Data transmission method and apparatus, cooperative-transmission-resource allocation method and apparatus, and device

Abstract

Provided in the present disclosure are a data transmission method and apparatus, a cooperative-transmission-resource allocation method and apparatus, and a device. The data transmission method comprises: a terminal receiving radio resource control (RRC) signaling sent by a first network node, wherein the RRC signaling is used for pre-configuring cooperative transmission resources; and on the basis of the cooperative transmission resources, receiving or sending data.

Description

Data transmission method, coordinated transmission resource allocation method, equipment and device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202311630497.0, filed on November 30, 2023, entitled “Data transmission method, collaborative transmission resource allocation method, equipment and device”, which is incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates to the field of wireless communication technologies, and in particular to a data transmission method, a coordinated transmission resource allocation method, a device, and an apparatus. Background Art

[0004] In existing wireless mobile communication systems (3G, 4G, 5G), the scheduling and transmission of terminals (or user equipment, User Equipment, UE) are performed on a cell basis, that is, the terminal receives downlink transmissions sent by the base station and sends uplink transmissions to the base station within a cell. The uplink and downlink resources used, the identifier used to identify the transmission in scheduling and transmission, and the identifier used to identify the terminal in scheduling and transmission all belong to the cell. This scheduling and transmission mechanism will result in a decrease in transmission performance for terminals at the edge of the cell. To this end, coordinated transmission of different cells or different transmit / receive points (TRPs) is introduced, that is, different cells or different TRPs send the same downlink transmission (for example, different cells send the same data to the terminal), so that the terminal obtains a combining gain when receiving; in the uplink direction, different cells or different TRPs simultaneously receive the transmissions sent by the terminal, and transmission combination is performed on the base station side to achieve a combining gain.

[0005] However, the current collaborative transmission technology can only be carried out between multiple cells or TRPs that do not require signaling interaction and have no synchronization difference. In actual deployment, it is difficult to achieve collaborative transmission of different cells or TRPs to the same terminal. Summary of the Invention

[0006] The present disclosure provides a data transmission method, a coordinated transmission resource allocation method, equipment and an apparatus for realizing coordinated transmission of different cells or TRPs to the same terminal, thereby improving transmission performance.

[0007] In a first aspect, the present disclosure provides a data transmission method, applied to a terminal, comprising:

[0008] receiving radio resource control (RRC) signaling sent by the first network node, where the RRC signaling is used to pre-configure coordinated transmission resources;

[0009] Data is received or sent based on cooperative transmission resources.

[0010] In some embodiments, the RRC signaling includes one or more of the following information:

[0011] Effective time information of collaborative transmission resources;

[0012] The period of coordinated transmission resources;

[0013] The number of cooperative transmission resources in each cooperative transmission resource period;

[0014] The number of times the cooperative transmission resource is effective;

[0015] Physical layer resource configuration information of coordinated transmission resources;

[0016] Refer to the network node indication;

[0017] Preconfigured resource type indication;

[0018] Information about network nodes participating in collaborative transmission;

[0019] The identifier used to scramble cooperative transmissions.

[0020] In some embodiments, the first network node includes any of the following:

[0021] Primary cell under carrier aggregation CA;

[0022] The primary cell of the primary base station in dual-connected DC;

[0023] Primary cell of the secondary base station under DC;

[0024] Primary cell in the timing advance group TAG;

[0025] Any cell or any transmission reception point TRP to which the terminal is currently connected;

[0026] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0027] The source cell or source TRP for the coordinated transmission;

[0028] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0029] In some embodiments, the method further comprises:

[0030] A physical downlink control channel (PDCCH) command is received from the second network node, where the PDCCH command is used to activate the coordinated transmission resource.

[0031] In some embodiments, the PDCCH order includes one or more of the following information:

[0032] Effective time information of collaborative transmission resources;

[0033] The number of cooperative transmission resources in each cooperative transmission resource period;

[0034] The number of times the cooperative transmission resource is effective;

[0035] Physical layer resource allocation information for coordinated transmission resources;

[0036] Refer to the network node indication;

[0037] Information about network nodes participating in collaborative transmission.

[0038] In some embodiments, the second network node includes any of the following:

[0039] Primary cell under CA;

[0040] The primary cell of the primary base station under DC;

[0041] Primary cell of the secondary base station under DC;

[0042] The primary cell in the TAG;

[0043] Any cell or TRP to which the terminal is currently connected;

[0044] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0045] The source cell or source TRP for the coordinated transmission;

[0046] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0047] In some embodiments, the method further comprises:

[0048] Any of the following moments is determined as the effective moment of the cooperative transmission resource:

[0049] The sending or receiving time of RRC signaling; or

[0050] The time indicated by the effective time information of the coordinated transmission resource in the RRC signaling; or

[0051] The sending or receiving time of the PDCCH command for activating the coordinated transmission resource; or

[0052] The time indicated by the activation time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

[0053] In some embodiments, the method further comprises:

[0054] determining cooperative transmission resources based on resource configuration of the third network node;

[0055] In which, when the coordinated transmission resources are allocated physical layer resources by RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

[0056] In some embodiments, the method further comprises:

[0057] The third network node is determined as a timing synchronization reference network node.

[0058] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0059] The absolute time at which the coordinated transport resource becomes effective; or,

[0060] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0061] In some embodiments, the cooperative transmission resource is a resource that is periodically effective, or a resource that is effective once, or a resource that is effective a specified number of times.

[0062] In a second aspect, the present disclosure further provides a coordinated transmission resource allocation method, applied to a first network node, comprising:

[0063] Sending radio resource control (RRC) signaling to the terminal, where the RRC signaling is used to pre-configure coordinated transmission resources.

[0064] In some embodiments, the RRC signaling includes one or more of the following information:

[0065] Effective time information of collaborative transmission resources;

[0066] The period of coordinated transmission resources;

[0067] The number of cooperative transmission resources in each cooperative transmission resource period;

[0068] The number of times the cooperative transmission resource is effective;

[0069] Physical layer resource configuration information of coordinated transmission resources;

[0070] Refer to the network node indication;

[0071] Preconfigured resource type indication;

[0072] Information about network nodes participating in collaborative transmission;

[0073] The identifier used to scramble cooperative transmissions.

[0074] In some embodiments, the method further comprises:

[0075] A physical downlink control channel (PDCCH) command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resources.

[0076] In some embodiments, the PDCCH order includes one or more of the following information:

[0077] Effective time information of collaborative transmission resources;

[0078] The number of cooperative transmission resources in each cooperative transmission resource period;

[0079] The number of times the cooperative transmission resource is effective;

[0080] Physical layer resource allocation information for coordinated transmission resources;

[0081] Refer to the network node indication;

[0082] Information about network nodes participating in collaborative transmission.

[0083] In some embodiments, the method further comprises:

[0084] Through the interface between distributed data units, the interface between the central control plane node and the distributed data unit, or the interface between base stations, the pre-configuration information of the coordinated transmission resources and / or the activation information of the coordinated transmission resources are exchanged with other network nodes participating in the coordinated transmission.

[0085] In some embodiments, the method further comprises:

[0086] Any of the following moments is determined as the effective moment of the cooperative transmission resource:

[0087] The sending or receiving time of RRC signaling; or

[0088] The time indicated by the effective time information of the coordinated transmission resource in the RRC signaling; or

[0089] The sending or receiving time of the PDCCH command for activating the coordinated transmission resource; or

[0090] The time indicated by the activation time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

[0091] In some embodiments, the method further comprises:

[0092] determining cooperative transmission resources based on resource configuration of the third network node;

[0093] In which, when the coordinated transmission resources are allocated physical layer resources by RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

[0094] In some embodiments, the method further comprises:

[0095] The third network node is determined as a timing synchronization reference network node.

[0096] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0097] The absolute time at which the coordinated transport resource becomes effective; or,

[0098] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0099] In some embodiments, the cooperative transmission resource is a resource that is periodically effective, or a resource that is effective once, or a resource that is effective a specified number of times.

[0100] In some embodiments, the first network node includes any of the following:

[0101] Primary cell under carrier aggregation CA;

[0102] The primary cell of the primary base station in dual-connected DC;

[0103] Primary cell of the secondary base station under DC;

[0104] Primary cell in the timing advance group TAG;

[0105] Any cell or any transmission reception point TRP to which the terminal is currently connected;

[0106] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0107] The source cell or source TRP for the coordinated transmission;

[0108] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0109] In a third aspect, the present disclosure further provides a terminal, including a memory, a transceiver, and a processor;

[0110] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0111] receiving radio resource control (RRC) signaling sent by the first network node, where the RRC signaling is used to pre-configure coordinated transmission resources;

[0112] Data is received or sent based on cooperative transmission resources.

[0113] In some embodiments, the RRC signaling includes one or more of the following information:

[0114] Effective time information of collaborative transmission resources;

[0115] The period of coordinated transmission resources;

[0116] The number of cooperative transmission resources in each cooperative transmission resource period;

[0117] The number of times the cooperative transmission resource is effective;

[0118] Physical layer resource configuration information of coordinated transmission resources;

[0119] Refer to the network node indication;

[0120] Preconfigured resource type indication;

[0121] Information about network nodes participating in collaborative transmission;

[0122] The identifier used to scramble cooperative transmissions.

[0123] In some embodiments, the first network node includes any of the following:

[0124] Primary cell under carrier aggregation CA;

[0125] The primary cell of the primary base station in dual-connected DC;

[0126] Primary cell of the secondary base station under DC;

[0127] Primary cell in the timing advance group TAG;

[0128] Any cell or any transmission reception point TRP to which the terminal is currently connected;

[0129] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0130] The source cell or source TRP for the coordinated transmission;

[0131] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0132] In some embodiments, the operations further include:

[0133] A physical downlink control channel (PDCCH) command is received from the second network node, where the PDCCH command is used to activate the coordinated transmission resource.

[0134] In some embodiments, the PDCCH order includes one or more of the following information:

[0135] Effective time information of collaborative transmission resources;

[0136] The number of cooperative transmission resources in each cooperative transmission resource period;

[0137] The number of times the cooperative transmission resource is effective;

[0138] Physical layer resource allocation information for coordinated transmission resources;

[0139] Refer to the network node indication;

[0140] Information about network nodes participating in collaborative transmission.

[0141] In some embodiments, the second network node includes any of the following:

[0142] Primary cell under CA;

[0143] The primary cell of the primary base station under DC;

[0144] Primary cell of the secondary base station under DC;

[0145] The primary cell in the TAG;

[0146] Any cell or TRP to which the terminal is currently connected;

[0147] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0148] The source cell or source TRP for the coordinated transmission;

[0149] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0150] In some embodiments, the operations further include:

[0151] Any of the following moments is determined as the effective moment of the cooperative transmission resource:

[0152] The sending or receiving time of RRC signaling; or

[0153] The time indicated by the effective time information of the coordinated transmission resource in the RRC signaling; or

[0154] The sending or receiving time of the PDCCH command for activating the coordinated transmission resource; or

[0155] The time indicated by the activation time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

[0156] In some embodiments, the operations further include:

[0157] determining cooperative transmission resources based on resource configuration of the third network node;

[0158] In which, when the coordinated transmission resources are allocated physical layer resources by RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

[0159] In some embodiments, the operations further include:

[0160] The third network node is determined as a timing synchronization reference network node.

[0161] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0162] The absolute time at which the coordinated transport resource becomes effective; or,

[0163] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0164] In some embodiments, the cooperative transmission resource is a resource that is periodically effective, or a resource that is effective once, or a resource that is effective a specified number of times.

[0165] In a fourth aspect, the present disclosure further provides a first network node, comprising a memory, a transceiver, and a processor;

[0166] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0167] Sending radio resource control (RRC) signaling to the terminal, where the RRC signaling is used to pre-configure coordinated transmission resources.

[0168] In some embodiments, the RRC signaling includes one or more of the following information:

[0169] Effective time information of collaborative transmission resources;

[0170] The period of coordinated transmission resources;

[0171] The number of cooperative transmission resources in each cooperative transmission resource period;

[0172] The number of times the cooperative transmission resource is effective;

[0173] Physical layer resource configuration information of coordinated transmission resources;

[0174] Refer to the network node indication;

[0175] Preconfigured resource type indication;

[0176] Information about network nodes participating in collaborative transmission;

[0177] The identifier used to scramble cooperative transmissions.

[0178] In some embodiments, the operations further include:

[0179] A physical downlink control channel (PDCCH) command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resources.

[0180] In some embodiments, the PDCCH order includes one or more of the following information:

[0181] Effective time information of collaborative transmission resources;

[0182] The number of cooperative transmission resources in each cooperative transmission resource period;

[0183] The number of times the cooperative transmission resource is effective;

[0184] Physical layer resource allocation information for coordinated transmission resources;

[0185] Refer to the network node indication;

[0186] Information about network nodes participating in collaborative transmission.

[0187] In some embodiments, the operations further include:

[0188] Through the interface between distributed data units, the interface between the central control plane node and the distributed data unit, or the interface between base stations, the pre-configuration information of the coordinated transmission resources and / or the activation information of the coordinated transmission resources are exchanged with other network nodes participating in the coordinated transmission.

[0189] In some embodiments, the operations further include:

[0190] Any of the following moments is determined as the effective moment of the cooperative transmission resource:

[0191] The sending or receiving time of RRC signaling; or

[0192] The time indicated by the effective time information of the coordinated transmission resource in the RRC signaling; or

[0193] The sending or receiving time of the PDCCH command for activating the coordinated transmission resource; or

[0194] The time indicated by the activation time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

[0195] In some embodiments, the operations further include:

[0196] determining cooperative transmission resources based on resource configuration of the third network node;

[0197] In which, when the coordinated transmission resources are allocated physical layer resources by RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

[0198] In some embodiments, the operations further include:

[0199] The third network node is determined as a timing synchronization reference network node.

[0200] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0201] The absolute time at which the coordinated transport resource becomes effective; or,

[0202] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0203] In some embodiments, the cooperative transmission resource is a resource that is periodically effective, or a resource that is effective once, or a resource that is effective a specified number of times.

