CN114585077B

CN114585077B - Network registration method and device

Info

Publication number: CN114585077B
Application number: CN202210187934.5A
Authority: CN
Inventors: 吴丹
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2024-02-13
Anticipated expiration: 2042-02-28
Also published as: CN114585077A

Abstract

The disclosure provides a network registration method and device, wherein the method is applied to a user terminal and comprises the following steps: switching from the first park network to the second park network in case the IMS registration is not completed under the first park network; transmitting a TCP connection reset request to the network device under the second residential network; the TCP connection reset request is used for disconnecting a first TCP connection, and the first TCP connection is used for the UE to register the IMS on a first resident network; in response to the first TCP connection disconnection, sending a TCP connection establishment request to the network device under the second residential network, wherein the TCP connection establishment request is used for establishing a second TCP connection between the UE and the network device; an IMS registration request is sent to the network device over the second TCP connection under the second residential network. Therefore, the IMS fast registration of the UE under the second resident network is realized, so that the UE can acquire IMS service as fast as possible, and the user experience is improved.

Description

Network registration method and device

Technical Field

The disclosure relates to the technical field of electronic equipment, and in particular relates to a network registration method and device.

Background

Currently, a User Equipment (UE) performs IP multimedia system (IP Multimedia Subsystem, IMS) registration after network residence is completed, and after the IMS registration is completed, the UE obtains many services supported by the IMS, such as Voice over Long-Term-terminal (VoLTE), video Telephony (VT), short message service (Short Message Service, SMS), and the like.

However, when the UE switches from one resident network to another resident network, it needs to wait for the network device side to send a TCP connection reset request before re-registering the IMS, which results in a slow IMS registration, and during this time, the UE cannot use IMS services, which reduces the user experience.

Disclosure of Invention

The present disclosure aims to solve, at least to some extent, one of the technical problems in the related art.

For this reason, the present disclosure proposes the following technical scheme:

an embodiment of a first aspect of the present disclosure provides a network registration method, applied to a user terminal UE, including: under the condition that the IP multimedia system IMS registration of the network interconnection protocol is not completed under the first resident network, switching from the first resident network to the second resident network; transmitting a transmission control protocol, TCP, connection reset request to a network device under the second residential network; wherein the TCP connection reset request is for disconnecting a first TCP connection for the UE to register IMS on the first resident network; transmitting a TCP connection establishment request to the network device under the second resident network in response to the first TCP connection disconnection, wherein the TCP connection establishment request is used to establish a second TCP connection between the UE and the network device; and sending an IMS registration request to the network equipment under the second resident network through the second TCP connection.

An embodiment of a second aspect of the present disclosure provides a network registration method, applied to a network device, including: receiving a TCP connection reset request sent by User Equipment (UE); responding to the TCP connection reset request, and disconnecting the first TCP connection; wherein the first TCP connection is for the UE to register IMS on the first residential network; receiving a TCP connection establishment request sent by the UE under the second resident network; establishing a second TCP connection between the network device and the UE in response to the TCP connection establishment request; wherein the second TCP connection is configured to send an IMS registration request under the second residential network.

An embodiment of a third aspect of the present disclosure provides a network registration apparatus applied to a user terminal UE, including: a switching module, configured to switch from a first residence network to a second residence network in a case that IMS registration of the IP multimedia system is not completed under the first residence network; a first sending module, configured to send a transmission control protocol TCP connection reset request to a network device under the second residing network; wherein the TCP connection reset request is for disconnecting a first TCP connection for the UE to register IMS on the first resident network; a second sending module, configured to send a TCP connection establishment request to the network device under the second residing network in response to the first TCP connection being disconnected, where the TCP connection establishment request is used to establish a second TCP connection between the UE and the network device; and a third sending module, configured to send an IMS registration request to the network device under the second residing network through the second TCP connection.

An embodiment of a fourth aspect of the present disclosure provides a network registration apparatus, applied to a network device, including: the first receiving module is used for receiving a TCP connection reset request sent by User Equipment (UE); the disconnection module is used for responding to the TCP connection reset request and disconnecting the first TCP connection; wherein the first TCP connection is for the UE to register IMS on the first residential network; a second receiving module, configured to receive a TCP connection establishment request sent by the UE under the second residing network; the establishing module is used for responding to the TCP connection establishment request and establishing a second TCP connection between the network equipment and the UE; wherein the second TCP connection is configured to send an IMS registration request under the second residential network.

