Transmission control method and apparatus, terminal and network-side device

Abstract

The application discloses a transmission control method and device, a terminal and a network side equipment, and belongs to the technical field of wireless communication. The transmission control method of the application embodiment comprises the following steps: a terminal receives a switching command, wherein the switching command is used for instructing the terminal to switch from a source cell to a target cell; and the terminal performs signal transmission in the target cell by using transmission control information of the terminal in the source cell.

Description

Technical Field

[0001] This application belongs to the field of wireless communication technology, specifically relating to a transmission control method, apparatus, terminal, and network-side equipment. Background Technology

[0002] In the cell handover mechanism of related technologies, after the terminal hands over to the target cell, it needs to perform measurements and configuration in the target cell to obtain ideal transmission control information. Before obtaining the ideal transmission control information, the terminal uses agreed or default transmission control information for data transmission. However, the agreed or default transmission control information used by the terminal may differ significantly from the ideal transmission control information, which may lead to poor signal transmission quality or significant interference in the target cell. Summary of the Invention

[0003] This application provides a transmission control method, apparatus, terminal, and network-side device, which can solve the problem that the transmission control information used by the terminal during the initial time period of handover to the target cell differs significantly from the ideal transmission control information.

[0004] In a first aspect, a transmission control method is provided, comprising: a terminal receiving a handover command, wherein the handover command is used to instruct the terminal to handover from a source cell to a target cell; and the terminal using transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0005] Secondly, a handover method is provided, comprising: a target base station receiving a handover request sent by a source base station, wherein the handover request is used to request a terminal to be handed over from a source cell to a target cell; the target base station sending a handover request response message to the source base station, wherein the handover request response message includes a handover command sent to the terminal, the handover command being used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0006] Thirdly, a handover method is provided, comprising: a source base station receiving measurement results from a terminal regarding a target cell; the source base station sending a handover request to a target base station corresponding to the target cell, wherein the handover request is used to request the terminal to be handed over from the source cell to the target cell, and the handover request carries at least one of the following: information of the terminal's source cell, and transmission control information of the terminal in the source cell; the source base station receiving a handover request response message sent by the target base station, wherein the handover request response message includes a handover command sent to the terminal, and the handover command is used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell; and the source base station sending the handover command to the terminal.

[0007] Fourthly, a transmission control device is provided, comprising: a receiving module for receiving a handover command, wherein the handover command is used to instruct a terminal to handover from a source cell to a target cell; and a processing module for using the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0008] Fifthly, a handover apparatus is provided, comprising: a receiving module for receiving a handover request sent by a source base station, wherein the handover request is used to request a terminal to be handed over from a source cell to a target cell; and a sending module for sending a handover request response message to the source base station, wherein the handover request response message includes a handover command sent to the terminal, the handover command being used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, or configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0009] A sixth aspect provides a handover apparatus, comprising: a receiving module for receiving measurement results from a terminal regarding a target cell; a sending module for sending a handover request to a target base station corresponding to the target cell, wherein the handover request requests the terminal to be switched from a source cell to the target cell, and the handover request carries at least one of the following: information of the source cell of the terminal, and transmission control information of the terminal in the source cell; the receiving module is further configured to receive a handover request response message sent by the target base station, wherein the handover request response message includes a handover command sent to the terminal, and the handover command is used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell; and the sending module is further configured to send the handover command to the terminal.

[0010] In a seventh aspect, a communication device is provided, the device being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect, or to implement the steps of the method described in the second aspect.

[0011] In an eighth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0012] A ninth aspect provides a terminal including a processor and a communication interface, wherein the processor is configured to perform the steps of the method described in the first aspect, and the communication interface is configured to be coupled to the processor.

[0013] In a tenth aspect, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect, or implementing the steps of the method as described in the third aspect.

[0014] Eleventhly, a network-side device is provided, including a processor and a communication interface, wherein the processor is configured to perform the steps of the method described in the second aspect, or to perform the steps of the method described in the third aspect, and the communication interface is configured to be coupled to the processor.

[0015] In a twelfth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0016] In a thirteenth aspect, a wireless communication system is provided, comprising: a terminal, a first network-side device, and a second network-side device, wherein the terminal is configured to perform the steps of the method described in the first aspect, the first network-side device is configured to perform the steps of the method described in the second aspect, and the second network-side device is configured to perform the steps of the method described in the third aspect.

[0017] In a fourteenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method as described in the first aspect, or the steps of the method as described in the second aspect, or the steps of the method as described in the third aspect.

[0018] In a fifteenth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to implement the steps of the method as described in the first aspect, or the steps of the method as described in the second aspect, or the steps of the method as described in the third aspect.

[0019] In this embodiment, after receiving a handover command from the source cell to the target cell, the terminal uses its transmission control information in the source cell to perform signal transmission in the target cell. Since the transceiver nodes corresponding to the source cell and the target cell are generally not far apart, and in some cases may even correspond to the same transceiver nodes (e.g., when the source cell is a 5G cell and the target cell is a 6G cell), the transceiver nodes may share radio frequency components. Therefore, the transmission environment of the terminal in the target cell and the source cell may not change drastically, and the ideal transmission control information of the terminal in the source cell is relatively similar to that in the target cell. Therefore, during the initial handover period to the target cell, using the transmission control information from the source cell to perform signal transmission in the target cell can improve the signal transmission quality or reduce interference in the target cell. Attached Figure Description

[0020] Figure 1 A block diagram of a wireless communication system applicable to embodiments of this application is shown; Figure 2a This illustrates a flowchart of a cell resource coordination process between a source cell and a target cell in a related technology. Figure 2b This illustrates another flowchart of cell resource coordination between a source cell and a target cell in related technologies; Figure 3 This diagram illustrates an example of a network structure for spectrum sharing between 5G and 6G cells. Figure 4 A flowchart of a transmission control method provided in an embodiment of this application is shown; Figure 5 Another flowchart of the transmission control method provided in an embodiment of this application is shown; Figure 6 A flowchart of yet another transmission control method provided in an embodiment of this application is shown; Figure 7 A flowchart of yet another transmission control method provided in an embodiment of this application is shown; Figure 8 A flowchart of a switching method provided in an embodiment of this application is shown; Figure 9A flowchart of another switching method provided in an embodiment of this application is shown; Figure 10 A schematic diagram of a UE handover process in an exemplary embodiment of this application is shown; Figure 11 This paper shows a schematic diagram of the structure of a transmission control device provided in an embodiment of this application; Figure 12 This illustration shows a schematic diagram of a switching device provided in an embodiment of this application; Figure 13 A structural diagram of another switching device provided in an embodiment of this application is shown; Figure 14 This paper shows a schematic diagram of the structure of a communication device provided in an embodiment of this application; Figure 15 This illustration shows a hardware structure diagram of a terminal provided in an embodiment of this application; Figure 16 This diagram illustrates the hardware structure of a network-side device according to an embodiment of this application. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0022] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0023] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0024] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0025] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0026] In related technologies, in order to support the smooth evolution from 4G to 5G and enable 5G base stations to use the high-quality low-frequency carriers occupied by 4G base stations in the initial stage of 5G deployment, 3GPP introduced spectrum sharing technology between 4G base stations and 5G base stations. This technology includes resource coordination between 4G base stations and 5G base stations and UE rate matching configuration of 5G base stations based on the resource coordination results with 4G base stations.

[0027] Both 4G base stations (ng-eNB) and 5G base stations (gNB) can initiate cell resource coordination procedures based on their respective time-frequency resource requirements, such as... Figure 2a and 2b As shown, the process includes: Step 1: The source base station (5G base station or 4G base station) initiates a cell resource coordination request to the peer base station (4G base station or 5G base station). In the cell resource coordination request sent to the peer base station, the source base station indicates the time and frequency resource requirement parameters of its own cell, including periodic time and frequency resource indication and time and frequency resource indication within a time window. The time and frequency resource indication includes indicating whether the cell uses or does not use a time and frequency resource unit, whether it is used for uplink transmission or downlink transmission, etc. Step 2: The other base station receives the cell resource coordination request from the source base station, determines its own time and frequency resource usage requirements, and generates a cell resource coordination response message based on its own time and frequency resource usage requirements and the time and frequency resource indication in the received cell resource coordination request from the source base station. The cell resource coordination response message includes the time and frequency resource indication of the other base station's cell. The cell resource indication includes a periodic time and frequency resource indication and a time and frequency resource indication within a time window. The time and frequency resource indication includes instructions on whether the other base station's cell uses or does not use a time and frequency resource unit, whether it is used for uplink transmission or downlink transmission, etc.

[0028] After the 5G base station completes the cell resource coordination process with the 4G base station, it provides rate matching configuration for the corresponding UE of the 5G base station cell based on the cell time-frequency resource indication information received from the 4G base station. For example: 1) In order to circumvent the rate matching configuration of the Cell-Specific Reference Signal (CRS) of 4G base station cells; 2) A rate-matching configuration to circumvent the physical downlink control channel (PDCCH) search space of 4G cells.

[0029] 5G base stations can provide static rate matching configurations to the UE via Radio Resource Control (RRC) signaling, or they can provide pre-configurations for rate matching to the UE via RRC signaling. Then, they can instruct the UE via Downlink Control Information (DCI) whether to perform the corresponding rate matching based on the pre-configuration. Based on the current New Radio (NR) protocol, DCI can provide dynamic rate indications for two rate match pattern groups.

[0030] For the UE, when performing downlink data transmission, it receives PDSCH and performs related data transmission and reception processes according to the effective static rate matching configuration and dynamic rate matching configuration. That is, the UE determines the time and frequency resources that need to be reserved when performing data transmission and reception based on the received rate matching configuration, and performs data transmission and reception on the remaining time and frequency resources.

[0031] The evolution from 5G to 6G is similar to that from 4G to 5G. Currently, the large-scale deployment of 5G base stations has already occupied most of the low-frequency carrier resources. To ensure 6G cell coverage in the initial stage of 6G deployment, it is necessary to share frequency resources between 5G cells while ensuring 5G cell coverage. 5G and 6G cells negotiate time-frequency resources between their base stations, allocating the time-frequency resources of the same carrier between them using time-division or frequency-division multiplexing. Each 5G and 6G cell then executes its own data transmission and reception scheduling according to its allocated time-frequency resources. Considering that the carrier bandwidth of 6G is generally larger than that of 5G cells, a 6G cell can share spectrum with one or more 5G cells.

[0032] To save costs in the initial stages of 6G deployment, one feasible approach is to share radio frequency components between 5G and 6G cells, including remote radio units (RRUs) / active antenna units (AAUs) and antennas. Figure 3 This diagram illustrates an exemplary network architecture for spectrum sharing between 5G and 6G cells in related technologies. Figure 3 As shown, 5G and 6G cells use the same carrier, the same AAU, and the same antenna panel, and provide 5G and 6G cell services through spectrum sharing.

[0033] In addition, in related technologies, to control interference caused by uplink signal transmission and the signal strength / quality of the UE's transmitted signal reaching the base station receiver, the UE performs uplink power control according to the base station configuration and its own measurement results of the base station. This includes power control of uplink transmissions such as the Physical Random Access Channel (PRACH), Wake Up Signal (WUS), Sounding Reference Signal (SRS), Physical Uplink Control Channel (PUCCH), and Physical Uplink Shared Channel (PUSCH). The following is a brief introduction to uplink power control based on relevant technologies, to facilitate the subsequent description of the problems and solutions in this application. Due to space limitations, only a portion of the description is extracted, and other descriptions are omitted.

[0034] The UE can determine the PUSCH transmission power using the following formula:

[0035] in, The target received power density of PUSCH It is based on propagation path loss by UE Calculate the scaling factor for PUSCH transmit power. It is the number of PRBs occupied by PUSCH. This is the UE's maximum transmit power; It is the propagation path loss obtained by the UE based on the downlink pilot measurement of the serving cell. It refers to the power adjustment amount corresponding to the uplink data transmission format (e.g., MCS). This is the cumulative transmit power adjustment calculated by the UE based on the received power control command. For details on the calculation method, please refer to TS 213 V18.4.0, for example. It is the numerology factor, when Sub-carrier-spacing = 15 or 30 kHz. These correspond to 0 or 1 respectively. The cumulative transmit power adjustment includes the cumulative amount of Transmission Power Control (TPC) commands.

[0036] The UE can determine the PUCCH transmit power using the following formula: [dBm], in, This is the target received power density of PUCCH. It is the number of PRBs occupied by PUCCH. This is the UE's maximum transmit power; It is the propagation path loss obtained by the UE based on the downlink pilot measurement of the serving cell. This is the power adjustment amount corresponding to the PUCCH format. It refers to the transmit power adjustment amount related to the PUCCH format in the PUCCH transmitted in the main cell. This is the cumulative transmit power adjustment calculated by the UE based on the received power control command. For details on the calculation method, please refer to TS 213 V18.4.0, for example. It is the numerology factor, when Sub-carrier-spacing = 15 or 30 kHz. They correspond to 0 or 1 respectively.

[0037] The UE can determine the SRS transmit power using the following formula: [dBm], Among them, P O_SRS,b,f,c It is the SRS target received power density. It is the frequency bandwidth occupied by SRS. It is the scaling factor by which the UE calculates the SRS transmit power based on propagation path loss. This is the cumulative adjustment of the SRS transmission power. For specific calculation methods, please refer to TS 213 V18.4.0 for example.

[0038] The UE can determine the PRACH transmit power using the following formula: [dBm], in, This refers to the target received power density of PRACH. If the UE does not receive a Random Access Response (RACH) message from the base station after sending PRACH, the UE will increase the PRACH transmission power during the next PRACH transmission until the PRACH transmission power reaches the maximum UE transmission power. This mechanism is designed to overcome the situation where the initial PRACH power determined by the UE is too low due to various measurement errors, causing the base station to be unable to detect the PRACH sent by the UE, thus preventing the UE from accessing the network.

[0039] NR supports multiple power control loops (also known as power control adjustment states), and base stations can use the power control adjustment state index. l Configure the UE to perform PUSCH / PUCCH / SRS transmit power control based on the specified power control loop.

