CN114342555A

CN114342555A - Cell switching method, electronic equipment and storage medium

Info

Publication number: CN114342555A
Application number: CN201980099905.XA
Authority: CN
Inventors: 杨宁
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2022-04-12
Anticipated expiration: 2039-11-15
Also published as: WO2021092940A1; CN114342555B

Abstract

A cell handover method, comprising: the terminal device (120) receives first indication information sent by a source network device, wherein the first indication information is used for indicating that configuration information of a target cell of conditional Cell Handover (CHO) is invalid (S201).

Description

Cell switching method, electronic equipment and storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a cell switching method, an electronic device, and a storage medium.

Background

In the related art, when a terminal device (User Equipment, UE) performs Conditional Cell HandOver (CHO), if a source network device modifies configuration information of a target cell of the CHO, cell HandOver failure of the terminal device may be caused.

Disclosure of Invention

In order to solve the foregoing technical problem, embodiments of the present application provide a cell switching method, an electronic device, and a storage medium, which can improve a success rate of cell switching of a terminal device.

In a first aspect, an embodiment of the present application provides a cell handover method, including: the terminal equipment receives first indication information sent by source network equipment, wherein the first indication information is used for indicating that the configuration information of the target cell of the CHO is invalid.

In a second aspect, an embodiment of the present application provides a cell handover method, including: the network equipment sends first indication information to the terminal equipment, wherein the first indication information is used for indicating that the configuration information of the target cell of the CHO is invalid.

In a third aspect, an embodiment of the present application provides a terminal device, where the terminal device includes: the receiving unit is configured to receive first indication information sent by a source network device, where the first indication information is used to indicate that configuration information of a target cell of the CHO is invalid.

In a fourth aspect, an embodiment of the present application provides a source network device, where the source network device includes: the sending unit is configured to send first indication information to the terminal device, wherein the first indication information is used for indicating that the configuration information of the target cell of the CHO is invalid.

In a fifth aspect, an embodiment of the present application provides a terminal device, including a processor and a memory, where the memory is used for storing a computer program that can be executed on the processor, and the processor is configured to execute the steps of the cell handover method executed by the terminal device when the processor executes the computer program.

In a sixth aspect, an embodiment of the present application provides a source network device, including a processor and a memory, where the memory is used for storing a computer program that can be executed on the processor, and when the processor is used for executing the computer program, the method for performing cell handover performed by the source network device is performed.

In a seventh aspect, an embodiment of the present application provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the cell switching method executed by the terminal equipment.

In an eighth aspect, an embodiment of the present application provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the cell switching method executed by the network equipment.

In a ninth aspect, an embodiment of the present application provides a storage medium, which stores an executable program, and when the executable program is executed by a processor, the cell handover method executed by the terminal device is implemented.

In a tenth aspect, an embodiment of the present application provides a storage medium, which stores an executable program, and when the executable program is executed by a processor, the cell handover method performed by the network device is implemented.

In an eleventh aspect, an embodiment of the present application provides a computer program product, which includes computer program instructions, and the computer program instructions enable a computer to execute the cell handover method executed by the terminal device.

In a twelfth aspect, an embodiment of the present application provides a computer program product, which includes computer program instructions, where the computer program instructions enable a computer to execute the cell handover method executed by the network device.

In a thirteenth aspect, an embodiment of the present application provides a computer program, where the computer program enables a computer to execute a cell handover method executed by the terminal device.

In a fourteenth aspect, an embodiment of the present application provides a computer program, where the computer program enables a computer to execute the cell handover method executed by the network side device.

The cell switching method, the electronic device and the storage medium provided by the embodiment of the application comprise the following steps: the terminal equipment receives first indication information sent by source network equipment, wherein the first indication information is used for indicating that the configuration information of the target cell of the CHO is invalid. Therefore, the problem of cell switching failure caused by the fact that the terminal equipment accesses the target cell by using the configuration information of the target cell of the failed CHO can be solved, and the success rate of cell switching of the terminal equipment is improved.

