CN115835176B

CN115835176B - Method, device and medium for processing EPLMN list in core network roaming scene

Info

Publication number: CN115835176B
Application number: CN202211354132.5A
Authority: CN
Inventors: 师瑜; 周晶; 丁志东
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2024-03-19
Anticipated expiration: 2042-11-01
Also published as: CN115835176A

Abstract

The invention provides a processing method, a device and a medium of an EPLMN list in a core network roaming scene, wherein the method comprises the following steps: receiving an EPLMN list sent by home network core network equipment, wherein the EPLMN list carries roaming PLMN of a visiting network equivalent to home PLMN of the home network; judging whether the roaming PLMN in the EPLMN list needs to be deleted or not according to the capability information of the terminal and the pre-stored capability information of the visiting network; if yes, deleting the roaming PLMN in the EPLMN list; and if not, reserving the roaming PLMN in the EPLMN list. The method, the device and the medium can solve the problems that after receiving the EPLMN list, the terminal easily cannot use voice service by reselecting or redirecting to the visiting 5G network in the prior art, and the user experience is seriously influenced.

Description

Method, device and medium for processing EPLMN list in core network roaming scene

Technical Field

The present invention relates to the field of network technologies, and in particular, to a method, an apparatus, and a medium for processing an EPLMN list in a roaming scenario of a core network.

Background

The 5G core network roaming refers to that under the independent networking (SA) mode, a home network side 5G user uses 5G service in a 5G roaming area by accessing a visiting network side 5G network. The network architecture of 5G core network roaming can be classified into core network roaming in a "home network signal" scenario and core network roaming in a "no home network signal" scenario according to the scenario. In the case of home network signal, when a 5G terminal needs to be attached to/registered with a 4G/5G core network of a home network for the first time, when the home 4G/5G network hopes that a user can enter a visiting 5G network under the condition of insufficient coverage, an EPLMN (Equivalent Public Land Mobile Network, peer-to-peer public land mobile network) list (EPLMN list) is issued to the terminal, after the terminal receives the EPLMN list, the terminal knows that the current PLMN (Public Land Mobile Network ) has a roaming PLMN as the EPLMN, the terminal meets the reselection requirement, or when the network instructs the terminal to redirect to the PLMN, the terminal can reselect or redirect to the visiting 5G network, however, when the terminal moves to the visiting 5G network, the situation that voice service cannot be used easily occurs, and the user experience is seriously affected.

Disclosure of Invention

The invention aims to solve the technical problems that aiming at the defects in the prior art, the invention provides a method, a device and a medium for processing an EPLMN list in a core network roaming scene, which are used for solving the problems that after receiving the EPLMN list, a terminal in the prior art easily generates the situation that voice service cannot be used by reselecting or redirecting to a visiting 5G network, and the user experience is seriously influenced.

In a first aspect, the present invention provides a method for processing an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network, which is applied to a terminal, and the method includes:

receiving an EPLMN list sent by home network core network equipment, wherein the EPLMN list carries roaming PLMN of a visiting network equivalent to home PLMN of the home network;

judging whether the roaming PLMN in the EPLMN list needs to be deleted or not according to the capability information of the terminal and the pre-stored capability information of the visiting network;

if yes, deleting the roaming PLMN in the EPLMN list;

and if not, reserving the roaming PLMN in the EPLMN list.

Further, before the receiving the EPLMN list sent by the home network core network device, the method further includes:

Sending an attach request/registration request to the home network core network device, wherein the attach request/registration request carries registration information of the terminal, and the registration information comprises: the position information of the terminal and/or the international mobile subscriber identity IMSI and/or the international mobile equipment identity IMEI and/or the international mobile subscriber integrated service digital network MSISDN so that the home network core network equipment judges whether the terminal meets the core network roaming condition according to the position information of the terminal and/or the IMSI and/or the IMEI and/or the MSISDN;

the receiving the EPLMN list sent by the home network core network device specifically includes:

and receiving an attach accept message/registration accept message carrying the EPLMN list sent by the home network core network equipment when judging that the terminal meets the core network roaming condition.

Further, before determining whether the roaming PLMN in the EPLMN list needs to be deleted according to the capability information of the terminal and the pre-stored capability information of the visited network, the method further includes:

acquiring and storing the capability information of the visiting network from a core network roaming platform; or,

acquiring and storing the capability information of the visiting network through a palm business hall application program of the home network; or,

And receiving and storing the capability information of the visiting network, which is sent by the home network core network equipment.

Further, the determining whether the roaming PLMN in the EPLMN list needs to be deleted according to the capability information of the terminal and the pre-stored capability information of the visited network specifically includes:

and judging whether the roaming PLMN in the EPLMN list needs to be deleted or not according to the new air interface voice VoNR capability and/or the evolved packet network fallback EPS FB capability of the terminal and the VoNR capability and EPS FB capability of the visiting network.

