Communication method and device and storage medium

Abstract

The invention provides a communication method and device and a storage medium, and relates to the technical field of communication. The method comprises the following steps: a service cell sends CSI report configuration information and CSI resource configuration information of at least one candidate cell to UE; the serving cell sends indication information to the UE, wherein the indication information indicates to report the first CSI report; and the UE sends the first CSI report to the target cell. According to the invention, the target cell can schedule the UE to carry out data transmission by adopting a proper transmission mode based on the first CSI report reported by the UE, thereby avoiding scheduling the UE to carry out data transmission by adopting a single-flow transmission mode, and improving the efficiency of data transmission.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and in particular to a communication method, device and storage medium. BACKGROUND

[0002] In some cases, for example, when the cell environment where the user equipment (UE) is currently located deteriorates, the UE needs to be handed over.

[0003] In the related art, the cell handover can be performed through a layer 1 or layer 2 triggered mobility (LTM) process. In the LTM process, the network device provides the UE with configuration information of one or more candidate cells based on the measurement report (for example, a radio resource management (RRM) measurement report or a layer 3 measurement report) reported by the UE; after the UE receives the configuration information, the UE sends a measurement report (for example, a layer 1 measurement report) to the network device, the network device determines to trigger the LTM handover based on the measurement report reported by the UE, and sends an LTM cell handover command to the UE, and the UE switches to a target cell based on the indication in the handover command.

[0004] After the completion of the LTM process, due to the lack of channel state information (CSI) information of the UE, the target cell can only schedule the UE for data transmission in a default single-stream transmission mode, resulting in low efficiency of data transmission. SUMMARY

[0005] The present application relates to a communication method, device and storage medium, and provides a scheme for improving the efficiency of data transmission.

[0006] In a first aspect, an embodiment of the present application provides a communication method, comprising:

[0007] receiving CSI report configuration information and CSI resource configuration information of at least one candidate cell sent by a serving cell;

[0008] receiving indication information sent by the serving cell, the indication information indicating to report a first CSI report, the first CSI report being used to assist a target cell in scheduling, the target cell being a cell in the at least one candidate cell;

[0009] sending the first CSI report to the target cell.

[0010] In a possible implementation, the receiving the indication information sent by the serving cell comprises:

[0011] receiving a cell handover command sent by the serving cell, wherein the cell handover command comprises the indication information.

[0012] In a possible implementation, the QCL information of the CSI resource associated with the first CSI report is indicated by a TCI state identifier in the cell handover command.

[0013] In a possible implementation, the receiving the indication information sent by the serving cell comprises:

[0014] receiving a first DCI sent by the serving cell, wherein the first DCI comprises the indication information.

[0015] In a possible implementation, the receiving the indication information sent by the serving cell comprises:

[0016] receiving a first MAC CE sent by the serving cell, wherein the first MAC CE comprises the indication information.

[0017] In a possible implementation, the sending the first CSI report to the target cell comprises:

[0018] sending the first CSI report to the target cell on a first uplink resource, wherein the first uplink resource comprises any one of the following:

[0019] a PUCCH resource or a PUSCH resource comprised in CSI report configuration information associated with the first CSI report; or

[0020] a PUCCH resource or a PUSCH resource indicated by the cell handover command; or

[0021] a PUSCH resource scheduled by a second DCI sent by the target cell.

[0022] In a possible implementation, the sending the first CSI report to the target cell comprises:

[0023] sending the first CSI report to the target cell through a message 3 in a random access procedure in the cell handover procedure.

[0024] In a possible implementation, the sending the first CSI report to the target cell comprises:

[0025] sending the first CSI report to the target cell on a PUSCH resource scheduled by the first DCI.

[0026] In a possible implementation, the sending the first CSI report to the target cell comprises:

[0027] sending the first CSI report to the target cell on the PUCCH resource or the PUSCH resource indicated by the first MAC CE.

[0028] In a possible implementation, the first CSI report occupies a CSI processing unit (CPU) of the target cell and / or a CPU of the serving cell.

[0029] In a possible implementation, the occupation period of the CPU of the target cell starts from a first symbol and ends when the sending of the first CSI report is completed.

[0030] The first symbol is the first symbol in symbols occupied by a latest CSI resource of CSI reference resources, and a time domain position of the CSI reference resources is before a sending time of the first CSI report.

[0031] In a possible implementation, the occupation period of the CPU of the target cell starts from when the cell switching command takes effect and ends when the sending of the first CSI report is completed.

[0032] In a possible implementation, the occupation period of the CPU of the target cell starts from when the cell switching is completed and ends when the sending of the first CSI report is completed.

[0033] In a possible implementation, the occupation period of the CPU of the serving cell starts from a first symbol and ends when the cell switching is completed.

[0034] The first symbol is the first symbol in symbols occupied by a latest CSI resource of CSI reference resources, and a time domain position of the CSI reference resources is before a sending time of the first CSI report.

[0035] In a second aspect, an embodiment of the present application provides a communication method, comprising:

[0036] sending CSI report configuration information and CSI resource configuration information of at least one candidate cell;

[0037] sending indication information, the indication information indicating reporting a first CSI report, the first CSI report being used for assisting a target cell in scheduling, the target cell being a cell in the at least one candidate cell.

[0038] In a possible implementation, the sending indication information comprises:

[0039] sending a cell switching command, the cell switching command containing the indication information.

[0040] In a possible implementation, the QCL information of the CSI resource associated with the first CSI report is indicated by a TCI state identifier in the cell switching command.

