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WO2024016236A1 - 切换方法、装置、设备及存储介质 - Google Patents

切换方法、装置、设备及存储介质 Download PDF

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Publication number
WO2024016236A1
WO2024016236A1 PCT/CN2022/106879 CN2022106879W WO2024016236A1 WO 2024016236 A1 WO2024016236 A1 WO 2024016236A1 CN 2022106879 W CN2022106879 W CN 2022106879W WO 2024016236 A1 WO2024016236 A1 WO 2024016236A1
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WO
WIPO (PCT)
Prior art keywords
signaling
handover
terminal
network device
cell
Prior art date
Application number
PCT/CN2022/106879
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English (en)
French (fr)
Inventor
罗星熠
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2022/106879 priority Critical patent/WO2024016236A1/zh
Priority to CN202280002568.XA priority patent/CN117751619A/zh
Publication of WO2024016236A1 publication Critical patent/WO2024016236A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • the present application relates to the field of mobile communications, and in particular to a switching method, device, equipment and storage medium.
  • the network equipment covers at least one cell, and the terminal can access the cell when it is within the cell range covered by the network equipment. If the terminal moves to another cell, cell switching is required. Specifically, the terminal measures the cell and reports the obtained cell measurement results to the network device. The network device returns handover signaling to the terminal based on the cell measurement results to instruct the terminal to perform handover.
  • the network equipment since the network equipment only controls the terminal to perform cell switching based on the cell measurement results reported by the terminal, it has limitations.
  • the embodiments of the present application provide a handover method, device, equipment and storage medium, breaking the limitation that network equipment only performs handover based on cell measurement results.
  • the technical solutions are as follows:
  • a switching method is provided, the method is executed by a terminal, and the method includes:
  • Receive handover signaling sent by the first network device The handover signaling is determined by the first network device when it is determined that the beam measurement result satisfies the handover condition.
  • the beam measurement result is determined by the terminal for at least one candidate cell. Measure to determine;
  • a switching method is provided, the method is performed by a network device, and the method includes:
  • the handover signaling is sent to the terminal, the beam measurement result is determined by the terminal's measurement of at least one candidate cell, and the handover signaling instructs the terminal to switch to the target cell indicated by the handover signaling.
  • a switching method is provided, the method is performed by a network device, and the method includes:
  • a switching device includes:
  • a receiving module configured to receive switching signaling sent by the first network device.
  • the switching signaling is determined by the first network device when it is determined that the beam measurement result satisfies the switching condition.
  • the beam measurement result is determined by the terminal. Measure and determine at least one candidate cell;
  • a switching module configured to switch to the target cell indicated by the switching signaling in response to the switching signaling.
  • a switching device includes:
  • a determination module configured to determine handover signaling when it is determined that the beam measurement results meet the handover conditions
  • a sending module configured to send the switching signaling to the terminal, the beam measurement result is determined by the terminal measuring at least one candidate cell, and the switching signaling instructs the terminal to switch to the target indicated by the switching signaling. community.
  • a switching device includes:
  • a confirmation module configured to respond to the terminal's random access mode and confirm that the terminal accesses the target cell of the second network device.
  • a terminal includes: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions. Execute instructions to implement the switching method as described above.
  • a network device includes: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and Executable instructions are executed to implement the switching method as described above.
  • a computer-readable storage medium stores executable program code.
  • the executable program code is loaded and executed by a processor to implement the switching method in the above aspect.
  • a chip is provided.
  • the chip includes programmable logic circuits and/or program instructions. When the chip is run on a terminal or network device, it is used to implement the switching method in the above aspect.
  • a computer program product is provided.
  • the computer program product is executed by a processor of a terminal or network device, it is used to implement the switching method of the above aspect.
  • the solution provided by the embodiment of this application provides a solution for the network device to control the terminal to perform cell switching based on the beam measurement results, ensuring that the network device determines the handover signaling when the beam measurement results satisfy the handover conditions, and the terminal switches according to the Signaling is used for handover, breaking the limitation that network equipment only performs handover based on cell measurement results.
  • the handover signaling sent by the first network device only needs to indicate the target cell, and there is no need to indicate the parameter information of the target cell. Therefore, signaling overhead is saved and the timeliness of handover to the target cell is improved.
  • Figure 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application
  • Figure 2 shows a flow chart of a switching method provided by an exemplary embodiment of the present application
  • Figure 3 shows a flow chart of a candidate cell configuration method provided by an exemplary embodiment of the present application
  • Figure 4 shows a flow chart of a candidate cell measurement method provided by an exemplary embodiment of the present application
  • Figure 5 shows a flow chart of a switching method provided by an exemplary embodiment of the present application
  • Figure 6 shows a flow chart of a switching method provided by an exemplary embodiment of the present application
  • Figure 7 shows a flow chart of a switching method provided by an exemplary embodiment of the present application.
  • Figure 8 shows a flow chart of a switching method provided by an exemplary embodiment of the present application.
  • Figure 9 shows a block diagram of a switching device provided by an exemplary embodiment of the present application.
  • Figure 10 shows a block diagram of another switching device provided by an exemplary embodiment of the present application.
  • Figure 11 shows a block diagram of a switching device provided by an exemplary embodiment of the present application.
  • Figure 12 shows a block diagram of a switching device provided by an exemplary embodiment of the present application.
  • Figure 13 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.
  • first, second, third, etc. may be used in this application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other.
  • first information may also be called second information, and similarly, the second information may also be called first information.
  • word “if” as used herein may be interpreted as "when” or “when” or “in response to determining.”
  • the information including but not limited to user equipment information, user personal information, etc.
  • data including but not limited to data used for analysis, stored data, displayed data, etc.
  • signals involved in this application All are authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.
  • Figure 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application.
  • the communication system may include: a terminal 10 and a network device 20.
  • the number of terminals 10 is usually multiple, and one or more terminals 10 can be distributed in the cell managed by each network device 20 .
  • the terminal 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems with wireless communication functions, as well as various forms of user equipment (User Equipment, UE), mobile stations ( Mobile Station, MS) and so on.
  • UE User Equipment
  • MS Mobile Station
  • the network device 20 is a device deployed in the access network to provide wireless communication functions for the terminal 10 .
  • the above-mentioned devices that provide wireless communication functions for the terminal 10 are collectively referred to as network equipment.
  • a connection can be established between the network device 20 and the terminal 10 through an air interface, so that communication, including signaling and data interaction, can be performed through the connection.
  • the number of network devices 20 may be multiple, and communication between two adjacent network devices 20 may also be carried out in a wired or wireless manner.
  • the terminal 10 can switch between different network devices 20 , that is, establish connections with different network devices 20 .
  • the network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc.
  • the names of devices with network device functions may be different.
  • 5G NR New Radio, New Radio
  • they are called gNodeB or gNB.
  • the name "network device” may change.
  • Figure 2 shows a flow chart of a switching method provided by an exemplary embodiment of the present application.
  • the exemplary method can be applied to the terminal and the first network device as shown in Figure 1.
  • the method includes at least part of the following content :
  • Step 201 The first network device determines handover signaling when it is determined that the beam measurement result satisfies the handover condition.
  • the beam measurement result refers to the result obtained by the terminal performing L1 (layer 1) measurement.
  • the handover condition refers to the judgment condition for the terminal to perform cell handover. If the network device determines that the beam measurement result of the candidate cell satisfies the handover condition, it may instruct the terminal to switch to the candidate cell that satisfies the handover condition.
  • the handover condition refers to that the average or maximum value of the beam measurement results of the candidate cell is greater than the preset threshold. That is to say, when the average value of the beam measurement results of the candidate cell is greater than the preset threshold, Make sure the switching conditions are met. Alternatively, when the maximum value of the beam measurement result of the candidate cell is greater than the preset threshold, it is determined that the handover condition is met.
  • the handover condition refers to that the top N best measurement results in the beam measurement results are the measurement results of the candidate cell, and N is a positive integer. That is to say, the measurement results in the candidate cell are the top N best measurement results. In the case of optimal measurement results, it is determined that the switching conditions are met.
  • the handover condition refers to that the measurement result of the best beam of the candidate cell is greater than the sum of the measurement result of the best beam of the serving cell and the first offset value (offset1), that is, in the candidate cell If the measurement result of the best beam of the cell is greater than the sum of the measurement result of the best beam of the serving cell and the first offset value, it is determined that the handover condition is met.
  • the handover condition refers to that the average value of the beam measurement results of the candidate cell is greater than the sum of the average value of the beam measurement results of the serving cell and the second offset value (offset2), that is, in the candidate cell
  • offset2 the second offset value
  • the first network device determines whether the beam measurement result satisfies the switching condition based on the first network device's own rules. This application does not determine whether the first network device determines whether the beam measurement result satisfies the switching condition. limited.
  • the first network device after determining that the beam measurement result satisfies the switching condition, the first network device also determines whether the current load satisfies the switching condition, and determines the switching signaling if the current load satisfies the switching condition.
  • the beam measurement result includes a measurement result of at least one candidate cell. That is to say, the terminal measures at least one candidate cell, obtains the beam measurement result of at least one candidate cell, and reports the beam measurement result of at least one candidate cell to the network device. After the network device receives the beam measurement result sent by the terminal, it can Handover signaling is determined based on beam measurement results.
  • the candidate cell refers to the cell where the terminal needs to perform beam measurement.
  • at least one candidate cell is configured by a network device.
  • Step 202 The first network device sends handover signaling to the terminal.
  • the beam measurement result is determined by the terminal's measurement of at least one candidate cell.
  • the handover signaling instructs the terminal to switch to the target cell indicated by the handover signaling.
  • the first network device corresponds to the source cell and may also be called a source cell.
  • the first network device will also send response information to the CU (Central Unit).
  • the response information instructs the terminal to perform cell switching and the target cell.
  • the CU receives the response information sent by the first network device, that is, It can determine the terminal's next handover and the target cell to which it will handover.
  • the CU refers to a device that controls the first network device, and the CU can also control the second network device corresponding to the target cell.
  • the CU belongs to a unit in the gNB.
  • the original gNB concept is split into a CU and multiple DUs (Distributed Units).
  • the CU is a central unit and the CU is used to control multiple DUs.
  • the embodiments of the present application are not limited to the above-mentioned splitting form, and may also have different splitting forms.
  • Step 203 The terminal receives the handover signaling sent by the first network device.
  • the handover signaling is determined by the first network device when it is determined that the beam measurement result satisfies the handover condition.
  • the beam measurement result is determined by the terminal measuring at least one candidate cell.
  • the network device when the first network device receives the beam measurement result reported by the terminal, the network device can determine whether the handover condition is met based on the beam measurement result of at least one candidate cell. When it is determined that the beam measurement result satisfies the handover condition. Determine the handover signaling and send the handover signaling to the terminal. After receiving the handover signaling, the terminal can determine that the first network device instructs the terminal to switch to the target cell.
  • Step 204 The terminal responds to the handover signaling and switches to the target cell indicated by the handover signaling.
  • the terminal receives the handover signaling sent by the first network device. Since the handover signaling instructs the terminal to switch to the target cell indicated by the handover signaling, the terminal responds to the handover signaling and switches to the handover signaling. The target cell indicated by the signaling.
  • the steps performed by the terminal in the embodiment of the present application can separately form a new embodiment, and the steps performed by the network device can also separately form a new embodiment, which are not limited by the embodiment of the present application.
  • the solution provided by the embodiment of this application provides a solution for the network device to control the terminal to perform cell switching based on the beam measurement results, ensuring that the network device determines the handover signaling when the beam measurement results satisfy the handover conditions, and the terminal switches according to the Signaling is used for handover, breaking the limitation that network equipment only performs handover based on cell measurement results.
  • the handover signaling sent by the first network device only needs to indicate the target cell, and there is no need to indicate the parameter information of the target cell. Therefore, signaling overhead is saved and the timeliness of handover to the target cell is improved.
  • Figure 2 The embodiment in Figure 2 is explained by taking the network device to determine and instruct the terminal to perform handover as an example. The following describes how the network device configures at least one candidate cell for the terminal.
  • Figure 3 shows a flow chart of a candidate cell configuration method provided by an exemplary embodiment of the present application. The exemplary method can be applied to the terminal and network equipment shown in Figure 1. The method includes at least part of the following content :
  • Step 301 The first network device sends configuration signaling to the terminal, where the configuration signaling is used to configure at least one candidate cell for the terminal.
  • the first network device may determine at least one candidate cell, and then send configuration signaling to the terminal to configure the terminal with at least one candidate cell determined by the first network device.
  • the first network device determines at least one candidate cell according to the cell measurement result, and the cell measurement result and the beam measurement result are measurement results of different layers.
  • the cell measurement result refers to the result obtained by the terminal performing L3 (layer 3) measurement.
  • the first network device can learn the cell measurement results of at least one neighboring cell, the first network device can determine at least one candidate cell based on the cell measurement results of the neighboring cells, and then the first network device sends the configuration information to the terminal. Let, configure at least one determined candidate cell for the terminal.
  • Step 302 The terminal receives the configuration signaling sent by the first network device.
  • the terminal after receiving the configuration signaling sent by the first network device, the terminal can determine at least one candidate cell configured by the first network device for the terminal, and the terminal can perform beam measurement on the at least one candidate cell. Obtain the beam measurement result of at least one candidate cell.
  • the configuration signaling includes at least one of the following:
  • TCI Transmission Configuration Indicator, transmission indication configuration
  • the TCI status is used for beam indication.
  • the TCI status of a candidate cell actually refers to the beam of the candidate cell.
  • random access means that the terminal can access the target cell through random access.
  • the resources used for random access refer to the resources used to transmit information during the random access process.
  • the access confirmation information is used to indicate that the terminal has accessed the target cell.
  • the configuration signaling is RRC (Radio Resource Control, Radio Resource Control layer) signaling, or the configuration signaling can also be other types of signaling, which is not limited in the embodiments of this application.
  • RRC Radio Resource Control, Radio Resource Control layer
  • the resources used to send access confirmation information to the target cell are PUSCH (Physical Uplink Shared Channel, physical layer uplink shared channel) resources.
