in the current 5G network, and then may fallback to the 4G network when the voice service needs to be executed.

2) If the terminal is in the voice-centric mode and the network side supports the voice service, the network side returns the indication information supporting the voice service to the terminal, so that the terminal is still maintained in the current first network, and when the voice service needs to be executed, the voice service is executed in the first network.

3) If the terminal is in the data-centric mode, the network side does not return indication information to the terminal, so that the terminal still maintains the current first network.

The voice service described in the foregoing embodiments may refer to a normal service, for example, the terminal performs a fallback procedure to perform a normal voice service, or may refer to an emergency service, for example, the terminal performs a fallback procedure to establish a session of the emergency service on a fallback network.

The above is a description of method embodiments, and the embodiments of the present invention are further described below by way of apparatus embodiments.

Fig. 6 is a schematic structural diagram of a first embodiment of the terminal device according to the present invention. As shown in fig. 6, includes: a first sending unit 601 and a first selecting unit 602.

A first sending unit 601, configured to send fallback capability indication information of the terminal to the network side in a registration process with the network side.

A first selecting unit 602, configured to obtain indication information returned by the network side, where the indication information at least includes information about whether the network side supports a voice service, and perform network selection according to the indication information.

The first sending unit 601 may carry the fallback capability indication information in the registration request and send the registration request to the network side; the first selecting unit 602 may obtain the indication information carried in the returned registration reply message on the network side.

Specifically, if the terminal does not support the fallback capability and the network side does not support the Voice service, the first selecting unit 602 may obtain the indication information that the network side returns that the Voice service is not supported, for example, the indication information that the "Voice over PS Session" is not supported; if the terminal is in the voice-centric mode, the first selecting unit 602 may select to attach to a second network through a domain, and the second network supports a voice service; if the terminal is in the data-centric mode, the first selecting unit 602 may still be maintained in the first network where the terminal is currently located.

If the terminal supports the fallback capability and the network side does not support the voice service, the first selecting unit 602 may obtain indication information that the network side returns that the voice service is not supported and fallback indication information; the first selecting unit 602 may still remain in the first network where the voice service is currently located, and when the voice service needs to be executed, fall back to the second network, and the second network supports the voice service.

If the network side supports the voice service, the first selecting unit 602 may obtain indication information of supporting the voice service returned by the network side; the first selecting unit 602 may still be maintained in the first network where the voice service is currently located, and when the voice service needs to be executed, the voice service is executed in the first network.

If the terminal supports the fallback capability and the network side supports the voice service, the first selecting unit 602 may obtain indication information that the network side returns that the voice service is not supported and fallback indication information; the first selecting unit 602 may still remain in the first network where the voice service is currently located, and when the voice service needs to be executed, fall back to the second network, and the second network supports the voice service.

Wherein, if the terminal supports the fallback capability, the fallback capability indication information may include the following 1) or 2):

Fig. 7 is a schematic structural diagram of a second embodiment of the terminal device according to the present invention. As shown in fig. 7, includes: a second transmitting unit 701 and a second selecting unit 702.

A second sending unit 701, configured to send the mode information of the terminal to the network side in the process of registering the terminal to the network side.

A second selecting unit 702, configured to obtain indication information returned by the network side, where the indication information at least includes information about whether the network side supports the voice service, and perform network selection according to the indication information.

The second selecting unit 702 may obtain the indication information carried in the returned registration reply message on the network side.

If the terminal is in the voice-centric mode and the network side does not support the voice service, the second selecting unit 702 may obtain the indication information that the network side returns and does not support the voice service and the fallback indication information; if the terminal does not support the fallback capability, the second selecting unit 702 may select to attach to the second network through the domain, and the second network supports the voice service; if the terminal supports the fallback capability, the second selecting unit 702 may still remain in the current first network, and fall back to the second network when the voice service needs to be executed.

If the terminal is in the voice-centric mode and the network side supports the voice service, the second selecting unit 702 may obtain the indication information of supporting the voice service returned by the network side; the second selecting unit 702 may still be in the first network where the second selecting unit is currently located, and when the voice service needs to be executed, the voice service is executed in the first network.