Further, the determining whether the roaming PLMN in the EPLMN list needs to be deleted according to the new air interface voice VoNR capability and/or evolved packet switched (EPS FB) capability of the terminal and the VoNR capability and EPS FB capability of the visited network specifically includes at least one of the following:

if the visiting network supports VoNR capability and EPS FB capability, the terminal supports at least one of VoNR capability and EPS FB capability, judging that the roaming PLMN in the EPLMN list does not need to be deleted;

if the visiting network supports VoNR capability and EPS FB capability, the terminal does not support VoNR capability and EPS FB capability and is a non-voice terminal, judging that the roaming PLMN in the EPLMN list does not need to be deleted;

If the visiting network supports VoNR capability but does not support EPS FB capability, the terminal supports VoNR capability, judging that the roaming PLMN in the EPLMN list does not need to be deleted;

if the visiting network supports VoNR capability but does not support EPS FB capability, the terminal does not support VoNR capability but supports EPS FB capability, judging that the roaming PLMN in the EPLMN list needs to be deleted;

if the visiting network supports VoNR capability but does not support EPS FB capability, the terminal does not support VoNR capability and EPS FB capability and is a non-voice terminal, judging that the roaming PLMN in the EPLMN list does not need to be deleted;

if the visiting network does not support VoNR capability but supports EPS FB capability, the terminal supports EPS FB capability, judging that the roaming PLMN in the EPLMN list does not need to be deleted;

if the visiting network does not support VoNR capability but EPS FB capability, the terminal supports VoNR capability but does not support EPS FB capability, judging that the roaming PLMN in the EPLMN list needs to be deleted;

if the visiting network does not support VoNR capability but supports EPS FB capability, the terminal does not support VoNR capability and EPS FB capability and is a non-voice terminal, judging that the roaming PLMN in the EPLMN list does not need to be deleted;

If the visiting network does not support VoNR capability or EPS FB capability, the terminal supports at least one of VoNR capability and EPS FB capability, judging that the roaming PLMN in the EPLMN list needs to be deleted;

if the visiting network does not support VoNR capability and EPS FB capability, the terminal does not support VoNR capability and EPS FB capability and is a non-voice terminal, judging that the roaming PLMN in the EPLMN list does not need to be deleted.

Further, after the deleting the roaming PLMN in the EPLMN list, the method further includes:

and deleting the frequency point of the visiting network in the supported frequency band information.

In a second aspect, the present invention provides a method for processing an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network, which is applied to a home network core network device, and the method includes:

and sending an EPLMN list to the terminal, wherein the EPLMN list carries roaming PLMNs of a visiting network equivalent to the home PLMNs of the home network, so that the terminal judges whether the roaming PLMNs in the EPLMN list need to be deleted according to own capability information and pre-stored capability information of the visiting network, deletes the roaming PLMNs in the EPLMN list when the judging result is yes, and reserves the roaming PLMNs in the EPLMN list when the judging result is no.

Further, the sending the EPLMN list to the terminal specifically includes:

judging whether the terminal meets the roaming condition of the core network or not;

if yes, the EPLMN list is sent to the terminal.

Further, before the determining whether the terminal meets the roaming condition of the core network, the method further includes:

receiving an attach request/registration request sent by the terminal, wherein the attach request/registration request carries registration information of the terminal, and the registration information comprises: the position information of the terminal and/or the international mobile subscriber identity IMSI and/or the international mobile equipment identity IMEI and/or the international mobile subscriber integrated services digital network MSISDN;

the judging whether the terminal meets the roaming condition of the core network specifically comprises the following steps:

judging whether the terminal meets the roaming condition of the core network according to the position information, and/or IMSI, and/or IMEI, and/or MSISDN of the terminal.

Further, the sending the EPLMN list to the terminal specifically includes:

and sending an attach accept message/registration accept message carrying the EPLMN list to the terminal.

Further, the attach accept message/registration accept message further carries capability information of the visited network, and before the attach accept message/registration accept message carrying the EPLMN list is sent to the terminal, the method further includes:

And acquiring the capability information of the visiting network, wherein the capability information of the visiting network comprises new air interface voice VoNR capability and evolved packet circuit (EPS FB) capability.

In a third aspect, the present invention provides a processing device for an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network, where the processing device is disposed in a terminal, and the device includes:

a list receiving module, configured to receive an EPLMN list sent by a home network core network device, where the EPLMN list carries a roaming PLMN of a visited network equivalent to a home PLMN of the home network;

the deletion judging module is connected with the list receiving module and is used for judging whether the roaming PLMN in the EPLMN list needs to be deleted or not according to the capability information of the terminal and the pre-stored capability information of the visiting network;

the first processing module is connected with the deletion judging module and is used for deleting the roaming PLMN in the EPLMN list when the judgment result of the deletion judging module is yes;

and the second processing module is connected with the deletion judging module and is used for reserving the roaming PLMN in the EPLMN list when the result of the deletion judging module is negative.

