CN114585077A

CN114585077A - Network registration method and device

Info

Publication number: CN114585077A
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: 2022-06-03
Anticipated expiration: 2042-02-28
Also published as: CN114585077B

Abstract

The disclosure provides a network registration method and a device, wherein the method is applied to a user terminal and comprises the following steps: under the condition that IMS registration is not completed in the first resident network, switching from the first resident network to the second resident network; sending a TCP connection reset request to the network device under the second resident network; wherein the TCP connection reset request is used to disconnect a first TCP connection, the first TCP connection being used for the UE to register the IMS on the first residential network; in response to the disconnection of the first TCP connection, sending a TCP connection establishment request to the network equipment 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 equipment; an IMS registration request is sent to the network device under the second residential network over the second TCP connection. Therefore, IMS quick registration of the UE in the second resident network is realized, the UE can obtain IMS service as quickly as possible, and user experience is improved.

Description

Network registration method and device

Technical Field

The present disclosure relates to the field of electronic devices, and in particular, to a network registration method and apparatus.

Background

Currently, after a User Equipment (UE) completes network residence, an IP Multimedia System (IMS) registration is performed, and when the IMS registration is completed, the User Equipment obtains many services supported by the IMS, such as Voice over Long-Term Evolution (VoLTE), Video Telephony (VT), Short Message Service (SMS), and the like.

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

Disclosure of Invention

The present disclosure is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the following technical scheme is provided in the disclosure:

an embodiment of a first aspect of the present disclosure provides a network registration method, applied to a user equipment UE, including: under the condition that the IMS registration of the IP multimedia system is not completed in the first resident network, switching from the first resident network to a second resident network; sending a Transmission Control Protocol (TCP) connection reset request to the network equipment under the second resident network; wherein the TCP connection reset request is for disconnecting a first TCP connection for the UE to register for IMS on the first residential network; in response to the first TCP connection being disconnected, sending a TCP connection establishment request to the network device under the second residential network, wherein the TCP connection establishment request is used to establish a second TCP connection between the UE and the network device; sending an IMS registration request to the network device under the second residential network over 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 resetting request sent by User Equipment (UE); disconnecting the first TCP connection in response to the TCP connection reset request; wherein the first TCP connection is for the UE to register for 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 used 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 equipment UE, including: the switching module is used for switching from the first residing network to the second residing network under the condition that the IMS registration of the IP multimedia system is not completed in the first residing network; a first sending module, configured to send a TCP connection reset request to a network device in the second residential network; wherein the TCP connection reset request is for disconnecting a first TCP connection for the UE to register for IMS on the first residential network; a second sending module, configured to send a TCP connection establishment request to the network device 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 over the second persistent 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: a first receiving module, configured to receive a TCP connection reset request sent by a user equipment UE; a disconnection module for disconnecting the first TCP connection in response to the TCP connection reset request; wherein the first TCP connection is for the UE to register for IMS on the first residential network; a second receiving module, configured to receive a TCP connection establishment request sent by the UE in the second residential network; an establishing module, 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 used to send an IMS registration request under the second residential network.

An embodiment of a fifth aspect of the present disclosure provides 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 of the present disclosure.

An embodiment of a sixth aspect of the present disclosure provides 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 the second aspect of the disclosure.

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

An eighth aspect of the present disclosure provides a computer program product, wherein instructions of the computer program product, when executed by a processor, perform the method of the first aspect of the present disclosure, or perform the method of the second aspect of the present disclosure.

According to the technical scheme, the user terminal is switched from the first resident network to the second resident network under the condition that IMS registration is not completed in the first resident network; sending a TCP connection reset request to the network device under the second resident network; wherein the TCP connection reset request is used to disconnect a first TCP connection, the first TCP connection being used for the UE to register the IMS on the first residential network; in response to the disconnection of the first TCP connection, sending a TCP connection establishment request to the network equipment 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 equipment; 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 resetting request to the network equipment to disconnect the first TCP connection and reestablish the second TCP connection under the second resident network, and thus the IMS is re-registered under the second resident network through the second TCP connection, the time interval of the IMS re-registration is shortened, the IMS fast registration is realized, the UE obtains the IMS service as fast as possible, and the user experience is improved.

