CN114258706A

CN114258706A - Switching processing method, terminal equipment and network equipment

Info

Publication number: CN114258706A
Application number: CN201980099423.4A
Authority: CN
Inventors: 尤心
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2022-03-29
Also published as: WO2021068230A1

Abstract

The invention discloses 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, wherein the method comprises the following steps: the terminal equipment receives a switching command sent by source network equipment; wherein, the switching command contains switching type indication information; the terminal equipment sends indication information to source network equipment or target network equipment; the indication information is used for indicating that the switching type adopted by the terminal equipment is first-type switching or second-type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.

Description

Switching processing method, terminal equipment and network equipment

Technical Field

The present invention relates to the field of information processing technologies, and in particular, to a handover processing method, a terminal device, a network device, a chip, a computer-readable storage medium, a computer program product, and a computer program.

Background

In the related art, the source base station starts to forward data to the target base station and sends a status report to the target base station after receiving the switching request feedback of the target base station, and the terminal equipment directly communicates with the target base station after successfully accessing the target base station. However, for the handover of a dual active protocol stack (dual active protocol stack), the terminal device may simultaneously maintain the connection between the source base station and the target base station, and in the handover in such a scenario, a problem that the handover types of the terminal device, the source base station and the target base station are not matched may occur, which may cause a problem of useless data transmission and a problem of a large time delay of the handover.

Disclosure of Invention

To solve the foregoing technical problem, embodiments of the present invention provide a handover processing method, a terminal device, a network device, a chip, a computer-readable storage medium, a computer program product, and a computer program.

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

the terminal equipment receives a switching command sent by source network equipment; wherein, the switching command contains switching type indication information;

the terminal equipment sends indication information to source network equipment or target network equipment;

the indication information is used for indicating that the switching type adopted by the terminal equipment is first-type switching or second-type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.

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

the source network equipment sends a switching command to the terminal equipment; wherein, the switching command contains switching type indication information;

the source network equipment receives indication information sent by terminal equipment, wherein the indication information is used for indicating that the switching type adopted by the terminal equipment is first-type switching or second-type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.

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

the target network equipment receives the indication information sent by the terminal equipment;

the indication information is used for indicating that the switching type adopted by the terminal equipment is first type switching or second type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.

In a fourth aspect, a terminal device is provided, which includes:

a first communication unit for receiving a switching command sent by a source network device; wherein, the switching command contains switching type indication information; sending indication information to source network equipment or target network equipment;

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

the second communication unit is used for sending a switching command to the terminal equipment; wherein, the switching command contains switching type indication information; receiving indication information sent by terminal equipment, wherein the indication information is used for indicating that the switching type adopted by the terminal equipment is first-type switching or second-type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.

In a sixth aspect, a target network device is provided, comprising:

a third communication unit for receiving the instruction information sent by the terminal device;

In a seventh aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.

In an eighth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the second aspect, the third aspect or each implementation manner thereof.

In a ninth aspect, a chip is provided for implementing the methods in the foregoing implementation manners.

Specifically, the chip includes: a processor configured to call and run the computer program from the memory, so that the device on which the chip is installed performs the method according to the first aspect to the third aspect or the implementation manners thereof.

A tenth aspect provides a computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method of the first to third aspects or the implementations thereof.

In an eleventh aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of the first to third aspects or implementations thereof.

In a twelfth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of the first to third aspects or implementations thereof.

By adopting the scheme, the terminal equipment can determine the adopted switching type according to the switching type indication information in the switching command and the self capacity, and further send the indication information to the source network equipment or the target network equipment through the indication information so as to inform the network side terminal equipment of adopting the first type switching or the second type switching. Therefore, the terminal equipment can be matched with the switching type of the network side, useless data transmission caused by mismatching of the switching type of the terminal equipment and the switching type of the network side is avoided, and the problem of switching time delay caused by mismatching of the switching type is avoided.

Drawings

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

fig. 2 is a first flowchart illustrating a handover processing method according to an embodiment of the present invention;

fig. 3 is a schematic flow chart of a handover processing method according to an embodiment of the present invention;

fig. 4 is a third schematic flow chart of a handover processing method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a handover process;

fig. 6 is a schematic diagram of a structure of a terminal device according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a component structure of a source network device according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a target network device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a communication device according to 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 two of a communication system architecture provided in an embodiment of the present application.

