WO2021068230A1

WO2021068230A1 - Switching processing method, terminal device, and network device

Info

Publication number: WO2021068230A1
Application number: PCT/CN2019/110753
Authority: WO
Inventors: 尤心
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2021-04-15
Also published as: CN114258706A

Abstract

Disclosed are a switching processing method, a terminal device, a network device, a chip, a computer-readable storage medium, a computer program product, and a computer program. The method comprises: a terminal device receives a switching command sent by a source network device, the switching command comprising switching type indication information; and the terminal device sends indication information to the source network device or a target network device, the indication information being used to indicate that the switching type used by the terminal device is a first switching type or a second switching type, and the switching type used by the terminal device being determined on the basis of the switching type indication information and the capability of the terminal device.

Description

Handover processing method, terminal equipment and network equipment

Technical field

The present invention relates to the field of information processing technology, and in particular to a switching processing method, terminal equipment, network equipment, chip, computer readable storage medium, computer program product, and computer program.

Background technique

In related technologies, after receiving the handover request feedback from the target base station, the source base station will start to forward data to the target base station and send a status report to the target base station. After the terminal device successfully accesses the target base station, it can directly communicate with the target base station. . However, for dual active protocol stack handover, the terminal device will maintain the connection between the source base station and the target base station at the same time. In this scenario, the terminal device may be connected to the source base station and the target base station. The handover type does not match the problem, then it will bring about the problem of useless data transmission, and will bring the problem of greater handover delay.

Summary of the invention

To solve the foregoing technical problems, embodiments of the present invention provide a switching processing method, terminal equipment, network equipment, chips, computer-readable storage media, computer program products, and computer programs.

In a first aspect, a handover processing method is provided, and the method includes:

The terminal device receives the handover command sent by the source network device; wherein the handover command includes handover type indication information;

The terminal device sends instruction information to the source network device or the target network device;

Wherein, the indication information is used to indicate that the handover type adopted by the terminal device is the first type handover or the second type handover; wherein, the handover type adopted by the terminal device is based on the handover type indication information and the terminal device’s Ability to be determined.

In a second aspect, a handover processing method is provided, wherein the method includes:

The source network device sends a handover command to the terminal device; wherein the handover command includes handover type indication information;

The source network device receives the instruction information sent by the terminal device, the instruction information is used to indicate that the handover type used by the terminal device is the first type handover or the second type handover; wherein, the handover type used by the terminal device It is determined based on the handover type indication information and the capabilities of the terminal device.

In a third aspect, a handover processing method is provided, and the method includes:

The target network device receives the instruction information sent by the terminal device;

The indication information is used to indicate that the handover type used by the terminal device is the first type handover or the second type handover; wherein the handover type used by the terminal device is determined based on the handover type indication information and the capability of the terminal device of.

In a fourth aspect, a terminal device is provided, including:

The first communication unit receives a handover command sent by a source network device; wherein the handover command includes handover type indication information; and sends the indication information to the source network device or the target network device;

In a fifth aspect, a source network device is provided, including:

The second communication unit sends a handover command to the terminal device; wherein the handover command includes handover type indication information; and receives the indication information sent by the terminal device, where the indication information is used to instruct the terminal device to use The handover type is a first type handover or a second type handover; wherein the handover type adopted by the terminal device is determined based on the handover type indication information and the capability of the terminal device.

In the sixth aspect, a target network device is provided, including:

The third communication unit receives the instruction information sent by the terminal device;

In a seventh aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation manners.

In an eighth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect, the third aspect, or each of the implementation manners described above.

In a ninth aspect, a chip is provided to implement the methods in the foregoing implementation manners.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the methods in the first aspect to the third aspect or each implementation manner thereof.

In a tenth aspect, a computer-readable storage medium is provided for storing a computer program that enables a computer to execute the methods in the first to third aspects or their respective implementation manners.

In an eleventh aspect, a computer program product is provided, including computer program instructions that cause a computer to execute the methods in the first to third aspects or their implementations.

In a twelfth aspect, a computer program is provided, which, when run on a computer, causes the computer to execute the methods in the first to third aspects or their respective implementation manners.