  • PUSCH Physical Uplink Shared Channel, physical layer uplink shared channel
  • the terminal sends a MAC CE (Media Access Control Element) to the target cell through PUSCH resources to indicate successful access to the target cell.
  • MAC CE Media Access Control Element
  • the resources used to send access confirmation information to the target cell are SR resources.
  • the terminal sends an SR (Scheduling Request, scheduling request) to the target cell through SR resources to indicate successful access to the target cell.
  • SR Service Request, scheduling request
  • the network device configures at least one candidate cell for the terminal, so that the terminal performs beam measurement on the at least one candidate cell to obtain the beam measurement result, and then the network device determines the handover signaling based on the beam measurement result, so as to Instructing the terminal to perform handover breaks the limitation that network equipment only performs handover based on cell measurement results.
  • the first network device configures the parameter information of the candidate cell for the terminal through configuration signaling in advance. Therefore, the handover signaling sent by the first network device can directly indicate the target cell, and there is no need to indicate the parameter information of the target cell. , thus saving signaling overhead and improving the timeliness of handover to the target cell.
  • FIG. 2 The embodiment in Figure 2 is used as an example to illustrate the network device determining handover signaling based on beam measurement results.
  • the following describes how the terminal reports the beam measurement result of at least one candidate cell.
  • Figure 4 shows a flow chart of a candidate cell measurement method provided by an exemplary embodiment of the present application.
  • the exemplary method can be applied to the terminal and network equipment shown in Figure 1.
  • the method includes at least part of the following content :
  • Step 401 The terminal performs beam measurement on at least one candidate cell and obtains a beam measurement result of at least one candidate cell.
  • the terminal can perform beam measurement on the at least one candidate cell to obtain the beam measurement result of the at least one candidate cell.
  • the beam measurement result is a measurement result based on L1, so the terminal performs L1 beam measurement on at least one candidate cell to obtain the beam measurement result.
  • Step 402 The terminal reports at least one beam measurement result.
  • the terminal measures at least one candidate cell to obtain the beam measurement result of each candidate cell, and then the terminal can report the obtained at least one beam measurement result.
  • the terminal sends the beam measurement result of at least one candidate cell to the network device.
  • the terminal selects the beam measurement results of some candidate cells from the beam measurement results of at least one candidate cell, and sends the selected beam measurement results of the partial candidate cells to the network device.
  • Step 403 The first network device receives at least one beam measurement result sent by the terminal.
  • the beam measurement result is obtained by the terminal performing beam measurement on at least one candidate cell.
  • the first network device can receive the at least one beam measurement result reported by the terminal, and can then perform subsequent steps of determining handover signaling.
  • the embodiment of the present application takes the execution of steps 401-403 once as an example for description.
  • the above steps 401-403 can be executed multiple times, that is to say, the terminal can report the beam measurement results multiple times, and the first network device can also receive the beam measurement results multiple times, and then execute step 201 multiple times. , to dynamically instruct the terminal to perform cell switching.
  • the terminal performs beam measurement every preset time period, and then reports the beam measurement result.
  • the first network device also receives the beam measurement result every preset time period, and then determines whether or not based on the received beam measurement result.
  • Sending handover signaling means dynamic handover is achieved.
  • the preset time period may be set by a network device, or agreed upon by a communication protocol, or set in other ways, which are not limited by the embodiments of this application.
  • the terminal performs beam measurement on at least one candidate cell and then reports the obtained beam measurement result, so that the first network device determines handover signaling based on the received beam measurement result to instruct the terminal to perform handover. , breaking the limitation of network equipment switching based only on cell measurement results. Moreover, in the embodiment of the present application, the handover signaling sent by the first network device only needs to indicate the target cell, and there is no need to indicate the parameter information of the target cell. Therefore, signaling overhead is saved and the timeliness of handover to the target cell is improved.
  • FIG. 2 illustrates an example in which the first network device sends handover signaling to instruct the terminal to perform handover.
  • the following describes the handover signaling sent by the first network device.
  • the switching signaling is MAC CE, or the switching signaling is DCI (Downlink Control Information).
  • the handover signaling sent by the first network device to the terminal may be a MAC CE, and the terminal can perform handover after receiving the MAC CE.
  • the switching signaling sent by the first network device to the terminal may be DCI, and the terminal can perform switching after receiving the DCI.
  • the handover signaling uses different ways to indicate the TCI status to indicate the target cell.
  • the handover signaling is MAC CE
  • the MAC CE is used to activate the TCI state of a cell.
  • the first network device sends MAC CE to the terminal, and the MAC CE is used to indicate the TCI status of a cell, and defaults to the cell corresponding to the TCI status. for the target community.
  • the DCI when the handover signaling is DCI, the DCI is used to indicate the TCI status corresponding to one of the activated cells.
  • the handover signaling determined by the first network device is DCI
  • the first network device has activated the TCI states corresponding to multiple cells for the terminal, and the DCI sent is used to indicate the activated multiple cells.
  • the TCI status corresponding to one cell among the cells further indicates that the cell corresponding to the TCI status is the target cell.
  • the TCI states corresponding to multiple activated cells are activated by MAC CE. That is to say, the first network device needs to first send a MAC CE to the terminal, activate the TCI status of multiple cells through the MAC CE, and then use DCI to indicate the TCI status of one of the activated cells.
  • the first network device and the second network device are managed by different DUs, then the first network device can directly send the TCI status indicated by the above handover signaling to perform cell switching.
  • the first network device and the second network device are also applied to intra-DU, that is, the cells corresponding to the first network device and the second network device are both managed by the same DU. In this case, the first network device and the second network device not only need to consider the TCI status indicated by the handover signaling, but also need to consider the type indicator.
  • the handover signaling further includes a type indicator, and the type indicator is used to indicate whether to perform cell handover.
  • the type indicator corresponding to each TCI state is also indicated, so as to indicate one of the multiple cells through DCI.
  • whether to switch to the target cell is determined based on the target cell corresponding to the TCI state and the type indicator.
  • the type indicator includes 1 bit.
  • the terminal determines not to switch to the target cell based on the target cell corresponding to the TCI status and the type indicator.
  • the type indicator is 1, the terminal determines to switch to the target cell according to the target cell corresponding to the TCI state and the type indicator.
  • the embodiment of the present application takes the example of indicating the target cell by indicating the TCI status as an example.
  • the handover signaling further includes a handover indication field, and the handover indication field indicates the target cell.
  • the first network device directly sets a handover indication field in the handover signaling, and directly indicates the target cell through the handover indication field.
  • the handover indication field is used to indicate the identity of the target cell.
  • the identifier of the target cell is the ID of the target cell.
  • the handover indication field includes a preset number of bits, and the preset number of bits have different values, indicating different target cells.
  • the preset number is set by the network device, or agreed by the communication protocol, or set in other ways, and is not limited by the embodiments of this application.
  • the preset number is 2, 3, 4 or other values.
  • the first network device indicates four different target cells through a 2-bit handover indication field. If the handover indication field is 00, it indicates target cell 1, or if the handover indication field is 01, it indicates target cell 2, or if the handover indication field is 10, it indicates target cell 3, or if the handover indication field is 10, it indicates target cell 3. If the handover indication field is 11, it indicates target cell 4.
  • the first network device can use multiple forms of handover signaling to instruct the terminal to switch to the target cell, which expands the way the first network device sends handover signaling and improves the diversity of handover signaling. sex.
  • FIG. 2 The embodiment shown in FIG. 2 is an example in which the terminal can switch to a cell indicated by handover signaling.
  • the method used by the terminal to switch to the target cell will be described below.
  • the terminal responds to the handover signaling and accesses the target cell indicated by the handover signaling through random access.
  • the random access method refers to that the terminal sends a random access preamble to the second network device corresponding to the target cell, the second network device receives the random access preamble, and sends a random access response in response to the random access preamble. , the terminal sends an RRC connection request after receiving the random access response, and the second network device completes the access after receiving the RRC connection request.
  • the embodiment of the present application receives the handover signaling, and in response to the handover signaling, can switch to the target cell through the above random access method.
  • resources used for random access are configured by configuration signaling.
  • configuration signaling refer to the resources used for random access included in the configuration signaling in the above embodiment.
  • the second network device will respond to the random access mode of the terminal and determine the target cell in which the terminal receives the second network device.
  • the terminal after the terminal receives the handover signaling, it can switch to the target cell through random access signaling in response to the handover signaling, breaking the limitation of network equipment switching only based on cell measurement results. .
  • the handover signaling sent by the first network device only needs to indicate the target cell, and there is no need to indicate the parameter information of the target cell. Therefore, signaling overhead is saved and the timeliness of handover to the target cell is improved.
  • the above embodiment takes the terminal switching to the target cell through random access as an example for explanation.
  • the terminal can directly switch to the target cell.
  • access confirmation information is sent to the second network device corresponding to the target cell based on the configured resources, and the handover signaling indicates the target cell.
  • the TA is used to indicate the timing advance of the terminal, that is, the terminal can complete uplink synchronization according to the TA. Therefore, the terminal can respond to the received handover signaling and send a message to the second terminal corresponding to the target cell based on the configured resources.
  • the network device sends access confirmation information, and uses the access confirmation information to inform the second network device that the terminal accesses the target cell, and then communicates through the target cell.
  • the second network device receives the access confirmation information sent by the terminal and determines the target cell where the terminal receives the second network device.
  • the terminal after the terminal receives the handover signaling, if it has obtained the TA, it will send access confirmation information in response to the handover signaling, and then switch to the target cell, breaking the problem that the network equipment only relies on the cell measurement results. Limitations of making a switch.
  • the handover signaling sent by the first network device only needs to indicate the target cell, and there is no need to indicate the parameter information of the target cell. Therefore, signaling overhead is saved and the timeliness of handover to the target cell is improved.
  • Step 501 The terminal performs beam measurement on at least one candidate cell and sends the obtained beam measurement result to the source cell.
  • Step 502 The source cell determines handover signaling if it determines that handover conditions are met based on the beam measurement results.
  • Step 503 The source cell sends response information to the gNB-CU.
  • the response information instructs the terminal to perform cell switching and the target cell.
  • the CU After receiving the response information sent by the first network device, the CU can determine the next step for the terminal to switch and the target cell to which it will switch.
  • Step 504 gNB-CU returns confirmation information to the source cell according to the response information.
  • Step 505 The source cell sends handover signaling to the terminal.
  • Step 506 The terminal switches to the target cell through random access or access confirmation information.
  • the steps performed by the terminal in the embodiment of the present application can separately form a new embodiment, and the steps performed by the network device can also separately form a new embodiment, which are not limited by the embodiment of the present application.
  • Figure 6 shows a flow chart of a switching method provided by an exemplary embodiment of the present application.
  • the exemplary method can be applied to the terminal shown in Figure 1.
  • the method includes at least part of the following content:
  • Step 601 The terminal receives the handover signaling sent by the first network device.
  • the handover signaling is determined by the first network device when it is determined that the beam measurement result meets the handover condition.
  • the beam measurement result is determined by the terminal measuring at least one candidate cell.
  • the beam measurement result refers to the result obtained by the terminal performing L1 (layer 1) measurement.
  • the handover condition refers to the judgment condition for the terminal to perform cell handover. If the network device determines that the beam measurement result of the candidate cell satisfies the handover condition, it may instruct the terminal to switch to the candidate cell that satisfies the handover condition.
  • the handover condition refers to that the average or maximum value of the beam measurement results of the candidate cell is greater than the preset threshold. That is to say, when the average value of the beam measurement results of the candidate cell is greater than the preset threshold, Make sure the switching conditions are met. Alternatively, when the maximum value of the beam measurement result of the candidate cell is greater than the preset threshold, it is determined that the handover condition is met.
  • the handover condition refers to that the top N best measurement results in the beam measurement results are the measurement results of the candidate cell, and N is a positive integer. That is to say, the measurement results in the candidate cell are the top N best measurement results. In the case of optimal measurement results, it is determined that the switching conditions are met.
  • the handover condition refers to that the measurement result of the best beam of the candidate cell is greater than the sum of the measurement result of the best beam of the serving cell and the first offset value (offset1), that is, in the candidate cell If the measurement result of the best beam of the cell is greater than the sum of the measurement result of the best beam of the serving cell and the first offset value, it is determined that the handover condition is met.
  • the handover condition refers to that the average value of the beam measurement results of the candidate cell is greater than the sum of the average value of the beam measurement results of the serving cell and the second offset value (offset2), that is, in the candidate cell
  • offset2 the second offset value
  • the first network device determines whether the beam measurement result satisfies the switching condition based on the first network device's own rules. This application does not determine whether the first network device determines whether the beam measurement result satisfies the switching condition. limited.
  • the first network device after determining that the beam measurement result satisfies the switching condition, the first network device also determines whether the current load satisfies the switching condition, and determines the switching signaling if the current load satisfies the switching condition.
  • the network device when the first network device receives the beam measurement result reported by the terminal, the network device can determine whether the handover condition is met based on the beam measurement result of at least one candidate cell. When it is determined that the beam measurement result satisfies the handover condition. Determine the handover signaling and send the handover signaling to the terminal. After receiving the handover signaling, the terminal can determine that the first network device instructs the terminal to switch to the target cell.
  • Step 602 In response to the handover signaling, the terminal switches to the target cell indicated by the handover signaling.
  • the terminal receives the handover signaling sent by the first network device. Since the handover signaling instructs the terminal to switch to the target cell indicated by the handover signaling, the terminal responds to the handover signaling and switches to the handover signaling. The target cell indicated by the signaling.
  • the solution provided by the embodiment of this application provides a solution for the network device to control the terminal to perform cell switching based on the beam measurement results, ensuring that the network device determines the handover signaling when the beam measurement results satisfy the handover conditions, and the terminal switches according to the Signaling is used for handover, breaking the limitation that network equipment only performs handover based on cell measurement results.
  • the handover signaling sent by the first network device only needs to indicate the target cell, and there is no need to indicate the parameter information of the target cell. Therefore, signaling overhead is saved and the timeliness of handover to the target cell is improved.
  • the terminal receives configuration signaling sent by the first network device.
