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

Abstract

Provided are a data transmission method, a cooperative transmission resource allocation method, a device and an apparatus, the data transmission method comprising: a terminal receiving a radio resource control (RRC) signaling sent by a first network node, the RRC signaling being used for pre-configuring a cooperative transmission resource; and receiving or sending data based on the cooperative transmission resource.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and in particular, to a data transmission method, a collaborative transmission resource allocation method, a device, and an apparatus. Background Art

[0002] In existing wireless mobile communication systems (3G, 4G, 5G), the scheduling and transmission of a terminal (or user equipment, UE) are carried out on a cell basis. That is, the terminal receives downlink transmissions sent by a 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 the scheduling and transmission, and the identifier used to identify the terminal in the scheduling and transmission all belong to the cell. For terminals at the cell edge, this scheduling and transmission mechanism will result in a decline in transmission performance. To this end, collaborative 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 transmission sent by the terminal, and the transmissions are combined at the base station side to achieve a combining gain.

[0003] However, current collaborative transmission technologies can only be carried out among multiple cells or TRPs that do not require signaling interaction and have no synchronization difference. It is difficult to achieve collaborative transmission of the same terminal by different cells or TRPs in actual deployment. Summary of the Invention

[0004] This application provides a data transmission method, a collaborative transmission resource allocation method, a device, and an apparatus, so as to achieve collaborative transmission of the same terminal by different cells or TRPs and improve the transmission performance.

[0005] In a first aspect, this application provides a data transmission method, which is applied to a terminal and includes:

[0006] Receiving a radio resource control (RRC) signaling sent by a first network node, where the RRC signaling is used to pre-configure collaborative transmission resources;

[0007] Based on the collaborative transmission resources, performing data reception or transmission.

[0008] In some embodiments, the RRC signaling includes one or more of the following information:

[0009] The effective time information of the collaborative transmission resources;

[0010] The period of the collaborative transmission resources;

[0011] The number of collaborative transmission resources within each collaborative transmission resource period;

[0012] The effective times of the coordinated transmission resources;

[0013] The physical layer resource configuration information of the coordinated transmission resources;

[0014] Reference network node indication;

[0015] Preconfigured resource type indication;

[0016] The network node information participating in the coordinated transmission;

[0017] The identifier used to scramble the coordinated transmission.

[0018] In some embodiments, the first network node includes any one of the following:

[0019] The primary cell under carrier aggregation (CA);

[0020] The primary cell of the primary base station under dual connectivity (DC);

[0021] The primary cell of the secondary base station under DC;

[0022] The primary cell in the timing advance group (TAG);

[0023] Any cell or any transmission and reception point (TRP) to which the terminal is currently connected;

[0024] The distributed data unit connected to any TRP to which the terminal is currently connected;

[0025] The source cell or source TRP performing the coordinated transmission;

[0026] The distributed data unit connected to the source TRP performing the coordinated transmission.

[0027] In some embodiments, the method further includes:

[0028] Receiving a physical downlink control channel (PDCCH) command sent by a second network node, where the PDCCH command is used to activate the coordinated transmission resources.

[0029] In some embodiments, the PDCCH command includes one or more of the following information:

[0030] The effective time information of the coordinated transmission resources;

[0031] The number of coordinated transmission resources within each coordinated transmission resource period;

[0032] The effective times of the coordinated transmission resources;

[0033] The physical layer resource allocation information of the coordinated transmission resources;

[0034] Reference network node indication;

[0035] Network node information participating in coordinated transmission.

[0036] In some embodiments, the second network node includes any one of the following:

[0037] The primary cell under CA;

[0038] The primary cell of the primary base station under DC;

[0039] The primary cell of the secondary base station under DC;

[0040] The primary cell in the TAG;

[0041] Any cell or any TRP to which the terminal is currently connected;

[0042] The distributed data unit connected to any TRP to which the terminal is currently connected;

[0043] The source cell or source TRP for coordinated transmission;

[0044] The distributed data unit connected to the source TRP for coordinated transmission.

[0045] In some embodiments, the method further includes:

[0046] Determine any one of the following times as the effective time of the coordinated transmission resource:

[0047] The sending time or receiving time of the RRC signaling; or,

[0048] In the RRC signaling, the time indicated by the effective time information of the coordinated transmission resource; or,

[0049] The sending time or receiving time of the PDCCH command for activating the coordinated transmission resource; or,

[0050] In the PDCCH command for activating the coordinated transmission resource, the time indicated by the effective time information of the coordinated transmission resource.

[0051] In some embodiments, the method further includes:

[0052] Determine the coordinated transmission resource based on the resource configuration of the third network node;

[0053] Wherein, when the coordinated transmission resource allocates 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,

[0054] In the case where the coordinated transmission resources allocate physical layer resources by means of a PDCCH command for activating 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.

[0055] In some embodiments, the method further includes:

[0056] Determining the third network node as a timing synchronization reference network node.

[0057] In some embodiments, the effective time information of the coordinated transmission resources includes:

[0058] The absolute effective moment of the coordinated transmission resources; or,

[0059] The time deviation of the absolute effective moment of the coordinated transmission resources relative to the transmission moment of the effective time information.

[0060] In some embodiments, the coordinated transmission resources are resources that become effective periodically, or resources that become effective once, or resources that become effective a specified number of times.

[0061] In a second aspect, the present application further provides a method for allocating coordinated transmission resources, which is applied to a first network node and includes:

[0062] Sending radio resource control (RRC) signaling to a terminal, where the RRC signaling is used to pre-configure coordinated transmission resources.

[0063] In some embodiments, the RRC signaling includes one or more of the following information:

[0064] The effective time information of the coordinated transmission resources;

[0065] The period of the coordinated transmission resources;

[0066] The number of coordinated transmission resources within each coordinated transmission resource period;

[0067] The number of times the coordinated transmission resources become effective;

[0068] The physical layer resource configuration information of the coordinated transmission resources;

[0069] Reference network node indication;

[0070] Pre-configured resource type indication;

[0071] Network node information participating in coordinated transmission;

[0072] An identifier for scrambling coordinated transmission.

[0073] In some embodiments, the method further includes:

[0074] Send a Physical Downlink Control Channel (PDCCH) command to a terminal, where the PDCCH command is used to activate co - transmission resources.

[0075] In some embodiments, the PDCCH command includes one or more of the following information:

[0076] The effective time information of the co - transmission resources;

[0077] The number of co - transmission resources within each co - transmission resource period;

[0078] The effective number of times of the co - transmission resources;

[0079] The physical layer resource allocation information of the co - transmission resources;

[0080] The reference network node indication;

[0081] The network node information participating in co - transmission.

[0082] In some embodiments, the method further includes:

[0083] Interact with other network nodes participating in co - transmission for the pre - configuration information of the co - transmission resources and / or the activation information of the co - transmission resources 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.

[0084] In some embodiments, the method further includes:

[0085] Determine any of the following moments as the effective moment of the co - transmission resources:

[0086] The sending moment or receiving moment of the RRC signaling; or,

[0087] In the RRC signaling, the moment indicated by the effective time information of the co - transmission resources; or,

[0088] The sending moment or receiving moment of the PDCCH command used to activate the co - transmission resources; or,

[0089] In the PDCCH command used to activate the co - transmission resources, the moment indicated by the effective time information of the co - transmission resources.

[0090] In some embodiments, the method further includes:

[0091] Determine co - transmission resources based on the resource configuration of a third network node;

[0092] Wherein, when the co - transmission resource allocates the physical layer resource by means of RRC signaling, the third network node is the first network node or the reference network node indicated in the RRC signaling; or,

[0093] When the co - transmission resource allocates the physical layer resource by means of the PDCCH command for activating the co - transmission resource, 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 includes:

[0095] Determining the third network node as the timing synchronization reference network node.

[0096] In some embodiments, the effective time information of the co - transmission resource includes:

[0097] The absolute effective moment of the co - transmission resource; or,

[0098] The time deviation of the absolute effective moment of the co - transmission resource relative to the sending moment of the effective time information.

[0099] In some embodiments, the co - transmission resource is a periodically effective resource, 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 one of the following:

[0101] The primary cell under carrier aggregation (CA);

[0102] The primary cell of the primary base station under dual - connection (DC);

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

[0104] The primary cell in the timing advance group (TAG);

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

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

[0107] The source cell or source TRP for co - transmission;

[0108] The distributed data unit connected to the source TRP for co - transmission.

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

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

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

[0112] Based on the co-transmission resources, performing data reception or transmission.

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

[0114] The effective time information of the co-transmission resources;

[0115] The period of the co-transmission resources;

[0116] The number of co-transmission resources within each co-transmission resource period;

[0117] The effective number of times of the co-transmission resources;

[0118] The physical layer resource configuration information of the co-transmission resources;

[0119] The reference network node indication;

[0120] The pre-configured resource type indication;

[0121] The network node information participating in the co-transmission;

[0122] The identifier used for scrambling the co-transmission.

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

[0124] The primary cell under carrier aggregation (CA);

[0125] The primary cell of the primary base station under dual connectivity (DC);

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

[0127] The primary cell in a timing advance group (TAG);

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

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

[0130] The source cell or source TRP for performing co-transmission;

[0131] The distributed data unit connected to the source TRP for performing co-transmission.

[0132] In some embodiments, the operation further includes:

[0133] Receiving a Physical Downlink Control Channel (PDCCH) command sent by a second network node, where the PDCCH command is used to activate a coordinated transmission resource.

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

[0135] Effective time information of the coordinated transmission resource;

[0136] Number of coordinated transmission resources within each coordinated transmission resource period;

[0137] Number of effective times of the coordinated transmission resource;

[0138] Physical layer resource allocation information of the coordinated transmission resource;

[0139] Reference network node indication;

[0140] Network node information participating in the coordinated transmission.

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

[0142] Primary cell under Carrier Aggregation (CA);

[0143] Primary cell of the primary base station under Dual Connectivity (DC);

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

[0145] Primary cell in a Transmission and Reception Point (TRP) set (TAG);

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

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

[0148] Source cell or source TRP for performing coordinated transmission;

[0149] Distributed data unit connected to the source TRP for performing coordinated transmission.

[0150] In some embodiments, the operation further includes:

[0151] Determining any one of the following moments as the effective moment of the coordinated transmission resource:

[0152] Transmission moment or reception moment of Radio Resource Control (RRC) signaling; or,

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

[0154] The transmission time or reception time of a PDCCH command for activating co - transmission resources; or,

[0155] In the PDCCH command for activating co - transmission resources, the time indicated by the effective - time information of the co - transmission resources.

[0156] In some embodiments, the operation further includes:

[0157] Determining co - transmission resources based on the resource configuration of a third network node;

[0158] Wherein, when the co - 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,

[0159] When the co - transmission resources are allocated physical - layer resources by a PDCCH command for activating co - 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.

[0160] In some embodiments, the operation further includes:

[0161] Determining the third network node as a timing - synchronization reference network node.

[0162] In some embodiments, the effective - time information of the co - transmission resources includes:

[0163] The absolute effective time of the co - transmission resources; or,

[0164] The time deviation of the absolute effective time of the co - transmission resources relative to the transmission time of the effective - time information.

[0165] In some embodiments, the co - transmission resources are resources that become effective periodically, or resources that become effective once, or resources that become effective a specified number of times.

[0166] In a fourth aspect, the present application further provides a first network node, including a memory, a transceiver, and a processor;

[0167] The memory is used to store computer programs; the transceiver is used to transmit and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

[0168] Sending radio resource control (RRC) signaling to a terminal, where the RRC signaling is used to pre - configure co - transmission resources.

[0169] In some embodiments, the RRC signaling includes one or more of the following information:

[0170] The effective time information of the coordinated transmission resource;

[0171] The period of the coordinated transmission resource;

[0172] The number of coordinated transmission resources within each coordinated transmission resource period;

[0173] The effective number of times of the coordinated transmission resource;

[0174] The physical layer resource configuration information of the coordinated transmission resource;

[0175] The reference network node indication;

[0176] The preconfigured resource type indication;

[0177] The network node information participating in the coordinated transmission;

[0178] The identifier used for scrambling the coordinated transmission.

[0179] In some embodiments, the operation further includes:

[0180] Sending a Physical Downlink Control Channel (PDCCH) command to the terminal, where the PDCCH command is used to activate the coordinated transmission resource.

[0181] In some embodiments, the PDCCH command includes one or more of the following information:

[0182] The effective time information of the coordinated transmission resource;

[0183] The number of coordinated transmission resources within each coordinated transmission resource period;

[0184] The effective number of times of the coordinated transmission resource;

[0185] The physical layer resource allocation information of the coordinated transmission resource;

[0186] The reference network node indication;

[0187] The network node information participating in the coordinated transmission.

[0188] In some embodiments, the operation further includes:

[0189] Interacting with other network nodes participating in the coordinated transmission to exchange the preconfigured information of the coordinated transmission resource and / or the activation information of the coordinated transmission resource 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.

[0190] In some embodiments, the operation further includes:

[0191] Determining any of the following moments as the effective moment of the coordinated transmission resource:

[0192] The transmission time or reception time of the RRC signaling; or,

[0193] In the RRC signaling, the time indicated by the activation time information of the coordinated transmission resource; or,

[0194] The transmission time or reception time of the PDCCH command for activating the coordinated transmission resource; or,

[0195] In the PDCCH command for activating the coordinated transmission resource, the time indicated by the activation time information of the coordinated transmission resource.

[0196] In some embodiments, the operation further includes:

[0197] Determining the coordinated transmission resource based on the resource configuration of the third network node;

[0198] Wherein, when the coordinated transmission resource allocates 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,

[0199] When the coordinated transmission resource allocates physical layer resources by the PDCCH command for activating the coordinated transmission resource, 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.

[0200] In some embodiments, the operation further includes:

[0201] Determining the third network node as the timing synchronization reference network node.