By adopting the above solution, the terminal device can determine the switching type to be used according to the switching type indication information in the switching command and its own capabilities, and then send the indication information to the source network device or the target network device through the indication information to notify the network-side terminal device to adopt The first type of handover or the second type of handover. In this way, it is possible to match the switching type between the terminal device and the network side, avoid the useless data transmission caused by the mismatch of the switching type between the terminal device and the network side, and avoid the switching time caused by the mismatch of the switching type. The problem of delay.

Description of the drawings

FIG. 1 is a schematic diagram 1 of a communication system architecture provided by an embodiment of the present application;

FIG. 2 is a schematic flow chart 1 of a handover processing method provided by an embodiment of the present invention;

FIG. 3 is a second schematic diagram of a flow of a handover processing method provided by an embodiment of the present invention;

FIG. 4 is a third schematic flowchart of a handover processing method provided by an embodiment of the present invention;

Figure 5 is a schematic diagram of a handover process;

6 is a schematic diagram of the structure of a terminal device provided by an embodiment of the present invention;

FIG. 7 is a schematic diagram of the composition structure of a source network device provided by an embodiment of the present invention;

FIG. 8 is a schematic diagram of the composition structure of a target network device provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of the composition structure of a communication device provided by an embodiment of the present invention;

FIG. 10 is a schematic block diagram of a chip provided by an embodiment of the present application;

FIG. 11 is a schematic diagram 2 of a communication system architecture provided by an embodiment of the present application.

Detailed ways

In order to understand the features and technical content of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and explanation purposes only, and are not used to limit the embodiments of the present invention.

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiment of the present application may be as shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a UE 120 (or called a communication terminal or a terminal). The network device 110 may provide communication coverage for a specific geographic area, and may communicate with UEs located in the coverage area. Optionally, the network equipment 110 may be a network equipment (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a network equipment (NodeB, NB) in a WCDMA system, or an evolution in an LTE system Type network equipment (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment may be a mobile switching center, a relay station, an access point, In-vehicle devices, wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.

The communication system 100 also includes at least one UE 120 located within the coverage area of the network device 110. "UE" as used herein includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, and direct cable connection; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM Broadcast transmitter; and/or another UE's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment. A UE set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal" or a "mobile terminal".

Optionally, direct terminal connection (Device to Device, D2D) communication may be performed between the UEs 120.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

The embodiment of the present invention provides a handover processing method. As shown in FIG. 2, the method includes:

Step 21: The terminal device receives the handover command sent by the source network device; wherein the handover command includes handover type indication information;

Step 22: The terminal device sends instruction information to the source network device or the target network device;

Correspondingly, the handover processing method of the source network device, as shown in Fig. 3, may include:

Step 31: The source network device sends a handover command to the terminal device; wherein the handover command includes handover type indication information;

A handover processing method on the side of the target network device, as shown in FIG. 4, the method includes:

Step 41: The target network device receives the instruction information sent by the terminal device;

The first type of handover provided above is: maintaining the handover of the protocol stack with the target network device and the source network device during the handover process. The second type of handover is: a handover that releases the connection with the source network device after the terminal device receives a handover command.

Specifically, the first type of switch may be an enhanced make-before-break (eMBB) switch, or it may be a dual active protocol stack (dual active protocol stack) switch. There may be other names, as long as the switching process of the connection with the target network device and the source network device can be maintained during the switching, all are within the protection scope of this embodiment.

The second type of handover may include traditional handover or make before break (MBB). Among them, the traditional handover can be understood as the process of disconnecting the link and then establishing the link. For example, it can include the terminal device releasing the connection with the source network device when receiving the handover command, and performing the handover process according to the target network device in the handover command , Can include initiating random access and so on.

In this embodiment, the network device may be a base station on the network side; the source network device may be the source base station corresponding to the serving cell where the terminal device is currently located, and the target network device may be the target base station corresponding to the target cell to which the terminal device is to be handed over .