  • the terminal after receiving the configuration signaling sent by the first network device, the terminal can determine at least one candidate cell configured by the first network device for the terminal, and the terminal can perform beam measurement on the at least one candidate cell. Obtain the beam measurement result of at least one candidate cell.
  • the configuration signaling includes at least one of the following:
  • the TCI status is used for beam indication.
  • the TCI status of a candidate cell actually refers to the beam of the candidate cell.
  • random access means that the terminal can access the target cell through random access.
  • the resources used for random access refer to the resources used to transmit information during the random access process.
  • the access confirmation information is used to indicate that the terminal has accessed the target cell.
  • the configuration signaling is RRC signaling, or the configuration signaling can also be other types of signaling, which is not limited in the embodiments of this application.
  • the resources used to send access confirmation information to the target cell are PUSCH resources.
  • the terminal sends MAC CE to the target cell through PUSCH resources to indicate successful access to the target cell.
  • the resources used to send access confirmation information to the target cell are SR resources.
  • the terminal sends an SR to the target cell through SR resources to indicate successful access to the target cell.
  • the terminal performs beam measurement on at least one candidate cell and obtains a beam measurement result of at least one candidate cell.
  • the terminal reports at least one beam measurement result.
  • the terminal can perform beam measurement on the at least one candidate cell to obtain the beam measurement result of the at least one candidate cell.
  • the beam measurement result is a measurement result based on L1, so the terminal performs L1 beam measurement on at least one candidate cell to obtain the beam measurement result.
  • the terminal measures at least one candidate cell to obtain the beam measurement result of each candidate cell, and then the terminal can report the obtained at least one beam measurement result.
  • the terminal sends the beam measurement result of at least one candidate cell to the network device.
  • the terminal selects the beam measurement results of some candidate cells from the beam measurement results of at least one candidate cell, and sends the selected beam measurement results of the partial candidate cells to the network device.
  • the terminal performs beam measurement every preset time period, and then reports the beam measurement result.
  • the first network device also receives the beam measurement result every preset time period, and then determines whether or not based on the received beam measurement result.
  • Sending handover signaling means dynamic handover is achieved.
  • the preset time period may be set by a network device, or agreed upon by a communication protocol, or set in other ways, which are not limited by the embodiments of this application.
  • the switching signaling is MAC CE, or the switching signaling is DCI.
  • the handover signaling sent by the first network device to the terminal may be a MAC CE, and the terminal can perform handover after receiving the MAC CE.
  • the switching signaling sent by the first network device to the terminal may be DCI, and the terminal can perform switching after receiving the DCI.
  • the handover signaling uses different ways to indicate the TCI status to indicate the target cell.
  • the handover signaling is MAC CE
  • the MAC CE is used to activate the TCI state of a cell.
  • the first network device sends MAC CE to the terminal, and the MAC CE is used to indicate the TCI status of a cell, and defaults to the cell corresponding to the TCI status. for the target community.
  • the DCI when the handover signaling is DCI, the DCI is used to indicate the TCI status corresponding to one of the activated cells.
  • the handover signaling determined by the first network device is DCI
  • the first network device has activated the TCI states corresponding to multiple cells for the terminal, and the DCI sent is used to indicate the activated multiple cells.
  • the TCI status corresponding to one cell among the cells further indicates that the cell corresponding to the TCI status is the target cell.
  • the TCI states corresponding to multiple activated cells are activated by MAC CE. That is to say, the first network device needs to first send a MAC CE to the terminal, activate the TCI status of multiple cells through the MAC CE, and then use DCI to indicate the TCI status of one of the activated cells.
  • the first network device and the second network device are managed by different DUs, then the first network device can directly send the TCI status indicated by the above handover signaling to perform cell switching.
  • the first network device and the second network device are also applied to intra-DU, that is, the cells corresponding to the first network device and the second network device are both managed by the same DU. In this case, the first network device and the second network device not only need to consider the TCI status indicated by the handover signaling, but also need to consider the type indicator.
  • the handover signaling further includes a type indicator, and the type indicator is used to indicate whether to perform cell handover.
  • the handover signaling also includes a type indicator. This type indicator is used to indicate whether to perform cell handover.
  • the type indicator corresponding to each TCI state is also indicated, so as to indicate one of the multiple cells through DCI.
  • whether to switch to the target cell is determined based on the target cell corresponding to the TCI state and the type indicator.
  • the type indicator includes 1 bit.
  • the terminal determines not to switch to the target cell based on the target cell corresponding to the TCI status and the type indicator.
  • the type indicator is 1, the terminal determines to switch to the target cell according to the target cell corresponding to the TCI state and the type indicator.
  • the embodiment of the present application takes the example of indicating the target cell by indicating the TCI status as an example.
  • the handover signaling further includes a handover indication field, and the handover indication field indicates the target cell.
  • the first network device directly sets a handover indication field in the handover signaling, and directly indicates the target cell through the handover indication field.
  • the handover indication field is used to indicate the identity of the target cell.
  • the identifier of the target cell is the ID of the target cell.
  • the handover indication field includes a preset number of bits, and the preset number of bits have different values, indicating different target cells.
  • the preset number is set by the network device, or agreed by the communication protocol, or set in other ways, and is not limited by the embodiments of this application.
  • the preset number is 2, 3, 4 or other values.
  • the first network device indicates four different target cells through a 2-bit handover indication field. If the handover indication field is 00, it indicates target cell 1, or if the handover indication field is 01, it indicates target cell 2, or if the handover indication field is 10, it indicates target cell 3, or if the handover indication field is 10, it indicates target cell 3. If the handover indication field is 11, it indicates target cell 4.
  • the terminal responds to the handover signaling and accesses the target cell indicated by the handover signaling through random access.
  • the random access method refers to that the terminal sends a random access preamble to the second network device corresponding to the target cell, the second network device receives the random access preamble, and sends a random access response in response to the random access preamble. , the terminal sends an RRC connection request after receiving the random access response, and the second network device completes the access after receiving the RRC connection request.
  • the embodiment of the present application receives the handover signaling, and in response to the handover signaling, can switch to the target cell through the above random access method.
  • resources used for random access are configured by configuration signaling.
  • configuration signaling refer to the resources used for random access included in the configuration signaling in the above embodiment.
  • the terminal after the terminal receives the handover signaling, it can switch to the target cell through random access signaling in response to the handover signaling, breaking the limitation of network equipment switching only based on cell measurement results. .
  • the handover signaling sent by the first network device only needs to indicate the target cell, and there is no need to indicate the parameter information of the target cell. Therefore, signaling overhead is saved and the timeliness of handover to the target cell is improved.
  • the above embodiment takes the terminal switching to the target cell through random access as an example for explanation.
  • the terminal can directly switch to the target cell.
  • access confirmation information is sent to the second network device corresponding to the target cell based on the configured resources, and the handover signaling indicates the target cell.
  • the TA is used to indicate the timing advance of the terminal, that is, the terminal can complete uplink synchronization according to the TA. Therefore, the terminal responds to the received handover signaling and sends a message to the second network corresponding to the target cell based on the configured resources.
  • the device sends access confirmation information, and uses the access confirmation information to inform the second network device that the terminal can access the target cell, and then communicates through the target cell.
  • the terminal after the terminal receives the handover signaling, if it obtains the TA, it will send access confirmation information in response to the handover signaling, and then switch to the target cell, breaking the problem that the network equipment only relies on the cell measurement results. Limitations of making a switch.
  • the handover signaling sent by the first network device only needs to indicate the target cell, and there is no need to indicate the parameter information of the target cell. Therefore, signaling overhead is saved and the timeliness of handover to the target cell is improved.
  • Figure 7 shows a flow chart of a switching method provided by an exemplary embodiment of the present application, which can be applied to the first network device as shown in Figure 1.
  • the method includes at least part of the following content:
  • Step 701 The first network device determines handover signaling when it is determined that the beam measurement result satisfies the handover condition.
  • the beam measurement result refers to the result obtained by the terminal performing L1 (layer 1) measurement.
  • the handover condition refers to the judgment condition for the terminal to perform cell handover. If the network device determines that the beam measurement result of the candidate cell satisfies the handover condition, it may instruct the terminal to switch to the candidate cell that satisfies the handover condition.
  • the handover condition refers to that the average or maximum value of the beam measurement results of the candidate cell is greater than the preset threshold. That is to say, when the average value of the beam measurement results of the candidate cell is greater than the preset threshold, Make sure the switching conditions are met. Alternatively, when the maximum value of the beam measurement result of the candidate cell is greater than the preset threshold, it is determined that the handover condition is met.
  • the handover condition refers to that the top N best measurement results in the beam measurement results are the measurement results of the candidate cell, and N is a positive integer. That is to say, the measurement results in the candidate cell are the top N best measurement results. In the case of optimal measurement results, it is determined that the switching conditions are met.
  • the handover condition refers to that the measurement result of the best beam of the candidate cell is greater than the sum of the measurement result of the best beam of the serving cell and the first offset value (offset1), that is, in the candidate cell If the measurement result of the best beam of the cell is greater than the sum of the measurement result of the best beam of the serving cell and the first offset value, it is determined that the handover condition is met.
  • the handover condition refers to that the average value of the beam measurement results of the candidate cell is greater than the sum of the average value of the beam measurement results of the serving cell and the second offset value (offset2), that is, in the candidate cell
  • offset2 the second offset value
  • the first network device determines whether the beam measurement result satisfies the switching condition based on the first network device's own rules. This application does not determine whether the first network device determines whether the beam measurement result satisfies the switching condition. limited.
  • the first network device after determining that the beam measurement result satisfies the switching condition, the first network device also determines whether the current load satisfies the switching condition, and determines the switching signaling if the current load satisfies the switching condition.
  • the beam measurement result includes a measurement result of at least one candidate cell. That is to say, the terminal measures at least one candidate cell, obtains the beam measurement result of at least one candidate cell, and reports the beam measurement result of at least one candidate cell to the network device. After the network device receives the beam measurement result sent by the terminal, it can Handover signaling is determined based on beam measurement results.
  • the candidate cell refers to the cell where the terminal needs to perform beam measurement.
  • at least one candidate cell is configured by a network device.
  • Step 702 The first network device sends handover signaling to the terminal.
  • the beam measurement result is determined by the terminal measuring at least one candidate cell.
  • the handover signaling instructs the terminal to switch to the target cell indicated by the handover signaling.
  • the first network device corresponds to the source cell and may also be called a source cell.
  • the first network device will also send response information to the CU.
  • the response information instructs the terminal to perform cell switching and the target cell.
  • the CU After the CU receives the response information sent by the first network device, it can determine the next step of the terminal. Handover and the target cell to which the handover is made.
  • the CU refers to a device that controls the first network device, and the CU can also control the second network device corresponding to the target cell.
  • the network device when the first network device receives the beam measurement result reported by the terminal, the network device can determine whether the handover condition is met based on the beam measurement result of at least one candidate cell. When it is determined that the beam measurement result satisfies the handover condition. Determine the handover signaling and send the handover signaling to the terminal. After receiving the handover signaling, the terminal can determine that the first network device instructs the terminal to switch to the target cell.
  • the solution provided by the embodiment of this application provides a solution for the network device to control the terminal to perform cell switching based on the beam measurement results, ensuring that the network device determines the handover signaling when the beam measurement results satisfy the handover conditions, and the terminal switches according to the Signaling is used for handover, breaking the limitation that network equipment only performs handover based on cell measurement results.
  • the handover signaling sent by the first network device only needs to indicate the target cell, and there is no need to indicate the parameter information of the target cell. Therefore, signaling overhead is saved and the timeliness of handover to the target cell is improved.
  • the first network device sends configuration signaling to the terminal, where the configuration signaling is used to configure at least one candidate cell for the terminal.
  • the first network device may determine at least one candidate cell, and then send configuration signaling to the terminal to configure the terminal with at least one candidate cell determined by the first network device.
  • the first network device determines at least one candidate cell according to the cell measurement result, and the cell measurement result and the beam measurement result are measurement results of different layers.
  • the cell measurement result refers to the result obtained by the terminal performing L3 (layer 3) measurement.
  • the first network device can learn the cell measurement results of at least one neighboring cell, the first network device can determine at least one candidate cell based on the cell measurement results of the neighboring cells, and then the first network device sends the configuration information to the terminal. Let, configure at least one determined candidate cell for the terminal.
  • the configuration signaling includes at least one of the following:
  • the TCI status is used for beam indication.
  • the TCI status of a candidate cell actually refers to the beam of the candidate cell.
  • random access means that the terminal can access the target cell through random access.
  • the resources used for random access refer to the resources used to transmit information during the random access process.
  • the access confirmation information is used to indicate that the terminal has accessed the target cell.
  • the configuration signaling is RRC signaling, or the configuration signaling can also be other types of signaling, which is not limited in the embodiments of this application.
  • the resources used to send access confirmation information to the target cell are PUSCH resources.
  • the terminal sends MAC CE to the target cell through PUSCH resources to indicate successful access to the target cell.
  • the resources used to send access confirmation information to the target cell are SR resources.
  • the terminal sends an SR to the target cell through SR resources to indicate successful access to the target cell.
  • the first network device receives at least one beam measurement result sent by the terminal, and the beam measurement result is obtained by the terminal performing beam measurement on at least one candidate cell.
  • the first network device can receive the at least one beam measurement result reported by the terminal, and can then perform subsequent steps of determining handover signaling.
  • the terminal can report the beam measurement results multiple times, and the first network device can also receive the beam measurement results multiple times, and then perform step 201 multiple times to dynamically instruct the terminal to perform cell switching.
  • the terminal performs beam measurement every preset time period, and then reports the beam measurement result.
  • the first network device also receives the beam measurement result every preset time period, and then determines whether or not based on the received beam measurement result.
  • Sending handover signaling means dynamic handover is achieved.
  • the preset time period may be set by a network device, or agreed upon by a communication protocol, or set in other ways, which are not limited by the embodiments of this application.
  • the switching signaling is MAC CE, or the switching signaling is DCI.
  • the handover signaling sent by the first network device to the terminal may be a MAC CE, and the terminal can perform handover after receiving the MAC CE.