[0041] In a possible implementation, the sending the indication information comprises:

[0042] sending a first DCI, wherein the indication information is included in the first DCI.

[0043] In a possible implementation, the sending the indication information comprises:

[0044] sending a first MAC CE, wherein the indication information is included in the first MAC CE.

[0045] In a third aspect, an embodiment of the present application provides a communication apparatus, including a receiving module and a sending module, wherein,

[0046] The receiving module is configured to receive CSI report configuration information and CSI resource configuration information of at least one candidate cell sent by a serving cell.

[0047] The receiving module is further configured to receive indication information sent by the serving cell, wherein the indication information indicates reporting a first CSI report, and the first CSI report is used for assisting a target cell in scheduling, and the target cell is a cell in the at least one candidate cell.

[0048] The sending module is configured to send the first CSI report to the target cell.

[0049] In a fourth aspect, an embodiment of the present application provides a communication apparatus, including a sending module, wherein,

[0050] The sending module is configured to send channel state information (CSI) report configuration information and CSI resource configuration information of at least one candidate cell.

[0051] The sending module is further configured to send indication information, wherein the indication information indicates reporting a first CSI report, and the first CSI report is used for assisting a target cell in scheduling, and the target cell is a cell in the at least one candidate cell.

[0052] In a fifth aspect, an embodiment of the present application provides a communication apparatus, including a processor and a memory.

[0053] The memory stores computer-executed instructions.

[0054] The processor executes the computer-executed instructions stored in the memory, so as to implement the method in the first aspect or the second aspect.

[0055] In a sixth aspect, an embodiment of the present application provides a computer readable storage medium, wherein the computer readable storage medium stores computer execution instructions, and the computer execution instructions are used for implementing the method in the first aspect or the second aspect when executed by a processor.

[0056] In a seventh aspect, an embodiment of the present application provides a computer program product, comprising a computer program, and the computer program is used for implementing the method in the first aspect or the second aspect when executed by a processor.

[0057] In an eighth aspect, an embodiment of the present application provides a chip, wherein the chip stores a computer program, and the computer program is used for implementing the method in the first aspect or the second aspect when executed by the chip.

[0058] In a possible implementation, the chip is a chip in a chip module.

[0059] The embodiment of the present application provides a communication method, device and storage medium. In the method, a serving cell sends CSI report configuration information and CSI resource configuration information of at least one candidate cell to a UE; the serving cell sends indication information to the UE, and the indication information indicates that a first CSI report is reported; and the UE performs CSI measurement on a target cell according to the indication information and the CSI report configuration information and the CSI resource configuration information of the at least one candidate cell, obtains the first CSI report, and sends the first CSI report to the target cell. The target cell can accurately determine the channel state between the target cell and the UE based on the first CSI report reported by the UE, and then can schedule the UE to perform data transmission in a suitable transmission mode, thereby avoiding scheduling the UE to perform data transmission in a single-stream transmission mode, and improving the efficiency of data transmission. BRIEF DESCRIPTION OF DRAWINGS

[0060] Figure 1 FIG. 1 is a flowchart of an LTM process in the related art;

[0061] Figure 2 FIG. 2 is a structure diagram of a cell handover command MAC CE in the related art;

[0062] Figure 3 FIG. 3 is a flowchart of a communication method provided by an embodiment of the present application Figure 1 ;

[0063] Figure 4 FIG. 4 is a flowchart of a communication method provided by an embodiment of the present application Figure 2 ;

[0064] Figure 5 FIG. 5 is a flowchart of a communication method provided by an embodiment of the present application Figure 3 ;

[0065] Figure 6 Flowchart of the communication method provided by the embodiment of the present application Figure 4

[0066] Figure 7 Flowchart of the communication method provided by the embodiment of the present application Figure 5

[0067] Figure 8 Position diagram between the first symbol and the CSI reference resource and the CSI resource provided by the embodiment of the present application

[0068] Figure 9 Structural diagram of the communication device 10 provided by the embodiment of the present application

[0069] Figure 10 Structural diagram of the communication device 20 provided by the embodiment of the present application

[0070] Figure 11 Structural diagram of the communication device 30 provided by the embodiment of the present application DETAILED DESCRIPTION

[0071] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0072] In the embodiments of the present application, the term “at least one” refers to one or more. “Multiple” refers to two or more. “At least one of the following” or similar expressions refers to any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, or c can include one element or multiple elements.

[0073] In the embodiments of the present application, the term “and / or” is a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. The character “ / ” generally represents that the associated objects before and after it are in an “or” relationship.

[0074] ​​The first, second, and the like appearing in the embodiments of the present application are only for indicating and distinguishing the description objects, and do not have sequence, and do not represent special limitation of the number of the objects in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application. For example, the first downlink control information (DCI), the second DCI, and the like are only used for distinguishing different DCIs, and do not represent different priorities or importance degrees of the two DCIs.

[0075] In the embodiments of the present application, "exemplary", "in some embodiments", "in other embodiments", and the like are used to represent an example, illustration, or description. Any embodiment or design scheme described as "exemplary" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. In fact, the word "exemplary" is intended to present the concept in a specific manner.

[0076] The technical solutions provided by the embodiments of the present application can be applied to various systems. The applicable systems can include, but are not limited to, a narrow band-internet of things (NB-IoT) system, a wideband code division multiple access (WCDMA) system, a code division multiple access 2000 (CDMA2000) system, a time division-synchronization code division multiple access (TDSCDMA) system, a long term evolution (LTE) system, a fifth generation mobile communication system or a possible sixth generation, seventh generation mobile communication system, a vehicle-mounted wireless short-range communication system, and a future mobile communication system.