Detailed Description

So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.

For example, a 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 UE120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with UEs located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Network device (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 also includes at least one UE120 located within the coverage area of the network device 110. "UE" as used herein includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or another UE's device configured to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A UE that is arranged to communicate over a radio interface may be referred to as a "radio communication terminal", "radio terminal" or "mobile terminal".

Optionally, a Device to Device (D2D) communication may be performed between UEs 120.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

An embodiment of the present invention provides a handover processing method, as shown in fig. 2, the method includes:

step 21: the terminal equipment receives a switching command sent by source network equipment; wherein, the switching command contains switching type indication information;

step 22: the terminal equipment sends indication information to source network equipment or target network equipment;

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

step 31: the source network equipment sends a switching command to the terminal equipment; wherein, the switching command contains switching type indication information;

As shown in fig. 4, a handover processing method at a target network device side includes:

step 41: the target network equipment receives the indication information sent by the terminal equipment;

The first category provided above switches to: and keeping the protocol stack switching between the target network equipment and the source network equipment in the switching process. The second type of handover is: and releasing the switching of the connection with the source network equipment after the terminal equipment receives the switching command.

Specifically, the first type of handover may be an Enhanced chain-first-before-chain-break (eMBB) handover, or may be a dual active protocol stack (dual active protocol stack) handover. Other names may exist as long as the handover procedure capable of maintaining the connection with the target network device and the source network device at the time of handover is within the scope of the present embodiment.

The second type of handover may include a conventional handover or a Make Before Break (MBB). The conventional handover may be understood as a process of breaking a link and then building a link, for example, the process may include that the terminal device releases a connection with the source network device when receiving a handover command, and performs a handover process according to a target network device in the handover command, which may include initiating a random access, and the like.

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

In a handover scenario, a handover scenario in the second type of handover is described, and similar to the LTE system, a New Radio (NR) system supports a handover procedure of a connected terminal device. When a terminal device using network service moves from one cell to another cell, or due to the adjustment of wireless transmission service load, the activation of operation maintenance, device failure, etc., in order to ensure the continuity of communication and the quality of service, the system transfers the communication link between the terminal device and the source cell to a new cell, i.e., performs a handover procedure. Taking an Xn interface switching process as an example, a corresponding switching process is described, where the whole switching process is divided into the following three stages, as shown in fig. 5, including:

a switching preparation stage: as shown in steps 0-5 of fig. 5, the target network device and the source network device perform processing according to the Mobility control information provided by the Access and Mobility Management Function entity (AMF); the terminal equipment performs measurement control and report, the source network equipment performs switching decision, and then the source network equipment performs switching request, management control and switching request confirmation to the target network equipment. The handover confirmation message contains the handover command generated by the target network device, and the source network device is not allowed to modify the handover command generated by the target network device and directly forwards the handover command to the terminal device.

A switching execution stage: as shown in step 6-7 in fig. 5, the terminal device immediately executes a handover process after receiving the handover command, which may include performing Radio Access Network (RAN) handover between the terminal device and the source Network device, and the terminal device disconnects the source Network device, synchronizes with the target Network device, and establishes a connection (e.g., executes random Access, sends an RRC handover complete message to the target base station, etc.); SN state transfer; the method may further include the active network device transmitting new data of a User Plane Function (UPF) and transmitting the buffered data to the target network device.

And a switching completion stage: as shown in steps 8-12 in fig. 5, after the RAN handover is completed, the terminal device performs user data transmission between the target network device and the UPF; then the target network device and the AMF send a path switching request, the UPF executes the path switching, then the AMF informs the target network device of the completion of the path switching through the source network device, the AMF sends a path switching request confirmation to the target network device, and then the target network device informs the source network device of the release of the user data.

Yet another switching scenario may be one that includes the following two architectures:

based on the switching of the double connection, under the condition, when switching, the target network equipment is added as an auxiliary contact (SN), then the SN is changed into a Main Node (MN) through role switching signaling, and finally the source network equipment is released, so that the effect of reducing the interruption time during switching is achieved.