[0202] In some embodiments, the activation time information of the coordinated transmission resource includes:

[0203] The absolute activation time of the coordinated transmission resource; or,

[0204] The time deviation of the absolute activation time of the coordinated transmission resource relative to the transmission time of the activation time information.

[0205] In some embodiments, the coordinated transmission resource is a periodically activated resource, or a resource activated once, or a resource activated a specified number of times.

[0206] In some embodiments, the first network node includes any one of the following:

[0207] The primary cell under carrier aggregation CA;

[0208] The primary cell of the primary base station under dual connectivity DC;

[0209] The primary cell of the secondary base station under DC;

[0210] The primary cell in the Timing Advance Group (TAG);

[0211] Any cell or any Transmission and Reception Point (TRP) to which the terminal is currently connected;

[0212] The distributed data unit connected to any TRP to which the terminal is currently connected;

[0213] The source cell or source TRP for coordinated transmission;

[0214] The distributed data unit connected to the source TRP for coordinated transmission.

[0215] In a fifth aspect, the present application further provides a data transmission device, including:

[0216] A receiving unit, configured to receive Radio Resource Control (RRC) signaling sent by a first network node, where the RRC signaling is used to pre-configure coordinated transmission resources;

[0217] A transmitting unit, configured to perform data reception or transmission based on the coordinated transmission resources.

[0218] In some embodiments, the RRC signaling includes one or more of the following information:

[0219] The effective time information of the coordinated transmission resources;

[0220] The period of the coordinated transmission resources;

[0221] The number of coordinated transmission resources within each coordinated transmission resource period;

[0222] The effective number of times of the coordinated transmission resources;

[0223] The physical layer resource configuration information of the coordinated transmission resources;

[0224] The reference network node indication;

[0225] The pre-configured resource type indication;

[0226] The network node information participating in the coordinated transmission;

[0227] The identifier used for scrambling the coordinated transmission.

[0228] In some embodiments, the first network node includes any one of the following:

[0229] The primary cell under Carrier Aggregation (CA);

[0230] The primary cell of the primary base station under Dual Connectivity (DC);

[0231] The primary cell of the secondary base station under DC;

[0232] The primary cell in the Timing Advance Group (TAG);

[0233] Any cell or any Transmission and Reception Point (TRP) to which the terminal is currently connected;

[0234] The distributed data unit connected to any TRP to which the terminal is currently connected;

[0235] The source cell or source TRP for coordinated transmission;

[0236] The distributed data unit connected to the source TRP for coordinated transmission.

[0237] In some embodiments, the receiving unit is further configured to:

[0238] Receive a Physical Downlink Control Channel (PDCCH) command sent by a second network node, where the PDCCH command is used to activate coordinated transmission resources.

[0239] In some embodiments, the PDCCH command includes one or more of the following information:

[0240] The effective time information of the coordinated transmission resources;

[0241] The number of coordinated transmission resources within each coordinated transmission resource period;

[0242] The effective number of times of the coordinated transmission resources;

[0243] The physical layer resource allocation information of the coordinated transmission resources;

[0244] The reference network node indication;

[0245] The network node information participating in the coordinated transmission.

[0246] In some embodiments, the second network node includes any one of the following:

[0247] The primary cell under Carrier Aggregation (CA);

[0248] The primary cell of the primary base station under Dual Connectivity (DC);

[0249] The primary cell of the secondary base station under DC;

[0250] The primary cell in the TAG;

[0251] Any cell or any TRP to which the terminal is currently connected;

[0252] The distributed data unit connected to any TRP to which the terminal is currently connected;

[0253] The source cell or source TRP for coordinated transmission;

[0254] The distributed data unit connected to the source TRP for coordinated transmission.

[0255] In some embodiments, the apparatus further comprises:

[0256] A first determination unit, configured to determine any one of the following moments as the effective moment of the coordinated transmission resource:

[0257] The transmission moment or reception moment of the RRC signaling; or,

[0258] In the RRC signaling, the moment indicated by the effective time information of the coordinated transmission resource; or,

[0259] The transmission moment or reception moment of the PDCCH command for activating the coordinated transmission resource; or,

[0260] In the PDCCH command for activating the coordinated transmission resource, the moment indicated by the effective time information of the coordinated transmission resource.

[0261] In some embodiments, the apparatus further comprises:

[0262] A second determination unit, configured to determine the coordinated transmission resource based on the resource configuration of the third network node;

[0263] Wherein, when the coordinated transmission resource allocates 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,

[0264] When the coordinated transmission resource allocates physical layer resources by the PDCCH command for activating the coordinated transmission resource, 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.

[0265] In some embodiments, the apparatus further comprises:

[0266] A third determination unit, configured to determine the third network node as the timing synchronization reference network node.

[0267] In some embodiments, the effective time information of the coordinated transmission resource includes:

[0268] The absolute effective moment of the coordinated transmission resource; or,

[0269] The time deviation of the absolute effective moment of the coordinated transmission resource relative to the transmission moment of the effective time information.

[0270] In some embodiments, the coordinated transmission resource is a periodically effective resource, or a resource that is effective once, or a resource that is effective a specified number of times.

[0271] In a sixth aspect, the present application further provides a co - transmission resource allocation device, including:

[0272] A sending unit, configured to send radio resource control (RRC) signaling to a terminal, where the RRC signaling is used to pre - configure co - transmission resources.

[0273] In some embodiments, the RRC signaling includes one or more of the following information:

[0274] The effective time information of the co - transmission resources;

[0275] The period of the co - transmission resources;

[0276] The number of co - transmission resources within each co - transmission resource period;

[0277] The effective number of times of the co - transmission resources;

[0278] The physical layer resource configuration information of the co - transmission resources;

[0279] The reference network node indication;

[0280] The pre - configured resource type indication;

[0281] The network node information participating in co - transmission;

[0282] The identifier used for scrambling co - transmission.

[0283] In some embodiments, the sending unit is further configured to:

[0284] Send a physical downlink control channel (PDCCH) command to the terminal, where the PDCCH command is used to activate the co - transmission resources.

[0285] In some embodiments, the PDCCH command includes one or more of the following information:

[0286] The effective time information of the co - transmission resources;

[0287] The number of co - transmission resources within each co - transmission resource period;

[0288] The effective number of times of the co - transmission resources;

[0289] The physical layer resource allocation information of the co - transmission resources;

[0290] The reference network node indication;

[0291] The network node information participating in co - transmission.

[0292] In some embodiments, the device further includes:

[0293] An interaction unit, configured to interact pre-configuration information of co-transmission resources and / or activation information of co-transmission resources with other network nodes participating in co-transmission through an interface between distributed data units, an interface between a central control plane node and a distributed data unit, or an interface between base stations.

[0294] In some embodiments, the apparatus further includes:

[0295] A fourth determination unit, configured to determine any one of the following moments as the effective moment of co-transmission resources:

[0296] The sending moment or receiving moment of an RRC signaling; or,

[0297] The moment indicated by the effective time information of co-transmission resources in the RRC signaling; or,

[0298] The sending moment or receiving moment of a PDCCH command for activating co-transmission resources; or,

[0299] The moment indicated by the effective time information of co-transmission resources in the PDCCH command for activating co-transmission resources.

[0300] In some embodiments, the apparatus further includes:

[0301] A fifth determination unit, configured to determine co-transmission resources based on the resource configuration of a third network node;

[0302] Wherein, in the case that the co-transmission resources are allocated physical layer resources by an RRC signaling, the third network node is the first network node or a reference network node indicated in the RRC signaling; or,

[0303] In the case that the co-transmission resources are allocated physical layer resources by a PDCCH command for activating co-transmission resources, the third network node is the network node that sends the PDCCH command, or a reference network node indicated in the RRC signaling, or a reference network node indicated in the PDCCH command.

[0304] In some embodiments, the apparatus further includes:

[0305] A sixth determination unit, configured to determine the third network node as a timing synchronization reference network node.

[0306] In some embodiments, the effective time information of co-transmission resources includes:

[0307] The absolute effective moment of co-transmission resources; or,

[0308] The time deviation of the absolute effective moment of co-transmission resources relative to the sending moment of the effective time information.

[0309] In some embodiments, the coordinated transmission resources are resources that take effect periodically, or resources that take effect once, or resources that take effect a specified number of times.

[0310] In some embodiments, the first network node includes any one of the following:

[0311] The primary cell under carrier aggregation (CA);

[0312] The primary cell of the primary base station under dual connectivity (DC);

[0313] The primary cell of the secondary base station under DC;

[0314] The primary cell in a timing advance group (TAG);

[0315] Any cell or any transmission and reception point (TRP) to which the terminal is currently connected;

[0316] The distributed data unit connected to any TRP to which the terminal is currently connected;

[0317] The source cell or source TRP for coordinated transmission;

[0318] The distributed data unit connected to the source TRP for coordinated transmission.

[0319] In a seventh aspect, the present application further provides a non-transitory readable storage medium storing a computer program for causing a processor to execute the data transmission method described in the first aspect above, or execute the coordinated transmission resource allocation method described in the second aspect above.

[0320] In an eighth aspect, the present application further provides a communication device storing a computer program for causing the communication device to execute the data transmission method described in the first aspect above, or execute the coordinated transmission resource allocation method described in the second aspect above.

[0321] In a ninth aspect, the present application further provides a processor-readable storage medium storing a computer program for causing a processor to execute the data transmission method described in the first aspect above, or execute the coordinated transmission resource allocation method described in the second aspect above.

[0322] In a tenth aspect, the present application further provides a chip product storing a computer program for causing the chip product to execute the data transmission method described in the first aspect above, or execute the coordinated transmission resource allocation method described in the second aspect above.

[0323] The data transmission method, cooperative transmission resource allocation method, device and apparatus provided by this application pre-configure resources for cooperative transmission for a terminal by the network side. The terminal receives downlink data or sends uplink data based on the pre-configured cooperative transmission resources. Even if there is a transmission delay in the interaction signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, cooperative transmission of a terminal by different cells or TRPs can still be achieved, thereby improving the transmission performance. Description of the Drawings

[0324] To more clearly illustrate the technical solutions in the embodiments of this application or the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0325] Figure 1 Schematic diagrams of cooperative transmission of different cells under two deployment methods provided by the related art;

[0326] Figure 2 Schematic flow chart of the data transmission method provided by the embodiment of this application;

[0327] Figure 3 Schematic flow chart of the cooperative transmission resource allocation method provided by the embodiment of this application;

[0328] Figure 4 Schematic structural diagram of the terminal provided by the embodiment of this application;

[0329] Figure 5 Schematic structural diagram of the first network node provided by the embodiment of this application;

[0330] Figure 6 Schematic structural diagram of the data transmission apparatus provided by the embodiment of this application;

[0331] Figure 7 Schematic structural diagram of the cooperative transmission resource allocation apparatus provided by the embodiment of this application. Detailed Embodiments

[0332] In the embodiments of this application, the term "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0333] In the embodiments of this application, the term "plurality" refers to two or more, and other quantifiers are similar.

[0334] In the embodiments of the present application, terms such as "first" and "second" are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0335] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0336] To facilitate a clearer understanding of the technical solutions of the embodiments of the present application, some technical content related to the embodiments of the present application will be introduced first.

[0337] Figure 1 Schematic diagrams of different cell cooperative transmissions under two deployment methods provided by the related art Figure 1In part (a), 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, and DU (Distributed Unit) or DDU (Distributed Data Unit) is the distributed data unit, which can be connected to one or more TRPs. One or more TRPs under the DDU form one cell on the base station side, which is used to schedule and transmit to the UE. In the figure, it is taken that one TRP corresponds to one cell on the base station side as an example. In the figure, UE1 is jointly transmitted by cell 1 and cell 2, and UE2 is jointly transmitted by cell 2 and cell 3. If inter-cell joint transmission is to be achieved, the participating cells need to unify the transmission resources (time, frequency, and space resources) and transmission formats (Modulation and Coding Scheme (MCS), Redundancy Version (RV), etc.). Therefore, inter-cell signaling interaction is required. For UE1, different cells are managed by one DU / DDU, and it is relatively easy to interact the radio interface joint transmission information between cells. For UE2, different cells belong to different DU / DDUs, and there will be a problem of transmission delay in interacting the radio interface joint transmission information between cells, and timely scheduling cannot be achieved. Moreover, different DU / DDUs usually have a time difference in synchronization, and there is also a problem of timing synchronization in the joint transmission of different cells under them.

[0338] Figure 1 In part (b), 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 interaction is through the Xn interface. The delay range of the Xn interface is very large, and timely interaction of radio interface joint transmission information cannot be achieved. At the same time, there is also a problem of timing synchronization in the joint transmission under different cells.

[0339] Therefore, although using multiple TRPs for radio interface transmission with the terminal, that is, the multiple TRP (m-TRP) technology, can improve the transmission performance, due to the delay of information interaction between different cells and different timing synchronization characteristics, the joint transmission of different cells is very difficult to achieve in actual deployment.

[0340] In view of the above problems, each embodiment of the present application provides a solution. By pre-configuring resources for joint transmission for the terminal on the network side, even if there is a transmission delay in the signaling interaction between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, the joint transmission of different cells or TRPs to one terminal can still be achieved.

[0341] Figure 2 This is a schematic flowchart of the data transmission method provided by an embodiment of the present application. This method is applied to a terminal, such as Figure 2 As shown, the method includes the following steps:

[0342] Step 200: Receive radio resource control (RRC) signaling sent by a first network node. The RRC signaling is used to pre-configure co-transmission resources.

[0343] Step 201: Receive or send data based on the co-transmission resources.

[0344] Specifically, co-transmission resources are resources used for co-transmission, which refer to: downlink resources sent or participated in sending downlink data by other cells or other TRPs (i.e., non-current cells, non-current TRPs), and uplink resources received by other cells or other TRPs for receiving uplink data.

[0345] In some embodiments, the co-transmission resources are resources that take effect periodically, or resources that take effect once, or resources that take effect a specified number of times.

