CN111698772B

CN111698772B - Registration method and device of 5G system, storage medium and terminal

Info

Publication number: CN111698772B
Application number: CN202010426501.1A
Authority: CN
Inventors: 朱中华; 程滨
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2023-08-15
Anticipated expiration: 2040-05-19
Also published as: CN111698772A

Abstract

The embodiment of the application discloses a registration method, a registration device, a storage medium and a registration terminal of a 5G system, and belongs to the technical field of computers. The method is applied to a terminal in a non-independent networking NSA mode, the terminal initiates a VoLTE call flow under a 5G system, the terminal registers to the 5G system through the NSA mode, when the VoLTE call flow is determined to fail in calling, the terminal disconnects the 5G system, and initiates a circuit domain call flow through a CSFB flow, when the circuit domain call flow is completed, pre-stored 5G registration information is acquired, and the terminal re-registers to the 5G system based on the 5G registration information, so that the terminal can quickly re-establish the 5G system connection, the registration time of the 5G system is saved, and the communication experience of a user is improved.

Description

Registration method and device of 5G system, storage medium and terminal

Technical Field

The present application relates to the field of computer technologies, and in particular, to a registration method and apparatus for a 5G system, a storage medium, and a terminal.

Background

With the development of 5G (5 th generation mobile networks, fifth generation mobile communication technology), the coverage of 5G networks is more and more extensive, and at present, two types of 5G network modes mainly exist: the non-independent networking NSA mode and the independent networking SA mode, the 5G network in the NSA mode needs to rely on the LTE network to complete 5G service transmission, and meanwhile, more mature and stable VoLTE voice service can be performed in the NSA mode. In the related art, when a terminal cannot successfully initiate a VoLTE call flow under an LTE network that does not support a VoLTE voice service, the current 5G network needs to be switched to a 2G network or a 3G network, and after the circuit domain call flow is completed through the 2G network or the 3G network, the terminal needs to search for and register the 5G network again, so that the time for reestablishing the 5G network connection by the terminal is long, and bad communication experience is caused to a user.

Disclosure of Invention

The embodiment of the application provides a registration method, a registration device, a storage medium and a terminal of a 5G system, which can solve the problem that the time for registering a 5G network again by the terminal is long, and poor communication experience is caused for a user. The technical scheme is as follows:

in a first aspect, an embodiment of the present application provides a method for registering a 5G system, where the method applies a terminal supporting a NSA mode of a non-independent networking, and the method includes:

the terminal initiates a VoLTE call flow under a 5G system; wherein the terminal registers to the 5G system through NSA mode;

disconnecting the 5G system when determining that the VoLTE call flow fails, and initiating a circuit domain call flow through a CSFB flow;

and when the circuit domain call flow is completed, acquiring prestored 5G registration information, and re-registering to the 5G system based on the 5G registration information.

In a second aspect, an embodiment of the present application provides a registration apparatus for a 5G system, where the apparatus is applied to a terminal supporting a non-independent networking NSA mode, and the apparatus includes:

the calling module is used for the terminal to initiate a VoLTE call flow under the 5G system; the terminal registers to a 5G system through an NSA mode;

The processing module is used for disconnecting the 5G system and initiating a circuit domain call flow through a CSFB flow when determining that the VoLTE call flow fails in calling;

and the registration module is used for acquiring prestored 5G registration information and re-registering to a 5G system based on the 5G registration information when the circuit domain call flow is completed.

In a third aspect, embodiments of the present application provide a computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the above-described method steps.

In a fourth aspect, an embodiment of the present application provides a terminal, including: the device comprises a processor, a memory and a display screen; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the above-mentioned method steps.

The technical scheme provided by the embodiments of the application has the beneficial effects that at least:

when the scheme of the embodiment of the application is executed, the terminal initiates a VoLTE call flow under the 5G system, the terminal registers to the 5G system through NSA mode, when the VoLTE call flow is determined to fail in calling, the terminal disconnects the 5G system, and initiates a circuit domain call flow through CSFB flow, when the circuit domain call flow is completed, pre-stored 5G registration information is acquired, and the terminal re-registers to the 5G system based on the 5G registration information, so that the terminal can quickly reestablish the 5G system connection, the registration time of the 5G system is saved, and the communication experience of a user is improved.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a communication system architecture according to the present application;

fig. 2 is a flow chart of a registration method of a 5G system according to an embodiment of the present application;

fig. 3 is another flow chart of a registration method of a 5G system according to an embodiment of the present application;

fig. 4 is another flow chart of a registration method of a 5G system according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a registration method of a 5G system according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the following detailed description of the embodiments of the present application will be given with reference to the accompanying drawings.

When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application as detailed in the accompanying claims.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Fig. 1 is a schematic diagram of a communication system architecture according to the present application.