Another architecture is a handover, which can be understood as an eMBB handover, in which the connection with the source network device and the target network device is maintained at the same time, but the terminal device continues to maintain the connection with the source network device and initiates random access to the target network device when receiving a handover command (HO command), and the connection with the source network device is not released until the access between the terminal device and the target network device is completed.

Further, the following limitations are added: 1. in the 0ms handover, simultaneous UpLink (UL) Physical UpLink Shared Channel (PUSCH) transmission does not need to be supported; 2. after receiving the first UL grant sent by the target network device (i.e., the target base station), the UL PUSCH is handed over by the source network device to the target network device.

Based on the foregoing various switching scenarios, the scheme provided by this embodiment may include the following examples:

examples 1, 1,

The terminal equipment receives a switching command sent by source network equipment; wherein, the switching command contains switching type indication information; and the terminal equipment sends the indication information to the source network equipment.

That is, in the present processing method, after the terminal device determines the handover type, the terminal device transmits corresponding instruction information to the source network device to instruct the determined handover type. For example, if the terminal device determines to adopt the first type handover, the source network device is notified in the indication information that the handover type is the first type handover; if the terminal equipment determines to adopt the second type of switching, the source network equipment is informed that the switching type is the second type of switching in the indication information.

The method for determining the handover type by the terminal device may be as follows:

if the switching type indication information is switching in a first type, judging whether the capability of the terminal equipment meets the configuration of source network equipment and the configuration of target network equipment;

and if not, the terminal equipment determines to adopt the second type of switching.

Specifically, if the source network device indicates the terminal device to adopt the first-type handover in the handover command sent to the terminal device, but the source network device configuration and the target network device configuration exceed the capability of the terminal device, the terminal device does not adopt the first-type handover but adopts the second-type handover; on the contrary, if the source network device configuration and the target network device configuration do not exceed the capability of the terminal device, the terminal device uses the handover type indicated in the handover command, that is, uses the first type handover.

The obtaining mode of the source network device configuration and the target network device configuration may be: the source network device is the network device which provides service for the terminal device at present, so the terminal device has already acquired the configuration of the source network device; the target network device configuration may be carried in the handover command, and accordingly, the terminal device may obtain the target network device configuration from the handover command.

Further, the source network device configuration (or the target network device configuration) may be understood as a relevant configuration of the terminal device on the source network device side, for example, a Carrier Aggregation (CA), Dual Connectivity (DC), or the like configuration may be included. Accordingly, the determination as to whether the capability of the terminal device is exceeded may be that the terminal device satisfies the source network device configuration and the target network device configuration if the source network device configuration and the target network device configuration contain DCs and the capability of the terminal device characterizes that it supports dual connectivity. Of course, other methods of determination are possible and are not exhaustive.

In addition, there may be a case where the terminal device is indicated in the handover type indication information of the source network device to adopt the second type of handover, but the terminal device determines that the first type of handover can be adopted based on its own capability and the network device configuration, and then the source network device may be notified in the indication information in a manner of adopting the first type of handover; otherwise, the source network device is informed that the terminal device adopts the second type switching mode.

In this processing manner, the time point when the terminal device sends the indication information to the source network device may be:

and the terminal equipment sends the indication information to the source network equipment before executing the switching.

Specifically, before the performing of the handover, at least one of the following time points may be used:

after the terminal equipment receives the switching command;

before the terminal equipment initiates downlink synchronization to target network equipment;

before the terminal equipment initiates random access to target network equipment;

after the terminal device and the target network device complete downlink synchronization and before random access is initiated to the target network device.

Several of the cases may be used in combination, or may be used separately, for example, after receiving the handover command, the cases may be used in combination before the terminal device initiates downlink synchronization to the target network device, and the indication information may be sent at any time point in the period of time; the indication information may be sent along with information exchanged between the terminal device and the source network device, for example, the indication information may be carried in a certain piece of information in an added manner, or for example, the indication 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 devices may be used in combination, so that the indication information is sent at any time point in the time length; the indication information may be sent along with information exchanged between the terminal device and the source network device, for example, the indication information may be carried in a certain piece of information in an added manner, or for example, the indication information may be sent separately.