[0040] In addition, the wake-up signal (WUS) used by the UE to wake up the base station can also be based on the measurement results of the corresponding downlink pilot signal. For example, the UE measures the downlink propagation path loss based on the downlink pilot corresponding to the WUS, and then calculates the power to transmit the WUS signal based on the downlink propagation path loss and the target power of the base station receiving the WUS signal.

[0041] According to the cell handover mechanism in related technologies, after handover to the target cell, the terminal needs to perform measurements and configuration in the target cell to obtain ideal transmission control information. Before obtaining the ideal transmission control information, the terminal uses agreed-upon or default transmission control information for data transmission. However, the agreed-upon or default transmission control information used by the terminal may differ significantly from the ideal transmission control information, which may lead to poor signal transmission quality or significant interference in the target cell.

[0042] For example, during cell handover reconfiguration, the UE will release the power control parameters and power control state parameters in the source cell (such as those mentioned above). , and When the UE performs uplink power control in the target cell, it needs to go through the convergence process of obtaining the power control state parameters again from the initial state. During the period before the power control state parameters converge to near the optimal adjustment value, there may be a significant deviation between the UE's uplink transmission power and the ideal transmission power. This may result in a significant deviation between the strength / quality of the signal transmitted by the UE reaching the base station receiver and the target strength / quality, or the UE's transmission power being too high, causing strong interference to neighboring cells.

[0043] For example, after a handover, in order to obtain information such as the beam, timing, frequency offset, or Doppler of the serving UE, measurements and configurations need to be re-performed. Before the UE and base station re-measure, the UE reports, and the base station completes the relevant configurations for the UE based on these measurements and reports, the UE and base station need to use suboptimal beams or uplink timing or frequency compensation, which may reduce the data transmission quality.

[0044] To address the aforementioned technical problems, this application provides a transmission control scheme to at least solve one of the aforementioned technical problems.

[0045] The transmission control scheme provided in this application will be described in detail below with reference to the accompanying drawings, through some embodiments and application scenarios.

[0046] Figure 4 This diagram illustrates a flow chart of a transmission control method provided in an embodiment of this application. This method 400 can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal. Figure 4 As shown, the method may include the following steps.

[0047] S410, the terminal receives a handover command, wherein the handover command is used to instruct the terminal to hand over from the source cell to the target cell.

[0048] In this embodiment, the terminal that establishes a wireless connection with the source cell can obtain measurement results about the target cell according to the target cell measurement and reporting configuration received from the source base station, and report the measurement results to the current serving cell (i.e., the source cell). After receiving the measurement results about the target cell from the terminal, the source base station determines to initiate the handover process for the terminal and sends a handover request about the terminal to the target cell. After receiving the handover request about the terminal sent by the source base station, the target base station can send a handover request response message to the source base station. The handover request response message carries the aforementioned handover command. After receiving the handover request response message, the source base station sends the handover command to the terminal, instructing the terminal to hand over from the source cell to the target cell.

[0049] S420, the terminal uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0050] After receiving a handover command, the terminal can switch from the source cell to the target cell. During the initial time period after switching to the target cell, the terminal can use the transmission control information in the source cell to perform signal transmission in the target cell.

[0051] In some embodiments, the transmission control information described above may include at least one of the following: 1) Power control information.

[0052] In these embodiments, after handover, the terminal uses the power control information in the source cell as the initial value of the uplink power control state parameter, thereby accelerating the convergence of the uplink power control state parameter in the target cell, improving the transmission quality of the uplink signal, and reducing interference from neighboring cells.

[0053] In some embodiments, the power control information may include at least one of the following: a) Transmit power control parameters for the PUSCH. Optionally, the transmit power control parameters for the PUSCH may include at least one of the following: - An identifier for one or more power control adjustment states used for PUSCH power control; - Parameters used to determine the target received power density of PUSCH; - Calculate the proportional factor for PUSCH transmission power based on propagation path loss; - Nominal power; - The nominal power of the PUSCH with authorized scheduling; - Nominal power of unauthorized PUSCH scheduling; - Target received power of the preamble; - Power offset value, which can be positive or negative; - Power ramping parameters, including power ramp step size, power ramp counter, maximum number of power ramps, etc. -Maximum transmit power; - Power offset of message 3 (Msg3) PUSCH and PRACH / WUS preamble; - Power offset of message A (MsgA) PUSCH and PRACH / WUS preamble; - Accumulated value of transmit power control (TPC); -TPC; - Full-power transmission mode configuration information; -Power rating; -Power level offset; -Power rollback; -Road loss estimation reference signal.

[0054] Through this embodiment, the terminal can use the transmit power control parameters of the PUSCH in the source cell to control the power of the PUSCH transmitted in the target cell, thereby accelerating the convergence of the power control status parameters of the PUSCH in the target cell, improving the transmission quality of the PUSCH, and reducing the interference of the transmitted PUSCH to neighboring cells.

[0055] b) PUCCH transmit power control parameters. Optionally, the PUCCH transmit power control parameters include at least one of the following: - An identifier for one or more power control adjustment states used for PUCCH power control; - Parameters used to determine the target receive power density of PUCCH; -Nominal power; -Target received power of the preamble; - Power offset value, which can be positive or negative; - Power ramping parameters include at least one of the following: power ramp step size, power ramp counter, and maximum number of power ramps; -Maximum transmit power; -TPC accumulated value; -TPC; - Full-power transmission mode configuration information; -Power rating; -Power level offset; -Power rollback; - Calculate the proportional factor for PUCCH transmission power based on propagation path loss; -Road loss estimation reference signal.

[0056] Through this embodiment, the terminal can use the transmit power control parameters of the PUCCH in the source cell to control the power of the PUCCH transmitted in the target cell, thereby accelerating the convergence of the power control status parameters of the PUCCH in the target cell, improving the transmission quality of the PUCCH, and reducing the interference of the transmitted PUCCH to neighboring cells.

[0057] c) SRS transmit power control parameters. Optional, including at least one of the following: - Identifiers for one or more power control adjustment states used for SRS power control; - Parameters used to determine the target received power density of SRS; - A scaling factor for calculating SRS transmission power based on propagation path loss; -Nominal power, such as the P0 power configuration of SRS; - Power offset value, which can be positive or negative; - Power ramping parameters include at least one of the following: power ramp step size, power ramp counter, and maximum number of power ramps; -Maximum transmit power; -TPC accumulated value; -TPC; - Full-power transmission mode configuration information; -Power rating; Power level offset; -Power rollback.

[0058] Through this embodiment, the terminal can use the transmit power control parameters of the SRS in the source cell to control the power of the SRS transmitted in the target cell, thereby accelerating the convergence of the power control status parameters of the terminal's SRS in the target cell, improving the transmission quality of the SRS, and reducing the interference of the transmitted SRS to neighboring cells.

[0059] d) Parameters related to PRACH or uplink WUS transmit power. Optionally, parameters related to PRACH or uplink WUS transmit power may include at least one of the following: -Target received power; - Power offset value, which can be positive or negative; - Power ramping parameters include at least one of the following: power ramp step size, power ramp counter, and maximum number of power ramps; -Maximum transmit power; - Full-power transmission mode configuration information; -Power rating; -Power level offset; -Power rollback; - Calculate the proportional factor for PUCCH transmission power based on propagation path loss; -Road loss estimation reference signal.

[0060] Through this embodiment, the terminal can use the transmit power-related parameters of the PRACH or uplink WUS in the source cell to perform power control on the PRACH or uplink WUS transmitted in the target cell. This can accelerate the convergence of the power control status parameters of the terminal in the PRACH or uplink WUS in the target cell, improve the transmission quality of the PRACH or uplink WUS, and reduce the interference of the transmitted PRACH or uplink WUS to neighboring cells.

[0061] e) Path loss estimation signal. For example, CSI Reference Signal (CSI-RS) or Synchronization Signal Block (SSB).

[0062] 2) Uplink signal transmission beam.

[0063] For example, the uplink service beam of the terminal. In these embodiments, after handover, the terminal uses the transmission beam of the uplink signal in the source cell as the transmission beam of the uplink signal in the target cell. Since the wireless propagation environment of the source cell and the target cell is not much different, using the transmission beam of the uplink signal of the source cell as the uplink beam during the initial period of handover to the target cell can improve the transmission quality of uplink data of the terminal in the target cell.

[0064] 3) Downlink signal transmission beam.

[0065] For example, the downlink service beam of the terminal. In these embodiments, after handover, the terminal uses the transmission beam of the downlink signal in the source cell as the transmission beam of the downlink signal in the target cell. Since the wireless propagation environment of the source cell and the target cell is not much different, using the downlink signal transmission beam of the source cell as the downlink beam for the initial period of handover to the target cell can improve the transmission quality of downlink data of the terminal in the target cell.

[0066] 4) Timing of uplink signal transmission.

[0067] In these embodiments, after handover, the terminal uses the uplink signal transmission timing in the source cell as the uplink signal transmission timing in the target cell. Since the wireless propagation environment of the source cell and the target cell is not significantly different, using the uplink signal transmission timing of the source cell as the uplink signal transmission timing for the initial time period of handover to the target cell can improve the data transmission quality of the terminal in the target cell.

[0068] 5) The pre-compensation time required for signal transmission.

[0069] In these embodiments, after handover, the terminal uses the pre-compensation time required for signal transmission in the source cell as the pre-compensation time required for signal transmission in the target cell. Since the wireless propagation environment of the source cell and the target cell is not significantly different, using the pre-compensation time required for signal transmission in the source cell as the pre-compensation time required for signal transmission in the initial period of handover to the target cell can improve the data transmission quality of the terminal in the target cell.

[0070] 6) Frequency offset pre-compensation required for signal transmission.

[0071] In these embodiments, after handover, the terminal uses the pre-compensated frequency offset required for signal transmission in the source cell as the pre-compensated frequency offset required for signal transmission in the target cell. Since the wireless propagation environment of the source cell and the target cell is not significantly different, using the pre-compensated frequency offset required for signal transmission in the source cell as the pre-compensated frequency offset required for signal transmission in the initial time period of handover to the target cell can improve the data transmission quality of the terminal in the target cell.

[0072] 7) Channel State Information (CSI) required for signal transmission scheduling.

[0073] For example, the CSI measured in the source cell is reported to the target cell, and the target cell can schedule the terminal's signal transmission based on this CSI. In these embodiments, after handover, the terminal uses the CSI measured in the source cell as the CSI in the target cell for reporting. Since the radio propagation environment of the source cell and the target cell is not significantly different, using the CSI measured in the source cell as the target cell's CSI during the initial handover period can improve the terminal's data transmission quality in the target cell.

[0074] 8) Measure the CSI measurement signal.

[0075] In these embodiments, the terminal can use the measurement signal configured in the source cell for measuring CSI to measure the CSI of the target cell. Since the wireless propagation environment of the source cell and the target cell is not much different, using the measurement signal configured in the source cell for measuring CSI to measure the CSI of the target cell and using the measured CSI as the CSI of the target cell during the initial time period of handover to the target cell can improve the data transmission quality of the terminal in the target cell.

[0076] In some embodiments, the terminal uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell, including at least one of the following: 1) During the signal transmission process in the target cell, the terminal uses the power control information of the terminal in the source cell to perform uplink power control in the target cell; For example, the terminal uses the transmit power control parameters of the PUSCH in the source cell to perform uplink power control on the PUSCH transmitted in the target cell, or it uses the transmit power control parameters of the associated PUCCH in the source cell to perform uplink power control on the PUCCH transmitted in the target cell.

[0077] In these embodiments, after handover, the terminal uses the power control information in the source cell as the initial value of the uplink power control state parameter to perform uplink power control in the target cell. This can accelerate the convergence of the uplink power control state parameter in the target cell, improve the transmission quality of the uplink signal, and reduce interference from neighboring cells.

[0078] 2) The terminal uses at least one of the following in the source cell: uplink signal transmission timing, uplink signal transmission beam, downlink signal transmission beam, pre-compensated time offset, and pre-compensated frequency offset, to perform signal transmission in the target cell.

[0079] For example, the terminal uses the uplink signal transmission beam from the source cell to transmit uplink signals in the target cell. Alternatively, the terminal uses the uplink signal transmission timing from the source cell to transmit uplink signals in the target cell.

[0080] In these embodiments, after handover, the terminal uses at least one of the uplink signal transmission timing, uplink signal transmission beam, downlink signal transmission beam, pre-compensated time offset, and pre-compensated frequency offset in the source cell to perform signal transmission in the target cell. Since the wireless propagation environment of the source cell and the target cell is not significantly different, using at least one of the uplink signal transmission timing, uplink signal transmission beam, downlink signal transmission beam, pre-compensated time offset, and pre-compensated frequency offset in the source cell to perform signal transmission in the target cell can improve the data transmission quality of the terminal in the target cell.

[0081] 3) The terminal measures the measurement signal configured in the source cell, and obtains and reports the channel state information.

[0082] In these embodiments, the terminal can use the measurement signal configured in the source cell for measuring CSI to measure the CSI of the target cell and report the measured CSI. Since the wireless propagation environment of the source cell and the target cell is not much different, using the measurement signal configured in the source cell for measuring CSI to measure the CSI of the target cell and using the measured CSI as the CSI of the target cell during the initial time period of handover to the target cell can improve the data transmission quality of the terminal in the target cell.

[0083] 4) During the process of performing RRC reconfiguration based on the handover command, the terminal retains at least one transmission control information of the terminal in the source cell.

[0084] In these embodiments, during the process of performing RRC reconfiguration based on the handover command, the terminal retains at least one of the above-mentioned transmission control information in the source cell, thereby enabling the terminal to use at least one of the transmission control information in the source cell for signal transmission during the initial time period of handover to the target cell.