Referring to fig. 1, the communication system includes a terminal 100, an LTE base station 110, an NR base station 120, a core network 130, a 3G base station 140, and a 2G base station 150.LTE base station 110 may provide 4G network radio access for one or more terminals 100 within a coverage area, enabling inter-communication between user terminals; NR base station 120 may provide 5G network wireless access to one or more terminals 100 within coverage to enable inter-communication between user terminals; the method comprises the steps of carrying out a first treatment on the surface of the The 3G base station 140 may provide wireless access to a 3G network for one or more terminals 100 within a coverage area, so that the user terminals can communicate with each other; the 2G base station 150 may provide wireless access to a 2G network for one or more terminals 100 within a coverage area to enable inter-communication between the user terminals. When the terminal performs voice call, voLTE voice call can be performed through a non-independent networking NSA mode, wherein the NSA mode is a dual-connection network mode of a 4G wireless access network and a 5G NR, namely a new wireless dual-connection architecture of the 4G LTE and the 5G NR of the non-independent networking: in NSA mode, the UE establishes a connection with the 4G core network while using radio resources of at least two different base stations (a 4G base station being a master station and a 5G NR base station being a slave station), transmitting signaling by means of the 4G core network, the 4G base station or the 5G NR base station transmitting data traffic. In NSA mode, the 5G NR base station is accessed to a 4G core network, and transmits signaling through the 4G core network, and the 4G base station or the 5G NR base station transmits data service; in NSA mode of the terminal, the operator may share a 4G core network with both 4G and 5G. NSA mode is a transitional networking mode in the early stages of 5G construction. When the terminal cannot complete the VoLTE voice call through the non-independent networking NSA mode, the terminal disconnects the 5G network, drops back to the circuit domain through the CSFB procedure, registers to the 3G network through the 3G base station 140, initiates the circuit domain call procedure based on the 3G network, or registers to the 2G network through the 2G base station 150, and initiates the circuit domain call procedure based on the 2G network.

The Terminal 100 includes, but is not limited to, a Mobile Station (MS), a Mobile Terminal device (Mobile Terminal), a Mobile phone (Mobile Telephone), a handset (handset), a portable device (portable equipment), etc., which may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), for example, the Terminal device may be a Mobile phone (or "cellular" phone), a computer with wireless communication capability, etc., and the Terminal device may also be a portable, pocket, hand-held, computer-built-in or vehicle-mounted Mobile device or equipment.

The base station, i.e., public mobile communication base station, is an interface device for mobile devices to access the internet, and is one form of a radio station, which is a radio transceiver station for transmitting information to and from a mobile phone terminal through a mobile communication switching center in a certain radio coverage area. The base station can also be called a base station system and consists of a plurality of independent base station devices, and a complete base station device also comprises power supply, storage battery, air conditioner, security monitoring and other matched devices. The LTE base station 110 mainly includes three parts, namely a BBU (Building Base band Unite, indoor baseband processing unit), an RRU (Radio Remote Unit, remote radio unit), and a radio frequency antenna, where the BBU is mainly responsible for signal modulation, the RRU is mainly responsible for radio frequency processing, and the antenna is mainly responsible for conversion between a cable uplink traveling wave and a spatial wave in the air. Compared with the LTE base station, the NR base station 120 combines the RRU and the radio frequency antenna in front of the LTE base station into an AAU (Active Antenna Unit ) and is connected with the BBU through an optical fiber. The 2G base station 150 initially mainly adopts an integrated base station architecture: the antenna of the base station is positioned on the iron tower, the rest part of the antenna is positioned in a machine room beside the base station, and the antenna is connected with the indoor machine room through a feeder line. Later developed into a distributed base station architecture that divides the BTS into RRU and BBU, where RRU is mainly responsible for the modules related to radio frequency, including 4 big modules: the device comprises an intermediate frequency module, a transceiver module, a power amplifier and a filtering module. The BBU is mainly responsible for baseband processing, protocol stack processing, etc. The RRUs are positioned on the iron towers, the BBUs are positioned in the indoor machine room, each BBU can be connected with a plurality of (3-4) RRUs, and the BBUs and the RRUs are connected through optical fibers. The 3G base station 140 is basically consistent with the 2G base station, and mainly adopts a distributed base station architecture, where the distributed base station architecture divides the Node B into two parts, namely a BBU and an RRU. Base stations can be classified into Macro base stations (Macro Site), micro base stations (Micro Site), pico base stations (Pico Site), femto base stations (Femto Site) according to their station type size and power: the single carrier wave transmitting power of the macro base station is more than 10W, and the coverage radius is more than 200 m; the single carrier wave transmitting power of the micro base station is 500mW to 10W, and the coverage radius is 50 meters to 200 meters; the single carrier wave transmitting power of the pico base station is between 100mW and 500mW, and the coverage radius is between 20 meters and 50 meters; the single carrier wave transmitting power of the femto base station is below 100mW, and the coverage radius is between 10 meters and 20 meters.

The core network 130 is the most core part of the communication network, and is an information processing center, and generally, one core network can process data of thousands or tens of thousands of base stations, and is mainly responsible for data processing and routing. The core network 130 can provide user connection, user management, and service bearer functions, and can provide an interface of an external network as a bearer network; the establishment of the user connection comprises functions such as MM (Mobile Management, mobility Management), CM (Call Management), exchange/route, recording notification (connection relation to the peripheral equipment of the intelligent network is completed in combination with the intelligent network service), and the like; user management includes user description, user service Qos (Quality of Service ) description, user communication record (Accounting), session with intelligent network platform providing VHE (Virtual Home Environment ), security (corresponding security measures provided by authentication center); traffic bearers include PSTN (Public Switched Telephone Network ) to the outside, external circuit data networks and packet data networks, internet (Internet) and Intranets (Intranets), SMS (Short Message Service, short message server), etc.

In the following method embodiments, for convenience of explanation, only the execution subject of each step is described as a terminal.

The following describes in detail a registration method of a 5G system according to an embodiment of the present application with reference to fig. 2 to 4.

Referring to fig. 2, a flowchart of a registration method of a 5G system is provided in an embodiment of the present application. The embodiment is illustrated by applying a registration method of a 5G system to a terminal, where the registration method of the 5G system may include the following steps:

s201, the terminal initiates a VoLTE call flow under the 5G system.