  • the switching signaling sent by the first network device to the terminal may be DCI, and the terminal can perform switching after receiving the DCI.
  • the handover signaling uses different ways to indicate the TCI status to indicate the target cell.
  • the handover signaling is MAC CE
  • the MAC CE is used to activate the TCI state of a cell.
  • the first network device sends MAC CE to the terminal, and the MAC CE is used to indicate the TCI status of a cell, and defaults to the cell corresponding to the TCI status. for the target community.
  • the DCI when the handover signaling is DCI, the DCI is used to indicate the TCI status corresponding to one of the activated cells.
  • the first network device has activated TCI states corresponding to multiple cells for the terminal, and the DCI sent is used to indicate the activated multiple cells.
  • the TCI status corresponding to one cell among the cells further indicates that the cell corresponding to the TCI status is the target cell.
  • the TCI states corresponding to multiple activated cells are activated by MAC CE. That is to say, the first network device needs to first send a MAC CE to the terminal, activate the TCI status of multiple cells through the MAC CE, and then use DCI to indicate the TCI status of one of the activated cells.
  • the first network device and the second network device are managed by different DUs, then the first network device can directly send the TCI status indicated by the above handover signaling to perform cell switching.
  • the first network device and the second network device are also applied to intra-DU, that is, the cells corresponding to the first network device and the second network device are both managed by the same DU. In this case, the first network device and the second network device not only need to consider the TCI status indicated by the handover signaling, but also need to consider the type indicator.
  • the handover signaling further includes a type indicator, which is used to indicate whether to perform cell handover.
  • the type indicator corresponding to the switching type of each TCI state is also indicated, so that multiple TCI states can be indicated through DCI.
  • the type indicator includes 1 bit.
  • the terminal determines not to switch to the target cell based on the target cell corresponding to the TCI status and the type indicator.
  • the type indicator is 1, the terminal determines to switch to the target cell according to the target cell corresponding to the TCI state and the type indicator.
  • the embodiment of the present application takes the example of indicating the target cell by indicating the TCI status as an example.
  • the handover signaling further includes a handover indication field, and the handover indication field indicates the target cell.
  • the first network device directly sets a handover indication field in the handover signaling, and directly indicates the target cell through the handover indication field.
  • the handover indication field is used to indicate the identity of the target cell.
  • the identifier of the target cell is the ID of the target cell.
  • the handover indication field includes a preset number of bits, and the preset number of bits have different values, indicating different target cells.
  • the preset number is set by the network device, or agreed by the communication protocol, or set in other ways, and is not limited by the embodiments of this application.
  • the preset number is 2, 3, 4 or other values.
  • the first network device indicates four different target cells through a 2-bit handover indication field. If the handover indication field is 00, it indicates target cell 1, or if the handover indication field is 01, it indicates target cell 2, or if the handover indication field is 10, it indicates target cell 3, or if the handover indication field is 10, it indicates target cell 3. If the handover indication field is 11, it indicates target cell 4.
  • the first network device can use multiple forms of handover signaling to instruct the terminal to switch to the target cell, which expands the way the first network device sends handover signaling and improves the diversity of handover signaling. sex.
  • Figure 8 shows a flow chart of a switching method provided by an exemplary embodiment of the present application, which can be applied to the second network device as shown in Figure 1.
  • the method includes at least part of the following content:
  • Step 801 The second network device responds to the terminal's random access mode and confirms that the terminal accesses the target cell of the second network device.
  • the terminal will access the target cell of the second network device based on the random access method. After determining that the terminal accesses through the random access method, the second network device can confirm that the terminal accesses the second network device. The target cell of the network device.
  • the embodiment of the present application is explained by taking the second network device responding to the random access mode to confirm that the terminal accesses the target cell as an example.
  • the second network device receives the access confirmation information sent by the terminal and confirms that the terminal accesses the target cell.
  • Figure 9 shows a block diagram of a switching device provided by an exemplary embodiment of the present application.
  • the device includes:
  • the receiving module 901 is configured to receive switching signaling sent by the first network device.
  • the switching signaling is determined by the first network device when it is determined that the beam measurement result satisfies the switching condition.
  • the beam measurement result is determined by the The terminal measures and determines at least one candidate cell;
  • the switching module 902 is configured to switch to the target cell indicated by the switching signaling in response to the switching signaling.
  • the switching signaling is a media access control unit MAC CE, or the switching signaling is downlink control information DCI.
  • the MAC CE when the handover signaling is the MAC CE, the MAC CE is used to activate the transmission indication configuration TCI state of a cell.
  • the DCI when the switching signaling is the DCI, the DCI indicates the TCI status corresponding to one of the activated cells.
  • the TCI states corresponding to the activated multiple cells are activated by MAC CE.
  • the handover signaling further includes a type indicator.
  • the handover signaling includes a handover indication field indicating the target cell.
  • the receiving module 901 is also configured to receive configuration signaling sent by the first network device, where the configuration signaling is used to configure the at least one candidate cell for the terminal.
  • the configuration signaling includes at least one of the following:
  • the configuration signaling is Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • the device further includes:
  • the measurement module 903 is configured to perform beam measurement on the at least one candidate cell and obtain the beam measurement result of the at least one candidate cell;
  • a reporting module 904 is configured to report at least one beam measurement result.
  • the switching module 902 is further configured to respond to the switching signaling and access the target cell indicated by the switching signaling through random access.
  • the switching module 902 is also configured to respond to the switching signaling when the TA has been obtained, and send an access confirmation to the second network device corresponding to the target cell based on the configured resources. information to switch to the target cell indicated by the handover signaling.
  • FIG 11 shows a block diagram of a switching device provided by an exemplary embodiment of the present application.
  • the device includes:
  • Determining module 1101 configured to determine handover signaling when it is determined that the beam measurement results meet the handover conditions
  • the sending module 1102 is configured to send the handover signaling to the terminal, the beam measurement result is determined by the terminal measuring at least one candidate cell, and the handover signaling instructs the terminal to switch to the cell indicated by the handover signaling. Target neighborhood.
  • the switching signaling is MAC CE, or the switching signaling is DCI.
  • the MAC CE when the handover signaling is the MAC CE, the MAC CE is used to activate the transmission indication configuration TCI state of a cell.
  • the DCI when the switching signaling is the DCI, the DCI indicates the TCI status corresponding to one of the activated cells.
  • the TCI states corresponding to the activated multiple cells are activated by MAC CE.
  • the handover signaling further includes a type indicator.
  • the handover signaling includes a handover indication field indicating the target cell.
  • the sending module 1102 is further configured to send configuration signaling to the terminal, where the configuration signaling is used to configure the at least one candidate cell for the terminal.
  • the configuration signaling includes at least one of the following:
  • the configuration signaling is RRC signaling.
  • the sending module 1102 is further configured to receive at least one beam measurement result sent by the terminal, where the beam measurement result is obtained by the terminal performing beam measurement on the at least one candidate cell.
  • the sending module 1102 is also configured to send response information to the central unit CU, where the response information instructs the terminal to perform cell switching and the target cell.
  • the device further includes:
  • the confirmation module 1101 is also configured to confirm that the terminal accesses the target cell in response to the terminal's random access mode.
  • the device further includes:
  • the confirmation module 1101 is also configured to receive access confirmation information sent by the terminal and confirm that the terminal accesses the target cell.
  • the access confirmation information is generated by the terminal in response to the TA when the TA has been obtained.
  • the above handover signaling is sent based on the configured resources.
  • the device further includes:
  • the determination module 1101 is also used to determine the at least one candidate cell according to the cell measurement results
  • the cell measurement results and the beam measurement results are measurement results of different layers.
  • Figure 12 shows a block diagram of a switching device provided by an exemplary embodiment of the present application.
  • the device includes:
  • the confirmation module 1201 is configured to respond to the terminal's random access mode and confirm that the terminal accesses the target cell of the second network device.
  • the confirmation module 1201 is also used to receive access confirmation information sent by the terminal and confirm that the terminal accesses the target cell.
  • the access confirmation information is obtained by the terminal after obtaining the TA. In this case, in response to the handover signaling, it is sent based on the configured resources.
  • Figure 13 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.
  • the communication device includes: a processor 1301, a receiver 1302, a transmitter 1303, a memory 1304 and a bus 1305.
  • the processor 1301 includes one or more processing cores.
  • the processor 1301 executes various functional applications and information processing by running software programs and modules.
  • the receiver 1302 and the transmitter 1303 can be implemented as a communication component, and the communication component can be a communication chip.
  • Memory 1304 is connected to processor 1301 through bus 1305.
  • the memory 1304 can be used to store at least one program code, and the processor 1301 is used to execute the at least one program code to implement each step in the above method embodiment.
  • Memory 1304 may be implemented by any type of volatile or non-volatile storage device, or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Static Read-Only Memory (SRAM), Read-Only Memory (ROM), Magnetic Memory, Flash Memory, Programmable Read-Only Memory (PROM).
  • EEPROM electrically erasable programmable read-only Memory
  • EPROM Erasable Programmable Read-Only Memory
  • SRAM Static Read-Only Memory
  • ROM Read-Only Memory
  • Magnetic Memory Flash Memory
  • PROM Programmable Read-Only Memory
  • a computer-readable storage medium is also provided, with executable program code stored in the readable storage medium, and the executable program code is loaded and executed by the processor to implement each of the above methods.
  • the example provides a handover method performed by a communication device.
  • a chip is provided.
  • the chip includes programmable logic circuits and/or program instructions. When the chip is run on a terminal or network device, it is used to implement as provided by various method embodiments. Switch method.
  • a computer program product is provided.
  • the computer program product is executed by a processor of a terminal or a network device, it is used to implement the switching method provided by each of the above method embodiments.

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Abstract

本申请公开了一种切换方法、装置、设备及存储介质，涉及移动通信领域。该方法包括：终端接收第一网络设备发送的切换信令，所述切换信令由所述第一网络设备在确定波束测量结果满足切换条件的情况下确定，所述波束测量结果由所述终端对至少一个候选小区测量确定；响应于所述切换信令，切换至所述切换信令指示的目标小区。本申请提供了一种网络设备根据波束测量结果控制终端进行小区切换的方案，保证网络设备在确定波束测量结果满足切换条件的情况下确定切换信令，终端根据该切换信令进行切换，打破了网络设备仅根据小区测量结果进行切换的局限性。

Description

切换方法、装置、设备及存储介质 技术领域
本申请涉及移动通信领域，特别涉及一种切换方法、装置、设备及存储介质。
背景技术
在移动通信系统中，网络设备覆盖有至少一个小区，终端在处于网络设备覆盖的小区范围内时，可以接入小区。而若终端移动至其他小区，需要进行小区切换。具体地，终端对小区进行测量，向网络设备上报得到的小区测量结果，网络设备会根据小区测量结果向终端返回切换信令，以指示终端进行切换。
但是，由于网络设备仅会根据终端上报的小区测量结果控制终端进行小区切换，具有局限性。
发明内容
本申请实施例提供了一种切换方法、装置、设备及存储介质，打破了网络设备仅根据小区测量结果进行切换的局限性。所述技术方案如下：
根据本申请的一个方面，提供了一种切换方法，所述方法由终端执行，所述方法包括：
接收第一网络设备发送的切换信令，所述切换信令由所述第一网络设备在确定波束测量结果满足切换条件的情况下确定，所述波束测量结果由所述终端对至少一个候选小区测量确定；
响应于所述切换信令，切换至所述切换信令指示的目标小区。
根据本申请的一个方面，提供了一种切换方法，所述方法由网络设备执行，所述方法包括：
在确定波束测量结果满足切换条件的情况下确定切换信令；
向终端发送所述切换信令，所述波束测量结果由所述终端对至少一个候选小区测量确定，所述切换信令指示所述终端切换至所述切换信令指示的目标小区。
根据本申请的一个方面，提供了一种切换方法，所述方法由网络设备执行，所述方法包括：
响应于终端的随机接入方式，确认所述终端接入所述第二网络设备的目标小区。
根据本申请的一个方面，提供了一种切换装置，所述装置包括：
接收模块，用于接收第一网络设备发送的切换信令，所述切换信令由所述第一网络设备在确定波束测量结果满足切换条件的情况下确定，所述波束测量结果由所述终端对至少一个候选小区测量确定；
切换模块，用于响应于所述切换信令，切换至所述切换信令指示的目标小区。
根据本申请的一个方面，提供了一种切换装置，所述装置包括：
确定模块，用于在确定波束测量结果满足切换条件的情况下确定切换信令；
发送模块，用于向终端发送所述切换信令，所述波束测量结果由所述终端对至少一个候选小区测量确定，所述切换信令指示所述终端切换至所述切换信令指示的目标小区。
根据本申请的一个方面，提供了一种切换装置，所述装置包括：
确认模块，用于响应于终端的随机接入方式，确认所述终端接入第二网络设备的目标小区。
根据本申请的一个方面，提供了一种终端，终端包括：处理器；与处理器相连的收发器；用于存储处理器的可执行指令的存储器；其中，处理器被配置为加载并执行可执行指令以实现如上述方面的切换方法。
根据本申请的一个方面，提供了一种网络设备，网络设备包括：处理器；与处理器相连的收发器；用于存储处理器的可执行指令的存储器；其中，处理器被配置为加载并执行可执行指令以实现如上述方面的切换方法。
根据本申请的一个方面，提供了一种计算机可读存储介质，可读存储介质中存储有可执行程序代码，可执行程序代码由处理器加载并执行以实现如上述方面的切换方法。
根据本申请的一个方面，提供了一种芯片，芯片包括可编程逻辑电路和/或程序指令，当芯片在终端或网络设备上运行时，用于实现如上述方面的切换方法。
根据本申请的一个方面，提供了一种计算机程序产品，当计算机程序产品 被终端或网络设备的处理器执行时，其用于实现上述方面的切换方法。
本申请实施例提供的方案中，提供了一种网络设备根据波束测量结果控制终端进行小区切换的方案，保证网络设备在确定波束测量结果满足切换条件的情况下确定切换信令，终端根据该切换信令进行切换，打破了网络设备仅根据小区测量结果进行切换的局限性。并且，本申请实施例中第一网络设备发送的切换信令指示目标小区即可，无需指示目标小区的参数信息，因此节省了信令开销，提高了切换到目标小区时效性。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出了本申请一个示例性实施例提供的通信系统的框图；
图2示出了本申请一个示例性实施例提供的切换方法的流程图；
图3示出了本申请一个示例性实施例提供的候选小区配置方法的流程图；
图4示出了本申请一个示例性实施例提供的候选小区测量方法的流程图；
图5示出了本申请一个示例性实施例提供的切换方法的流程图；
图6示出了本申请一个示例性实施例提供的切换方法的流程图；
图7示出了本申请一个示例性实施例提供的切换方法的流程图；
图8示出了本申请一个示例性实施例提供的切换方法的流程图；
图9示出了本申请一个示例性实施例提供的一种切换装置的框图；
图10示出了本申请一个示例性实施例提供的另一种切换装置的框图；
图11示出了本申请一个示例性实施例提供的一种切换装置的框图；
图12示出了本申请一个示例性实施例提供的一种切换装置的框图；
图13示出了本申请一个示例性实施例提供的通信设备的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描 述涉及附图时除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装置和方法的例子。