[0204] In some embodiments, the first network node includes any of the following:

[0205] Primary cell under carrier aggregation CA;

[0206] The primary cell of the primary base station in dual-connected DC;

[0207] Primary cell of the secondary base station under DC;

[0208] Primary cell in the timing advance group TAG;

[0209] Any cell or any transmission reception point TRP to which the terminal is currently connected;

[0210] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0211] The source cell or source TRP for the coordinated transmission;

[0212] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0213] In a fifth aspect, the present disclosure further provides a data transmission device, comprising:

[0214] a receiving unit, configured to receive radio resource control RRC signaling sent by the first network node, where the RRC signaling is used to pre-configure coordinated transmission resources;

[0215] The transmission unit is used to receive or send data based on the coordinated transmission resources.

[0216] In a sixth aspect, the present disclosure further provides a coordinated transmission resource allocation apparatus, including:

[0217] The sending unit is used to send radio resource control RRC signaling to the terminal, where the RRC signaling is used to pre-configure cooperative transmission resources.

[0218] In the seventh aspect, the present disclosure also provides a non-transitory readable storage medium, which stores a computer program, and the computer program is used to enable the processor to execute the data transmission method described in the first aspect as described above, or execute the collaborative transmission resource allocation method described in the second aspect as described above.

[0219] In an eighth aspect, the present disclosure further provides a communication device, in which a computer program is stored, and the computer program is used to enable the communication device to execute the data transmission method described in the first aspect, or to execute the collaborative transmission resource allocation method described in the second aspect.

[0220] In the ninth aspect, the present disclosure also provides a processor-readable storage medium, which stores a computer program, and the computer program is used to enable the processor to execute the data transmission method described in the first aspect as described above, or execute the collaborative transmission resource allocation method described in the second aspect as described above.

[0221] In the tenth aspect, the present disclosure also provides a chip product, in which a computer program is stored, and the computer program is used to enable the chip product to execute the data transmission method described in the first aspect as described above, or to execute the collaborative transmission resource allocation method described in the second aspect as described above.

[0222] The data transmission method, collaborative transmission resource allocation method, equipment and device provided by the present invention pre-configure resources for collaborative transmission for the terminal on the network side, and the terminal receives downlink data or sends uplink data based on the pre-configured collaborative transmission resources. Even if there is a transmission delay in the interactive signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, collaborative transmission of different cells or TRPs to one terminal can still be achieved, thereby improving transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0223] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0224] FIG1 is a schematic diagram of coordinated transmission of different cells under two deployment modes provided by related technologies;

[0225] FIG2 is a flow chart of a data transmission method according to an embodiment of the present disclosure;

[0226] FIG3 is a schematic diagram of a flow chart of a method for allocating coordinated transmission resources according to an embodiment of the present disclosure;

[0227] FIG4 is a schematic diagram of the structure of a terminal provided in an embodiment of the present disclosure;

[0228] FIG5 is a schematic structural diagram of a first network node provided by an embodiment of the present disclosure;

[0229] FIG6 is a schematic structural diagram of a data transmission device provided in an embodiment of the present disclosure;

[0230] FIG7 is a schematic structural diagram of a coordinated transmission resource allocation apparatus provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0231] In the embodiments of the present disclosure, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0232] In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0233] In the embodiments of the present disclosure, the terms "first," "second," and the like are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present disclosure can be implemented in an order other than that illustrated or described herein. Furthermore, the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more.

[0234] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure and not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0235] In order to facilitate a clearer understanding of the technical solutions of the various embodiments of the present disclosure, some technical contents related to the various embodiments of the present disclosure are first introduced.

[0236] Figure 1 is a schematic diagram of coordinated transmission of different cells under two deployment modes provided by related technologies. In part (a) of Figure 1, the base station is deployed in the form of CU-DU-TRP or CCU-DDU-TRP, where CU (Central Unit) or CCU (Cloud-based Control Unit) is the central control plane node, DU (Distributed Unit) or DDU (Distributed Data Unit) is a distributed data unit that can be connected to one or more TRPs. One or more TRPs under the DDU constitute a base station-side cell, which is used to schedule and transmit UEs. The figure takes one TRP corresponding to one base station-side cell as an example. In the figure, UE1 is cooperatively transmitted by cell 1 and cell 2, and UE2 is cooperatively transmitted by cell 2 and cell 3. If inter-cell coordinated transmission is to be achieved, the cells participating in the coordination need to unify transmission resources (time, frequency, and space resources) and transmission formats (Modulation and Coding Scheme (MCS), Redundancy Version (RV)), etc.). Therefore, signaling interaction between cells is required. For UE1, different cells are managed by one DU / DDU, and it is relatively easy to interactively transmit information on the air interface between cells. For UE2, different cells belong to different DU / DDUs, and the interactive air interface coordinated transmission information between cells will have the problem of transmission delay, and timely scheduling cannot be achieved. In addition, different DU / DDUs usually have synchronization time differences, and the coordinated transmission of different cells under them also has the problem of timing synchronization.

[0237] In part (b) of Figure 1, the access point (AP) is an independent base station node, typically a macro base station and a home base station. Different base stations are responsible for scheduling and transmission respectively, and their signaling exchanges are carried out through the Xn interface. The Xn interface has a large latency range and cannot achieve timely exchange of air interface coordinated transmission information. It also has the problem of timing synchronization of coordinated transmission in different cells.

[0238] Therefore, although the use of multiple TRPs for air interface transmission with the terminal, namely multiple TRP (m-TRP) technology, can improve transmission performance, due to the information interaction delay and different timing synchronization characteristics between different cells, coordinated transmission of different cells is difficult to achieve in actual deployment.

[0239] In response to the above problems, the embodiments of the present disclosure provide a solution by pre-configuring resources for collaborative transmission for the terminal on the network side. Even if there is a transmission delay in the interactive signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, collaborative transmission of different cells or TRPs to one terminal can still be achieved.

[0240] FIG2 is a flow chart of a data transmission method provided by an embodiment of the present disclosure. The method is applied to a terminal. As shown in FIG2 , the method includes the following steps:

[0241] Step 200: Receive radio resource control (RRC) signaling sent by a first network node, where the RRC signaling is used to pre-configure cooperative transmission resources.

[0242] Step 201: Receive or send data based on coordinated transmission resources.

[0243] Specifically, collaborative transmission resources, i.e., resources used for collaborative transmission, refer to: downlink resources that send or participate in sending downlink data by other cells or other TRPs (i.e., non-current cells, non-current TRPs), and uplink resources that receive uplink data by other cells or other TRPs.

[0244] In some embodiments, the cooperative transmission resource is a resource that is periodically effective, or a resource that is effective once, or a resource that is effective a specified number of times.

[0245] In the embodiment of the present disclosure, the network side pre-configures cooperative transmission resources for the terminal through Radio Resource Control (RRC) signaling. After the terminal configures the pre-configured cooperative transmission resources on the network side, the terminal receives downlink data or sends uplink data in accordance with the physical layer resources and transmission format allocated for the pre-configured cooperative transmission resources at the moment the pre-configured cooperative transmission resources take effect. Correspondingly, each cell or TRP participating in the cooperative transmission on the network side also sends downlink data or receives uplink data in accordance with the physical layer resources and transmission format allocated in the pre-configured cooperative transmission resources at the moment the pre-configured cooperative transmission resources take effect. In this way, even if there is a transmission delay in the interactive signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, the cooperative transmission of different cells or TRPs to one terminal can still be achieved.

[0246] In some embodiments, the RRC signaling includes one or more of the following information:

[0247] (1) Effective time information of cooperative transmission resources: This effective time information can be used to determine the time when the cooperative transmission resources actually take effect.

[0248] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0249] The absolute time at which the coordinated transport resource becomes effective; or,

[0250] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0251] For example, RRC signaling pre-configures the absolute effective time of the coordinated transmission resource, and the terminal determines the actual effective time of the coordinated transmission resource based on the absolute effective time. The absolute effective time can be a value expressed in units such as year, month, day, hour, minute, second, millisecond, etc., or a value expressed in units such as system frame number, subframe number, and time slot number.

[0252] For example, the absolute effective time of the cooperative transmission resources pre-configured by RRC signaling is a time deviation deltaT relative to the time when the RRC signaling is sent. When the terminal receives the RRC signaling, it determines the time when the RRC signaling is sent, adds the time when the RRC signaling is sent to the time when the RRC signaling is sent, and determines the actual effective time of the cooperative transmission resources by adding the time deviation value pre-configured in the RRC signaling.

[0253] (2) The cycle of collaborative transmission resources.

[0254] For example, the coordinated transmission resources pre-configured by RRC signaling are periodically effective resources, and the terminal periodically determines the start time of each coordinated transmission resource based on the effective time of the coordinated transmission resource and the period value of the coordinated transmission resource.

[0255] (3) The number of cooperative transmission resources in each cooperative transmission resource period, where the cooperative transmission resource period is the period of pre-configured cooperative transmission resources.

[0256] For example, assuming that the number of coordinated transmission resources preconfigured by RRC signaling in each coordinated transmission resource period is N, the terminal determines that there are N consecutive preconfigured resources in each coordinated transmission resource period starting from the start time of each coordinated transmission resource. If the preconfigured coordinated transmission resources are effective once, the number of preconfigured coordinated transmission resources is determined to be N.

[0257] (4) The number of times the collaborative transmission resource is effective.

[0258] For example, assuming that the number of times the RRC signaling pre-configured cooperative transmission resources are effective is K, the terminal determines that the cooperative transmission resources are effective for a specified number of times (i.e., K times), or determines that the cooperative transmission resources are valid within K periods (i.e., the number of effective times can also be understood as the number of effective periods).

[0259] (5) Physical layer resource configuration information of collaborative transmission resources.

[0260] This physical layer resource configuration information includes information such as time-frequency resource configuration and transmission mode. The transmission mode (or transmission format) includes information such as the MCS, RV, and Multiple Input Multiple Output (MIMO) precoding matrix. Based on this physical layer resource configuration information, the terminal determines the actual physical layer resource allocation for each coordinated transmission resource within each coordinated transmission resource period, including the time-frequency resource location and transmission format (such as MCS and RV).

[0261] (6) Reference network node indication. This reference network node indication is used to indicate a reference network node (e.g., a reference cell or reference TRP). The actual physical layer resource allocation of the pre-configured coordinated transmission resources can be determined based on the uplink and downlink resource configuration of the reference network node. For example, the absolute location of the physical layer time-frequency resources of the coordinated transmission resources is determined based on the uplink and downlink resource configuration of the reference network node and the physical layer resource configuration information of the coordinated transmission resources carried in the pre-configured signaling.

[0262] In some embodiments, the reference network node indication may be an identifier of a reference network node, such as a cell identifier of a reference cell, a TRP identifier of a reference TRP, and the like.

[0263] For example, assuming that cell 1 and cell 2 participate in coordinated transmission, the downlink frequency and bandwidth of cell 1 are F1 and BW1 respectively, and the reference cell is cell 1, then the terminal determines the actual receiving transmission resources according to the downlink frequency configuration of cell 1 and the physical layer resource configuration information of the coordinated transmission resources. Cell 2 needs to obtain the downlink resource configuration of cell 1, combine the physical layer resource configuration information of the coordinated transmission resources, determine the transmission resources, and participate in the downlink transmission. Cell 1 performs downlink transmission according to the downlink resource configuration of this cell and the physical layer resource configuration information of the coordinated transmission resources.

[0264] (7) Pre-configured resource type indication: The pre-configured resource type indication is used to indicate that the currently configured pre-configured resource is a resource for cooperative transmission.

[0265] (8) Information about network nodes participating in cooperative transmission: The information about network nodes participating in cooperative transmission is used to indicate the network nodes participating in cooperative transmission, such as cells or TRPs participating in cooperative transmission.

[0266] In some embodiments, the information of the network nodes participating in the cooperative transmission may be an identifier of the network nodes participating in the cooperative transmission, such as a cell identifier or a TRP identifier.

[0267] (9) Identifier used to scramble cooperative transmission.

[0268] For example, the identifier is a Radio Network Temporary Identity (RNTI) x-RNTI or a network-side high-layer identifier specifically used for scrambling cooperative transmissions. The terminal descrambles (downlink) or scrambles (uplink) the received signal based on the identifier, for transmission that can be uniquely identified by both the network and terminal sides.

[0269] In some embodiments, the first network node includes any of the following:

[0270] (1) Primary cell under carrier aggregation (CA).

[0271] For example, the terminal receives RRC signaling in the main cell under CA, and the RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (that is, not the main cell under CA), and uplink resources that receive uplink data by other cells or TRP.

[0272] (2) The primary cell of the primary base station under dual connectivity (DC).

[0273] For example, the terminal receives RRC signaling in the main cell of the main base station under DC, and the RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (that is, the main cell of the main base station other than the DC), and uplink resources that receive uplink data by other cells or TRP.

[0274] (3) The primary cell of the secondary base station under DC.

[0275] For example, the terminal receives RRC signaling in the main cell of the secondary base station under DC, and the RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (that is, the main cell of the secondary base station not under the DC), and uplink resources that receive uplink data by other cells or TRP.

[0276] (4) Primary cell in the Timing Advance Group (TAG).

[0277] For example, the terminal receives RRC signaling in the main cell in a TAG, and the RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., not the main cell in the TAG), and uplink resources that receive uplink data by other cells or TRPs.

[0278] (5) Any cell or TRP to which the terminal is currently connected.

[0279] For example, the terminal receives RRC signaling in any cell or any TRP currently connected, and the RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., cells or TRPs not currently connected), and uplink resources that receive uplink data by other cells or TRPs.

[0280] (6) A distributed data unit to which any TRP to which the terminal is currently connected is connected. This distributed data unit can be a DU or a DDU.

[0281] For example, the terminal receives RRC signaling in the DU or DDU connected to any currently connected TRP. The RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., TRPs that are not currently connected), and uplink resources that receive uplink data by other cells or TRPs.

[0282] (7) The source cell or source TRP for collaborative transmission.

[0283] The source cell or source TRP refers to the dominant cell or dominant TRP for collaborative transmission. Relatively speaking, other cells or TRPs participating in collaborative transmission mainly coordinate and assist the source cell or source TRP in uplink and downlink data transmission.

[0284] For example, the terminal receives RRC signaling in the source cell or source TRP performing collaborative transmission. The RRC signaling is used to pre-configure collaborative transmission resources. The pre-configured collaborative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., not the source cell or source TRP), and uplink resources that receive uplink data by other cells or TRPs.