[0346] In an embodiment of the present application, the network side pre-configures co-transmission resources for the terminal through radio resource control (RRC) signaling. After the terminal configures the pre-configured co-transmission resources, at the moment when the pre-configured co-transmission resources take effect, the terminal receives downlink data or sends uplink data according to the physical layer resources and transmission format allocated for the pre-configured co-transmission resources. Correspondingly, each cell or TRP participating in co-transmission on the network side also sends downlink data or receives uplink data at the moment when the pre-configured co-transmission resources take effect, according to the physical layer resources and transmission format allocated in the pre-configured co-transmission resources. In this way, even if there is a transmission delay in the interaction signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, co-transmission of different cells or TRPs to a terminal can still be achieved.

[0347] In some embodiments, the RRC signaling includes one or more of the following information:

[0348] (1) The effective time information of the co-transmission resources. This effective time information can be used to determine the actual effective time of the co-transmission resources.

[0349] In some embodiments, the effective time information of the co-transmission resources includes:

[0350] The absolute effective moment of the co-transmission resources; or,

[0351] The time deviation of the absolute effective moment of the co-transmission resources relative to the sending moment of the effective time information.

[0352] For example, the RRC signaling pre-configures the absolute effective moment of the coordinated transmission resource, and the terminal determines the actual effective time of the coordinated transmission resource based on this absolute effective moment. The absolute effective moment can be a value represented in units such as year, month, day, hour, minute, second, millisecond, etc., or a value represented by a system frame number, sub-frame number, time slot number, etc.

[0353] For another example, the time deviation deltaT of the absolute effective moment of the RRC signaling pre-configured coordinated transmission resource relative to the RRC signaling sending moment. When the terminal receives the RRC signaling, it determines the sending moment of the RRC signaling, adds the pre-configured time deviation value in the RRC signaling to the sending moment of the RRC signaling, and determines the actual effective time of the coordinated transmission resource.

[0354] (2) The period of the coordinated transmission resource.

[0355] For example, the RRC signaling pre-configures the coordinated transmission resource as a periodically effective resource, and the terminal periodically determines the start moment of each coordinated transmission resource based on the effective moment of the coordinated transmission resource and the period value of the coordinated transmission resource.

[0356] (3) The number of coordinated transmission resources within each coordinated transmission resource period. Here, the coordinated transmission resource period is the period of the pre-configured coordinated transmission resource.

[0357] For example, assume that the number of coordinated transmission resources pre-configured in each coordinated transmission resource period by the RRC signaling is N. The terminal determines that there are N consecutive pre-configured resources within each coordinated transmission resource period starting from the start moment of each coordinated transmission resource. If the pre-configured coordinated transmission resource is effective once, it determines that the number of pre-configured coordinated transmission resources is N.

[0358] (4) The number of times the coordinated transmission resource is effective.

[0359] For example, assume that the number of times the RRC signaling pre-configures the coordinated transmission resource to be 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 times of effectiveness can also be understood as the number of effective periods).

[0360] (5) The physical layer resource configuration information of the coordinated transmission resource.

[0361] The physical layer resource configuration information includes time-frequency resource configuration, transmission mode and other information. The transmission mode (or transmission format) includes MCS, RV, multi-input multi-output (MIMO) precoding matrix information, etc. Based on the physical layer resource configuration information, the terminal determines the actual physical layer resource allocation of each co-transmission resource within each co-transmission resource period, including time-frequency resource location, transmission format (such as MCS, RV), etc.

[0362] (6) Reference network node indication. The reference network node indication is used to indicate a reference network node (such as a reference cell or a reference TRP). The actual physical layer resource allocation of the pre-configured co-transmission resources can be determined based on the uplink and downlink resource configuration of the reference network node. For example, according to the uplink and downlink resource configuration of the reference network node and the physical layer resource configuration information of the co-transmission resources carried in the pre-configured signaling, the absolute position of the physical layer time-frequency resources of the co-transmission resources is determined.

[0363] In some embodiments, the reference network node indication may be the identifier of the reference network node, such as the cell identifier of the reference cell, the TRP identifier of the reference TRP, etc.

[0364] For example, assume that cell 1 and cell 2 participate in co-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 resources for actual receiving and transmission according to the downlink frequency configuration of cell 1 and the physical layer resource configuration information of the co-transmission resources. Cell 2 needs to obtain the downlink resource configuration of cell 1, and combine it with the physical layer resource configuration information of the co-transmission resources to determine the transmission resources and participate in downlink transmission. Cell 1 then performs downlink transmission according to the downlink resource configuration of its own cell and combines it with the physical layer resource configuration information of the co-transmission resources.

[0365] (7) Pre-configured resource type indication. The pre-configured resource type indication is used to indicate that the currently configured pre-configured resources are resources for co-transmission.

[0366] (8) Network node information participating in co-transmission. The network node information participating in co-transmission is used to indicate the network nodes participating in co-transmission, such as the cells or TRPs participating in co-transmission.

[0367] In some embodiments, the network node information participating in co-transmission may be the identifiers of the network nodes participating in co-transmission, such as cell identifiers or TRP identifiers, etc.

[0368] (9) Identifier for scrambling co-transmission.

[0369] For example, the identifier is a Radio Network Temporary Identity (RNTI) x-RNTI dedicated to scrambling co-transmission, or a high-layer identifier on the network side, etc. The terminal descrambles (downlink) or scrambles (uplink) the received signal based on this identifier for transmission that can be uniquely identified on both the network side and the terminal side.

[0370] In some embodiments, the first network node includes any one of the following:

[0371] (1) The primary cell under Carrier Aggregation (CA).

[0372] For example, the terminal receives RRC signaling in the primary cell under CA, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., cells other than the primary cell under this CA), and uplink resources for receiving uplink data by other cells or TRPs.

[0373] (2) The primary cell of the primary base station under Dual Connectivity (DC).

[0374] For example, the terminal receives RRC signaling in the primary cell of the primary base station under DC, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., cells other than the primary cell of the primary base station under this DC), and uplink resources for receiving uplink data by other cells or TRPs.

[0375] (3) The primary cell of the secondary base station under DC.

[0376] For example, the terminal receives RRC signaling in the primary cell of the secondary base station under DC, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., cells other than the primary cell of the secondary base station under this DC), and uplink resources for receiving uplink data by other cells or TRPs.

[0377] (4) The primary cell in a Timing Advance Group (TAG).

[0378] For example, the terminal receives RRC signaling in the primary cell in a TAG, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., cells other than the primary cell in this TAG), and uplink resources for receiving uplink data by other cells or TRPs.

[0379] (5) Any cell or any TRP to which the terminal is currently connected.

[0380] For example, the terminal receives RRC signaling in any cell or any TRP to which it is currently connected, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for sending or participating in sending downlink data by other cells or TRPs (i.e., cells or TRPs other than the currently connected ones), and uplink resources for receiving uplink data by other cells or TRPs.

[0381] (6) The distributed data unit connected to any TRP to which the terminal is currently connected. This distributed data unit can be a DU or a DDU.

[0382] For example, the terminal receives RRC signaling in the DU or DDU connected to any TRP to which it is currently connected, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for sending or participating in sending downlink data by other cells or TRPs (i.e., TRPs other than the currently connected one), and uplink resources for receiving uplink data by other cells or TRPs.

[0383] (7) The source cell or source TRP for co-transmission.

[0384] The source cell or source TRP refers to the dominant cell or dominant TRP for co-transmission. Relatively speaking, other cells or TRPs participating in co-transmission mainly assist the source cell or source TRP in up and downlink data transmission.

[0385] For example, the terminal receives RRC signaling in the source cell or source TRP for co-transmission, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for sending or participating in sending downlink data by other cells or TRPs (i.e., other than the source cell or source TRP), and uplink resources for receiving uplink data by other cells or TRPs.

[0386] (8) The distributed data unit connected to the source TRP for co-transmission. This distributed data unit can be a DU or a DDU.

[0387] For example, the terminal receives RRC signaling in the DU or DDU connected to the source TRP for co-transmission, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for sending or participating in sending downlink data by other cells or TRPs (i.e., other than the source TRP), and uplink resources for receiving uplink data by other cells or TRPs.

[0388] The information for pre-configuring co-transmission resources (or the pre-configuration information of co-transmission resources) included in the RRC signaling sent by the first network node is not limited in the specific determination method in this application. For example, it can be determined by the first network node and then sent to the terminal, and at the same time, the first network node can also send the pre-configuration information to other network nodes participating in co-transmission. Another example is that it can be determined by other network nodes and then sent to the first network node, and at the same time, the other network nodes can also send the pre-configuration information to other network nodes participating in co-transmission. Each network node participating in co-transmission needs to have the same understanding of the pre-configured co-transmission resources.

[0389] The data transmission method provided by the embodiments of this application pre-configures resources for co-transmission for the terminal by the network side. The terminal receives downlink data or sends uplink data based on the pre-configured co-transmission resources. Even if there is a transmission delay in the signaling interaction between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, co-transmission of different cells or TRPs to one terminal can still be achieved, thereby improving the transmission performance.

[0390] In some embodiments, the method further includes:

[0391] Receiving a Physical Downlink Control Channel (PDCCH) command sent by a second network node, where the PDCCH command is used to activate co-transmission resources.

[0392] Specifically, in some embodiments, after the network side pre-configures co-transmission resources through RRC signaling, the co-transmission resources are in an active state, and the terminal can use the co-transmission resources for uplink and downlink data transmission. In some embodiments, after the network side pre-configures co-transmission resources through RRC signaling, the initial state of the co-transmission resources is inactive, and the network side activates the co-transmission resources through a Physical Downlink Control Channel (PDCCH) command.

[0393] In some embodiments, the PDCCH command includes Downlink Control Information (DCI). Here, by way of example, other signaling or messages or commands that are well-known to those skilled in the art and can implement the PDCCH command of this application can also be applied here, and this is not limited.

[0394] In some embodiments, the PDCCH command includes one or more of the following information:

[0395] (1) The effective time information of co-transmission resources. This effective time information can be used to determine the actual effective time of co-transmission resources.

[0396] In some embodiments, the effective time information of the coordinated transmission resource includes:

[0397] The absolute time at which the coordinated transport resource becomes effective; or,

[0398] The time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.

[0399] In some embodiments, the PDCCH command includes DCI, for example, the DCI indicates the absolute effective time of the preconfigured 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 a system frame number, subframe number, time slot number, etc.

[0400] For another example, the DCI indicates the time deviation deltaT of the absolute effective time of the pre-configured collaborative transmission resources 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 resources.

[0401] (2) The number of cooperative transmission resources in each cooperative transmission resource period.

[0402] 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 from the start time of each coordinated transmission resource, there are N consecutive pre-configured resources in each coordinated transmission resource period. If the pre-configured coordinated transmission resources are effective once, the number of coordinated transmission resources is determined to be N.

[0403] (3) The number of times the collaborative transmission resource is effective.

[0404] 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 for a specified number of times (ie, K times), or determines that the coordinated transmission resource is valid within K periods (ie, the number of effective times can also be understood as the number of effective periods).

[0405] 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.

[0406] (4) Physical layer resource allocation information of collaborative transmission resources.

[0407] The physical layer resource allocation information includes time-frequency resource allocation, transmission mode and other information. The transmission mode (or transmission format) includes MCS, RV, etc. Based on the physical layer resource allocation information, the terminal determines the actual physical layer resource allocation of each co-transmission resource in each co-transmission resource period, including time-frequency resource location, transmission format (such as MCS, RV), etc.

[0408] (5) Reference network node indication. The reference network node indication is used to indicate the reference network node (such as a reference cell or a reference TRP), and the actual physical layer resource allocation of the pre-configured co-transmission resources can be determined based on the uplink and downlink resource configuration of the reference network node. For example, according to the uplink and downlink resource configuration of the reference network node and the physical layer resource allocation information of the co-transmission resources carried in the activation command, the absolute position of the physical layer time-frequency resources of the co-transmission resources is determined.

[0409] In some embodiments, the reference network node indication may be the identifier of the reference network node, such as the cell identifier of the reference cell, the TRP identifier of the reference TRP, etc.

[0410] For example, assume that cell 1 and cell 2 participate in co-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 received transmission resources according to the downlink frequency configuration of cell 1 and the physical layer resource allocation information of the co-transmission resources in the activation command. Cell 2 needs to obtain the downlink resource configuration of cell 1, and combine the physical layer resource allocation information of the co-transmission resources in the activation command to determine the transmission resources and participate in downlink transmission. Cell 1 then performs downlink transmission according to the downlink resource configuration of its own cell and combines the physical layer resource allocation information of the co-transmission resources in the activation command.

[0411] (6) Information of network nodes participating in co-transmission. The information of network nodes participating in co-transmission is used to indicate the network nodes participating in co-transmission, such as cells or TRPs participating in co-transmission.

[0412] In some embodiments, the information of network nodes participating in co-transmission may be the identifier of the network nodes participating in co-transmission, such as cell identifier or TRP identifier, etc.

[0413] In some embodiments, the second network node includes any one of the following:

[0414] The primary cell under CA;

[0415] The primary cell of the primary base station under DC;

[0416] The primary cell of the secondary base station under DC;

[0417] The primary cell in TAG;

[0418] Any cell or any TRP to which the terminal is currently connected;

[0419] The distributed data unit connected to any TRP to which the terminal is currently connected;

[0420] The source cell or source TRP for coordinated transmission;

[0421] The distributed data unit connected to the source TRP for coordinated transmission.

[0422] Wherein, 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.

[0423] In some embodiments, the method further includes:

[0424] Determine any one of the following times as the effective time of the coordinated transmission resource:

[0425] (1) The sending time or receiving time of the RRC signaling.

[0426] For example, after the terminal receives the RRC signaling for pre-configuring the coordinated transmission resource, determine the sending time of the RRC signaling, and determine the sending time of the RRC signaling as the actual effective time of the coordinated transmission resource.