在本申请使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也是旨在包括多数形式，除非上下文清楚地表示其它含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本申请可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本申请范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，例如，在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
需要说明的是，本申请所涉及的信息(包括但不限于用户设备信息、用户个人信息等)、数据(包括但不限于用于分析的数据、存储的数据、展示的数据等)以及信号，均为经用户授权或者经过各方充分授权的，且相关数据的收集、使用和处理需要遵守相关国家和地区的相关法律法规和标准。
下面，对本申请的应用场景进行说明：
图1示出了本申请一个示例性实施例提供的通信系统的框图，该通信系统可以包括：终端10和网络设备20。
终端10的数量通常为多个，每一个网络设备20所管理的小区内可以分布一个或多个终端10。终端10可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的用户设备(User Equipment，UE)、移动台(Mobile Station，MS)等等。为方便描述，本申请实施例中，上面提到的设备统称为终端。
网络设备20是一种部署在接入网中用以为终端10提供无线通信功能的装置。为方便描述，本申请实施例中，上述为终端10提供无线通信功能的装置统称为网络设备。网络设备20与终端10之间可以通过空口建立连接，从而通过该连接进行通信，包括信令和数据的交互。网络设备20的数量可以有多个，两个邻近的网络设备20之间也可以通过有线或者无线的方式进行通信。终端10 可以在不同的网络设备20之间进行切换，也即与不同的网络设备20建立连接。
该网络设备20可以包括各种形式的宏基站、微基站、中继站、接入点等等。在采用不同的无线接入技术的系统中，具备网络设备功能的设备的名称可能会有所不同，例如在5G NR(New Radio，新空口)系统中，称为gNodeB或者gNB。随着通信技术的演进，“网络设备”这一名称可能会变化。
图2示出了本申请一个示例性实施例提供的切换方法的流程图，示例性的可以应用于如图1所示的终端和第一网络设备中，该方法包括以下内容中的至少部分内容：
步骤201：第一网络设备在确定波束测量结果满足切换条件的情况下确定切换信令。
其中，该波束测量结果是指终端进行L1(层1)测量所得到的结果。
切换条件是指供终端进行小区切换的判断条件。若网络设备确定候选小区的波束测量结果满足切换条件，则可以指示终端切换至满足切换条件的候选小区。
在一些实施例中，该切换条件是指候选小区的波束测量结果的平均值或者最大值大于预设阈值，也就是说，在候选小区的波束测量结果的平均值大于预设阈值的情况下，确定满足切换条件。或者，在候选小区的波束测量结果的最大值大于预设阈值的情况下，确定满足切换条件。
在另一些实施例中，该切换条件是指波束测量结果中前N个最佳测量结果为候选小区的测量结果，N为正整数，也就是说，在候选小区的测量结果为前N个最佳测量结果的情况下，确定满足切换条件。
在另一些实施例中，该切换条件是指候选小区的最佳波束的测量结果大于服务小区的最佳波束的测量结果与第一偏移值(offset1)的和值，也就是说，在候选小区的最佳波束的测量结果大于服务小区的最佳波束的测量结果与第一偏移值的和值的情况下，确定满足切换条件。
在另一些实施例中，该切换条件是指候选小区的波束测量结果的平均值大于服务小区的波束测量结果的平均值与第二偏移值(offset2)的和值，也就是说，在候选小区的波束测量结果的平均值大于服务小区的波束测量结果的平均值与第二偏移值的和值的情况下，确定满足切换条件。
需要说明的是，本申请实施例中第一网络设备确定波束测量结果是否满足 切换条件是根据第一网络设备自身规则实现的，本申请并不对第一网络设备确定波束测量结果是否满足切换条件进行限定。
例如，第一网络设备确定波束测量结果满足切换条件后，还会判断当前负载是否满足切换条件，在当前负载满足切换条件的情况下确定切换信令。
在本申请实施例中，该波束测量结果包括对至少一个候选小区测量的测量结果。也就是说，终端对至少一个候选小区进行测量，得到至少一个候选小区的波束测量结果，向网络设备上报至少一个候选小区的波束测量结果，网络设备接收到终端发送的波束测量结果后，即可根据波束测量结果确定切换信令。
其中，候选小区是指终端需要进行波束测量的小区。在一些实施例中，至少一个候选小区由网络设备配置。
步骤202：第一网络设备向终端发送切换信令，波束测量结果由终端对至少一个候选小区测量确定，切换信令指示终端切换至切换信令指示的目标小区。
在一些实施例中，该第一网络设备对应源小区，也可以成为sourcecell(源小区)。
可选地，该第一网络设备还会向CU(Central Unit,中央单元)发送响应信息，该响应信息指示终端进行小区切换以及目标小区，CU接收到第一网络设备发送的响应信息后，即可确定终端下一步要进行切换以及切换到的目标小区。
其中，CU是指控制第一网络设备的设备，并且该CU还可以控制目标小区对应的第二网络设备。
在一些实施例中，CU属于gNB中的一个单元。可选地，将原有的gNB概念拆分成一个CU和多个DU(Distributed Unit,分布式单元)，CU就是一个中央单元，CU用于控制多个DU。本申请实施例不限于上述一种拆分形式，还可以有不同的拆分形式。
步骤203：终端接收第一网络设备发送的切换信令，切换信令由第一网络设备在确定波束测量结果满足切换条件的情况下确定，波束测量结果由终端对至少一个候选小区测量确定。
在本申请实施例中，第一网络设备接收到终端上报的波束测量结果，则网络设备可以根据至少一个候选小区的波束测量结果判断是否满足切换条件，在确定波束测量结果满足切换条件的情况下确定切换信令，向终端发送切换信令，终端接收到该切换信令后，即可确定第一网络设备指示终端切换至目标小区。
步骤204：终端响应于切换信令，切换至切换信令指示的目标小区。
在本申请实施例中，终端接收到第一网络设备发送的切换信令，由于该切换信令指示终端切换至切换信令指示的目标小区，因此终端响应于该切换信令，切换至该切换信令指示的目标小区。
需要说明的是，本申请实施例中终端所执行的步骤可以单独形成一个新的实施例，网络设备所执行的步骤也可以单独形成一个新的实施例，本申请实施例不作限定。
本申请实施例提供的方案中，提供了一种网络设备根据波束测量结果控制终端进行小区切换的方案，保证网络设备在确定波束测量结果满足切换条件的情况下确定切换信令，终端根据该切换信令进行切换，打破了网络设备仅根据小区测量结果进行切换的局限性。
并且，本申请实施例中第一网络设备发送的切换信令指示目标小区即可，无需指示目标小区的参数信息，因此节省了信令开销，提高了切换到目标小区时效性。
图2实施例以网络设备确定指示终端进行切换为例进行说明。而下面对网络设备如何为终端配置至少一个候选小区进行说明。图3示出了本申请一个示例性实施例提供的候选小区配置方法的流程图，示例性的可以应用于如图1所示的终端和网络设备中，该方法包括以下内容中的至少部分内容：
步骤301：第一网络设备向终端发送配置信令，该配置信令用于为终端配置至少一个候选小区。
在本申请实施例中，第一网络设备可以确定至少一个候选小区，进而向终端发送配置信令，以为终端配置第一网络设备已确定的至少一个候选小区。
在一些实施例中，第一网络设备根据小区测量结果，确定至少一个候选小区，小区测量结果与波束测量结果为不同层的测量结果。
其中，该小区测量结果是指终端进行L3(层3)测量所得到的结果。
在本申请实施例中，第一网络设备可以获知至少一个邻小区的小区测量结果，第一网络设备可以根据邻小区的小区测量结果确定至少一个候选小区，进而第一网络设备向终端发送配置信令，为终端配置确定的至少一个候选小区。
步骤302：终端接收第一网络设备发送的配置信令。
在本申请实施例中，终端接收到该第一网络设备发送的配置信令后，即可确定第一网络设备为终端配置的至少一个候选小区，则终端可以对至少一个候 选小区进行波束测量，得到至少一个候选小区的波束测量结果。
在一些实施例中，该配置信令包括以下至少一项：
(1)候选小区的TCI(Transmission Configuration Indicator,传输指示配置)状态。
其中，该TCI状态用于进行波束指示。候选小区的TCI状态实际是是指该候选小区的波束。
(2)用于进行随机接入的资源。
其中，随机接入是指终端可以通过随机接入的方式接入目标小区。用于进行随机接入的资源是指在随机接入过程中用于传输信息的资源。
(3)用于向目标小区发送接入确认信息的资源。
其中，该接入确认信息用于指示终端已接入目标小区。
在一些实施例中，配置信令为RRC(Radio Resource Control,无线资源控制层)信令，或者，该配置信令还可以为其他类型的信令，本申请实施例不作限定。
在一些实施例中，用于向目标小区发送接入确认信息的资源为PUSCH(Physical Uplink Shared Channel,物理层上行共享信道)资源。例如，终端通过PUSCH资源向目标小区发送MAC CE(Media Access Control Control Element,媒体访问控制控制单元)以指示成功接入目标小区。
在另一些实施例中，用于向目标小区发送接入确认信息的资源为SR资源。例如，终端通过SR资源向目标小区发送SR(Scheduling Request,调度请求)以指示成功接入目标小区。
本申请实施例提供的方案中，网络设备为终端配置至少一个候选小区，以便于终端对至少一个候选小区进行波束测量，得到波束测量结果，进而由网络设备根据波束测量结果确定切换信令，以指示终端进行切换，打破了网络设备仅根据小区测量结果进行切换的局限性。并且，本申请实施例中第一网络设备提前通过配置信令为终端配置候选小区的参数信息，因此第一网络设备发送的切换信令直接指示目标小区即可，无需再指示目标小区的参数信息，因此节省了信令开销，提高了切换到目标小区时效性。
图2实施例以网络设备根据波束测量结果确定切换信令为例进行说明。而下面对终端如何上报至少一个候选小区的波束测量结果进行说明。图4示出了 本申请一个示例性实施例提供的候选小区测量方法的流程图，示例性的可以应用于如图1所示的终端和网络设备中，该方法包括以下内容中的至少部分内容：
步骤401：终端对至少一个候选小区进行波束测量，得到至少一个候选小区的波束测量结果。
在本申请实施例中，终端已确定至少一个候选小区，则终端可以对至少一个候选小区进行波束测量，以得到至少一个候选小区的波束测量结果。
例如，该波束测量结果为基于L1的测量结果，因此终端是对至少一个候选小区进行L1的波束测量，以得到波束测量结果。
步骤402：终端上报至少一个波束测量结果。
在本申请实施例中，终端对至少一个候选小区进行测量得到每个候选小区的波束测量结果，后续终端即可上报得到的至少一个波束测量结果。
在一些实施例中，终端向网络设备发送至少一个候选小区的波束测量结果。
在另一些实施例中，终端从至少一个候选小区的波束测量结果中选择部分候选小区的波束测量结果，向网络设备发送选择的部分候选小区的波束测量结果。
步骤403：第一网络设备接收终端发送的至少一个波束测量结果，波束测量结果由终端对至少一个候选小区进行波束测量得到。
终端上报至少一个波束测量结果后，第一网络设备即可接收终端上报的至少一个波束测量结果，进而可以执行后续确定切换信令的步骤。
需要说明的是，本申请实施例是以执行一次步骤401-403为例进行说明。而在另一实施例中，上述步骤401-403可以执行多次，也就是说终端可以多次上报波束测量结果，则第一网络设备也可以多次接收波束测量结果，进而多次执行步骤201，以动态指示终端进行小区切换。
在一些实施例中，终端每隔预设时长进行一次波束测量，进而上报波束测量结果，第一网络设备也就会每隔预设时长接收一次波束测量结果，进而根据接收的波束测量结果确定是否发送切换信令，也就是说实现了动态的切换。
例如，该预设时长由网络设备设置，或者由通信协议约定，或者采用其他方式设置，本申请实施例不做限定。
本申请实施例提供的方案中，终端通过对至少一个候选小区进行波束测量，进而上报得到的波束测量结果，以便于第一网络设备基于接收的波束测量结果确定切换信令，以指示终端进行切换，打破了网络设备仅根据小区测量结果进 行切换的局限性。并且，本申请实施例中第一网络设备发送的切换信令指示目标小区即可，无需指示目标小区的参数信息，因此节省了信令开销，提高了切换到目标小区时效性。
图2所示实施例对第一网络设备发送切换信令以指示终端进行切换为例进行说明。下面对第一网络设备发送的切换信令进行说明。
在一些实施例中，该切换信令为MAC CE，或者，该切换信令为DCI(Downlink Control Information，下行控制信息)。
在本申请实施例中，第一网络设备向终端发送的切换信令可以为MAC CE，终端接收到该MAC CE后即可执行切换。
又或者，第一网络设备向终端发送的切换信令可以为DCI，终端接收到该DCI后即可执行切换。
需要说明的是，该切换信令采用不同的方式来指示TCI状态来指示目标小区。
在一些实施例中，在切换信令为MAC CE的情况下，该MAC CE用于激活一个小区的TCI状态。
也就是说，若第一网络设备确定的切换信令为MAC CE，则第一网络设备向终端发送MAC CE，通过该MAC CE用于指示一个小区的TCI状态，并且默认该TCI状态对应的小区为目标小区。
在另一些实施例中，在切换信令为DCI的情况下，该DCI用于指示已激活的多个小区中的一个小区对应的TCI状态。
也就是说，若第一网络设备确定的切换信令为DCI，而在发送DCI之前，第一网络设备已为终端激活了多个小区对应的TCI状态，通过发送的DCI来指示已激活的多个小区中的一个小区对应的TCI状态，进而说明该TCI状态对应的小区为目标小区。
可选地，已激活的多个小区对应的TCI状态由MAC CE激活。也就是说，第一网络设备需要先向终端发送MAC CE，通过该MAC CE激活多个小区的TCI状态，进而再通过DCI来指示已激活的多个小区中的一个小区的TCI状态。
需要说明的是，本申请实施例中第一网络设备和第二网络设备由不同的DU管理，则第一网络设备可以直接发送上述切换信令指示的TCI状态进行小区切换。而在另一些实施例中，第一网络设备和第二网络设备还存在应用于intra-DU 的情况，也就是第一网络设备和第二网络设备对应的小区均由同一个DU管理。在此情况下，第一网络设备和第二网络设备不仅需要考虑切换信令指示的TCI状态，还需要考虑类型指示符。
在一些实施例中，该切换信令还包括类型指示符，该类型指示符用于指示是否进行小区切换。
在本申请实施例中，由于第一网络设备已激活了多个TCI状态，因此对于每个TCI状态，还指示每个TCI状态对应的类型指示符，以便于通过DCI来指示多个小区中一个小区的TCI状态时，基于TCI状态对应的目标小区以及类型指示符确定是否切换至目标小区。
例如，该类型指示符包括1比特。在该类型指示符为0的情况下，终端根据TCI状态对应的目标小区以及该类型指示符，确定不切换至目标小区。在该类型指示符为1的情况下，终端根据TCI状态对应的目标小区以及该类型指示符，确定切换至目标小区。
需要说明的是，本申请实施例是以通过指示TCI状态的方式来指示目标小区为例进行说明。而在另一实施例中，该切换信令还包括切换指示域，该切换指示域指示目标小区。
在本申请实施例中，第一网络设备直接在切换信令中设置切换指示域，通过该切换指示域直接指示目标小区。
在一些实施例中，该切换指示域用于指示目标小区的标识。例如，该目标小区的标识为目标小区的ID。
在一些实施例中，该切换指示域包括预设数量的比特，该预设数量的比特的数值不同，指示不同目标小区。
该预设数量由网络设备设置，或者由通信协议约定，或者采用其他方式设置，本申请实施例不作限定。例如，该预设数量为2、3、4或者其他数值。
例如，若该预设数量为2，则第一网络设备通过2比特的切换指示域来指示4个不同的目标小区。若该切换指示域为00，则指示目标小区1，或者，若该切换指示域为01，则指示目标小区2，或者，若该切换指示域为10，则指示目标小区3，或者，若该切换指示域为11，则指示目标小区4。
本申请实施例提供的方案中，第一网络设备可以采用多种形式的切换信令来指示终端切换至目标小区，扩展了第一网络设备发送切换信令的方式，提高了切换信令的多样性。
图2所示实施例是对终端可以切换至切换信令指示的小区为例进行说明。下面将对终端采用何种方式切换至目标小区进行说明。
在一些实施例中，终端响应于切换信令，通过随机接入方式接入到切换信令指示的目标小区。
其中，该随机接入方式是指终端向目标小区对应的第二网络设备发送随机接入前导码，第二网络设备接收随机接入前导码，响应于该随机接入前导码发送随机接入响应，终端接收该随机接入响应后发送RRC连接请求，第二网络设备接收该RRC连接请求后完成接入。
也就是说，本申请实施例接收到切换信令，响应于该切换信令，通过上述随机接入方式即可切换至目标小区。
在一些实施例中，用于随机接入的资源由配置信令配置。具体参见上述实施例中配置信令包括的用于进行随机接入的资源。
需要说明的是，第二网络设备会响应于终端的随机接入方式，确定终端接收该第二网络设备的目标小区。
本申请实施例提供的方案中，终端接收到切换信令后，响应于该切换信令即可通过随机接入信令切换至目标小区，打破了网络设备仅根据小区测量结果进行切换的局限性。并且，本申请实施例中第一网络设备发送的切换信令指示目标小区即可，无需指示目标小区的参数信息，因此节省了信令开销，提高了切换到目标小区时效性。
需要说明的是，上述实施例是以终端通过随机接入方式切换至目标小区为例进行说明。而在另一实施例中，若终端已获取TA(Timing Advance，定时提前)，则终端可以直接切换至目标小区。
在本申请实施例中，在已获取TA的情况下，响应于切换信令，基于已配置资源向目标小区对应的第二网络设备发送接入确认信息，切换至切换信令指示的目标小区。
在本申请实施例中，该TA用于指示终端的定时提前，也就是终端根据该TA可以完成上行同步，因此终端可以响应于接收的切换信令，基于已配置资源向目标小区对应的第二网络设备发送接入确认信息，通过该接入确认信息告知第二网络设备该终端接入目标小区，进而通过目标小区进行通信。
需要说明的是，第二网络设备接收终端发送的接入确认信息，确定终端接 收该第二网络设备的目标小区。
本申请实施例提供的方案中，终端接收到切换信令后，若已获取TA，则响应于该切换信令发送接入确认信息，进而切换至目标小区，打破了网络设备仅根据小区测量结果进行切换的局限性。并且，本申请实施例中第一网络设备发送的切换信令指示目标小区即可，无需指示目标小区的参数信息，因此节省了信令开销，提高了切换到目标小区时效性。