[0285] (8) The distributed data unit to which the source TRP for coordinated transmission is connected. The distributed data unit can be a DU or a DDU.

[0286] For example, the terminal receives RRC signaling from the DU or DDU connected to the source TRP performing collaborative transmission. The RRC signaling is used to pre-configure collaborative transmission resources. The pre-configured collaborative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., not the source TRP), and uplink resources that receive uplink data by other cells or TRPs.

[0287] The information for pre-configuring the coordinated transmission resources (or pre-configuration information of the coordinated transmission resources) contained in the RRC signaling sent by the first network node is not limited in the specific determination method of this disclosure. For example, the first network node may determine the pre-configuration information and send it to the terminal. At the same time, the first network node may also send the pre-configuration information to other network nodes participating in the coordinated transmission. For another example, other network nodes may determine the pre-configuration information and send it to the first network node. At the same time, the other network nodes may also send the pre-configuration information to other network nodes participating in the coordinated transmission. The network nodes participating in the coordinated transmission need to have the same understanding of the pre-configured coordinated transmission resources.

[0288] The data transmission method provided by the embodiment of the present disclosure pre-configures resources for collaborative transmission for the terminal on the network side, and the terminal receives downlink data or sends uplink data based on the pre-configured collaborative transmission resources. Even if there is a transmission delay in the interactive signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, collaborative transmission of different cells or TRPs to one terminal can still be achieved, thereby improving transmission performance.

[0289] In some embodiments, the method further comprises:

[0290] A physical downlink control channel (PDCCH) command is received from the second network node, where the PDCCH command is used to activate the coordinated transmission resource.

[0291] Specifically, in some implementations, after the network side pre-configures the coordinated transmission resources through RRC signaling, the coordinated transmission resources are in an activated state, and the terminal can use the coordinated transmission resources for uplink and downlink data transmission. In some implementations, after the network side pre-configures the coordinated transmission resources through RRC signaling, the coordinated transmission resources are initially in an inactive state, and the network side activates the coordinated transmission resources through a Physical Downlink Control Channel (PDCCH) command.

[0292] In some embodiments, the PDCCH command includes downlink control information (DCI), which is for illustrative purposes only. Other signaling, messages, or commands known to those skilled in the art that can implement the PDCCH command of the present disclosure can be applied here without limitation.

[0293] In some embodiments, the PDCCH order includes one or more of the following information:

[0294] (1) Effective time information of cooperative transmission resources: This effective time information can be used to determine the time when the cooperative transmission resources actually take effect.

[0295] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0296] The absolute time at which the coordinated transport resource becomes effective; or,

[0297] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0298] In some embodiments, the PDCCH command includes DCI. For example, the DCI indicates the absolute time at which the preconfigured coordinated transmission resource takes effect. The terminal determines the actual time at which the coordinated transmission resource takes effect based on the absolute time. The absolute time can be a value expressed in units such as year, month, day, hour, minute, second, millisecond, or the like, or a value expressed in a system frame number, subframe number, or time slot number.

[0299] For example, the DCI indicates the time deviation deltaT of the absolute effective time of the pre-configured collaborative transmission resource relative to the DCI sending time. When the terminal receives the DCI, it determines the time when the DCI is sent, adds the DCI sending time to the time deviation value indicated in the DCI, and determines the actual effective time of the collaborative transmission resource.

[0300] (2) The number of cooperative transmission resources in each cooperative transmission resource period.

[0301] For example, assuming that the PDCCH command indicates that the number of coordinated transmission resources in each coordinated transmission resource period is N, the terminal determines that there are N consecutive pre-configured resources in each coordinated transmission resource period starting from the start time of each coordinated transmission resource. If the pre-configured coordinated transmission resources are effective once, the number of coordinated transmission resources is determined to be N.

[0302] (3) The number of times the collaborative transmission resource is effective.

[0303] For example, assuming that the PDCCH command indicates that the number of times the coordinated transmission resource is effective is K, the terminal determines that the coordinated transmission resource is effective a specified number of times (i.e., K times), or determines that the coordinated transmission resource is valid within K periods (i.e., the number of effective times can also be understood as the number of effective periods).

[0304] In some embodiments, if the RRC signaling used to pre-configure the coordinated transmission resource and the PDCCH command used to activate the coordinated transmission resource do not configure the number of times the coordinated transmission resource is valid and the period value of the coordinated transmission resource is not configured, the coordinated transmission resource is valid once.

[0305] (4) Physical layer resource allocation information of collaborative transmission resources.

[0306] The physical layer resource allocation information includes information such as time-frequency resource allocation and transmission mode. The transmission mode (or transmission format) includes MCS and RV. Based on this physical layer resource allocation information, the terminal determines the actual physical layer resource allocation for each coordinated transmission resource within each coordinated transmission resource period, including the time-frequency resource location and transmission format (such as MCS and RV).

[0307] (5) Reference network node indication. The reference network node indication is used to indicate a reference network node (e.g., a reference cell or reference TRP). The actual physical layer resource allocation of the pre-configured coordinated transmission resources can be determined based on the uplink and downlink resource configuration of the reference network node. For example, the absolute position of the physical layer time-frequency resources of the coordinated transmission resources is determined based on the uplink and downlink resource configuration of the reference network node and the physical layer resource allocation information of the coordinated transmission resources carried in the activation command.

[0308] In some embodiments, the reference network node indication may be an identifier of a reference network node, such as a cell identifier of a reference cell, a TRP identifier of a reference TRP, and the like.

[0309] For example, assuming that cell 1 and cell 2 participate in coordinated transmission, the downlink frequency and bandwidth of cell 1 are F1 and BW1 respectively, and the reference cell is cell 1, the terminal determines the actual receiving transmission resources according to the downlink frequency configuration of cell 1 and the physical layer resource allocation information of the coordinated transmission resources in the activation command. Cell 2 needs to obtain the downlink resource configuration of cell 1, combine the physical layer resource allocation information of the coordinated transmission resources in the activation command, determine the transmission resources, and participate in the downlink transmission. Cell 1 performs downlink transmission according to the downlink resource configuration of this cell and the physical layer resource allocation information of the coordinated transmission resources in the activation command.

[0310] (6) Information about network nodes participating in cooperative transmission: The information about network nodes participating in cooperative transmission is used to indicate the network nodes participating in cooperative transmission, such as cells or TRPs participating in cooperative transmission.

[0311] In some embodiments, the information of the network nodes participating in the cooperative transmission may be an identifier of the network nodes participating in the cooperative transmission, such as a cell identifier or a TRP identifier.

[0312] In some embodiments, the second network node includes any of the following:

[0313] Primary cell under CA;

[0314] The primary cell of the primary base station under DC;

[0315] Primary cell of the secondary base station under DC;

[0316] The primary cell in the TAG;

[0317] Any cell or TRP to which the terminal is currently connected;

[0318] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0319] The source cell or source TRP for the coordinated transmission;

[0320] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0321] The second network node and the first network node are the same network node, or the second network node and the first network node are different network nodes.

[0322] In some embodiments, the method further comprises:

[0323] Any of the following moments is determined as the effective moment of the cooperative transmission resource:

[0324] (1) The sending or receiving time of RRC signaling.

[0325] For example, after receiving the RRC signaling for pre-configuring the coordinated transmission resources, the terminal determines the sending time of the RRC signaling, and determines the sending time of the RRC signaling as the actual effectiveness time of the coordinated transmission resources.

[0326] For example, after receiving the RRC signaling for pre-configuring the coordinated transmission resources, the terminal determines the time of receiving the RRC signaling as the actual time of effectiveness of the coordinated transmission resources.

[0327] In some implementations, the network side uses the sending time of the RRC signaling as the actual effective time of the coordinated transmission resource, and the terminal side uses the receiving time of the RRC signaling as the actual effective time of the coordinated transmission resource.

[0328] When the sending or receiving time of the RRC signaling is used as the effective time of the coordinated transmission resource, the RRC signaling needs to include specific resource allocation information, that is, the resource is configured and activated through the RRC signaling.

[0329] (2) The time indicated by the effective time information of the coordinated transmission resource in the RRC signaling.

[0330] For example, the terminal uses the absolute time of effectiveness of the coordinated transmission resource indicated in the RRC signaling as the actual time of effectiveness of the coordinated transmission resource. Alternatively, when receiving the RRC signaling, the terminal determines the time when the RRC signaling was sent, adds the time offset value indicated in the RRC signaling to the time when the RRC signaling was sent, and determines the actual time of effectiveness of the coordinated transmission resource. In some embodiments, the time offset value may also be specified by the protocol.

[0331] (3) The sending or receiving time of the PDCCH command used to activate the coordinated transmission resources.

[0332] For example, after receiving the PDCCH command for activating the coordinated transmission resource, the terminal determines the sending time of the PDCCH command and determines the sending time of the PDCCH command as the actual effectiveness time of the coordinated transmission resource.

[0333] For example, after receiving the PDCCH command for activating the coordinated transmission resources, the terminal determines the time of receiving the PDCCH command as the actual time of effectiveness of the coordinated transmission resources.

[0334] In some implementations, the network side uses the sending time of the PDCCH command as the actual effective time of the coordinated transmission resource, and the terminal side uses the receiving time of the PDCCH command as the actual effective time of the coordinated transmission resource.

[0335] (4) The time indicated by the activation time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

[0336] For example, the terminal uses the absolute time at which the coordinated transmission resource is effective as indicated in the PDCCH command as the actual time at which the coordinated transmission resource is effective. Alternatively, upon receiving the PDCCH command, the terminal determines the time at which the PDCCH command is sent, adds the time offset indicated in the PDCCH command to the time at which the PDCCH command is sent, and determines the actual time at which the coordinated transmission resource is effective. In some embodiments, the time offset value may also be specified by the protocol.

[0337] In some embodiments, the method further comprises:

[0338] determining cooperative transmission resources based on resource configuration of the third network node;

[0339] In which, when the coordinated transmission resources are allocated physical layer resources by RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

[0340] Specifically, the actual physical layer resource allocation for collaborative transmission (the absolute position of the physical layer time-frequency resources) needs to be determined based on the uplink and downlink resource configuration of a specific network node. The specific network node is called the third network node. It can be understood that the actual physical layer resource allocation of collaborative transmission resources corresponds to or is associated with the third network node.

[0341] For example, the coordinated transmission resources are allocated physical layer resources by RRC signaling, and the terminal performs time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the cell or TRP that sends the RRC signaling. That is, the time-frequency resource allocation specified in the RRC signaling corresponds to the cell or TRP that sends the RRC signaling.

[0342] For example, the coordinated transmission resources are allocated physical layer resources by RRC signaling, and a reference cell or reference TRP is specified in the RRC signaling. The terminal performs time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP, that is, the time-frequency resource allocation specified in the RRC signaling corresponds to the reference cell or reference TRP specified in the RRC signaling.

[0343] For example, the coordinated transmission resources are allocated physical layer resources by the PDCCH command, and the terminal performs time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the cell or TRP that sends the PDCCH command, that is, the time-frequency resource allocation specified in the PDCCH command corresponds to the cell or TRP that sends the PDCCH command.

[0344] For example, the physical layer resources of the coordinated transmission resources are allocated by the PDCCH command, and the reference cell or reference TRP is specified in the RRC signaling. The terminal performs time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP, that is, the time-frequency resource allocation specified in the PDCCH command corresponds to the reference cell or reference TRP specified in the RRC signaling.

[0345] For example, the coordinated transmission resources are allocated physical layer resources by the PDCCH command, and the reference cell or reference TRP is specified in the PDCCH command. The terminal performs time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP, that is, the time-frequency resource allocation specified in the PDCCH command corresponds to the reference cell or reference TRP specified in the PDCCH command.

[0346] In some embodiments, the method further comprises:

[0347] The third network node is determined as a timing synchronization reference network node.

[0348] Specifically, in order to better perform timing synchronization, the network side and the terminal side can determine the timing synchronization relationship of downlink transmission or uplink transmission based on the same timing synchronization reference network node. In some implementations, a third network node (such as the cell or TRP corresponding to the collaborative transmission resource allocation mentioned above) can be used as the timing synchronization reference network node.

[0349] FIG3 is a flow chart of a method for allocating coordinated transmission resources according to an embodiment of the present disclosure. The method is applied to a first network node. As shown in FIG3 , the method includes the following steps:

[0350] Step 300: Send radio resource control (RRC) signaling to the terminal. The RRC signaling is used to pre-configure cooperative transmission resources.

[0351] Specifically, collaborative transmission resources, i.e., resources used for collaborative transmission, refer to: downlink resources that send or participate in sending downlink data by other cells or other TRPs (i.e., non-current cells, non-current TRPs), and uplink resources that receive uplink data by other cells or other TRPs.

[0352] In some embodiments, the cooperative transmission resource is a resource that is periodically effective, or a resource that is effective once, or a resource that is effective a specified number of times.

[0353] In the embodiment of the present disclosure, the network side pre-configures cooperative transmission resources for the terminal through RRC signaling. After the terminal configures the pre-configured cooperative transmission resources on the network side, at the moment when the pre-configured cooperative transmission resources take effect, the terminal receives downlink data or sends uplink data in accordance with the physical layer resources and transmission format allocated for the pre-configured cooperative transmission resources. Correspondingly, each cell or TRP participating in the cooperative transmission on the network side also sends downlink data or receives uplink data in accordance with the physical layer resources and transmission format allocated in the pre-configured cooperative transmission resources at the moment when the pre-configured cooperative transmission resources take effect. In this way, even if there is a transmission delay in the interactive signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, the cooperative transmission of different cells or TRPs to one terminal can still be achieved.

[0354] In some embodiments, the RRC signaling includes one or more of the following information:

[0355] (1) Effective time information of cooperative transmission resources: This effective time information can be used to determine the time when the cooperative transmission resources actually take effect.

[0356] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0357] The absolute time at which the coordinated transport resource becomes effective; or,

[0358] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0359] For example, RRC signaling pre-configures the absolute effective time of the coordinated transmission resource, and the terminal determines the actual effective time of the coordinated transmission resource based on the absolute effective time. The absolute effective time can be a value expressed in units such as year, month, day, hour, minute, second, millisecond, etc., or a value expressed in units such as system frame number, subframe number, and time slot number.