[0085] Through the technical solution provided in this application, during the initial time period of switching to the target cell, the terminal can use the transmission control information of the source cell to perform signal transmission in the target cell. Since the transceiver nodes corresponding to the source cell and the target cell are generally not far apart, and in some cases may even correspond to the same transceiver node (e.g., when the source cell is a 5G cell and the target cell is a 6G cell), in... Figure 3In the network architecture shown, the transceiver nodes corresponding to the source cell and the target cell may share radio frequency components. Therefore, the transmission environment of the terminal in the target cell and the source cell may not change drastically. The transmission control information of the terminal in the source cell is similar to the ideal transmission control information of the terminal in the target cell. Therefore, during the initial period of the terminal switching to the target cell, using the transmission control information of the terminal in the source cell to perform signal transmission in the target cell can improve the signal transmission quality of the terminal in the target cell or reduce interference. For example, it may achieve at least one of the following effects: enhancing the uplink and downlink data transmission of the terminal in the initial period of the target cell, reducing the duration of random access, reducing interference, and saving the terminal's power.

[0086] Figure 5 This diagram illustrates another flow chart of the transmission control method provided in an embodiment of this application, which can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal. Figure 5 As shown, the method may include the following steps.

[0087] S510, the terminal receives a handover command, wherein the handover command is used to instruct the terminal to hand over from the source cell to the target cell.

[0088] This step is the same as S410 above. For details, please refer to the relevant description of S410 above. It will not be repeated here.

[0089] S520, the terminal determines that the source cell and the target cell correspond to the same transceiver node.

[0090] In this embodiment of the application, after receiving the handover command, the terminal can determine whether the transceiver node corresponding to the source cell before the handover and the transceiver node (Transmission / Reception Point, TRP) corresponding to the target cell after the handover are the same transceiver node. If they are the same, the terminal determines that the transmission control information in the source cell can be used during the initial time period of the handover to the target cell.

[0091] In some embodiments, the handover command may carry first indication information indicating that the source cell and the target cell correspond to the same transceiver node. The terminal can determine the same transceiver node for the source cell and the target cell based on this first indication information. Therefore, in these embodiments, S520 may include: the terminal determining the same transceiver node for the source cell and the target cell based on the first indication information carried in the handover command. Through these embodiments, the target base station can carry first indication information indicating that the source cell and the target cell correspond to the same transceiver node in the handover command, thereby enabling the terminal to directly determine the first indication information indicating the same transceiver node for the source cell and the target cell based on this first indication information, and then use the terminal's transmission control information in the source cell to perform signal transmission in the target cell.

[0092] S530, the terminal uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0093] This step is the same as S420 above. For details, please refer to the description of the differences in S420 above. It will not be repeated here.

[0094] By utilizing the technical solution provided in this application, when the source cell and target cell correspond to the same transceiver node, the terminal uses its transmission control information in the source cell to perform signal transmission in the target cell during the initial time period of switching to the target cell. Since the source cell and target cell correspond to the same transceiver node, the transmission environment of the terminal in the target cell and the source cell may not change drastically. The transmission control information of the terminal in the source cell is relatively close to the ideal transmission control information of the terminal in the target cell. By using the transmission control information of the terminal in the source cell to perform signal transmission in the target cell during the initial time period of switching to the target cell, at least one of the following effects can be achieved: enhancing the uplink and downlink data transmission of the terminal in the target cell during the initial time period, reducing the duration of random access, reducing interference, and saving the terminal's power.

[0095] Figure 6 This diagram illustrates yet another flow chart of the transmission control method provided in an embodiment of this application, which can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal. Figure 6 As shown, the method may include the following steps.

[0096] S610, the terminal receives a handover command, wherein the handover command is used to instruct the terminal to hand over from the source cell to the target cell.

[0097] This step is the same as S410 and S510 above, and you can refer to the relevant descriptions above for details, which will not be repeated here.

[0098] S620, if at least some of the relevant parameters of the uplink power control state of the source cell are the same as at least some of the relevant parameters of the power control state of the target cell, the terminal uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0099] In this embodiment of the application, after receiving a handover command, the terminal can determine whether to use the power control status related parameters of the source cell to assist in the uplink power control of the target cell based on whether the retained uplink power control status related parameters of the source cell are the same as the power control status related parameters of the target cell (e.g., the target received power of PUSCH / PUCCH / SRS).

[0100] For example, if the target received power of the source cell's PUSCH / PUCCH / SRS is the same as the target received power of the target cell's configured PUSCH / PUCCH / SRS, the UE will use the power control state parameters of the source cell (e.g., as described above) to control the power of the source cell's PUSCH / PUCCH / SRS. , and Determine the initial value of the cumulative transmit power adjustment for the PUSCH / SRS in the target cell.

[0101] It should be noted that, in the embodiments of this application, the method prior to S620 may or may not include S520 described above. For example, if the received handover command carries first indication information indicating that the source cell and the target cell correspond to the same transceiver node, the terminal may further determine whether at least some related parameters of the uplink power control state of the source cell are the same as at least some related parameters of the power control state of the target cell. Alternatively, the handover command may not carry the aforementioned first indication information, and the terminal, after receiving the handover command, may directly determine whether at least some related parameters of the uplink power control state of the source cell are the same as at least some related parameters of the power control state of the target cell.

[0102] In some embodiments, at least some of the relevant parameters of the above-mentioned uplink power control state may include at least one of the following: 1) Reference signal information for measuring transmission path loss; 2) Calculate the scaling factor for the first uplink signal transmission power based on transmission path loss; 3) The target received power of the second uplink signal; 4) Relevant parameters used to calculate the target received power density of the third uplink signal.

[0103] The first uplink signal includes at least one of the following: Physical Uplink Shared Information (PUSCH), Sound Reference Signal (SRS), Physical Uplink Control Channel (PUCCH), and Physical Random Access Channel (PRACH); the second uplink signal includes at least one of the following: PUSCH, SRS, PUCCH, and PRACH; and the third uplink signal includes at least one of the following: PUSCH, SRS, PUCCH, and PRACH.

[0104] In these embodiments, if at least some of the relevant parameters of the uplink power control state of the source cell are the same as at least some of the relevant parameters of the uplink power control state of the target cell, it indicates that the wireless propagation environment (including at least one of path loss, interference, and wireless signal propagation delay between the base station and the UE) of the source cell and the target cell are similar. Therefore, during the initial time period of handover to the target cell, the transmission control parameters of the source cell can be used to assist the relevant transmission control of the target cell.

[0105] The technical solution provided in this application allows the terminal to perform signal transmission in the target cell using its transmission control information in the source cell, provided that at least some of the relevant parameters of the uplink power control state of the source cell are the same as those of the target cell. This optimizes the initial values ​​of the uplink power control state parameters after handover, accelerating the convergence of the uplink power control state parameters in the target cell, improving the uplink signal transmission quality, and reducing interference from neighboring cells. Alternatively, after handover, the terminal can use its initial uplink / downlink beams, initial channel measurements, initial TA, initial frequency offset, and Doppler values ​​from the source cell to optimize uplink / downlink data transmission in the target cell.

[0106] Figure 7 This diagram illustrates yet another flow chart of the transmission control method provided in an embodiment of this application, which can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal. Figure 7 As shown, the method may include the following steps.

[0107] S710, the terminal receives a handover command, wherein the handover command is used to instruct the terminal to handover from the source cell to the target cell, and the handover command includes second indication information, the second indication information being used to configure the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0108] The difference from S410 is that the handover command received in S710 includes a second indication information, which is used to configure the terminal to use the transmission control information in the source cell to perform signal transmission in the target cell.

[0109] S720, the terminal, based on the second indication information, uses the terminal's transmission control information in the source cell to perform signal transmission in the target cell.

[0110] The difference from S420 is that in S720, the terminal performs signal transmission in the target cell based on the second instruction information and uses the transmission control information of the terminal in the source cell.

[0111] Additionally, it should be noted that before S720, the method may or may not include S520 described above. For example, the terminal may determine whether at least some relevant parameters of the uplink power control state of the source cell are the same as at least some relevant parameters of the power control state of the target cell. If they are the same, S720 is executed; otherwise, S720 is not executed. Alternatively, after receiving the handover command, the terminal may not determine whether at least some relevant parameters of the uplink power control state of the source cell are the same as at least some relevant parameters of the power control state of the target cell, and may instead use the terminal's transmission control information in the source cell to perform signal transmission in the target cell based on the second indication information.

[0112] In some embodiments, the second indication information may include at least one of the following: 1) Third indication information, used to instruct the terminal to calculate the transmission power of the target uplink signal in the target cell by using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, wherein the target uplink signal includes at least one of the following: PUSCH, PUCCH, SRS, and PRACH.

[0113] In these embodiments, the handover command can be configured to allow the terminal to use the cumulative transmit power adjustment amount in the target power control adjustment state of the source cell after handover to calculate the transmit power of the target uplink signal of the terminal in the target cell. This can accelerate the convergence of the uplink power control state parameters of the terminal in the target cell, improve the transmission quality of the uplink signal, and reduce interference from neighboring cells.

[0114] 2) Fourth instruction information, used to instruct the terminal to send an uplink signal in the target cell using the uplink timing of the source cell.

[0115] In these embodiments, the terminal can be configured in the handover command to use the uplink timing of the source cell to send uplink signals in the target cell. Since the wireless propagation environment of the source cell and the target cell is not much different, using the uplink signal sending timing of the source cell to send uplink signals in the target cell can improve the uplink data transmission quality of the terminal in the target cell.

[0116] 3) The fifth instruction information is used to instruct the terminal to send an uplink signal in the target cell using the uplink beam of the source cell.

[0117] In these embodiments, the terminal can be configured in the handover command to use the transmission beam of the uplink signal in the source cell to send the uplink signal in the target cell. Since the wireless propagation environment of the source cell and the target cell is not much different, using the uplink beam of the source cell to send the uplink signal in the target cell can improve the transmission quality of the uplink data of the terminal in the target cell.

[0118] 4) The sixth instruction information is used to instruct the terminal to receive downlink signals in the target cell using the downlink beam of the source cell.

[0119] In these embodiments, the handover command can be configured to use the downlink beam of the source cell to receive downlink signals in the target cell. Since the wireless propagation environment of the source cell and the target cell is not much different, using the downlink beam of the source cell to receive downlink signals can improve the transmission quality of downlink data of the terminal in the target cell.

[0120] 5) The seventh instruction information is used to instruct the terminal to transmit signals in the target cell using the pre-compensated frequency offset of the source cell.

[0121] In these embodiments, the terminal can be instructed in the configuration signaling to use the pre-compensated frequency offset of the source cell to transmit signals in the target cell. Since the wireless propagation environment of the source cell and the target cell is not much different, using the pre-compensated frequency offset of the source cell to transmit signals in the target cell can improve the data transmission quality of the terminal in the target cell.

[0122] In some embodiments, the third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including at least one of the following: 1) Instruct the terminal to use the cumulative transmit power adjustment amount of the first target power control adjustment state of the source cell to calculate the transmit power of the terminal in the target PUSCH (i.e., the physical channel carrying uplink data) of the target cell.

[0123] In some implementations, the first target power control adjustment state may be a power control adjustment state of the terminal in the source cell.

[0124] Through this embodiment, the terminal can be configured in the handover command to use the cumulative transmit power adjustment amount of the first target power control adjustment state of the source cell to calculate the transmit power of the target PUSCH of the terminal in the target cell. This can accelerate the convergence of the power control state parameters of the terminal in the target cell, improve the transmission quality of PUSCH, and reduce the interference of the transmitted PUSCH to neighboring cells.

[0125] 2) Instruct the terminal to use the cumulative transmit power adjustment amount of the second target power control adjustment state of the source cell to calculate the transmit power of the terminal on the target PUCCH (i.e., the physical channel carrying uplink control information) in the target cell.

[0126] In some implementations, the second target power control adjustment state may be a power control adjustment state of the terminal in the source cell.

[0127] Through this embodiment, the terminal can be configured in the handover command to use the cumulative transmit power adjustment amount of the second target power control adjustment state of the source cell to calculate the transmit power of the target PUCCH of the terminal in the target cell. This can accelerate the convergence of the power control state parameters of the PUCCH of the terminal in the target cell, improve the transmission quality of PUCCH, and reduce the interference of the transmitted PUCCH to neighboring cells.

[0128] 3) Instruct the terminal to use the cumulative transmit power adjustment amount of the third target power control adjustment state of the source cell to calculate the transmit power of the terminal in the target SRS (i.e., the physical channel carrying uplink control information) of the target cell.

[0129] In some implementations, the third target power control adjustment state may be a power control adjustment state of the terminal in the source cell.

[0130] Through this embodiment, the terminal can be configured in the handover command to use the cumulative transmit power adjustment amount of the third target power control adjustment state of the source cell to calculate the transmit power of the terminal in the target SRS in the target cell. This can accelerate the convergence of the power control state parameters of the terminal in the target cell, improve the transmission quality of the SRS, and reduce the interference of the transmitted SRS to neighboring cells.

[0131] 4) Instruct the terminal to use the cumulative transmit power adjustment amount of the fourth target power control adjustment state of the source cell to calculate the transmit power of the terminal on the target PRACH (i.e., the physical channel carrying uplink control information) in the target cell.

[0132] In some implementations, the fourth target power control adjustment state may be a power control adjustment state of the terminal in the source cell.

[0133] This embodiment allows the terminal to be configured in the handover command to calculate the transmission power of the target PRACH in the target cell using the cumulative transmission power adjustment amount of the fourth target power control adjustment state of the source cell. This accelerates the convergence of the power control state parameters of the terminal's PRACH in the target cell, improves PRACH transmission quality, and reduces interference from transmitted PRACH to neighboring cells.

[0134] In these embodiments, the target power control adjustment state may include at least one of the first target power control adjustment state, the second target power control adjustment state, the third target power control adjustment state, and the fourth target power control adjustment state described above.

[0135] Additionally, it should be noted that the first target power control adjustment state, the second target power control adjustment state, the third target power control adjustment state, and the fourth target power control adjustment state can be configured separately. The first target power control adjustment state, the second target power control adjustment state, the third target power control adjustment state, and the fourth target power control adjustment state can be the same or different. The specific embodiments of this application are not limited.