[0077] The UE involved in the embodiments of this application can also be referred to as a terminal, including various forms of access terminals, user units, user stations, mobile stations, mobile stations (MS), remote stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user equipment. The UE can also be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal in a 5G network, or terminal in a future evolved public land mobile network (PLMN), etc., and the embodiments of this application are not limited thereto.

[0078] The network devices involved in this application embodiment can be access network devices, including base stations, which may include multiple cells providing services to UEs. Depending on the specific application, a base station may also be called an access point, or a device in the access network that communicates with a wireless terminal through one or more sectors on the air interface, or other names. For example, the network devices involved in this application embodiment may be evolved network devices (eNB or e-NodeB) in LTE systems, 5G base stations (gNB) in 5G network architectures (next generation systems), or home evolved Node B (HeNB), relay nodes, femto, pico, network testing equipment, etc., and this application embodiment is not limited in this regard. In some network structures, network devices may include CUs and DUs, and CUs and DUs may also be geographically separated.

[0079] The relevant technologies involved in this application will be introduced below.

[0080] During LTM, the network side can use Layer 2 signaling (medium access control (MAC) control element (CE)) to instruct the UE to perform cell handover based on the Layer 1 measurement results reported by the UE, so as to reduce handover latency.

[0081] like Figure 1 As shown, the LTM process consists of the following four parts:

[0082] (1) LTM preparation: UE sends a mobility measurement report to the base station, and the base station provides the UE with configuration information of one or more LTM candidate cells based on the measurement report.

[0083] (2) Early synchronization: The UE performs downlink synchronization on the LTM candidate cell before receiving the cell switch command, and determines the timing advance (TA) of the LTM candidate cell by measurement or sends a preamble message to the base station to complete the uplink synchronization.

[0084] (3) LTM cell handover execution: After the UE receives the configuration information of the LTM candidate cell, it continues to perform beam measurement and reporting of the LTM candidate cell. In addition, when the UE receives the cell switch command sent by the base station, the UE performs cell handover based on random access or cell handover without random access according to the content of the cell switch command. The cell switch command contains the target cell configuration identifier (ID) (target config ID), the uplink and downlink beam indication corresponding to the target cell (timing advance command) (TCI state ID, uplink (UL) TCI state ID), and the uplink resource indication for cell handover based on random access (random access preamble index, synchronization signal / physical broadcast channel (SS / PBCH) index, physical random access channel (PRACH) mask index), the specific format is as shown in Figure 2

[0085] (4) LTM cell handover completion: After the UE completes the cell handover, it sends a cell handover completion message to the base station. For cell handover based on random access, the cell handover is considered complete after the random access is completed; for cell handover without random access, the cell handover is considered complete when the UE receives a physical downlink control channel (PDCCH) scheduling new uplink / downlink transmission.

[0086] After the completion of the LTM process, due to the lack of CSI information of the UE, the target cell can only use the default single-stream transmission mode to schedule the UE for data transmission, resulting in low efficiency of data transmission. ​

[0087] To solve the above technical problems, the present application provides a communication method, when a serving cell instructs a UE to measure and report a first CSI report, the UE can perform CSI measurement on a target cell based on the CSI report configuration information and CSI resource configuration information of at least one candidate cell sent by the serving cell, obtain the first CSI report, and send the first CSI report to the target cell. Based on the first CSI report reported by the UE, the target cell can schedule the UE for data transmission in a suitable transmission mode, avoiding scheduling the UE for data transmission in a single-stream transmission mode, thereby improving the efficiency of data transmission.

[0088] In the following, the technical solutions shown in the present application will be described in detail through specific embodiments. It should be noted that the following embodiments can exist independently, or can be combined with each other. For the same or similar content, it will not be repeated in different embodiments.

[0089] Figure 3 Flowchart of the communication method provided by the embodiment of the present application Figure 1 As shown in Figure 3 , the method comprises:

[0090] S301, the serving cell sends the UE CSI report configuration information and CSI resource configuration information of at least one candidate cell.

[0091] In other words, the UE receives the CSI report configuration information and CSI resource configuration information of at least one candidate cell sent by the serving cell.

[0092] The "serving cell sends information, data, message, or signaling to UE" can mean that the network device (hereinafter referred to as first network device) to which the serving cell belongs sends information, data, message, or signaling to the UE, that is, "the serving cell sends information, data, message, or signaling to UE" can also be explained as the first network device sends information, data, message, or signaling to the UE. "UE receives information, data, message, or signaling sent by the serving cell" can mean that the UE receives the information, data, message, or signaling sent by the first network device in the serving cell, that is, "UE receives information, data, message, or signaling sent by the serving cell" can be explained as the UE receives the information, data, message, or signaling sent by the first network device.

[0093] The first network device can include multiple cells, and the cell that provides service for the UE in the multiple cells can be referred to as the serving cell.

[0094] The CSI reporting configuration information can include the content and reporting manner of the CSI reporting. The content of the CSI reporting can include at least one of the following CSI parameters: channel quality indicator (CQI), precoding matrix indicator (PMI), or rank indicator (RI). The reporting manner is periodic reporting or aperiodic reporting.

[0095] The CSI resource configuration information can include the resource used for measuring the CSI, for example, the resource used for measuring the CSI can include at least one of the following: time domain resource, frequency domain resource, or space domain resource for transmitting a CSI reference signal (RS); and can also include the structure of the CSI-RS.