In a handover scenario, a handover scenario in the second type of handover is described. Similar to the LTE system, the New Radio (NR, New Radio) system supports the handover process of connected terminal devices. When a terminal device that is using network services moves from one cell to another, or due to wireless transmission service load adjustment, activation operation and maintenance, equipment failure, etc., in order to ensure the continuity of communication and the quality of service, the system must The communication link between the terminal equipment and the source cell is transferred to the new cell, that is, the handover process is performed. Take the Xn interface handover process as an example and a corresponding handover process as an example. The whole handover process is divided into the following three stages, which can be seen in Figure 5, including:

Handover preparation stage: As shown in steps 0-5 in Figure 5, the target network device and the source network device are processed according to the mobility control information provided by the access and mobility management function entity (AMF, Access and Mobility Management Function); the terminal device performs For measurement control and reporting, the source network device makes a switch decision, and then the source network device makes a switch request, management control, and switch request confirmation to the target network device. Wherein, the handover confirmation message contains the handover command generated by the target network device, and the source network device is not allowed to make any modification to the handover command generated by the target network device, and directly forwards the handover command to the terminal device.

Handover execution phase: As shown in steps 6-7 in Figure 5, the terminal device immediately executes the handover process after receiving the handover command, which may include the radio access network (RAN, Radio Access Network) between the terminal device and the source network device. ) Handover, the terminal device disconnects the source network device and synchronizes with the target network device and establishes a connection (such as performing random access, sending an RRC handover complete message to the target base station, etc.); SN state transfer; can also include active network device transmission users The new data of the plane function entity (UPF, User Plane Function), and the buffered data is transmitted to the target network device.

Handover completion stage: As shown in steps 8-12 in Figure 5, after the RAN handover is completed, the terminal device transmits user data between the target network device, and the target network device transmits user data between the UPF; then the target The network device and the AMF send a path switch request, the UPF performs the path switch, and then the AMF informs the target network device of the end of the path switch through the source network device, the AMF sends the path switch request confirmation to the target network device, and then the target network device notifies the source network device to proceed Release of user data.

Another handover scenario can include the following two architectures:

Based on dual-connection handover, in this case, during handover, first add the target network device as an auxiliary contact (SN), then change the SN to the master node (MN) through role switching signaling, and finally change the source network The device is released, so as to achieve the effect of reducing the interruption time when switching.

Another architecture is to maintain the connection between the source network device and the target network device at the same time, which can be understood as eMBB switching. The difference of this kind of switching is that the terminal device continues to maintain the connection with the source network device when it receives the switching command (HO command). The connection simultaneously initiates random access to the target network device, and the connection of the source network device is not released until the terminal device and the target network device are connected.

Further, the following restrictions are added: 1. In 0ms handover, it is not necessary to support simultaneous uplink (UL, UpLink) physical uplink shared channel (PUSCH, Physical Uplink Shared Channel) transmission; 2. After receiving the target network device After the first UL authorization (that is, the target base station) sent, the UL PUSCH is switched from the source network device to the target network device.

Based on the foregoing multiple handover scenarios, the solution provided in this embodiment may include the following examples:

Example 1,

The terminal device receives the handover command sent by the source network device; wherein the handover command includes handover type indication information; the terminal device sends the indication information to the source network device.

That is to say, in this processing method, after the terminal device determines the handover type, it sends corresponding indication information to the source network device to indicate the determined handover type. For example, if the terminal device determines to use the first type of handover, the source network device is notified in the instruction message that its switching type is the first type of handover; if the terminal device determines to use the second type of handoff, then the source network device is notified in the instruction message of its handover The type is the second type of switching.

The way for the terminal device to determine its handover type can be:

If the handover type indication information is the first type of handover, it is determined whether the capability of the terminal device meets the configuration of the source network device and the configuration of the target network device;

If it is not satisfied, the terminal device determines to adopt the second type of handover.

Specifically, if the switching command sent by the source network device to the terminal device instructs the terminal device to use the first type of switching, but the configuration of the source network device and the configuration of the target network device exceed the capabilities of the terminal device, the terminal device will not adopt the first type of switching. The first type of handover, but the second type of handover; on the contrary, if the source network device configuration and the target network device configuration do not exceed the capabilities of the terminal device, then the terminal device uses the switching type indicated in the handover command, that is, the first type Switch.