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

Before the random access, 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.

On the basis of the foregoing determination of the handover type and the sending of the indication information, if the terminal device determines to employ the second type of handover, the indication information is further configured to instruct the source network device to stop scheduling data to the terminal device.

Accordingly, the processing of the source network device may include: the source network equipment receives the indication information and stops scheduling data to the terminal equipment; the indication information is used for indicating the terminal device to determine to adopt the second type of switching, and is also used for indicating the source network device to stop scheduling data to the terminal device.

That is, if the terminal device employs the second type handover, the connection with the source network device and the target network device may be disconnected without notifying the holding protocol stack, so that if the terminal device notifies the source network device of the second type handover, the terminal device simultaneously notifies the source network device not to send downlink data to the terminal device any more.

Of course, the source network device may not be instructed to stop scheduling data to the terminal device in the indication information; in this case, the source network device may stop scheduling data to the terminal device as long as it is determined that the terminal device employs the second type handover according to the indication information, as specified by the protocol.

Further, the source network device may also send the handover type of the terminal device to the target network device; of course, the information may not be transmitted to the target network device, and is not limited herein.

Examples 2,

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

Specifically, the terminal device receives a switching command sent by the source network device; wherein, the switching command contains switching type indication information; and the terminal equipment sends the indication information to the target network equipment.

Correspondingly, the target network equipment receives the indication information sent by the terminal equipment.

That is, in the present processing method, after the terminal device determines the handover type, the terminal device transmits corresponding instruction information to the target network device to instruct the determined handover type. For example, if the terminal device determines to adopt the first type handover, the target network device is notified in the indication information that the handover type is the first type handover; and if the terminal equipment determines to adopt the second type of switching, informing the target network equipment that the switching type is the second type of switching in the indication information.

The method for determining the switching type of the terminal equipment comprises the following steps: if the switching type indication information is switching in a first type, judging whether the capability of the terminal equipment meets the configuration of source network equipment and the configuration of target network equipment; and if not, the terminal equipment determines to adopt the second type of switching. This part of the processing is the same as in example 1 described above, and therefore, the description thereof is omitted.

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

four steps of MSG1 in the random access process;

four steps of MSG3 in the random access process;

MSG A in the two-step random access process;

and a Radio Resource Control (RRC) message after the random access is successful.

The RRC message after the random access is successful may be a first RRC message sent by the terminal device to the target network device after the random access is completed, may also be an RRC message after a preset time interval after the random access is completed, or may be any one of the RRC messages, which is not exhaustive here.

Based on the foregoing determining the handover type and sending the indication information to the target network device, if the indication information sent by the terminal device to the target network device indicates that the terminal device employs the second type of handover, the processing of the target network device further includes: and when the indication information is used for indicating that the switching type adopted by the terminal equipment is the second type switching, the target network equipment informs the source network equipment of stopping scheduling data to the terminal equipment.

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

That is, if the terminal device employs the second type handover, the connection between the terminal device and the source network device may be disconnected without simultaneously maintaining the connection of the protocol stack with the source network device and the target network device, and therefore, if the terminal device notifies the target network device to employ the second type handover, the target network device notifies the source network device that downlink data is no longer sent to the terminal device.

Finally, it should be noted that, in addition to the foregoing example 1 and example 2, which may be implemented separately, example 1 and example 2 may also be used in combination, that is, the terminal device may send, based on the scheme provided in example 1, indication information to the source network device after receiving the handover command (or, to indicate that the sent objects are different, the indication information sent to the source network device may be understood as first indication information) for indicating the handover type of the terminal device; furthermore, in order to avoid a situation that the source network device does not receive the indication information due to some problems, the scheme provided in example 2 may be combined, and after the terminal device is successfully switched, the indication information is also sent to the target network device (or, in order to indicate that the sent objects are different, the indication information sent to the target network device may be understood as the second indication information) to indicate the switching type of the terminal device to the target network device.