[0427] For example, after the terminal receives the RRC signaling for pre-configuring the coordinated transmission resource, determine the time of receiving the RRC signaling as the actual effective time of the coordinated transmission resource.

[0428] In some embodiments, the network side takes the sending time of the RRC signaling as the actual effective time of the coordinated transmission resource, and the terminal side takes the receiving time of the RRC signaling as the actual effective time of the coordinated transmission resource.

[0429] In the case of taking the sending time or receiving time of the RRC signaling as the effective time of the coordinated transmission resource, the RRC signaling needs to include specific resource allocation information, that is, it is configured and activated through the RRC signaling.

[0430] (2) In the RRC signaling, the time indicated by the effective time information of the coordinated transmission resource.

[0431] For example, the terminal takes the absolute effective time of the coordinated transmission resource indicated in the RRC signaling as the actual effective time of the coordinated transmission resource. Or, when the terminal receives the RRC signaling, determine the sending time of the RRC signaling, and add the time deviation value indicated in the RRC signaling to the sending time of the RRC signaling to determine the actual effective time of the coordinated transmission resource. In some embodiments, the time deviation value can also be specified by the protocol.

[0432] (3) The transmission time or reception time of the PDCCH command for activating the coordinated transmission resource.

[0433] For example, after the terminal receives the PDCCH command for activating the coordinated transmission resource, it determines the transmission time of the PDCCH command and determines the transmission time of the PDCCH command as the actual effective time of the coordinated transmission resource.

[0434] For example, after the terminal receives the PDCCH command for activating the coordinated transmission resource, it determines the time when it receives the PDCCH command as the actual effective time of the coordinated transmission resource.

[0435] In some embodiments, the network side uses the transmission time of the PDCCH command as the actual effective time of the coordinated transmission resource, and the terminal side uses the reception time of the PDCCH command as the actual effective time of the coordinated transmission resource.

[0436] (4) In the PDCCH command for activating the coordinated transmission resource, the time indicated by the effective time information of the coordinated transmission resource.

[0437] For example, the terminal uses the absolute effective time of the coordinated transmission resource indicated in the PDCCH command as the actual effective time of the coordinated transmission resource. Or, when the terminal receives the PDCCH command, it determines the transmission time of the PDCCH command, adds the time deviation value indicated in the PDCCH command to the transmission time of the PDCCH command, and determines the actual effective time of the coordinated transmission resource. In some embodiments, the time deviation value can also be specified by the protocol.

[0438] In some embodiments, the method further includes:

[0439] Determine the coordinated transmission resource based on the resource configuration of the third network node;

[0440] Wherein, when the coordinated transmission resource allocates 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,

[0441] When the coordinated transmission resource allocates physical layer resources by the PDCCH command for activating the coordinated transmission resource, 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.

[0442] Specifically, the actual physical layer resource allocation for coordinated transmission (the absolute position of the physical layer time-frequency resources) needs to be determined based on the uplink and downlink resource configurations of a specific network node, which is referred to as the third network node. It can be understood that the actual physical layer resource allocation of the coordinated transmission resources corresponds to or is associated with the third network node.

[0443] For example, the coordinated transmission resources allocate physical layer resources by RRC signaling. The terminal performs time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configurations 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.

[0444] For example, the coordinated transmission resources allocate 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 configurations 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.

[0445] For example, the coordinated transmission resources allocate physical layer resources by PDCCH command. The terminal performs time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configurations 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.

[0446] For example, the coordinated transmission resources allocate physical layer resources by PDCCH command, 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 configurations 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.

[0447] For example, the coordinated transmission resources allocate physical layer resources by PDCCH command, and a 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 configurations 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.

[0448] In some embodiments, the method further includes:

[0449] Determining the third network node as the timing synchronization reference network node.

[0450] Specifically, to better perform timing synchronization, the network side and the terminal side can determine the timing synchronization relationship for downlink transmission or uplink transmission based on the same timing synchronization reference network node. In some embodiments, the third network node (such as the cell or TRP corresponding to the coordinated transmission resource allocation described above) can be used as the timing synchronization reference network node.

[0451] Figure 3 FIG. [0000917] is a schematic flow chart of a coordinated transmission resource allocation method provided by an embodiment of the present application. This method is applied to a first network node, such as Figure 3 shown, the method includes the following steps:

[0452] Step 300: Send radio resource control (RRC) signaling to the terminal. The RRC signaling is used to pre-configure coordinated transmission resources.

[0453] Specifically, the coordinated transmission resources are the resources used for coordinated transmission, which refer to: downlink resources for transmitting or participating in transmitting downlink data by other cells or other TRPs (i.e., non-current cells, non-current TRPs), and uplink resources for receiving uplink data by other cells or other TRPs.

[0454] In some embodiments, the coordinated transmission resources are resources that take effect periodically, or resources that take effect once, or resources that take effect a specified number of times.

[0455] In an embodiment of the present application, the network side pre-configures coordinated transmission resources for the terminal through RRC signaling. After the terminal configures the pre-configured coordinated transmission resources on the network side, at the moment when the pre-configured coordinated transmission resources take effect, the terminal receives downlink data or sends uplink data according to the physical layer resources and transmission formats allocated for the pre-configured coordinated transmission resources. Correspondingly, each cell or TRP on the network side participating in the coordinated transmission also sends downlink data or receives uplink data at the moment when the pre-configured coordinated transmission resources take effect, according to the physical layer resources and transmission formats allocated in the pre-configured coordinated transmission resources. In this way, even if there is a transmission delay in the signaling interaction between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, coordinated transmission of different cells or TRPs to a terminal can still be achieved.

[0456] In some embodiments, the RRC signaling includes one or more of the following information:

[0457] (1) The effective time information of the coordinated transmission resources. This effective time information can be used to determine the actual effective time of the coordinated transmission resources.

[0458] In some embodiments, the effective time information of the coordinated transmission resources includes:

[0459] The absolute effective moment of the coordinated transmission resources; or,

[0460] The time deviation of the absolute effective moment of the coordinated transmission resource relative to the transmission moment of the effective time information.

[0461] For example, the RRC signaling pre-configures the absolute effective moment of the coordinated transmission resource, and the terminal determines the actual effective time of the coordinated transmission resource based on this absolute effective moment. The absolute effective moment can be a value represented in units such as year, month, day, hour, minute, second, millisecond, etc., or a value represented by a system frame number, sub-frame number, time slot number, etc.

[0462] For another example, the time deviation deltaT of the absolute effective moment of the coordinated transmission resource pre-configured by the RRC signaling relative to the transmission moment of this RRC signaling. When the terminal receives the RRC signaling, it determines the transmission moment of this RRC signaling, adds the pre-configured time deviation value in this RRC signaling to the transmission moment of the RRC signaling, and determines the actual effective time of the coordinated transmission resource.

[0463] (2) The period of the coordinated transmission resource.

[0464] For example, the coordinated transmission resource pre-configured by the RRC signaling is a periodically effective resource, and the terminal periodically determines the start moment of each coordinated transmission resource based on the effective moment of this coordinated transmission resource and the period value of this coordinated transmission resource.

[0465] (3) The number of coordinated transmission resources within each coordinated transmission resource period. Here, the coordinated transmission resource period is the period of the pre-configured coordinated transmission resource.

[0466] For example, assume that the number of coordinated transmission resources pre-configured by the RRC signaling within each coordinated transmission resource period is N. The terminal determines that there are N consecutive pre-configured resources within each coordinated transmission resource period starting from the start moment of each coordinated transmission resource. If the pre-configured coordinated transmission resource is effective once, it determines that the number of pre-configured coordinated transmission resources is N.

[0467] (4) The number of effective times of the coordinated transmission resource.

[0468] For example, assume that the number of effective times of the coordinated transmission resource pre-configured by the RRC signaling 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).

[0469] (5) The physical layer resource configuration information of the coordinated transmission resource.

[0470] The physical layer resource configuration information includes time-frequency resource configuration, transmission mode and other information. The transmission mode (or transmission format) includes MCS, RV, MIMO precoding matrix information, etc. Based on the physical layer resource configuration information, the terminal determines the actual physical layer resource allocation for each co-transmission resource within each co-transmission resource period, including time-frequency resource location, transmission format (such as MCS, RV), etc.

[0471] (6) Reference network node indication. The reference network node indication is used to indicate a reference network node (such as a reference cell or a reference TRP). The actual physical layer resource allocation of the pre-configured co-transmission resources can be determined based on the uplink and downlink resource configuration of the reference network node. For example, according to the uplink and downlink resource configuration of the reference network node and the physical layer resource configuration information of the co-transmission resources carried in the pre-configured signaling, the absolute position of the physical layer time-frequency resources of the co-transmission resources is determined.

[0472] In some embodiments, the reference network node indication may be the identifier of the reference network node, such as the cell identifier of the reference cell, the TRP identifier of the reference TRP, etc.

[0473] For example, assume that cell 1 and cell 2 participate in co-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 resources for actual receiving and transmission according to the downlink frequency configuration of cell 1 and the physical layer resource configuration information of the co-transmission resources. Cell 2 needs to obtain the downlink resource configuration of cell 1, combine it with the physical layer resource configuration information of the co-transmission resources, determine the transmission resources, and participate in downlink transmission. Cell 1 then performs downlink transmission according to the downlink resource configuration of its own cell and combines it with the physical layer resource configuration information of the co-transmission resources.

[0474] (7) Pre-configured resource type indication. The pre-configured resource type indication is used to indicate that the currently configured pre-configured resources are resources for co-transmission.

[0475] (8) Network node information participating in co-transmission. The network node information participating in co-transmission is used to indicate the network nodes participating in co-transmission, such as the cells or TRPs participating in co-transmission.

[0476] In some embodiments, the network node information participating in co-transmission may be the identifier of the network node participating in co-transmission, such as the cell identifier or the TRP identifier, etc.

[0477] (9) Identifier for scrambling co-transmission.

[0478] For example, the identifier is a wireless network temporary identifier x-RNTI or a network-side high-layer identifier dedicated to scrambling co-transmission. The terminal descrambles (downlink) or scrambles (uplink) the received signal based on this identifier for transmissions that can be uniquely identified on both the network side and the terminal side.

[0479] In some embodiments, the first network node includes any one of the following:

[0480] (1) The primary cell under CA.

[0481] For example, the terminal receives RRC signaling in the primary cell under CA, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., cells other than the primary cell under CA), and uplink resources for receiving uplink data by other cells or TRPs.

[0482] (2) The primary cell of the primary base station under DC.

[0483] For example, the terminal receives RRC signaling in the primary cell of the primary base station under DC, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., cells other than the primary cell of the primary base station under DC), and uplink resources for receiving uplink data by other cells or TRPs.

[0484] (3) The primary cell of the secondary base station under DC.

[0485] For example, the terminal receives RRC signaling in the primary cell of the secondary base station under DC, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., cells other than the primary cell of the secondary base station under DC), and uplink resources for receiving uplink data by other cells or TRPs.

[0486] (4) The primary cell in a TAG.

[0487] For example, the terminal receives RRC signaling in the primary cell in a TAG, and this RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., cells other than the primary cell in the TAG), and uplink resources for receiving uplink data by other cells or TRPs.

[0488] (5) Any cell or any TRP to which the terminal is currently connected.

[0489] For example, the terminal receives RRC signaling in any cell or any TRP to which it is currently connected. The RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., cells or TRPs other than the currently connected cell or TRP), and uplink resources for receiving uplink data by other cells or TRPs.

[0490] (6) The distributed data unit connected to any TRP to which the terminal is currently connected. The distributed data unit can be a DU or a DDU.

[0491] For example, the terminal receives RRC signaling in the DU or DDU connected to any TRP to which it is currently connected. The RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., TRPs other than the currently connected TRP), and uplink resources for receiving uplink data by other cells or TRPs.

[0492] (7) The source cell or source TRP for co-transmission.

[0493] The source cell or source TRP refers to the dominant cell or dominant TRP for co-transmission. Relatively, other cells or TRPs participating in co-transmission mainly assist the source cell or source TRP in transmitting uplink and downlink data.

[0494] For example, the terminal receives RRC signaling in the source cell or source TRP for co-transmission. The RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., other than the source cell or source TRP), and uplink resources for receiving uplink data by other cells or TRPs.

[0495] (8) The distributed data unit connected to the source TRP for co-transmission. The distributed data unit can be a DU or a DDU.

[0496] For example, the terminal receives RRC signaling in the DU or DDU connected to the source TRP for co-transmission. The RRC signaling is used to pre-configure co-transmission resources. The pre-configured co-transmission resources are: downlink resources for transmitting or participating in transmitting downlink data by other cells or TRPs (i.e., other than the source TRP), and uplink resources for receiving uplink data by other cells or TRPs.

[0497] The information for pre-configuring the coordinated transmission resources (or the pre-configuration information of the coordinated transmission resources) included in the RRC signaling sent by the first network node is not limited in this application in terms of its specific determination method. For example, it can be determined by the first network node and then sent to the terminal, and at the same time, the first network node can also send the pre-configuration information to other network nodes participating in the coordinated transmission. Another example is that it can be determined by other network nodes and then sent to the first network node, and at the same time, the other network nodes can also send the pre-configuration information to other network nodes participating in the coordinated transmission. Each network node participating in the coordinated transmission needs to have the same understanding of the pre-configured coordinated transmission resources.

[0498] The data transmission method provided in the embodiments of this application pre-configures resources for coordinated transmission for the terminal by the network side, and the terminal receives downlink data or sends uplink data based on the pre-configured coordinated transmission resources. Even if there is a transmission delay in the signaling interaction between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, coordinated transmission of different cells or TRPs to a terminal can still be achieved, thereby improving the transmission performance.

[0499] In some embodiments, the method further includes:

[0500] Sending a Physical Downlink Control Channel (PDCCH) command to the terminal, where the PDCCH command is used to activate the coordinated transmission resources.