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 present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

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

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

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

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

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

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

FIG. 7 is a block diagram illustrating an electronic device in accordance with an example embodiment.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

IMS is a new form of multimedia service that can meet the demands of more innovative and diverse multimedia services for end-users. The IMS is considered as a core technology of a next-generation network, and is also an important way to solve the convergence of mobile and fixed networks and introduce differentiated services such as triple convergence of voice, data, and video. Among them, VoLTE technology is one of 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: the UE first resides in a Long Term Evolution (LTE) network, then initiates an IMS registration request on the LTE network (before IMS registration, it is necessary to establish a Transmission Control Protocol (TCP) connection between the UE and a network device (e.g., an IMS network) and establish a Radio Resource Control (RRC) connection between the UE and an access network device (e.g., a base station)), when the UE does not complete IMS registration on the LTE network, the core network requests the UE to return to an independent network (standard, SA) network, and the UE receives an LTE RRC release signaling sent by the core network, which causes the UE to terminate the IMS registration process on LTE. However, at this time, the TCP connection always exists, and whether the TCP connection exists or not depends on the decision of the network device side, and generally, the network (IMS network) sends a TCP connection reset request to the UE after 30 seconds from the establishment of the TCP connection, 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 can reinitiate the TCP connection request and send an IMS registration request through the reconnected TCP connection. Therefore, after the UE switches to the SA network, the IMS registration procedure must not be triggered again until the network device sends a TCP connection reset request. Here, thirty seconds are wasted for re-registration of the IMS, which results in a slow IMS registration, and during this time, the UE cannot use the IMS service, which reduces the user experience.

Therefore, in order to solve the above problem, the present disclosure provides a network registration method and apparatus.

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

Fig. 1 is a flowchart illustrating a network registration method according to an embodiment of the present disclosure. Wherein, the network registration method is applied to the UE.

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

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

In the embodiment of the present disclosure, when the network mode of the user terminal is switched, for example, when the user terminal is switched from a third residing network (e.g., a 3G network) to a first residing network (e.g., a 5G network), the user terminal may first switch to the first residing network (e.g., an LTE network) to perform a transition, when the user terminal resides in the first residing network, the user terminal may send an IMS registration request to a network device (e.g., an IMS network) on the first residing network, and when the IMS registration is not completed in the first residing network, the user terminal switches from the first residing network to a second residing network according to the residing network switching instruction.

Step 102, sending a TCP connection reset request to the network device under the second residential network.

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

In the embodiment of the present disclosure, after the user terminal is switched from the first residential network to the second residential network, the user terminal may send a TCP connection reset request to the network device under the second residential 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 residential network, so as to register IMS on the first residential network.

Step 103, in response to the disconnection of the first TCP connection, sending a TCP connection establishment request to the network device under the second residential network.

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

And further, when the UE detects that the first TCP connection is disconnected, the UE resends a TCP connection establishment request to the network equipment under the second resident network so as to establish a second TCP connection between the UE and the network equipment.

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

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

In summary, the user terminal actively sends a TCP connection reset request to the network device to disconnect the first TCP connection, and reestablish the second TCP connection in the second persistent network, so that the IMS is re-registered in the second persistent network through the second TCP connection, the time interval of IMS re-registration is shortened, the IMS fast registration in the second persistent network is implemented, the UE obtains IMS services as fast as possible, and the user experience is improved.

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

step 201, under the condition that the IMS registration is not completed in the first resident network, switching from the first resident network to the second resident network.

Step 202, sending a TCP connection reset request to the network device under the second residential network.

Step 203, receiving a response message sent by the network device, where the response message is used to indicate that the first TCP connection is disconnected.

In the disclosed embodiment, the UE sends a TCP connection reset request to the network device in the second residential network, and the network device generates a response message in response to the TCP connection reset request, where the response message may indicate that the first TCP connection is disconnected.

And step 204, according to the response message, sending a TCP connection establishment request to the network equipment under the second resident network.