An embodiment of a fifth aspect of the present disclosure proposes a user terminal, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of the first aspect embodiment of the present disclosure.

Embodiments of a sixth aspect of the present disclosure provide a network device, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of embodiments of the second aspect of the present disclosure.

An embodiment of a seventh aspect of the present disclosure proposes a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor implements a method according to an embodiment of the first aspect of the present disclosure, or implements a method according to an embodiment of the second aspect of the present disclosure.

An eighth aspect embodiment of the present disclosure proposes a computer program product which, when executed by a processor, performs the method according to the first aspect embodiment of the present disclosure, or performs the method according to the second aspect embodiment of the present disclosure.

According to the technical scheme, a user terminal is switched from a first resident network to a second resident network under the condition that IMS registration is not completed under the first resident network; transmitting a TCP connection reset request to the network device under the second residential network; the TCP connection reset request is used for disconnecting a first TCP connection, and the first TCP connection is used for the UE to register the IMS on a first resident network; in response to the first TCP connection disconnection, sending a TCP connection establishment request to the network device under the second residential network, wherein the TCP connection establishment request is used for establishing a second TCP connection between the UE and the network device; and sending an IMS registration request to the network equipment under the second resident network through the second TCP connection, so that the user terminal actively sends a TCP connection reset request to the network equipment to disconnect the first TCP connection and reestablish the second TCP connection under the second resident network, thereby re-registering the IMS under the second resident network through the second TCP connection, shortening the time interval of the IMS re-registration, realizing IMS quick registration, enabling the UE to acquire IMS service as quickly as possible, and improving user experience.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a flowchart of a network registration method according to an embodiment of the disclosure;

fig. 2 is a flowchart of a network registration method according to another embodiment of the present disclosure;

fig. 3 is a flowchart of a network registration method according to another embodiment of the present disclosure;

fig. 4 is a flowchart of a network registration method according to an embodiment of the disclosure;

fig. 5 is a schematic structural diagram of a network registration device according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a network registration device according to an embodiment of the present disclosure;

fig. 7 is a block diagram of an electronic device, according to an example embodiment.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

IMS is a new form of multimedia service that can meet the needs of more novel and diversified multimedia services for end users. IMS is considered as a core technology of the next generation network, and is also an important way to solve the problem of integration of mobile and fixed networks and introduce differentiated services such as triple integration of voice, data and video. The VoLTE technology is one of the IMS important service technologies.

When the network mode of the ue is switched, for example, when the ue is switched from 3G priority to 5G priority, there is a phenomenon that: the UE first camps on a long term evolution (Long Term Evolution, abbreviated as LTE) network, then initiates an IMS registration request on the LTE network (IMS registration requires that a transmission control protocol (Transmission Control Protocol, abbreviated as TCP) connection be established between the UE and a network device (e.g., IMS network) and that a radio resource control (Radio Resource Control, abbreviated as RRC) connection be established between the UE and an access network device (e.g., a base station), and when the UE does not complete IMS registration on the LTE network, the core network requires the UE to return to a stand alone network (sta), and the UE receives an RRC release signaling sent by the core network, which results in termination of the IMS registration procedure on LTE. But at this point, the TCP connection is always present, and the presence or absence of the TCP connection depends on the network device side decision, and typically, after 30 seconds from the establishment of the TCP connection, the network (IMS network) sends a TCP connection reset request to the UE, so as to inform the UE that the TCP connection needs to be disconnected. When the UE detects that the TCP connection is disconnected, the UE may reinitiate the TCP connection request and send an IMS registration request over the reconnected TCP connection. Therefore, after the UE switches to the SA network, it must wait until the network device sends a TCP connection reset request to re-trigger the IMS registration procedure. Here, it takes thirty seconds to perform IMS re-registration, resulting in a phenomenon that IMS registration is slow, and during this time, the UE cannot use IMS services, degrading user experience.

Accordingly, in view of the above-mentioned problems, the present disclosure proposes a network registration method and apparatus.

The network registration method and apparatus of the embodiments of the present disclosure are described below with reference to the accompanying drawings.

Fig. 1 is a flowchart of a network registration method according to an embodiment of the disclosure. The network registration method is applied to the UE.