[0096] One candidate cell can correspond to one CSI reporting configuration information and one CSI resource configuration information, that is, the serving cell can configure one CSI reporting configuration information and one CSI resource configuration information for one candidate cell. One candidate cell can also correspond to multiple CSI reporting configuration information and multiple CSI resource configuration information, that is, the serving cell can configure multiple CSI reporting configuration information and multiple CSI resource configuration information for one candidate cell. The configuration of the serving cell for the candidate cell means that the network device to which the serving cell belongs configures the candidate cell.

[0097] The serving cell can send the CSI reporting configuration information and the CSI resource configuration information of at least one candidate cell to the UE in the LTM preparation process.

[0098] In the following, the configuration positions of the CSI reporting configuration information and the CSI resource configuration information of each candidate cell are described in the following two ways.

[0099] Method 1: One or more CSI reporting configuration information and CSI resource configuration information of each candidate cell are configured in the CSI candidate configuration of the candidate cell.

[0100] Each CSI reporting configuration information is associated with one CSI resource configuration information. For example, each CSI reporting configuration information can carry an identifier of one CSI resource configuration information; or each CSI reporting configuration information can carry a parameter used to indicate one CSI resource configuration information. Further, each CSI reporting configuration information can be associated with one CSI interference measurement (IM) resource. For example, each CSI reporting configuration information can carry an identifier of one CSI-IM resource; or each CSI reporting configuration information can carry a parameter used to indicate one CSI-IM resource.

[0101] Option 2: The CSI reporting configuration information and the CSI resource configuration information of at least one candidate cell are configured in the CSI measurement configuration of the serving cell.

[0102] Each CSI reporting configuration information is associated with one CSI resource configuration information, and the CSI-RS resource included in each CSI resource configuration information is the resource of the same candidate cell. Further, each CSI reporting configuration information can be associated with one CSI-IM resource.

[0103] In the embodiments of the present application, the CSI reporting configuration information can also be referred to as LTM CSI reporting configuration, the CSI resource configuration information can also be referred to as LTM CSI resource configuration, and the CSI-IM resource can also be referred to as LTM CSI-IM resource (ltm-csi-IM-resources for interference). The present application does not limit the specific names of various configuration information.

[0104] S302: The serving cell sends indication information to the UE, indicating to report the first CSI report.

[0105] In other words, the UE receives the indication information sent by the serving cell.

[0106] The serving cell can send the indication information to the UE in the case of determining the target cell.

[0107] The target cell is a cell in the at least one candidate cell, and further, the target cell can be the cell indicated in the cell handover command. That is, the target cell can be the cell to be switched to the serving cell.

[0108] The first CSI report is used to assist the target cell in scheduling. That is, based on the first CSI report, the target cell can allocate appropriate resources, modulation and coding scheme (MCS), etc. to the UE.

[0109] After receiving the indication information, the UE can perform CSI measurement and generation of the first CSI report based on the indication information. Specifically, the UE can perform CSI measurement on the target cell based on the CSI resource configuration information of the target cell, and generate the first CSI report based on the CSI report configuration information of the target cell. Then, S303 is performed.

[0110] S303, the UE sends the first CSI report to the target cell.

[0111] In other words, the target cell receives the first CSI report sent by the UE.

[0112] The "UE sends the first CSI report to the target cell" can mean that the UE sends the first CSI report to a network device (hereinafter referred to as a second network device) to which the target cell belongs; that is, the "UE sends the first CSI report to the target cell" can be interpreted as the UE sending the first CSI report to the second network device.

[0113] The first network device and the second network device can be the same network device, or can be different network devices.

[0114] The first CSI report can include at least one CSI parameter between the UE and the serving cell, such as CQI, PMI, or RI. After receiving the first CSI report, the serving cell can accurately determine the channel state between the target cell and the UE based on the first CSI report, and then can schedule the UE for data transmission in a suitable transmission mode (i.e., the target cell can allocate appropriate resources, MCS, etc. to the terminal to make the terminal perform data transmission with the target cell on appropriate resources using appropriate MCS), avoiding scheduling the UE for data transmission only in a single-stream transmission mode, and improving the efficiency of data transmission.

[0115] In the above embodiment, the serving cell sends the indication information to the UE in the following several ways. Figure 3 Based on the above embodiment, the following describes how the serving cell sends the indication information in the following several ways.

[0116] Indication method 1: the serving cell sends a cell switching command to the UE, and the cell switching command contains the indication information.

[0117] In other words, the UE receives the cell switching command sent by the serving cell, and the cell switching command contains the indication information.

[0118] In the case where the serving cell is configured with one CSI report configuration information, the length of the indication information can be 1 bit. When the value of the bit is 1, it can indicate that the CSI report (i.e., the first CSI report) corresponding to the CSI report configuration information is reported; when the value of the bit is 0, it can indicate that the CSI report corresponding to the CSI report configuration information is not reported; and vice versa.

[0119] In the case that the serving cell configures multiple CSI reporting configuration information, the length of the indication information can be multiple bits.

[0120] For example, if the serving cell configures 3 CSI reporting configuration information, which are CSI reporting configuration information 1, CSI reporting configuration information 2 and CSI reporting configuration information 3 respectively; the length of the indication information can be 3 bits, 1 bit can correspond to one CSI reporting configuration information; if the 1st bit corresponds to the CSI reporting configuration information 1, the 2nd bit corresponds to the CSI reporting configuration information 2, and the 3rd bit corresponds to the CSI reporting configuration information 3, when the indication information is 010, it means that the CSI report corresponding to the CSI reporting configuration information 2 (i.e. the first CSI report) is reported.