Further, the UE sends a TCP connection establishment request to the network device under the second residential network according to the response message, wherein the TCP connection establishment request can be used for establishing a second TCP connection between the UE and the network device.

Step 205, sending an IMS registration request to the network device under the second residential network through the second TCP connection.

It should be noted that the execution processes of steps 201 to 202 and step 205 may be implemented by any one of the embodiments of the present disclosure, and the embodiments of the present disclosure do not limit this, and are not described again.

In summary, a response message sent by the network device is received, where the response message is used to indicate that the first TCP connection is disconnected; and sending a TCP connection establishment request to the network equipment in the second resident network according to the response message, so that when the first TCP connection is disconnected, the UE can send the TCP connection establishment request to the network equipment in the second resident network according to the response message sent by the network equipment, and quickly establish the second TCP connection with the network equipment.

To clearly illustrate how the UE switches from the first residing network to the second residing network when the IMS registration is not completed in the first residing network, as shown in fig. 3, fig. 3 is a flowchart of a network registration method provided in another embodiment of the present disclosure. The embodiment shown in fig. 3 may include the following steps:

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

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

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

And step 302, responding to the resident network switching instruction, and switching from the first resident network to the second resident network.

In turn, the UE switches from the first camping network to the second camping network in response to the camping network switching instruction.

Step 303, sending a TCP connection reset request 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 for IMS on the first residential network.

Step 304, in response to the first TCP connection being disconnected, sending a TCP connection establishment request to the network device under the second residential network.

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

To sum up, receiving a resident network switching instruction sent by a core network under the condition that IMS registration is not completed in a first resident network; and responding to the resident network switching instruction, and switching from the first resident network to the second resident network, so that the UE is switched 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 UE, and switches from a first residing network to a second residing network by the condition that IMS registration is not completed under the first residing network; sending a TCP connection reset request to the network device under the second resident network; wherein the TCP connection reset request is used to disconnect a first TCP connection, the first TCP connection being used for the UE to register the IMS on the first residential network; in response to the disconnection of the first TCP connection, sending a TCP connection establishment request to the network equipment 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 equipment; sending an IMS registration request to the network device under a second residential network over a second TCP connection. Therefore, the UE actively sends a TCP connection resetting 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 re-registration of the IMS is shortened, the IMS fast registration of the UE under the second resident network is realized, the UE can obtain the IMS service as fast as possible, and the user experience is improved.

In order to implement the above embodiments, the present disclosure also provides another network registration method.

Fig. 4 is a flowchart illustrating a network registration method according to an embodiment of the disclosure. The network registration method is applied to network equipment (such as an IMS network).

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

step 401, receiving a TCP connection reset request sent by a user equipment UE.

In the embodiment of the present disclosure, the UE switches from the first residential network to the second residential network when the IMS registration is not completed in the first residential network, and the UE sends a TCP connection reset request to the network device in the second residential network.

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

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

Furthermore, the network device disconnects a first TCP connection with the UE in response to the TCP connection reset request, wherein the UE can send an IMS registration request to the network device on the first residential network through the first TCP connection, so that the UE registers IMS on the first residential network.

And step 403, receiving a TCP connection establishment request sent by the UE in the second residential network.

In the embodiment of the disclosure, the UE sends a TCP connection establishment request to the network device in the second residential network in response to the first TCP connection being disconnected, so that the network device can receive the TCP connection establishment request sent by the UE in the second residential network.

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

Wherein the second TCP connection is for sending an IMS registration request under the second residential network.

Further, the network device may establish 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 through the second TCP connection in the second residential network, so that the UE registers for IMS in the second residential network.

The network registration method of the embodiment of the disclosure is applied to network equipment, and receives a TCP connection reset request sent by User Equipment (UE); disconnecting the first TCP connection in response to the TCP connection reset request; wherein the first TCP connection is used for the UE to register IMS on the first resident network; receiving a TCP connection establishment request sent by the UE under the second resident network; responding to the TCP connection establishment request, and establishing a second TCP connection between the network equipment and the UE; the second TCP connection is used for sending an IMS registration request in the second resident network, so that the network equipment receives a TCP connection resetting request actively sent by the UE to disconnect the first TCP connection, and reestablishes the TCP connection with the UE in response to a TCP connection establishing request sent by the UE in the second resident network, so that the UE can be connected with the second TCP to re-register the IMS in the second resident network, the time interval of IMS re-registration is shortened, IMS fast registration of the UE in the second resident network is realized, the UE can obtain IMS service as fast as possible, and user experience is improved.