As shown in fig. 1, the network registration method may include the steps of:

step 101, switching from the first resident network to the second resident network in case the IMS registration is not completed under the first resident network.

In the embodiment of the disclosure, when the user terminal is switched in network mode, for example, when the user terminal is switched from a third resident network (such as a 3G network) to a first resident network (such as a 5G network), the user terminal can be firstly switched to the first resident network (such as an LTE network) for transition, when the user terminal is resident to the first resident network, an IMS registration request is sent to a network device (such as an IMS network) on the first resident network, and when the IMS registration is not completed under the first resident network, the user terminal is switched from the first resident network to the second resident network according to a resident network switching instruction.

Step 102, a TCP connection reset request is sent to a network device under a second resident network.

Wherein the TCP connection reset request is for disconnecting a first TCP connection for the UE to register the IMS on the first resident network.

In the embodiments of the present disclosure, after the user terminal is handed over from the first residing network to the second residing network, the user terminal may send a TCP connection reset request to the network device under the second residing network, where the TCP connection reset request may be used to disconnect the first TCP connection, and the first TCP connection may be used for the UE to send an IMS registration request to the network device on the first residing network to register the IMS on the first residing network.

Step 103, in response to the first TCP connection disconnection, sending a TCP connection setup request to the network device under the second resident network.

Wherein the TCP connection establishment request is for establishing a second TCP connection between the UE and the network device.

Further, when the UE detects that the first TCP connection is broken, a TCP connection establishment request is re-sent to the network device under the second resident network to establish a second TCP connection between the UE and the network device.

Step 104, sending an IMS registration request to the network device under the second residing network via the second TCP connection.

Further, the UE sends an IMS registration request to the network device over the second TCP connection under the second residential network to register the IMS on the second residential network.

In summary, the UE actively sends a TCP connection reset request to the network device to disconnect the first TCP connection and reestablish the second TCP connection under the second residing network, so that IMS is re-registered under the second residing network through the second TCP connection, thereby shortening the time interval for re-registering IMS, realizing fast IMS registration of the UE under the second residing network, enabling the UE to obtain IMS services as fast as possible, and improving user experience.

In order to quickly establish a second TCP connection with a network device when the first TCP connection is disconnected, as shown in fig. 2, fig. 2 is a flow chart of a network registration method according to another embodiment of the present disclosure, in an embodiment of the present disclosure, a TCP connection establishment request may be sent to the network device under a second residing network according to a response message sent by the network device, and the embodiment shown in fig. 2 may include the following steps:

in step 201, in case the IMS registration is not completed under the first residential network, a handover is made from the first residential network to the second residential network.

Step 202, a TCP connection reset request is sent to a network device under a second residential network.

And 203, receiving a response message sent by the network equipment, wherein the response message is used for indicating the disconnection of the first TCP connection.

In embodiments of the present disclosure, the UE sends a TCP connection reset request to the network device under the second resident network, the network device generating a response message in response to the TCP connection reset request, the response message indicating that the first TCP connection is broken.

Step 204, according to the response message, a TCP connection establishment request is sent to the network device under the second resident network.

Further, the UE sends a TCP connection establishment request to the network device under the second resident network according to the response message, the TCP connection establishment request being usable to establish a second TCP connection between the UE and the network device.

At step 205, an IMS registration request is sent to the network device over the second TCP connection under the second residential network.

It should be noted that, the execution process of steps 201 to 202 and step 205 may be implemented in any manner in each embodiment of the disclosure, which is not limited to this embodiment and is not repeated herein.

In summary, receiving a response message sent by the network device, where the response message is used to instruct the first TCP to disconnect; according to the response message, a TCP connection establishment request is sent to the network equipment under the second resident network, so that when the first TCP connection is disconnected, the UE can send the TCP connection establishment request to the network equipment under the second resident network according to the response message sent by the network equipment, and the second TCP connection is quickly established with the network equipment.

To clearly illustrate how a UE switches from a first camp-on network to a second camp-on network in the event that IMS registration is not completed under the first camp-on network, as shown in fig. 3, fig. 3 is a flow chart of a network registration method provided by another embodiment of the present disclosure, in the event that IMS registration is not completed under the first camp-on network, the UE switches from the first camp-on network to the second camp-on network according to the camp-on network sent by the core network. The embodiment shown in fig. 3 may include the following steps:

step 301, receiving a resident network switching instruction sent by a core network under the condition that the IMS registration is not completed under the first resident network.