In a fourth aspect, the present invention provides a processing apparatus for an EPLMN list of a peer-to-peer public land mobile network in a core network roaming scenario, which is disposed in a home network core network device, and the apparatus includes:

The list sending module is used for sending an EPLMN list to the terminal, wherein the EPLMN list carries roaming PLMN of a visiting network equivalent to the home PLMN of the home network, so that the terminal judges whether the roaming PLMN in the EPLMN list needs to be deleted according to own capability information and pre-stored capability information of the visiting network, deletes the roaming PLMN in the EPLMN list when the judging result is yes, and reserves the roaming PLMN in the EPLMN list when the judging result is no.

In a fifth aspect, the present invention provides a processing device for a peer-to-peer public land mobile network EPLMN list in a core network roaming scenario, including a memory and a processor, where the memory stores a computer program, and the processor is configured to run the computer program to implement the processing method for a peer-to-peer public land mobile network EPLMN list in a core network roaming scenario according to the first or second aspect.

In a sixth aspect, the present invention provides a computer readable storage medium, where a computer program is stored, where the computer program when executed by a processor implements the method for processing an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network according to the first or second aspect.

According to the method, the device and the medium for processing the EPLMN list in the core network roaming scene, when the terminal receives the EPLMN list sent by the home network core network equipment, whether the roaming PLMN in the EPLMN list needs to be deleted is judged according to the capability information of the terminal and the pre-stored capability information of the visiting network, if yes, the roaming PLMN in the EPLMN list is deleted, so that when the terminal cannot use the voice service of the visiting network, the terminal cannot roam to the visiting network through reselection or redirection, the operation of frequent network selection of the terminal can be reduced, the user experience is improved, if not, the roaming PLMN in the EPLMN list is reserved, and therefore the problem that in the prior art, after the terminal receives the EPLMN list, the terminal easily fails to use the voice service through reselection or redirection to the 5G network, and the user experience is seriously influenced is solved.

Drawings

Fig. 1 is a schematic diagram of a roaming architecture of a core network in a home network signal scenario according to an embodiment of the present invention;

Fig. 2 is a flowchart of a processing method of an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network according to embodiment 1 of the present invention;

fig. 3 is a flowchart of a processing method of an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network according to embodiment 2 of the present invention;

fig. 4 is a schematic structural diagram of a processing device of an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network according to embodiment 3 of the present invention;

fig. 5 is a schematic structural diagram of a processing device of an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network according to embodiment 4 of the present invention;

fig. 6 is a schematic structural diagram of a processing device of an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network according to embodiment 5 of the present invention.

Detailed Description

In order to make the technical scheme of the present invention better understood by those skilled in the art, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings.

It is to be understood that the specific embodiments and figures described herein are merely illustrative of the invention, and are not limiting of the invention.

It is to be understood that the various embodiments of the invention and the features of the embodiments may be combined with each other without conflict.

It is to be understood that only the portions relevant to the present invention are shown in the drawings for convenience of description, and the portions irrelevant to the present invention are not shown in the drawings.

It should be understood that each unit and module in the embodiments of the present invention may correspond to only one physical structure, may be formed by a plurality of physical structures, or may be integrated into one physical structure.

It will be appreciated that, without conflict, the functions and steps noted in the flowcharts and block diagrams of the present invention may occur out of the order noted in the figures.

It is to be understood that the flowcharts and block diagrams of the present invention illustrate the architecture, functionality, and operation of possible implementations of systems, apparatuses, devices, methods according to various embodiments of the present invention. Where each block in the flowchart or block diagrams may represent a unit, module, segment, code, or the like, which comprises executable instructions for implementing the specified functions. Moreover, each block or combination of blocks in the block diagrams and flowchart illustrations can be implemented by hardware-based systems that perform the specified functions, or by combinations of hardware and computer instructions.

It should be understood that the units and modules related in the embodiments of the present invention may be implemented by software, or may be implemented by hardware, for example, the units and modules may be located in a processor.

Summary of the application

In recent years, the development of 5G technology is rapid, however, the deployment investment cost of the 5G network is high, and the development speed of the 5G network is greatly restricted, so that the 5G shared network technology is also attracting more attention as a network cost optimization mode, and the 5G co-building shared network is divided into two network architectures, namely 5G access network sharing and 5G core network roaming. The 5G core network roaming refers to that under an independent networking (SA) mode, a home network side 5G user uses a 5G service in a 5G roaming area by accessing to a visited network side 5G network. 5G access networks and core networks of both sides of the 5G core network roaming operators are independently constructed and managed, and users are independently managed. The main stream 5G core network roaming is realized by adopting a home route mode, namely roaming user data returns to a home network, and the service is provided by the home network. In the network providing 5G core network roaming, data service, voice/video service based on IMS (IP Multimedia Subsystem ) and SMS over IP short message service should be provided for users, and both operators providing 5G core network roaming service should provide corresponding services for roaming users based on the Internet roaming protocol.