The Voice over Long-Term Evolution (LTE) call flow refers to a high-definition Voice video call initiated based on an LTE (Long Term Evolution, long-Term Evolution) network, and the VoLTE Voice service is an IP (Internet Protocol ) Voice service provided based on a packet domain.

In general, a terminal supports NSA mode, initiates a registration request to a 5G system, registers to the 5G system through NSA mode, and when the terminal successfully registers to the 5G system, acquires 5G registration information of the terminal and service capability information of the 5G system, where the 5G registration information includes one or more of LTE cell and frequency point information, bandwidth information, PCI information, and cell configuration information of the 5G cell, the service capability information of the 5G system refers to whether the terminal supports VoLTE voice service, and when the terminal registers to the 5G system, the terminal initiates 4G cell registration, and when the LTE cell registration is performed, the network informs the terminal whether the LTE network supports VoLTE voice service. After the terminal successfully registers to the 5G system, the terminal initiates a VoLTE call flow through the 5G system.

The NSA mode is a dual connectivity network mode of a 4G radio access network and a 5G NR, i.e. a new wireless dual connectivity architecture of 4G LTE and 5G NR of a non-independent networking: in NSA mode, the UE establishes a connection with the 4G core network while using radio resources of at least two different base stations (a 4G base station being a master station and a 5G NR base station being a slave station), transmitting signaling by means of the 4G core network, the 4G base station or the 5G NR base station transmitting data traffic. The main difference between SA mode and NSA mode is the difference between the core network accessed: in NSA mode, the 5G NR base station is accessed to a 4G core network, and transmits signaling through the 4G core network, and the 4G base station or the 5G NR base station transmits data service; in NSA mode of the terminal, the operator may share a 4G core network with both 4G and 5G. In SA mode, the 5G NR base station is directly connected to the 5G core network, and transmits signaling through the 5G core network, and the 5G NR base station transmits data service. NSA mode is a transitional networking mode in the early stages of 5G construction.

S202, when determining that the VoLTE call flow fails, disconnecting the 5G system, and initiating a circuit domain call flow through the CSFB flow.

The CSFB (Circuit Switched Fallback, circuit domain fallback) procedure refers to a process of fallback of voice traffic to the circuit domain through the CSFB technique. The CSFB technology is suitable for a scene that a 2G/3G circuit domain is overlapped with a wireless network of TD-LTE, the network structure is simple, and an IMS (IP Multimedia Subsystem ) system is not required to be deployed. The circuit domain call flow refers to a voice call initiated over the circuit domain based on the 2G/3G network.

In general, when the LTE network signal quality of the terminal is poor, or when the terminal has an abnormal condition, the VoLTE call flow initiated by the terminal may cause a call failure, the network state of the terminal needs to disconnect the network connection of the 5G system, and drops back to the CS (Circuit Switch) domain from the PS (Packet Switch) domain, the CSFB flow needs to be triggered in the Circuit drop process of the terminal, the terminal starts searching for at least one surrounding 3G cell, selects a target 3G cell from the at least one 3G cell as a 3G serving cell, registers to the 3G system based on the 3G serving cell, initiates a Circuit domain call flow through the 3G system, searches for at least one 2G cell if the 3G system does not meet a first preset signal quality condition, selects a target 2G cell from the at least one 2G cell as a 2G serving cell, registers to the 2G system based on the 2G serving cell, and initiates a Circuit domain call through the 2G system, so that the terminal can complete the call flow in the 2G/3G network flow mode.

S203, when the circuit domain call flow is completed, pre-stored 5G registration information is acquired, and the pre-stored 5G registration information is re-registered to the 5G system.

The 5G registration information refers to key information of the LTE network and the 5G network, which is recorded when a terminal supporting the NSA mode registers in the 5G system, and includes one or more of frequency point information, bandwidth information, PCI information, and cell configuration information of the LTE cell and the 5G cell.

Generally, after completing a voice call through a circuit domain based on a 2G network or a 3G network, the terminal initiates a 5G network re-registration procedure, and at this time, pre-stored 5G registration information is queried from a database, and based on the 5G registration information, network registration of a 4G cell and a 5G cell is directly initiated, so that the 5G network is quickly restored. If the terminal can not successfully register to the 5G network based on the 5G registration information pre-stored in the database, the terminal initiates full-channel scanning and registering of the 4G cell and the 5G cell respectively.

As can be seen from the foregoing, the present solution provides a registration method for a 5G system, where a terminal initiates a VoLTE call flow under the 5G system, and the terminal registers to the 5G system through NSA mode, when determining that the VoLTE call flow fails, disconnects the 5G system, initiates a circuit domain call flow through CSFB flow, and when completing the circuit domain call flow, obtains pre-stored 5G registration information, and re-registers to the 5G system based on the 5G registration information, so that the terminal can quickly re-establish the 5G system connection, save the 5G system registration time, and improve the communication experience of the user.

Referring to fig. 3, another flow chart of a registration method of a 5G system is provided in an embodiment of the present application. The present embodiment is exemplified by a registration method of a 5G system applied to a terminal supporting NSA mode. The registration method of the 5G system may include the steps of:

S301, a registration request is initiated to a 5G system.

S302, acquiring 5G registration information of the terminal when the terminal is successfully registered in the 5G system.

Generally, when a terminal successfully registers in a 5G system, 5G registration information of the terminal is acquired, so that the terminal can inquire the 5G registration information from a database after the terminal is disconnected with a 5G network, and can quickly register in the 5G system based on the 5G registration information.