Among them, the source network device configuration and the target network device configuration can be obtained in the following manner: the source network device is a network device currently serving the terminal device, so the terminal device has already obtained the source network device configuration; about the target network device configuration The way to obtain is, the target network device configuration can be carried in the handover command, and correspondingly, the terminal device can be obtained from the handover command.

Further, the source network device configuration (or target network device configuration) can be understood as the related configuration of the terminal device on the source network device side, for example, it can include configurations such as carrier aggregation (CA), dual connectivity (DC), and so on. Correspondingly, the judgment about whether the capability of the terminal device is exceeded can be as follows: if the source network device configuration and the target network device configuration include DC, and the capability of the terminal device indicates that it supports dual connections, then the terminal device satisfies the source network device configuration and Target network device configuration. Of course, there can also be other judgment methods, which will not be exhaustive here.

In addition, there may also be a situation where the handover type indication information of the source network device instructs the terminal device to use the second type of handover, but the terminal device determines that the first type of handover can be used based on its own capabilities and the configuration of the network device. In the instruction information, the source network device is notified that it adopts the first type of switching method; otherwise, the source network device is notified that the terminal device adopts the second type of switching method.

In this processing method, the time point at which the terminal device sends the instruction information to the source network device can be:

Before performing the handover, the terminal device sends the instruction information to the source network device.

Specifically, before the switching is performed, it may be at least one of the following points in time:

After the terminal device receives the handover command;

Before the terminal device initiates downlink synchronization to the target network device;

Before the terminal device initiates random access to the target network device;

After the terminal device completes downlink synchronization with the target network device, and before initiating random access to the target network device.

Several of these situations can be used in combination, of course, can also be used alone, for example, after receiving the handover command, it can be combined with the terminal device to initiate a downlink synchronization to the target network device, and the instruction information can be sent at any point in this period of time. The instruction information may be sent along with the information exchanged between the terminal device and the source network device, for example, the instruction information may be added to a certain piece of information, or for example, the instruction information may be sent separately.

For another example, after receiving the handover command and before the terminal device initiates random access to the target network device, the two can be used in combination, then the instruction information is sent at any point in the period of time; the terminal device can communicate with the target network device. The information exchanged between the source network devices sends the instruction information. For example, the instruction information may be added to a certain piece of information, or for example, the instruction information may be sent separately.

For another example, the instruction information may be sent to the source network device at a certain time point after completion of downlink synchronization with the target network device and before random access is initiated to the target network device. The instruction information may be sent along with the information exchanged between the terminal device and the source network device. For example, the instruction information may be added to a certain piece of information, or for example, the instruction information may be sent separately.

The foregoing random access may be specifically before the terminal device sends the MSG1 in the four-step random access to the target network device; or specifically before the terminal device sends the MSG A in the two-step random access to the target network device.

Based on the foregoing determining the switching type and sending the instruction information, if the terminal device determines to adopt the second type of switching, the instruction information is also used to instruct the source network device to stop dispatching data to the terminal device.

Correspondingly, the processing of the source network device may include: the source network device receives the instruction information and stops scheduling data to the terminal device; wherein the instruction information is used to instruct the terminal device to determine to adopt the second type Handover is also used to instruct the source network device to stop dispatching data to the terminal device.

That is to say, if the terminal device adopts the second type of handover, then it does not need to notify the source network device and the target network device to maintain the protocol stack connection, and the connection with the source network device can be disconnected. Therefore, if the terminal device informs The source network device adopts the second type of handover and at the same time notifies the source network device to no longer send downlink data to the terminal device.

Of course, in the instruction information, the source network device may not be instructed to stop dispatching data to the terminal device; in this case, the source network device may according to the agreement, as long as the terminal device is determined to adopt the second type of handover according to the instruction information, Stop dispatching data to the terminal device.

Further, the source network device may also send the switching type of the terminal device to the target network device; of course, it may not be sent to the target network device, which is not limited here.

Example 2,

The difference from example 1 is that this example is that the terminal device sends instruction information to the target network device.

Specifically, the terminal device receives the handover command sent by the source network device; wherein the handover command includes handover type indication information; the terminal device sends the indication information to the target network device.

Correspondingly, the target network device receives the instruction information sent by the terminal device.