In the embodiment of the disclosure, in the case that IMS registration is not completed under the first residing network, the core network sends a residing network switching instruction to the UE, and the UE receives the residing network switching instruction sent by the core network. In order to enable communication between the UE and the core network, when switching from the first residence network to the second residence network, the RRC connection with the access network device of the first residence network may be disconnected, and the RRC connection with the access network device of the second residence network may be established.

As an example, the first residential network may be an LTE network and the second residential network may be an SA network.

Step 302, switching from a first residing network to a second residing network in response to a residing network switching instruction.

Further, the UE switches from the first camped network to the second camped network in response to the camped network switch instruction.

Step 303, a TCP connection reset request is sent to the network device under the second residential network.

Wherein the TCP connection reset request is for disconnecting a first TCP connection for the UE to register IMS on the first residential network.

Step 304, in response to the first TCP connection disconnection, sends a TCP connection setup request to the network device under the second resident network.

Step 305, sending an IMS registration request to the network device under the second residential network over the second TCP connection.

In summary, receiving a resident network switching instruction sent by a core network under the condition that IMS registration is not completed under a first resident network; and switching from the first resident network to the second resident network in response to the resident network switching instruction, thereby switching the UE from the first resident network to the second resident network according to the resident network switching instruction sent by the core network.

The network registration method of the embodiment of the disclosure is applied to the UE, and is switched from a first resident network to a second resident network under the condition that IMS registration is not completed under the first resident network; transmitting a TCP connection reset request to the network device under the second residential network; the TCP connection reset request is used for disconnecting a first TCP connection, and the first TCP connection is used for the UE to register the IMS on a first resident network; in response to the first TCP connection disconnection, sending a TCP connection establishment request to the network device under the second residential network, wherein the TCP connection establishment request is used for establishing a second TCP connection between the UE and the network device; an IMS registration request is sent to the network device over the second TCP connection under the second residential network. Therefore, the UE actively sends a TCP connection reset request to the network equipment to disconnect the first TCP connection and reestablish the second TCP connection under the second resident network, so that the IMS is re-registered under the second resident network through the second TCP connection, the time interval of IMS re-registration is shortened, the IMS of the UE under the second resident network is quickly registered, the UE can acquire IMS service as soon as possible, and the user experience is improved.

In order to implement the above embodiment, the present disclosure also proposes another network registration method.

Fig. 4 is a flowchart of a network registration method according to an embodiment of the disclosure. Wherein the network registration method is applied to a network device (e.g., an IMS network).

As shown in fig. 4, the network registration method includes:

step 401, a TCP connection reset request sent by a user terminal UE is received.

In the disclosed embodiments, the UE switches from the first residential network to the second residential network in case the IMS registration is not completed under the first residential network, and the UE sends a transmission control protocol, TCP, connection reset request to the network device under the second residential network.

In step 402, in response to a TCP connection reset request, the first TCP connection is disconnected.

Wherein the first TCP connection is for the UE to register the IMS on the first residential network.

Further, the network device disconnects the first TCP connection with the UE in response to the TCP connection reset request, wherein the UE may send an IMS registration request to the network device over the first TCP connection to cause the UE to register with the IMS over the first resident network.

Step 403, receiving a TCP connection establishment request sent by the UE under the second resident network.

In embodiments of the present disclosure, the UE transmits a TCP connection establishment request to the network device under the second resident network in response to the first TCP connection disconnection, so that the network device may receive the TCP connection establishment request transmitted by the UE under the second resident network.

Step 404, in response to the TCP connection establishment request, a second TCP connection between the network device and the UE is established.

Wherein the second TCP connection is configured to send an IMS registration request under the second residential network.

Further, the network device establishes a second TCP connection with the UE in response to the TCP connection establishment request, and the UE may send an IMS registration request to the network device under the second residing network through the second TCP connection to cause the UE to register with the IMS under the second residing network.