The second selecting unit 702 may further be configured to, if the terminal is in the data-centric mode, remain in the first network where the terminal is currently located.

Fig. 8 is a schematic structural diagram of a first embodiment of a network device according to the present invention. As shown in fig. 8, includes: a first acquisition unit 801 and a first instruction unit 802.

A first obtaining unit 801, configured to obtain fallback capability indication information sent by the terminal in the registration process.

A first indication unit 802, configured to return indication information to the terminal, where the indication information at least includes information whether the network side supports the voice service, so that the terminal performs network selection according to the indication information.

The first obtaining unit 801 may obtain fallback capability indication information carried in the sent registration request by the terminal; the first indication unit 802 may carry the indication information in a registration reply message and return the registration reply message to the terminal.

If the terminal does not support the fallback capability and the network side does not support the Voice service, the first indication unit 802 may return, to the terminal, indication information that the Voice service is not supported, such as indication information indicating that "Voice over PS Session" is not supported, so that when the terminal is in the Voice-centric mode, the terminal is attached to the second network through the domain selection, and the second network supports the Voice service, and when the terminal is in the data-centric mode, the terminal is still maintained in the current first network.

If the terminal supports the fallback capability and the network side does not support the voice service, the first indication unit 802 may return the indication information that the terminal does not support the voice service and the fallback indication information to the terminal, so that the terminal still maintains the current first network, and when the voice service needs to be executed, the terminal falls back to the second network, and the second network supports the voice service.

If the network side supports the voice service, the first indicating unit 802 may return indication information of supporting the voice service to the terminal, so that the terminal still remains in the current first network, and performs the voice service in the first network when the voice service needs to be performed.

If the terminal supports the fallback capability and the network side supports the voice service, the first indication unit 802 may return indication information that the terminal does not support the voice service and fallback indication information to the terminal, so that the terminal still maintains the current first network, and when the voice service needs to be executed, the terminal falls back to the second network, and the second network supports the voice service.

Fig. 9 is a schematic structural diagram of a second embodiment of a network device according to the present invention. As shown in fig. 9, includes: a second acquiring unit 901 and a second indicating unit 902.

A second obtaining unit 901, configured to obtain the mode information sent by the terminal in the registration process.

A second indicating unit 902, configured to return indication information to the terminal, where the indication information at least includes information about whether the network side supports the voice service, so that the terminal performs network selection according to the indication information.

The second indicating unit 902 may carry the indication information in a registration reply message and return the registration reply message to the terminal.

If the terminal is in the voice-centric mode and the network side does not support the voice service, the second indicating unit 902 may return the indication information that does not support the voice service and the fallback indication information to the terminal, so that the terminal selects to attach to the second network through the domain when the terminal does not support the fallback capability, and the second network supports the voice service.

If the terminal is in the voice-centric mode and the network side supports the voice service, the second indicating unit 902 may return indication information of supporting the voice service to the terminal, so that the terminal still maintains the current first network, and executes the voice service in the first network when the voice service needs to be executed.

The second indicating unit 902 may be further configured to, if the terminal is in the data-centric mode, not return indication information to the terminal, so that the terminal still remains in the first network where the terminal is currently located.

For the specific work flow of the above device embodiments, please refer to the corresponding description in the foregoing method embodiments, and further description is omitted.

FIG. 10 illustrates a block diagram of an exemplary computer system/server 12 suitable for use in implementing embodiments of the present invention. The computer system/server 12 shown in FIG. 10 is only one example and should not be taken to limit the scope of use or functionality of embodiments of the present invention.

As shown in FIG. 10, computer system/server 12 is in the form of a general purpose computing device. The components of computer system/server 12 may include, but are not limited to: one or more processors (processing units) 16, a memory 28, and a bus 18 that connects the various system components, including the memory 28 and the processors 16.

Bus 18 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, micro-channel architecture (MAC) bus, enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.