Currently, the network architecture of 5G core network roaming can be classified into core network roaming in a "home network signal" scenario and core network roaming in a "no home network signal" scenario according to the scenario. The 3GPP defined core network roaming mainly refers to an international roaming scenario, that is, when no home network signal is available, the terminal can access using a visited network 5G service, there are no N26 interface and N14 interface between the 4G/5G core network of the home network and the 5G core network of the roaming network, the N26 interface is an interface between the home network MME (Mobility Management Entity ) and the roaming network AMF (Access and Mobility Management Function ), and the N14 interface is an interface between the home network AMF and the roaming network AMF. However, in many areas, users also want to be able to access and use the 5G network when there is a home 4G network, so it is also important that the core network roams with home network signals.

Fig. 1 shows a schematic diagram of a core network roaming architecture in a home network signal scenario, in which a 5G terminal needs to be attached to/registered with a 4G/5G core network of a home network when it is first accessed, when the home network signal scenario is present, the home network 4G/5G network hopes that a user can enter a visited 5G network under the condition of insufficient coverage, an EPLMN list (EPLMN list) is issued to the terminal, a roaming PLMN of the visited network is set as an equivalent PLMN of the home network, the roaming PLMN is set as a high priority PLMN, after the terminal receives the EPLMN list, it is known that the current PLMN has the roaming PLMN as the EPLMN, the terminal meets the reselection requirement, or when the network instructs the terminal to redirect to the roaming PLMN, the terminal can reselect or redirect to the visited 5G network, however, when the terminal moves to the visited 5G network, a situation that voice service cannot be used easily occurs, and user experience is seriously affected. For example, when the operator a and the operator B deploy a core network roaming scheme in a signaling scenario, the operator B may provide VoNR (Voice Over New Radio, new air interface voice) voice service for the user UEA of the operator a, but since the operator B does not open an N26 interface with the operator a, an EPS FB (EPS Fallback) service cannot be provided for the user of the operator a. When the 4G/5G network of the operator a attaches/registers to the a network, the EPLMN list is issued to the ue a, and the PLMN a and the PLMN X are set as equivalent PLMNs, and then the ue a can satisfy the 5G network reselected and redirected from the operator network a to the operator B. However, there are both terminals supporting VoNR and terminals not supporting VoNR under the network of the operator a, and when the terminal ue a not supporting VoNR roams to the 5G network of the operator B, the network of the operator B cannot provide voice service for the ue a, and the terminal returns to 4G in a network-off re-search manner or cannot use voice service, so that user experience is very affected.

Aiming at the technical problems, the conception of the application is to provide a processing method, a device and a medium of an EPLMN list in a core network roaming scene, when a terminal receives the EPLMN list sent by a home network core network device, judging whether the roaming PLMN in the EPLMN list needs to be deleted according to capability information of the terminal and pre-stored capability information of a visiting network, if so, deleting the roaming PLMN in the EPLMN list, thereby ensuring that the terminal cannot use voice service of the visiting network, and roaming the terminal under the visiting network without reselection or redirection, reducing frequent network selecting operation of the terminal, improving user experience, and if not, reserving the roaming PLMN in the EPLMN list, thereby ensuring that the terminal can use voice service of the visiting network by reselection or redirection.

Having described the basic principles of the present application, various non-limiting embodiments of the present application will now be described in detail with reference to the accompanying drawings.

Example 1:

the embodiment provides a method for processing an EPLMN list of a peer-to-peer public land mobile network in a core network roaming scenario, which is applied to a terminal, as shown in fig. 2, and includes:

Step S101: and receiving an EPLMN list sent by home network core network equipment, wherein the EPLMN list carries roaming PLMN of a visiting network equivalent to the home PLMN of the home network.

In this embodiment, when the home network is a 4G network, the home network core network device may be an MME of the home network, and when the home network is a 5G network, the home network core network device may be an AMF of the home network.

Optionally, before the receiving the EPLMN list sent by the home network core network device, the method may further include:

sending an attach request/registration request to the home network core network device, wherein the attach request/registration request carries registration information of the terminal, and the registration information comprises: the location information and/or IMSI (International Mobile Subscriber Identity ), and/or IMEI (International Mobile Equipment Identity, international mobile equipment identity), and/or MSISDN (Mobile Subscriber International ISDN, international mobile subscriber integrated services digital network) of the terminal, so that the home network core network device determines whether the terminal meets a core network roaming condition according to the location information and/or IMSI, and/or IMEI, and/or MSISDN of the terminal.