S303, the terminal initiates a VoLTE call flow under the 5G system.

The VoLTE call flow refers to high-definition voice video call initiated based on an LTE network, and the VoLTE voice service is an IP voice service provided based on a packet domain.

In general, a terminal supports NSA mode, initiates a registration request to a 5G system, registers to the 5G system through NSA mode, and when the terminal successfully registers to the 5G system, acquires 5G registration information of the terminal and service capability information of the 5G system, where the 5G registration information includes one or more of LTE cell and frequency point information, bandwidth information, PCI information, and cell configuration information of the 5G cell, the service capability information of the 5G system refers to whether the terminal supports VoLTE voice service, and when the terminal registers to the 5G system, the terminal initiates LTE cell registration, and when the terminal performs LTE cell registration, the network informs the terminal whether the LTE network supports VoLTE voice service. After the terminal successfully registers to the 5G system, the terminal initiates a VoLTE call flow through the 5G system.

S304, acquiring the starting time of the VoLTE call flow.

The initiation time refers to an initial time when the VoLTE call flow is sent by the terminal, and based on the initiation time of the VoLTE call flow recorded by the terminal, the terminal can record a time length before receiving a call success response corresponding to the VoLTE call flow, and further determine whether the VoLTE call flow is successful according to the time length.

S305, based on the starting time, when a call success response corresponding to the VoLTE call flow is not received within a preset time, determining that the VoLTE call flow fails in the call, and disconnecting the 5G system.

The preset duration refers to a preset duration of voice call waiting of VoLTE, which is used for measuring success or failure of the VoLTE call flow.

Generally, the terminal starts recording the time length from the initiation of the VoLTE call flow to the receipt of a successful call response corresponding to the VoLTE call flow based on the initiation time of the VoLTE call flow, and when the time length is greater than a preset time length, the terminal can determine that the VoLTE call flow fails to call, and at this time, disconnects the 5G system of the terminal, and prepares the circuit to fall back to the circuit domain of the 2G/3G network for voice call.

S306, searching at least one 3G cell.

S307, selecting a target 3G cell from at least one 3G cell as a 3G service cell.

The target 3G cell is a 3G cell meeting the preset signal quality condition, the 3G service cell is a region where the terminal can currently obtain 3G network service, the region is a cell divided from the whole 3G communication service region, a 3G base station is arranged in the cell and is responsible for establishing wireless connection with the terminal in the cell, and the 3G terminal is supported to perform 3G communication in any cell in the 3G communication service region. The signal quality is a factor affecting the network transmission performance, the signal quality is affected by channel capacity, channel bandwidth, signal-to-noise ratio, error rate and the like, and the preset signal quality condition refers to a signal quality condition which needs to be met by the 3G cell and is used for measuring the stability performance of the data transmission of the 3G cell.

In general, the terminal may search for a plurality of 3G cells during the process of searching for the 3G cells, and in order to provide a stable network environment for the terminal, to enable the terminal to smoothly complete a circuit domain call flow, it is necessary to select a 3G cell satisfying a preset signal quality condition from at least one 3G cell searched for by the terminal as a 3G serving cell of the terminal.

S308, registering to the 3G system based on the 3G service cell, and initiating a circuit domain call flow through the 3G system.

The circuit domain call flow refers to a voice call initiated on the circuit domain based on the 3G network, the circuit fallback is initiated through the CSFB flow, and the CSFB flow refers to a process of fallback voice service to the circuit domain through the CSFB technology. The CSFB technology is suitable for a scene that a 2G/3G circuit domain is overlapped with a TD-LTE wireless network, the network structure is simple, and an IMS system does not need to be deployed.

In general, in the circuit fallback process of the terminal, a 3G cell with good signal quality is searched and found as a 3G serving cell of the terminal, and the terminal registers to a 3G system through the 3G serving cell, so that the terminal can initiate a circuit domain call flow through the 3G system.

S309, searching at least one 2G cell when the 3G system is determined to not meet the first preset signal quality condition.

The first preset signal quality condition refers to a signal quality condition that needs to be met by the 3G cell, and is used for measuring the stability performance of data transmission of the 3G cell. Signal quality is a factor affecting network transmission performance, and is affected by channel capacity, channel bandwidth, signal-to-noise ratio, bit error rate, etc.

Generally, the 3G cell searched and selected by the terminal is a 3G cell satisfying a preset signal quality condition, so that the terminal can complete a circuit domain call flow in a stable network environment, and if the 3G cell searched by the terminal cannot satisfy the preset signal quality condition, the terminal will start the flow of searching the 2G cell, and select a 2G cell capable of providing the stable network environment to initiate the circuit domain call flow.

And S310, selecting a target 2G cell from at least one 2G cell as a 2G serving cell.

The target 2G cell is a 2G cell meeting the preset signal quality condition, the 2G service cell is a region where the terminal can currently obtain 2G network service, the region is a cell divided from the whole 2G communication service region, a 2G base station is arranged in the cell and is responsible for establishing wireless connection with the terminal in the cell, and the 2G terminal is supported to perform 2G communication in any cell in the 2G communication service region. The signal quality is a factor affecting the network transmission performance, the signal quality is affected by channel capacity, channel bandwidth, signal-to-noise ratio, bit error rate and the like, and the preset signal quality condition refers to a signal quality condition that needs to be met by the 2G cell, and is used for measuring the stability performance of the 2G cell for data transmission.