Drawings

Fig. 1 is a schematic flow chart of cell handover in the present application;

FIG. 2 is a schematic diagram of a CHO handover procedure of the present application;

fig. 3 is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 4 is a schematic diagram of an alternative processing flow of a cell handover method according to an embodiment of the present application;

fig. 5 is a schematic view of an optional processing flow of performing cell switching by a terminal device according to an embodiment of the present application, where the terminal device receives new configuration information of a target cell sent by a source network device;

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

fig. 7 is a schematic structural diagram of a source network device according to an embodiment of the present application;

fig. 8 is a schematic diagram of a hardware component structure of an electronic device according to an embodiment of the present application.

Detailed Description

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

Before describing the cell handover method provided in the embodiment of the present application in detail, a cell handover process in the related art is briefly described.

Currently, with the pursuit of speed, delay, high-speed mobility, energy efficiency, and diversity and complexity of services in future life, the 3GPP international standards organization has begun to develop 5G. The main application scenarios of 5G are: enhanced Mobile Ultra wide band (eMBB), Low Latency high reliability Communications (URLLC), and Massive Machine Type Communications (mMTC).

The eMBB still targets users to obtain multimedia content, services and data, and its demand is growing very rapidly. On the other hand, because the eMBB may be deployed in different scenarios, such as indoor, urban, rural, etc., and the difference between the capabilities and the requirements is relatively large, it cannot be said in a general way, and it is necessary to analyze in detail in combination with a specific deployment scenario. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety, and the like. Typical characteristics of mtc include: high connection density, small data volume, insensitive time delay service, low cost and long service life of the module, etc.

Similar to the LTE system, a New radio (New ratio, 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 reasons such as adjustment of wireless transmission service load, activation of operation maintenance, device failure, etc., in order to ensure communication continuity and service quality, the system needs to transfer a communication link between the terminal device and an original cell to a new cell, i.e., to perform a handover procedure.

Taking an Xn interface handover process as an example, the cell handover process applicable to the LTE system and the NR system is divided into the following three stages as shown in fig. 1:

phase 1 (including steps 1 to 5), handover preparation: including measurement control and reporting, handover requests, and acknowledgements.

Stage 2 (comprising steps 6 to 8), the handover is performed: the terminal equipment immediately executes the switching process after receiving the switching command, namely the terminal equipment disconnects the source cell and is connected with the target cell (for example, random access is executed, and an RRC switching completion message is sent to the target network equipment and the like); and (4) state transfer and data forwarding of a Secondary Node (SN).

Stage 3 (including steps 9 to 12), handover complete: the target cell and (AMF) and the User Plane Function (UPF) perform Path switching (Path Switch), releasing the terminal device context of the source network device.

CHO is briefly described below.

For the problems of frequent handover and easy failure of handover in high-speed mobile scenarios and high-frequency deployment scenarios, 3GPP is currently discussing the introduction of CHO for LTE and NR systems. In the CHO handover procedure, as shown in fig. 2, the terminal device performs cell measurement, configuration, and reporting according to the configuration information and measurement configuration of the target cell sent by the source network device; switching preparation is carried out on source network equipment and target network equipment; when the terminal device determines that the handover execution condition for the CHO of the target cell is satisfied, the terminal device executes the handover to the target cell (for example, triggering a random access procedure and sending a handover completion message) according to a preconfigured CHO command (command), and further establishes a connection with the target network device. In the CHO process, the problem that the terminal equipment cannot timely or cannot send the measurement report and cannot receive the switching command due to the fact that the terminal equipment moves at a high speed to enter an area with poor coverage is solved by configuring the CHO command for the terminal equipment in advance. The CHO command comprises configuration information of a target cell and a CHO switching execution condition configuration; the handover execution condition configuration of the CHO is determined by the source network device, and the source network device transmits the determined handover execution condition configuration of the CHO to the terminal device through a Radio Resource Control (RRC) message.