In order to implement the embodiments of fig. 1 to 3, the present disclosure further provides a network registration apparatus. Wherein, the network registration device can be applied to the UE.

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

As shown in fig. 5, the network registration apparatus 500 includes: a switching module 510, a first sending module 520, a second sending module 530, and a third sending 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 in the first residing network; a first sending module 520, configured to send a TCP connection reset request to the network device in the second residential network; wherein the TCP connection reset request is used to disconnect a first TCP connection, the first TCP connection being used for the UE to register the IMS on the first residential network; a second sending module 530, configured to send a TCP connection establishment request to the network device 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 the IMS registration request to the network device under the second residential network through the second TCP connection.

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

As a possible implementation manner of the embodiment of the present 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 in a first resident network; and responding to the resident network switching instruction, and switching from the first resident network to the second resident network.

As a possible implementation manner of the embodiment of the present disclosure, the network registration apparatus 500 further includes: a disconnection module and a setup module.

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 RRC connection with the access network equipment of the second resident network.

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

The network registration device of the embodiment of the disclosure is applied to UE, and switches from a first residing network to a second residing network by the condition that IMS registration is not completed under the first residing network; sending a TCP connection reset request to the network device under the second resident network; wherein the TCP connection reset request is used to disconnect a first TCP connection, the first TCP connection being used for the UE to register the IMS on the first residential network; in response to the disconnection of the first TCP connection, sending a TCP connection establishment request to the network equipment 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 equipment; 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 resetting request to the network equipment to disconnect the first TCP connection and reestablish the second TCP connection under the second resident network, and thus the IMS is re-registered under the second resident network through the second TCP connection, the time interval of the IMS re-registration is shortened, the IMS fast registration of the UE under the second resident network is realized, the UE can obtain the IMS service as fast as possible, and the user experience is improved.

In order to implement the embodiment shown in fig. 4, the present disclosure further provides another network registration apparatus, which is applied to a network device.

Fig. 6 is a schematic structural diagram of a network registration apparatus 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 disconnection module 620, a second receiving module 630, and a setup module 640.

As a possible implementation manner of the embodiment of the present disclosure, the first receiving module 610 is configured to receive a TCP connection reset request sent by a user equipment UE; a disconnection module 620 for disconnecting the first TCP connection in response to the TCP connection reset request; wherein the first TCP connection is used for the UE to register IMS on the first resident network; a second receiving module 630, configured to receive a TCP connection establishment request sent by the UE in the second residential 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 used 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 receives a TCP connection reset request sent by User Equipment (UE); disconnecting the first TCP connection in response to the TCP connection reset request; wherein the first TCP connection is used for the UE to register IMS on the first resident network; receiving a TCP connection establishment request sent by the UE under the second resident network; responding to the TCP connection establishment request, and establishing a second TCP connection between the network equipment and the UE; the second TCP connection is used for sending an IMS registration request in the second resident network, so that the network equipment receives a TCP connection resetting request actively sent by the UE to disconnect the first TCP connection, and reestablishes the TCP connection with the UE in response to a TCP connection establishing request sent by the UE in the second resident network, so that the UE can be connected with the second TCP to re-register the IMS in the second resident network, the time interval of IMS re-registration is shortened, IMS fast registration of the UE in the second resident network is realized, the UE can obtain IMS services as fast as possible, and user experience is improved.

In order to implement the above embodiment, the present disclosure further provides 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 method of the embodiment of fig. 1-3.

In order to implement the above embodiments, the present disclosure further provides 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 of the embodiment of fig. 4.

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

FIG. 7 is a block diagram illustrating an electronic device in accordance with an example embodiment. The electronic device may comprise 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, 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 components 702 may include one or more processors 720 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 702 may 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 non-volatile 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 disks.