[0501] Specifically, in some embodiments, after the network side pre-configures the coordinated transmission resources through RRC signaling, the coordinated transmission resources are in an active state, and the terminal can use the coordinated transmission resources for uplink and downlink data transmission. In some embodiments, after the network side pre-configures the coordinated transmission resources through RRC signaling, the initial state of the coordinated transmission resources is inactive, and the network side activates the coordinated transmission resources through a PDCCH command.

[0502] In some embodiments, the PDCCH command includes one or more of the following information:

[0503] (1) The effective time information of the coordinated transmission resources. This effective time information can be used to determine the actual effective time of the coordinated transmission resources.

[0504] In some embodiments, the effective time information of the coordinated transmission resources includes:

[0505] The absolute effective moment of the coordinated transmission resources; or,

[0506] The time deviation of the absolute effective moment of the coordinated transmission resources relative to the sending moment of the effective time information.

[0507] For example, the DCI indicates the absolute effective time of the preconfigured 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 by a system frame number, subframe number, time slot number, etc.

[0508] For another example, the DCI indicates the time deviation deltaT of the absolute effective time of the pre-configured collaborative transmission resources 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 resources.

[0509] (2) The number of cooperative transmission resources in each cooperative transmission resource period.

[0510] 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 from the start time of each coordinated transmission resource, there are N consecutive pre-configured resources in each coordinated transmission resource period. If the pre-configured coordinated transmission resources are effective once, the number of coordinated transmission resources is determined to be N.

[0511] (3) The number of times the collaborative transmission resource is effective.

[0512] 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 for a specified number of times (ie, K times), or determines that the coordinated transmission resource is valid within K periods (ie, the number of effective times can also be understood as the number of effective periods).

[0513] 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.

[0514] (4) Physical layer resource allocation information of collaborative transmission resources.

[0515] 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, RV, etc. Based on the physical layer resource allocation information, 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 position, transmission format (such as MCS, RV), etc.

[0516] (5) Reference network node indication. This reference network node indication is used to indicate a reference network node (such as a reference cell or a reference TRP), and the actual physical layer resource allocation of the pre-configured co-transmission resources can be determined based on the uplink and downlink resource configuration of this reference network node. For example, according to the uplink and downlink resource configuration of the reference network node and the physical layer resource allocation information of the co-transmission resources carried in the activation command, determine the absolute position of the physical layer time-frequency resources of the co-transmission resources.

[0517] In some embodiments, the reference network node indication may be the identifier of the reference network node, such as the cell identifier of the reference cell, the TRP identifier of the reference TRP, etc.

[0518] For example, assume that Cell 1 and Cell 2 participate in co-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 resources for actual receiving and transmission according to the downlink frequency configuration of Cell 1 and the physical layer resource allocation information of the co-transmission resources in the activation command. Cell 2 needs to obtain the downlink resource configuration of Cell 1, and combine the physical layer resource allocation information of the co-transmission resources in the activation command to determine the transmission resources and participate in downlink transmission. Cell 1 then performs downlink transmission according to the downlink resource configuration of its own cell and combines the physical layer resource allocation information of the co-transmission resources in the activation command.

[0519] (6) Information of network nodes participating in co-transmission. This information of network nodes participating in co-transmission is used to indicate the network nodes participating in co-transmission, such as the cells or TRPs participating in co-transmission.

[0520] In some embodiments, the information of network nodes participating in co-transmission may be the identifiers of the network nodes participating in co-transmission, such as cell identifiers or TRP identifiers, etc.

[0521] In some embodiments, the method further includes:

[0522] Interact with other network nodes participating in co-transmission to exchange the pre-configured information of co-transmission resources and / or the activation information of co-transmission resources 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.

[0523] Specifically, each network node participating in co-transmission needs to have the same understanding of the pre-configured co-transmission resources, and there can be various ways to specifically exchange the co-transmission resource information.

[0524] For example, if the cells or TRPs participating in co-transmission belong to different distributed data units (DU or DDU), exchange the pre-configured information of co-transmission resources and / or the activation information through the interface between distributed data units.

[0525] For example, the cells or TRPs participating in coordinated transmission belong to different distributed data units (DU or DDU), and the central control plane node (CU or CCU) interacts with 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 in 5G).

[0526] For example, the cells or TRPs participating in coordinated transmission belong to different base stations, and the pre-configuration information and / or activation information of the coordinated transmission resources are interacted through the interface between the base stations (similar to the Xn interface in 5G).

[0527] In some embodiments, the method further includes:

[0528] Determine any one of the following moments as the effective moment of the coordinated transmission resources:

[0529] The sending moment or receiving moment of the RRC signaling;

[0530] In the RRC signaling, the moment indicated by the effective time information of the coordinated transmission resources;

[0531] The sending moment or receiving moment of the PDCCH command used to activate the coordinated transmission resources;

[0532] In the PDCCH command used to activate the coordinated transmission resources, the moment indicated by the effective time information of the coordinated transmission resources.

[0533] In some embodiments, the method further includes:

[0534] Determine the coordinated transmission resources based on the resource configuration of the third network node;

[0535] Wherein, when the coordinated transmission resources allocate 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,

[0536] When the coordinated transmission resources allocate physical layer resources by the 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.

[0537] Specifically, the allocation of the actual physical layer resources for coordinated 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. This specific network node is called the third network node. It can be understood that the allocation of the actual physical layer resources of the coordinated transmission resources corresponds to or is associated with the third network node.

[0538] For example, the co - transmission resources allocate physical layer resources through RRC signaling. The network side determines the time - frequency resource allocation of the co - 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 co - transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP specified in the RRC signaling.

[0539] For example, the co - transmission resources allocate physical layer resources through PDCCH commands. The network side determines the time - frequency resource allocation of the co - 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 co - 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 co - transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP specified in the PDCCH command.

[0540] In some embodiments, the method further includes:

[0541] Determine the third network node as the timing synchronization reference network node.

[0542] Specifically, for better 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 embodiments, the third network node can be used as the timing synchronization reference network node.

[0543] The methods provided in the embodiments of this application are based on the same inventive concept. Therefore, the implementation of each method can be referred to each other, and the repeated parts will not be elaborated.

[0544] The following uses examples of specific application scenarios to illustrate the methods provided in the above - mentioned embodiments of this application.

[0545] Example 1: The RRC signaling pre - configures and activates co - transmission resources, and the co - transmission resources take effect periodically.

[0546] Base station side process:

[0547] Step 1: The base station side sends RRC signaling to the terminal for pre - configuring co - transmission resources.

[0548] (1) The base station side node that sends the RRC signaling is any one of the following:

[0549] a) A specific cell: such as the primary cell under CA, or the primary cell of the primary base station under DC, or the primary cell of the secondary base station under DC, or the primary cell in a TAG;

[0550] b) Any cell or TRP to which the terminal is currently connected, or the DU / DDU connected to the TRP.

[0551] c) The source cell or source TRP that performs coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0552] (2) The RRC signaling includes one or more of the following information:

[0553] a) The absolute effective time of the coordinated transmission resource;

[0554] b) The time deviation deltaT of the effective time of the coordinated transmission resource relative to the transmission time of the RRC signaling (optional, mutually exclusive with a));

[0555] c) The period of the coordinated transmission resource (mandatory);

[0556] d) The number N of preconfigured resources within each coordinated transmission resource period (optional);

[0557] e) The physical layer resource configuration of the coordinated transmission resource, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory);

[0558] f) The reference cell or reference TRP (optional);

[0559] g) The preconfigured resource type indication, indicating that the currently configured preconfigured resource is for coordinated transmission (optional);

[0560] h) The cells or TRPs participating in coordinated transmission (optional);

[0561] i) The identifier used for scrambling the coordinated transmission, such as x-RNTI, the network side high-layer identifier (optional).

[0562] Step 2: The cells or TRPs on the base station side participating in coordinated transmission send downlink transmissions or receive uplink transmissions at the effective time of the coordinated transmission resource according to the physical layer resources and transmission formats allocated for the coordinated transmission. The timing synchronization relationship of the downlink transmission or uplink transmission is determined according to the timing synchronization relationship between the network node and the terminal associated with the physical layer resources allocated for the coordinated transmission. The specific network node is the reference cell or reference TRP configured by the RRC signaling, or the cell or TRP that sends the RRC signaling.

[0563] Terminal-side process:

[0564] Step 1: Receive the RRC signaling of the preconfigured coordinated transmission resource sent by the base station side.

[0565] (1) The RRC signaling is received at any of the following base station side nodes:

[0566] a) The terminal receives the RRC signaling in a specific cell, which is the primary cell under CA, or the primary cell of the primary base station under DC, or the primary cell of the secondary base station under DC, or the primary cell in a TAG;

[0567] b) The terminal receives the RRC signaling in any cell or TRP to which it is currently connected, or in the DU / DDU connected to the TRP;

[0568] c) The terminal receives the RRC signaling from a source cell or source TRP that can perform coordinated transmission, or from the DU / DDU connected to the source TRP.

[0569] (2) The RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:

[0570] a) The absolute effective time of the coordinated transmission resource (optional, mutually exclusive with b)), and the terminal determines the actual effective time of the coordinated transmission resource based on this parameter;

[0571] b) The time deviation deltaT of the effective time of the coordinated transmission resource relative to the sending time of the RRC signaling (optional, mutually exclusive with a)), and when receiving the RRC signaling, the terminal determines the sending time of the RRC signaling, and adds this time deviation deltaT to determine the actual effective time of the coordinated transmission resource;

[0572] c) The period of the coordinated transmission resource (mandatory), and 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;

[0573] d) The number N of preconfigured resources within each coordinated transmission resource period (optional), and the terminal determines that there are N consecutive preconfigured resources within each coordinated transmission resource period starting from the start time of each coordinated transmission resource;

[0574] e) The physical layer resource configuration of the coordinated transmission resource, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory), and 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.;

[0575] f) The reference cell or reference TRP (optional), and the terminal combines e) and f) to determine the actual physical layer resource allocation of the coordinated transmission resource, and this actual physical layer resource allocation is associated with the uplink and downlink resource configurations of a specific cell or TRP. If this item is configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resource based on the uplink and downlink resource configurations of the preconfigured reference cell or reference TRP. If this item is not configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resource based on the uplink and downlink resource configurations of the cell or TRP that sends the RRC signaling;

[0576] g) Pre-configured resource type indication, indicating that the currently configured pre-configured resource is a resource for coordinated transmission (optional);

[0577] h) Cells or TRPs participating in coordinated transmission (optional). If this parameter exists, the terminal determines the cells or TRPs participating in coordinated transmission based on this parameter;

[0578] i) Identification for scrambling coordinated transmission, such as x-RNTI, network-side high-layer identification (optional). If this parameter exists, the terminal descrambles (downlink) or scrambles (uplink) the received signal based on this identification for transmission that can be uniquely identified on both the base station side and the terminal side.

[0579] Step 2: After the terminal pre-configures coordinated transmission resources on the network side, at the moment when the coordinated transmission resources become effective, the terminal receives downlink transmission or sends uplink transmission according to the physical layer resources and transmission formats allocated for the coordinated transmission resources. The timing synchronization relationship of the downlink transmission or uplink transmission is determined according to the timing synchronization relationship between the network node and the terminal associated with the physical resources allocated for the coordinated transmission. This network node is specifically the reference cell or reference TRP configured by RRC signaling, or the cell or TRP that sends the RRC signaling.

[0580] Example 2: RRC signaling pre-configures and activates coordinated transmission resources, and the coordinated transmission resources become effective once or a specified number of times.

[0581] Base station side process:

[0582] Step 1: The base station side sends RRC signaling to the terminal for pre-configuring coordinated transmission resources.

[0583] (1) The base station side node that sends this RRC signaling is any one of the following:

[0584] a) A specific cell: such as the primary cell in CA, or the primary cell of the primary base station in DC, or the primary cell of the secondary base station in DC, or the 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 for coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0587] (2) This RRC signaling includes one or more of the following information:

[0588] a) The absolute effective moment of the coordinated transmission resources (optional, mutually exclusive with b);

[0589] b) The time deviation deltaT of the effective time of the coordinated transmission resource relative to the transmission time of this RRC signaling (optional, mutually exclusive with a));

[0590] c) The period of the coordinated transmission resource (optional);

[0591] d) The number N of preconfigured resources within each coordinated transmission resource period (optional);

[0592] e) The number of times K that the coordinated transmission resource becomes effective (optional);

[0593] f) The physical layer resource configuration of the coordinated transmission resource, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory);

[0594] g) The reference cell or reference TRP (optional);

[0595] h) The preconfigured resource type indication, indicating that the currently configured preconfigured resource is a resource for coordinated transmission (optional)

[0596] i) The cells or TRPs participating in the coordinated transmission (optional);

[0597] j) The identifier for scrambling the coordinated transmission, such as x-RNTI, the network side high-layer identifier (optional).

[0598] Step 2: The cells or TRPs on the base station side participating in the coordinated transmission send downlink transmissions or receive uplink transmissions at the effective time of the coordinated transmission resource according to the physical layer resources and transmission formats allocated by the coordinated transmission resource. The timing synchronization relationship of the downlink transmission or uplink transmission is determined according to the timing synchronization relationship between the network node and the terminal associated with the physical layer resources allocated by the coordinated transmission. The specific network node is the reference cell or reference TRP configured by the RRC signaling, or the cell or TRP that sends the RRC signaling.

[0599] Terminal side process:

[0600] Step 1: Receive the RRC signaling of the preconfigured coordinated transmission resource sent by the base station side.

[0601] (1) This RRC signaling is received on any of the following base station side nodes:

[0602] a) The terminal receives this RRC signaling in a specific cell, and this specific cell is the primary cell under CA, or the primary cell of the primary base station under DC, or the primary cell of the secondary base station under DC, or the primary cell in a TAG;

[0603] b) The terminal receives this RRC signaling in any cell or TRP currently connected, or in the DU / DDU connected to the TRP;

[0604] c) The terminal receives the RRC signaling from a source cell or a source TRP capable of performing coordinated transmission, or a DU / DDU connected to the source TRP.