By adopting the scheme, the terminal equipment can determine the adopted switching type according to the switching type indication information in the switching command and the self capacity, and further send the indication information to the source network equipment or the target network equipment through the indication information so as to inform the network side terminal equipment of adopting the first type switching or the second type switching. Therefore, the terminal equipment can be matched with the switching type of the network side, and the problems of useless data transmission and time delay caused by the fact that the switching type of the terminal equipment is not matched with that of the network side are solved.

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

a first communication unit 61 for receiving a handover command from a source network device; wherein, the switching command contains switching type indication information; sending indication information to the source network equipment or the target network equipment;

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

a second communication unit 71 that transmits a handover command to the terminal device; wherein, the switching command contains switching type indication information; receiving indication information sent by terminal equipment, wherein the indication information is used for indicating that the switching type adopted by the terminal equipment is first-type switching or second-type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.

As shown in fig. 8, a target network device provided in an embodiment of the present invention includes:

a third communication unit 81 for receiving instruction information transmitted from the terminal device;

The scheme provided by the embodiment can include the following examples:

examples 1, 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 switching command contains switching type indication information; the first communication unit 61 of the terminal device sends the indication information to the source network device.

a first processing unit 62, if the handover type indication information is the first type handover, determining whether the capability of the terminal device meets the source network device configuration and the target network device configuration,

and if not, determining to adopt the second type of switching.

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

after the terminal equipment receives the switching command;

Accordingly, 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 indication information; the indication information is used for indicating the terminal device to determine to adopt the second type of switching, and is also used for indicating the source network device to stop scheduling data to the terminal device.

Examples 2,

Specifically, the first communication unit 61 of the terminal device receives a handover command sent by the source network device; wherein, the switching command contains switching type indication information; the first communication unit 61 of the terminal device transmits the instruction information to the target network device.

Accordingly, the third communication unit 81 of the target network device receives the instruction information transmitted from the terminal device.

The manner in which the terminal device determines its handover type is the same as in example 1, and therefore, the description thereof is omitted.

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

four steps of MSG1 in the random access process;

four steps of MSG3 in the random access process;

MSG A in the two-step random access process;

Based on the foregoing determining the handover type and sending the indication information to the target network device, if the indication information sent by the terminal device to the target network device indicates that the terminal device employs the second type of handover, the processing of the target network device further includes: a third communication unit 81, configured to notify the source network device to stop scheduling data to the terminal device when the indication information is used to indicate that the handover type adopted by the terminal device is the second type handover.

Accordingly, 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, where the communication device in this embodiment may be embodied as a 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 a 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. From the memory 920, the processor 910 may call and execute a computer program to implement the method in the embodiment of the present invention.

The memory 920 may be a separate device from 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, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 930 may include a transmitter and a receiver, among others. The transceiver 930 may further include one or more antennas.

Optionally, the communication device 900 may specifically be a network device according to the embodiment of the present invention, and the communication device 900 may implement a corresponding process implemented by the network device in each method according to the embodiment of the present invention, which is not described herein again for brevity.

Optionally, the communication device 900 may specifically be a terminal device or a network device in the embodiment of the present invention, and the communication device 900 may implement a corresponding process implemented by a mobile terminal/a terminal device in each method in the embodiment of the present invention, and for brevity, details are not described here again.

Fig. 10 is a schematic structural diagram of a chip of an embodiment of the present invention. The chip 1000 shown in fig. 10 includes a processor 1010, and the processor 1010 may call and execute a computer program from a 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. From memory 1020, processor 1010 may retrieve and execute computer programs to implement the methods of embodiments of the present invention.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

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

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

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

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

It should be understood that the processor of embodiments of the present invention may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present invention may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

Fig. 11 is a schematic block diagram of a communication system 800 provided in 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.

The terminal device 810 may be configured to implement the corresponding function implemented by the UE in the foregoing method, and the network device 820 may be configured to implement the corresponding function implemented by the network device in the method of the source network device side or the method of the target network device side, which is not described herein again for brevity.

The embodiment of the invention also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to a network device or a terminal device in the embodiment of the present invention, and the computer program enables a computer to execute corresponding processes implemented by the network device in each method in the embodiment of the present invention, which is not described herein again for brevity.

Embodiments of the present invention also provide a computer program product, which includes computer program instructions.