In general, a terminal may search for multiple 2G cells during searching for the 2G cells, and in order to provide a stable network environment for the terminal, to enable the terminal to smoothly complete a circuit domain call flow, it is necessary to select a 2G cell satisfying a preset signal quality condition from at least one 2G cell searched for by the terminal as a 2G serving cell of the terminal.

S311, registering to the 2G system based on the 2G service cell, and initiating a circuit domain call flow through the 2G system.

The circuit domain call flow refers to a voice call initiated on the circuit domain based on the 2G network, the circuit fallback is initiated through the CSFB flow, and the CSFB flow refers to a process of fallback voice service to the circuit domain through the CSFB technology. The CSFB technology is suitable for a scene that a 2G/3G circuit domain is overlapped with a TD-LTE wireless network, the network structure is simple, and an IMS system does not need to be deployed.

In general, in the circuit fallback process of the terminal, a 2G cell with good signal quality is searched and found as a 2G serving cell of the terminal, and the terminal registers to a 2G system through the 2G serving cell, so that the terminal can initiate a circuit domain call flow through the 2G system.

S312, when the circuit domain call flow is completed, pre-stored 5G registration information is obtained, and re-registration is performed to the 5G system based on the 5G registration information

Generally, after completing a voice call through a circuit domain based on a 2G network or a 3G network, the terminal initiates a 5G network re-registration procedure, and at this time, pre-stored 5G registration information is queried from a database, where the pre-stored 5G registration information includes one or more of frequency point information, bandwidth information, PCI information and cell configuration information of an LTE cell and a 5G cell. Based on the 5G registration information, network registration of the LTE cell and the 5G cell is directly initiated, so that the 5G network is quickly restored. If the terminal can not successfully register to the 5G network based on the 5G registration information pre-stored in the database, the terminal initiates full-channel scanning and registering of the LTE cell and the 5G cell respectively.

And S313, searching at least one LTE cell and at least one 5G cell which are supported by NSA mode around when the 5G system is determined to not meet the second preset signal quality condition.

The second preset signal quality condition refers to a signal quality condition that needs to be met by the 5G network, including signal quality conditions of the LTE cell and the 5G cell, and is used for measuring stability performance of data transmission of the LTE cell and the 5G cell. Signal quality is a factor affecting network transmission performance, and is affected by channel capacity, channel bandwidth, signal-to-noise ratio, bit error rate, etc.

Generally, after the terminal registers to the 5G system through the 5G registration information pre-stored in the database, if the terminal detects that the current 5G system does not meet the second preset signal quality condition and cannot provide stable 5G network service for the terminal, the terminal will analyze the signal quality of the current LTE cell and the current 5G cell; if the current LTE cell of the terminal does not meet the preset signal quality condition, the terminal re-searches at least one surrounding LTE cell, and selects the LTE cell meeting the preset signal quality condition from the at least one LTE cell as an LTE service cell of the terminal; if the current 5G cell of the terminal does not meet the preset signal quality condition, the terminal re-searches at least one surrounding 5G cell, and selects the 5G cell meeting the preset signal quality condition from the at least one surrounding 5G cell as a 5G service cell of the terminal; if the current LTE cell and the current 5G cell of the terminal do not meet the preset signal quality condition, the terminal re-searches at least one LTE cell around, selects the LTE cell meeting the preset signal quality condition as an LTE service cell of the terminal, searches the 5G cell, selects the 5G cell meeting the preset signal quality condition from the searched 5G cells as the 5G service cell of the terminal based on the LTE service cell, and supports an NSA mode under the double connection of the 5G service cell and the LTE service cell, so that the terminal can obtain a stable 5G network environment.

And S314, determining a target LTE cell and a target 5G cell with good signal quality from at least one LTE cell and at least one 5G cell which support NSA mode.

The target LTE cell is a 4G cell satisfying a preset signal quality condition, and is a region where the terminal can currently obtain a 4G network service, and is a cell divided from the entire 4G communication service area, where a 4G base station is disposed in the cell and is responsible for establishing a wireless connection with a terminal in the cell, and the terminal supporting 4G can perform 4G communication in any cell in the 4G communication service area. The signal quality is a factor affecting the network transmission performance, the signal quality is affected by channel capacity, channel bandwidth, signal-to-noise ratio, error rate and the like, and the preset signal quality condition refers to a signal quality condition which needs to be met by the 4G cell and is used for measuring the stability performance of the data transmission of the 4G cell. The target 5G cell is a 5G cell meeting the preset signal quality condition, and is a region where the terminal can currently obtain 5G network service, and is a cell divided from the whole 5G communication service region, wherein a 5G base station is arranged in the cell and is responsible for establishing wireless connection with the terminal in the cell, and the terminal supporting 5G can perform 5G communication in any cell in the 5G communication service region. The signal quality is a factor affecting the network transmission performance, the signal quality is affected by channel capacity, channel bandwidth, signal-to-noise ratio, error rate and the like, and the preset signal quality condition refers to a signal quality condition which needs to be met by the 5G cell and is used for measuring the stability performance of the data transmission of the 5G cell.

S315, registering to the 5G system based on the target LTE cell and the target 5G cell.

In general, the target LTE cell and the target 5G cell are both cells satisfying a preset signal quality condition, and support an NSA mode under the combination of the target LTE cell and the target 5G cell, so that the terminal can register to the 5G system in the NSA mode and obtain a stable network environment.