[0605] (2) The RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:

[0606] a) The absolute effective moment of the coordinated transmission resource (optional, mutually exclusive with b)), and the terminal determines the actual effective time of the coordinated transmission resource based on this parameter;

[0607] b) The time deviation deltaT of the effective moment of the coordinated transmission resource relative to the transmission moment of the RRC signaling (optional, mutually exclusive with a)), and when receiving the RRC signaling, the terminal determines the transmission moment of the RRC signaling, and adds the time deviation deltaT to determine the actual effective time of the coordinated transmission resource;

[0608] c) The period of the coordinated transmission resource (optional), this item is configured simultaneously with item e) "the number of times K that the coordinated transmission resource is effective", and the terminal periodically determines the start moment of each coordinated transmission resource based on the effective moment and the period value of the coordinated transmission resource;

[0609] d) The number N of pre-configured resources (optional), and the terminal determines that starting from the start moment of each coordinated transmission resource, if the coordinated transmission resource is periodically effective or effective within several periods, there are N consecutive pre-configured resources within each coordinated transmission resource period, and if the coordinated transmission resource is effective once, the number of pre-configured resources is determined to be N;

[0610] e) The number of times K that the coordinated transmission resource is effective (optional), if this parameter is configured, the coordinated transmission resource is effective within K periods, and if this parameter is not configured, the coordinated transmission resource is effective once;

[0611] f) The physical layer resource configuration of the coordinated transmission resource, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory), and 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 position, transmission format MCS, RV, etc.;

[0612] g) The reference cell or reference TRP (optional), and the terminal combines f) and g) to determine the actual physical layer resource allocation of the coordinated transmission resource, and this actual physical layer resource allocation is associated with the uplink and downlink resource configurations of a specific cell or TRP. If this item is configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resource based on the uplink and downlink resource configurations of the pre-configured reference cell or reference TRP. If this item is not configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resource based on the uplink and downlink resource configurations of the cell or TRP that sends the RRC signaling;

[0613] h) Pre - configured resource type indication, indicating that the currently configured pre - configured resource is a resource for coordinated transmission (optional);

[0614] i) Cells or TRPs participating in coordinated transmission (optional). If this parameter exists, the terminal determines the cells or TRPs participating in coordinated transmission based on this parameter;

[0615] j) Identification for scrambling the coordinated transmission resources, such as x - RNTI, network - side high - layer identification (optional). If this parameter exists, the terminal descrambles (downlink) or scrambles (uplink) the received signal based on this identification for transmission that can be uniquely identified on both the base - station side and the terminal side.

[0616] Step 2: At the moment when the coordinated transmission resources become effective, the terminal receives downlink transmission or sends uplink transmission according to the physical - layer resources and transmission format allocated for the coordinated transmission resources. The timing synchronization relationship for downlink transmission or uplink transmission is determined according to the timing synchronization relationship between the network node and the terminal associated with the physical resources allocated for coordinated transmission. This network node is specifically the reference cell or reference TRP configured by RRC signaling, or the cell or TRP that sends the RRC signaling.

[0617] Example 3: The RRC signaling pre - configures the coordinated transmission resources, and the PDCCH command activates the coordinated transmission resources, and the coordinated transmission resources become effective periodically.

[0618] Base - station - side process:

[0619] Step 1: The base - station side sends RRC signaling to the terminal for pre - configuring the coordinated transmission resources.

[0620] (1) The base - station - side node that sends this RRC signaling is any one of the following:

[0621] a) A specific cell: such as the primary cell in CA, or the primary cell of the primary base - station in DC, or the primary cell of the secondary base - station in DC, or the primary cell in a TAG;

[0622] b) Any cell or TRP to which the terminal is currently connected, or the DU / DDU connected to the TRP.

[0623] c) The source cell or source TRP for coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0624] (2) This RRC signaling includes one or more of the following information:

[0625] a) The period of the coordinated transmission resources (mandatory);

[0626] b) The number N of pre - configured resources within each coordinated - transmission resource period (optional);

[0627] c) Reference cell or reference TRP (optional);

[0628] d) Preconfigured resource type indication, indicating that the currently configured preconfigured resource is a resource for coordinated transmission (optional);

[0629] e) Cells or TRPs participating in coordinated transmission (optional);

[0630] f) Identification for scrambling coordinated transmission, such as x-RNTI, network side high-layer identification (optional).

[0631] Step 2: The base station side sends a PDCCH command to the terminal to activate the preconfigured coordinated transmission resources.

[0632] (1) The base station side node that sends this PDCCH command is any one of the following:

[0633] a) A specific cell: such as the primary cell in CA, or the primary cell of the primary base station in DC, or the primary cell of the secondary base station in DC, or the primary cell in a TAG;

[0634] b) Any cell or TRP to which the terminal is currently connected, or the DU / DDU connected to the TRP.

[0635] c) The source cell or source TRP for coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0636] (2) The PDCCH command for activating the preconfigured coordinated transmission resources includes one or more of the following information:

[0637] a) The absolute effective moment of the coordinated transmission resources (optional), mutually exclusive with b);

[0638] b) The time deviation deltaT of the effective moment of the coordinated transmission resources relative to the sending moment of this PDCCH command (optional), mutually exclusive with a);

[0639] c) The number N of preconfigured resources within each coordinated transmission resource period (optional), this parameter can be not configured if it has been configured in the RRC signaling in Step 1;

[0640] d) The physical layer resource configuration of the coordinated transmission resources, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory);

[0641] e) Reference cell or reference TRP (optional), this parameter can be not configured if it has been configured in the RRC signaling in Step 1;

[0642] f) Cells or TRPs participating in coordinated transmission (optional), this parameter may not be configured if the RRC signaling in step 1 has been configured.

[0643] Step 3: The cells or TRPs on the base station side participating in coordinated transmission, at the moment when the coordinated transmission resources become effective, send downlink transmissions or receive uplink transmissions according to the physical layer resources and transmission formats allocated by the coordinated transmission resources. The timing synchronization relationship of the downlink transmission or uplink transmission is determined according to the timing synchronization relationship between the network node and the terminal associated with the physical layer resources allocated by the coordinated transmission. This 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.

[0644] Terminal-side procedures:

[0645] Step 1: Receive the RRC signaling for pre-configured coordinated transmission resources sent by the base station side.

[0646] (1) This RRC signaling is received on any of the following base station side nodes:

[0647] a) The terminal receives this RRC signaling in a specific cell, which is the primary cell under CA, or the primary cell of the primary base station under DC, or the primary cell of the secondary base station under DC, or the primary cell in a TAG;

[0648] b) The terminal receives this RRC signaling in any cell or TRP currently connected, or in the DU / DDU connected to the TRP;

[0649] c) The terminal receives this RRC signaling from the source cell or source TRP that can perform coordinated transmission, or from the DU / DDU connected to the source TRP.

[0650] (2) This RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:

[0651] a) The period of the coordinated transmission resources (mandatory). When the pre-configured coordinated transmission resources are activated by the PDCCH command, these resources become effective periodically according to the configured period value;

[0652] b) The number N of pre-configured resources within each coordinated transmission resource period (optional). When the coordinated transmission resources are activated by the PDCCH command, the terminal determines that there are N consecutive pre-configured resources within each coordinated transmission resource period starting from the start time of each coordinated transmission resource;

[0653] c) The reference cell or reference TRP (optional);

[0654] d) The pre-configured resource type indication, indicating that the currently configured pre-configured resources are for coordinated transmission (optional);

[0655] e) Cells or TRPs participating in coordinated transmission (optional);

[0656] f) Identification for scrambling coordinated transmission resources, such as x-RNTI, network side high layer identification (optional).

[0657] Step 2: The terminal receives the PDCCH command sent by the base station side and activates the pre-configured coordinated transmission resources.

[0658] (1) The base station side node sending this PDCCH command is any one of the following:

[0659] a) The terminal receives this PDCCH command in a specific cell, and this specific cell is the primary cell under CA, or the primary cell of the primary base station under DC, or the primary cell of the secondary base station under DC, or the primary cell in a TAG;

[0660] b) The terminal receives this PDCCH command in any cell or TRP currently connected, or in the DU / DDU connected to the TRP;

[0661] c) The terminal receives this PDCCH command from the source cell or source TRP that can perform coordinated transmission, or from the DU / DDU connected to the source TRP.

[0662] (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:

[0663] a) The absolute effective moment of the coordinated transmission resources (optional, mutually exclusive with b)), and the terminal determines the actual effective time of the coordinated transmission resources based on this parameter;

[0664] b) The time deviation deltaT of the effective moment of the coordinated transmission resources relative to the sending moment of this PDCCH command (optional, mutually exclusive with a)), and the terminal determines the actual effective time of the coordinated transmission resources based on this parameter;

[0665] c) The number N of pre-configured resources within each coordinated transmission resource period (optional), if this parameter has been configured in the RRC signaling in Step 1, it can be not configured, and the terminal determines that there are N consecutive pre-configured resources within each coordinated transmission resource period based on the number of pre-configured resources indicated in the RRC signaling or the PDCCH command;

[0666] d) The physical layer resource configuration of the coordinated transmission resources, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory), and the terminal determines the actual physical layer resource allocation of each pre-configured resource within each coordinated transmission resource period, including time-frequency resource location, transmission format MCS, RV, etc.;

[0667] e) Reference cell or reference TRP (optional), which may not be configured if the RRC signaling in step 1 has been configured. The terminal determines the actual physical layer resource allocation of the coordinated transmission resource by combining d) and e). The actual physical layer resource allocation is associated with the uplink and downlink resource configurations 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 resource based on the uplink and downlink resource configurations of the reference cell or reference TRP indicated by the RRC signaling or PDCCH command. If the reference cell or reference TRP is not configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resource based on the uplink and downlink resource configurations of the cell or TRP that sends the PDCCH command.

[0668] f) Cells or TRPs participating in the coordinated transmission (optional), which may not be configured if the RRC signaling in step 1 has been configured. If there is such a parameter, the terminal determines the cells or TRPs participating in the coordinated transmission based on the cells or TRPs participating in the coordinated transmission indicated by the RRC signaling or PDCCH command.

[0669] Step 3: After the coordinated transmission resource becomes effective, on each coordinated transmission resource, according to the physical layer resources and transmission formats allocated for the coordinated transmission resource, if the RRC signaling indicates an identifier for scrambling the coordinated transmission, the terminal descrambles the downlink transmission data based on this identifier, or scrambles the uplink transmission data based on this identifier. The timing synchronization relationship of the downlink transmission or uplink transmission is determined according to the timing synchronization relationship between the network node and the terminal associated with the physical resources allocated for the coordinated transmission. The specific network node is 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.

[0670] Example 4: The RRC signaling pre-configures the coordinated transmission resource, and the PDCCH command activates the coordinated transmission resource. The coordinated transmission resource becomes effective once or a specified number of times.

[0671] Base station side process:

[0672] Step 1: The base station side sends RRC signaling to the terminal for pre-configuring the coordinated transmission resource.

[0673] (1) The base station side node that sends this RRC signaling is any one of the following:

[0674] a) A specific cell: such as the primary cell in CA, or the primary cell of the primary base station in DC, or the primary cell of the secondary base station in DC, or the primary cell in a TAG;

[0675] b) Any cell or TRP to which the terminal is currently connected, or the DU / DDU to which the TRP is connected.

[0676] c) The source cell or source TRP that performs coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0677] (2) The RRC signaling includes one or more of the following information:

[0678] a) The period of the coordinated transmission resource (optional);

[0679] b) The number N of preconfigured resources within each coordinated transmission resource period (optional);

[0680] c) The number of effective times K of the coordinated transmission resource (optional);

[0681] d) The reference cell or reference TRP (optional);

[0682] e) The preconfigured resource type indication, indicating that the currently configured preconfigured resource is for coordinated transmission (optional);

[0683] f) The cell or TRP participating in coordinated transmission (optional);

[0684] g) The identifier used to scramble the coordinated transmission resource, such as x-RNTI, the network side high-layer identifier (optional).

[0685] Step 2: The base station side sends a PDCCH command to the terminal to activate the preconfigured coordinated transmission resource.

[0686] (1) The base station side node that sends the PDCCH command is any one of the following:

[0687] a) A specific cell: such as the primary cell in CA, or the primary cell of the primary base station in DC, or the primary cell of the secondary base station in DC, or the primary cell in a TAG;

[0688] b) Any cell or TRP to which the terminal is currently connected, or the DU / DDU connected to the TRP.

[0689] c) The source cell or source TRP that performs coordinated transmission with the terminal, or the DU / DDU connected to the source TRP.

[0690] (2) The PDCCH command for activating the preconfigured coordinated transmission resource includes one or more of the following information:

[0691] a) The absolute effective time of the coordinated transmission resource (optional), mutually exclusive with b);

[0692] b) The time deviation deltaT of the effective time of the coordinated transmission resource relative to the sending time of the PDCCH command (optional), mutually exclusive with a);

[0693] c) The number of preconfigured resources N within each coordinated transmission resource period (optional). If the RRC signaling in step 1 has been configured, this parameter may not be configured.

[0694] d) The number of times K that the coordinated transmission resource becomes effective (optional). If the RRC signaling in step 1 has been configured, this parameter may not be configured.

[0695] e) The physical layer resource allocation of the coordinated transmission resource, including time-frequency resource allocation, and / or transmission mode (MCS, RV), etc. (mandatory).

[0696] f) The reference cell or reference TRP (optional). If the RRC signaling in step 1 has been configured, this parameter may not be configured.

[0697] g) The cells or TRPs participating in the coordinated transmission (optional). If the RRC signaling in step 1 has been configured, this parameter may not be configured.