In the present embodiment, when a terminal attaches to a 4G home network, an attach request is sent to a home network core network device, in which registration information of the terminal is carried, and when a terminal registers to a 5G home network, a Registration request (registration request), in which registration information of the terminal is carried, is sent to the home network core network device. The registration information may include: the location information of the terminal, such as TAC (Tracking Area Code ), IMSI, IMEI, MSISDN, IMS (IP Multimedia Subsystem, multimedia subsystem) voice capability (IMS PS Voice preferred, i.e., IMS packet domain voice priority, CS Voice as secondary, i.e., circuit domain voice priority second), short message capability, emergency call capability, etc., is directly sent to the home network core network through NAS message.

In this embodiment, different operators may set different core network roaming conditions according to implementation situations, for example, the home network core network device may determine whether the terminal meets the core network roaming conditions only according to TAC location information or IMSI of the terminal, or may determine whether the terminal meets the core network roaming conditions according to a combination of TAC location information and IMSI.

Optionally, the receiving the EPLMN list sent by the home network core network device specifically includes:

In this embodiment, when the home network core network device determines that the terminal meets the core network roaming condition, the EPLMN list is configured for the terminal, so that the roaming PLMN of the visited network is set as an equivalent PLMN of the home network, and the terminal does not need to report the VoNR capability, and the EPLMN list is sent to the terminal through an attach accept message (attach accept)/registration accept message (Registration accept).

Step S102: judging whether the roaming PLMN in the EPLMN list needs to be deleted or not according to the capability information of the terminal and the pre-stored capability information of the visiting network;

in this embodiment, the terminal may acquire and save capability information of the visited network in advance, where the capability information of the visited network may include a VoNR capability, an EPS FB capability, an IMS emergency call capability, and so on.

Optionally, before determining whether the roaming PLMN in the EPLMN list needs to be deleted according to the capability information of the terminal and the pre-stored capability information of the visited network, the method further includes:

In this embodiment, the terminal may obtain and store the capability information of the visited network in advance in any one of the following manners:

a) The terminal directly acquires the capability information of the visited network from the core network roaming platform;

b) The terminal obtains the capability of the visiting network through a third party platform (considering that the home network and the visiting network may not have an interface capable of communicating with each other and may not be capable of transmitting information), and the platform of the third party only issues the capability information of the home network and the visiting network for the terminal, so that the home network and the visiting network can be ensured not to know the states of the two parties in real time, and the concerns of data transmission between operators and safety and the like brought by opening the interface are solved. The third party platform can be, for example, a palm business hall APP of the home network, and if the terminal successfully resides in the home network, the palm business hall APP pushes the capability information of the visiting network to the terminal in real time;

c) The home network and the visiting network communicate capability information in advance, namely, the capability information of both sides is pre-stored in the core network of the home network and the core network of the visiting network, and the home network core network equipment can send the capability information of the visiting network to the terminal through the attachment acceptance message/registration acceptance message.

In this embodiment, it may be specifically determined whether the roaming PLMN in the EPLMN list needs to be deleted according to the VoNR capability and/or EPS FB capability of the terminal and the VoNR capability and EPS FB capability of the visited network.

Optionally, the determining whether the roaming PLMN in the EPLMN list needs to be deleted according to the VoNR capability and/or EPS FB capability of the terminal and the VoNR capability and EPS FB capability of the visited network specifically includes at least one of the following:

In this embodiment, after obtaining the EPLMN list, the terminal finds that the roaming PLMN (PLMNIDB) of the visited network is equivalent to the home PLMN (PLMNIDA) of the home network, and starts to check capability information of the terminal and the visited network, so as to determine whether the roaming PLMN in the EPLMN list needs to be deleted, for example, whether the roaming PLMN in the EPLMN list needs to be deleted may be determined according to table 1, as shown in table 1, if the determination result is yes, it indicates that the roaming PLMN in the EPLMN list needs to be deleted, and if the determination result is no, it indicates that the roaming PLMN in the EPLMN list needs to be retained.

Table 1: correspondence between terminal and visited network capability information and whether to delete roaming PLMN:

In this embodiment, on the basis of the VoNR capability and the EPS FB capability, whether the roaming PLMN in the EPLMN list needs to be deleted may be further determined according to need by other capabilities, for example:

(a) The terminal supports the visit network frequency point, EPSFB and VoNR; the visiting network supports VoNR and does not support EPSFB, if the terminal with voice priority needs to delete the roaming PLMN in the EPLMN list; for the terminal with data priority, the roaming PLMN in the EPLMN list does not need to be deleted (the mobile phone terminal cannot perform voice service on the visiting network);

(b) The terminal does not support the visit network frequency point, supports EPSFB and VoNR; the visiting network supports VoNR and EPSFB, and the roaming PLMN in the EPLMN list needs to be deleted (the terminal cannot access the visiting network because the terminal does not support the visiting network frequency point);

(c) The terminal supports the frequency point of the visiting network, supports EPSFB, supports VoNR, supports IMS emergency call, the visiting network supports VoNR, does not support EPSFB, does not support IMS emergency call, and needs to delete roaming PLMN in the EPLMN list (the terminal meets the roaming condition of the core network but needs to return to the home network for emergency call service);

(d) The visiting network supports VoNR and EPSFB, but not IMS emergency call, and the terminal supports EPSFB, voNR and IMS emergency call, and the roaming PLMN in the EPLMN list does not need to be deleted.