[0136] In some embodiments, the third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including one of the following: 1) Instruct the terminal to directly use the cumulative transmit power adjustment amount of the target power control adjustment state to calculate the transmit power of the target uplink signal of the terminal in the target cell; In this implementation, the handover command can be configured to allow the terminal to directly use the cumulative transmit power adjustment amount of the terminal in a certain power control adjustment state of the source cell to calculate the transmit power of the terminal in transmitting the target uplink signal in the target cell, thereby simplifying the terminal operation.

[0137] 2) Instruct the terminal to calculate the transmission power of the target uplink signal in the target cell based on the first cumulative transmission power adjustment amount obtained by the terminal based on the cumulative transmission power adjustment amount of the target power control adjustment state.

[0138] In this embodiment, the handover command can be configured to use the cumulative transmit power adjustment amount of the terminal in a certain power control adjustment state of the source cell to obtain a first cumulative transmit power adjustment amount, and use the first cumulative transmit power adjustment amount to calculate the transmit power of the terminal in the target cell to transmit the target uplink signal, thereby further ensuring the accuracy of the transmit power.

[0139] The first cumulative transmission power adjustment amount can be the cumulative transmission power adjustment amount initially used by the terminal in the target cell. During subsequent transmission, the terminal can adjust the first cumulative transmission power adjustment amount based on feedback from the network-side equipment.

[0140] In some embodiments, the first cumulative transmit power adjustment amount can be obtained by one of the following: 1) The first cumulative transmit power adjustment is X+Y dB, where X is the cumulative transmit power adjustment in the target power control adjustment state, and Y is the configured offset. In these embodiments, the handover command may instruct the terminal to obtain the first cumulative transmit power adjustment: X+Y dB according to the following algorithm.

[0141] In these embodiments, Y can be an offset configured in the switching command or a pre-configured offset.

[0142] For example, an offset Y (dB) can be configured in the handover command, instructing the UE to use X+Y (dB) as the first cumulative transmit power adjustment amount for the UE to calculate the transmit power of at least one of PUSCH, PUCCH, SRS and PRACH in the target cell.

[0143] 2) The first cumulative transmit power adjustment is m × Y dB, where X is the cumulative transmit power adjustment in the target power control adjustment state, m is a configured scaling factor, and m is a rational number greater than 0 and less than or equal to 1. In these embodiments, the switching command may instruct the terminal to obtain the first cumulative transmit power adjustment according to the following algorithm: m × X dB.

[0144] In these embodiments, m can be a scaling factor configured in the switching command or a pre-configured scaling factor.

[0145] For example, a scaling factor m (0 to 1) can be configured in the handover command to instruct the UE to use m × X (dB) as the first cumulative transmit power adjustment amount for the UE to calculate the transmit power of at least one of PUSCH, PUCCH, SRS and PRACH in the target cell.

[0146] 3) When X is within the range of cumulative transmission power adjustment, the first cumulative transmission power adjustment is X dB; or, when X is less than the lower limit of the range of cumulative transmission power adjustment, the first cumulative transmission power adjustment is the lower limit of the range of cumulative transmission power adjustment; or, when X is greater than the upper limit of the initial range of cumulative transmission power adjustment, the first cumulative transmission power adjustment is the upper limit of the range of cumulative transmission power adjustment, wherein the range of cumulative transmission power adjustment is the range indicated by the third indication information.

[0147] In these embodiments, the switching command can indicate a range of cumulative transmit power adjustment amounts. If X is within the range of cumulative transmit power adjustment amounts, X is used as the first cumulative transmit power adjustment amount. If X is less than the lower limit of the range of cumulative transmit power adjustment amounts, the lower limit of the range of cumulative transmit power adjustment amounts is used as the first cumulative transmit power adjustment amount. If X is greater than the upper limit of the range of cumulative transmit power adjustment amounts, the upper limit of the range of cumulative transmit power adjustment amounts is used as the first cumulative transmit power adjustment amount.

[0148] For example, when X is within the range of this cumulative transmit power adjustment, X is directly used as the cumulative transmit power adjustment for the UE to calculate the transmit power of at least one of PUSCH, PUCCH, SRS, and PRACH in the target cell; when X is below the lower limit of this range, the lower limit of this range is used as the cumulative transmit power adjustment for the UE to calculate the transmit power of at least one of PUSCH, PUCCH, SRS, and PRACH in the target cell; when X is above the upper limit of this range, the upper limit of this range is used as the cumulative transmit power adjustment for the UE to calculate the transmit power of at least one of PUSCH, PUCCH, SRS, and PRACH in the target cell.

[0149] Through the technical solutions provided in the embodiments of this application, the network-side device can switch the command configuration of the UE to use its transmission control information in the source cell to perform transmission control in the target cell during the initial time period. This is beneficial to enhance the uplink and downlink data transmission of the UE in the initial time period of the target cell, reduce the duration of random access, reduce interference, and save the UE's power.

[0150] Based on the same inventive concept, this application also provides a handover method, which can be executed at a target base station, which can be the base station corresponding to the target cell to which the terminal is handing over. It should be noted that the following description mainly focuses on operations related to the target base station; for other matters not covered herein, please refer to the relevant descriptions on the terminal side above.

[0151] Figure 8This diagram illustrates a flowchart of a handover method provided in an embodiment of this application. This method 800 can be executed by a target base station, which can be the base station (e.g., TRP) corresponding to the target cell when the terminal hands over from the source cell. In other words, the method can be executed by software or hardware installed on the target base station. Figure 8 As shown, the method may include the following steps.

[0152] S810, the target base station receives a handover request sent by the source base station, wherein the handover request is used to request the terminal to be handed over from the source cell to the target cell.

[0153] In this embodiment of the application, when the source base station initiates a handover from the source cell to the target cell, it sends a handover request to the target base station.

[0154] S820, the target base station sends a handover request response message to the source base station, wherein the handover request response message includes a handover command sent to the terminal, the handover command being used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0155] In this embodiment of the application, upon receiving one of the aforementioned handover requests, the target base station can obtain a handover command. This handover command can be used to indicate that the source cell and the target cell correspond to the same transceiver node. For example, the source cell can be... Figure 3 The 5G cells in the target cells can be Figure 3 The same applies to 6G cells in the source cell and vice versa. Alternatively, the handover command can configure the terminal to transmit control information in the source cell and perform signal transmission in the target cell. Then, the target base station sends the handover command in a handover request response message to the source base station, which then sends the handover command to the terminal.

[0156] Through the technical solutions provided in the embodiments of this application, the target base station can instruct the source cell and the target cell to have the same transceiver node or configure the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell through a handover command. This enables the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell after receiving the handover command, thereby enhancing the terminal's data transmission in the target cell, reducing the duration of random access, reducing interference, and saving the terminal's power.

[0157] In some embodiments, the handover request carries at least one of the following: information about the source cell of the terminal, and transmission control information of the terminal in the source cell. The source cell information allows the target base station to determine whether the source cell and the target cell correspond to the same transceiver node.

[0158] In some embodiments, the information of the source cell of the terminal includes at least one of the following: 1) The identification information of the source cell; 2) Identification information of the transceiver node serving the terminal in the source cell; 3) The latest CSI information reported by the terminal to the source cell; 4) Quality information of the uplink signal measured in the source cell; 5) Beam information; 6) Space receiver (RX) parameter information; 7) Doppler frequency shift information; 8) Doppler diffusion information; 9) Average latency information; 10) Delayed diffusion information; 11) A reference signal having a predetermined quasi-co-location (QCL) relationship with communication transmissions of at least one of the target cell and the source cell; The predetermined QCL relationship may include at least one of Doppler shift, Doppler spread, average delay, delay spread, and spatial RX parameters.

[0159] 12) Timing information; 13) Configuration information for CSI measurement signals.

[0160] By using at least one piece of information from the source cell, the target base station can determine whether the source cell and the target cell correspond to the same transceiver node.

[0161] In some embodiments, the transmission control information includes at least one of the following: power control information, beam control information, downlink channel CSI information, and uplink channel quality information.

[0162] Optionally, the power control information includes at least one of the following: 1) The first parameter regarding PUSCH transmit power control.

[0163] Optionally, the first parameter may include at least one of the following: - An identifier for one or more power control adjustment states used for PUSCH power control; - Parameters used to determine the target received power density of PUSCH; - Calculate the proportional factor for PUSCH transmission power based on propagation path loss; - Nominal power; - The nominal power of the PUSCH with authorized scheduling; - Nominal power of unauthorized dispatched PUSCH; - Target received power of the preamble; - Power offset value, which can be positive or negative; - Power ramping parameters, including power ramp step size, power ramp counter, maximum number of power ramps, etc. -Maximum transmit power; - Power offset of message 3 (Msg3) PUSCH and PRACH / WUS preamble; - Power offset of message A (MsgA) PUSCH and PRACH / WUS preamble; - Accumulated value of transmit power control (TPC); -TPC; - Full-power transmission mode configuration information; -Power rating; -Power level offset; -Power rollback; -Road loss estimation reference signal.

[0164] 2) The second parameter regarding PUCCH transmit power control.

[0165] Optionally, the second parameter may include at least one of the following: - An identifier for one or more power control adjustment states used for PUCCH power control; - Parameters used to determine the target receive power density of PUCCH; -Nominal power; -Target received power of the preamble; - Power offset value, which can be positive or negative; - Power ramping parameters include at least one of the following: power ramp step size, power ramp counter, and maximum number of power ramps; -Maximum transmit power; -TPC accumulated value; -TPC; - Full-power transmission mode configuration information; -Power rating; -Power level offset; -Power rollback; - Calculate the proportional factor for PUCCH transmission power based on propagation path loss; -Road loss estimation reference signal.

[0166] 3) The third parameter regarding SRS transmit power control.

[0167] Optionally, the third parameter may include at least one of the following: - Identifiers for one or more power control adjustment states used for SRS power control; - Parameters used to determine the target received power density of SRS; - A scaling factor for calculating SRS transmission power based on propagation path loss; -Nominal power, such as the P0 power configuration of SRS; - Power offset value, which can be positive or negative; - Power ramping parameters include at least one of the following: power ramp step size, power ramp counter, and maximum number of power ramps; -Maximum transmit power; -TPC accumulated value; -TPC; - Full-power transmission mode configuration information; -Power rating; Power level offset; -Power rollback.

[0168] 4) A fourth parameter related to the transmit power of PRACH or uplink WUS.

[0169] Optionally, the fourth parameter may include at least one of the following: -Target received power; - Power offset value, which can be positive or negative; - Power ramping parameters include at least one of the following: power ramp step size, power ramp counter, and maximum number of power ramps; -Maximum transmit power; - Full-power transmission mode configuration information; -Power rating; -Power level offset; -Power rollback; - Calculate the proportional factor for PUCCH transmission power based on propagation path loss; -Road loss estimation reference signal.

[0170] 5) Path loss estimation signals. For example, CSI Reference Signal (CSI-RS) or Synchronization Signal Block (SSB).

[0171] In some embodiments, the beam control information includes at least one of the following: 1) The configuration of the transceiver antennas on the terminal side of the source cell; 2) Antenna configuration on the base station side of the source cell; 3) The downlink serving beam of the terminal; 4) The uplink service beam of the terminal.

[0172] In some embodiments, before the target base station sends a handover request response message to the source base station, the method further includes at least one of the following: 1) The target base station determines the same transceiver node corresponding to the source cell and the target cell based on the information of the source cell of the terminal; 2) Based on the information carried in the handover request, the target base station determines to configure the terminal to use the terminal's transmission control information in the source cell to perform signal transmission in the target cell.

[0173] For example, the target base station can determine whether to configure the UE to utilize relevant parameters of the source cell (such as power control state parameters) based on some information carried in the handover request. , and (etc.) Assist the UE in signal transmission in the target cell (e.g., signal power control, determination of signal transmission beam, determination of signal transmission timing, time or frequency offset required for pre-compensation of signal transmission, CSI reporting of signal transmission scheduling requirements, and determination of measurement signals for measuring CSI, etc.).

[0174] In some embodiments, the handover command includes second indication information, which is used to configure the terminal to use the terminal's transmission control information in the source cell to perform signal transmission in the target cell.

[0175] In some embodiments, the second indication information includes at least one of the following: 1) Third indication information, used to instruct the terminal to calculate the transmission power of the target uplink signal in the target cell by using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, wherein the target uplink signal includes at least one of the following: PUSCH, PUCCH, SRS, and PRACH; 2) Fourth instruction information, used to instruct the terminal to send an uplink signal in the target cell using the uplink timing of the source cell; 3) The fifth instruction information is used to instruct the terminal to send an uplink signal in the target cell using the uplink beam of the source cell; 4) The sixth instruction information is used to instruct the terminal to receive downlink signals in the target cell using the downlink beam of the source cell; 6) The seventh instruction information is used to instruct the terminal to transmit signals in the target cell using the pre-compensated frequency offset of the source cell.

[0176] In some embodiments, the third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including at least one of the following: 1) Instruct the terminal to calculate the transmission power of the target PUSCH in the target cell using the cumulative transmission power adjustment amount of the first target power control adjustment state of the source cell; 2) Instruct the terminal to calculate the transmission power of the target PUCCH in the target cell using the cumulative transmission power adjustment amount of the second target power control adjustment state of the source cell; 3) Instruct the terminal to calculate the transmission power of the target SRS in the target cell using the cumulative transmission power adjustment amount of the third target power control adjustment state of the source cell; 4) Instruct the terminal to calculate the transmission power of the target PRACH in the target cell using the cumulative transmission power adjustment amount of the fourth target power control adjustment state of the source cell.

[0177] In some embodiments, the third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including one of the following: 1) Instruct the terminal to directly use the cumulative transmit power adjustment amount of the target power control adjustment state to calculate the transmit power of the target uplink signal of the terminal in the target cell; 2) The handover command instructs the terminal to calculate the transmission power of the target uplink signal in the target cell based on a first cumulative transmission power adjustment amount obtained from the cumulative transmission power adjustment amount of the target power control adjustment state. In these embodiments, the handover command may instruct the terminal to obtain a first cumulative transmission power adjustment amount based on the cumulative transmission power adjustment amount of the target power control adjustment state, and use the first cumulative transmission power adjustment amount to calculate the transmission power of the target uplink signal in the target cell.