下面，对上述实施例进行举例说明。以第一网络设备配置的小区为源小区，第二网络设备配置的小区为目标小区，CU为gNB-CU为例，参考图5，图5示出了本申请一个示例性实施例提供的切换方法的流程图，该方法包括以下内容中的至少部分内容：
步骤501：终端对至少一个候选小区进行波束测量，向源小区发送得到的波束测量结果。
步骤502：源小区根据波束测量结果，确定满足切换条件的情况下确定切换信令。
步骤503：源小区向gNB-CU发送响应信息，该响应信息指示终端进行小区切换以及目标小区。
CU接收到第一网络设备发送的响应信息后，即可确定终端下一步要进行切换以及切换到的目标小区。
步骤504：gNB-CU根据响应信息，向源小区返回确认信息。
步骤505：源小区向终端发送切换信令。
步骤506：终端通过随机接入方式或者接入确认信息切换至目标小区。
需要说明的是，本申请实施例中终端所执行的步骤可以单独形成一个新的实施例，网络设备所执行的步骤也可以单独形成一个新的实施例，本申请实施例不做限定。
需要说明的是，上述实施例可以拆分为新实施例，或与其他实施例互相组合为新实施例，本申请对实施例之间的组合不做限定。
图6示出了本申请一个示例性实施例提供的切换方法的流程图，示例性的可以应用于如图1所示的终端中，该方法包括以下内容中的至少部分内容：
步骤601：终端接收第一网络设备发送的切换信令，切换信令由第一网络设 备在确定波束测量结果满足切换条件的情况下确定，波束测量结果由终端对至少一个候选小区测量确定。
其中，该波束测量结果是指终端进行L1(层1)测量所得到的结果。
切换条件是指供终端进行小区切换的判断条件。若网络设备确定候选小区的波束测量结果满足切换条件，则可以指示终端切换至满足切换条件的候选小区。
在一些实施例中，该切换条件是指候选小区的波束测量结果的平均值或者最大值大于预设阈值，也就是说，在候选小区的波束测量结果的平均值大于预设阈值的情况下，确定满足切换条件。或者，在候选小区的波束测量结果的最大值大于预设阈值的情况下，确定满足切换条件。
在另一些实施例中，该切换条件是指波束测量结果中前N个最佳测量结果为候选小区的测量结果，N为正整数，也就是说，在候选小区的测量结果为前N个最佳测量结果的情况下，确定满足切换条件。
在另一些实施例中，该切换条件是指候选小区的最佳波束的测量结果大于服务小区的最佳波束的测量结果与第一偏移值(offset1)的和值，也就是说，在候选小区的最佳波束的测量结果大于服务小区的最佳波束的测量结果与第一偏移值的和值的情况下，确定满足切换条件。
在另一些实施例中，该切换条件是指候选小区的波束测量结果的平均值大于服务小区的波束测量结果的平均值与第二偏移值(offset2)的和值，也就是说，在候选小区的波束测量结果的平均值大于服务小区的波束测量结果的平均值与第二偏移值的和值的情况下，确定满足切换条件。
需要说明的是，本申请实施例中第一网络设备确定波束测量结果是否满足切换条件是根据第一网络设备自身规则实现的，本申请并不对第一网络设备确定波束测量结果是否满足切换条件进行限定。
例如，第一网络设备确定波束测量结果满足切换条件后，还会判断当前负载是否满足切换条件，在当前负载满足切换条件的情况下确定切换信令。
在本申请实施例中，第一网络设备接收到终端上报的波束测量结果，则网络设备可以根据至少一个候选小区的波束测量结果判断是否满足切换条件，在确定波束测量结果满足切换条件的情况下确定切换信令，向终端发送切换信令，终端接收到该切换信令后，即可确定第一网络设备指示终端切换至目标小区。
步骤602：终端响应于切换信令，切换至切换信令指示的目标小区。
在本申请实施例中，终端接收到第一网络设备发送的切换信令，由于该切换信令指示终端切换至切换信令指示的目标小区，因此终端响应于该切换信令，切换至该切换信令指示的目标小区。
本申请实施例提供的方案中，提供了一种网络设备根据波束测量结果控制终端进行小区切换的方案，保证网络设备在确定波束测量结果满足切换条件的情况下确定切换信令，终端根据该切换信令进行切换，打破了网络设备仅根据小区测量结果进行切换的局限性。
并且，本申请实施例中第一网络设备发送的切换信令指示目标小区即可，无需指示目标小区的参数信息，因此节省了信令开销，提高了切换到目标小区时效性。
在一些实施例中，终端接收第一网络设备发送的配置信令。
在本申请实施例中，终端接收到该第一网络设备发送的配置信令后，即可确定第一网络设备为终端配置的至少一个候选小区，则终端可以对至少一个候选小区进行波束测量，得到至少一个候选小区的波束测量结果。
在一些实施例中，该配置信令包括以下至少一项：
(1)候选小区的TCI状态。
其中，该TCI状态用于进行波束指示。候选小区的TCI状态实际是是指该候选小区的波束。
(2)用于进行随机接入的资源。
其中，随机接入是指终端可以通过随机接入的方式接入目标小区。用于进行随机接入的资源是指在随机接入过程中用于传输信息的资源。
(3)用于向目标小区发送接入确认信息的资源。
其中，该接入确认信息用于指示终端已接入目标小区。
在一些实施例中，配置信令为RRC信令，或者，该配置信令还可以为其他类型的信令，本申请实施例不作限定。
在一些实施例中，用于向目标小区发送接入确认信息的资源为PUSCH资源。例如，终端通过PUSCH资源向目标小区发送MAC CE以指示成功接入目标小区。
在另一些实施例中，用于向目标小区发送接入确认信息的资源为SR资源。例如，终端通过SR资源向目标小区发送SR以指示成功接入目标小区。
在一些实施例中，终端对至少一个候选小区进行波束测量，得到至少一个 候选小区的波束测量结果。终端上报至少一个波束测量结果。
在本申请实施例中，终端已确定至少一个候选小区，则终端可以对至少一个候选小区进行波束测量，以得到至少一个候选小区的波束测量结果。
例如，该波束测量结果为基于L1的测量结果，因此终端是对至少一个候选小区进行L1的波束测量，以得到波束测量结果。
在本申请实施例中，终端对至少一个候选小区进行测量得到每个候选小区的波束测量结果，后续终端即可上报得到的至少一个波束测量结果。
在一些实施例中，终端向网络设备发送至少一个候选小区的波束测量结果。
在另一些实施例中，终端从至少一个候选小区的波束测量结果中选择部分候选小区的波束测量结果，向网络设备发送选择的部分候选小区的波束测量结果。
在一些实施例中，终端每隔预设时长进行一次波束测量，进而上报波束测量结果，第一网络设备也就会每隔预设时长接收一次波束测量结果，进而根据接收的波束测量结果确定是否发送切换信令，也就是说实现了动态的切换。
例如，该预设时长由网络设备设置，或者由通信协议约定，或者采用其他方式设置，本申请实施例不做限定。
在一些实施例中，该切换信令为MAC CE，或者，该切换信令为DCI。
在本申请实施例中，第一网络设备向终端发送的切换信令可以为MAC CE，终端接收到该MAC CE后即可执行切换。
又或者，第一网络设备向终端发送的切换信令可以为DCI，终端接收到该DCI后即可执行切换。
需要说明的是，该切换信令采用不同的方式来指示TCI状态来指示目标小区。
在一些实施例中，在切换信令为MAC CE的情况下，该MAC CE用于激活一个小区的TCI状态。
也就是说，若第一网络设备确定的切换信令为MAC CE，则第一网络设备向终端发送MAC CE，通过该MAC CE用于指示一个小区的TCI状态，并且默认该TCI状态对应的小区为目标小区。
在另一些实施例中，在切换信令为DCI的情况下，该DCI用于指示已激活的多个小区中的一个小区对应的TCI状态。
也就是说，若第一网络设备确定的切换信令为DCI，而在发送DCI之前， 第一网络设备已为终端激活了多个小区对应的TCI状态，通过发送的DCI来指示已激活的多个小区中的一个小区对应的TCI状态，进而说明该TCI状态对应的小区为目标小区。
可选地，已激活的多个小区对应的TCI状态由MAC CE激活。也就是说，第一网络设备需要先向终端发送MAC CE，通过该MAC CE激活多个小区的TCI状态，进而再通过DCI来指示已激活的多个小区中的一个小区的TCI状态。
需要说明的是，本申请实施例中第一网络设备和第二网络设备由不同的DU管理，则第一网络设备可以直接发送上述切换信令指示的TCI状态进行小区切换。而在另一些实施例中，第一网络设备和第二网络设备还存在应用于intra-DU的情况，也就是第一网络设备和第二网络设备对应的小区均由同一个DU管理。在此情况下，第一网络设备和第二网络设备不仅需要考虑切换信令指示的TCI状态，还需要考虑类型指示符。
在一些实施例中，该切换信令还包括类型指示符，该类型指示符用于指示是否进行小区切换。
在一些实施例中，该切换信令还包括类型指示符。该类型指示符用于指示是否进行小区切换。
在本申请实施例中，由于第一网络设备已激活了多个TCI状态，因此对于每个TCI状态，还指示每个TCI状态对应的类型指示符，以便于通过DCI来指示多个小区中一个小区的TCI状态时，基于TCI状态对应的目标小区以及类型指示符确定是否切换至目标小区。
例如，该类型指示符包括1比特。在该类型指示符为0的情况下，终端根据TCI状态对应的目标小区以及该类型指示符，确定不切换至目标小区。在该类型指示符为1的情况下，终端根据TCI状态对应的目标小区以及该类型指示符，确定切换至目标小区。
需要说明的是，本申请实施例是以通过指示TCI状态的方式来指示目标小区为例进行说明。而在另一实施例中，该切换信令还包括切换指示域，该切换指示域指示目标小区。
在本申请实施例中，第一网络设备直接在切换信令中设置切换指示域，通过该切换指示域直接指示目标小区。
在一些实施例中，该切换指示域用于指示目标小区的标识。例如，该目标小区的标识为目标小区的ID。
在一些实施例中，该切换指示域包括预设数量的比特，该预设数量的比特的数值不同，指示不同目标小区。
该预设数量由网络设备设置，或者由通信协议约定，或者采用其他方式设置，本申请实施例不作限定。例如，该预设数量为2、3、4或者其他数值。
例如，若该预设数量为2，则第一网络设备通过2比特的切换指示域来指示4个不同的目标小区。若该切换指示域为00，则指示目标小区1，或者，若该切换指示域为01，则指示目标小区2，或者，若该切换指示域为10，则指示目标小区3，或者，若该切换指示域为11，则指示目标小区4。
在一些实施例中，终端响应于切换信令，通过随机接入方式接入到切换信令指示的目标小区。
其中，该随机接入方式是指终端向目标小区对应的第二网络设备发送随机接入前导码，第二网络设备接收随机接入前导码，响应于该随机接入前导码发送随机接入响应，终端接收该随机接入响应后发送RRC连接请求，第二网络设备接收该RRC连接请求后完成接入。
也就是说，本申请实施例接收到切换信令，响应于该切换信令，通过上述随机接入方式即可切换至目标小区。
在一些实施例中，用于随机接入的资源由配置信令配置。具体参见上述实施例中配置信令包括的用于进行随机接入的资源。
本申请实施例提供的方案中，终端接收到切换信令后，响应于该切换信令即可通过随机接入信令切换至目标小区，打破了网络设备仅根据小区测量结果进行切换的局限性。并且，本申请实施例中第一网络设备发送的切换信令指示目标小区即可，无需指示目标小区的参数信息，因此节省了信令开销，提高了切换到目标小区时效性。
需要说明的是，上述实施例是以终端通过随机接入方式切换至目标小区为例进行说明。而在另一实施例中，若终端已获取TA，则终端可以直接切换至目标小区。
在本申请实施例中，在已获取TA的情况下，响应于切换信令，基于已配置资源向目标小区对应的第二网络设备发送接入确认信息，切换至切换信令指示的目标小区。
在本申请实施例中，该TA用于指示终端的定时提前，也就是终端根据该TA可以完成上行同步，因此终端响应于接收的切换信令，基于已配置资源向目 标小区对应的第二网络设备发送接入确认信息，通过该接入确认信息告知第二网络设备该终端可以接入目标小区，进而通过目标小区进行通信。
本申请实施例提供的方案中，终端接收到切换信令后，若以获取TA，则响应于该切换信令发送接入确认信息，进而切换至目标小区，打破了网络设备仅根据小区测量结果进行切换的局限性。并且，本申请实施例中第一网络设备发送的切换信令指示目标小区即可，无需指示目标小区的参数信息，因此节省了信令开销，提高了切换到目标小区时效性。
图7示出了本申请一个示例性实施例提供的切换方法的流程图，示例性的可以应用于如图1所示的第一网络设备中，该方法包括以下内容中的至少部分内容：
步骤701：第一网络设备在确定波束测量结果满足切换条件的情况下确定切换信令。
其中，该波束测量结果是指终端进行L1(层1)测量所得到的结果。
切换条件是指供终端进行小区切换的判断条件。若网络设备确定候选小区的波束测量结果满足切换条件，则可以指示终端切换至满足切换条件的候选小区。
在一些实施例中，该切换条件是指候选小区的波束测量结果的平均值或者最大值大于预设阈值，也就是说，在候选小区的波束测量结果的平均值大于预设阈值的情况下，确定满足切换条件。或者，在候选小区的波束测量结果的最大值大于预设阈值的情况下，确定满足切换条件。
在另一些实施例中，该切换条件是指波束测量结果中前N个最佳测量结果为候选小区的测量结果，N为正整数，也就是说，在候选小区的测量结果为前N个最佳测量结果的情况下，确定满足切换条件。
在另一些实施例中，该切换条件是指候选小区的最佳波束的测量结果大于服务小区的最佳波束的测量结果与第一偏移值(offset1)的和值，也就是说，在候选小区的最佳波束的测量结果大于服务小区的最佳波束的测量结果与第一偏移值的和值的情况下，确定满足切换条件。
在另一些实施例中，该切换条件是指候选小区的波束测量结果的平均值大于服务小区的波束测量结果的平均值与第二偏移值(offset2)的和值，也就是说，在候选小区的波束测量结果的平均值大于服务小区的波束测量结果的平均值与 第二偏移值的和值的情况下，确定满足切换条件。
需要说明的是，本申请实施例中第一网络设备确定波束测量结果是否满足切换条件是根据第一网络设备自身规则实现的，本申请并不对第一网络设备确定波束测量结果是否满足切换条件进行限定。
例如，第一网络设备确定波束测量结果满足切换条件后，还会判断当前负载是否满足切换条件，在当前负载满足切换条件的情况下确定切换信令。
在本申请实施例中，该波束测量结果包括对至少一个候选小区测量的测量结果。也就是说，终端对至少一个候选小区进行测量，得到至少一个候选小区的波束测量结果，向网络设备上报至少一个候选小区的波束测量结果，网络设备接收到终端发送的波束测量结果后，即可根据波束测量结果确定切换信令。
其中，候选小区是指终端需要进行波束测量的小区。在一些实施例中，至少一个候选小区由网络设备配置。
步骤702：第一网络设备向终端发送切换信令，波束测量结果由终端对至少一个候选小区测量确定，切换信令指示终端切换至切换信令指示的目标小区。
在一些实施例中，该第一网络设备对应源小区，也可以成为sourcecell(源小区)。
可选地，该第一网络设备还会向CU发送响应信息，该响应信息指示终端进行小区切换以及目标小区，CU接收到第一网络设备发送的响应信息后，即可确定终端下一步要进行切换以及切换到的目标小区。
其中，CU是指控制第一网络设备的设备，并且该CU还可以控制目标小区对应的第二网络设备。
在本申请实施例中，第一网络设备接收到终端上报的波束测量结果，则网络设备可以根据至少一个候选小区的波束测量结果判断是否满足切换条件，在确定波束测量结果满足切换条件的情况下确定切换信令，向终端发送切换信令，终端接收到该切换信令后，即可确定第一网络设备指示终端切换至目标小区。
本申请实施例提供的方案中，提供了一种网络设备根据波束测量结果控制终端进行小区切换的方案，保证网络设备在确定波束测量结果满足切换条件的情况下确定切换信令，终端根据该切换信令进行切换，打破了网络设备仅根据小区测量结果进行切换的局限性。
并且，本申请实施例中第一网络设备发送的切换信令指示目标小区即可，无需指示目标小区的参数信息，因此节省了信令开销，提高了切换到目标小区 时效性。
在一些实施例中，第一网络设备向终端发送配置信令，该配置信令用于为终端配置至少一个候选小区。
在本申请实施例中，第一网络设备可以确定至少一个候选小区，进而向终端发送配置信令，以为终端配置第一网络设备已确定的至少一个候选小区。
在一些实施例中，第一网络设备根据小区测量结果，确定至少一个候选小区，小区测量结果与波束测量结果为不同层的测量结果。
其中，该小区测量结果是指终端进行L3(层3)测量所得到的结果。
在本申请实施例中，第一网络设备可以获知至少一个邻小区的小区测量结果，第一网络设备可以根据邻小区的小区测量结果确定至少一个候选小区，进而第一网络设备向终端发送配置信令，为终端配置确定的至少一个候选小区。
在一些实施例中，该配置信令包括以下至少一项：
(1)候选小区的TCI状态。
其中，该TCI状态用于进行波束指示。候选小区的TCI状态实际是是指该候选小区的波束。
(2)用于进行随机接入的资源。
其中，随机接入是指终端可以通过随机接入的方式接入目标小区。用于进行随机接入的资源是指在随机接入过程中用于传输信息的资源。
(3)用于向目标小区发送接入确认信息的资源。
其中，该接入确认信息用于指示终端已接入目标小区。
在一些实施例中，配置信令为RRC信令，或者，该配置信令还可以为其他类型的信令，本申请实施例不作限定。
在一些实施例中，用于向目标小区发送接入确认信息的资源为PUSCH资源。例如，终端通过PUSCH资源向目标小区发送MAC CE以指示成功接入目标小区。
在另一些实施例中，用于向目标小区发送接入确认信息的资源为SR资源。例如，终端通过SR资源向目标小区发送SR以指示成功接入目标小区。
在一些实施例中，第一网络设备接收终端发送的至少一个波束测量结果，波束测量结果由终端对至少一个候选小区进行波束测量得到。
终端上报至少一个波束测量结果后，第一网络设备即可接收终端上报的至少一个波束测量结果，进而可以执行后续确定切换信令的步骤。
在另一实施例中，终端可以多次上报波束测量结果，则第一网络设备也可以多次接收波束测量结果，进而多次执行步骤201，以动态指示终端进行小区切换。
在一些实施例中，终端每隔预设时长进行一次波束测量，进而上报波束测量结果，第一网络设备也就会每隔预设时长接收一次波束测量结果，进而根据接收的波束测量结果确定是否发送切换信令，也就是说实现了动态的切换。
例如，该预设时长由网络设备设置，或者由通信协议约定，或者采用其他方式设置，本申请实施例不做限定。
在一些实施例中，该切换信令为MAC CE，或者，该切换信令为DCI。
在本申请实施例中，第一网络设备向终端发送的切换信令可以为MAC CE，终端接收到该MAC CE后即可执行切换。
又或者，第一网络设备向终端发送的切换信令可以为DCI，终端接收到该DCI后即可执行切换。
需要说明的是，该切换信令采用不同的方式来指示TCI状态来指示目标小区。
在一些实施例中，在切换信令为MAC CE的情况下，该MAC CE用于激活一个小区的TCI状态。