[0360] For example, the absolute effective time of the cooperative transmission resources pre-configured by RRC signaling is a time deviation deltaT relative to the time when the RRC signaling is sent. When the terminal receives the RRC signaling, it determines the time when the RRC signaling is sent, adds the time when the RRC signaling is sent to the time when the RRC signaling is sent, and determines the actual effective time of the cooperative transmission resources by adding the time deviation value pre-configured in the RRC signaling.

[0361] (2) The cycle of collaborative transmission resources.

[0362] For example, the coordinated transmission resources pre-configured by RRC signaling are periodically effective resources, and the terminal periodically determines the start time of each coordinated transmission resource based on the effective time of the coordinated transmission resource and the period value of the coordinated transmission resource.

[0363] (3) The number of cooperative transmission resources in each cooperative transmission resource period, where the cooperative transmission resource period is the period of pre-configured cooperative transmission resources.

[0364] For example, assuming that the number of coordinated transmission resources preconfigured by RRC signaling in each coordinated transmission resource period is N, the terminal determines that there are N consecutive preconfigured resources in each coordinated transmission resource period starting from the start time of each coordinated transmission resource. If the preconfigured coordinated transmission resources are effective once, the number of preconfigured coordinated transmission resources is determined to be N.

[0365] (4) The number of times the collaborative transmission resource is effective.

[0366] For example, assuming that the number of times the RRC signaling pre-configured cooperative transmission resources are effective is K, the terminal determines that the cooperative transmission resources are effective for a specified number of times (i.e., K times), or determines that the cooperative transmission resources are valid within K periods (i.e., the number of effective times can also be understood as the number of effective periods).

[0367] (5) Physical layer resource configuration information of collaborative transmission resources.

[0368] This physical layer resource configuration information includes information such as time-frequency resource configuration and transmission mode. The transmission mode (or transmission format) includes information such as MCS, RV, and MIMO precoding matrix. Based on this physical layer resource configuration information, the terminal determines the actual physical layer resource allocation for each coordinated transmission resource within each coordinated transmission resource period, including the time-frequency resource location and transmission format (such as MCS and RV).

[0369] (6) Reference network node indication. This reference network node indication is used to indicate a reference network node (e.g., a reference cell or reference TRP). The actual physical layer resource allocation of the pre-configured coordinated transmission resources can be determined based on the uplink and downlink resource configuration of the reference network node. For example, the absolute location of the physical layer time-frequency resources of the coordinated transmission resources is determined based on the uplink and downlink resource configuration of the reference network node and the physical layer resource configuration information of the coordinated transmission resources carried in the pre-configured signaling.

[0370] In some embodiments, the reference network node indication may be an identifier of a reference network node, such as a cell identifier of a reference cell, a TRP identifier of a reference TRP, and the like.

[0371] For example, assuming that cell 1 and cell 2 participate in coordinated transmission, the downlink frequency and bandwidth of cell 1 are F1 and BW1 respectively, and the reference cell is cell 1, then the terminal determines the actual receiving transmission resources according to the downlink frequency configuration of cell 1 and the physical layer resource configuration information of the coordinated transmission resources. Cell 2 needs to obtain the downlink resource configuration of cell 1, combine the physical layer resource configuration information of the coordinated transmission resources, determine the transmission resources, and participate in the downlink transmission. Cell 1 performs downlink transmission according to the downlink resource configuration of this cell and the physical layer resource configuration information of the coordinated transmission resources.

[0372] (7) Pre-configured resource type indication: The pre-configured resource type indication is used to indicate that the currently configured pre-configured resource is a resource for cooperative transmission.

[0373] (8) Information about network nodes participating in cooperative transmission: The information about network nodes participating in cooperative transmission is used to indicate the network nodes participating in cooperative transmission, such as cells or TRPs participating in cooperative transmission.

[0374] In some embodiments, the information of the network nodes participating in the cooperative transmission may be an identifier of the network nodes participating in the cooperative transmission, such as a cell identifier or a TRP identifier.

[0375] (9) Identifier used to scramble cooperative transmission.

[0376] For example, the identifier is a radio network temporary identifier x-RNTI or a network-side high-layer identifier specifically used for scrambling cooperative transmission. The terminal descrambles (downlink) or scrambles (uplink) the received signal based on the identifier, for transmission that can be uniquely identified by both the network and the terminal.

[0377] In some embodiments, the first network node includes any of the following:

[0378] (1) Primary cell under CA.

[0379] For example, the terminal receives RRC signaling in the main cell under CA, and the RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (that is, not the main cell under CA), and uplink resources that receive uplink data by other cells or TRP.

[0380] (2) The primary cell of the primary base station under DC.

[0381] For example, the terminal receives RRC signaling in the main cell of the main base station under DC, and the RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (that is, the main cell of the main base station other than the DC), and uplink resources that receive uplink data by other cells or TRP.

[0382] (3) The primary cell of the secondary base station under DC.

[0383] For example, the terminal receives RRC signaling in the main cell of the secondary base station under DC, and the RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (that is, the main cell of the secondary base station not under the DC), and uplink resources that receive uplink data by other cells or TRP.

[0384] (4) Primary cell in TAG.

[0385] For example, the terminal receives RRC signaling in the main cell in a TAG, and the RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., not the main cell in the TAG), and uplink resources that receive uplink data by other cells or TRPs.

[0386] (5) Any cell or TRP to which the terminal is currently connected.

[0387] For example, the terminal receives RRC signaling in any cell or any TRP currently connected, and the RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., cells or TRPs not currently connected), and uplink resources that receive uplink data by other cells or TRPs.

[0388] (6) The distributed data unit to which any TRP to which the terminal is currently connected is connected. This distributed data unit can be a DU or a DDU.

[0389] For example, the terminal receives RRC signaling in the DU or DDU connected to any currently connected TRP. The RRC signaling is used to pre-configure cooperative transmission resources. The pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., TRPs that are not currently connected), and uplink resources that receive uplink data by other cells or TRPs.

[0390] (7) The source cell or source TRP for collaborative transmission.

[0391] The source cell or source TRP refers to the dominant cell or dominant TRP for collaborative transmission. Relatively speaking, other cells or TRPs participating in collaborative transmission mainly coordinate and assist the source cell or source TRP in uplink and downlink data transmission.

[0392] For example, the terminal receives RRC signaling in the source cell or source TRP performing collaborative transmission. The RRC signaling is used to pre-configure collaborative transmission resources. The pre-configured collaborative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., not the source cell or source TRP), and uplink resources that receive uplink data by other cells or TRPs.

[0393] (8) The distributed data unit to which the source TRP for coordinated transmission is connected. The distributed data unit can be a DU or a DDU.

[0394] For example, the terminal receives RRC signaling from the DU or DDU connected to the source TRP performing collaborative transmission. The RRC signaling is used to pre-configure collaborative transmission resources. The pre-configured collaborative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., not the source TRP), and uplink resources that receive uplink data by other cells or TRPs.

[0395] The information for pre-configuring the coordinated transmission resources (or pre-configuration information of the coordinated transmission resources) contained in the RRC signaling sent by the first network node is not limited in the specific determination method of this disclosure. For example, the first network node may determine the pre-configuration information and send it to the terminal. At the same time, the first network node may also send the pre-configuration information to other network nodes participating in the coordinated transmission. For another example, other network nodes may determine the pre-configuration information and send it to the first network node. At the same time, the other network nodes may also send the pre-configuration information to other network nodes participating in the coordinated transmission. The network nodes participating in the coordinated transmission need to have the same understanding of the pre-configured coordinated transmission resources.

[0396] The data transmission method provided by the embodiment of the present disclosure pre-configures resources for collaborative transmission for the terminal on the network side, and the terminal receives downlink data or sends uplink data based on the pre-configured collaborative transmission resources. Even if there is a transmission delay in the interactive signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, collaborative transmission of different cells or TRPs to one terminal can still be achieved, thereby improving transmission performance.

[0397] In some embodiments, the method further comprises:

[0398] A physical downlink control channel (PDCCH) command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resources.

[0399] Specifically, in some implementations, after the network side pre-configures the coordinated transmission resources via RRC signaling, the coordinated transmission resources are activated, and the terminal can use the coordinated transmission resources for uplink and downlink data transmission. In some implementations, after the network side pre-configures the coordinated transmission resources via RRC signaling, the coordinated transmission resources are initially inactive, and the network side activates the coordinated transmission resources via a PDCCH command.

[0400] In some embodiments, the PDCCH order includes one or more of the following information:

[0401] (1) Effective time information of cooperative transmission resources: This effective time information can be used to determine the time when the cooperative transmission resources actually take effect.

[0402] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0403] The absolute time at which the coordinated transport resource becomes effective; or,

[0404] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0405] For example, the DCI indicates the absolute time of effectiveness of the pre-configured coordinated transmission resource, and the terminal determines the actual time of effectiveness of the coordinated transmission resource based on the absolute time of effectiveness. The absolute time of effectiveness can be a value expressed in units such as year, month, day, hour, minute, second, millisecond, etc., or a value expressed in units such as the system frame number, subframe number, and time slot number.

[0406] For example, the DCI indicates the time deviation deltaT of the absolute effective time of the pre-configured collaborative transmission resource relative to the DCI sending time. When the terminal receives the DCI, it determines the time when the DCI is sent, adds the DCI sending time to the time deviation value indicated in the DCI, and determines the actual effective time of the collaborative transmission resource.

[0407] (2) The number of cooperative transmission resources in each cooperative transmission resource period.

[0408] For example, assuming that the PDCCH command indicates that the number of coordinated transmission resources in each coordinated transmission resource period is N, the terminal determines that there are N consecutive pre-configured resources in each coordinated transmission resource period starting from the start time of each coordinated transmission resource. If the pre-configured coordinated transmission resources are effective once, the number of coordinated transmission resources is determined to be N.

[0409] (3) The number of times the collaborative transmission resource is effective.

[0410] For example, assuming that the PDCCH command indicates that the number of times the coordinated transmission resource is effective is K, the terminal determines that the coordinated transmission resource is effective a specified number of times (i.e., K times), or determines that the coordinated transmission resource is valid within K periods (i.e., the number of effective times can also be understood as the number of effective periods).

[0411] In some embodiments, if the RRC signaling used to pre-configure the coordinated transmission resource and the PDCCH command used to activate the coordinated transmission resource do not configure the number of times the coordinated transmission resource is valid and the period value of the coordinated transmission resource is not configured, the coordinated transmission resource is valid once.

[0412] (4) Physical layer resource allocation information of collaborative transmission resources.

[0413] The physical layer resource allocation information includes information such as time-frequency resource allocation and transmission mode. The transmission mode (or transmission format) includes MCS and RV. Based on this physical layer resource allocation information, the terminal determines the actual physical layer resource allocation for each coordinated transmission resource within each coordinated transmission resource period, including the time-frequency resource location and transmission format (such as MCS and RV).

[0414] (5) Reference network node indication. The reference network node indication is used to indicate a reference network node (e.g., a reference cell or reference TRP). The actual physical layer resource allocation of the pre-configured coordinated transmission resources can be determined based on the uplink and downlink resource configuration of the reference network node. For example, the absolute position of the physical layer time-frequency resources of the coordinated transmission resources is determined based on the uplink and downlink resource configuration of the reference network node and the physical layer resource allocation information of the coordinated transmission resources carried in the activation command.

[0415] In some embodiments, the reference network node indication may be an identifier of a reference network node, such as a cell identifier of a reference cell, a TRP identifier of a reference TRP, and the like.

[0416] For example, assuming that cell 1 and cell 2 participate in coordinated transmission, the downlink frequency and bandwidth of cell 1 are F1 and BW1 respectively, and the reference cell is cell 1, the terminal determines the actual receiving transmission resources according to the downlink frequency configuration of cell 1 and the physical layer resource allocation information of the coordinated transmission resources in the activation command. Cell 2 needs to obtain the downlink resource configuration of cell 1, combine the physical layer resource allocation information of the coordinated transmission resources in the activation command, determine the transmission resources, and participate in the downlink transmission. Cell 1 performs downlink transmission according to the downlink resource configuration of this cell and the physical layer resource allocation information of the coordinated transmission resources in the activation command.

[0417] (6) Information about network nodes participating in cooperative transmission: The information about network nodes participating in cooperative transmission is used to indicate the network nodes participating in cooperative transmission, such as cells or TRPs participating in cooperative transmission.

[0418] In some embodiments, the information of the network nodes participating in the cooperative transmission may be an identifier of the network nodes participating in the cooperative transmission, such as a cell identifier or a TRP identifier.

[0419] In some embodiments, the method further comprises:

[0420] Through the interface between distributed data units, the interface between the central control plane node and the distributed data unit, or the interface between base stations, the pre-configuration information of the coordinated transmission resources and / or the activation information of the coordinated transmission resources are exchanged with other network nodes participating in the coordinated transmission.

[0421] Specifically, the network nodes participating in the cooperative transmission need to have the same understanding of the pre-configured cooperative transmission resources, and there are multiple ways to specifically exchange cooperative transmission resource information.

[0422] For example, the cells or TRPs participating in the coordinated transmission belong to different distributed data units (DU or DDU), and the pre-configuration information and / or activation information of the coordinated transmission resources are exchanged through the interface between the distributed data units.

[0423] For example, the cells or TRPs participating in the coordinated transmission belong to different distributed data units (DU or DDU), and the central control plane node (CU or CCU) exchanges the pre-configuration information and / or activation information of the coordinated transmission resources through the interface between the central control plane node and the distributed data unit (similar to the F1 interface of 5G).

[0424] For example, the cells or TRPs participating in the collaborative transmission belong to different base stations, and the pre-configuration information and / or activation information of the collaborative transmission resources are exchanged through the interface between the base stations (similar to the Xn interface of 5G).

[0425] In some embodiments, the method further comprises:

[0426] Any of the following moments is determined as the effective moment of the cooperative transmission resource:

[0427] The sending or receiving time of RRC signaling;

[0428] In RRC signaling, the time indicated by the validity time information of the coordinated transmission resource;

[0429] The sending or receiving time of the PDCCH command for activating the coordinated transmission resources;

[0430] The time indicated by the activation time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

[0431] In some embodiments, the method further comprises:

[0432] determining cooperative transmission resources based on resource configuration of the third network node;

[0433] In which, when the coordinated transmission resources are allocated physical layer resources by RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

[0434] Specifically, the actual physical layer resource allocation for collaborative transmission (the absolute position of the physical layer time-frequency resources) needs to be determined based on the uplink and downlink resource configuration of a specific network node. The specific network node is called the third network node. It can be understood that the actual physical layer resource allocation of collaborative transmission resources corresponds to or is associated with the third network node.