[0121] In a possible implementation, the quasi co-location (QCL) information of the CSI resource associated with the first CSI report is indicated by the TCI state identifier in the cell switching command. That is, the CSI resource associated with the first CSI report can be transmitted by the beam indicated by the TCI state identifier in the cell switching command.

[0122] The cell switching command can also be referred to as an LTM cell switching command.

[0123] The indication method 2 is that the serving cell sends a first DCI to the UE, and the first DCI contains the indication information.

[0124] In other words, the UE receives the first DCI sent by the serving cell, and the first DCI contains the indication information.

[0125] The indication information can be carried in the CSI request field of the first DCI.

[0126] The first DCI can be sent before the cell switching command or after the cell switching command.

[0127] The indication method 3 is that the serving cell sends a first MAC CE to the UE, and the first MAC CE contains the indication information.

[0128] In other words, the UE receives the first MAC CE sent by the serving cell, and the first MAC CE contains the indication information.

[0129] The first MAC CE can be sent before the cell switching command or after the cell switching command.

[0130] After the serving cell determines the target cell, the serving cell can send the indication information to the UE, so that the UE can timely perform CSI measurement and generate the first CSI report on the target cell during the LTM cell switching execution process.

[0131] It should be noted that the indication information in the embodiments of the present application can also be referred to as trigger information, determination information, etc. The present application does not limit the specific name of the information. As long as the function of the information is the same as the function of the indication information in the present application, the information can be considered equivalent to the indication information in the present application.

[0132] On the basis of the above, the following describes how the UE sends the first CSI report to the target cell after generating the first CSI report through the following reporting methods.

[0133] Reporting method 1: the UE sends the first CSI report to the target cell on the first uplink resource.

[0134] The first resource can include any one of the following:

[0135] (1) The physical uplink control channel (PUCCH) resource or the physical uplink shared channel (PUSCH) resource contained in the CSI report configuration information associated with the first CSI report.

[0136] That is, the CSI report configuration information not only contains the corresponding content in S301, but also contains the PUCCH resource or the PUSCH resource used to report the CSI report.

[0137] The CSI report configuration information associated with the first CSI report can also be referred to as the CSI report configuration information corresponding to the first CSI report. For example, if the CSI report configuration information 1 is the CSI report configuration information of cell 1, the UE can generate the CSI report of cell 1 based on the CSI report configuration information 1, and the CSI report configuration information 1 can be referred to as the CSI report configuration information associated with the CSI report of cell 1.

[0138] (2) The PUCCH resource or the PUSCH resource indicated by the cell handover command.

[0139] (3) The PUSCH resource scheduled by the second DCI sent by the target cell.

[0140] The target cell can send the second DCI to the UE after the completion of the LTM cell handover.

[0141] Further, the CSI request field in the second DCI can indicate the UE to report the first CSI report.

[0142] Reporting method 2: the UE sends the first CSI report to the target cell through the message 3 in the random access process in the cell handover execution process.

[0143] Reporting method 3: The UE sends the first CSI report to the target cell on the PUSCH resource scheduled by the first DCI.

[0144] The first DCI is sent by the serving cell, instructing the UE to perform CSI measurements of the target cell and report the first CSI report.

[0145] Reporting method 4: The UE sends the first CSI report to the target cell on the PUCCH or PUSCH resource indicated by the first MAC CE.

[0146] The first MAC CE is sent by the serving cell, instructing the UE to perform CSI measurements of the target cell and report the first CSI report.

[0147] Based on the above, several specific examples are given below to illustrate the scheme of this application.

[0148] Figure 4 Flowchart of the communication method provided in the embodiments of this application Figure 2 .like Figure 4 As shown, the method includes:

[0149] S401. The serving cell sends at least one candidate cell's CSI report configuration information and CSI resource configuration information to the UE.

[0150] It should be noted that the execution process of S401 can be found in the execution process of S301, and will not be repeated here.

[0151] S402. The serving cell sends a cell handover command to the UE. The cell handover command contains indication information, indicating that the first CSI report should be reported.

[0152] It should be noted that the execution process of S402 can refer to S302 and the relevant content in the aforementioned instruction method 1, and will not be repeated here.

[0153] S403, The UE sends the first CSI report to the target cell on the first uplink resource.

[0154] It should be noted that the execution process of S403 can refer to the relevant content in the aforementioned reporting method 1, and will not be repeated here.

[0155] Figure 4 The beneficial effects of the illustrated embodiments and Figure 3 The beneficial effects of the embodiments shown are the same, and will not be repeated here.

[0156] Figure 5 Flowchart of the communication method provided in the embodiments of this application Figure 3 .like Figure 5 As shown, the method includes:

[0157] S501, the serving cell sends the CSI report configuration information and the CSI resource configuration information of at least one candidate cell to the UE.

[0158] It should be noted that the execution process of S501 can refer to the execution process of S301, which will not be repeated here.

[0159] S502, the serving cell sends a cell switching command to the UE, and the cell switching command contains indication information indicating to report the first CSI report.

[0160] It should be noted that the execution process of S502 can refer to the related content in S302 and the aforementioned indication mode 1, which will not be repeated here.

[0161] S503, the UE sends the first CSI report to the target cell through the message 3 in the random access process in the cell switching execution process.

[0162] Figure 5 The beneficial effects of the embodiments shown are the same as those of the embodiments shown Figure 3 The beneficial effects of the embodiments shown are the same as those of the embodiments shown

[0163] Figure 6 The flow of the communication method provided by the embodiments of the present application is shown in Figure 4 . As Figure 6 shown, the method comprises:

[0164] S601, the serving cell sends the CSI report configuration information and the CSI resource configuration information of at least one candidate cell to the UE.