That is to say, in this processing method, after the terminal device determines the handover type, it sends corresponding indication information to the target network device to indicate the determined handover type. For example, if the terminal device determines to use the first type of handover, then the target network device is notified in the instruction message that its switching type is the first type of handover; if the terminal device determines to use the second type of handover, then the target network device is notified in the instruction message of its handover The type is the second type of switching.

The method for the terminal device to determine its handover type is: if the handover type indication information is the first type of handover, it is judged whether the capability of the terminal device meets the configuration of the source network device and the configuration of the target network device; if not, then The terminal device determines to adopt the second type of handover. This part of the processing is the same as in the previous example 1, so it will not be repeated here.

In this example, when the terminal device sends instruction information to the target network device, the instruction information is carried by one of the following information:

MSG 1 in the four-step random access process;

MSG 3 in the four-step random access process;

MSG A in the two-step random access process;

Radio Resource Control (RRC) message after successful random access.

Wherein, the RRC message after a successful random access may be the first RRC message sent by the terminal device to the target network device after the random access is completed, or it may be an RRC message with a preset interval after the random access is completed. Or, it can be any RRC message, which is not exhaustive here.

Based on the foregoing determination of the handover type and sending instruction information to the target network device, if the instruction information sent by the terminal device to the target network device is to instruct the terminal device to use the second type of handover, then the processing of the target network device further includes: When the indication information is used to indicate that the switching type adopted by the terminal device is the second type of switching, the target network device notifies the source network device to stop scheduling data to the terminal device.

Correspondingly, the processing of the source network device may include: the source network device stops scheduling data to the terminal device according to the notification sent by the target network device.

In other words, if the terminal device adopts the second type of handover, it does not need to maintain the protocol stack connection with the source network device and the target network device at the same time, and the connection between the source network device and the terminal device can be disconnected. Therefore, if When the terminal device notifies the target network device to adopt the second type of handover, the target network device notifies the source network device to no longer send downlink data to the terminal device.

Finally, it should be pointed out that in addition to the foregoing example 1 and example 2 can be implemented separately, example 1 and example 2 can also be used in combination, that is, the terminal device can be based on the solution provided in example 1, after receiving the handover command, Send instruction information to the source network device (or, in order to indicate that the sending object is different, the instruction information sent to the source network device can be understood as the first instruction information) to indicate its switching type; further, in order to avoid the source network device from If the instruction information is not received due to some problems, the solution provided in Example 2 can be combined. After the terminal device is successfully switched, the instruction information is also sent to the target network device (or, in order to indicate that the sending object is different, you can The instruction information sent to the target network device is understood as the second instruction information) to indicate the switching type of the target network device.

It can be seen that by adopting the above solution, the terminal device can determine the switching type to be used according to the switching type indication information in the switching command and its own capabilities, and then send the indication information to the source network device or the target network device through the indication information to notify the network side terminal The equipment adopts the first type of handover or the second type of handover. In this way, the switching type of the terminal device and the network side can be matched, and the problem of useless data transmission and time delay caused by the mismatch of the switching type of the terminal device and the network side can be avoided.

The embodiment of the present invention provides a terminal device, as shown in FIG. 6, including:

The first communication unit 61 receives a handover command sent by a source network device; wherein the handover command includes handover type indication information; and sends the indication information to the source network device or the target network device;

Correspondingly, an embodiment of the present invention provides a source network device, as shown in FIG. 7, which may include:

The second communication unit 71 sends a handover command to the terminal device; wherein the handover command includes handover type indication information; and receives the indication information sent by the terminal device, where the indication information is used to instruct the terminal device to use The handover type is a first type handover or a second type handover; wherein the handover type adopted by the terminal device is determined based on the handover type indication information and the capability of the terminal device.

A target network device provided by an embodiment of the present invention, as shown in FIG. 8, includes:

The third communication unit 81 receives the instruction information sent by the terminal device;

The indication information is used to indicate that the handover type adopted by the terminal device is the first type handover or the second type handover; wherein the handover type adopted by the terminal device is determined based on the handover type indication information and the capability of the terminal device of.

The solution provided in this embodiment may include the following examples:

Example 1,

The first communication unit 61 of the terminal device receives the handover command sent by the source network device through the second communication unit 71; wherein the handover command contains the handover type indication information; the first communication unit 61 of the terminal device sends the handover command to the source The network device sends instructions.