[0435] For example, the coordinated transmission resources are allocated physical layer resources by RRC signaling, and the network side determines the time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the cell or TRP that sends the RRC signaling; or, determines the time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP specified in the RRC signaling.

[0436] For example, the coordinated transmission resources are allocated physical layer resources by the PDCCH command, and the network side determines the time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the cell or TRP that sends the PDCCH command; or, determines the time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP specified in the RRC signaling; or, determines the time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP specified in the PDCCH command.

[0437] In some embodiments, the method further comprises:

[0438] The third network node is determined as a timing synchronization reference network node.

[0439] Specifically, in order to better perform timing synchronization, the network side and the terminal side can determine the timing synchronization relationship of downlink transmission or uplink transmission based on the same timing synchronization reference network node. In some implementations, a third network node can be used as the timing synchronization reference network node.

[0440] The methods provided in the various embodiments of the present disclosure are based on the same application concept, so the implementation of each method can refer to each other, and the repeated parts will not be repeated.

[0441] The following describes the methods provided in the above embodiments of the present disclosure through examples of specific application scenarios.

[0442] Example 1: RRC signaling pre-configures and activates cooperative transmission resources, and the cooperative transmission resources take effect periodically.

[0443] Base station side process:

[0444] Step 1: The base station sends RRC signaling to the terminal to pre-configure cooperative transmission resources.

[0445] (1) The base station-side node that sends the RRC signaling is any of the following:

[0446] a) A specific cell: such as a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0447] b) Any cell or TRP to which the terminal is currently connected, or the DU / DDU connected to the TRP.

[0448] c) The source cell or source TRP that performs coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0449] (2) The RRC signaling includes one or more of the following information:

[0450] a) The absolute time at which the coordinated transmission resource takes effect;

[0451] b) the time offset deltaT between the time when the coordinated transmission resource takes effect and the time when the RRC signaling is sent (optional, mutually exclusive with a));

[0452] c) Period of coordinated transmission resources (required);

[0453] d) the number N of pre-configured resources in each cooperative transmission resource period (optional);

[0454] e) Physical layer resource configuration of coordinated transmission resources, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory);

[0455] f) Reference cell or reference TRP (optional);

[0456] g) pre-configured resource type indication, indicating that the currently configured pre-configured resource is a resource for coordinated transmission (optional);

[0457] h) Cells or TRPs participating in the coordinated transmission (optional);

[0458] i) An identifier used to scramble the coordinated transmission, such as x-RNTI, and a network-side high-layer identifier (optional).

[0459] Step 2: At the moment the coordinated transmission resource takes effect, the cell or TRP participating in the coordinated transmission on the base station side sends a downlink transmission or receives an uplink transmission according to the physical layer resources and transmission format allocated by the coordinated transmission resource. The timing synchronization relationship for the downlink or uplink transmission is determined based on the timing synchronization relationship between the network node associated with the physical layer resources allocated for the coordinated transmission and the terminal. The network node is specifically the reference cell or reference TRP configured by RRC signaling, or the cell or TRP sending the RRC signaling.

[0460] Terminal side process:

[0461] Step 1: Receive RRC signaling of pre-configured coordinated transmission resources sent by the base station side.

[0462] (1) The RRC signaling is received on any of the following base station-side nodes:

[0463] a) The terminal receives the RRC signaling in a specific cell, where the specific cell is a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0464] b) The terminal receives the RRC signaling in any cell or TRP currently connected, or in the DU / DDU connected to the TRP;

[0465] c) The terminal receives the RRC signaling from the source cell or source TRP that can perform collaborative transmission, or the DU / DDU connected to the source TRP.

[0466] (2) The RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:

[0467] a) Absolute effective time of the coordinated transmission resource (optional, mutually exclusive with b)). The terminal determines the actual effective time of the coordinated transmission resource based on this parameter;

[0468] b) a time offset deltaT of the time when the coordinated transmission resource takes effect relative to the time when the RRC signaling is sent (optional, mutually exclusive with a)). When the terminal receives the RRC signaling, it determines the time when the RRC signaling is sent and adds the time offset deltaT to determine the actual time when the coordinated transmission resource takes effect;

[0469] c) Period of the coordinated transmission resource (mandatory): The terminal periodically determines the start time of each coordinated transmission resource based on the effective time and period value of the coordinated transmission resource;

[0470] d) the number N of pre-configured resources in each cooperative transmission resource period (optional), where the terminal determines that there are N consecutive pre-configured resources in each cooperative transmission resource period starting from the start time of each cooperative transmission resource;

[0471] e) Physical layer resource configuration of the coordinated transmission resources, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory). The terminal determines the actual physical layer resource allocation of each coordinated transmission resource in each coordinated transmission resource period, including the time-frequency resource location, transmission format MCS, RV, etc.

[0472] f) Reference cell or reference TRP (optional): The terminal determines the actual physical layer resource allocation of the coordinated transmission resources in combination with e) and f). The actual physical layer resource allocation is associated with the uplink and downlink resource configuration of a specific cell or TRP. If this option is configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the pre-configured reference cell or reference TRP. If this option is not configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the cell or TRP that sends the RRC signaling.

[0473] g) pre-configured resource type indication, indicating that the currently configured pre-configured resource is a resource for coordinated transmission (optional);

[0474] h) Cells or TRPs participating in coordinated transmission (optional). If this parameter is available, the terminal determines the cells or TRPs participating in coordinated transmission based on this parameter.

[0475] i) An identifier used to scramble the collaborative transmission, such as x-RNTI, a network-side high-level identifier (optional). If this parameter is present, the terminal descrambles (downlink) or scrambles (uplink) the received signal based on the identifier, for transmission that can be uniquely identified by both the base station side and the terminal side.

[0476] Step 2: After the coordinated transmission resources are preconfigured on the network side, the terminal receives downlink transmissions or sends uplink transmissions when the coordinated transmission resources take effect, according to the physical layer resources and transmission format allocated for the coordinated transmission resources. The timing synchronization relationship for the downlink or uplink transmission is determined based on the timing synchronization relationship between the terminal and the network node associated with the physical resources allocated for the coordinated transmission. The network node is specifically the reference cell or reference TRP configured by RRC signaling, or the cell or TRP that sends the RRC signaling.

[0477] Example 2: RRC signaling pre-configures and activates cooperative transmission resources, and the cooperative transmission resources take effect once or a specified number of times.

[0478] Base station side process:

[0479] Step 1: The base station sends RRC signaling to the terminal to pre-configure cooperative transmission resources.

[0480] (1) The base station-side node that sends the RRC signaling is any of the following:

[0481] a) A specific cell: such as a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0482] b) Any cell or TRP to which the terminal is currently connected, or the DU / DDU connected to the TRP.

[0483] c) The source cell or source TRP that performs coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0484] (2) The RRC signaling includes one or more of the following information:

[0485] a) The absolute time when the coordinated transmission resource takes effect (optional, mutually exclusive with b));

[0486] b) the time offset deltaT between the time when the coordinated transmission resource takes effect and the time when the RRC signaling is sent (optional, mutually exclusive with a));

[0487] c) Period of cooperative transmission resources (optional);

[0488] d) the number N of pre-configured resources in each cooperative transmission resource period (optional);

[0489] e) The number of times the cooperative transmission resource is effective K (optional);

[0490] f) Physical layer resource configuration of coordinated transmission resources, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory);

[0491] g) Reference cell or reference TRP (optional);

[0492] h) Pre-configured resource type indication, indicating that the currently configured pre-configured resource is a resource for collaborative transmission (optional)

[0493] i) Cells or TRPs participating in the coordinated transmission (optional);

[0494] j) Identifier used for scrambling collaborative transmission, such as x-RNTI, network side high-layer identifier (optional).

[0495] Step 2: At the moment the coordinated transmission resource takes effect, the cell or TRP participating in the coordinated transmission on the base station side sends a downlink transmission or receives an uplink transmission according to the physical layer resources and transmission format allocated by the coordinated transmission resource. The timing synchronization relationship for the downlink or uplink transmission is determined based on the timing synchronization relationship between the network node associated with the physical layer resources allocated for the coordinated transmission and the terminal. The network node is specifically the reference cell or reference TRP configured by RRC signaling, or the cell or TRP sending the RRC signaling.

[0496] Terminal side process:

[0497] Step 1: Receive RRC signaling of pre-configured coordinated transmission resources sent by the base station side.

[0498] (1) The RRC signaling is received on any of the following base station-side nodes:

[0499] a) The terminal receives the RRC signaling in a specific cell, where the specific cell is a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0500] b) The terminal receives the RRC signaling in any cell or TRP currently connected, or in the DU / DDU connected to the TRP;

[0501] c) The terminal receives the RRC signaling from the source cell or source TRP that can perform collaborative transmission, or the DU / DDU connected to the source TRP.

[0502] (2) The RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:

[0503] a) Absolute effective time of the coordinated transmission resource (optional, mutually exclusive with b)). The terminal determines the actual effective time of the coordinated transmission resource based on this parameter;

[0504] b) a time offset deltaT of the time when the coordinated transmission resource takes effect relative to the time when the RRC signaling is sent (optional, mutually exclusive with a)). When the terminal receives the RRC signaling, it determines the time when the RRC signaling is sent and adds the time offset deltaT to determine the actual time when the coordinated transmission resource takes effect;

[0505] c) Period of the coordinated transmission resource (optional). This item is configured together with the "Number of times the coordinated transmission resource is enabled, K," in item e). The terminal periodically determines the start time of each coordinated transmission resource based on the effective time and period of the coordinated transmission resource.

[0506] d) Number of pre-configured resources N (optional): The terminal determines, from the start time of each coordinated transmission resource, if the coordinated transmission resource is effective periodically or within several cycles, there are N consecutive pre-configured resources in each coordinated transmission resource period; if the coordinated transmission resource is effective once, the number of pre-configured resources is determined to be N;

[0507] e) The number of times the coordinated transmission resource is valid (K) (optional). If this parameter is configured, the coordinated transmission resource is valid for K periods. If this parameter is not configured, the coordinated transmission resource is valid once.

[0508] f) Physical layer resource configuration of coordinated transmission resources, including time-frequency resource configuration and / or transmission mode (MCS, RV) (mandatory). The terminal determines the actual physical layer resource allocation of each coordinated transmission resource within each coordinated transmission resource period, including the time-frequency resource location, transmission format MCS, RV, etc.

[0509] g) Reference cell or reference TRP (optional): The terminal determines the actual physical layer resource allocation of the coordinated transmission resources in combination with f) and g). The actual physical layer resource allocation is associated with the uplink and downlink resource configuration of a specific cell or TRP. If this option is configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the pre-configured reference cell or reference TRP. If this option is not configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the cell or TRP that sends the RRC signaling.

[0510] h) Pre-configured resource type indication, indicating that the currently configured pre-configured resource is a resource for coordinated transmission (optional);

[0511] i) Cells or TRPs participating in coordinated transmission (optional). If this parameter is available, the terminal determines the cells or TRPs participating in coordinated transmission based on this parameter.

[0512] j) Identifier used to scramble collaborative transmission resources, such as x-RNTI, network-side high-level identifier (optional). If this parameter is present, the terminal descrambles (downlink) or scrambles (uplink) the received signal based on the identifier, and is used for transmission that can be uniquely identified by both the base station side and the terminal side.

[0513] Step 2: When the coordinated transmission resource takes effect, the terminal receives a downlink transmission or sends an uplink transmission according to the physical layer resources and transmission format allocated for the coordinated transmission resource. The timing synchronization relationship of the downlink or uplink transmission is determined based on the timing synchronization relationship between the terminal and the network node associated with the physical resource allocated for the coordinated transmission. The network node is specifically the reference cell or reference TRP configured by RRC signaling, or the cell or TRP that sends the RRC signaling.

[0514] Example 3: RRC signaling pre-configures coordinated transmission resources, PDCCH commands activate the coordinated transmission resources, and the coordinated transmission resources take effect periodically.

[0515] Base station side process:

[0516] Step 1: The base station sends RRC signaling to the terminal to pre-configure cooperative transmission resources.

[0517] (1) The base station-side node that sends the RRC signaling is any of the following:

[0518] a) A specific cell: such as a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0519] b) Any cell or TRP to which the terminal is currently connected, or the DU / DDU connected to the TRP.

[0520] c) The source cell or source TRP that performs coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0521] (2) The RRC signaling includes one or more of the following information:

[0522] a) The period of coordinated transmission resources (required);

[0523] b) the number N of pre-configured resources in each cooperative transmission resource period (optional);

[0524] c) Reference cell or reference TRP (optional);

[0525] d) Pre-configured resource type indication, indicating that the currently configured pre-configured resource is a resource for coordinated transmission (optional);

[0526] e) Cells or TRPs participating in the coordinated transmission (optional);

[0527] f) Identifier used for scrambling collaborative transmission, such as x-RNTI, network side high-layer identifier (optional).

[0528] Step 2: The base station sends a PDCCH command to the terminal to activate the pre-configured coordinated transmission resources.

[0529] (1) The base station-side node that sends the PDCCH command is any of the following:

[0530] a) A specific cell: such as a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0531] b) Any cell or TRP to which the terminal is currently connected, or the DU / DDU connected to the TRP.

[0532] c) The source cell or source TRP that performs coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0533] (2) The PDCCH command for activating the pre-configured coordinated transmission resources includes one or more of the following information:

[0534] a) The absolute effective time of the cooperative transmission resource (optional), which is mutually exclusive with b);

[0535] b) deltaT (optional), the time offset between the effective time of the coordinated transmission resource and the time when the PDCCH command is sent, which is mutually exclusive with a);

[0536] c) The number of pre-configured resources N in each cooperative transmission resource period (optional). If the RRC signaling has been configured in step 1, this parameter may not be configured;

[0537] d) Physical layer resource configuration of coordinated transmission resources, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory);

[0538] e) Reference cell or reference TRP (optional). If RRC signaling has been configured in step 1, this parameter does not need to be configured.

[0539] f) Cells or TRPs participating in coordinated transmission (optional). If the RRC signaling has been configured in step 1, this parameter may not be configured.