The network registration method of the embodiment of the disclosure is applied to network equipment and is used for receiving a TCP connection reset request sent by User Equipment (UE); responding to a TCP connection reset request, and disconnecting the first TCP connection; wherein the first TCP connection is for the UE to register IMS on the first residential network; receiving a TCP connection establishment request sent by the UE under a second resident network; responding to a TCP connection establishment request, and establishing a second TCP connection between the network equipment and the UE; the network equipment receives a TCP connection reset request actively sent by the UE so as to disconnect the first TCP connection, and reestablishes the TCP connection with the UE in response to a TCP connection establishment request sent by the UE under the second resident network, so that the UE re-registers the IMS under the second resident network through the second TCP connection, the time interval for re-registering the IMS is shortened, the IMS of the UE under the second resident network is quickly registered, the UE can acquire IMS services as quickly as possible, and the user experience is improved.

In order to implement the embodiments of fig. 1 to 3 described above, the present disclosure further provides a network registration apparatus. Wherein the network registration apparatus is applicable to the UE.

Fig. 5 is a schematic structural diagram of a network registration device according to an embodiment of the disclosure.

As shown in fig. 5, the network registration apparatus 500 includes: a switching module 510, a first transmitting module 520, a second transmitting module 530, and a third transmitting module 540.

The switching module 510 is configured to switch from the first residing network to the second residing network when the IP multimedia system IMS registration is not completed under the first residing network; a first sending module 520, configured to send a transmission control protocol TCP connection reset request to a network device under a second residing network; the TCP connection reset request is used for disconnecting a first TCP connection, and the first TCP connection is used for the UE to register the IMS on a first resident network; a second sending module 530, configured to send a TCP connection establishment request to the network device under a second residing network in response to the first TCP connection being disconnected, where the TCP connection establishment request is used to establish a second TCP connection between the UE and the network device; a third sending module 540, configured to send an IMS registration request to the network device under the second residing network through the second TCP connection.

As one possible implementation manner of the embodiment of the present disclosure, the second sending module 530 is further configured to: receiving a response message sent by the network equipment, wherein the response message is used for indicating that the first TCP connection is disconnected; and sending a TCP connection establishment request to the network equipment under the second resident network according to the response message.

As one possible implementation of an embodiment of the disclosure, the switching module 510 is further configured to: receiving a resident network switching instruction sent by a core network under the condition that IMS registration is not completed under a first resident network; and switching from the first resident network to the second resident network in response to the resident network switching instruction.

As one possible implementation of the embodiment of the present disclosure, the network registration apparatus 500 further includes: the module is disconnected and the module is established.

The disconnection module is used for disconnecting the Radio Resource Control (RRC) connection with the access network equipment of the first resident network under the condition of switching from the first resident network to the second resident network; and the establishing module is used for establishing the RRC connection with the access network equipment of the second resident network.

As one possible implementation manner of the embodiments of the present disclosure, the first residing network is a long term evolution LTE network, and the second residing network is an independent networking SA network.

The network registration device of the embodiment of the disclosure is applied to UE, and is switched from a first resident network to a second resident network under the condition that IMS registration is not completed under the first resident network; transmitting a TCP connection reset request to the network device under the second residential network; the TCP connection reset request is used for disconnecting a first TCP connection, and the first TCP connection is used for the UE to register the IMS on a first resident network; in response to the first TCP connection disconnection, sending a TCP connection establishment request to the network device under the second residential network, wherein the TCP connection establishment request is used for establishing a second TCP connection between the UE and the network device; and sending an IMS registration request to the network equipment under the second resident network through the second TCP connection, so that the user terminal actively sends a TCP connection reset request to the network equipment to disconnect the first TCP connection and reestablish the second TCP connection under the second resident network, thereby re-registering the IMS under the second resident network through the second TCP connection, shortening the time interval of the IMS re-registration, realizing the IMS rapid registration of the UE under the second resident network, enabling the UE to acquire IMS service as soon as possible, and improving the user experience.

In order to implement the embodiment described in fig. 4, the disclosure also proposes another network registration device, which is applied to a network device.

Fig. 6 is a schematic structural diagram of a network registration device according to an embodiment of the present disclosure.

As shown in fig. 6, the network registration apparatus 600 includes: a first receiving module 610, a disconnecting module 620, a second receiving module 630, and a establishing module 640.