The way for the terminal device to determine its handover type can be:

The first processing unit 62, if the handover type indication information is to use the first type handover, then determine whether the capability of the terminal device meets the configuration of the source network device and the configuration of the target network device,

If it is not satisfied, the second type of handover is determined.

The first communication unit 61 of the terminal device sends the instruction information to the source network device before performing the handover.

After the terminal device receives the handover command;

Correspondingly, the processing of the source network device may include: the second processing unit 72 of the source network device stops scheduling data to the terminal device according to the instruction information; wherein, the instruction information is used to instruct the terminal The device determines to use the second type of handover, which is also used to instruct the source network device to stop scheduling data to the terminal device.

Example 2,

Specifically, the first communication unit 61 of the terminal device receives the handover command sent by the source network device; wherein, the handover command includes the handover type indication information; the first communication unit 61 of the terminal device sends to the target network device Instructions.

Correspondingly, the third communication unit 81 of the target network device receives the instruction information sent by the terminal device.

The way the terminal device determines its handover type is the same as that in the foregoing example 1, so it will not be repeated here.

The instruction information is carried by one of the following information:

MSG 1 in the four-step random access process;

MSG 3 in the four-step random access process;

MSG A in the two-step random access process;

Radio Resource Control (RRC) message after successful random access.

Based on the foregoing determination of the handover type and sending instruction information to the target network device, if the instruction information sent by the terminal device to the target network device is to instruct the terminal device to use the second type of handover, then the processing of the target network device further includes: The third communication unit 81, when the indication information is used to indicate that the handover type adopted by the terminal device is the second type of handover, notify the source network device to stop scheduling data to the terminal device.

Correspondingly, the processing of the source network device may include: the second processing unit 72 of the source network device stops scheduling data to the terminal device according to the notification sent by the target network device.

FIG. 9 is a schematic structural diagram of a communication device 900 according to an embodiment of the present invention. The communication device in this embodiment may be specifically the network device in the foregoing embodiment. The communication device 900 shown in FIG. 9 includes a processor 910, and the processor 910 can call and run a computer program from the memory to implement the method in the embodiment of the present invention.

Optionally, as shown in FIG. 9, the communication device 900 may further include a memory 920. The processor 910 can call and run a computer program from the memory 920 to implement the method in the embodiment of the present invention.

The memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.

Optionally, as shown in FIG. 9, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.

Wherein, the transceiver 930 may include a transmitter and a receiver. The transceiver 930 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 900 may specifically be a network device in an embodiment of the present invention, and the communication device 900 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present invention. For brevity, details are not repeated here. .

Optionally, the communication device 900 may specifically be a terminal device or a network device in an embodiment of the present invention, and the communication device 900 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present invention. It's concise, so I won't repeat it here.

Fig. 10 is a schematic structural diagram of a chip according to an embodiment of the present invention. The chip 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 can call and run a computer program from the memory to implement the method in the embodiment of the present invention.

Optionally, as shown in FIG. 10, the chip 1000 may further include a memory 1020. The processor 1010 can call and run a computer program from the memory 1020 to implement the method in the embodiment of the present invention.

The memory 1020 may be a separate device independent of the processor 1010, or may be integrated in the processor 1010.

Optionally, the chip 1000 may further include an input interface 1030. The processor 1010 can control the input interface 1030 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1000 may further include an output interface 1040. The processor 1010 can control the output interface 1040 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present invention, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present invention. For brevity, details are not described herein again.

It should be understood that the chip mentioned in the embodiment of the present invention may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.

It should be understood that the processor in the embodiment of the present invention may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present invention may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) ) And Direct Rambus RAM (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present invention may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. In other words, the memory in the embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

FIG. 11 is a schematic block diagram of a communication system 800 provided by an embodiment of the present application. As shown in FIG. 11, the communication system 800 includes a terminal device 810 and a network device 820. Here, the network device may include an active network device or a target network device.

Wherein, the terminal device 810 can be used to implement the corresponding functions implemented by the UE in the above method, and the network device 820 can be used to implement the method on the source network device side or the method on the target network device side by the network device. For the sake of brevity, the corresponding functions of, will not be repeated here.