Computer system/server 12 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by computer system/server 12 and includes both volatile and nonvolatile media, removable and non-removable media.

The memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)30 and/or cache memory 32. The computer system/server 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 10, and commonly referred to as a "hard drive"). Although not shown in FIG. 10, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.

A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.

The computer system/server 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), with one or more devices that enable a user to interact with the computer system/server 12, and/or with any devices (e.g., network card, modem, etc.) that enable the computer system/server 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. Also, the computer system/server 12 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet) via the network adapter 20. As shown in FIG. 10, network adapter 20 communicates with the other modules of computer system/server 12 via bus 18. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the computer system/server 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.

The processor 16 executes various functional applications and data processing, such as implementing the methods of fig. 2, 3, 4 or 5, by executing programs stored in the memory 28.

The invention also discloses a computer readable storage medium on which a computer program is stored, which program, when executed by a processor, will implement the method as in fig. 2, 3, 4 or 5.

Any combination of one or more computer-readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, or the like, as well as conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method, etc., can be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

A method for a terminal to select a network is characterized by comprising the following steps:

the method comprises the steps that in the process of registering a terminal to a network side, the terminal sends fallback capability indication information of the terminal to the network side;

the terminal acquires indication information returned by the network side, wherein the indication information at least comprises information whether the network side supports voice service, and network selection is carried out according to the indication information.
The method of claim 1,

the sending the fallback capability indication information of the terminal to the network side includes:

the terminal carries the fallback capability indication information in a registration request and sends the registration request to a network side;

the terminal acquires the indication information returned by the network side, and the indication information comprises the following steps:

and the terminal acquires the indication information carried in the returned registration reply message at the network side.
The method of claim 1,

the terminal acquires the indication information returned by the network side, and the network selection according to the indication information comprises the following steps:

if the terminal does not support the fallback capability and the network side does not support the voice service, the terminal acquires indication information which is returned by the network side and does not support the voice service;

if the terminal is in a voice-centric mode, the terminal is attached to a second network through domain selection, and the second network supports the voice service;

and if the terminal is in the data-centric mode, the terminal still maintains the first network where the terminal is currently located.
The method of claim 1,

the terminal acquires the indication information returned by the network side, and the network selection according to the indication information comprises the following steps:

if the terminal supports the fallback capability and the network side does not support the voice service, the terminal acquires indication information which is returned by the network side and does not support the voice service and fallback indication information;

the terminal still maintains the first network where the terminal is currently located, and when the voice service needs to be executed, the terminal falls back to a second network, and the second network supports the voice service.
The method of claim 1,

the terminal acquires the indication information returned by the network side, and the network selection according to the indication information comprises the following steps:

if the network side supports the voice service, the terminal acquires indication information which is returned by the network side and supports the voice service;

the terminal still maintains the first network where the terminal is located, and when the voice service needs to be executed, the voice service is executed in the first network.
The method of claim 1,

the terminal acquires the indication information returned by the network side, and the network selection according to the indication information comprises the following steps:

if the terminal supports the fallback capability and the network side supports the voice service, the terminal acquires indication information which is returned by the network side and does not support the voice service and fallback indication information;

the terminal still maintains the first network where the terminal is currently located, and when the voice service needs to be executed, the terminal falls back to a second network, and the second network supports the voice service.
The method of claim 1,

if the terminal supports the fallback capability, the fallback capability indication information includes:

the terminal supports the connection establishment which ensures that the continuity of the IP is unchanged after being redirected to the second network through the radio resource control;

and/or the terminal supports the initiative initiation of the service request message request fall back.
A method for a terminal to select a network is characterized by comprising the following steps:

the method comprises the steps that a terminal sends mode information of the terminal to a network side in the process of registering to the network side;

the terminal acquires indication information returned by the network side, wherein the indication information at least comprises information whether the network side supports voice service, and network selection is carried out according to the indication information.
The method of claim 8,

the terminal acquires the indication information returned by the network side, and the indication information comprises the following steps:

and the terminal acquires the indication information carried in the returned registration reply message at the network side.
The method of claim 8,

the terminal acquires the indication information returned by the network side, and the network selection according to the indication information comprises the following steps:

if the terminal is in a voice-centric mode and the network side does not support voice services, the terminal acquires indication information which is returned by the network side and does not support the voice services and fallback indication information;

if the terminal does not support the fallback capability, the terminal selects to attach to a second network through a domain, and the second network supports the voice service;

if the terminal supports the fallback capability, the terminal still remains in the current first network, and when the voice service needs to be executed, the terminal falls back to the second network.
The method of claim 8,

the terminal acquires the indication information returned by the network side, and the network selection according to the indication information comprises the following steps:

if the terminal is in a voice-centric mode and the network side supports voice services, the terminal acquires indication information which is returned by the network side and supports the voice services;

the terminal still maintains the first network where the terminal is located, and when the voice service needs to be executed, the voice service is executed in the first network.
The method of claim 8,

the method further comprises the following steps:

and if the terminal is in the data-centric mode, the terminal still maintains the first network where the terminal is currently located.
A method for a terminal to select a network is characterized by comprising the following steps:

in the registration process, a network side acquires fallback capability indication information sent by a terminal;

the network side returns indication information to the terminal, wherein the indication information at least comprises information whether the network side supports voice service, so that the terminal can select the network according to the indication information.
The method of claim 13,

the network side acquires the fallback capability indication information sent by the terminal, and the fallback capability indication information comprises:

the network side acquires the fallback capability indication information carried in the sent registration request by the terminal;

the network side returns indication information to the terminal, and the indication information comprises:

and the network side carries the indication information in a registration reply message and returns the registration reply message to the terminal.
The method of claim 13,

the network side returns indication information to the terminal, so that the network selection performed by the terminal according to the indication information comprises the following steps:

if the terminal does not support the fallback capability and the network side does not support the voice service, the network side returns indication information that the voice service is not supported to the terminal, so that when the terminal is in a voice-centric mode, the terminal is attached to a second network through domain selection, the second network supports the voice service, and when the terminal is in a data-centric mode, the terminal is still maintained in a first network where the terminal is currently located.
The method of claim 13,

the network side returns indication information to the terminal, so that the network selection performed by the terminal according to the indication information comprises the following steps:

if the terminal supports the fallback capability and the network side does not support the voice service, the network side returns indication information that the voice service is not supported and fallback indication information to the terminal, so that the terminal is still maintained in the current first network, and when the voice service needs to be executed, the terminal falls back to a second network, and the second network supports the voice service.
The method of claim 13,

the network side returns indication information to the terminal, so that the network selection performed by the terminal according to the indication information comprises the following steps:

if the network side supports the voice service, the network side returns the indication information supporting the voice service to the terminal, so that the terminal is still maintained in the current first network, and when the voice service needs to be executed, the voice service is executed in the first network.
The method of claim 13,

the network side returns indication information to the terminal, so that the network selection performed by the terminal according to the indication information comprises the following steps:

if the terminal supports the fallback capability and the network side supports the voice service, the network side returns indication information that the voice service is not supported and fallback indication information to the terminal, so that the terminal is still maintained in a first network where the terminal is located, and when the voice service needs to be executed, the terminal falls back to a second network, and the second network supports the voice service.
The method of claim 13,

if the terminal supports the fallback capability, the fallback capability indication information includes:

the terminal supports the connection establishment which ensures that the continuity of the IP is unchanged after being redirected to the second network through the radio resource control;

and/or the terminal supports the initiative initiation of the service request message request fall back.
A method for a terminal to select a network is characterized by comprising the following steps:

in the registration process, a network side acquires mode information sent by a terminal;

and the network side returns indication information to the terminal, wherein the indication information at least comprises information whether the network side supports the voice service, so that the terminal can select the network according to the indication information.
The method of claim 20,

the network side returns indication information to the terminal, and the indication information comprises:

and the network side carries the indication information in a registration reply message and returns the registration reply message to the terminal.
The method of claim 20,

the network side returns indication information to the terminal, so that the network selection performed by the terminal according to the indication information comprises the following steps:

if the terminal is in a voice-centric mode and the network side does not support the voice service, the network side returns indication information that the voice service is not supported and fallback indication information to the terminal, so that the terminal is attached to a second network through a domain selection when the fallback capability is not supported, the second network supports the voice service, the terminal is still maintained in a current first network when the fallback capability is supported, and the terminal is dropped to the second network when the voice service needs to be executed.
The method of claim 20,

the network side returns indication information to the terminal, so that the network selection performed by the terminal according to the indication information comprises the following steps:

if the terminal is in a voice-centric mode and the network side supports voice services, the network side returns indication information supporting the voice services to the terminal so that the terminal is still maintained in a first network where the terminal is currently located, and when the voice services need to be executed, the voice services are executed in the first network.
The method of claim 20,

the method further comprises the following steps:

and if the terminal is in the data-centric mode, the network side does not return the indication information to the terminal so that the terminal still maintains the current first network.
A terminal device, comprising: a first sending unit and a first selecting unit;

the first sending unit is used for sending the fallback capability indication information of the terminal to the network side in the process of registering to the network side;

the first selection unit is configured to acquire indication information returned by a network side, where the indication information at least includes information about whether the network side supports a voice service, and perform network selection according to the indication information.
The terminal device of claim 25,

the first sending unit carries the fallback capability indication information in a registration request and sends the registration request to a network side;

and the first selection unit acquires the indication information carried in the returned registration reply message at the network side.
The terminal device of claim 25,

if the terminal does not support the fallback capability and the network side does not support the voice service, the first selecting unit obtains indication information which is returned by the network side and does not support the voice service;

if the terminal is in a voice-centric mode, the first selection unit selects to attach to a second network through a domain, and the second network supports the voice service;

and if the terminal is in the data-centric mode, the first selection unit still maintains the first network where the terminal is currently located.
The terminal device of claim 25,

if the terminal supports the fallback capability and the network side does not support the voice service, the first selection unit acquires indication information which is returned by the network side and does not support the voice service and fallback indication information;

the first selection unit is still maintained in the current first network, and when the voice service needs to be executed, the first selection unit falls back to a second network, and the second network supports the voice service.
The terminal device of claim 25,

if the network side supports the voice service, the first selection unit acquires indication information which is returned by the network side and supports the voice service;

the first selection unit is still kept in the current first network, and when the voice service needs to be executed, the voice service is executed in the first network.
The terminal device of claim 25,

if the terminal supports the fallback capability and the network side supports the voice service, the first selection unit obtains indication information which is returned by the network side and does not support the voice service and fallback indication information;

the first selection unit is still maintained in the current first network, and when the voice service needs to be executed, the first selection unit falls back to a second network, and the second network supports the voice service.
The terminal device of claim 25,

if the terminal supports the fallback capability, the fallback capability indication information includes:

the terminal supports the connection establishment which ensures that the continuity of the IP is unchanged after being redirected to the second network through the radio resource control;

and/or the terminal supports the initiative initiation of the service request message request fall back.
A terminal device, comprising: a second transmitting unit and a second selecting unit;

the second sending unit is used for sending the mode information of the terminal to the network side in the process of registering the terminal to the network side;

the second selecting unit is configured to obtain indication information returned by the network side, where the indication information at least includes information about whether the network side supports a voice service, and perform network selection according to the indication information.
The terminal device of claim 32,

and the second selection unit acquires the indication information carried in the returned registration reply message at the network side.
The terminal device of claim 32,

if the terminal is in a voice-centric mode and the network side does not support the voice service, the second selection unit acquires indication information which is returned by the network side and does not support the voice service and fallback indication information;

if the terminal does not support the fallback capability, the second selecting unit selects to attach to a second network through a domain, and the second network supports the voice service;