As one possible implementation manner of the embodiments of the present disclosure, a first receiving module 610 is configured to receive a TCP connection reset request sent by a user terminal UE; a disconnect module 620 for disconnecting the first TCP connection in response to a TCP connection reset request; wherein the first TCP connection is for the UE to register IMS on the first residential network; a second receiving module 630, configured to receive a TCP connection establishment request sent by the UE under a second residing network; an establishing module 640, configured to establish a second TCP connection between the network device and the UE in response to the TCP connection establishment request; wherein the second TCP connection is configured to send an IMS registration request under the second residential network.

The network registration device of the embodiment of the disclosure is applied to network equipment and is used for receiving a TCP connection reset request sent by User Equipment (UE); responding to a TCP connection reset request, and disconnecting the first TCP connection; wherein the first TCP connection is for the UE to register IMS on the first residential network; receiving a TCP connection establishment request sent by the UE under a second resident network; responding to a TCP connection establishment request, and establishing a second TCP connection between the network equipment and the UE; the network equipment receives a TCP connection reset request actively sent by the UE so as to disconnect the first TCP connection, and reestablishes the TCP connection with the UE in response to a TCP connection establishment request sent by the UE under the second resident network, so that the UE re-registers the IMS under the second resident network through the second TCP connection, the time interval for re-registering the IMS is shortened, the IMS of the UE under the second resident network is quickly registered, the UE can acquire IMS services as quickly as possible, and the user experience is improved.

In order to implement the above embodiment, the present disclosure further proposes a user terminal. The user terminal includes: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the methods described in the embodiments of fig. 1-3.

In order to implement the above embodiment, the present disclosure further proposes a network device. The network device includes: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method described in the embodiment of fig. 4.

To implement the above embodiments, the present disclosure also proposes a non-transitory computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the method described in the embodiment of fig. 1 to 3, or implements the method described in the embodiment of fig. 4.

To implement the above embodiments, the present disclosure also proposes a computer program product, which when executed by a processor, performs the method described in the embodiment of fig. 1 to 3, or performs the method described in the embodiment of fig. 4.

Fig. 7 is a block diagram of an electronic device, according to an example embodiment. The electronic device may include a user terminal and/or a network device, for example, the electronic device 700 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 7, a mobile device 700 may include one or more of the following components: a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input/output (I/O) interface 712, a sensor component 714, and a communication component 716.

The processing component 702 generally controls overall operation of the electronic device 700, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 702 may include one or more processors 720 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 702 can include one or more modules that facilitate interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702.

The memory 704 is configured to store various types of data to support operations at the electronic device 700. Examples of such data include instructions for any application or method operating on the electronic device 700, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 704 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power component 706 provides power to the various components of the electronic device 700. Power component 706 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for mobile device 700.

The multimedia component 708 includes a screen between the electronic device 700 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 708 includes a front-facing camera and/or a rear-facing camera. When the electronic device 700 is in an operational mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 710 is configured to output and/or input audio signals. For example, the audio component 710 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 704 or transmitted via the communication component 716. In some embodiments, the audio component 710 further includes a speaker for outputting audio signals.

The I/O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 714 includes one or more sensors for providing status assessment of various aspects of the electronic device 700. For example, the sensor assembly 714 may detect an on/off state of the electronic device 700, a relative positioning of the components, such as a display and keypad of the electronic device 700, a change in position of the electronic device 700 or a component of the electronic device 700, the presence or absence of a user's contact with the electronic device 700, an orientation or acceleration/deceleration of the electronic device 700, and a change in temperature of the electronic device 700. The sensor assembly 714 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 714 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 716 is configured to facilitate communication between the electronic device 700 and other devices, either wired or wireless. The electronic device 700 may access a wireless network based on a communication standard, such as WiFi,4G, or 5G, or a combination thereof. In one exemplary embodiment, the communication component 716 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 716 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the electronic device 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 704, including instructions executable by processor 720 of electronic device 700 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless explicitly specified otherwise.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present disclosure in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present disclosure.

Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As with the other embodiments, if implemented in hardware, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.

Furthermore, each functional unit in the embodiments of the present disclosure may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.

The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. Although embodiments of the present disclosure have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the present disclosure, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the present disclosure.