Step S103: if yes, deleting the roaming PLMN in the EPLMN list.

In this embodiment, when it is determined that the roaming PLMN in the EPLMN list needs to be deleted according to capability information of the terminal and capability information of a pre-stored visited network, the roaming PLMN in the EPLMN list is deleted, so that when the terminal cannot use voice service of the visited network, the terminal cannot roam under the visited network through reselection or redirection, and frequent network selection operations of the terminal can be reduced, and user experience is improved.

Optionally, after the deleting the roaming PLMN in the EPLMN list, the method further includes:

In this embodiment, in order to more thoroughly avoid misoperation to the visited network, the terminal updates its own capability information, that is, deletes the frequency point information of the visited network from the supported frequency band information, and the home network will not require the terminal to redirect or switch to the frequency point of the visited network.

Step S104: and if not, reserving the roaming PLMN in the EPLMN list.

In this embodiment, when it is determined that the roaming PLMN in the EPLMN list does not need to be deleted according to the capability information of the terminal and the pre-stored capability information of the visited network, the roaming PLMN in the EPLMN list is reserved, so that when the terminal can use the voice service of the visited network, the roaming can be ensured to be performed under the visited network through reselection or redirection.

According to the processing method of the peer-to-peer public land mobile network EPLMN list in the core network roaming scene, when the terminal receives the EPLMN list sent by the home network core network equipment, whether the roaming PLMN in the EPLMN list needs to be deleted is judged according to the capability information of the terminal and the pre-stored capability information of the visiting network, if yes, the roaming PLMN in the EPLMN list is deleted, so that the situation that voice service cannot be used easily by the terminal through reselection or redirection to the visiting 5G network when the terminal cannot use the voice service of the visiting network can be guaranteed, the frequent network selecting operation of the terminal can be reduced, user experience is improved, if not, the roaming PLMN in the EPLMN list is reserved, and therefore the problem that the situation that the voice service cannot be used easily by the terminal through reselection or redirection to the visiting 5G network in the prior art when the terminal can use the voice service of the visiting network can be guaranteed.

Example 2:

as shown in fig. 3, the present embodiment provides a method for processing an EPLMN list of a peer-to-peer public land mobile network in a core network roaming scenario, which is applied to a home network core network device, and the method includes:

step S201: and sending an EPLMN list to the terminal, wherein the EPLMN list carries roaming PLMNs of a visiting network equivalent to the home PLMNs of the home network, so that the terminal judges whether the roaming PLMNs in the EPLMN list need to be deleted according to own capability information and pre-stored capability information of the visiting network, deletes the roaming PLMNs in the EPLMN list when the judging result is yes, and reserves the roaming PLMNs in the EPLMN list when the judging result is no.

Optionally, the sending the EPLMN list to the terminal specifically includes:

if yes, the EPLMN list is sent to the terminal.

Optionally, before the determining whether the terminal meets the core network roaming condition, the method further includes:

Optionally, the sending the EPLMN list to the terminal specifically includes:

Optionally, the attach accept message/register accept message further carries capability information of the visited network, and before sending the attach accept message/register accept message carrying the EPLMN list to the terminal, the method further includes:

In this embodiment, the capability information of interworking is pre-stored between the home network and the visited network, that is, the core network of the home network and the core network of the visited network each pre-store the capability information of both parties, and the home network core network device may send the capability information of the visited network to the terminal through the attach accept message/register accept message.

Example 3:

as shown in fig. 4, this embodiment provides a processing apparatus of an EPLMN list of a peer-to-peer public land mobile network in a core network roaming scenario, which is disposed in a terminal and configured to execute the processing method of the EPLMN list of the peer-to-peer public land mobile network in the core network roaming scenario in embodiment 1, where the apparatus includes:

a list receiving module 11, configured to receive an EPLMN list sent by a home network core network device, where the EPLMN list carries a roaming PLMN of a visited network equivalent to a home PLMN of the home network;

a deletion judging module 12, connected to the list receiving module 11, for judging whether the roaming PLMN in the EPLMN list needs to be deleted according to the capability information of the terminal and the capability information of the pre-stored visited network;

a first processing module 13, connected to the deletion judging module 12, configured to delete the roaming PLMN in the EPLMN list when the deletion judging module judges that the result is yes;

and the second processing module 14 is connected to the deletion judging module 12, and is configured to retain the roaming PLMN in the EPLMN list when the deletion judging module judges that the result is negative.