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

The multimedia component 708 includes a screen that provides an output interface between the electronic device 700 and a user. 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 an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect 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. The front camera and/or the rear camera may receive external multimedia data when the electronic device 700 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

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 signal may further be stored in the memory 704 or transmitted via the communication component 716. In some embodiments, audio component 710 also 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 keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 714 includes one or more sensors for providing various aspects of status assessment for the electronic device 700. For example, the sensor assembly 714 may detect an open/closed state of the electronic device 700, the relative positioning of components, such as a display and keypad of the electronic device 700, the sensor assembly 714 may also detect a change in the position of the electronic device 700 or a component of the electronic device 700, the presence or absence of user contact with the electronic device 700, orientation or acceleration/deceleration of the electronic device 700, and a change in the temperature of the electronic device 700. The sensor assembly 714 may include a proximity sensor configured to detect the presence of nearby objects in the absence of 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 gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 716 is configured to facilitate wired or wireless communication between the electronic device 700 and other devices. 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 an exemplary embodiment, the communication component 716 receives a broadcast signal 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, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

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

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited 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 steps of a custom logic function or process, and alternate 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.

The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement 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). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can 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 embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

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

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present disclosure.

Claims

1. A network registration method is applied to a User Equipment (UE), and comprises the following steps:

under the condition that the IMS registration of the IP multimedia system is not completed in the first resident network, switching from the first resident network to a second resident network;

sending 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 for IMS on the first residential network;

in response to the first TCP connection being disconnected, sending a TCP connection establishment request to the network device under the second residential network, wherein the TCP connection establishment request is used to establish a second TCP connection between the UE and the network device;

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

2. The method according to claim 1, wherein said sending a TCP connection establishment request to said network device under said second residential network in response to said first TCP connection disconnection 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 of claim 1, wherein the switching from the first camped network to the second camped network without completing the IMS registration under the first camped network comprises:

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

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

4. The method of claim 1, further comprising:

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

establishing an RRC connection with an access network device of the second camped network.

5. The method according to any of claims 1-4, wherein the first dwell network is a Long term evolution, LTE, network and the second dwell network is an independent networking, SA, network.

6. A network registration method is applied to a network device and comprises the following steps:

receiving a TCP connection resetting request sent by User Equipment (UE);

disconnecting the first TCP connection in response to the TCP connection reset request; wherein the first TCP connection is for the UE to register for IMS on the first residential network;

receiving a TCP connection establishment request sent by the UE under the second residing 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 used to send an IMS registration request under the second residential network.

7. A network registration apparatus, applied to a User Equipment (UE), includes:

the switching module is used for switching from the first residing network to the second residing network under the condition that the IMS registration of the IP multimedia system is not completed in the first residing network;

a first sending module, configured to send a TCP connection reset request to a network device in the second residential network; wherein the TCP connection reset request is for disconnecting a first TCP connection for the UE to register for IMS on the first residential network;

a second sending module, configured to send a TCP connection establishment request to the network device 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 over the second persistent network through the second TCP connection.

8. The apparatus of claim 7, wherein the second sending module is further configured to:

9. The apparatus of claim 7, wherein the switching module is further configured to:

10. The apparatus of claim 7, further comprising:

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

an establishing module, configured to establish an RRC connection with the access network device of the second residential network.

11. The method according to any of claims 7-10, wherein the first dwell network is a long term evolution, LTE, network and the second dwell network is an independent networking, SA, network.

12. A network registration apparatus, applied to a network device, includes:

a first receiving module, configured to receive a TCP connection reset request sent by a user equipment UE;

a disconnection module for disconnecting the first TCP connection in response to the TCP connection reset request; wherein the first TCP connection is for the UE to register for IMS on the first residential network;

a second receiving module, configured to receive a TCP connection establishment request sent by the UE in the second residential network;

an establishing module, 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 used to send an IMS registration request under the second residential network.

13. A user terminal, comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

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 1-5.

14. A network device, comprising:

at least one processor; and

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of claim 6.

15. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the method of any one of claims 1-5, or implements the method of claim 6.