Optionally, the computer program product may be applied to a network device or a terminal device in the embodiment of the present invention, and the computer program instruction enables a computer to execute corresponding processes implemented by the network device in each method in the embodiment of the present invention, which is not described herein again for brevity.

The embodiment of the invention also provides a computer program.

Optionally, the computer program may be applied to the network device or the terminal device in the embodiment of the present invention, and when the computer program runs on a computer, the computer is enabled to execute corresponding processes implemented by the network device in the methods in the embodiment of the present invention, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

A method of handover processing, the method comprising:

the terminal equipment receives a switching command sent by source network equipment; wherein, the switching command contains switching type indication information;

the terminal equipment sends indication information to source network equipment or target network equipment;

the indication information is used for indicating that the switching type adopted by the terminal equipment is first-type switching or second-type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.
The method of claim 1, wherein the method further comprises:

if the switching type indication information is switching in a first type, judging whether the capability of the terminal equipment meets the configuration of source network equipment and the configuration of target network equipment;

and if not, the terminal equipment determines to adopt the second type of switching.
The method of claim 1, wherein the terminal device sending indication information to a source network device comprises:

and the terminal equipment sends the indication information to the source network equipment before executing the switching.
The method of claim 3, wherein the performing the handover is preceded by at least one of:

after the terminal equipment receives the switching command;

before the terminal equipment initiates downlink synchronization to target network equipment;

before the terminal equipment initiates random access to target network equipment;

after the terminal device and the target network device complete downlink synchronization and before random access is initiated to the target network device.
The method according to claim 1, wherein the indication information is further used for indicating the source network device to stop scheduling data to the terminal device if the terminal device determines to adopt the second type of handover.
The method of claim 1, wherein when the terminal device sends the indication information to the target network device, the indication information is carried by one of the following information:

four steps of MSG1 in the random access process;

four steps of MSG3 in the random access process;

MSG A in the two-step random access process;

and after the random access is successful, controlling the RRC message by the radio resource.
The method according to any of claims 1-6, wherein the first type of handover is: the terminal equipment keeps the switching of the protocol stacks between the terminal equipment and the source network equipment and between the terminal equipment and the target network equipment in the switching process;

the second type of handover is: and releasing the switching of the connection with the source network equipment after the terminal equipment receives the switching command.
A handover processing method, wherein the method comprises:

the source network equipment sends a switching command to the terminal equipment; wherein, the switching command contains switching type indication information;

the source network equipment receives indication information sent by terminal equipment, wherein the indication information is used for indicating that the switching type adopted by the terminal equipment is first-type switching or second-type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.
The method of claim 8, wherein the method further comprises:

the source network equipment stops scheduling data to the terminal equipment according to the indication information;

the indication information is used for indicating the terminal device to determine to adopt the second type of switching, and is also used for indicating 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: the terminal equipment keeps the switching of the protocol stacks between the terminal equipment and the source network equipment and between the terminal equipment and the target network equipment in the switching process;

the second type of handover is: and releasing the switching of the connection with the source network equipment after the terminal equipment receives the switching command.
A method of handover processing, the method comprising:

the target network equipment receives the indication information sent by the terminal equipment;

the indication information is used for indicating that the switching type adopted by the terminal equipment is first type switching or second type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.
The method of claim 11, wherein the method further comprises:

and when the indication information is used for indicating that the switching type adopted by the terminal equipment is the second type switching, the target network equipment informs the source network equipment of stopping scheduling data to the terminal equipment.
The method of claim 11, wherein the indication information is carried by one of:

MSG1 in the four-step random access process;

MSG3 in the four-step random access process;