Optionally, the apparatus further comprises:

A request sending module, configured to send an attach request/registration request to the home network core network device, where the attach request/registration request carries registration information of the terminal, and the registration information includes: the position information of the terminal and/or the international mobile subscriber identity IMSI and/or the international mobile equipment identity IMEI and/or the international mobile subscriber integrated service digital network MSISDN so that the home network core network equipment judges whether the terminal meets the core network roaming condition according to the position information of the terminal and/or the IMSI and/or the IMEI and/or the MSISDN;

the list receiving module 11 is specifically configured to receive an attach accept message/registration accept message carrying the EPLMN list sent by the home network core network device when it is determined that the terminal meets a core network roaming condition.

Optionally, the apparatus further comprises:

the visit capacity acquisition module is used for acquiring and storing the capacity information of the visit network from the core network roaming platform; or acquiring and storing the capability information of the visiting network through a palm business hall application program of the home network; or receiving and storing the capability information of the visiting network sent by the home network core network equipment.

Optionally, the deletion determining module 12 is specifically configured to:

Optionally, the deletion determining module 12 is specifically configured to at least one of:

Optionally, the apparatus further comprises:

and the frequency point deleting module is used for deleting the frequency point of the visiting network in the supported frequency band information.

Example 4:

as shown in fig. 5, this embodiment provides a processing apparatus of an EPLMN list of a peer-to-peer public land mobile network in a core network roaming scenario, which is disposed in a home network core network device and is configured to execute the processing method of the EPLMN list of the peer-to-peer public land mobile network in the core network roaming scenario in embodiment 2, where the apparatus includes:

the list sending module 21 is configured to send an EPLMN list to the terminal, where the EPLMN list carries a roaming PLMN of a visited network equivalent to a home PLMN of the home network, so that the terminal determines whether to delete the roaming PLMN in the EPLMN list according to capability information of the terminal and capability information of a pre-stored visited network, and deletes the roaming PLMN in the EPLMN list when the determination result is yes, and reserves the roaming PLMN in the EPLMN list when the determination result is no.

Optionally, the list sending module 21 specifically includes:

a roaming condition judging unit, configured to judge whether the terminal meets a core network roaming condition;

And the list sending unit is used for sending the EPLMN list to the terminal when the roaming condition judging unit judges that the roaming condition judging result is yes.

Optionally, the apparatus further comprises:

a request receiving module, configured to receive an attach request/registration request sent by the terminal, where the attach request/registration request carries registration information of the terminal, and the registration information includes: the position information of the terminal and/or the international mobile subscriber identity IMSI and/or the international mobile equipment identity IMEI and/or the international mobile subscriber integrated services digital network MSISDN;

the roaming condition judging unit is specifically configured to judge whether the terminal meets a core network roaming condition according to the location information, and/or IMSI, and/or IMEI, and/or MSISDN of the terminal.

Optionally, the list sending module 21 is specifically configured to send an attach accept message/registration accept message carrying the EPLMN list to the terminal.

Optionally, the attach accept message/register accept message further carries capability information of the visited network, and the apparatus further includes:

the capability acquisition module is used for acquiring capability information of the visiting network, wherein the capability information of the visiting network comprises new air interface voice VoNR capability and evolved packet circuit (EPS) fallback capability.

Example 5:

referring to fig. 6, the present embodiment provides a processing apparatus for a peer-to-peer public land mobile network EPLMN list in a core network roaming scenario, including a memory 31 and a processor 32, where the memory 31 stores a computer program, and the processor 32 is configured to execute the computer program to perform the processing method for the peer-to-peer public land mobile network EPLMN list in the core network roaming scenario in embodiment 1 or embodiment 2.

The memory 31 is connected to the processor 32, the memory 31 may be a flash memory, a read-only memory, or other memories, and the processor 32 may be a central processing unit or a single chip microcomputer.

Example 6:

the present embodiment provides a computer readable storage medium having a computer program stored thereon, where the computer program when executed by a processor implements the method for processing a peer-to-peer public land mobile network EPLMN list in a core network roaming scenario in the foregoing embodiment 1 or embodiment 2.

Computer-readable storage media include volatile or nonvolatile, removable or non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, computer program modules or other data. Computer-readable storage media includes, but is not limited to, RAM (Random Access Memory ), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory, charged erasable programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact Disc Read-Only Memory), digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.

The processing method, the device and the medium for the EPLMN list in the core network roaming scenario provided in embodiments 2 to 6, when the terminal receives the EPLMN list sent by the home network core network device, determine whether to delete the roaming PLMN in the EPLMN list according to the capability information of the terminal and the capability information of the pre-stored visited network, if yes, delete the roaming PLMN in the EPLMN list, thereby ensuring that when the terminal cannot use the voice service of the visited network, the terminal cannot roam under the visited network through reselection or redirection, reducing the frequent network selecting operation of the terminal, improving the user experience, if not, reserving the roaming PLMN in the EPLMN list, thereby ensuring that when the terminal can use the voice service of the visited network, the terminal can easily experience the situation that the voice service cannot be used through reselection or redirection to the visited 5G network after receiving the EPLMN list in the prior art, and severely affecting the user experience.