According to the registration method of the 5G system, the terminal initiates a registration request to the 5G system, when the terminal successfully registers to the 5G system, 5G registration information of the terminal is obtained, the terminal initiates a VoLTE call flow under the 5G system, the initiation time of the VoLTE call flow is obtained, based on the initiation time, when a call success response corresponding to the VoLTE call flow is not received within a preset time period, the VoLTE call flow is determined to be failed, the 5G system is disconnected, at least one 3G cell is searched, a target 3G cell is selected from the at least one 3G cell as a 3G service cell, the 3G system is registered to the 3G system based on the 3G service cell, a circuit domain call flow is initiated through the 3G system, when the 3G system is determined to not meet a first preset signal quality condition, the target 2G cell is selected from the at least one 2G cell as the 2G service cell, registration of the 2G system is determined to be performed based on the 2G service cell, the at least one 5G system is initiated through the 2G system, the at least one 5G system is searched for a signal quality condition is met when the at least one 5G system is initiated, the at least one LTE call flow is searched for 5G system is completed, the signal registration condition is not met from the at least one 5G cell is determined to be better, and the signal condition is met based on the at least one 5G system is determined to be different from the target cell, and the 5G system is determined to be different from the target cell and the 5G system. By the method, the terminal can quickly reestablish stable 5G network connection after finishing the voice call flow through the circuit domain, so that the registration time of a 5G system is saved, and the communication experience of a user is improved.

Referring to fig. 4, another flow chart of a registration method of a 5G system is provided in an embodiment of the present application. The present embodiment is exemplified by a registration method of a 5G system applied to a terminal supporting NSA mode. The registration method of the 5G system may include the steps of:

s401, a registration request is initiated to a 5G system.

S402, acquiring 5G registration information of a terminal and acquiring service capability information of the 5G system when the terminal is successfully registered in the 5G system.

The 5G registration information refers to key information of the LTE network and the 5G network, which is recorded when a terminal supporting the NSA mode registers in the 5G system, and includes one or more of frequency point information, bandwidth information, PCI information, and cell configuration information of the LTE cell and the 5G cell. The service capability information of the 5G system refers to the capability of whether the terminal supports the VoLTE voice service, when the terminal registers the 5G system, the terminal initiates LTE cell registration, and when the LTE cell registration is performed, the network informs the terminal whether the LTE network supports the VoLTE voice service.

Generally, when a terminal successfully registers in a 5G system, 5G registration information of the terminal is acquired, so that the terminal can inquire the 5G registration information from a database after the terminal is disconnected with a 5G network, can quickly register in the 5G system based on the 5G registration information, and can acquire service capability information of the 5G system, thereby judging whether the terminal can initiate a VoLTE call flow under the current 5G system.

S403, the terminal initiates a VoLTE call flow under the 5G system.

In general, a terminal supports NSA mode, initiates a registration request to a 5G system, registers to the 5G system through NSA mode, and when the terminal successfully registers to the 5G system, acquires 5G registration information of the terminal and service capability information of the 5G system, where the 5G registration information includes one or more of LTE cell and frequency point information, bandwidth information, PCI information, and cell configuration information of the 5G cell, the service capability information of the 5G system refers to whether the terminal supports VoLTE voice service, and when the terminal registers to the 5G system, the terminal initiates 4G cell registration, and when the 4G cell registration is performed, the network informs the terminal whether the LTE network supports VoLTE voice service. After the terminal successfully registers to the 5G system, the terminal initiates a VoLTE call flow through the 5G system.

And S404, when the LTE network does not support the VoLTE service based on the service capability information, determining that the VoLTE call flow fails in calling, and disconnecting the 5G system.

In general, by analyzing the service capability information of the 5G system, it is known whether the terminal supports the VoLTE voice service, and when the terminal registers the 5G system, the network initiates LTE cell registration, and when the LTE cell registration is performed, the network informs the terminal whether the LTE network supports the VoLTE voice service. When the LTE network under the current 5G system does not support VoLTE service, the failure of the VoLTE call flow call initiated by the terminal can be determined, and the connection of the current 5G system is required to be disconnected, so that the terminal falls back to the circuit domain to initiate the circuit domain call flow.

S405, searching at least one 3G cell.

And S406, selecting a target 3G cell from at least one 3G cell as a 3G service cell.

S407, registering to the 3G system based on the 3G service cell, and initiating a circuit domain call flow through the 3G system.

And S408, searching at least one 2G cell when the 3G system is determined to not meet the first preset signal quality condition.

S409, selecting a target 2G cell from at least one 2G cell as a 2G serving cell.

S410, registering to the 2G system based on the 2G service cell, and initiating a circuit domain call flow through the 2G system.

S411, when the circuit domain call flow is completed, pre-stored 5G registration information is obtained, and re-registration to the 5G system is performed based on the 5G registration information

Generally, after completing a voice call through a circuit domain based on a 2G network or a 3G network, the terminal initiates a 5G network re-registration procedure, and at this time, pre-stored 5G registration information is queried from a database, where the pre-stored 5G registration information includes one or more of frequency point information, bandwidth information, PCI information and cell configuration information of an LTE cell and a 5G cell. Based on the 5G registration information, network registration of the 4G cell and the 5G cell is directly initiated, so that the 5G network is quickly restored. If the terminal can not successfully register to the 5G network based on the 5G registration information pre-stored in the database, the terminal initiates full-channel scanning and registering of the 4G cell and the 5G cell respectively.

And S412, respectively searching at least one LTE cell and at least one 5G cell which are supported by NSA mode around when the 5G system is determined to not meet the second preset signal quality condition.