Under the condition that the source network equipment needs to modify the configuration information of the source cell and the configuration information of the CHO target cell, the source network equipment sends the modified configuration information of the source cell to the target network equipment, and the target network equipment generates new configuration information of the CHO target cell based on the modified configuration information of the source cell; the source network device then configures the modified configuration information of the target cell of the CHO and/or the new switching execution condition of the CHO, and sends the configuration information and/or the new switching execution condition of the CHO to the terminal device through the RRC reconfiguration message. However, the terminal device may trigger CHO before receiving the RRC reconfiguration message; and the UE may access the target cell using the configuration information of the target cell of the CHO that has failed or before modification, resulting in a handover failure of the CHO.

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, a LTE frequency division duplex (frequency division duplex, FDD) system, a LTE time division duplex (time division duplex, TDD) system, an advanced long term evolution (advanced long term evolution, LTE-a) system, a new radio (new NR) system, an LTE system of an NR system, an LTE (long term evolution-unlicensed-universal-radio, LTE-unlicensed-universal-radio, an NR system of an unlicensed band, an LTE (non-licensed-universal-radio, NR) system of an unlicensed band, an NR system of a mobile-radio (unlicensed-universal-radio, LTE-unlicensed-universal-radio, NR) system of an unlicensed band, an NR system of a mobile-radio (unlicensed band, an NR) system of an unlicensed band, an NR system of a mobile-unlicensed band, an NR system of an unlicensed band, an unlicensed band-universal-radio, an NR system of a radio-unlicensed band, an NR system of a mobile-radio system, UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, Wireless Local Area Network (WLAN), wireless fidelity (WiFi), next generation communication system, or other communication system.

Generally, conventional communication systems support a limited number of connections and are easy to implement, however, with the development of communication technology, mobile communication systems will support not only conventional communication, but also, for example, device to device (D2D) communication, machine to machine (M2M) communication, Machine Type Communication (MTC), and vehicle to vehicle (V2V) communication, and the embodiments of the present application can also be applied to these communication systems.

The system architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

The network device related in this embodiment may be a common base station (e.g., a NodeB or an eNB or a gNB), a new radio controller (NR controller), a centralized network element (centralized unit), a new radio base station, a radio remote module, a micro base station, a relay (relay), a distributed network element (distributed unit), a reception point (TRP), a Transmission Point (TP), or any other device. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices. For convenience of description, in all embodiments of the present application, the above-mentioned apparatus for providing a wireless communication function for a terminal device is collectively referred to as a network device.

In the embodiment of the present application, the terminal device may be any terminal, for example, the terminal device may be a user equipment for machine type communication. That is, the terminal device may also be referred to as user equipment UE, a Mobile Station (MS), a mobile terminal (mobile terminal), a terminal (terminal), etc., and the terminal device may communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal device may be a mobile phone (or referred to as a "cellular" phone), a computer with a mobile terminal, etc., and the terminal device may also be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device that exchanges language and/or data with the RAN. The embodiments of the present application are not particularly limited.

Optionally, the network device and the terminal device may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; can also be deployed on the water surface; it may also be deployed on airborne airplanes, balloons and satellite vehicles. The embodiment of the application does not limit the application scenarios of the network device and the terminal device.

Optionally, the network device and the terminal device may communicate via a licensed spectrum (licensed spectrum), may communicate via an unlicensed spectrum (unlicensed spectrum), and may communicate via both the licensed spectrum and the unlicensed spectrum. The network device and the terminal device may communicate with each other through a frequency spectrum of less than 7 gigahertz (GHz), may communicate through a frequency spectrum of more than 7GHz, and may communicate using the frequency spectrum of less than 7GHz and the frequency spectrum of more than 7GHz at the same time. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.

Illustratively, the embodiment of the present application is applied to a communication system 100, as shown in fig. 3. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices 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 Base Station (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 may be 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 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" 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 means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.

Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 3 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 3 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

As shown in fig. 4, an optional processing flow of the cell switching method provided in the embodiment of the present application includes the following steps:

step S201, the terminal device receives first indication information sent by the source network device, where the first indication information is used to indicate that the configuration information of the target cell of the CHO is invalid.