[0165] It should be noted that the execution process of S601 can refer to the execution process of S301, which will not be repeated here.

[0166] S602, the serving cell sends the first DCI to the UE, and the first DCI contains indication information indicating to report the first CSI report.

[0167] It should be noted that the execution process of S602 can refer to the related content in S302 and the aforementioned indication mode 2, which will not be repeated here.

[0168] S603, the UE sends the first CSI report to the target cell on the PUSCH resource scheduled by the first DCI.

[0169] Figure 6 The beneficial effects of the embodiments shown are the same as those of the embodiments shown Figure 3 The beneficial effects of the embodiments shown are the same as those of the embodiments shown

[0170] Figure 7Flow of the communication method provided for the embodiments of the present application Figure 5 As shown in Figure 7 , the method comprises:

[0171] S701. The serving cell sends, to the UE, CSI reporting configuration information and CSI resource configuration information of at least one candidate cell.

[0172] It should be noted that the execution process of S701 can refer to the execution process of S301, which will not be repeated here.

[0173] S702. The serving cell sends, to the UE, a first MAC CE containing indication information indicating to report a first CSI report.

[0174] It should be noted that the execution process of S702 can refer to the related content in S302 and the aforementioned indication mode 3, which will not be repeated here.

[0175] S703. The UE sends, to the target cell, the first CSI report on the PUCCH resource or the PUSCH resource indicated by the first MAC CE.

[0176] Figure 7 The beneficial effects of the embodiments shown in Figure 3 are the same as those of the embodiments shown in , which will not be repeated here.

[0177] On the basis of any of the above embodiments, the following will detail how the first CSI report occupies the CSI processing unit (CPU).

[0178] In one possible implementation, the first CSI report can occupy the CPU of the target cell and / or the CPU of the serving cell. That is, the UE can occupy the CSI processing unit CPU of the target cell and / or the CPU of the serving cell to process the first CSI report.

[0179] Wherein, the way that the first CSI report occupies the CPU of the target cell includes any of the following:

[0180] Occupation mode 1: the occupation period of the CPU of the target cell starts from the first symbol and ends when the first CSI report is sent.

[0181] Wherein, the first symbol is the first symbol in the symbol occupied by the latest one of the CSI resources of the CSI reference resources.

[0182] The time domain position of the CSI reference resources is before the sending time of the first CSI report. That is, the CSI reference resources are time-frequency resources in at least one time slot before the time slot where the first CSI report is reported.

[0183] The latest CSI resource no later than the CSI reference resource can refer to a CSI resource located before the time slot where the CSI reference resource is located in the time domain, and adjacent to the CSI reference resource in the time domain. In the time domain, there can be a gap between the CSI resource and the CSI reference resource, or there can be no gap.

[0184] As shown in the example, Figure 8 The first CSI report is reported at symbol 11, the CSI reference resource is located at symbol 7 to symbol 9, CSI resource 1 is located at symbol 4 to symbol 5, and CSI resource 2 is located at symbol 1 to symbol 2. The latest CSI resource no later than the CSI reference resource is CSI resource 1, and the first symbol is symbol 4.

[0185] The CSI resource refers to a resource for transmitting a CSI-RS.

[0186] The CPU occupation period of the target cell starts from the cell switching command taking effect to the end of the first CSI report sending.

[0187] That is, the CPU occupation period of the target cell starts from the UE successfully sending the hybrid automatic repeat request acknowledgement (HARQ-ACK) message of the physical downlink shared channel (PDSCH) carrying the cell switching command to the end of the first CSI report sending.

[0188] The CPU occupation period of the target cell starts from the cell switching completion to the end of the first CSI report sending.

[0189] The first CSI report occupies the CPU of the serving cell from the first symbol to the end of the cell switching completion. The definition of the first symbol can refer to the description in the occupation mode 1 described above, and will not be described here.

[0190] It should be noted that the current serving cell can be referred to as the first cell, and the target cell can be referred to as the second cell, and the second cell is a cell to be switched to a serving cell.

[0191] Figure 9 The structure schematic diagram of the communication device 10 provided by the embodiment of the present application is shown in the figure. Figure 10 As shown in the figure, the device 10 includes:

[0192] The receiving module 11 is configured to receive the CSI report configuration information and the CSI resource configuration information of at least one candidate cell sent by the serving cell.

[0193] The receiving module 11 is further configured to receive indication information sent by the serving cell, the indication information indicating that a first CSI report is reported, and the first CSI report is used to assist a target cell in scheduling, the target cell being a cell in the at least one candidate cell;

[0194] The sending module 12 is configured to send the first CSI report to the target cell.

[0195] In a possible implementation, the receiving module 11 is specifically configured to:

[0196] receive a cell handover command sent by the serving cell, and the cell handover command contains the indication information.

[0197] In a possible implementation, QCL information of a CSI resource associated with the first CSI report is indicated by a TCI state identifier in the cell handover command.

[0198] In a possible implementation, the receiving module 11 is specifically configured to

[0199] receive a first DCI sent by the serving cell, and the first DCI contains the indication information.

[0200] In a possible implementation, the receiving module 11 is specifically configured to

[0201] receive a first MAC CE sent by the serving cell, and the first MAC CE contains the indication information.