[0178] In some embodiments, the first cumulative transmit power adjustment amount is obtained by one of the following: 1) Indicates that the first cumulative transmit power adjustment is X+Y dB, where X is the cumulative transmit power adjustment in the target power control adjustment state, and Y is the configured offset. In these embodiments, the switching command may instruct the terminal to obtain the first cumulative transmit power adjustment according to the following algorithm: X+Y dB; 2) Indicates that the first cumulative transmit power adjustment is m × Y dB, where X is the cumulative transmit power adjustment in the target power control adjustment state, m is a configured scaling factor, and m is a rational number greater than 0 and less than or equal to 1. In these embodiments, the switching command may instruct the terminal to obtain the first cumulative transmit power adjustment according to the following algorithm: m × X dB; 3) When X is within the cumulative transmit power adjustment range, the first cumulative transmit power adjustment is X dB; or, when X is less than the lower limit of the cumulative transmit power adjustment range, the first cumulative transmit power adjustment is the lower limit of the cumulative transmit power adjustment range; or, when X is greater than the upper limit of the initial cumulative transmit power adjustment range, the first cumulative transmit power adjustment is the upper limit of the cumulative transmit power adjustment range, wherein the cumulative transmit power adjustment range is the range indicated by the third indication information. In these embodiments, the switching command can indicate the cumulative transmit power adjustment range, using X as the first cumulative transmit power adjustment when X is within the cumulative transmit power adjustment range, using the lower limit of the cumulative transmit power adjustment range as the first cumulative transmit power adjustment when X is less than the lower limit of the cumulative transmit power adjustment range, and using the upper limit of the cumulative transmit power adjustment range as the first cumulative transmit power adjustment when X is greater than the upper limit of the cumulative transmit power adjustment range.

[0179] The technical solution provided in this application embodiment allows the target base station to configure the UE to use its transmission control information in the source cell to transmit control information in the target cell during the initial time period. This is beneficial for enhancing the uplink and downlink data transmission of the UE in the initial time period of the target cell, reducing the duration of random access, reducing interference, and saving the UE's power.

[0180] Based on the same inventive concept, this application also provides another handover method, which can be executed at a source base station, which can be the base station corresponding to the source cell before the terminal handover. It should be noted that the following description mainly focuses on the operations related to the source base station; for other matters not covered herein, please refer to the relevant descriptions on the terminal side and the target base station side above.

[0181] Figure 9 This diagram illustrates a flowchart of another handover method provided in an embodiment of this application. This method 900 can be executed by a source base station, which can be the base station (e.g., TRP) corresponding to the source cell when the terminal hands over from the source cell to the target cell. In other words, the method can be executed by software or hardware installed on the source base station. Figure 9 As shown, the method may include the following steps.

[0182] S910, The source base station receives the measurement results of the target cell from the terminal; S920, the source base station sends a handover request to the target base station corresponding to the target cell, wherein the handover request is used to request the terminal to be handed over from the source cell to the target cell, and the handover request carries at least one of the following: information of the source cell of the terminal, and transmission control information of the terminal in the source cell.

[0183] S930, the source base station receives a handover request response message sent by the target base station, wherein the handover request response message includes a handover command sent to the terminal, and the handover command is used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0184] The target base station can send a handover request response message to the source base station in accordance with the method described in method 800 above, as detailed in the relevant description in method 800 above.

[0185] S940, the source base station sends the handover command to the terminal.

[0186] The technical solution provided in this application embodiment allows the target base station to configure the UE to use its transmission control information in the source cell to perform transmission control in the target cell during the initial time period through the source base station configuration. This is beneficial for enhancing the uplink and downlink data transmission of the UE in the target cell during the initial time period, reducing the duration of random access, reducing interference, and saving the UE's power.

[0187] In some embodiments, the information of the source cell of the terminal includes at least one of the following: 1) The identification information of the source cell; 2) Identification information of the transceiver node serving the terminal in the source cell; 3) The latest CSI information reported by the terminal to the source cell; 4) Quality information of the uplink signal measured in the source cell; 5) Beam information; 6) Space receiver (RX) parameter information; 7) Doppler frequency shift information; 8) Doppler diffusion information; 9) Average latency information; 10) Delayed diffusion information; 11) A reference signal having a predetermined quasi-co-location (QCL) relationship with communication transmissions of at least one of the target cell and the source cell; The predetermined QCL relationship may include at least one of Doppler shift, Doppler spread, average delay, delay spread, and spatial RX parameters.

[0188] 12) Timing information; 13) Configuration information for CSI measurement signals.

[0189] By using at least one piece of information from the source cell, the target base station can determine whether the source cell and the target cell correspond to the same transceiver node.

[0190] In some embodiments, the transmission control information includes at least one of the following: power control information, beam control information, downlink channel CSI information, and uplink channel quality information.

[0191] Optionally, the power control information includes at least one of the following: 1) The first parameter regarding PUSCH transmit power control.

[0192] Optionally, the first parameter may include at least one of the following: - An identifier for one or more power control adjustment states used for PUSCH power control; - Parameters used to determine the target received power density of PUSCH; - Calculate the proportional factor for PUSCH transmission power based on propagation path loss; - Nominal power; - The nominal power of the PUSCH with authorized scheduling; - Nominal power of unauthorized dispatched PUSCH; - Target received power of the preamble; - Power offset value, which can be positive or negative; - Power ramping parameters, including power ramp step size, power ramp counter, maximum number of power ramps, etc. -Maximum transmit power; - Power offset of message 3 (Msg3) PUSCH and PRACH / WUS preamble; - Power offset of message A (MsgA) PUSCH and PRACH / WUS preamble; - Accumulated value of transmit power control (TPC); -TPC; - Full-power transmission mode configuration information; -Power rating; -Power level offset; -Power rollback; -Road loss estimation reference signal.

[0193] 2) The second parameter regarding PUCCH transmit power control.

[0194] Optionally, the second parameter may include at least one of the following: - An identifier for one or more power control adjustment states used for PUCCH power control; - Parameters used to determine the target receive power density of PUCCH; -Nominal power; -Target received power of the preamble; - Power offset value, which can be positive or negative; - Power ramping parameters include at least one of the following: power ramp step size, power ramp counter, and maximum number of power ramps; -Maximum transmit power; -TPC accumulated value; -TPC; - Full-power transmission mode configuration information; -Power rating; -Power level offset; -Power rollback; - Calculate the proportional factor for PUCCH transmission power based on propagation path loss; -Road loss estimation reference signal.

[0195] 3) The third parameter regarding SRS transmit power control.

[0196] Optionally, the third parameter may include at least one of the following: - Identifiers for one or more power control adjustment states used for SRS power control; - Parameters used to determine the target received power density of SRS; - A scaling factor for calculating SRS transmission power based on propagation path loss; -Nominal power, such as the P0 power configuration of SRS; - Power offset value, which can be positive or negative; - Power ramping parameters include at least one of the following: power ramp step size, power ramp counter, and maximum number of power ramps; -Maximum transmit power; -TPC accumulated value; -TPC; - Full-power transmission mode configuration information; -Power rating; Power level offset; -Power rollback.

[0197] 4) A fourth parameter related to the transmit power of PRACH or uplink WUS.

[0198] Optionally, the fourth parameter may include at least one of the following: -Target received power; - Power offset value, which can be positive or negative; - Power ramping parameters include at least one of the following: power ramp step size, power ramp counter, and maximum number of power ramps; -Maximum transmit power; - Full-power transmission mode configuration information; -Power rating; -Power level offset; -Power rollback; - Calculate the proportional factor for PUCCH transmission power based on propagation path loss; -Road loss estimation reference signal.

[0199] 5) Path loss estimation signals. For example, CSI Reference Signal (CSI-RS) or Synchronization Signal Block (SSB).

[0200] In some embodiments, the beam control information includes at least one of the following: 1) The configuration of the transceiver antennas on the terminal side of the source cell; 2) Antenna configuration on the base station side of the source cell; 3) The downlink serving beam of the terminal; 4) The uplink service beam of the terminal.

[0201] In some embodiments, before the source base station sends a handover request to the target base station corresponding to the target cell, the method may further include: the source base station obtaining neighboring cell information that shares a transceiver node with the source base station cell from an operation and maintenance management (OAM) server, wherein the neighboring cell information includes at least one of the following: Identification information of neighboring base stations belonging to neighboring cells; The TRP identifier shared by the source base station cell and neighboring base station cells; Identification information of neighboring base station cells that share a TRP with the source base station cell.

[0202] Through these embodiments, the source base station can obtain information about neighboring cells that share transceiver nodes with the source base station cell, and thus, based on this information, determine whether the target cell for terminal handover shares transceiver nodes with the source cell during terminal handover.

[0203] The following uses the handover of a UE from a 5G cell to a 6G cell as an example to illustrate the technical solution provided in this application embodiment. It should be noted that the process of a UE handover from a 6G cell to a 5G cell is similar to that of handover from a 5G cell to a 6G cell, and will not be repeated in detail in this application embodiment.

[0204] Figure 10 This illustration shows a flowchart of a UE switching from a 5G cell to a 6G cell in an embodiment of this application. Figure 10 As shown, it mainly includes the following steps.

[0205] S1001, the UE that establishes a radio connection with the source cell obtains the measurement results about the target cell according to the target cell measurement and reporting configuration received from the base station, and reports them to the current serving cell (source cell).

[0206] S1002, the source base station (i.e., the base station corresponding to the source cell) receives the measurement results of the UE about the target cell, determines to initiate the UE handover procedure, and sends a handover request about the UE to the target cell.

[0207] The source base station may carry information about the UE's source serving cell and the UE's transmission control information in the source cell in the handover request; the transmission control information includes the UE's power control information, beam, uplink timing, CSI, frequency offset, and other related information.

[0208] The information of the source serving cell of the UE includes at least one of the following: 1) Identification information of the source community; 2) TRR identification information used by the source cell to serve the UE, e.g., IP address, TRP ID, etc.; 3) SSB beam identifier information used by the source cell to serve the UE, etc. 4) The latest CSI information reported by the UE in the source cell (corresponding UL / DL TCI-state configuration...) 5) Quality parameters of the uplink signal measured in the source cell. 6) Beam / Spatial RX parameter information; 7) Doppler shift information; 8) Doppler spread information; 9) Average delay information; 10) Delay spread information; 11) Communicating with the target cell or source cell to transmit a reference signal having a specific QCL relationship, wherein the specific QCL relationship includes at least one of Doppler shift, Doppler spread, average delay, delay spread, and Spatial RX parameters. 12) Timing information, including at least one of the following: timing information, pre-compensated timing offset information, such as pre-compensated frequency offset information. 13) CSI measurement signal configuration information.

[0209] The transmission control information includes power control information, which includes at least one of the following: 1) Regarding the transmit power control parameters of PUSCH.

[0210] The transmit power control parameter may include at least one of the following: a) Identifiers for one or more power control adjustment states used for PUSCH power control; b) Parameters used to determine the target received power density of PUSCH; c) Calculate the proportional factor of PUSCH transmission power based on propagation path loss; d) Nominal power; e) The nominal power of PUSCH with authorized scheduling; f) The nominal power of PUSCH without authorization scheduling; g) Preamble target received power; h) Power offset value, which can be positive or negative; i) Power ramping parameters, including power ramp step size, power ramp counter, and maximum number of power ramps; j) Maximum transmit power; k) Power offset of Msg3 PUSCH and PRACH / WUS preamble; l) Power offset of MsgA PUSCH and PRACH / WUS preamble; m) TPC cumulative value; n)TPC; o) Full-power transmission mode configuration information; p) Power rating; q) Power level offset; r) Power backoff; s) Road loss estimation reference signal.

[0211] 2) Parameters related to PUCCH transmit power control include at least one of the following: a) Identifiers for one or more power control adjustment states used for PUCCH power control; b) Parameters used to determine the target receiver power density of PUCCH; c) Nominal power; d) Preamble target received power; e) Power offset value, which can be positive or negative; f) Power ramping parameters, including power ramp step size, power ramp counter, and maximum number of power ramps; g) Maximum transmission power; h) TPC cumulative value; i)TPC; j) Full-power transmission mode configuration information; k) Power rating; l) Power level deviation; m) Power backoff; n) A scaling factor for calculating PUCCH transmission power based on propagation path loss; o) Road loss estimation reference signal.

[0212] 3) Regarding the SRS transmit power control parameters, at least one of the following is included: a) Identifiers for one or more power control adjustment states used for SRS power control; b) Parameters used to determine the target received power density of the SRS; c) Calculate the scaling factor for SRS transmission power based on propagation path loss; d) Nominal power, such as the P0 power configuration of SRS; e) Power offset value, which can be positive or negative; f) Power ramping parameters, including power ramp step size, power ramp counter, and maximum number of power ramps; g) Maximum transmission power; h) TPC cumulative value; i)TPC; j) Full-power transmission mode configuration information; k) Power rating; l) Power level deviation; m) Power back-off.

[0213] 4) Regarding PRACH or uplink WUS transmit power related parameters: a) Target received power; b) Power offset value, which can be positive or negative; c) Power ramping parameters, including power ramp step size, power ramp counter, and maximum number of power ramps; d) Maximum transmit power; e) Full-power transmission mode configuration information; f) Power rating; g) Power level offset; h) Power backoff; i) Calculate the proportional factor of PUCCH transmission power based on propagation path loss; j) Road loss estimation reference signal.

[0214] 5) Path loss estimation signals, such as CSI-RS or SSB.

[0215] The transmission control information includes beam control information, which includes information about the UE's uplink and downlink beams in the source cell. Optionally, it may include at least one of the following: 1) UE-side transceiver antenna configuration of the source cell; 2) Antenna configuration on the base station side of the source cell; 3) UE downlink service beam; 4) UE uplink service beam.

[0216] S1003, the target base station receives a handover request for the UE from the source base station, and determines whether to configure the UE to use the transmission control information of the source cell to perform uplink and downlink data transmission and reception in the target cell, or whether the source cell and the target cell correspond to the same transceiver node, based on the partial information carried in the handover request.