[0540] Step 3: At the moment the coordinated transmission resource takes effect, the cell or TRP participating in the coordinated transmission on the base station side sends a downlink transmission or receives an uplink transmission according to the physical layer resources and transmission format allocated by the coordinated transmission resource. The timing synchronization relationship for the downlink or uplink transmission is determined based on the timing synchronization relationship between the network node associated with the physical layer resources allocated for the coordinated transmission and the terminal. The network node is specifically the reference cell or reference TRP indicated by RRC signaling or PDCCH command, or the cell or TRP that sends the RRC signaling or PDCCH command.

[0541] Terminal side process:

[0542] Step 1: Receive RRC signaling of pre-configured coordinated transmission resources sent by the base station side.

[0543] (1) The RRC signaling is received on any of the following base station-side nodes:

[0544] a) The terminal receives the RRC signaling in a specific cell, where the specific cell is a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0545] b) The terminal receives the RRC signaling in any cell or TRP currently connected, or in the DU / DDU connected to the TRP;

[0546] c) The terminal receives the RRC signaling from the source cell or source TRP that can perform collaborative transmission, or the DU / DDU connected to the source TRP.

[0547] (2) The RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:

[0548] a) Period of coordinated transmission resources (required). When a pre-configured coordinated transmission resource is activated by a PDCCH command, the resource takes effect periodically according to the configured period value.

[0549] b) the number of pre-configured resources N in each coordinated transmission resource period (optional). When the coordinated transmission resource is activated by the PDCCH command, the terminal determines that there are N consecutive pre-configured resources in each coordinated transmission resource period starting from the start time of each coordinated transmission resource;

[0550] c) Reference cell or reference TRP (optional);

[0551] d) Pre-configured resource type indication, indicating that the currently configured pre-configured resource is a resource for coordinated transmission (optional);

[0552] e) Cells or TRPs participating in the coordinated transmission (optional);

[0553] f) An identifier used to scramble the coordinated transmission resources, such as x-RNTI, and a network-side high-layer identifier (optional).

[0554] Step 2: The terminal receives the PDCCH command sent by the base station and activates the pre-configured coordinated transmission resources.

[0555] (1) The base station-side node that sends the PDCCH command is any of the following:

[0556] a) The terminal receives the PDCCH command in a specific cell, where the specific cell is a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0557] b) The terminal receives the PDCCH command in any cell or TRP to which it is currently connected, or in the DU / DDU to which the TRP is connected;

[0558] c) The terminal receives the PDCCH command from the source cell or source TRP that can perform coordinated transmission, or the DU / DDU connected to the source TRP.

[0559] (2) The PDCCH command for activating the pre-configured coordinated transmission resources includes one or more of the following information, and the corresponding operations of the terminal include:

[0560] a) Absolute effective time of the coordinated transmission resource (optional, mutually exclusive with b)). The terminal determines the actual effective time of the coordinated transmission resource based on this parameter;

[0561] b) deltaT (optional, mutually exclusive with a)) is the time offset between the effective time of the coordinated transmission resource and the time when the PDCCH command is sent. The terminal determines the actual effective time of the coordinated transmission resource based on this parameter;

[0562] c) the number of pre-configured resources N in each coordinated transmission resource period (optional). This parameter may not be configured if it has been configured by RRC signaling in step 1. The terminal determines that there are N consecutive pre-configured resources in each coordinated transmission resource period based on the number of pre-configured resources indicated in the RRC signaling or PDCCH command.

[0563] d) Physical layer resource configuration of the coordinated transmission resources, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory). The terminal determines the actual physical layer resource allocation of each pre-configured resource within each coordinated transmission resource period, including the time-frequency resource location, transmission format MCS, RV, etc.

[0564] e) Reference cell or reference TRP (optional). This parameter may not be configured if RRC signaling has been configured in step 1. The terminal determines the actual physical layer resource allocation of the coordinated transmission resources in combination with d) and e). The actual physical layer resource allocation is associated with the uplink and downlink resource configuration of a specific cell or TRP. If the base station indicates the reference cell or reference TRP using RRC signaling or PDCCH command, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the reference cell or reference TRP indicated by the RRC signaling or PDCCH command. If no reference cell or reference TRP is configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the cell or TRP that sends the PDCCH command.

[0565] f) Cells or TRPs participating in coordinated transmission (optional). This parameter may not be configured if RRC signaling has been configured in step 1. If this parameter is present, the terminal determines the cells or TRPs participating in coordinated transmission based on the cells or TRPs participating in coordinated transmission indicated by RRC signaling or PDCCH commands.

[0566] Step 3. After the coordinated transmission resources take effect, the terminal descrambles the downlink transmission data based on the physical layer resources and transmission format allocated for the coordinated transmission resources on each coordinated transmission resource, or scrambles the uplink transmission data based on the identifier if the RRC signaling indicates an identifier for scrambling the coordinated transmission. The timing synchronization relationship for downlink or uplink transmission is determined based on the timing synchronization relationship between the network node associated with the physical resources allocated for the coordinated transmission and the terminal. The network node is specifically the reference cell or reference TRP indicated by the RRC signaling or PDCCH command, or the cell or TRP that sends the RRC signaling or PDCCH command.

[0567] Example 4: RRC signaling pre-configures coordinated transmission resources, PDCCH commands activate the coordinated transmission resources, and the coordinated transmission resources take effect once or a specified number of times.

[0568] Base station side process:

[0569] Step 1: The base station sends RRC signaling to the terminal to pre-configure cooperative transmission resources.

[0570] (1) The base station-side node that sends the RRC signaling is any of the following:

[0571] a) A specific cell: such as a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0572] b) Any cell or TRP to which the terminal is currently connected, or the DU / DDU connected to the TRP.

[0573] c) The source cell or source TRP that performs coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0574] (2) The RRC signaling includes one or more of the following information:

[0575] a) Period of cooperative transmission resources (optional);

[0576] b) the number N of pre-configured resources in each cooperative transmission resource period (optional);

[0577] c) The number of times the coordinated transmission resource is enabled K (optional);

[0578] d) Reference cell or reference TRP (optional);

[0579] e) Pre-configured resource type indication, indicating that the currently configured pre-configured resource is a resource for coordinated transmission (optional);

[0580] f) Cells or TRPs participating in the coordinated transmission (optional);

[0581] g) An identifier used to scramble the coordinated transmission resources, such as x-RNTI, and a network-side high-layer identifier (optional).

[0582] Step 2: The base station sends a PDCCH command to the terminal to activate the pre-configured coordinated transmission resources.

[0583] (1) The base station-side node that sends the PDCCH command is any of the following:

[0584] a) A specific cell: such as a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0585] b) Any cell or TRP to which the terminal is currently connected, or the DU / DDU connected to the TRP.

[0586] c) The source cell or source TRP that performs coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0587] (2) The PDCCH command for activating the pre-configured coordinated transmission resources includes one or more of the following information:

[0588] a) The absolute effective time of the cooperative transmission resource (optional), which is mutually exclusive with b);

[0589] b) deltaT (optional), the time offset between the effective time of the coordinated transmission resource and the time when the PDCCH command is sent, which is mutually exclusive with a);

[0590] c) The number of pre-configured resources N in each cooperative transmission resource period (optional). If the RRC signaling has been configured in step 1, this parameter may not be configured;

[0591] d) The number of times the coordinated transmission resource is enabled, K (optional). If the RRC signaling has been configured in step 1, this parameter may not be configured.

[0592] e) Physical layer resource allocation of coordinated transmission resources, including time-frequency resource allocation, and / or transmission mode (MCS, RV), etc. (mandatory);

[0593] f) Reference cell or reference TRP (optional). If RRC signaling has been configured in step 1, this parameter does not need to be configured.

[0594] g) Cells or TRPs participating in coordinated transmission (optional). If the RRC signaling has been configured in step 1, this parameter may not be configured.

[0595] Step 3: At each cooperative transmission resource moment, the base station-side cell or TRP participating in the coordinated transmission sends a downlink transmission or receives an uplink transmission according to the physical layer resources and transmission format allocated by the coordinated transmission resource. The timing synchronization relationship for the downlink or uplink transmission is determined based on the timing synchronization relationship between the network node associated with the physical layer resources allocated for the coordinated transmission and the terminal. The network node is specifically the reference cell or reference TRP indicated by RRC signaling or PDCCH command, or the cell or TRP that sends the RRC signaling or PDCCH command.

[0596] Terminal side process:

[0597] Step 1: Receive RRC signaling of pre-configured coordinated transmission resources sent by the base station side.

[0598] (1) The RRC signaling is received on any of the following base station-side nodes:

[0599] a) The terminal receives the RRC signaling in a specific cell, where the specific cell is a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0600] b) The terminal receives the RRC signaling in any cell or TRP currently connected, or in the DU / DDU connected to the TRP;

[0601] c) The terminal receives the RRC signaling from the source cell or source TRP that can perform collaborative transmission, or the DU / DDU connected to the source TRP.

[0602] (2) The RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:

[0603] a) The period of the coordinated transmission resource (optional). If the pre-configured coordinated transmission resource takes effect only once, do not configure this parameter.

[0604] b) the number of pre-configured resources N in each coordinated transmission resource period (optional). When the coordinated transmission resource is activated by the PDCCH command, the terminal determines that there are N consecutive pre-configured resources in each coordinated transmission resource period starting from the start time of each coordinated transmission resource;

[0605] c) The number of times K that cooperative transmission resources are enabled (optional), configured at the same time as a);

[0606] d) Reference cell or reference TRP (optional);

[0607] e) Pre-configured resource type indication, indicating that the currently configured pre-configured resource is a resource for coordinated transmission (optional);

[0608] f) Cells or TRPs participating in the coordinated transmission (optional);

[0609] g) Identifier used for scrambling collaborative transmission, such as x-RNTI, network side high-layer identifier (optional).

[0610] Step 2: Receive the PDCCH command sent by the base station to the terminal, and activate the pre-configured coordinated transmission resources.

[0611] (1) The base station-side node that sends the PDCCH command is any of the following:

[0612] a) The terminal receives the PDCCH command in a specific cell, where the specific cell is a primary cell in CA, a primary cell of a primary base station in DC, a primary cell of a secondary base station in DC, or a primary cell in a TAG;

[0613] b) The terminal receives the PDCCH command in any cell or TRP to which it is currently connected, or in the DU / DDU to which the TRP is connected;

[0614] c) The terminal receives the PDCCH command from the source cell or source TRP that can perform coordinated transmission, or the DU / DDU connected to the source TRP.

[0615] (2) The PDCCH command for activating the pre-configured coordinated transmission resources includes one or more of the following information, and the corresponding operations of the terminal include:

[0616] a) Absolute effective time of the coordinated transmission resource (optional, mutually exclusive with b)). The terminal determines the actual effective time of the coordinated transmission resource based on this parameter;

[0617] b) deltaT (optional, mutually exclusive with a)) is the time offset between the effective time of the coordinated transmission resource and the time when the PDCCH command is sent. The terminal determines the actual effective time of the coordinated transmission resource based on this parameter;

[0618] c) the number of pre-configured resources N in each coordinated transmission resource period (optional). This parameter may not be configured if it has been configured by RRC signaling in step 1. The terminal determines that there are N consecutive pre-configured resources in each coordinated transmission resource period based on the number of pre-configured resources indicated in the RRC signaling or PDCCH command.

[0619] d) The number of times the coordinated transmission resource is valid, K (optional). This parameter may not be configured if it has been configured by RRC signaling in step 1. Based on the coordinated transmission resource period configured by RRC signaling and the number of times the coordinated transmission resource is valid, K, indicated in the RRC signaling or PDCCH command, the coordinated transmission resource is valid for K periods, and the period value.

[0620] e) Physical layer resource configuration of coordinated transmission resources, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory). The terminal determines the actual physical layer resource allocation of each pre-configured resource within each coordinated transmission resource period, including the time-frequency resource location, transmission format MCS, RV, etc.

[0621] f) Reference cell or reference TRP (optional). This parameter may not be configured if RRC signaling has been configured in step 1. The terminal determines the actual physical layer resource allocation of the coordinated transmission resources in combination with e) and f). The actual physical layer resource allocation is associated with the uplink and downlink resource configuration of a specific cell or TRP. If the base station indicates the reference cell or reference TRP using RRC signaling or PDCCH command, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the reference cell or reference TRP indicated by the RRC signaling or PDCCH command. If no reference cell or reference TRP is configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the cell or TRP that sends the PDCCH command.

[0622] g) Cells or TRPs participating in coordinated transmission (optional). This parameter may not be configured if RRC signaling is configured in step 1. If this parameter is present, the terminal determines the cells or TRPs participating in coordinated transmission based on the cells or TRPs participating in coordinated transmission indicated by RRC signaling or PDCCH commands.

[0623] Step 3. After the coordinated transmission resource is activated, the terminal descrambles the downlink transmission data based on the physical layer resources and transmission format allocated for the coordinated transmission resource, or scrambles the uplink transmission data based on the identifier if the RRC signaling indicates an identifier for scrambling the coordinated transmission. The timing synchronization relationship for downlink or uplink transmission is determined based on the timing synchronization relationship between the terminal and the network node associated with the physical resource allocated for the coordinated transmission. The network node is specifically the reference cell or reference TRP indicated by the RRC signaling or PDCCH command, or the cell or TRP that sends the RRC signaling or PDCCH command.

[0624] Note: In Examples 1 to 4, different cells or TRPs participating in coordinated transmission need to notify each other of pre-configured coordinated transmission resources and / or coordinated transmission resource activation information. The specific notification method is any of the following:

[0625] a) If the cells / TRPs participating in the coordinated transmission belong to different DUs / DDUs, the pre-configuration information and / or activation information of the coordinated transmission resources are exchanged through the interface between the DUs / DDUs;

[0626] b) If the cells / TRPs participating in the coordinated transmission belong to different DUs / DDUs, the CU / CCU exchanges pre-configuration information and / or activation information of the coordinated transmission resources through the interface between the CU / CCU and the DU / DDU (similar to the F1 interface in 5G);

[0627] c) If the cells / TRPs participating in the coordinated transmission belong to different base stations, the pre-configuration information and / or activation information of the coordinated transmission resources are exchanged through the interface between the base stations (similar to the Xn interface of 5G).