S413, determining a target LTE cell and a target 5G cell with good signal quality from at least one LTE cell and at least one 5G cell supporting NSA mode.

S414, registering with the 5G system based on the target LTE cell and the target 5G cell.

As can be seen from the foregoing, in the registration method of the 5G system provided by the present embodiment, the terminal initiates a registration request to the 5G system, when the terminal successfully registers to the 5G system, acquires 5G registration information of the terminal, acquires service capability information of the 5G system, initiates a VoLTE call flow under the 5G system, determines that the LTE network does not support VoLTE service based on the service capability information, determines that the VoLTE call flow fails, disconnects the 5G system, searches for at least one 3G cell, selects a target 3G cell from the at least one 3G cell as a 3G service cell, registers to the 3G system based on the 3G service cell, initiates a circuit domain call flow through the 3G system, searches for at least one 2G cell when it is determined that the 3G system does not satisfy a first preset signal quality condition, selects a target 2G cell from the at least one 2G cell as a 2G service cell, registers to the 2G system based on the 2G service cell, and initiates a circuit domain call flow through the 2G system, and when the terminal completes a pre-registration condition is determined that the LTE signal quality condition is satisfied by the at least one 5G cell and the LTE system is satisfied by at least one 5G cell, and the second signal quality condition is determined that the target signal quality condition is satisfied from the LTE system is satisfied at least one 5G cell and the 5G cell is satisfied. By the method, the terminal can quickly reestablish stable 5G network connection after finishing the voice call flow through the circuit domain, so that the registration time of a 5G system is saved, and the communication experience of a user is improved.

The following are examples of the apparatus of the present application that may be used to perform the method embodiments of the present application. For details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method of the present application.

Referring to fig. 5, a schematic structural diagram of a registration apparatus of a 5G system according to an exemplary embodiment of the present application is shown, and the apparatus is hereinafter referred to as apparatus 5. The apparatus 5 may be implemented as all or part of a terminal by software, hardware or a combination of both. The apparatus 5 is applied to a terminal supporting a non-independent networking NSA mode, and the apparatus 5 includes:

a calling module 501, configured to initiate a VoLTE call flow by a terminal in a 5G system; the terminal registers to a 5G system through an NSA mode;

a processing module 502, configured to disconnect a 5G system and initiate a circuit domain call flow through a CSFB procedure when determining that the VoLTE call flow fails;

a registration module 503, configured to obtain pre-stored 5G registration information when the circuit domain call flow is completed, and re-register the circuit domain call flow to a 5G system based on the pre-stored 5G registration information.

Optionally, the device 5 further comprises:

a request unit, configured to initiate a registration request to the 5G system;

a first obtaining unit, configured to obtain 5G registration information of the terminal when the terminal successfully registers to the 5G system; the 5G registration information comprises one or more of frequency point information, bandwidth information, PCI information and cell configuration information of an LTE cell and a 5G cell.

Optionally, the processing module 502 includes:

a first search unit for searching at least one 3G cell;

a first selection unit, configured to select a target 3G cell from the at least one 3G cell as a 3G serving cell;

and the first processing unit is used for registering to a 3G system based on the 3G service cell and initiating the circuit domain call flow through the 3G system.

Optionally, the processing module 502 further includes:

a second searching unit, configured to search at least one 2G cell when it is determined that the 3G system does not meet a first preset signal quality condition;

a second selecting unit, configured to select a target 2G cell from the at least one 2G cell as a 2G serving cell;

and the second processing unit is used for registering to a 2G system based on the 2G service cell and initiating the circuit domain call flow through the 2G system.

Optionally, the processing module 502 includes:

a second obtaining unit, configured to obtain an initiation time of the VoLTE call flow;

and the first determining unit is used for determining that the VoLTE call flow fails in a call success response corresponding to the VoLTE call flow is not received within a preset time based on the initiating time.

Optionally, the processing module 502 includes:

a third obtaining unit, configured to obtain service capability information of the 5G system when the registration to the 5G system is successful;

and the second determining unit is used for determining that the VoLTE call flow fails in calling when the LTE network does not support the VoLTE service based on the service capability information.

Optionally, the registration module 503 further includes:

a third searching unit, configured to search at least one LTE cell and at least one 5G cell around which NSA mode is supported, respectively, when it is determined that the 5G system does not meet the preset second signal quality condition;

a third determining unit, configured to determine a target LTE cell and a target 5G cell with good signal quality from the at least one LTE cell and the at least one 5G cell supporting NSA mode;

and the registration unit is used for registering to a 5G system based on the target LTE cell and the target 5G cell.

It should be noted that, when the registration apparatus of the 5G system provided in the foregoing embodiment performs the registration method of the 5G system, only the division of the foregoing functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the registration device of the 5G system provided in the foregoing embodiment belongs to the same concept as the registration method embodiment of the 5G system, which embodies the detailed implementation process and is not described herein.

The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

The embodiment of the present application further provides a computer storage medium, where the computer storage medium may store a plurality of instructions, where the instructions are suitable for being loaded by a processor and executed as described above, and the specific execution process may refer to the specific description of the embodiment shown in fig. 2 to fig. 4, which is not repeated herein.

The application also provides a terminal, which comprises a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the above-mentioned method steps.

Referring to fig. 6, a schematic structural diagram of a terminal according to an embodiment of the present application is shown, where the terminal may be used to implement the registration method of the 5G system in the above embodiment. Specifically, the present application relates to a method for manufacturing a semiconductor device.