[0217] The target base station can determine whether to configure the UE to utilize relevant parameters of the source cell (such as power control status parameters) based on some information carried in the handover request. , and (etc.) Assisting the UE in signal transmission in the target cell (e.g., signal power control, determination of the signal transmission beam, determination of the signal transmission timing, time or frequency offset pre-compensation required for signal transmission, CSI reporting required for signal transmission scheduling, and determination of measurement signals for CSI measurement, etc.). For example, if the target base station determines to configure the UE to use the power control state-related parameters of the source cell to assist the UE in power control in the target cell, the target base station instructs the UE in the handover command to use the power control state of the source cell to assist the UE in determining the transmission power calculation in the target cell.

[0218] Alternatively, based on the partial information carried in the handover request, it can be determined whether the source cell and the target cell correspond to the same transceiver node.

[0219] For example, the target base station may include second indication information in the handover command, which configures the UE to perform at least one of the following: a) Calculate the transmission power of the UE in the target cell's PUSCH (i.e., the physical channel carrying uplink data) using the cumulative transmission power adjustment amount of the UE in a certain power control adjustment state of the source cell; b) Calculate the transmission power of the UE in the target cell's PUCCH (i.e., the physical channel carrying uplink control information) using the cumulative transmission power adjustment amount of the UE in a certain power control adjustment state of the source cell; c) Calculate the UE's SRS (i.e., the physical channel carrying uplink control information) transmission power in the target cell using the cumulative transmission power adjustment amount of the UE in a certain power control adjustment state of the source cell. d) Calculate the transmission power of the UE in the target cell's PRACH (i.e., the physical channel carrying uplink control information) using the cumulative transmission power adjustment amount of the UE in a certain power control adjustment state of the source cell; The calculation of the UE's PUSCH / PUCCH / SRS / PRACH transmission power in the target cell using the cumulative transmission power adjustment amount of the UE in a certain power control adjustment state of the source cell includes at least one of the following: e) Configure the UE to directly use the cumulative transmit power adjustment amount X in the power control adjustment state of the source cell to calculate the transmit power of at least one of PUSCH / PUCCH / SRS / PRACH in the target cell; f) Configure the UE to obtain a cumulative transmit power adjustment amount X based on the cumulative transmit power adjustment amount X in the power control adjustment state of the source cell through a predefined / preconfigured / configured algorithm. This cumulative transmit power adjustment amount is used to calculate the transmit power of at least one of PUSCH / PUCCH / SRS / PRACH.

[0220] For example, an offset Y (dB) can be configured through a handover command, instructing the UE to use X+Y (dB) as the cumulative transmit power adjustment amount for the UE to calculate the transmit power of at least one of PUSCH / PUCCH / SRS / PRACH in the target cell.

[0221] For example, a scaling factor m (0-1) can be configured through a handover command to instruct the UE to use m × X (dB) as the cumulative transmit power adjustment amount for the UE to calculate the transmit power of at least one of PUSCH / PUCCH / SRS / PRACH in the target cell.

[0222] For example, the base station can configure a cumulative transmit power adjustment range for the UE via a handover command, and the UE performs at least one of the following: 1) When X is within this range, X is directly used as the cumulative transmission power adjustment amount for the UE to calculate the transmission power of at least one of PUSCH / PUCCH / SRS / PRACH in the target cell; 2) When X is below the lower limit of this range, the lower limit of this range is used as the cumulative transmission power adjustment amount for the UE to calculate the transmission power of at least one of PUSCH / PUCCH / SRS / PRACH in the target cell; 3) When X is above the upper limit of this range, the upper limit of this range is used as the cumulative transmit power adjustment amount for the UE to calculate the transmit power of at least one of PUSCH / PUCCH / SRS / PRACH in the target cell.

[0223] Optionally, after receiving the handover request from the source base station, the target base station can determine, based on the information about the UE's source cell carried in the handover request, that if the target cell and the source cell use the same radio frequency components (e.g., RRU / AAU) and the same antenna panel to serve the UE after the UE hands over from the source cell to the target cell, then it can determine that relevant parameters of the UE's power control adjustment state using the source cell can be configured to obtain the cumulative transmission power adjustment amount for the UE to calculate the uplink transmission power in the target cell.

[0224] S1004, the target base station sends a handover request response message to the source base station, which includes a handover command to be sent to the UE.

[0225] The handover command may include the aforementioned second indication information or the first indication information indicating that the source cell and the target cell correspond to the same transceiver node.

[0226] S1005, after receiving the handover request response message, the source base station sends the handover command in it to the UE.

[0227] S1006, after receiving the handover command, the UE performs signal transmission based on the second indication information carried in the handover command or the first indication information indicating that the source cell and the target cell correspond to the same transceiver node.

[0228] The UE uses relevant parameters of the source cell to assist in signal transmission on the target cell, based on the second or first indication information carried in the handover command. These relevant parameters of the source cell include, but are not limited to, at least one of the following: power control, uplink / downlink signal transmission beam, determination of uplink signal transmission timing, time or frequency offset requiring pre-compensation for signal transmission, CSI reporting for signal transmission scheduling, and measurement signals for measuring CSI.

[0229] Optionally, the UE utilizes relevant parameters of the source cell to assist signal transmission in the target cell, including at least one of the following: 1) The UE performs uplink power control in the target cell using the power control state parameters of the source cell, including determining the uplink power control to be performed in the target cell according to a), b), c), d), e) and f) of 1003 above.

[0230] 2) The UE uses the timing or beam of the source cell, or the pre-compensated time offset or frequency offset and other related parameters to perform signal transmission in the target cell.

[0231] 3) The UE uses the measurement signals configured in the source cell, such as CSI-RS, to obtain CSI and report it to the target cell, and performs reasonable scheduling and control of the signal transmission in the target cell.

[0232] 4) When the UE performs RRC reconfiguration based on the handover command, it retains at least one of the relevant parameters from the source cell.

[0233] Optionally, the above method further includes, before initiating the handover request, the source base station obtains information about neighboring cells that share a TRP with the source base station cell from the OAM server, wherein the neighboring cell information includes: 1) Identification information of neighboring base stations belonging to neighboring cells; 2) A TRP identifier shared by the source base station cell and a neighboring base station cell; 3) Identification information of neighboring base station cells that share a TRP with the source base station cell.

[0234] It should be noted that although the above method is illustrated by taking the terminal determining whether to use the relevant parameters of the source cell to assist in signal transmission on the target cell based on the second indication information or the first indication information carried in the handover command as an example, it is not limited to this. The UE can also determine on its own whether to use the relevant parameters of the source cell to assist in signal transmission on the target cell.

[0235] For example, the UE determines whether to use the source cell's power control state-related parameters to assist in uplink power control in the target cell based on whether the retained source cell's uplink power control state-related parameters are the same as the target cell's power control state-related parameters (e.g., the scaling factor for calculating PUSCH / SRS transmit power based on propagation path loss). For instance, if the source cell's scaling factor for calculating PUSCH / SRS transmit power based on propagation path loss is the same as the target cell's configured scaling factor for calculating PUSCH / SRS transmit power based on propagation path loss, the UE determines whether to use the source cell's power control state parameters (e.g., the scaling factor for calculating PUSCH / SRS transmit power based on propagation path loss) to assist in uplink power control in the target cell. ,and Determine the initial value of the cumulative transmit power adjustment for the PUSCH / SRS in the target cell.

[0236] Optionally, the UE further determines whether to utilize the source cell's power control state-related parameters to assist uplink power control in the target cell based on whether the retained source cell's uplink power control state-related parameters are the same as the target cell's power control state-related parameters (e.g., target received power of PUSCH / PUCCH / SRS). For example, if the target received power of the source cell's PUSCH / PUCCH / SRS is the same as the target received power of the target cell's configured PUSCH / PUCCH / SRS, the UE determines whether to utilize the source cell's power control state-related parameters to assist uplink power control in the target cell. , and Determine the initial value of the cumulative transmit power adjustment for the PUSCH / SRS in the target cell.

[0237] With the technical solution provided in the embodiments of this application, when the propagation environment of the target cell and the source cell of the UE handover does not change drastically (e.g., MRSS), the UE can use its transmission control information in the source cell to perform transmission control in the initial time period of the target cell. This is beneficial to enhance the uplink and downlink data transmission of the UE in the initial time period of the target cell, reduce the duration of random access, reduce interference, and save the UE's power.

[0238] The transmission control method or switching method provided in this application can be executed by a transmission control device or a switching device. This application uses an example of a transmission control device or a switching device executing the transmission control method or switching method to illustrate the transmission control device or switching device provided in this application.

[0239] This application provides a transmission control device or switching device. As an example, the transmission control device or switching device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0240] The transmission control device or switching device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0241] For details, see Figure 11 When the transmission control device is a terminal or a component in a terminal, the transmission control device 1100 includes a receiving module 1101 for receiving a handover command, wherein the handover command is used to instruct the terminal to hand over from the source cell to the target cell; and a processing module 1102 for using the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0242] In some embodiments, the processing module 1102 determines that the source cell and the target cell correspond to the same transceiver node.

[0243] In some embodiments, the processing module 1102 determines that the source cell and the target cell correspond to the same transceiver node, including: determining the source cell and the target cell correspond to the same transceiver node based on the first indication information carried in the handover command.

[0244] In some embodiments, the processing module 1102 uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell, including: When at least some of the relevant parameters of the uplink power control state of the source cell are the same as at least some of the relevant parameters of the power control state of the target cell, the terminal uses the transmission control information of the source cell to perform signal transmission in the target cell.

[0245] In some embodiments, at least some of the relevant parameters of the uplink power control state include at least one of the following: Reference signal information for measuring transmission path loss; The scaling factor for the first uplink signal transmission power is calculated based on transmission path loss. The target received power of the second uplink signal; Relevant parameters used to calculate the target received power density of the third uplink signal; The first uplink signal includes at least one of the following: Physical Uplink Shared Information (PUSCH), Sound Reference Signal (SRS), Physical Uplink Control Channel (PUCCH), and Physical Random Access Channel (PRACH); the second uplink signal includes at least one of the following: PUSCH, SRS, PUCCH, and PRACH; and the third uplink signal includes at least one of the following: PUSCH, SRS, PUCCH, and PRACH.

[0246] In some embodiments, the handover command includes second indication information, which is used to configure the terminal to use the terminal's transmission control information in the source cell to perform signal transmission in the target cell.

[0247] In some embodiments, the processing module 1102 uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell, including: based on the second indication information, using the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0248] In some embodiments, the second indication information includes at least one of the following: The third indication information is used to instruct the terminal to calculate the transmission power of the target uplink signal in the target cell by using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, wherein the target uplink signal includes at least one of the following: PUSCH, PUCCH, SRS, and PRACH; The fourth instruction information is used to instruct the terminal to send an uplink signal in the target cell using the uplink timing of the source cell; The fifth instruction information is used to instruct the terminal to send an uplink signal in the target cell using the uplink beam of the source cell; The sixth instruction information is used to instruct the terminal to receive downlink signals in the target cell using the downlink beam of the source cell; The seventh instruction information is used to instruct the terminal to transmit signals in the target cell using the pre-compensated frequency offset of the source cell.

[0249] In some embodiments, the third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including at least one of the following: The terminal is instructed to calculate the transmission power of the target PUSCH in the target cell using the cumulative transmission power adjustment amount of the first target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target PUCCH in the target cell using the cumulative transmission power adjustment amount of the second target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target SRS in the target cell by using the cumulative transmission power adjustment amount of the third target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target PRACH in the target cell using the cumulative transmission power adjustment amount of the fourth target power control adjustment state of the source cell.

[0250] In some embodiments, the third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including one of the following: The terminal is instructed to directly use the cumulative transmit power adjustment amount of the target power control adjustment state to calculate the transmit power of the target uplink signal of the terminal in the target cell; The terminal is instructed to calculate the transmission power of the target uplink signal in the target cell based on the first cumulative transmission power adjustment amount obtained from the cumulative transmission power adjustment amount of the target power control adjustment state.

[0251] In some embodiments, the first cumulative transmit power adjustment amount is obtained by one of the following: The first cumulative transmit power adjustment is indicated to be X+Y dB, where X is the cumulative transmit power adjustment in the target power control adjustment state, and Y is the configured offset; The first cumulative transmit power adjustment is indicated as m × Y dB, where X is the cumulative transmit power adjustment of the target power control adjustment state, m is the configured scaling factor, and m is a rational number greater than 0 and less than or equal to 1. When X is within the range of cumulative transmission power adjustment, the first cumulative transmission power adjustment is X dB; or, when X is less than the lower limit of the range of cumulative transmission power adjustment, the first cumulative transmission power adjustment is the lower limit of the range of cumulative transmission power adjustment; or, when X is greater than the upper limit of the initial range of cumulative transmission power adjustment, the first cumulative transmission power adjustment is the upper limit of the range of cumulative transmission power adjustment, wherein the range of cumulative transmission power adjustment is the range indicated by the third indication information.

[0252] In some embodiments, the transmission control information includes at least one of the following: power control information, transmission beam of uplink signal, transmission beam of downlink signal, uplink signal transmission timing, pre-compensation time required for signal transmission, frequency offset required for pre-compensation for signal transmission, channel state information (CSI) required for signal transmission scheduling, and measurement signal for measuring CSI.

[0253] In some embodiments, the processing module 1102 uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell, including at least one of the following: During signal transmission in the target cell, the terminal uses the power control information in the source cell to perform uplink power control in the target cell. Using the terminal, at least one of the following is used in the source cell: uplink signal transmission timing, uplink signal transmission beam, downlink signal transmission beam, pre-compensated time offset, and pre-compensated frequency offset, to perform signal transmission in the target cell. Measure the measurement signal configured in the source cell, and acquire and report channel state information; During the process of performing Radio Resource Control (RRC) reconfiguration based on the handover command, at least one transmission control information of the terminal in the source cell is retained.