MSGA in the two-step random access process;

and RRC message after the random access is successful.
The method according to any of claims 11-13, wherein the first type of handover is: the terminal equipment keeps the switching of the protocol stacks between the terminal equipment and the source network equipment and between the terminal equipment and the target network equipment in the switching process;

the second type of handover is: and releasing the switching of the connection with the source network equipment after the terminal equipment receives the switching command.
A terminal device, comprising:

a first communication unit for receiving a switching command sent by a source network device; wherein, the switching command contains switching type indication information; sending indication information to source network equipment or target network equipment;

the indication information is used for indicating that the switching type adopted by the terminal equipment is first-type switching or second-type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.
The terminal device of claim 15, wherein the terminal device further comprises:

the first processing unit is used for judging whether the capability of the terminal equipment meets the configuration of source network equipment and the configuration of target network equipment or not if the switching type indication information adopts first type switching; and if not, determining to adopt the second type of switching.
The terminal device according to claim 15, wherein the first communication unit transmits the indication information to the source network device before performing handover.
The terminal device of claim 17, wherein the performing of the handover is preceded by at least one of:

after the terminal equipment receives the switching command;

before the terminal equipment initiates downlink synchronization to target network equipment;

before the terminal equipment initiates random access to target network equipment;

after the terminal device and the target network device complete downlink synchronization and before random access is initiated to the target network device.
The terminal device of claim 15, wherein the indication information is further configured to instruct the source network device to stop scheduling data to the terminal device if it is determined that the second type handover is adopted.
The terminal device of claim 15, wherein when the first communication unit sends the indication information to the target network device, the indication information is carried by one of the following information:

four steps of MSG1 in the random access process;

four steps of MSG3 in the random access process;

MSG A in the two-step random access process;

and after the random access is successful, controlling the RRC message by the radio resource.
The terminal device according to any of claims 15-20, wherein the first type of handover is: the terminal equipment keeps the switching of the protocol stacks between the terminal equipment and the source network equipment and between the terminal equipment and the target network equipment in the switching process;

the second type of handover is: and releasing the switching of the connection with the source network equipment after the terminal equipment receives the switching command.
A source network device, comprising:

the second communication unit is used for sending a switching command to the terminal equipment; wherein, the switching command contains switching type indication information; receiving indication information sent by terminal equipment, wherein the indication information is used for indicating that the switching type adopted by the terminal equipment is first-type switching or second-type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.
The source network device of claim 22, wherein the source network device further comprises:

the second processing unit stops scheduling data to the terminal equipment according to the indication information;

the indication information is used for indicating the terminal device to determine to adopt the second type of switching, and is also used for indicating the source network device to stop scheduling data to the terminal device.
The source network device of claim 22 or 23, wherein the first type of handover is: the terminal equipment keeps the switching of the protocol stacks between the terminal equipment and the source network equipment and between the terminal equipment and the target network equipment in the switching process;

the second type of handover is: and releasing the switching of the connection with the source network equipment after the terminal equipment receives the switching command.
A target network device, comprising:

a third communication unit for receiving the instruction information sent by the terminal device;

the indication information is used for indicating that the switching type adopted by the terminal equipment is first type switching or second type switching; and the switching type adopted by the terminal equipment is determined based on the switching type indication information and the capability of the terminal equipment.
The target network device according to claim 25, wherein the third communication unit notifies the source network device to stop scheduling data to the terminal device when the indication information indicates that the handover type adopted by the terminal device is the second type handover.
The target network device of claim 25, wherein the indication information is carried by one of:

MSG1 in the four-step random access process;

MSG3 in the four-step random access process;

MSGA in the two-step random access process;

and RRC message after the random access is successful.
The target network device of any of claims 25-27, wherein the first type of handover is: the terminal equipment keeps the switching of the protocol stacks between the terminal equipment and the source network equipment and between the terminal equipment and the target network equipment in the switching process;

the second type of handover is: and releasing the switching of the connection with the source network equipment after the terminal equipment receives the switching command.
A terminal device, comprising: a processor and a memory for storing a computer program capable of running on the processor,

wherein the memory is adapted to store a computer program and the processor is adapted to call and run the computer program stored in the memory to perform the steps of the method according to any of claims 1-7.
A terminal device, comprising: a processor and a memory for storing a computer program capable of running on the processor,

wherein the memory is adapted to store a computer program and the processor is adapted to call and run the computer program stored in the memory to perform the steps of the method according to any of claims 8-14.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1-7.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 8-14.
A computer-readable storage medium for storing a computer program for causing a computer to perform the steps of the method according to any one of claims 1 to 14.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 14.
A computer program for causing a computer to perform the method of any one of claims 1-14.