In some embodiments, if the source network device needs to modify the configuration information of the CHO target cell, the source network device sends, to the terminal device, first indication information before sending, to the terminal device, the new configuration information of the target cell, where the first indication information is used to indicate that the configuration information of the CHO target cell is invalid.

In some embodiments, the first indication information is used to indicate an index (index) and/or an identity of the target cell, and configuration information of one target cell corresponding to the index and/or the identity among a plurality of target cells characterizing CHO is invalidated. For example, there are 4 CHO target cells, corresponding to indices 1, 2, 3 and 4, respectively; and when the first indication information indicates index1, the configuration information of the target cell corresponding to the characterization index1 is invalid.

In some embodiments, the first indication information is further used to indicate whether a handover execution condition configuration of the CHO corresponding to the target cell is valid. For example, if the first indication information indicates that the configuration information of the target cell corresponding to the index1 is invalid, the first indication information is further used to indicate whether the handover execution condition configuration of the target cell corresponding to the index1 is valid.

In some embodiments, if the first indication information indicates that the handover execution condition configuration of the CHO corresponding to the target cell is invalid, the terminal device does not execute the handover procedure of the CHO, e.g., the terminal device does not trigger the random access procedure.

In some embodiments, if the first indication information does not indicate whether the handover execution condition configuration of the CHO corresponding to the target cell is valid, the terminal device confirms that the handover execution condition configuration of the CHO is valid. That is, in the case that the first indication information does not indicate whether the handover execution condition configuration of the CHO corresponding to the target cell is valid, the terminal device defaults that the handover execution condition configuration of the CHO corresponding to the target cell is valid.

In some embodiments, if the first indication information indicates that the handover execution condition configuration of the CHO corresponding to the target cell is valid, or the first indication information does not indicate whether the handover execution condition configuration of the CHO corresponding to the target cell is valid, the terminal device may determine whether the terminal device satisfies the handover execution condition of the CHO corresponding to the target cell. And under the condition that the terminal equipment does not meet the switching execution condition of the CHO corresponding to the target cell, the terminal equipment does not execute the switching process of the CHO, for example, the terminal equipment does not trigger the random access process.

In a case that the terminal device meets the handover execution condition of the CHO corresponding to the target cell, the terminal device executes an optional process flow of cell handover with respect to whether the terminal device receives new configuration information of the target cell sent by the source network device, as shown in fig. 5, if the terminal device receives the new configuration information of the target cell sent by the source network device, step S301 is executed; if the terminal device does not receive the new configuration information of the target cell sent by the source network device, step S302 is executed.

Step S301, the terminal device performs cell handover for the target cell based on the new configuration information of the target cell.

In some embodiments, the new configuration information of the target cell is different from the failed configuration information of the target cell, that is, the new configuration information of the target cell is different from the failed configuration information of the target cell. The new configuration information of the target cell is different from the configuration information of the target cell that is failed, and may be different parameter types configured for the target cell or different configuration information for one parameter type.

Step S302, the terminal equipment prohibits the cell switching aiming at the target cell.

In some embodiments, in the case that the terminal device prohibits performing the cell handover with respect to the target cell, the terminal device may further perform step S303 or perform step S304.

Step S303, the terminal device stops determining whether the handover execution condition of the CHO is satisfied, and executes cell handover for the target cell based on the new configuration information of the target cell when receiving the new configuration information of the target cell.

In some embodiments, the terminal device has already determined that the handover execution condition of the CHO of the target cell is satisfied, and the terminal device does not continue to determine whether the handover execution condition of the CHO of the target cell is satisfied; and the terminal equipment executes the cell switching aiming at the target cell based on the new configuration information of the target cell until the terminal equipment receives the new configuration information of the target cell sent by the source network equipment.

Therefore, by keeping the validity of the terminal device for judging the handover execution condition meeting the CHO of the target cell, the terminal device can trigger the cell handover of the target cell at the earliest time when receiving the new configuration information of the target cell sent by the source network device, thereby avoiding the time delay caused by judging whether the handover execution condition meeting the CHO of the target cell again, and improving the efficiency of cell handover.