[0254] See Figure 12 When the handover device is a network-side device or a component of a network-side device, the handover device 1200 includes: a receiving module 1201, configured to receive a handover request sent by a source base station, wherein the handover request is used to request the terminal to be handed over from the source cell to the target cell; and a sending module 1202, configured to send a handover request response message to the source base station, wherein the handover request response message includes a handover command sent to the terminal, the handover command being used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, or configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0255] In some embodiments, the handover request carries at least one of the following: information about the source cell of the terminal, and transmission control information of the terminal in the source cell.

[0256] In some embodiments, the information of the source cell of the terminal includes at least one of the following: The source cell's identification information; The identification information of the transceiver node serving the terminal in the source cell; The terminal reports the latest CSI information in the source cell; The quality information of the uplink signal measured in the source cell; Beam information; Space receiver RX parameter information; Doppler frequency shift information; Doppler diffusion information; Average latency information; Information spreads with time delay; A reference signal having a predetermined quasi-co-location QCL relationship with communication transmissions of at least one of the target cell and the source cell; Timed information; Configuration information for CSI measurement signals.

[0257] In some embodiments, the transmission control information includes at least one of the following: power control information, beam control information, downlink channel CSI information, and uplink channel quality information.

[0258] In some embodiments, the power control information includes at least one of the following: The first parameter regarding PUSCH transmit power control; The second parameter regarding PUCCH transmit power control; The third parameter regarding SRS transmit power control; A fourth parameter related to the transmit power of PRACH or uplink WUS; Road loss estimation signal.

[0259] In some embodiments, the beam control information includes at least one of the following: The transceiver antenna configuration on the terminal side of the source cell; The base station-side antenna configuration of the source cell; The terminal's downlink service beam; The uplink service beam of the terminal.

[0260] In some embodiments, such as Figure 12 As shown, the device further includes: a processing module 1203, used for at least one of the following: Based on the information of the source cell of the terminal, determine that the source cell and the target cell correspond to the same transceiver node; Based on the information carried in the handover request, it is determined that the terminal is configured to use the terminal's transmission control information in the source cell to perform signal transmission in the target cell.

[0261] In some embodiments, the handover command includes second indication information, which is used to configure the terminal to use the terminal's transmission control information in the source cell to perform signal transmission in the target cell.

[0262] In some embodiments, the second indication information includes at least one of the following: The third indication information is used to instruct the terminal to calculate the transmission power of the target uplink signal in the target cell by using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, wherein the target uplink signal includes at least one of the following: PUSCH, PUCCH, SRS, and PRACH; The fourth instruction information is used to instruct the terminal to send an uplink signal in the target cell using the uplink timing of the source cell; The fifth instruction information is used to instruct the terminal to send an uplink signal in the target cell using the uplink beam of the source cell; The sixth instruction information is used to instruct the terminal to receive downlink signals in the target cell using the downlink beam of the source cell; The seventh instruction information is used to instruct the terminal to transmit signals in the target cell using the pre-compensated frequency offset of the source cell.

[0263] In some embodiments, the third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including at least one of the following: The terminal is instructed to calculate the transmission power of the target PUSCH in the target cell using the cumulative transmission power adjustment amount of the first target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target PUCCH in the target cell using the cumulative transmission power adjustment amount of the second target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target SRS in the target cell by using the cumulative transmission power adjustment amount of the third target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target PRACH in the target cell using the cumulative transmission power adjustment amount of the fourth target power control adjustment state of the source cell.

[0264] In some embodiments, the third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including one of the following: The terminal is instructed to directly use the cumulative transmit power adjustment amount of the target power control adjustment state to calculate the transmit power of the target uplink signal of the terminal in the target cell; The terminal is instructed to calculate the transmission power of the target uplink signal in the target cell based on the first cumulative transmission power adjustment amount obtained from the cumulative transmission power adjustment amount of the target power control adjustment state.

[0265] In some embodiments, the first cumulative transmit power adjustment amount is obtained by one of the following: The first cumulative transmit power adjustment is indicated to be X+Y dB, where X is the cumulative transmit power adjustment in the target power control adjustment state, and Y is the configured offset; The first cumulative transmit power adjustment is indicated as m × Y dB, where X is the cumulative transmit power adjustment of the target power control adjustment state, m is the configured scaling factor, and m is a rational number greater than 0 and less than or equal to 1. When X is within the range of cumulative transmission power adjustment, the first cumulative transmission power adjustment is X dB; or, when X is less than the lower limit of the range of cumulative transmission power adjustment, the first cumulative transmission power adjustment is the lower limit of the range of cumulative transmission power adjustment; or, when X is greater than the upper limit of the initial range of cumulative transmission power adjustment, the first cumulative transmission power adjustment is the upper limit of the range of cumulative transmission power adjustment, wherein the range of cumulative transmission power adjustment is the range indicated by the third indication information.

[0266] See Figure 13When the handover device is a network-side device or a component of a network-side device, the handover device 1300 includes: a receiving module 1301, used to receive measurement results from the terminal regarding the target cell; a sending module 1302, used to send a handover request to the target base station corresponding to the target cell, wherein the handover request is used to request the terminal to be handed over from the source cell to the target cell, and the handover request carries at least one of the following: information of the source cell of the terminal, and transmission control information of the terminal in the source cell; the receiving module 1301 is also used to receive a handover request response message sent by the target base station, wherein the handover request response message includes a handover command sent to the terminal, and the handover command is used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell; the sending module 1302 is also used to send the handover command to the terminal.

[0267] In some embodiments, the information of the source cell of the terminal includes at least one of the following: The source cell's identification information; The source cell uses the identification information of the transmission node serving the terminal; The terminal reports the latest CSI information in the source cell; The quality parameters of the uplink signal measured in the source cell; Beam information; Space receiver RX parameter information; Doppler frequency shift information; Doppler diffusion information; Average latency information; Information spreads with time delay; A reference signal having a predetermined QCL relationship with communication transmissions of at least one of the target cell and the source cell; Timed information; Configuration information for CSI measurement signals.

[0268] In some embodiments, the transmission control information includes at least one of the following: power control information, beam control information, downlink channel CSI information, and uplink channel quality information.

[0269] In some embodiments, the power control information includes at least one of the following: The first parameter regarding PUSCH transmit power control; The second parameter regarding PUCCH transmit power control; The third parameter regarding SRS transmit power control; A fourth parameter related to the transmit power of PRACH or uplink WUS; Road loss estimation signal.

[0270] In some embodiments, the beam control information includes at least one of the following: The transceiver antenna configuration on the terminal side of the source cell; The base station-side antenna configuration of the source cell; The terminal's downlink service beam; The uplink service beam of the terminal.

[0271] In some embodiments, such as Figure 13 As shown, the device may further include: a processing module 1303, configured to obtain neighboring cell information that shares a transceiver node with the source base station cell from the Operation, Maintenance and Management (OAM) server, wherein the neighboring cell information includes at least one of the following: Identification information of neighboring base stations belonging to neighboring cells; The transceiver node TRP identifier shared by the source base station cell and neighboring base station cells; Identification information of neighboring base station cells that share a TRP with the source base station cell.

[0272] The apparatus provided in this application embodiment can achieve... Figures 4 to 10 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0273] like Figure 14 As shown, this application embodiment also provides a communication device 1400, including a processor 1401 and a memory 1402. The memory 1402 stores a program or instructions that can run on the processor 1401. For example, when the communication device 1400 is a terminal, the program or instructions executed by the processor 1401 implement the various steps of the above-described transmission control method embodiment and achieve the same technical effect. When the communication device 1400 is a network-side device, the program or instructions executed by the processor 1401 implement the various steps of the above-described switching method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0274] This application embodiment also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figures 4 to 7 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be... Figure 11 The transmission control device shown. Specifically, Figure 15A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application. The terminal 1500 includes, but is not limited to, at least some of the following components: radio frequency unit 1501, network module 1502, audio output unit 1503, input unit 1504, sensor 1505, display unit 1506, user input unit 1507, interface unit 1508, memory 1509, and processor 1510.

[0275] Those skilled in the art will understand that the terminal 1500 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1510 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 15 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0276] It should be understood that, in this embodiment, the input unit 1504 may include a graphics processor 15041 and a microphone 15042. The graphics processor 15041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1506 may include a display panel 15061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1507 includes a touch panel 15071 and at least one of other input devices 15072. The touch panel 15071 is also called a touch screen. The touch panel 15071 may include a touch detection device and a touch controller. Other input devices 15072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0277] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1501 can transmit it to the processor 1510 for processing; in addition, the radio frequency unit 1501 can send uplink data to the network-side device. Typically, the radio frequency unit 1501 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0278] The memory 1509 can be used to store software programs or instructions, as well as various data. The memory 1509 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1509 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1509 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0279] Processor 1510 may include one or more processing units; optionally, processor 1510 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1510.

[0280] The radio frequency unit 1501 is used to receive a handover command, wherein the handover command is used to instruct the terminal to hand over from the source cell to the target cell; The processor 1510 is configured to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

[0281] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant descriptions of method embodiments 400 to 700 and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0282] This application embodiment also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 8 The steps of the method embodiment shown in Figure 9 are applicable to this network-side device embodiment. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0283] Specifically, embodiments of this application also provide a network-side device, which may be... Figure 12 or Figure 13 The switching device shown. (As shown) Figure 16 As shown, the network-side device 1600 includes: an antenna 1601, a radio frequency (RF) device 1602, a baseband device 1603, a processor 1604, and a memory 1605. The antenna 1601 is connected to the RF device 1602. In the uplink direction, the RF device 1602 receives information through the antenna 1601 and transmits the received information to the baseband device 1603 for processing. In the downlink direction, the baseband device 1603 processes the information to be transmitted and sends it to the RF device 1602. The RF device 1602 processes the received information and transmits it through the antenna 1601.

[0284] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1603, which includes a baseband processor.

[0285] The baseband device 1603 may, for example, include at least one baseband board on which multiple chips are disposed, such as... Figure 16 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 1605 via a bus interface to call the program or instructions in the memory 1605 to execute the network-side device operation shown in the above method embodiment.

[0286] The network-side device may also include a network interface 1606, such as a Common Public Radio Interface (CPRI).

[0287] The radio frequency device 1602 is used for: Receive a handover request sent by the source base station, wherein the handover request is used to request the terminal to be handed over from the source cell to the target cell; A handover request response message is sent to the source base station, wherein the handover request response message includes a handover command sent to the terminal, the handover command being used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell. Alternatively, Radio frequency device 1602 is used for: The receiving terminal receives the measurement results of the target cell; A handover request is sent to the target base station corresponding to the target cell, wherein the handover request is used to request the terminal to be handed over from the source cell to the target cell, and the handover request carries at least one of the following: information of the source cell of the terminal, and transmission control information of the terminal in the source cell; The terminal receives a handover request response message sent by the target base station, wherein the handover request response message includes a handover command sent to the terminal, and the handover command is used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, or configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell; The switching command is sent to the terminal.

[0288] Furthermore, the network-side device 1600 in this embodiment of the application also includes: a program or instructions stored in memory 1605 and executable on processor 164, wherein processor 1604 calls the program or instructions in memory 1605 to execute. Figure 12 or Figure 13 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0289] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described transmission control method embodiments or the various processes of the above-described switching method embodiments, and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0290] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0291] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described transmission control method embodiment or the various processes of the above-described switching method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0292] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0293] This application also provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-described transmission control method embodiments or the various processes of the above-described switching method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0294] This application also provides a wireless communication system, including: a terminal, a source base station and a target base station. The terminal can be used to execute the steps of the transmission control method 400 to 700 as described above. The source base station can be used to execute the steps of the transmission control method 900 as described above. The target base station can be used to execute the steps of the transmission control method 800 as described above.

[0295] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0296] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0297] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A transmission control method, characterized in that, include: The terminal receives a handover command, wherein the handover command is used to instruct the terminal to hand over from the source cell to the target cell; The terminal uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

2. The method according to claim 1, characterized in that, Before the terminal uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell, the method further includes: The terminal determines that the source cell and the target cell correspond to the same transceiver node.

3. The method according to claim 2, characterized in that, The terminal determines that the source cell and the target cell correspond to the same transceiver node, including: Based on the first indication information carried in the handover command, the terminal determines that the source cell and the target cell correspond to the same transceiver node.

4. The method according to any one of claims 1 to 3, characterized in that, The terminal uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell, including: When at least some of the relevant parameters of the uplink power control state of the source cell are the same as at least some of the relevant parameters of the power control state of the target cell, the terminal uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

5. The method according to claim 4, characterized in that, At least some of the relevant parameters of the uplink power control state include at least one of the following: Reference signal information for measuring transmission path loss; The scaling factor for the first uplink signal transmission power is calculated based on transmission path loss. The target received power of the second uplink signal; Relevant parameters used to calculate the target received power density of the third uplink signal; The first uplink signal includes at least one of the following: Physical Uplink Shared Information (PUSCH), Sound Reference Signal (SRS), Physical Uplink Control Channel (PUCCH), and Physical Random Access Channel (PRACH); the second uplink signal includes at least one of the following: PUSCH, SRS, PUCCH, and PRACH; and the third uplink signal includes at least one of the following: PUSCH, SRS, PUCCH, and PRACH.

6. The method according to claim 1, characterized in that, The handover command includes second indication information, which is used to configure the terminal to use the terminal's transmission control information in the source cell to perform signal transmission in the target cell.

7. The method according to claim 6, characterized in that, The terminal uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell, including: Based on the second indication information, the terminal uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

8. The method according to claim 6 or 7, wherein the second indication information includes at least one of the following: The third indication information is used to instruct the terminal to calculate the transmission power of the target uplink signal in the target cell by utilizing the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, wherein... The target uplink signal includes at least one of the following: PUSCH, PUCCH, SRS, and PRACH; The fourth instruction information is used to instruct the terminal to send an uplink signal in the target cell using the uplink timing of the source cell; The fifth instruction information is used to instruct the terminal to send an uplink signal in the target cell using the uplink beam of the source cell; The sixth instruction information is used to instruct the terminal to receive downlink signals in the target cell using the downlink beam of the source cell; The seventh instruction information is used to instruct the terminal to transmit signals in the target cell using the pre-compensated frequency offset of the source cell.