The memory 603 may be used to store software programs and modules, and the processor 600 performs various functional applications and data processing by executing the software programs and modules stored in the memory 603. The memory 603 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the terminal device, and the like. In addition, memory 603 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 603 may also include a memory controller to provide access to the memory 603 by the processor 600 and the input unit 605.

The input unit 605 may be used to receive input numeric or character information and to generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, the input unit 605 may include a touch-sensitive surface 606 (e.g., a touch screen, touchpad, or touch frame). The touch-sensitive surface 606, also referred to as a touch display screen or touch pad, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch-sensitive surface 606 or thereabout using any suitable object or accessory such as a finger, stylus, etc.), and actuate the corresponding connection device according to a predetermined program. Alternatively, the touch-sensitive surface 606 may comprise two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends the touch point coordinates to the processor 600, and can receive and execute commands sent from the processor 600. In addition, the touch sensitive surface 606 may be implemented using a variety of types, such as resistive, capacitive, infrared, and surface acoustic waves.

The display unit 613 may be used to display information input by a user or information provided to the user and various graphic user interfaces of the terminal device, which may be composed of graphics, text, icons, video and any combination thereof. The display unit 613 may include a display panel 614, and alternatively, the display panel 614 may be configured in the form of an LCD (Liquid Crystal Display ), an OLED (Organic Light-Emitting Diode), or the like. Further, the touch-sensitive surface 606 may overlay the display panel 614, and upon detection of a touch operation thereon or thereabout by the touch-sensitive surface 606, is communicated to the processor 600 to determine the type of touch event, and the processor 600 then provides a corresponding visual output on the display panel 614 based on the type of touch event. Although in fig. 6 the touch-sensitive surface 606 and the display panel 614 are implemented as two separate components for input and output functions, in some embodiments the touch-sensitive surface 606 may be integrated with the display panel 614 to implement input and output functions.

The processor 600 is a control center of the terminal device, connects various parts of the entire terminal device using various interfaces and lines, and performs various functions of the terminal device and processes data by running or executing software programs and/or modules stored in the memory 603 and calling data stored in the memory 603, thereby performing overall monitoring of the terminal device. Optionally, the processor 600 may include one or more processing cores; the processor 600 may integrate, among other things, an application processor that primarily handles operating systems, user interfaces, applications, etc., and a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 600.

In particular, in this embodiment, the display unit of the terminal device is a touch screen display, and the terminal device further includes a memory, and one or more programs, where the one or more programs are stored in the memory, and configured to be executed by the one or more processors, where the one or more programs include steps for implementing the above-mentioned registration method of the 5G system.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described embodiment of the apparatus is merely illustrative, and for example, the division of the units is merely a logic function division, and there may be other division manners in actual implementation, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.

The functional units in the embodiments of the present application may be all integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A registration method of a 5G system, wherein the method is applied to a terminal supporting a non-independent networking NSA mode, the method comprising:

when the circuit domain call flow is completed, pre-stored 5G registration information is acquired, and the 5G system is re-registered based on the 5G registration information;

before the terminal initiates the VoLTE call flow under the 5G system, the method further includes:

initiating a registration request to the 5G system;

when the terminal is successfully registered to the 5G system, acquiring 5G registration information of the terminal and pre-storing the information; the 5G registration information comprises one or more of frequency point information, bandwidth information, PCI information and cell configuration information of an LTE cell and a 5G cell.

2. The method of claim 1, wherein the initiating a circuit-switched domain call flow via a CSFB flow comprises:

searching at least one 3G cell;

selecting a target 3G cell from the at least one 3G cell as a 3G serving cell;

registering to a 3G system based on the 3G service cell, and initiating the circuit domain call flow through the 3G system.

3. The method according to claim 2, wherein the method further comprises:

searching at least one 2G cell when the 3G system is determined to not meet a first preset signal quality condition;

selecting a target 2G cell from the at least one 2G cell as a 2G serving cell;

registering to a 2G system based on the 2G service cell, and initiating the circuit domain call flow through the 2G system.

4. The method of claim 1, wherein said determining that the VoLTE call flow call failed comprises:

acquiring the starting time of the VoLTE call flow;

and based on the initiating time, determining that the VoLTE call flow fails in a call success response corresponding to the VoLTE call flow is not received within a preset time.

5. The method of claim 1, wherein said determining that the VoLTE call flow call failed comprises:

When the user successfully registers to the 5G system, acquiring service capability information of the 5G system;

and determining that the VoLTE call flow fails in calling when the LTE network does not support VoLTE service based on the service capability information.

6. The method of claim 1, wherein upon completion of the circuit-domain call flow, obtaining pre-stored 5G registration information, and re-registering with a 5G system based on the 5G registration information, further comprising:

when the 5G system is determined to not meet the preset second signal quality condition, searching at least one LTE cell and at least one 5G cell which support NSA mode around;

determining a target LTE cell and a target 5G cell with good signal quality from the at least one LTE cell and the at least one 5G cell supporting NSA mode;

registering to a 5G system based on the target LTE cell and the target 5G cell.

7. A registration apparatus for a 5G system, the apparatus being applied to a terminal supporting a non-independent networking NSA mode, the apparatus comprising:

The registration module is used for acquiring prestored 5G registration information and re-registering to a 5G system based on the 5G registration information when the circuit domain call flow is completed;

wherein, the device still includes:

a request unit, configured to initiate a registration request to the 5G system;

8. A computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the method steps of any one of claims 1 to 6.

9. A terminal, comprising: the device comprises a processor, a memory and a display screen; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method steps of any of claims 1-6.