Claims

1. A network registration method, applied to a user terminal UE, comprising:

switching from the first resident network to the second resident network under the condition that the IMS registration of the IP multimedia system is not completed under the first resident network; the first resident network is a Long Term Evolution (LTE) network, and the second resident network is an independent networking (SA) network;

transmitting a transmission control protocol, TCP, connection reset request to a network device under the second residential network; wherein the TCP connection reset request is for disconnecting a first TCP connection for the UE to register IMS on the first resident network;

transmitting a TCP connection establishment request to the network device under the second resident network in response to the first TCP connection disconnection, wherein the TCP connection establishment request is used to establish a second TCP connection between the UE and the network device;

Transmitting an IMS registration request to the network device under the second residential network over the second TCP connection;

wherein the switching from the first resident network to the second resident network under the condition that the IMS registration is not completed under the first resident network comprises the following steps:

receiving a resident network switching instruction sent by a core network under the condition that IMS registration is not completed under a first resident network;

and responding to the resident network switching instruction, and switching from the first resident network to the second resident network.

2. The method of claim 1, wherein the sending a TCP connection establishment request to the network device under the second residing network in response to the first TCP connection being broken comprises:

receiving a response message sent by the network equipment, wherein the response message is used for indicating that the first TCP connection is disconnected;

and sending a TCP connection establishment request to the network equipment under the second resident network according to the response message.

3. The method according to claim 1, characterized in that the method further comprises:

disconnecting a radio resource control, RRC, connection with an access network device of the first residential network in case of a handover from the first residential network to the second residential network;

Establishing an RRC connection with an access network device of the second residential network.

4. A network registration method, applied to a network device, comprising:

receiving a TCP connection reset request sent by User Equipment (UE), and under the condition that IMS registration is not completed under a first resident network, receiving a resident network switching instruction sent by a core network by the User Equipment (UE), and switching from the first resident network to a second resident network;

responding to the TCP connection reset request, and disconnecting the first TCP connection; wherein the first TCP connection is for the UE to register IMS on the first residential network;

receiving a TCP connection establishment request sent by the UE under the second resident network; the first resident network is a Long Term Evolution (LTE) network, and the second resident network is an independent networking (SA) network;

establishing a second TCP connection between the network device and the UE in response to the TCP connection establishment request; wherein the second TCP connection is configured to send an IMS registration request under the second residential network.

5. A network registration apparatus, applied to a user terminal UE, comprising:

a switching module, configured to switch from a first residence network to a second residence network in a case that IMS registration of the IP multimedia system is not completed under the first residence network; the first resident network is a Long Term Evolution (LTE) network, and the second resident network is an independent networking (SA) network;

A first sending module, configured to send a transmission control protocol TCP connection reset request to a network device under the second residing network; wherein the TCP connection reset request is for disconnecting a first TCP connection for the UE to register IMS on the first resident network;

a second sending module, configured to send a TCP connection establishment request to the network device under the second residing network in response to the first TCP connection being disconnected, where the TCP connection establishment request is used to establish a second TCP connection between the UE and the network device;

a third sending module, configured to send an IMS registration request to the network device under the second residing network through the second TCP connection;

the switching module is further configured to:

6. The apparatus of claim 5, wherein the second transmitting module is further configured to:

7. The apparatus of claim 5, wherein the apparatus further comprises:

a disconnection module, configured to disconnect a radio resource control RRC connection with an access network device of the first residing network in a case of switching from the first residing network to the second residing network;

and the establishing module is used for establishing RRC connection with the access network equipment of the second resident network.

8. A network registration apparatus, characterized by being applied to a network device, comprising:

the first receiving module is used for receiving a TCP connection reset request sent by the user terminal UE, and the user terminal UE receives a resident network switching instruction sent by the core network and switches from the first resident network to the second resident network under the condition that IMS registration is not completed under the first resident network;

the disconnection module is used for responding to the TCP connection reset request and disconnecting the first TCP connection; wherein the first TCP connection is for the UE to register IMS on the first residential network;

a second receiving module, configured to receive a TCP connection establishment request sent by the UE under the second residing network; the first resident network is a Long Term Evolution (LTE) network, and the second resident network is an independent networking (SA) network;

The establishing module is used for responding to the TCP connection establishment request and establishing a second TCP connection between the network equipment and the UE; wherein the second TCP connection is configured to send an IMS registration request under the second residential network.

9. A user terminal, comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-3.

10. A network device, comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of claim 4.

11. A non-transitory computer readable storage medium, on which a computer program is stored, characterized in that the program, when executed by a processor, implements the method according to any one of claims 1-3 or the method according to claim 4.