9. The method according to claim 8, characterized in that, The third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including at least one of the following: The terminal is instructed to calculate the transmission power of the target PUSCH in the target cell using the cumulative transmission power adjustment amount of the first target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target PUCCH in the target cell using the cumulative transmission power adjustment amount of the second target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target SRS in the target cell by using the cumulative transmission power adjustment amount of the third target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target PRACH in the target cell using the cumulative transmission power adjustment amount of the fourth target power control adjustment state of the source cell.

10. The method according to claim 8 or 9, characterized in that, The third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including one of the following: The terminal is instructed to directly use the cumulative transmit power adjustment amount of the target power control adjustment state to calculate the transmit power of the target uplink signal of the terminal in the target cell; The terminal is instructed to calculate the transmission power of the target uplink signal in the target cell based on the first cumulative transmission power adjustment amount obtained from the cumulative transmission power adjustment amount of the target power control adjustment state.

11. The method according to claim 10, characterized in that, The first cumulative transmission power adjustment amount is obtained by one of the following: The first cumulative transmit power adjustment is X+Y dB, where X is the cumulative transmit power adjustment in the target power control adjustment state, and Y is the configured offset; The first cumulative transmit power adjustment is m × Y dB, where X is the cumulative transmit power adjustment of the target power control adjustment state, m is the configured scaling factor, and m is a rational number greater than 0 and less than or equal to 1. When X is within the range of cumulative transmit power adjustment, the first cumulative transmit power adjustment is X dB; or, when X is less than the lower limit of the range of cumulative transmit power adjustment, the first cumulative transmit power adjustment is the lower limit of the range of cumulative transmit power adjustment; or, when X is greater than the upper limit of the initial range of cumulative transmit power adjustment, the first cumulative transmit power adjustment is the upper limit of the range of cumulative transmit power adjustment, wherein the range of cumulative transmit power adjustment is the range indicated by the third indication information.

12. The method according to any one of claims 1 to 11, characterized in that, The transmission control information includes at least one of the following: power control information, transmission beam of uplink signal, transmission beam of downlink signal, uplink signal transmission timing, pre-compensation time required for signal transmission, frequency offset required for pre-compensation for signal transmission, channel state information (CSI) required for signal transmission scheduling, and measurement signal for measuring CSI.

13. The method according to claim 12, characterized in that, The terminal uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell, including at least one of the following: During signal transmission in the target cell, the terminal uses the power control information of the source cell to perform uplink power control in the target cell. The terminal uses at least one of the following in the source cell: uplink signal transmission timing, uplink signal transmission beam, downlink signal transmission beam, pre-compensated time offset, and pre-compensated frequency offset to perform signal transmission in the target cell. The terminal measures the measurement signal configured in the source cell, and obtains and reports channel state information; During the process of performing Radio Resource Control (RRC) reconfiguration based on the handover command, the terminal retains at least one transmission control information of the terminal in the source cell.

14. A switching method, characterized in that, include: The target base station receives a handover request sent by the source base station, wherein the handover request is used to request the terminal to be handed over from the source cell to the target cell; The target base station sends a handover request response message to the source base station, wherein the handover request response message includes a handover command sent to the terminal, and the handover command is used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, or configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

15. The method according to claim 14, characterized in that, The handover request carries at least one of the following: information about the source cell of the terminal, and transmission control information of the terminal in the source cell.

16. The method according to claim 15, characterized in that, The information of the source cell of the terminal includes at least one of the following: The source cell's identification information; The identification information of the transceiver node serving the terminal in the source cell; The terminal reports the latest CSI information in the source cell; The quality information of the uplink signal measured in the source cell; Beam information; Space receiver RX parameter information; Doppler frequency shift information; Doppler diffusion information; Average latency information; Information spreads with time delay; A reference signal having a predetermined quasi-co-location QCL relationship with communication transmissions of at least one of the target cell and the source cell; Timed information; Configuration information for CSI measurement signals.

17. The method according to claim 15, characterized in that, The transmission control information includes at least one of the following: power control information, beam control information, downlink channel CSI information, and uplink channel quality information.

18. The method according to claim 17, characterized in that, The power control information includes at least one of the following: The first parameter regarding PUSCH transmit power control; The second parameter regarding PUCCH transmit power control; The third parameter regarding SRS transmit power control; A fourth parameter related to the transmit power of PRACH or uplink WUS; Road loss estimation signal.

19. The method according to claim 17, characterized in that, The beam control information includes at least one of the following: The transceiver antenna configuration on the terminal side of the source cell; The base station-side antenna configuration of the source cell; The terminal's downlink service beam; The uplink service beam of the terminal.

20. The method according to any one of claims 15 to 19, characterized in that, Before the target base station sends a handover request response message to the source base station, the method further includes at least one of the following: The target base station determines the same transceiver node corresponding to the source cell and the target cell based on the information of the source cell of the terminal; Based on the information carried in the handover request, the target base station determines to configure the terminal to use the terminal's transmission control information in the source cell to perform signal transmission in the target cell.

21. The method according to any one of claims 14 to 20, characterized in that, The handover command includes second indication information, which is used to configure the terminal to use the terminal's transmission control information in the source cell to perform signal transmission in the target cell.

22. The method according to claim 21, characterized in that, The second instruction information includes at least one of the following: The third indication information is used to instruct the terminal to calculate the transmission power of the target uplink signal in the target cell by using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, wherein the target uplink signal includes at least one of the following: PUSCH, PUCCH, SRS, and PRACH; The fourth instruction information is used to instruct the terminal to send an uplink signal in the target cell using the uplink timing of the source cell; The fifth instruction information is used to instruct the terminal to send an uplink signal in the target cell using the uplink beam of the source cell; The sixth instruction information is used to instruct the terminal to receive downlink signals in the target cell using the downlink beam of the source cell; The seventh instruction information is used to instruct the terminal to transmit signals in the target cell using the pre-compensated frequency offset of the source cell.

23. The method according to claim 22, characterized in that, The third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including at least one of the following: The terminal is instructed to calculate the transmission power of the target PUSCH in the target cell using the cumulative transmission power adjustment amount of the first target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target PUCCH in the target cell using the cumulative transmission power adjustment amount of the second target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target SRS in the target cell by using the cumulative transmission power adjustment amount of the third target power control adjustment state of the source cell; The terminal is instructed to calculate the transmission power of the target PRACH in the target cell using the cumulative transmission power adjustment amount of the fourth target power control adjustment state of the source cell.

24. The method according to claim 22 or 23, characterized in that, The third indication information instructs the terminal to calculate the transmission power of the target uplink signal in the target cell using the cumulative transmission power adjustment amount of the target power control adjustment state of the source cell, including one of the following: The terminal is instructed to directly use the cumulative transmit power adjustment amount of the target power control adjustment state to calculate the transmit power of the target uplink signal of the terminal in the target cell; The terminal is instructed to calculate the transmission power of the target uplink signal in the target cell based on the first cumulative transmission power adjustment amount obtained from the cumulative transmission power adjustment amount of the target power control adjustment state.

25. The method according to claim 24, characterized in that, The first cumulative transmission power adjustment amount is obtained by one of the following: The first cumulative transmit power adjustment is indicated to be X+Y dB, where X is the cumulative transmit power adjustment in the target power control adjustment state, and Y is the configured offset; The first cumulative transmit power adjustment is indicated as m × Y dB, where X is the cumulative transmit power adjustment of the target power control adjustment state, m is the configured scaling factor, and m is a rational number greater than 0 and less than or equal to 1. When X is within the range of cumulative transmit power adjustment, the first cumulative transmit power adjustment is X dB; or, when X is less than the lower limit of the range of cumulative transmit power adjustment, the first cumulative transmit power adjustment is the lower limit of the range of cumulative transmit power adjustment; or, when X is greater than the upper limit of the range of first cumulative transmit power adjustment, the first cumulative transmit power adjustment is the upper limit of the range of cumulative transmit power adjustment, wherein the range of cumulative transmit power adjustment is the range indicated by the third indication information.

26. A switching method, characterized in that, include: The source base station receives the measurement results of the target cell from the terminal; The source base station sends a handover request to the target base station corresponding to the target cell, wherein the handover request is used to request the terminal to be handed over from the source cell to the target cell, and the handover request carries at least one of the following: information of the source cell of the terminal, and transmission control information of the terminal in the source cell; The source base station receives a handover request response message sent by the target base station, wherein the handover request response message includes a handover command sent to the terminal, and the handover command is used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, or configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell; The source base station sends the handover command to the terminal.

27. The method according to claim 26, characterized in that, The information of the source cell of the terminal includes at least one of the following: The source cell's identification information; The source cell uses the identification information of the transmission node serving the terminal; The terminal reports the latest CSI information in the source cell; The quality parameters of the uplink signal measured in the source cell; Beam information; Space receiver RX parameter information; Doppler frequency shift information; Doppler diffusion information; Average latency information; Information spreads with time delay; A reference signal having a predetermined QCL relationship with communication transmissions of at least one of the target cell and the source cell; Timed information; Configuration information for CSI measurement signals.

28. The method according to claim 26, characterized in that, The transmission control information includes at least one of the following: power control information, beam control information, downlink channel CSI information, and uplink channel quality information.

29. The method according to claim 28, characterized in that, The power control information includes at least one of the following: The first parameter regarding PUSCH transmit power control; The second parameter regarding PUCCH transmit power control; The third parameter regarding SRS transmit power control; A fourth parameter related to the transmit power of PRACH or uplink WUS; Road loss estimation signal.

30. The method according to claim 28, characterized in that, The beam control information includes at least one of the following: The transceiver antenna configuration on the terminal side of the source cell; The base station-side antenna configuration of the source cell; The terminal's downlink service beam; The uplink service beam of the terminal.

31. The method according to any one of claims 26 to 30, characterized in that, Before the source base station sends a handover request to the target base station corresponding to the target cell, the method further includes: The source base station obtains neighboring cell information that shares a transceiver node with the source base station cell from the Operation, Maintenance and Management (OAM) server, wherein the neighboring cell information includes at least one of the following: Identification information of neighboring base stations belonging to neighboring cells; The transceiver node TRP identifier shared by the source base station cell and neighboring base station cells; Identification information of neighboring base station cells that share a TRP with the source base station cell.

32. A transmission control device, characterized in that, include: A receiving module is used to receive a handover command, wherein the handover command is used to instruct the terminal to hand over from the source cell to the target cell; The processing module is used to execute signal transmission in the target cell using the transmission control information of the terminal in the source cell.

33. The apparatus according to claim 32, characterized in that, The processing module is also used to determine that the source cell and the target cell correspond to the same transceiver node.

34. The apparatus according to claim 33, characterized in that, The processing module determines that the source cell and the target cell have the same transceiver node, including: determining the source cell and the target cell have the same transceiver node based on the first indication information carried in the handover command.

35. The apparatus according to any one of claims 32 to 34, characterized in that, The processing module uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell, including: When at least some of the relevant parameters of the uplink power control state of the source cell are the same as at least some of the relevant parameters of the power control state of the target cell, the terminal uses the transmission control information of the source cell to perform signal transmission in the target cell.

36. The apparatus according to claim 32, characterized in that, The handover command includes second indication information, which is used to configure the terminal to use the transmission control information in the source cell to perform signal transmission in the target cell; The processing module uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell, including: based on the second indication information, using the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

37. The apparatus according to any one of claims 32 to 36, characterized in that, The processing module uses the transmission control information of the terminal in the source cell to perform signal transmission in the target cell, including at least one of the following: During signal transmission in the target cell, the terminal uses the power control information in the source cell to perform uplink power control in the target cell. Using the terminal, at least one of the following is used in the source cell: uplink signal transmission timing, uplink signal transmission beam, downlink signal transmission beam, pre-compensated time offset, and pre-compensated frequency offset, to perform signal transmission in the target cell. Measure the measurement signal configured in the source cell, and acquire and report channel state information; During the process of performing Radio Resource Control (RRC) reconfiguration based on the handover command, at least one transmission control information of the terminal in the source cell is retained.

38. A switching device, characterized in that, include: A receiving module is used to receive a handover request sent by a source base station, wherein the handover request is used to request the terminal to be handed over from the source cell to the target cell; The sending module is configured to send a handover request response message to the source base station, wherein the handover request response message includes a handover command sent to the terminal, and the handover command is used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, or configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell.

39. The method according to claim 38, characterized in that, Also includes: The processing module is used for at least one of the following: Based on the information of the source cell of the terminal, determine that the source cell and the target cell correspond to the same transceiver node; Based on the information carried in the handover request, it is determined that the terminal is configured to use the terminal's transmission control information in the source cell to perform signal transmission in the target cell.

40. A switching device, characterized in that, include: The receiving module is used to receive the measurement results of the terminal regarding the target cell; The sending module is used to send a handover request to the target base station corresponding to the target cell, wherein the handover request is used to request the terminal to be handed over from the source cell to the target cell, and the handover request carries at least one of the following: information of the source cell of the terminal, and transmission control information of the terminal in the source cell; The receiving module is further configured to receive a handover request response message sent by the target base station, wherein the handover request response message includes a handover command sent to the terminal, and the handover command is used for at least one of the following: instructing the source cell and the target cell to have the same transceiver node, or configuring the terminal to use the transmission control information of the terminal in the source cell to perform signal transmission in the target cell; The sending module is also used to send the switching command to the terminal.

41. The apparatus according to claim 40, characterized in that, Also includes: The processing module is configured to obtain neighboring cell information that shares a transceiver node with the source base station cell from the Operation, Maintenance and Management (OAM) server, wherein the neighboring cell information includes at least one of the following: Identification information of neighboring base stations belonging to neighboring cells; The transceiver node TRP identifier shared by the source base station cell and neighboring base station cells; Identification information of neighboring base station cells that share a TRP with the source base station cell.

42. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the transmission control method as described in any one of claims 1 to 13.

43. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the switching method as described in any one of claims 14 to 31.

44. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the transmission control method as described in any one of claims 1 to 13, or the steps of the switching method as described in any one of claims 14 to 31.

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