Step S304, the terminal device continues to determine whether the handover execution condition of the CHO of the target cell is satisfied, and when the handover execution condition of the CHO of the target cell is satisfied and the new configuration information of the target cell is received, the terminal device executes the cell handover for the target cell based on the new configuration information of the target cell.

In some embodiments, in a case where the terminal device has determined that the handover execution condition of the CHO of the target cell is satisfied, but does not receive the new configuration information of the target cell sent by the source network device, the terminal device continues to determine whether the handover execution condition of the CHO of the target cell is satisfied, until the terminal device performs cell handover for the target cell based on the new configuration information of the target cell in a case where the handover execution condition of the CHO of the target cell is satisfied and the new configuration information of the target cell is received.

The terminal device receives new configuration information of the target cell sent by a source network device, and the new configuration information may occur after the terminal device determines that a handover execution condition of CHO of the target cell is satisfied; for example, after the terminal device determines that the handover execution condition of the CHO of the target cell is satisfied, before determining whether the handover execution condition of the CHO of the target cell is satisfied next time, the terminal device receives new configuration information of the target cell sent by the source network device, and then the terminal device may execute cell handover for the target cell based on the new configuration information of the target cell. In this scenario, it may be considered that when the terminal device receives the new configuration information of the target cell sent by the source network device, the cell handover for the target cell may be executed based on the new configuration information of the target cell.

The terminal device receives new configuration information of the target cell sent by a source network device, and the new configuration information may occur before the terminal device judges that a handover execution condition of CHO of the target cell is satisfied; for example, after the terminal device determines that the handover execution condition of the CHO of the target cell is not satisfied, the terminal device receives new configuration information of the target cell, which is sent by the source network device; the terminal device again determines whether the handover execution condition of CHO of the target cell is satisfied. If the terminal device determines that the handover execution condition of the CHO of the target cell is satisfied, the terminal device may execute the cell handover for the target cell based on the new configuration information of the target cell. In this scenario, it may be considered that after the terminal device receives the new configuration information of the target cell sent by the source network device, the cell handover for the target cell may be executed based on the new configuration information of the target cell.

In various optional embodiments of the present application, the first indication information may be carried in an RRC message, the first indication information may also be carried in a Media Access Control Element (MAC CE), and the first indication information may also be carried in a Physical Downlink Control Channel (PDCCH) signaling.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

In this optional embodiment of the present application, in a case that the source network device needs to modify the configuration information of the CHO target cell, the source network device sends, to the terminal device, the first indication information indicating that the configuration information of the CHO target cell is invalid before sending, to the terminal device, the new configuration information of the target cell. Therefore, the problem of cell switching failure caused by the fact that the terminal equipment accesses the target cell by using the configuration information of the invalid CHO target cell before receiving the configuration information of the target cell carrying the modified CHO can be avoided, and the success rate of cell switching of the terminal equipment is improved.

In order to implement the cell switching method, an embodiment of the present application provides a terminal device, where an optional structural diagram of the terminal device 400 is shown in fig. 6, and the method includes:

a receiving unit 401, configured to receive first indication information sent by a source network device, where the first indication information is used to indicate that configuration information of a target cell of a CHO is invalid.

In some embodiments, the first indication information is used to indicate an index and/or an identity of the target cell.

In some embodiments, the first indication information is further used to indicate whether a handover execution condition configuration of the CHO corresponding to the target cell is valid.

In some embodiments, the terminal device 400 further includes: a first processing unit 402, configured to confirm that the handover execution condition configuration of the CHO is valid when the first indication information does not indicate whether the handover execution condition configuration of the CHO corresponding to the target cell is valid.

In some embodiments, the first indication information is carried in at least any one of the following: RRC messages, MAC CE and PDCCH signaling.

In some embodiments, the terminal device 400 further includes:

a second processing unit 403, configured to, if the handover execution condition configuration of the CHO corresponding to the target cell is valid and the handover execution condition of the CHO is satisfied, if the receiving unit receives the new configuration information of the target cell, perform cell handover for the target cell based on the new configuration information of the target cell; and the new configuration information of the target cell is different from the configuration information of the target cell failure.