[0628] The methods and devices provided in the various embodiments of the present disclosure are based on the same application concept. Since the methods and devices solve problems based on similar principles, the implementation of the devices and methods can refer to each other, and the repeated parts will not be repeated.

[0629] FIG4 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure. As shown in FIG4 , the terminal includes a memory 420 , a transceiver 410 , and a processor 400 ; wherein the processor 400 and the memory 420 may also be physically arranged separately.

[0630] The memory 420 is used to store computer programs; the transceiver 410 is used to send and receive data under the control of the processor 400.

[0631] Specifically, the transceiver 410 is configured to receive and send data under the control of the processor 400 .

[0632] In FIG4 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits of one or more processors represented by processor 400 and memory represented by memory 420, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described in this disclosure. The bus interface provides an interface. The transceiver 410 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and other transmission media. For different user devices, the user interface 430 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0633] The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 can store data used by the processor 400 when performing operations.

[0634] The processor 400 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0635] The processor 400 calls the computer program stored in the memory 420 to execute any of the methods provided in the embodiments of the present disclosure according to the obtained executable instructions, for example: receiving radio resource control RRC signaling sent by the first network node, the RRC signaling is used to pre-configure cooperative transmission resources; based on the cooperative transmission resources, data is received or sent.

[0636] In some embodiments, the RRC signaling includes one or more of the following information:

[0637] Effective time information of collaborative transmission resources;

[0638] The period of coordinated transmission resources;

[0639] The number of cooperative transmission resources in each cooperative transmission resource period;

[0640] The number of times the cooperative transmission resource is effective;

[0641] Physical layer resource configuration information of coordinated transmission resources;

[0642] Refer to the network node indication;

[0643] Preconfigured resource type indication;

[0644] Information about network nodes participating in collaborative transmission;

[0645] The identifier used to scramble cooperative transmissions.

[0646] In some embodiments, the first network node includes any of the following:

[0647] Primary cell under carrier aggregation CA;

[0648] The primary cell of the primary base station in dual-connected DC;

[0649] Primary cell of the secondary base station under DC;

[0650] Primary cell in the timing advance group TAG;

[0651] Any cell or any transmission reception point TRP to which the terminal is currently connected;

[0652] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0653] The source cell or source TRP for the coordinated transmission;

[0654] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0655] In some embodiments, the method further comprises:

[0656] A physical downlink control channel (PDCCH) command is received from the second network node, where the PDCCH command is used to activate the coordinated transmission resource.

[0657] In some embodiments, the PDCCH order includes one or more of the following information:

[0658] Effective time information of collaborative transmission resources;

[0659] The number of cooperative transmission resources in each cooperative transmission resource period;

[0660] The number of times the cooperative transmission resource is effective;

[0661] Physical layer resource allocation information for coordinated transmission resources;

[0662] Refer to the network node indication;

[0663] Information about network nodes participating in collaborative transmission.

[0664] In some embodiments, the second network node includes any of the following:

[0665] Primary cell under CA;

[0666] The primary cell of the primary base station under DC;

[0667] Primary cell of the secondary base station under DC;

[0668] The primary cell in the TAG;

[0669] Any cell or TRP to which the terminal is currently connected;

[0670] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0671] The source cell or source TRP for the coordinated transmission;

[0672] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0673] In some embodiments, the method further comprises:

[0674] Any of the following moments is determined as the effective moment of the cooperative transmission resource:

[0675] The sending or receiving time of RRC signaling; or

[0676] The time indicated by the effective time information of the coordinated transmission resource in the RRC signaling; or

[0677] The sending or receiving time of the PDCCH command for activating the coordinated transmission resource; or

[0678] The time indicated by the activation time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

[0679] In some embodiments, the method further comprises:

[0680] determining cooperative transmission resources based on resource configuration of the third network node;

[0681] In which, when the coordinated transmission resources are allocated physical layer resources by RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

[0682] In some embodiments, the method further comprises:

[0683] The third network node is determined as a timing synchronization reference network node.

[0684] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0685] The absolute time at which the coordinated transport resource becomes effective; or,

[0686] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0687] In some embodiments, the cooperative transmission resource is a resource that is periodically effective, or a resource that is effective once, or a resource that is effective a specified number of times.

[0688] FIG5 is a schematic structural diagram of a first network node provided by an embodiment of the present disclosure. As shown in FIG5 , the first network node includes a memory 520 , a transceiver 510 , and a processor 500 ; wherein the processor 500 and the memory 520 may also be physically arranged separately.

[0689] The memory 520 is used to store computer programs; the transceiver 510 is used to send and receive data under the control of the processor 500.

[0690] Specifically, the transceiver 510 is configured to receive and send data under the control of the processor 500 .

[0691] In FIG5 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 500 and memory represented by memory 520. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described in this disclosure. The bus interface provides an interface. The transceiver 510 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, or the like.

[0692] The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.

[0693] The processor 500 may be a CPU, an ASIC, an FPGA, or a CPLD, and the processor may also adopt a multi-core architecture.

[0694] The processor 500 calls the computer program stored in the memory 520 to execute any of the methods provided in the embodiments of the present disclosure according to the obtained executable instructions, for example: sending radio resource control RRC signaling to the terminal, where the RRC signaling is used to pre-configure cooperative transmission resources.

[0695] In some embodiments, the RRC signaling includes one or more of the following information:

[0696] Effective time information of collaborative transmission resources;

[0697] The period of coordinated transmission resources;

[0698] The number of cooperative transmission resources in each cooperative transmission resource period;

[0699] The number of times the cooperative transmission resource is effective;

[0700] Physical layer resource configuration information of coordinated transmission resources;

[0701] Refer to the network node indication;

[0702] Preconfigured resource type indication;

[0703] Information about network nodes participating in collaborative transmission;

[0704] The identifier used to scramble cooperative transmissions.

[0705] In some embodiments, the method further comprises:

[0706] A physical downlink control channel (PDCCH) command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resources.

[0707] In some embodiments, the PDCCH order includes one or more of the following information:

[0708] Effective time information of collaborative transmission resources;

[0709] The number of cooperative transmission resources in each cooperative transmission resource period;

[0710] The number of times the cooperative transmission resource is effective;

[0711] Physical layer resource allocation information for coordinated transmission resources;

[0712] Refer to the network node indication;

[0713] Information about network nodes participating in collaborative transmission.

[0714] In some embodiments, the method further comprises:

[0715] Through the interface between distributed data units, the interface between the central control plane node and the distributed data unit, or the interface between base stations, the pre-configuration information of the coordinated transmission resources and / or the activation information of the coordinated transmission resources are exchanged with other network nodes participating in the coordinated transmission.

[0716] In some embodiments, the method further comprises:

[0717] Any of the following moments is determined as the effective moment of the cooperative transmission resource:

[0718] The sending or receiving time of RRC signaling; or

[0719] The time indicated by the effective time information of the coordinated transmission resource in the RRC signaling; or

[0720] The sending or receiving time of the PDCCH command for activating the coordinated transmission resource; or

[0721] The time indicated by the activation time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

[0722] In some embodiments, the method further comprises:

[0723] determining cooperative transmission resources based on resource configuration of the third network node;

[0724] In which, when the coordinated transmission resources are allocated physical layer resources by RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

[0725] In some embodiments, the method further comprises:

[0726] The third network node is determined as a timing synchronization reference network node.

[0727] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0728] The absolute time at which the coordinated transport resource becomes effective; or,

[0729] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0730] In some embodiments, the cooperative transmission resource is a resource that is periodically effective, or a resource that is effective once, or a resource that is effective a specified number of times.

[0731] In some embodiments, the first network node includes any of the following:

[0732] Primary cell under carrier aggregation CA;

[0733] The primary cell of the primary base station in dual-connected DC;

[0734] Primary cell of the secondary base station under DC;

[0735] Primary cell in the timing advance group TAG;

[0736] Any cell or any transmission reception point TRP to which the terminal is currently connected;

[0737] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0738] The source cell or source TRP for the coordinated transmission;

[0739] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0740] It should be noted here that the above-mentioned terminal and first network node provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0741] FIG6 is a schematic diagram of the structure of a data transmission device provided in an embodiment of the present disclosure. As shown in FIG6 , the device includes:

[0742] The receiving unit 600 is configured to receive radio resource control (RRC) signaling sent by the first network node, where the RRC signaling is used to pre-configure cooperative transmission resources;

[0743] The transmission unit 610 is configured to receive or send data based on the coordinated transmission resources.

[0744] In some embodiments, the RRC signaling includes one or more of the following information:

[0745] Effective time information of collaborative transmission resources;

[0746] The period of coordinated transmission resources;

[0747] The number of cooperative transmission resources in each cooperative transmission resource period;

[0748] The number of times the cooperative transmission resource is effective;

[0749] Physical layer resource configuration information of coordinated transmission resources;

[0750] Refer to the network node indication;

[0751] Preconfigured resource type indication;

[0752] Information about network nodes participating in collaborative transmission;

[0753] The identifier used to scramble cooperative transmissions.

[0754] In some embodiments, the first network node includes any of the following:

[0755] Primary cell under carrier aggregation CA;

[0756] The primary cell of the primary base station in dual-connected DC;

[0757] Primary cell of the secondary base station under DC;

[0758] Primary cell in the timing advance group TAG;

[0759] Any cell or any transmission reception point TRP to which the terminal is currently connected;

[0760] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0761] The source cell or source TRP for the coordinated transmission;

[0762] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0763] In some embodiments, the receiving unit 600 is further configured to:

[0764] A physical downlink control channel (PDCCH) command is received from the second network node, where the PDCCH command is used to activate the coordinated transmission resource.

[0765] In some embodiments, the PDCCH order includes one or more of the following information:

[0766] Effective time information of collaborative transmission resources;

[0767] The number of cooperative transmission resources in each cooperative transmission resource period;

[0768] The number of times the cooperative transmission resource is effective;

[0769] Physical layer resource allocation information for coordinated transmission resources;

[0770] Refer to the network node indication;

[0771] Information about network nodes participating in collaborative transmission.

[0772] In some embodiments, the second network node includes any of the following:

[0773] Primary cell under CA;

[0774] The primary cell of the primary base station under DC;

[0775] Primary cell of the secondary base station under DC;

[0776] The primary cell in the TAG;

[0777] Any cell or TRP to which the terminal is currently connected;

[0778] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0779] The source cell or source TRP for the coordinated transmission;

[0780] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0781] In some embodiments, the apparatus further comprises:

[0782] The first determining unit is configured to determine any of the following moments as the time at which the coordinated transmission resource takes effect:

[0783] The sending or receiving time of RRC signaling; or

[0784] The time indicated by the effective time information of the coordinated transmission resource in the RRC signaling; or

[0785] The sending or receiving time of the PDCCH command for activating the coordinated transmission resource; or

[0786] The time indicated by the activation time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

[0787] In some embodiments, the apparatus further comprises:

[0788] a second determining unit, configured to determine a coordinated transmission resource based on a resource configuration of a third network node;

[0789] In which, when the coordinated transmission resources are allocated physical layer resources by RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

[0790] In some embodiments, the apparatus further comprises:

[0791] The third determining unit is configured to determine the third network node as the timing synchronization reference network node.

[0792] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0793] The absolute time at which the coordinated transport resource becomes effective; or,

[0794] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0795] In some embodiments, the cooperative transmission resource is a resource that is periodically effective, or a resource that is effective once, or a resource that is effective a specified number of times.

[0796] FIG7 is a schematic diagram of the structure of a coordinated transmission resource allocation device provided in an embodiment of the present disclosure. As shown in FIG7 , the device includes:

[0797] The sending unit 700 is configured to send radio resource control (RRC) signaling to the terminal, where the RRC signaling is used to pre-configure coordinated transmission resources.

[0798] In some embodiments, the RRC signaling includes one or more of the following information:

[0799] Effective time information of collaborative transmission resources;

[0800] The period of coordinated transmission resources;

[0801] The number of cooperative transmission resources in each cooperative transmission resource period;

[0802] The number of times the cooperative transmission resource is effective;

[0803] Physical layer resource configuration information of coordinated transmission resources;

[0804] Refer to the network node indication;

[0805] Preconfigured resource type indication;

[0806] Information about network nodes participating in collaborative transmission;

[0807] The identifier used to scramble cooperative transmissions.

[0808] In some embodiments, the sending unit 700 is further configured to:

[0809] A physical downlink control channel (PDCCH) command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resources.

[0810] In some embodiments, the PDCCH order includes one or more of the following information:

[0811] Effective time information of collaborative transmission resources;

[0812] The number of cooperative transmission resources in each cooperative transmission resource period;

[0813] The number of times the cooperative transmission resource is effective;

[0814] Physical layer resource allocation information for coordinated transmission resources;

[0815] Refer to the network node indication;

[0816] Information about network nodes participating in collaborative transmission.

[0817] In some embodiments, the apparatus further comprises:

[0818] An interaction unit is used to exchange pre-configuration information of cooperative transmission resources and / or activation information of cooperative transmission resources with other network nodes participating in cooperative transmission through the interface between distributed data units, the interface between the central control plane node and the distributed data unit, or the interface between base stations.

[0819] In some embodiments, the apparatus further comprises:

[0820] The fourth determining unit is configured to determine any one of the following moments as the time at which the coordinated transmission resource takes effect:

[0821] The sending or receiving time of RRC signaling; or

[0822] The time indicated by the effective time information of the coordinated transmission resource in the RRC signaling; or

[0823] The sending or receiving time of the PDCCH command for activating the coordinated transmission resource; or

[0824] The time indicated by the activation time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

[0825] In some embodiments, the apparatus further comprises:

[0826] a fifth determining unit, configured to determine the coordinated transmission resource based on the resource configuration of the third network node;

[0827] In which, when the coordinated transmission resources are allocated physical layer resources by RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

[0828] In some embodiments, the apparatus further comprises:

[0829] The sixth determining unit is configured to determine the third network node as the timing synchronization reference network node.

[0830] In some embodiments, the validity time information of the cooperative transmission resource includes:

[0831] The absolute time at which the coordinated transport resource becomes effective; or,

[0832] The time offset between the absolute time when the coordinated transmission resource takes effect and the time when the effectuation time information is sent.

[0833] In some embodiments, the cooperative transmission resource is a resource that is periodically effective, or a resource that is effective once, or a resource that is effective a specified number of times.