[0202] In a possible implementation, the sending module 12 is specifically configured to:

[0203] send the first CSI report to the target cell on a first uplink resource; and the first uplink resource includes any one of the following:

[0204] PUCCH resource or PUSCH resource contained in CSI report configuration information associated with the first CSI report; or

[0205] PUCCH resource or PUSCH resource indicated by the cell handover command; or

[0206] PUSCH resource scheduled by a second DCI sent by the target cell.

[0207] In a possible implementation, the sending module 12 is specifically configured to:

[0208] send the first CSI report to the target cell through a message 3 in a random access process in the cell handover process.

[0209] In a possible implementation, the sending module 12 is specifically configured to:

[0210] sending the first CSI report to the target cell on a PUSCH resource scheduled by a first DCI.

[0211] In a possible implementation, the sending module 12, in particular, is configured to:

[0212] sending the first CSI report to the target cell on a PUCCH resource or a PUSCH resource indicated by a first MAC CE.

[0213] In a possible implementation, the first CSI report occupies a CSI processing unit CPU of the target cell and / or a CPU of the serving cell.

[0214] In a possible implementation, the occupation period of the CPU of the target cell starts from a first symbol and ends when the sending of the first CSI report is completed.

[0215] The first symbol is the first symbol in a symbol occupied by a latest CSI resource of the CSI reference resource, and the time domain position of the CSI reference resource is before the sending time of the first CSI report.

[0216] In a possible implementation, the occupation period of the CPU of the target cell starts from when a cell switching command takes effect and ends when the sending of the first CSI report is completed.

[0217] In a possible implementation, the occupation period of the CPU of the target cell starts from when a cell switching is completed and ends when the sending of the first CSI report is completed.

[0218] In a possible implementation, the occupation period of the CPU of the serving cell starts from a first symbol and ends when a cell switching is completed.

[0219] The first symbol is the first symbol in a symbol occupied by a latest CSI resource of the CSI reference resource, and the time domain position of the CSI reference resource is before the sending time of the first CSI report.

[0220] The communication apparatus 10 can perform the steps executed by the UE in the method embodiments described above, and the implementation principles and beneficial effects are similar, which will not be repeated here.

[0221] Figure 10 A structural schematic diagram of a communication apparatus 20 provided in the embodiments of the present application is shown in FIG. 2. As shown in FIG. 2, the apparatus 20 includes: Figure 10

[0222] The sending module 21 is configured to send CSI report configuration information and CSI resource configuration information of at least one candidate cell.

[0223] ​The sending module 21 is further configured to send indication information, the indication information indicating reporting of a first CSI report, the first CSI report being used for assisting a target cell in scheduling, the target cell being a cell in the at least one candidate cell.

[0224] In a possible implementation, the sending module 21 is specifically configured to:

[0225] send a cell handover command, the cell handover command containing the indication information.

[0226] In a possible implementation, QCL information of a CSI resource associated with the first CSI report is indicated by a TCI state identifier in the cell handover command.

[0227] In a possible implementation, the sending module 21 is specifically configured to:

[0228] send a first DCI, the first DCI containing the indication information.

[0229] In a possible implementation, the sending module 21 is specifically configured to:

[0230] send a first MAC CE, the first MAC CE containing the indication information.

[0231] The communication apparatus 20 can perform the steps performed by the network equipment to which the serving cell belongs in the method embodiments described above, and has similar implementation principles and beneficial effects, which will not be described here in detail.

[0232] Figure 11 A structural diagram of a communication apparatus 30 is provided for the embodiments of the present application. Please refer to Figure 11 The apparatus 30 can include a transceiver 31, a memory 32, and a processor 33. The transceiver 31 can include a transmitter and / or a receiver. The transmitter can also be referred to as a sender, a transmitter, a transmission port, or a transmission interface, and the like. The receiver can also be referred to as a receiver, a receiver, a receiving port, or a receiving interface, and the like. Exemplarily, the transceiver 31, the memory 32, and the processor 33 are connected to each other through a bus 34.

[0233] The memory 32 is configured to store program instructions.

[0234] The processor 33 is configured to execute the program instructions stored in the memory, so as to enable the communication apparatus 30 to perform the steps performed by the UE or the steps performed by the network equipment to which the serving cell belongs in the method embodiments described above.

[0235] The transceiver 31 is configured to perform the transceiving functions of the communication apparatus 30 in the communication method described above.

[0236] The communication apparatus 30 can be a chip, a module, an integrated development environment (IDE), etc.

[0237] The communication apparatus 30 can perform the steps executed by the UE or the network equipment to which the serving cell belongs in the above method embodiments, and the implementation principles and beneficial effects are similar, which will not be repeated here.

[0238] The embodiment of the present application provides a computer readable storage medium, and the computer readable storage medium stores computer execution instructions. When the computer execution instructions are executed by a computer, the communication method of any one of the above is executed.

[0239] The embodiment of the present application also provides a computer program product, which can be executed by a processor. When the computer program product is executed by a computer, the communication method of any one of the above is executed.

[0240] All or part of the steps of the above method embodiments can be completed by program instruction related hardware. The foregoing program can be stored in a readable memory. When the program is executed, the steps of the above method embodiments are executed; and the foregoing memory (storage medium) includes: read only memory (ROM), random access memory (RAM), flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disc, and any combination thereof.

[0241] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing devices to produce a machine, so that the instructions executed by the computer or other programmable data processing devices produce a device that implements the functions specified in the flowcharts and / or block diagrams. Figure 1 The device that implements the functions specified in one flow or multiple flows and / or blocks. Figure 1 The device that implements the functions specified in one flow or multiple flows and / or blocks.