In some embodiments, the terminal device 400 further includes:

a third processing unit 404, configured to, when the handover execution condition configuration of the CHO corresponding to the target cell is valid and the handover execution condition of the CHO is satisfied, prohibit the cell handover to the target cell from being executed if the receiving unit does not receive the new configuration information of the target cell;

and the new configuration information of the target cell is different from the configuration information of the target cell failure.

In some embodiments, the third processing unit 404 is further configured to stop determining whether the handover execution condition of the CHO is satisfied; and when the receiving unit receives the new configuration information of the target cell, performing cell handover for the target cell based on the new configuration information of the target cell.

In some embodiments, the third processing unit 404 is further configured to continuously determine whether the handover execution condition of the CHO is satisfied; and when the CHO handover execution condition is met and the receiving unit receives the new configuration information of the target cell, executing cell handover aiming at the target cell based on the new configuration information of the target cell.

In order to implement the cell switching method, an embodiment of the present application provides a source network device, and as shown in fig. 7, an optional structural diagram of the source network device 500 includes:

a sending unit 501, configured to send first indication information to the terminal device, where the first indication information is used to indicate that the configuration information of the target cell of the CHO is invalid.

In some embodiments, the sending unit 501 is further configured to send, to the terminal device, new configuration information of the target cell, where the new configuration information of the target cell is different from the configuration information of the target cell that is failed.

The embodiment of the present application further provides a terminal device, which includes a processor and a memory for storing a computer program capable of running on the processor, where the processor is configured to execute the steps of the cell handover method executed by the terminal device when running the computer program.

The embodiment of the present application further provides a source network device, which includes a processor and a memory for storing a computer program capable of running on the processor, where the processor is configured to execute the steps of the cell handover method executed by the source network device when running the computer program.

An embodiment of the present application further provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the cell switching method executed by the terminal equipment.

An embodiment of the present application further provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the cell switching method executed by the source network equipment.

The embodiment of the application also provides a storage medium, which stores an executable program, and the executable program is executed by a processor to realize the cell switching method executed by the terminal equipment.

An embodiment of the present application further provides a storage medium, which stores an executable program, and when the executable program is executed by a processor, the method for cell handover performed by the source network device is implemented.

An embodiment of the present application further provides a computer program product, which includes computer program instructions, where the computer program instructions enable a computer to execute the cell handover method executed by the terminal device.

An embodiment of the present application further provides a computer program product, which includes computer program instructions, where the computer program instructions enable a computer to execute the cell handover method executed by the source network device.

The embodiment of the present application further provides a computer program, where the computer program enables a computer to execute the cell handover method executed by the terminal device.

An embodiment of the present application further provides a computer program, where the computer program enables a computer to execute the cell handover method executed by the source network device.

Fig. 8 is a schematic diagram of a hardware component structure of an electronic device (a terminal device or a source network device) according to an embodiment of the present application, where the electronic device 700 includes: at least one processor 701, a memory 702, and at least one network interface 704. The various components in the electronic device 700 are coupled together by a bus system 705. It is understood that the bus system 705 is used to enable communications among the components. The bus system 705 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various busses are labeled in figure 8 as the bus system 705.

It will be appreciated that the memory 702 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. The non-volatile Memory may be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), magnetic random access Memory (FRAM), Flash Memory (Flash Memory), magnetic surface Memory, optical Disc, or Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 702 described in embodiments herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The memory 702 in the embodiments of the present application is used to store various types of data to support the operation of the electronic device 700. Examples of such data include: any computer program for operating on electronic device 700, such as application 7022. A program for implementing the methods according to embodiments of the present application may be included in application 7022.

The method disclosed in the embodiments of the present application may be applied to the processor 701, or implemented by the processor 701. The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The Processor 701 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor 701 may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application 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 modules may be located in a storage medium located in the memory 702, and the processor 701 may read the information in the memory 702 and perform the steps of the aforementioned methods in conjunction with its hardware.

In an exemplary embodiment, the electronic Device 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), FPGAs, general purpose processors, controllers, MCUs, MPUs, or other electronic components for performing the foregoing methods.