The embodiment of the present invention also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device or the terminal device in the embodiment of the present invention, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention, for the sake of brevity , I won’t repeat it here.

The embodiment of the present invention also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device or the terminal device in the embodiment of the present invention, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention. For the sake of brevity, I won't repeat them here.

The embodiment of the present invention also provides a computer program.

Optionally, the computer program can be applied to the network device or the terminal device in the embodiment of the present invention. When the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention. , For the sake of brevity, I won’t repeat it here.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present invention.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided by the present invention, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. It should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A handover processing method, the method includes:

The terminal device receives the handover command sent by the source network device; wherein the handover command includes handover type indication information;

The terminal device sends instruction information to the source network device or the target network device;

Wherein, the indication information is used to indicate that the handover type adopted by the terminal device is the first type handover or the second type handover; wherein, the handover type adopted by the terminal device is based on the handover type indication information and the terminal device’s Ability to be determined.
The method according to claim 1, wherein the method further comprises:

If the handover type indication information is the first type of handover, it is determined whether the capability of the terminal device meets the configuration of the source network device and the configuration of the target network device;

If it is not satisfied, the terminal device determines to adopt the second type of handover.
The method according to claim 1, wherein the sending of instruction information by the terminal device to the source network device comprises:

Before performing the handover, the terminal device sends the instruction information to the source network device.
The method according to claim 3, wherein before the switching is performed, at least one of the following is performed:

After the terminal device receives the handover command;

Before the terminal device initiates downlink synchronization to the target network device;

Before the terminal device initiates random access to the target network device;

After the terminal device completes downlink synchronization with the target network device, and before initiating random access to the target network device.
The method according to claim 1, wherein if the terminal device determines to adopt the second type of handover, the indication information is also used to instruct the source network device to stop dispatching data to the terminal device.
The method according to claim 1, wherein when the terminal device sends instruction information to the target network device, the instruction information is carried by one of the following information:

MSG 1 in the four-step random access process;

MSG 3 in the four-step random access process;

MSG A in the two-step random access process;

Radio resource control RRC message after successful random access.
The method according to any one of claims 1-6, wherein the first type of handover is: during the handover process, the terminal device maintains the handover of the protocol stack between the source network device and the target network device;

The second type of handover is: a handover that releases the connection with the source network device after the terminal device receives a handover command.
A handover processing method, wherein the method includes:

The source network device sends a handover command to the terminal device; wherein the handover command includes handover type indication information;

The source network device receives the instruction information sent by the terminal device, the instruction information is used to indicate that the handover type used by the terminal device is the first type handover or the second type handover; wherein, the handover type used by the terminal device It is determined based on the handover type indication information and the capabilities of the terminal device.
The method according to claim 8, wherein the method further comprises:

The source network device stops scheduling data to the terminal device according to the instruction information;

Wherein, the indication information is used to instruct the terminal device to determine to adopt the second type of handover, and is also used to instruct the source network device to stop scheduling data to the terminal device.
The method according to claim 8 or 9, wherein the first type of handover is: during the handover process, the terminal device maintains the handover of the protocol stack between the source network device and the target network device;

The second type of handover is: a handover that releases the connection with the source network device after the terminal device receives a handover command.
A handover processing method, the method includes:

The target network device receives the instruction information sent by the terminal device;

The indication information is used to indicate that the handover type adopted by the terminal device is the first type handover or the second type handover; wherein the handover type adopted by the terminal device is determined based on the handover type indication information and the capability of the terminal device of.
The method according to claim 11, wherein the method further comprises:

When the indication information is used to indicate that the switching type adopted by the terminal device is the second type of switching, the target network device notifies the source network device to stop scheduling data to the terminal device.
The method according to claim 11, wherein the instruction information is carried by one of the following information:

MSG1 in the four-step random access process;

MSG3 in the four-step random access process;

MSGA in the two-step random access process;

RRC message after successful random access.
The method according to any one of claims 11-13, wherein the first type of handover is: during the handover process, the terminal device maintains the handover of the protocol stack between the source network device and the target network device;

The second type of handover is: a handover that releases the connection with the source network device after the terminal device receives a handover command.
A terminal device, including:

The first communication unit receives a handover command sent by a source network device; wherein the handover command includes handover type indication information; and sends the indication information to the source network device or the target network device;

Wherein, the indication information is used to indicate that the handover type adopted by the terminal device is the first type handover or the second type handover; wherein, the handover type adopted by the terminal device is based on the handover type indication information and the terminal device’s Ability to be determined.
The terminal device according to claim 15, wherein the terminal device further comprises:

The first processing unit, if the handover type indication information is to use the first type of handover, determine whether the capability of the terminal device meets the source network device configuration and the target network device configuration; if not, determine to use the second type handoff .
The terminal device according to claim 15, wherein the first communication unit sends the instruction information to the source network device before performing the handover.
The terminal device according to claim 17, wherein before the switching is performed, at least one of the following is performed:

After the terminal device receives the handover command;

Before the terminal device initiates downlink synchronization to the target network device;

Before the terminal device initiates random access to the target network device;

After the terminal device completes downlink synchronization with the target network device, and before initiating random access to the target network device.
The terminal device according to claim 15, wherein if it is determined to adopt the second type of handover, the indication information is also used to instruct the source network device to stop dispatching data to the terminal device.
The terminal device according to claim 15, wherein when the first communication unit sends instruction information to the target network device, the instruction information is carried by one of the following information:

MSG 1 in the four-step random access process;

MSG 3 in the four-step random access process;

MSG A in the two-step random access process;

Radio resource control RRC message after successful random access.
The terminal device according to any one of claims 15-20, wherein the first type of handover is: during the handover process, the terminal device maintains the switch of the protocol stack between the source network device and the target network device;

The second type of handover is: a handover that releases the connection with the source network device after the terminal device receives a handover command.
A source network device, including:

The second communication unit sends a handover command to the terminal device; wherein the handover command includes handover type indication information; and receives the indication information sent by the terminal device, where the indication information is used to instruct the terminal device to use The handover type is a first type handover or a second type handover; wherein the handover type adopted by the terminal device is determined based on the handover type indication information and the capability of the terminal device.
The source network device according to claim 22, wherein the source network device further comprises:

The second processing unit, according to the instruction information, stops scheduling data to the terminal device;

Wherein, the indication information is used to instruct the terminal device to determine to adopt the second type of handover, and is also used to instruct the source network device to stop scheduling data to the terminal device.
The source network device according to claim 22 or 23, wherein the first type of handover is: during the handover process, the terminal device maintains the handover of the protocol stack between the source network device and the target network device;

The second type of handover is: a handover that releases the connection with the source network device after the terminal device receives a handover command.
A target network device, including:

The third communication unit receives the instruction information sent by the terminal device;

The indication information is used to indicate that the handover type adopted by the terminal device is the first type handover or the second type handover; wherein the handover type adopted by the terminal device is determined based on the handover type indication information and the capability of the terminal device of.
The target network device according to claim 25, wherein the third communication unit, when the indication information is used to indicate that the handover type adopted by the terminal device is the second type handover, the target network device notifies the The source network device stops dispatching data to the terminal device.
The target network device according to claim 25, wherein the indication information is carried by one of the following information:

MSG1 in the four-step random access process;

MSG3 in the four-step random access process;

MSGA in the two-step random access process;

RRC message after successful random access.
The target network device according to any one of claims 25-27, wherein the first type of handover is: during the handover process, the terminal device maintains the handover of the protocol stack between the source network device and the target network device;

The second type of handover is: a handover that releases the connection with the source network device after the terminal device receives a handover command.
A terminal device includes a processor and a memory for storing a computer program that can run on the processor,

Wherein, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the steps of the method according to any one of claims 1-7.
A terminal device includes a processor and a memory for storing a computer program that can run on the processor,

Wherein, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the steps of the method according to any one of claims 8-14.
A chip comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1-7.
A chip comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 8-14.
A computer-readable storage medium used to store a computer program that enables a computer to execute the steps of the method according to any one of claims 1-14.
A computer program product comprising computer program instructions that cause a computer to execute the method according to any one of claims 1-14.
A computer program that causes a computer to execute the method according to any one of claims 1-14.