if the terminal supports the fall-back capability, the second selection unit still maintains the first network where the terminal is located, and when the voice service needs to be executed, the terminal falls back to the second network.
The terminal device of claim 32,

if the terminal is in a voice-centric mode and the network side supports voice services, the second selecting unit obtains indication information which is returned by the network side and supports the voice services;

the second selection unit is still maintained in the current first network, and when the voice service needs to be executed, the voice service is executed in the first network.
The terminal device of claim 32,

the second selecting unit is further configured to, if the terminal is in the data-centric mode, remain in the current first network.
A network-side device, comprising: the device comprises a first acquisition unit and a first indication unit;

the first obtaining unit is used for obtaining the fallback capability indication information sent by the terminal in the registration process;

the first indication unit is configured to return indication information to the terminal, where the indication information at least includes information about whether a network side supports a voice service, so that the terminal performs network selection according to the indication information.
The network-side device of claim 37,

the first obtaining unit obtains the fallback capability indication information carried in the sent registration request by the terminal;

and the first indicating unit carries the indicating information in a registration reply message and returns the information to the terminal.
The network-side device of claim 37,

if the terminal does not support the fallback capability and the network side does not support the voice service, the first indication unit returns indication information that the voice service is not supported to the terminal, so that when the terminal is in a voice-centric mode, the terminal is attached to a second network through domain selection, the second network supports the voice service, and when the terminal is in a data-centric mode, the terminal is still maintained in a first network where the terminal is currently located.
The network-side device of claim 37,

if the terminal supports the fallback capability and the network side does not support the voice service, the first indication unit returns indication information that the voice service is not supported and fallback indication information to the terminal, so that the terminal is still maintained in the current first network, and when the voice service needs to be executed, the terminal falls back to a second network, and the second network supports the voice service.
The terminal device of claim 37,

if the network side supports the voice service, the first indication unit returns indication information supporting the voice service to the terminal, so that the terminal is still maintained in the current first network, and when the voice service needs to be executed, the voice service is executed in the first network.
The network-side device of claim 37,

if the terminal supports the fallback capability and the network side supports the voice service, the first indication unit returns indication information that the voice service is not supported and fallback indication information to the terminal, so that the terminal is still maintained in the current first network, and when the voice service needs to be executed, the terminal falls back to a second network, and the second network supports the voice service.
The network-side device of claim 37,

if the terminal supports the fallback capability, the fallback capability indication information includes:

the terminal supports the connection establishment which ensures that the continuity of the IP is unchanged after being redirected to the second network through the radio resource control;

and/or the terminal supports the initiative initiation of the service request message request fall back.
A network-side device, comprising: a second acquisition unit and a second indication unit;

the second obtaining unit is used for obtaining the mode information sent by the terminal in the registration process;

the second indicating unit is configured to return indication information to the terminal, where the indication information at least includes information about whether a network side supports a voice service, so that the terminal performs network selection according to the indication information.
The network-side device of claim 44,

and the second indicating unit carries the indicating information in a registration reply message and returns the information to the terminal.
The network-side device of claim 44,

if the terminal is in a voice-centric mode and the network side does not support the voice service, the second indicating unit returns the indicating information that does not support the voice service and the fallback indicating information to the terminal, so that the terminal is attached to a second network through a domain selection when the terminal does not support the fallback capability, the second network supports the voice service, the terminal is still maintained in the current first network when the fallback capability is supported, and the terminal is dropped to the second network when the voice service needs to be executed.
The network-side device of claim 44,

if the terminal is in a voice-centric mode and a network side supports a voice service, the second indicating unit returns indication information supporting the voice service to the terminal, so that the terminal is still maintained in a current first network, and when the voice service needs to be executed, the voice service is executed in the first network.
The network-side device of claim 44,

the second indicating unit is further configured to, if the terminal is in the data-centric mode, not return the indication information to the terminal, so that the terminal is still maintained in the current first network.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements a method as claimed in any one of claims 1 to 24.
A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 1 to 24.