[0834] In some embodiments, the first network node includes any of the following:

[0835] Primary cell under carrier aggregation CA;

[0836] The primary cell of the primary base station in dual-connected DC;

[0837] Primary cell of the secondary base station under DC;

[0838] Primary cell in the timing advance group TAG;

[0839] Any cell or any transmission reception point TRP to which the terminal is currently connected;

[0840] The distributed data unit to which any TRP to which the terminal is currently connected is connected;

[0841] The source cell or source TRP for the coordinated transmission;

[0842] A distributed data unit to which the source TRP for collaborative transmission is connected.

[0843] It should be noted that the division of units in the embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0844] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0845] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0846] On the other hand, an embodiment of the present disclosure further provides a non-transitory readable storage medium, wherein the non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the methods provided in the above embodiments.

[0847] It should be noted here that the non-transitory readable storage medium provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0848] The non-transitory readable storage medium can be any available medium or data storage device that can be accessed by a computer, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid-state drives (SSDs)), etc.

[0849] The technical solution provided by the embodiments of the present disclosure can be applicable to a variety of systems, especially 5G systems. For example, applicable systems may be global system of mobile communication (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) general packet radio service (GPRS) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, long term evolution advanced (LTE-A) systems, universal mobile telecommunication systems (UMTS), worldwide interoperability for microwave access (WiMAX) systems, 5G new air interface (NR) systems, etc. These various systems include terminal devices and network devices. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0850] The terminal involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal may also be different. For example, in a 5G system, the terminal may be called User Equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges voice and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, but is not limited in the embodiments of the present disclosure.

[0851] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0852] The present disclosure is 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 disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0853] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0854] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0855] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A data transmission method, applied to a terminal, comprising: receiving a radio resource control RRC signaling sent by a first network node, where the RRC signaling is used to pre-configure a coordinated transmission resource; Data is received or sent based on the cooperative transmission resource.

2. The data transmission method according to claim 1, wherein: The RRC signaling includes one or more of the following information: The effective time information of the coordinated transmission resource; The period of the cooperative transmission resource; The number of cooperative transmission resources in each cooperative transmission resource period; The number of times the cooperative transmission resource is made effective; Physical layer resource configuration information of the collaborative transmission resource; Refer to the network node indication; Preconfigured resource type indication; Information about network nodes participating in collaborative transmission; An identifier used to scramble cooperative transmissions.

3. The data transmission method according to claim 1 or 2, wherein: The first network node includes any one of the following: Primary cell under carrier aggregation CA; The primary cell of the primary base station in dual-connection DC; The primary cell of the secondary base station under DC; Primary cell in the timing advance group TAG; Any cell or any transmission reception point TRP to which the terminal is currently connected; A distributed data unit to which any TRP to which the terminal is currently connected is connected; The source cell or source TRP for the coordinated transmission; Distributed data unit to which the source TRP for collaborative transmission is connected.

4. The data transmission method according to claim 1, wherein: The method further comprises: A physical downlink control channel (PDCCH) command is received from a second network node, where the PDCCH command is used to activate the coordinated transmission resource.

5. The data transmission method according to claim 4, wherein: The PDCCH command includes one or more of the following information: The effective time information of the collaborative transmission resource; The number of cooperative transmission resources in each cooperative transmission resource period; The number of times the cooperative transmission resource is made effective; Physical layer resource allocation information of the cooperative transmission resource; Refer to the network node indication; Information about network nodes participating in collaborative transmission.

6. The data transmission method according to claim 4 or 5, wherein: The second network node includes any one of the following: The primary cell under CA; The primary cell of the primary base station under DC; The primary cell of the secondary base station under DC; The primary cell in TAG; Any cell or any TRP to which the terminal is currently connected; A distributed data unit to which any TRP to which the terminal is currently connected is connected; The source cell or source TRP for the coordinated transmission; Distributed data unit to which the source TRP for collaborative transmission is connected.

7. The data transmission method according to claim 1, 2, 4 or 5, wherein: The method further comprises: Any of the following moments is determined as the effective moment of the cooperative transmission resource: The sending time or receiving time of the RRC signaling; or, The time indicated by the validity time information of the coordinated transmission resource in the RRC signaling; or a sending time or a receiving time of a PDCCH command for activating the cooperative transmission resource; or The time indicated by the effective time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

8. The data transmission method according to claim 1, 2, 4 or 5, wherein: The method further comprises: Determining the coordinated transmission resource based on resource configuration of a third network node; In which, when the coordinated transmission resources are allocated physical layer resources by the RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

9. The data transmission method according to claim 8, wherein: The method further comprises: The third network node is determined as a timing synchronization reference network node.

10. The data transmission method according to claim 2 or 5, wherein: The effective time information of the coordinated transmission resource includes: the absolute time at which the cooperative transmission resource takes effect; or The time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.

11. The data transmission method according to claim 1, 2, 4 or 5, wherein: The cooperative transmission resource is a resource that is effective periodically, or a resource that is effective once, or a resource that is effective a specified number of times.

12. A coordinated transmission resource allocation method, applied to a first network node, comprising: A radio resource control (RRC) signaling is sent to the terminal, where the RRC signaling is used to pre-configure cooperative transmission resources.

13. The method for allocating cooperative transmission resources according to claim 12, wherein: The RRC signaling includes one or more of the following information: The effective time information of the collaborative transmission resource; The period of the cooperative transmission resource; The number of cooperative transmission resources in each cooperative transmission resource period; The number of times the cooperative transmission resource is made effective; Physical layer resource configuration information of the collaborative transmission resource; Refer to the network node indication; Preconfigured resource type indication; Information about network nodes participating in collaborative transmission; An identifier used to scramble cooperative transmissions.

14. The method for allocating cooperative transmission resources according to claim 12, wherein: The method further comprises: A physical downlink control channel (PDCCH) command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resource.

15. The method for allocating coordinated transmission resources according to claim 14, wherein: The PDCCH command includes one or more of the following information: The effective time information of the collaborative transmission resource; The number of cooperative transmission resources in each cooperative transmission resource period; The number of times the cooperative transmission resource is made effective; Physical layer resource allocation information of the cooperative transmission resource; Refer to the network node indication; Information about network nodes participating in collaborative transmission.

16. The method for allocating coordinated transmission resources according to any one of claims 12 to 15, wherein: The method further comprises: The pre-configuration information of the coordinated transmission resources and / or the activation information of the coordinated transmission resources are exchanged with other network nodes participating in the coordinated transmission through the interface between distributed data units, the interface between the central control plane node and the distributed data units, or the interface between base stations.

17. The method for allocating coordinated transmission resources according to any one of claims 12 to 15, wherein: The method further comprises: Any of the following moments is determined as the effective moment of the cooperative transmission resource: The sending time or receiving time of the RRC signaling; or, The time indicated by the validity time information of the coordinated transmission resource in the RRC signaling; or a sending time or a receiving time of a PDCCH command for activating the cooperative transmission resource; or The time indicated by the effective time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

18. The method for allocating coordinated transmission resources according to any one of claims 12 to 15, wherein: The method further comprises: Determining the coordinated transmission resource based on resource configuration of a third network node; In which, when the coordinated transmission resources are allocated physical layer resources by the RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

19. The method for allocating coordinated transmission resources according to claim 18, wherein: The method further comprises: The third network node is determined as a timing synchronization reference network node.

20. The method for allocating coordinated transmission resources according to claim 13 or 15, wherein: The effective time information of the coordinated transmission resource includes: the absolute time at which the cooperative transmission resource takes effect; or The time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.

21. The method for allocating coordinated transmission resources according to any one of claims 12 to 15, wherein: The cooperative transmission resource is a resource that is effective periodically, or a resource that is effective once, or a resource that is effective a specified number of times.

22. The method for allocating coordinated transmission resources according to any one of claims 12 to 15, wherein: The first network node includes any one of the following: Primary cell under carrier aggregation CA; The primary cell of the primary base station in dual-connection DC; The primary cell of the secondary base station under DC; Primary cell in the timing advance group TAG; Any cell or any transmission reception point TRP to which the terminal is currently connected; A distributed data unit to which any TRP to which the terminal is currently connected is connected; The source cell or source TRP for the coordinated transmission; Distributed data unit to which the source TRP for collaborative transmission is connected.

23. A terminal comprising a memory, a transceiver, and a processor; Memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; and a processor, configured to read the computer program in the memory and perform the following operations: receiving a radio resource control RRC signaling sent by a first network node, where the RRC signaling is used to pre-configure a coordinated transmission resource; Data is received or sent based on the cooperative transmission resource.

24. The terminal according to claim 23, wherein: The RRC signaling includes one or more of the following information: The effective time information of the collaborative transmission resource; The period of the cooperative transmission resource; The number of cooperative transmission resources in each cooperative transmission resource period; The number of times the cooperative transmission resource is made effective; Physical layer resource configuration information of the collaborative transmission resource; Refer to the network node indication; Preconfigured resource type indication; Information about network nodes participating in collaborative transmission; An identifier used to scramble cooperative transmissions.

25. The terminal according to claim 23 or 24, wherein: The first network node includes any one of the following: Primary cell under carrier aggregation CA; The primary cell of the primary base station in dual-connection DC; The primary cell of the secondary base station under DC; Primary cell in the timing advance group TAG; Any cell or any transmission reception point TRP to which the terminal is currently connected; A distributed data unit to which any TRP to which the terminal is currently connected is connected; The source cell or source TRP for the coordinated transmission; Distributed data unit to which the source TRP for collaborative transmission is connected.

26. The terminal according to claim 23, wherein: The operations also include: A physical downlink control channel (PDCCH) command is received from a second network node, where the PDCCH command is used to activate the coordinated transmission resource.

27. The terminal according to claim 26, wherein: The PDCCH command includes one or more of the following information: The effective time information of the collaborative transmission resource; The number of cooperative transmission resources in each cooperative transmission resource period; The number of times the cooperative transmission resource is made effective; Physical layer resource allocation information of the cooperative transmission resource; Refer to the network node indication; Information about network nodes participating in collaborative transmission.

28. The terminal according to claim 26 or 27, wherein: The second network node includes any one of the following: The primary cell under CA; The primary cell of the primary base station under DC; The primary cell of the secondary base station under DC; The primary cell in TAG; Any cell or any TRP to which the terminal is currently connected; A distributed data unit to which any TRP to which the terminal is currently connected is connected; The source cell or source TRP for the coordinated transmission; Distributed data unit to which the source TRP for collaborative transmission is connected.

29. The terminal according to claim 23, 24, 26 or 27, wherein: The operations also include: Any of the following moments is determined as the effective moment of the cooperative transmission resource: The sending time or receiving time of the RRC signaling; or, The time indicated by the validity time information of the coordinated transmission resource in the RRC signaling; or a sending time or a receiving time of a PDCCH command for activating the cooperative transmission resource; or The time indicated by the effective time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

30. The terminal according to claim 23, 24, 26 or 27, wherein: The operations also include: Determining the coordinated transmission resource based on resource configuration of a third network node; In which, when the coordinated transmission resources are allocated physical layer resources by the RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

31. The terminal according to claim 30, wherein: The operations also include: The third network node is determined as a timing synchronization reference network node.

32. The terminal according to claim 24 or 27, wherein: The effective time information of the coordinated transmission resource includes: the absolute time at which the cooperative transmission resource takes effect; or The time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.

33. The terminal according to claim 23, 24, 26 or 27, wherein: The cooperative transmission resource is a resource that is effective periodically, or a resource that is effective once, or a resource that is effective a specified number of times.

34. A first network node, comprising a memory, a transceiver, and a processor; Memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; and a processor, configured to read the computer program in the memory and perform the following operations: A radio resource control (RRC) signaling is sent to the terminal, where the RRC signaling is used to pre-configure cooperative transmission resources.

35. The first network node according to claim 34, wherein: The RRC signaling includes one or more of the following information: The effective time information of the collaborative transmission resource; The period of the cooperative transmission resource; The number of cooperative transmission resources in each cooperative transmission resource period; The number of times the cooperative transmission resource is made effective; Physical layer resource configuration information of the collaborative transmission resource; Refer to the network node indication; Preconfigured resource type indication; Information about network nodes participating in collaborative transmission; An identifier used to scramble cooperative transmissions.

36. The first network node according to claim 34, wherein: The operations also include: A physical downlink control channel (PDCCH) command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resource.

37. The first network node according to claim 36, wherein: The PDCCH command includes one or more of the following information: The effective time information of the collaborative transmission resource; The number of cooperative transmission resources in each cooperative transmission resource period; The number of times the cooperative transmission resource is made effective; Physical layer resource allocation information of the cooperative transmission resource; Refer to the network node indication; Information about network nodes participating in collaborative transmission.

38. The first network node according to any one of claims 34 to 37, wherein: The operations also include: The pre-configuration information of the coordinated transmission resources and / or the activation information of the coordinated transmission resources are exchanged with other network nodes participating in the coordinated transmission through the interface between distributed data units, the interface between the central control plane node and the distributed data units, or the interface between base stations.

39. The first network node according to any one of claims 34 to 37, wherein: The operations also include: Any of the following moments is determined as the effective moment of the cooperative transmission resource: The sending time or receiving time of the RRC signaling; or, The time indicated by the validity time information of the coordinated transmission resource in the RRC signaling; or a sending time or a receiving time of a PDCCH command for activating the cooperative transmission resource; or The time indicated by the effective time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.

40. The first network node according to any one of claims 34 to 37, wherein: The operations also include: Determining the coordinated transmission resource based on resource configuration of a third network node; In which, when the coordinated transmission resources are allocated physical layer resources by the RRC signaling, the third network node is the first network node, or the reference network node indicated in the RRC signaling; or, when the coordinated transmission resources are allocated physical layer resources by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or the reference network node indicated in the RRC signaling, or the reference network node indicated in the PDCCH command.

41. The first network node according to claim 40, wherein: The operations also include: The third network node is determined as a timing synchronization reference network node.

42. A data transmission device, comprising: A receiving unit, configured to receive a radio resource control RRC signaling sent by a first network node, wherein the RRC signaling is used to pre-configure a coordinated transmission resource; The transmission unit is used to receive or send data based on the coordinated transmission resource.

43. A coordinated transmission resource allocation device, comprising: The sending unit is used to send radio resource control RRC signaling to the terminal, where the RRC signaling is used to pre-configure cooperative transmission resources.

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