[0698] Step 3: The cells or TRPs on the base station side participating in the coordinated transmission, at each moment when the coordinated transmission resource becomes effective, send downlink transmissions or receive uplink transmissions according to the physical layer resources and transmission formats allocated by the coordinated transmission resource. The timing synchronization relationship of the downlink transmission or uplink transmission is determined according to the timing synchronization relationship between the network node and the terminal associated with the physical layer resources allocated for the coordinated transmission. The specific network node is 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.

[0699] Terminal-side procedure:

[0700] Step 1: Receive the RRC signaling for preconfigured coordinated transmission resources sent by the base station side.

[0701] (1) This RRC signaling is received on any of the following base station side nodes:

[0702] a) The terminal receives this RRC signaling in a specific cell, which is the primary cell under CA, or the primary cell of the primary base station under DC, or the primary cell of the secondary base station under DC, or the primary cell in a TAG.

[0703] b) The terminal receives this RRC signaling in any cell or TRP currently connected, or in the DU / DDU connected to the TRP.

[0704] c) The terminal receives this RRC signaling from the source cell or source TRP that can perform coordinated transmission, or from the DU / DDU connected to the source TRP.

[0705] (2) This RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:

[0706] a) Period of the coordinated transmission resources (optional). If the preconfigured coordinated transmission resources are effective only once, this parameter is not configured.

[0707] b) Number N of preconfigured resources within each period of the coordinated transmission resources (optional). After the coordinated transmission resources are activated by a PDCCH command, the terminal determines that there are N consecutive preconfigured resources within each period of the coordinated transmission resources starting from the start time of each coordinated transmission resource.

[0708] c) Number of times K that the coordinated transmission resources are effective (optional), configured simultaneously with a).

[0709] d) Reference cell or reference TRP (optional).

[0710] e) Indication of the preconfigured resource type, indicating that the currently configured preconfigured resources are resources for coordinated transmission (optional).

[0711] f) Cells or TRPs participating in the coordinated transmission (optional).

[0712] g) Identifier for scrambling the coordinated transmission, such as x-RNTI, network-side high-layer identifier (optional).

[0713] Step 2: Receive the PDCCH command sent by the base station side to the terminal to activate the preconfigured coordinated transmission resources.

[0714] (1) The base station side node sending the PDCCH command is any one of the following:

[0715] a) The terminal receives the PDCCH command in a specific cell, and the specific cell is the primary cell under CA, or the primary cell of the primary base station under DC, or the primary cell of the secondary base station under DC, or the primary cell in a TAG.

[0716] b) The terminal receives the PDCCH command in any cell or TRP to which it is currently connected, or in the DU / DDU connected to the TRP.

[0717] c) The terminal receives the PDCCH command from the source cell or source TRP that can perform coordinated transmission, or from the DU / DDU connected to the source TRP.

[0718] (2) The PDCCH command for activating the preconfigured coordinated transmission resources includes one or more of the following information, and the corresponding operations of the terminal include:

[0719] a) Absolute effective time of the coordinated transmission resources (optional, mutually exclusive with b). The terminal determines the actual effective time of the coordinated transmission resources based on this parameter.

[0720] b) The time deviation deltaT of the effective moment of the coordinated transmission resource relative to the transmission moment of the PDCCH command (optional, mutually exclusive with a)), and the terminal determines the actual effective time of the coordinated transmission resource based on this parameter;

[0721] c) The number N of preconfigured resources within each coordinated transmission resource period (optional). If the RRC signaling in step 1 has been configured, this parameter may not be configured. The terminal determines that there are N consecutive preconfigured resources within each coordinated transmission resource period based on the number of preconfigured resources indicated in the RRC signaling or the PDCCH command;

[0722] d) The number of effective times K of the coordinated transmission resource (optional). If the RRC signaling in step 1 has been configured, this parameter may not be configured. Based on the coordinated transmission resource period configured by the RRC signaling, and the number of effective times K of the coordinated transmission resource indicated in the RRC signaling or the PDCCH command, it is determined that the coordinated transmission resource is effective within K periods and the period value.

[0723] e) The physical layer resource configuration of the coordinated transmission resource, including time-frequency resource configuration, and / or transmission mode (MCS, RV), etc. (mandatory). The terminal determines the actual physical layer resource allocation of each preconfigured resource within each coordinated transmission resource period, including the time-frequency resource location, transmission format MCS, RV, etc.;

[0724] f) The reference cell or reference TRP (optional). If the RRC signaling in step 1 has been configured, this parameter may not be configured. The terminal combines e) and f) to determine the actual physical layer resource allocation of the coordinated transmission resource. This 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 the RRC signaling or the PDCCH command, the terminal determines the actual physical layer resource allocation of the coordinated transmission resource based on the uplink and downlink resource configuration of the reference cell or reference TRP indicated by the RRC signaling or the PDCCH command. If the reference cell or reference TRP is not configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resource based on the uplink and downlink resource configuration of the cell or TRP that sends the PDCCH command;

[0725] g) The cells or TRPs participating in the coordinated transmission (optional). If the RRC signaling in step 1 has been configured, this parameter may not be configured. If there is this parameter, the terminal determines the cells or TRPs participating in the coordinated transmission based on the cells or TRPs participating in the coordinated transmission indicated by the RRC signaling or the PDCCH command.

[0726] Step 3. After the coordinated transmission resources are activated, on each coordinated transmission resource, according to the physical layer resources and transmission format allocated for the coordinated transmission resources, if the RRC signaling indicates an identifier for scrambling the coordinated transmission, the terminal descrambles the downlink transmission data based on this identifier, or scrambles the uplink transmission data based on this identifier. The timing synchronization relationship of the downlink transmission or uplink transmission is determined according to the timing synchronization relationship between the network node and the terminal associated with the physical resources allocated for the coordinated transmission. The specific network node is 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.

[0727] Note: In Examples 1 to 4, different cells or TRPs participating in the coordinated transmission need to notify each other of the preconfigured coordinated transmission resources and / or activation information of the coordinated transmission resources. The specific notification method is any one of the following:

[0728] a) If the cells / TRPs participating in the coordinated transmission belong to different DUs / DDUs, the preconfigured information and / or activation information of the coordinated transmission resources are interacted through the interface between the DUs / DDUs.

[0729] b) If the cells / TRPs participating in the coordinated transmission belong to different DUs / DDUs, the CU / CCU interacts the preconfigured information and / or activation information of the coordinated transmission resources through the interface between the CU / CCU and the DUs / DDUs (similar to the F1 interface in 5G).

[0730] c) If the cells / TRPs participating in the coordinated transmission belong to different base stations, the preconfigured information and / or activation information of the coordinated transmission resources are interacted through the interface between the base stations (similar to the Xn interface in 5G).

[0731] The methods and apparatuses provided in the embodiments of the present application are based on the same application concept. Since the principles of the methods and apparatuses for solving problems are similar, the implementation of the apparatuses and methods can be referred to each other, and the repeated parts will not be elaborated.

[0732] Figure 4 The following is a schematic structural diagram of the terminal provided in the embodiment of the present application. As Figure 4 shown, the terminal includes a memory 420, a transceiver 410, and a processor 400. Among them, the processor 400 and the memory 420 can also be physically separated.

[0733] 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.

[0734] Specifically, the transceiver 410 is used to receive and send data under the control of the processor 400.

[0735] Among them, in Figure 4 , the bus architecture may include any number of interconnected buses and bridges, and various circuits represented by one or more processors represented by the processor 400 and the memory represented by the memory 420 are specifically linked together. The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art. Therefore, the present application will not further describe them. The bus interface provides an interface. The transceiver 410 may be multiple elements, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium, and these transmission mediums include wireless channels, wired channels, optical fiber cables, and other transmission mediums. For different user devices, the user interface 430 may also be an interface capable of externally connecting and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

[0736] 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 executing operations.

[0737] 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), and the processor may also adopt a multi-core architecture.

[0738] The processor 400 is used to execute any of the methods provided by the embodiments of the present application by calling a computer program stored in the memory 420 according to the obtained executable instructions. For example: receiving Radio Resource Control (RRC) signaling sent by a first network node, where the RRC signaling is used to pre-configure co-transmission resources; and performing data reception or transmission based on the co-transmission resources.

[0739] In some embodiments, the RRC signaling includes one or more of the following information:

[0740] The effective time information of the co-transmission resources;

[0741] The period of the co-transmission resources;

[0742] The number of co-transmission resources within each co-transmission resource period;

[0743] The effective number of times of the co-transmission resources;

[0744] Physical layer resource configuration information for coordinated transmission resources;

[0745] Reference network node indication;

[0746] Preconfigured resource type indication;

[0747] Network node information participating in coordinated transmission;

[0748] Identifier for scrambling coordinated transmission.

[0749] In some embodiments, the first network node includes any one of the following:

[0750] Primary cell under carrier aggregation CA;

[0751] Primary cell of the primary base station under dual connectivity DC;

[0752] Primary cell of the secondary base station under DC;

[0753] Primary cell in a timing advance group TAG;

[0754] Any cell or any transmission and reception point TRP to which the terminal is currently connected;

[0755] Distributed data unit connected to any TRP to which the terminal is currently connected;

[0756] Source cell or source TRP for coordinated transmission;

[0757] Distributed data unit connected to the source TRP for coordinated transmission.

[0758] In some embodiments, the method further includes:

[0759] Receiving a physical downlink control channel PDCCH command sent by a second network node, the PDCCH command being used to activate coordinated transmission resources.

[0760] In some embodiments, the PDCCH command includes one or more of the following information:

[0761] Effective time information of coordinated transmission resources;

[0762] Number of coordinated transmission resources within each coordinated transmission resource period;

[0763] Number of effective times of coordinated transmission resources;

[0764] Physical layer resource allocation information of coordinated transmission resources;

[0765] Reference network node indication;

[0766] Network node information participating in coordinated transmission.

[0767] In some embodiments, the second network node includes any one of the following:

[0768] The primary cell under CA;

[0769] The primary cell of the primary base station under DC;

[0770] The primary cell of the secondary base station under DC;

[0771] The primary cell in the TAG;

[0772] Any cell or any TRP to which the terminal is currently connected;

[0773] The distributed data unit connected to any TRP to which the terminal is currently connected;

[0774] The source cell or source TRP performing coordinated transmission;

[0775] The distributed data unit connected to the source TRP performing coordinated transmission.

[0776] In some embodiments, the method further includes:

[0777] Determining any one of the following moments as the effective moment of the coordinated transmission resource:

[0778] The transmission moment or reception moment of the RRC signaling; or,

[0779] The moment indicated by the effective time information of the coordinated transmission resource in the RRC signaling; or,

[0780] The transmission moment or reception moment of the PDCCH command for activating the coordinated transmission resource; or,

[0781] The moment indicated by the effective time information of the coordinated transmission resource in the PDCCH command for activating the coordinated transmission resource.

[0782] In some embodiments, the method further includes:

[0783] Determining the coordinated transmission resource based on the resource configuration of the third network node;

[0784] Wherein, when the coordinated transmission resource allocates 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,

[0785] When the coordinated transmission resource allocates physical layer resources by the PDCCH command for activating the coordinated transmission resource, 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.

[0786] In some embodiments, the method further includes:

[0787] Determining a third network node as a timing synchronization reference network node.

[0788] In some embodiments, the effective time information of the coordinated transmission resource includes:

[0789] The absolute effective moment of the coordinated transmission resource; or,

[0790] The time deviation of the absolute effective moment of the coordinated transmission resource relative to the transmission moment of the effective time information.

[0791] In some embodiments, the coordinated transmission resource is a periodically effective resource, or a resource that is effective once, or a resource that is effective a specified number of times.

[0792] Figure 5 The structural schematic diagram of the first network node provided by the embodiments of the present application is as Figure 5 shown. 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 separated.

[0793] The memory 520 is used to store computer programs; the transceiver 510 is used to transmit and receive data under the control of the processor 500.

[0794] Specifically, the transceiver 510 is used to receive and transmit data under the control of the processor 500.

[0795] Among them, in Figure 5 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits represented by one or more processors represented by the processor 500 and the memory represented by the memory 520 are linked together. The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art. Therefore, the present application will not further describe them. The bus interface provides an interface. The transceiver 510 may be multiple elements, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium, and these transmission mediums include wireless channels, wired channels, optical fiber cables, etc.

[0796] The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store the data used by the processor 500 when performing operations.

[0797] The processor 500 may be a CPU, an ASIC, an FPGA, or a CPLD, and the processor may also adopt a multi-core architecture.

[0798] The processor 500 is used to execute any of the methods provided in the embodiments of the present application by calling a computer program stored in the memory 520, for example: sending radio resource control (RRC) signaling to a terminal, where the RRC signaling is used to pre-configure co-transmission resources.

[0799] In some embodiments, the RRC signaling includes one or more of the following information:

[0800] The effective time information of the co-transmission resources;

[0801] The period of the co-transmission resources;

[0802] The number of co-transmission resources within each co-transmission resource period;

[0803] The effective number of times of the co-transmission resources;

[0804] The physical layer resource configuration information of the co-transmission resources;

[0805] The reference network node indication;

[0806] The pre-configured resource type indication;

[0807] The network node information participating in the co-transmission;

[0808] The identifier used for scrambling the co-transmission.

[0809] In some embodiments, the method further includes:

[0810] Sending a physical downlink control channel (PDCCH) command to the terminal, where the PDCCH command is used to activate the co-transmission resources.

[0811] In some embodiments, the PDCCH command includes one or more of the following information:

[0812] The effective time information of the co-transmission resources;

[0813] The number of co-transmission resources within each co-transmission resource period;

[0814] The effective number of times of the co-transmission resources;

[0815] The physical layer resource allocation information of the co-transmission resources;

[0816] The reference network node indication;

[0817] The network node information participating in the co-transmission.