也就是说，若第一网络设备确定的切换信令为MAC CE，则第一网络设备向终端发送MAC CE，通过该MAC CE用于指示一个小区的TCI状态，并且默认该TCI状态对应的小区为目标小区。
在另一些实施例中，在切换信令为DCI的情况下，该DCI用于指示已激活的多个小区中的一个小区对应的TCI状态。
也就是说，若第一网络设备确定的切换信令为DCI，而在发送DCI之前，第一网络设备已为终端激活了多个小区对应的TCI状态，通过发送的DCI来指示已激活的多个小区中的一个小区对应的TCI状态，进而说明该TCI状态对应的小区为目标小区。
可选地，已激活的多个小区对应的TCI状态由MAC CE激活。也就是说，第一网络设备需要先向终端发送MAC CE，通过该MAC CE激活多个小区的TCI状态，进而再通过DCI来指示已激活的多个小区中的一个小区的TCI状态。
需要说明的是，本申请实施例中第一网络设备和第二网络设备由不同的DU管理，则第一网络设备可以直接发送上述切换信令指示的TCI状态进行小区切 换。而在另一些实施例中，第一网络设备和第二网络设备还存在应用于intra-DU的情况，也就是第一网络设备和第二网络设备对应的小区均由同一个DU管理。在此情况下，第一网络设备和第二网络设备不仅需要考虑切换信令指示的TCI状态，还需要考虑类型指示符。
在一些实施例中，该切换信令还包括类型指示符，该类型指示符用于指示是否进行小区切换。
在本申请实施例中，由于第一网络设备已激活了多个TCI状态，因此对于每个TCI状态，还指示每个TCI状态的切换类型对应的类型指示符，以便于通过DCI来指示多个小区中一个小区的TCI状态时，基于TCI状态对应的目标小区以及类型指示符确定是否切换至目标小区。
例如，该类型指示符包括1比特。在该类型指示符为0的情况下，终端根据TCI状态对应的目标小区以及该类型指示符，确定不切换至目标小区。在该类型指示符为1的情况下，终端根据TCI状态对应的目标小区以及该类型指示符，确定切换至目标小区。
需要说明的是，本申请实施例是以通过指示TCI状态的方式来指示目标小区为例进行说明。而在另一实施例中，该切换信令还包括切换指示域，该切换指示域指示目标小区。
在本申请实施例中，第一网络设备直接在切换信令中设置切换指示域，通过该切换指示域直接指示目标小区。
在一些实施例中，该切换指示域用于指示目标小区的标识。例如，该目标小区的标识为目标小区的ID。
在一些实施例中，该切换指示域包括预设数量的比特，该预设数量的比特的数值不同，指示不同目标小区。
该预设数量由网络设备设置，或者由通信协议约定，或者采用其他方式设置，本申请实施例不作限定。例如，该预设数量为2、3、4或者其他数值。
例如，若该预设数量为2，则第一网络设备通过2比特的切换指示域来指示4个不同的目标小区。若该切换指示域为00，则指示目标小区1，或者，若该切换指示域为01，则指示目标小区2，或者，若该切换指示域为10，则指示目标小区3，或者，若该切换指示域为11，则指示目标小区4。
本申请实施例提供的方案中，第一网络设备可以采用多种形式的切换信令来指示终端切换至目标小区，扩展了第一网络设备发送切换信令的方式，提高 了切换信令的多样性。
图8示出了本申请一个示例性实施例提供的切换方法的流程图，示例性的可以应用于如图1所示的第二网络设备中，该方法包括以下内容中的至少部分内容：
步骤801：第二网络设备响应于终端的随机接入方式，确认终端接入该第二网络设备的目标小区。
在本申请实施例中，终端会基于随机接入方式接入第二网络设备的目标小区，则第二网络设备在确定终端通过随机接入方式进行接入后，即可确认终端接入第二网络设备的目标小区。
需要说明的是，本申请实施例是以第二网络设备响应于随机接入方式确认终端接入目标小区为例进行说明。而在另一实施例中，第二网络设备接收该终端发送的接入确认信息，确认该终端接入该目标小区。
图9示出了本申请一个示例性实施例提供的一种切换装置的框图，参见图9，该装置包括：
接收模块901，用于接收第一网络设备发送的切换信令，所述切换信令由所述第一网络设备在确定波束测量结果满足切换条件的情况下确定，所述波束测量结果由所述终端对至少一个候选小区测量确定；
切换模块902，用于响应于所述切换信令，切换至所述切换信令指示的目标小区。
在一些实施例中，所述切换信令为媒体访问控制控制单元MAC CE，或者，所述切换信令为下行控制信息DCI。
在一些实施例中，在所述切换信令为所述MAC CE的情况下，所述MAC CE用于激活一个小区的传输指示配置TCI状态。
在一些实施例中，在所述切换信令为所述DCI的情况下，所述DCI指示已激活的多个小区中的一个小区对应的TCI状态。
在一些实施例中，所述已激活的多个小区对应的TCI状态由MAC CE激活。
在一些实施例中，所述切换信令还包括类型指示符。
在一些实施例中，所述切换信令包括切换指示域，所述切换指示域指示所述目标小区。
在一些实施例中，所述接收模块901，还用于接收第一网络设备发送的配置信令，所述配置信令用于为所述终端配置所述至少一个候选小区。
在一些实施例中，所述配置信令包括以下至少一项：
所述候选小区的TCI状态；
用于进行随机接入的资源；
用于向所述目标小区发送接入确认信息的资源。
在一些实施例中，所述配置信令为无线资源控制RRC信令。
在一些实施例中，参见图10，所述装置还包括：
测量模块903，用于对所述至少一个候选小区进行波束测量，得到所述至少一个候选小区的波束测量结果；
上报模块904，用于上报至少一个所述波束测量结果。
在一些实施例中，所述切换模块902，还用于响应于所述切换信令，通过随机接入方式接入到所述切换信令指示的所述目标小区。
在一些实施例中，所述切换模块902，还用于在已获取TA的情况下，响应于所述切换信令，基于已配置资源向所述目标小区对应的第二网络设备发送接入确认信息，切换至所述切换信令指示的所述目标小区。
需要说明的是，上述实施例提供的装置，在实现其功能时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的装置与方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
图11示出了本申请一个示例性实施例提供的一种切换装置的框图，参见图11，该装置包括：
确定模块1101，用于在确定波束测量结果满足切换条件的情况下确定切换信令；
发送模块1102，用于向终端发送所述切换信令，所述波束测量结果由所述终端对至少一个候选小区测量确定，所述切换信令指示所述终端切换至所述切换信令指示的目标小区。
在一些实施例中，所述切换信令为MAC CE，或者，所述切换信令为DCI。
在一些实施例中，在所述切换信令为所述MAC CE的情况下，所述MAC CE 用于激活一个小区的传输指示配置TCI状态。
在一些实施例中，在所述切换信令为所述DCI的情况下，所述DCI指示已激活的多个小区中的一个小区对应的TCI状态。
在一些实施例中，所述已激活的多个小区对应的TCI状态由MAC CE激活。
在一些实施例中，所述切换信令还包括类型指示符。
在一些实施例中，所述切换信令包括切换指示域，所述切换指示域指示所述目标小区。
在一些实施例中，所述发送模块1102，还用于向所述终端发送配置信令，所述配置信令用于为所述终端配置所述至少一个候选小区。
在一些实施例中，所述配置信令包括以下至少一项：
所述候选小区的TCI状态；
用于进行随机接入的资源；
用于向所述目标小区发送接入确认信息的资源。
在一些实施例中，所述配置信令为RRC信令。
在一些实施例中，所述发送模块1102，还用于接收所述终端发送的至少一个波束测量结果，所述波束测量结果由所述终端对所述至少一个候选小区进行波束测量得到。
在一些实施例中，所述发送模块1102，还用于向中央单元CU发送响应信息，所述响应信息指示所述终端进行小区切换以及所述目标小区。
在一些实施例中，所述装置还包括：
确认模块1101，还用于响应于所述终端的随机接入方式，确认所述终端接入所述目标小区。
在一些实施例中，所述装置还包括：
确认模块1101，还用于接收所述终端发送的接入确认信息，确认所述终端接入所述目标小区，所述接入确认信息由所述终端在已获取TA的情况下，响应于所述切换信令，基于已配置资源发送。
在一些实施例中，所述装置还包括：
所述确定模块1101，还用于根据小区测量结果，确定所述至少一个候选小区；
所述小区测量结果与所述波束测量结果为不同层的测量结果。
需要说明的是，上述实施例提供的装置，在实现其功能时，仅以上述各功 能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的装置与方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
图12示出了本申请一个示例性实施例提供的一种切换装置的框图，参见图12，该装置包括：
确认模块1201，用于响应于终端的随机接入方式，确认所述终端接入第二网络设备的目标小区。
在一些实施例中，确认模块1201，还用于接收所述终端发送的接入确认信息，确认所述终端接入所述目标小区，所述接入确认信息由所述终端在已获取TA的情况下，响应于所述切换信令，基于已配置资源发送。
需要说明的是，上述实施例提供的装置，在实现其功能时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的装置与方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
图13示出了本申请一个示例性实施例提供的通信设备的结构示意图，该通信设备包括：处理器1301、接收器1302、发射器1303、存储器1304和总线1305。
处理器1301包括一个或者一个以上处理核心，处理器1301通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器1302和发射器1303可以实现为一个通信组件，该通信组件可以是一块通信芯片。
存储器1304通过总线1305与处理器1301相连。
存储器1304可用于存储至少一个程序代码，处理器1301用于执行该至少一个程序代码，以实现上述方法实施例中的各个步骤。
此外，通信设备可以为终端或网络设备。存储器1304可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：磁盘或光盘，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，静态随时存取存储器(SRAM)，只读存储器 (ROM)，磁存储器，快闪存储器，可编程只读存储器(PROM)。
在示例性实施例中，还提供了一种计算机可读存储介质，所述可读存储介质中存储有可执行程序代码，所述可执行程序代码由处理器加载并执行以实现上述各个方法实施例提供的由通信设备执行的切换方法。
在示例性实施例中，提供了一种芯片，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片在终端或网络设备上运行时，用于实现如各个方法实施例提供的切换方法。
在示例性实施例中，提供了计算机程序产品，当所述计算机程序产品被终端或网络设备的处理器执行时，其用于实现上述各个方法实施例提供的切换方法。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (34)

  1. 一种切换方法，其特征在于，所述方法由终端执行，所述方法包括：
    接收第一网络设备发送的切换信令，所述切换信令由所述第一网络设备在确定波束测量结果满足切换条件的情况下确定，所述波束测量结果由所述终端对至少一个候选小区测量确定；
    响应于所述切换信令，切换至所述切换信令指示的目标小区。
  2. 根据权利要求1所述的方法，其特征在于，所述切换信令为媒体访问控制控制单元MAC CE，或者，所述切换信令为下行控制信息DCI。
  3. 根据权利要求2所述的方法，其特征在于，在所述切换信令为所述MAC CE的情况下，所述MAC CE用于激活一个小区的传输指示配置TCI状态。
  4. 根据权利要求2所述的方法，其特征在于，在所述切换信令为所述DCI的情况下，所述DCI指示已激活的多个小区中的一个小区对应的TCI状态。
  5. 根据权利要求4所述的方法，其特征在于，所述已激活的多个小区对应的TCI状态由MAC CE激活。
  6. 根据权利要求4所述的方法，其特征在于，所述切换信令还包括类型指示符。
  7. 根据权利要求2所述的方法，其特征在于，所述切换信令包括切换指示域，所述切换指示域指示所述目标小区。
  8. 根据权利要求1至7任一所述的方法，其特征在于，所述方法还包括：
    接收所述第一网络设备发送的配置信令，所述配置信令用于为所述终端配置所述至少一个候选小区。
  9. 根据权利要求8所述的方法，其特征在于，所述配置信令包括以下至少一 项：
    所述候选小区的TCI状态；
    用于进行随机接入的资源；
    用于向所述目标小区发送接入确认信息的资源。
  10. 根据权利要求8所述的方法，其特征在于，所述配置信令为无线资源控制RRC信令。
  11. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    对所述至少一个候选小区进行波束测量，得到所述至少一个候选小区的波束测量结果；
    上报至少一个所述波束测量结果。
  12. 根据权利要求1所述的方法，其特征在于，所述响应于所述切换信令，切换至所述切换信令指示的目标小区，包括：
    响应于所述切换信令，通过随机接入方式接入到所述切换信令指示的所述目标小区。
  13. 根据权利要求1所述的方法，其特征在于，所述响应于所述切换信令，切换至所述切换信令指示的目标小区，包括：
    在已获取定时提前TA的情况下，响应于所述切换信令，基于已配置资源向所述目标小区对应的第二网络设备发送接入确认信息，切换至所述切换信令指示的所述目标小区。
  14. 一种切换方法，其特征在于，所述方法由第一网络设备执行，所述方法包括：
    在确定波束测量结果满足切换条件的情况下确定切换信令；
    向终端发送所述切换信令，所述波束测量结果由所述终端对至少一个候选小区测量确定，所述切换信令指示所述终端切换至所述切换信令指示的目标小区。
  15. 根据权利要求14所述的方法，其特征在于，所述切换信令为MAC CE，或者，所述切换信令为DCI。
  16. 根据权利要求15所述的方法，其特征在于，在所述切换信令为所述MAC CE的情况下，所述MAC CE用于激活一个小区的传输指示配置TCI状态。
  17. 根据权利要求15所述的方法，其特征在于，在所述切换信令为所述DCI的情况下，所述DCI指示已激活的多个小区中的一个小区对应的TCI状态。
  18. 根据权利要求17所述的方法，其特征在于，所述已激活的多个小区对应的TCI状态由MAC CE激活。
  19. 根据权利要求17所述的方法，其特征在于，所述切换信令还包括类型指示符。
  20. 根据权利要求15所述的方法，其特征在于，所述切换信令包括切换指示域，所述切换指示域指示所述目标小区。
  21. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    向所述终端发送配置信令，所述配置信令用于为所述终端配置所述至少一个候选小区。
  22. 根据权利要求21所述的方法，其特征在于，所述配置信令包括以下至少一项：
    所述候选小区的TCI状态；
    用于进行随机接入的资源；
    用于向所述目标小区发送接入确认信息的资源。
  23. 根据权利要求21所述的方法，其特征在于，所述配置信令为RRC信令。
  24. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    接收所述终端发送的至少一个波束测量结果，所述波束测量结果由所述终端对所述至少一个候选小区进行波束测量得到。
  25. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    向中央单元CU发送响应信息，所述响应信息指示所述终端进行小区切换以及所述目标小区。
  26. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    根据小区测量结果，确定所述至少一个候选小区；
    所述小区测量结果与所述波束测量结果为不同层的测量结果。
  27. 一种切换方法，其特征在于，所述方法应用于第二网络设备，所述方法包括：
    响应于终端的随机接入方式，确认所述终端接入所述第二网络设备的目标小区。
  28. 根据权利要求27所述的方法，其特征在于，所述方法还包括：
    接收所述终端发送的接入确认信息，确认所述终端接入所述目标小区，所述接入确认信息由所述终端在已获取TA的情况下，响应于所述切换信令，基于已配置资源发送。
  29. 一种切换装置，其特征在于，所述装置包括：
    接收模块，用于接收第一网络设备发送的切换信令，所述切换信令由所述第一网络设备在确定波束测量结果满足切换条件的情况下确定，所述波束测量结果由所述终端对至少一个候选小区测量确定；
    切换模块，用于响应于所述切换信令，切换至所述切换信令指示的目标小区。
  30. 一种切换装置，其特征在于，所述装置包括：
    确定模块，用于在确定波束测量结果满足切换条件的情况下确定切换信令；
    发送模块，用于向终端发送所述切换信令，所述波束测量结果由所述终端对至少一个候选小区测量确定，所述切换信令指示所述终端切换至所述切换信令指示的目标小区。
  31. 一种切换装置，其特征在于，所述装置包括：
    确认模块，用于响应于终端的随机接入方式，确认所述终端接入第二网络设备的目标小区。
  32. 一种终端，其特征在于，所述终端包括：
    处理器；
    与所述处理器相连的收发器；
    其中，所述处理器被配置为加载并执行可执行指令以实现如权利要求1至13任一所述的切换方法。
  33. 一种网络设备，其特征在于，所述网络设备包括：
    处理器；
    与所述处理器相连的收发器；
    其中，所述处理器被配置为加载并执行可执行指令以实现如权利要求14至28任一所述的切换方法。
  34. 一种计算机可读存储介质，所述可读存储介质中存储有可执行程序代码，所述可执行程序代码由处理器加载并执行以实现如权利要求1至28任一所述的切换方法。
PCT/CN2022/106879 2022-07-20 2022-07-20 切换方法、装置、设备及存储介质 WO2024016236A1 (zh)

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