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

Optionally, the storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program enables the computer to execute corresponding processes in the methods executed by the terminal device in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the storage medium may be applied to the source network device in the embodiment of the present application, and the computer program enables a computer to execute corresponding processes in the methods executed by the source network device in the embodiment of the present application, which is not described herein again for brevity.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It should be understood that the terms "system" and "network" are often used interchangeably herein in this application. The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the former and latter related objects are in an "or" relationship.

The above description is only exemplary of the present application and should not be taken as limiting the scope of the present application, as any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

A method of cell handover, the method comprising:

the terminal equipment receives first indication information sent by source network equipment, wherein the first indication information is used for indicating that the configuration information of a target cell of Conditional Handover (CHO) is invalid.
The method of claim 1, wherein the first indication information indicates an index and/or an identity of the target cell.
The method according to claim 1 or 2, wherein the first indication information is further used for indicating whether a handover execution condition configuration of the CHO corresponding to the target cell is valid.
The method according to claim 1 or 2, wherein, in case that the first indication information does not indicate whether the handover execution condition configuration of the CHO corresponding to the target cell is valid or not,

and the terminal equipment confirms that the switching execution condition configuration of the CHO is valid.
The method according to any one of claims 1 to 4, wherein the first indication information is carried in at least any one of the following:

a Radio Resource Control (RRC) message, a media access control (MAC CE) unit and a Physical Downlink Control Channel (PDCCH) signaling.
The method according to any one of claims 1 to 5, wherein, in the case that the handover execution condition configuration of the CHO corresponding to the target cell is valid and the handover execution condition of the CHO is satisfied,

if the terminal equipment receives the new configuration information of the target cell, the terminal equipment executes cell switching aiming at the target cell based on the new configuration information of the target cell;

and the new configuration information of the target cell is different from the configuration information of the target cell failure.
The method according to any one of claims 1 to 5, wherein, in the case that the handover execution condition configuration of the CHO corresponding to the target cell is valid and the handover execution condition of the CHO is satisfied,

if the terminal equipment does not receive the new configuration information of the target cell, the terminal equipment prohibits executing cell switching aiming at the target cell;

and the new configuration information of the target cell is different from the configuration information of the target cell failure.
The method of claim 7, wherein the method further comprises:

the terminal equipment stops judging whether the CHO switching execution condition is met;

and under the condition that the terminal equipment receives the new configuration information of the target cell, the terminal equipment executes cell switching aiming at the target cell based on the new configuration information of the target cell.
The method of claim 7, wherein the method further comprises:

the terminal equipment continuously judges whether the CHO switching execution condition is met;

and under the condition that the CHO handover execution condition is met and the terminal equipment receives the new configuration information of the target cell, the terminal equipment executes the cell handover aiming at the target cell based on the new configuration information of the target cell.
A method of cell handover, the method comprising:

the source network equipment sends first indication information to the terminal equipment, wherein the first indication information is used for indicating that the configuration information of a target cell of Conditional Handover (CHO) is invalid.
The method of claim 10, wherein the first indication information indicates an index and/or an identity of the target cell.
The method according to claim 10 or 11, wherein the first indication information is further used to indicate whether a handover execution condition configuration of the CHO corresponding to the target cell is valid.
The method according to any one of claims 10 to 12, wherein the first indication information is carried in at least any one of the following:

a Radio Resource Control (RRC) message, a media access control (MAC CE) unit and a Physical Downlink Control Channel (PDCCH) signaling.
The method of any of claims 10 to 13, wherein the method further comprises:

and the source network equipment sends the new configuration information of the target cell to the terminal equipment, wherein the new configuration information of the target cell is different from the configuration information of the target cell which is invalid.
A terminal device, the terminal device comprising:

the device comprises a receiving unit configured to receive first indication information sent by a source network device, wherein the first indication information is used for indicating that configuration information of a target cell of Conditional Handover (CHO) is invalid.
The terminal device according to claim 15, wherein the first indication information is used to indicate an index and/or an identity of the target cell.
The terminal device according to claim 15 or 16, wherein the first indication information is further configured to indicate whether a handover execution condition configuration of the CHO corresponding to the target cell is valid.
The terminal device of claim 15 or 16, wherein the terminal device further comprises:

a first processing unit, configured to confirm that the handover execution condition configuration of the CHO is valid when the first indication information does not indicate whether the handover execution condition configuration of the CHO corresponding to the target cell is valid.
The terminal device according to any one of claims 15 to 18, wherein the first indication information is carried in at least any one of the following:

a Radio Resource Control (RRC) message, a media access control (MAC CE) unit and a Physical Downlink Control Channel (PDCCH) signaling.
The terminal device of any of claims 15 to 19, wherein the terminal device further comprises:

a second processing unit, configured to, if the handover execution condition configuration of the CHO corresponding to the target cell is valid and the handover execution condition of the CHO is satisfied, if the receiving unit receives the new configuration information of the target cell, perform cell handover for the target cell based on the new configuration information of the target cell;

and the new configuration information of the target cell is different from the configuration information of the target cell failure.
The terminal device of any of claims 15 to 19, wherein the terminal device further comprises:

a third processing unit, configured to, when the handover execution condition configuration of the CHO corresponding to the target cell is valid and the handover execution condition of the CHO is satisfied, prohibit the cell handover to the target cell from being executed if the receiving unit does not receive the new configuration information of the target cell;

and the new configuration information of the target cell is different from the configuration information of the target cell failure.
The terminal device according to claim 21, wherein the third processing unit is further configured to stop determining whether the handover execution condition of the CHO is satisfied; and when the receiving unit receives the new configuration information of the target cell, performing cell handover for the target cell based on the new configuration information of the target cell.
The terminal device according to claim 21, wherein the third processing unit is further configured to continue to determine whether a handover execution condition of the CHO is satisfied; and when the CHO handover execution condition is met and the receiving unit receives the new configuration information of the target cell, executing cell handover aiming at the target cell based on the new configuration information of the target cell.
A source network device, the source network device comprising:

the terminal equipment comprises a sending unit and a receiving unit, wherein the sending unit is configured to send first indication information to the terminal equipment, and the first indication information is used for indicating that the configuration information of a target cell of Conditional Handover (CHO) is invalid.
The source network device of claim 24, wherein the first indication information indicates an index and/or an identity of the target cell.
The source network device of claim 25, wherein the first indication information is further configured to indicate whether a handover execution condition configuration of the CHO corresponding to the target cell is valid.
The source network device of any of claims 24 to 26, wherein the first indication information is carried in at least any one of:

a Radio Resource Control (RRC) message, a media access control unit (MAC CE) and a Physical Downlink Control Channel (PDCCH) signaling.
The source network device according to any one of claims 24 to 27, wherein the sending unit is further configured to send new configuration information of the target cell to the terminal device, where the new configuration information of the target cell is different from the failed configuration information of the target cell.
A terminal device comprising a processor and a memory for storing a computer program capable of running on the processor, wherein,

the processor is configured to perform the steps of the cell handover method according to any of claims 1 to 9 when running the computer program.
A source network device comprising a processor and a memory for storing a computer program capable of running on the processor, wherein,

the processor is configured to perform the steps of the cell handover method according to any of claims 10 to 14 when running the computer program.
A storage medium storing an executable program which, when executed by a processor, implements the cell handover method of any one of claims 1 to 9.
A storage medium storing an executable program which, when executed by a processor, implements the cell handover method of any one of claims 10 to 14.
A computer program product comprising computer program instructions to cause a computer to perform the cell handover method of any one of claims 1 to 9.
A computer program product comprising computer program instructions to cause a computer to perform the cell handover method of any one of claims 10 to 14.
A computer program for causing a computer to perform a cell handover method according to any one of claims 1 to 9.
A computer program for causing a computer to perform a cell handover method according to any one of claims 10 to 14.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device in which the chip is installed performs the cell handover method according to any one of claims 1 to 9.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device in which the chip is installed performs the cell handover method according to any one of claims 10 to 14.