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.

Claims

1. The method for processing the EPLMN list of the peer-to-peer public land mobile network in the roaming scene of the core network is characterized by being applied to a terminal, and comprises the following steps:

receiving an EPLMN list sent by home network core network equipment, wherein the EPLMN list carries roaming PLMNs of a visiting network equivalent to a home public land mobile network PLMN of a home network;

if yes, deleting the roaming PLMN in the EPLMN list;

if not, reserving the roaming PLMN in the EPLMN list;

the determining whether the roaming PLMN in the EPLMN list needs to be deleted according to the capability information of the terminal and the pre-stored capability information of the visited network specifically includes:

2. The method of claim 1, wherein prior to receiving the EPLMN list sent by the home network core network device, the method further comprises:

3. The method according to claim 1, wherein before determining whether the roaming PLMN in the EPLMN list needs to be deleted according to the capability information of the terminal and the capability information of the pre-stored visited network, the method further comprises:

4. The method according to claim 1, wherein the determining whether the roaming PLMN in the EPLMN list needs to be deleted according to the new air-interface voice VoNR capability and/or evolved packet circuit switched (EPS FB) capability of the terminal and the VoNR capability and EPS FB capability of the visited network specifically includes at least one of:

5. The method of claim 4, wherein after the deleting the roaming PLMN in the EPLMN list, the method further comprises:

6. A method for processing an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network, the method being applied to a home network core network device, the method comprising:

and sending an EPLMN list to a terminal, wherein the EPLMN list carries roaming PLMNs of a visiting network equivalent to a home public land mobile network PLMN of the home network, so that the terminal judges whether the roaming PLMNs in the EPLMN list need to be deleted according to the self new air interface voice VoNR capability and/or evolved packet switched fallback EPS FB capability and the VoNR capability and EPS FB capability of the visiting network, and deletes the roaming PLMNs in the EPLMN list when the judging result is yes, and reserves the roaming PLMNs in the EPLMN list when the judging result is no.

7. The method according to claim 6, wherein the sending the EPLMN list to the terminal specifically includes:

if yes, the EPLMN list is sent to the terminal.

8. The method of claim 7, wherein before determining whether the terminal satisfies a core network roaming condition, the method further comprises:

9. The method according to claim 6, wherein the sending the EPLMN list to the terminal specifically includes:

10. The method of claim 9, wherein the attach accept message/registration accept message further carries capability information of the visited network, and wherein before sending the attach accept message/registration accept message carrying the EPLMN list to the terminal, the method further comprises:

11. A processing device of an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network, the processing device being configured to a terminal, the device comprising:

a list receiving module, configured to receive an EPLMN list sent by a home network core network device, where the EPLMN list carries a roaming PLMN of a visited network equivalent to a home public land mobile network PLMN of the home network;

The second processing module is connected with the deletion judging module and is used for reserving the roaming PLMN in the EPLMN list when the judgment result of the deletion judging module is negative;

the deletion judging module is specifically configured to judge whether the roaming PLMN in the EPLMN list needs to be deleted according to a new air interface voice VoNR capability and/or an evolved packet network fallback EPS FB capability of the terminal, and a VoNR capability and an EPS FB capability of a visited network.

12. A processing apparatus for an EPLMN list of a peer-to-peer public land mobile network in a roaming scenario of a core network, the apparatus being configured to a home network core network device, the apparatus comprising:

the list sending module is configured to send an EPLMN list to a terminal, where the EPLMN list carries a roaming PLMN of a visited network equivalent to a home public land mobile network PLMN of the home network, so that the terminal determines whether the roaming PLMN in the EPLMN list needs to be deleted according to a new air interface voice VoNR capability and/or an evolved packet circuit fallback EPS FB capability of the terminal and the VoNR capability and the EPS FB capability of the visited network, and if the determination result is yes, deletes the roaming PLMN in the EPLMN list, and if the determination result is no, reserves the roaming PLMN in the EPLMN list.

13. A processing device for a peer-to-peer public land mobile network EPLMN list in a core network roaming scenario, comprising a memory and a processor, the memory storing a computer program, the processor being arranged to run the computer program to implement a method for processing a peer-to-peer public land mobile network EPLMN list in a core network roaming scenario according to any of claims 1-5 or to implement a method for processing a peer-to-peer public land mobile network EPLMN list in a core network roaming scenario according to any of claims 6-10.

14. A computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when executed by a processor, the computer program implements a method for processing a peer-to-peer public land mobile network EPLMN list in a core network roaming scenario according to any one of claims 1-5, or implements a method for processing a peer-to-peer public land mobile network EPLMN list in a core network roaming scenario according to any one of claims 6-10.