[0242] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the Figure 1 function specified in the flow or flows and / or blocks Figure 1 of the block or blocks.

[0243] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions that are executed on the computer or other programmable apparatus provide steps for implementing the Figure 1 function specified in the flow or flows and / or blocks Figure 1 of the block or blocks.

[0244] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A communication method, characterized in that, include: Receive channel state information, CSI report configuration information, and CSI resource configuration information of at least one candidate cell sent by the serving cell; The system receives an indication message sent by the serving cell, which instructs the reporting of a first CSI report. The first CSI report is used to assist the target cell in scheduling, and the target cell is a cell among the at least one candidate cell. Send the first CSI report to the target cell.

2. The method according to claim 1, characterized in that, The receipt of the indication information sent by the serving cell includes: Receive a cell handover command sent by the serving cell, the cell handover command containing the indication information.

3. The method according to claim 2, characterized in that, The quasi-co-located QCL information of the CSI resource associated with the first CSI report is indicated by the Transmission Configuration Indication (TCI) status identifier in the cell handover command.

4. The method according to claim 1, characterized in that, The receipt of the indication information sent by the serving cell includes: The first downlink control information (DCI) sent by the serving cell is received, and the first DCI contains the indication information.

5. The method according to claim 1, characterized in that, The receipt of the indication information sent by the serving cell includes: The first Media Access Control (MAC) CE sent by the serving cell is received, wherein the first MAC CE contains the indication information.

6. The method according to claim 2, characterized in that, Sending the first CSI report to the target cell includes: The first CSI report is sent to the target cell on a first uplink resource; wherein the first uplink resource includes any one of the following: The CSI report configuration information associated with the first CSI report includes Physical Uplink Control Channel (PUCCH) resources or Physical Uplink Shared Channel (PUSCH) resources; or, The cell handover command indicates the PUCCH or PUSCH resources; or... The target cell sends the second DCI-scheduled PUSCH resources.

7. The method according to claim 2, characterized in that, Sending the first CSI report to the target cell includes: The first CSI report is sent to the target cell via message 3 in the random access process during cell handover.

8. The method according to claim 4, characterized in that, Sending the first CSI report to the target cell includes: The first CSI report is sent to the target cell on the PUSCH resource scheduled by the first DCI.

9. The method according to claim 5, characterized in that, Sending the first CSI report to the target cell includes: The first CSI report is sent to the target cell on the PUCCH or PUSCH resource indicated by the first MAC CE.

10. The method according to any one of claims 1-9, characterized in that, The first CSI report occupies the CPU of the CSI processing unit of the target cell and / or the CPU of the serving cell.

11. The method according to claim 10, characterized in that, The CPU usage period of the target cell begins from the first symbol and ends when the first CSI report is sent; wherein, The first symbol is the first symbol among the symbols occupied by the most recent CSI resource no later than the CSI reference resource, and the time domain position of the CSI reference resource is located before the transmission time of the first CSI report.

12. The method according to claim 10, characterized in that, The CPU usage period of the target cell begins when the cell handover command takes effect and ends when the first CSI report is sent.

13. The method according to claim 10, characterized in that, The CPU usage period of the target cell begins after the cell handover is completed and ends after the first CSI report is sent.

14. The method according to any one of claims 10-13, characterized in that, The CPU usage period of the serving cell begins from the first symbol and ends when the cell handover is completed; wherein, The first symbol is the first symbol among the symbols occupied by the most recent CSI resource no later than the CSI reference resource, and the time domain position of the CSI reference resource is located before the transmission time of the first CSI report.

15. A communication method, characterized in that, include: Send at least one candidate cell's channel state information, CSI report configuration information, and CSI resource configuration information; Send an instruction message, which instructs the reporting of a first CSI report. The first CSI report is used to assist the target cell in scheduling. The target cell is a cell among the at least one candidate cell.

16. The method according to claim 15, characterized in that, The sending instruction information includes: Send a cell handover command, which includes the indication information.

17. The method according to claim 16, characterized in that, The quasi-co-located QCL information of the CSI resource associated with the first CSI report is indicated by the Transmission Configuration Indication (TCI) status identifier in the cell handover command.

18. The method according to claim 15, characterized in that, The sending instruction information includes: Send a first downlink control information (DCI), which includes the indication information.

19. The method according to claim 15, characterized in that, The sending instruction information includes: Send the first media access control (MAC) control unit CE, the first MAC CE containing the indication information.

20. A communication device, characterized in that, It includes a receiving module and a transmitting module, wherein, The receiving module is used to receive channel state information (CSI) report configuration information and CSI resource configuration information of at least one candidate cell sent by the serving cell; The receiving module is further configured to receive indication information sent by the serving cell, the indication information indicating the reporting of a first CSI report, the first CSI report being used to assist the target cell in scheduling, the target cell being a cell among the at least one candidate cell; The sending module is used to send the first CSI report to the target cell.

21. A communication device, characterized in that, Includes a sending module, in which, The sending module is used to send at least one candidate cell's channel state information (CSI) report configuration information and CSI resource configuration information; The sending module is further configured to send indication information, the indication information indicating the reporting of a first CSI report, the first CSI report being used to assist the target cell in scheduling, the target cell being a cell among the at least one candidate cell.

22. A communication device, characterized in that, include: Processor, memory; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1-14, or the method as described in any one of claims 15-19.

23. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions that, when executed by a processor, are used to implement the method of any one of claims 1-14, or the method of any one of claims 15-19.

24. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method of any one of claims 1-14, or the method of any one of claims 15-19.

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