[0818] In some embodiments, the method further includes:

[0819] Interact with other network nodes participating in coordinated transmission to exchange pre-configuration information of coordinated transmission resources and / or activation information of coordinated transmission resources 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.

[0820] In some embodiments, the method further includes:

[0821] Determine any one of the following moments as the effective moment of the coordinated transmission resources:

[0822] The sending moment or receiving moment of the RRC signaling; or,

[0823] In the RRC signaling, the moment indicated by the effective time information of the coordinated transmission resources; or,

[0824] The sending moment or receiving moment of the PDCCH command for activating the coordinated transmission resources; or,

[0825] In the PDCCH command for activating the coordinated transmission resources, the moment indicated by the effective time information of the coordinated transmission resources.

[0826] In some embodiments, the method further includes:

[0827] Determine the coordinated transmission resources based on the resource configuration of the third network node;

[0828] Wherein, 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,

[0829] When the coordinated transmission resources are allocated physical layer resources by the PDCCH command for activating 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.

[0830] In some embodiments, the method further includes:

[0831] Determine the third network node as the timing synchronization reference network node.

[0832] In some embodiments, the effective time information of the coordinated transmission resources includes:

[0833] The absolute effective moment of the coordinated transmission resources; or,

[0834] The time deviation of the absolute effective moment of the coordinated transmission resources relative to the sending moment of the effective time information.

[0835] In some embodiments, the coordinated transmission resource is a resource that becomes effective periodically, or a resource that becomes effective once, or a resource that becomes effective a specified number of times.

[0836] In some embodiments, the first network node includes any one of the following:

[0837] The primary cell under carrier aggregation (CA);

[0838] The primary cell of the primary base station under dual connectivity (DC);

[0839] The primary cell of the secondary base station under DC;

[0840] The primary cell in a timing advance group (TAG);

[0841] Any cell or any transmission and reception point (TRP) to which the terminal is currently connected;

[0842] The distributed data unit connected to any TRP to which the terminal is currently connected;

[0843] The source cell or source TRP for coordinated transmission;

[0844] The distributed data unit connected to the source TRP for coordinated transmission.

[0845] It should be noted here that the above terminal and the first network node provided in the embodiments of the present application can implement all the method steps implemented in the above method embodiments, and can achieve the same technical effects. Therefore, the same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0846] Figure 6 The following is a schematic structural diagram of a data transmission device provided in an embodiment of the present application. As Figure 6 shown, the device includes:

[0847] A receiving unit 600, configured to receive radio resource control (RRC) signaling sent by a first network node, where the RRC signaling is used to pre-configure a coordinated transmission resource;

[0848] A transmitting unit 610, configured to receive or send data based on the coordinated transmission resource.

[0849] In some embodiments, the RRC signaling includes one or more of the following information:

[0850] The effective time information of the coordinated transmission resource;

[0851] The period of the coordinated transmission resource;

[0852] The number of coordinated transmission resources within each coordinated transmission resource period;

[0853] The number of times the coordinated transmission resource becomes effective;

[0854] Physical layer resource configuration information of the coordinated transmission resource;

[0855] Reference network node indication;

[0856] Preconfigured resource type indication;

[0857] Network node information participating in the coordinated transmission;

[0858] Identifier for scrambling the coordinated transmission.

[0859] In some embodiments, the first network node includes any one of the following:

[0860] The primary cell under carrier aggregation (CA);

[0861] The primary cell of the primary base station under dual connectivity (DC);

[0862] The primary cell of the secondary base station under DC;

[0863] The primary cell in a timing advance group (TAG);

[0864] Any cell or any transmission and reception point (TRP) to which the terminal is currently connected;

[0865] The distributed data unit connected to any TRP to which the terminal is currently connected;

[0866] The source cell or source TRP for performing the coordinated transmission;

[0867] The distributed data unit connected to the source TRP for performing the coordinated transmission.

[0868] In some embodiments, the receiving unit 600 is further configured to:

[0869] Receive a physical downlink control channel (PDCCH) command sent by the second network node, where the PDCCH command is used to activate the coordinated transmission resource.

[0870] In some embodiments, the PDCCH command includes one or more of the following information:

[0871] The effective time information of the coordinated transmission resource;

[0872] The number of coordinated transmission resources within each coordinated transmission resource period;

[0873] The effective times of the coordinated transmission resource;

[0874] The physical layer resource allocation information of the coordinated transmission resource;

[0875] Reference network node indication;

[0876] Network node information participating in coordinated transmission.

[0877] In some embodiments, the second network node includes any one of the following:

[0878] The primary cell under CA;

[0879] The primary cell of the primary base station under DC;

[0880] The primary cell of the secondary base station under DC;

[0881] The primary cell in the TAG;

[0882] Any cell or any TRP to which the terminal is currently connected;

[0883] The distributed data unit connected to any TRP to which the terminal is currently connected;

[0884] The source cell or source TRP for coordinated transmission;

[0885] The distributed data unit connected to the source TRP for coordinated transmission.

[0886] In some embodiments, the apparatus further includes:

[0887] A first determination unit, configured to determine any one of the following times as the effective time of the coordinated transmission resource:

[0888] The transmission time or reception time of the RRC signaling; or,

[0889] In the RRC signaling, the time indicated by the effective time information of the coordinated transmission resource; or,

[0890] The transmission time or reception time of the PDCCH command for activating the coordinated transmission resource; or,

[0891] In the PDCCH command for activating the coordinated transmission resource, the time indicated by the effective time information of the coordinated transmission resource.

[0892] In some embodiments, the apparatus further includes:

[0893] A second determination unit, configured to determine the coordinated transmission resource based on the resource configuration of the third network node;

[0894] Wherein, when the coordinated transmission resource allocates 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,

[0895] In the case where the coordinated transmission resources allocate physical layer resources by means of a PDCCH command for activating 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.

[0896] In some embodiments, the apparatus further includes:

[0897] A third determination unit, configured to determine the third network node as a timing synchronization reference network node.

[0898] In some embodiments, the effective time information of the coordinated transmission resources includes:

[0899] The absolute effective moment of the coordinated transmission resources; or,

[0900] The time deviation of the absolute effective moment of the coordinated transmission resources relative to the transmission moment of the effective time information.

[0901] In some embodiments, the coordinated transmission resources are resources that become effective periodically, or resources that become effective once, or resources that become effective a specified number of times.

[0902] Figure 7 The structural schematic diagram of the coordinated transmission resource allocation apparatus provided by the embodiments of the present application is shown as Figure 7 shown, and the apparatus includes:

[0903] A sending unit 700, configured to send radio resource control (RRC) signaling to a terminal, where the RRC signaling is used to pre-configure coordinated transmission resources.

[0904] In some embodiments, the RRC signaling includes one or more of the following information:

[0905] The effective time information of the coordinated transmission resources;

[0906] The period of the coordinated transmission resources;

[0907] The number of coordinated transmission resources in each coordinated transmission resource period;

[0908] The number of times the coordinated transmission resources become effective;

[0909] The physical layer resource configuration information of the coordinated transmission resources;

[0910] The reference network node indication;

[0911] The pre-configured resource type indication;

[0912] The network node information participating in the coordinated transmission;

[0913] The identifier used for scrambling the coordinated transmission.

[0914] In some embodiments, the sending unit 700 is further configured to:

[0915] Send a Physical Downlink Control Channel (PDCCH) command to the terminal, where the PDCCH command is used to activate the coordinated transmission resource.

[0916] In some embodiments, the PDCCH command includes one or more of the following information:

[0917] The effective time information of the coordinated transmission resource;

[0918] The number of coordinated transmission resources within each coordinated transmission resource period;

[0919] The effective number of times of the coordinated transmission resource;

[0920] The physical layer resource allocation information of the coordinated transmission resource;

[0921] The reference network node indication;

[0922] The information of the network nodes participating in the coordinated transmission.

[0923] In some embodiments, the apparatus further includes:

[0924] An interaction unit, configured to interact with other network nodes participating in the coordinated transmission to exchange the pre-configuration information of the coordinated transmission resource and / or the activation information of the coordinated transmission resource 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.

[0925] In some embodiments, the apparatus further includes:

[0926] A fourth determination unit, configured to determine any one of the following moments as the effective moment of the coordinated transmission resource:

[0927] The sending moment or receiving moment of the Radio Resource Control (RRC) signaling; or,

[0928] In the RRC signaling, the moment indicated by the effective time information of the coordinated transmission resource; or,

[0929] The sending moment or receiving moment of the PDCCH command used to activate the coordinated transmission resource; or,

[0930] In the PDCCH command used to activate the coordinated transmission resource, the moment indicated by the effective time information of the coordinated transmission resource.

[0931] In some embodiments, the apparatus further includes:

[0932] A fifth determination unit, configured to determine the coordinated transmission resource based on the resource configuration of the third network node;

[0933] Wherein, when the coordinated transmission resource allocates physical layer resources by means of RRC signaling, the third network node is the first network node or the reference network node indicated in the RRC signaling; or,

[0934] when the coordinated transmission resource allocates physical layer resources by means of a PDCCH command for activating the coordinated transmission resource, 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.

[0935] In some embodiments, the apparatus further includes:

[0936] a sixth determination unit, configured to determine the third network node as a timing synchronization reference network node.

[0937] In some embodiments, the effective time information of the coordinated transmission resource includes:

[0938] the absolute effective moment of the coordinated transmission resource; or,

[0939] the time deviation of the absolute effective moment of the coordinated transmission resource relative to the sending moment of the effective time information.

[0940] In some embodiments, the coordinated transmission resource is a periodically effective resource, or a resource that is effective once, or a resource that is effective a specified number of times.

[0941] In some embodiments, the first network node includes any one of the following:

[0942] the primary cell under carrier aggregation (CA);

[0943] the primary cell of the primary base station under dual connectivity (DC);

[0944] the primary cell of the secondary base station under DC;

[0945] the primary cell in a timing advance group (TAG);

[0946] any cell or any transmission and reception point (TRP) to which the terminal is currently connected;

[0947] the distributed data unit connected to any TRP to which the terminal is currently connected;

[0948] the source cell or source TRP for coordinated transmission;

[0949] the distributed data unit connected to the source TRP for coordinated transmission.

[0950] It should be noted that the division of units in the embodiments of the present application is illustrative, merely a logical function division, and there may be other division methods in actual implementation. Additionally, in each embodiment of the present application, the various functional units may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware or in the form of software functional units.

[0951] If the above-mentioned 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 such an understanding, the technical solution of the present application, in essence, 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. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0952] It should be noted here that the above-mentioned device provided in the embodiments of the present application can implement all the method steps implemented in the above-mentioned method embodiments and can achieve the same technical effects. Therefore, the same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0953] On the other hand, the embodiments of the present application also provide a non-transitory readable storage medium storing a computer program for causing a processor to execute the methods provided in the above-mentioned various embodiments.

[0954] It should be noted here that the non-transitory readable storage medium provided in the embodiments of the present application can implement all the method steps implemented in the above-mentioned method embodiments and can achieve the same technical effects. Therefore, the same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0955] The non-transitory readable storage medium may be any available medium or data storage device accessible by a computer, including but not limited to magnetic memories (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical memories (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor memories (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NANDFLASH), solid state drives (SSD)), etc.

[0956] The technical solutions provided by the embodiments of this application can be applied to a variety of systems, especially 5G systems. For example, the 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 system (UMTS), worldwide interoperability for microwave access (WiMAX) systems, 5G New Radio (NR) systems, etc. Both terminal devices and network devices are included in these various systems. The core network part may also be included in the system, such as the Evloved Packet System (EPS), 5G System (5GS), etc.

[0957] The terminal involved in the embodiments of the present application can be a device that provides voice and / or data connectivity to users, such as a handheld device with wireless connection capabilities, or other processing devices connected to a wireless modem, etc. In different systems, the name of the terminal may also be different. For example, in a 5G system, the terminal can be called a User Equipment (UE). The wireless terminal device can communicate with one or more core networks (CN) via a Radio Access Network (RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it can be a portable, pocket-sized, handheld, computer-integrated, or vehicle-mounted mobile device that exchanges voice and / or data with the wireless access network. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistant (PDA). The wireless terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, a user device, which is not limited in the embodiments of the present application.

[0958] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.

[0959] This application is described with reference to the flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices produce a means for implementing the functions specified in one flow Figure 1 or more flows and / or blocks Figure 1 or a means for implementing the functions specified in one block or more blocks.

[0960] These processor-executable instructions can also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the processor-readable memory produce a manufacture including an instruction means that implements the functions specified in one flow Figure 1 or more flows and / or blocks Figure 1 or a means for implementing the functions specified in one block or more blocks.

[0961] These processor-executable instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one flow Figure 1 or more flows and / or blocks Figure 1 or a means for implementing the functions specified in one block or more blocks.

[0962] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these changes and modifications.

Claims

1. A data transmission method, characterized in that, applied to a terminal, comprising: receiving radio resource control (RRC) signaling sent by a first network node, where the RRC signaling is used to pre-configure co-transmission resources; based on the co-transmission resources, performing data reception or transmission.

2. The data transmission method according to claim 1, characterized in that, the RRC signaling includes one or more of the following information: the effective time information of the co-transmission resources; the period of the co-transmission resources; the number of co-transmission resources within each co-transmission resource period; the effective times of the co-transmission resources; the physical layer resource configuration information of the co-transmission resources; reference network node indication; pre-configured resource type indication; network node information participating in co-transmission; an identifier for scrambling co-transmission.

3. The data transmission method according to claim 1 or 2, characterized in that, the first network node includes any one of the following: the primary cell under carrier aggregation (CA); the primary cell of the primary base station under dual connectivity (DC); the primary cell of the secondary base station under DC; the primary cell in a timing advance group (TAG); any cell or any transmission reception point (TRP) to which the terminal is currently connected; the distributed data unit connected to any TRP to which the terminal is currently connected; the source cell or source TRP for co-transmission; the distributed data unit connected to the source TRP for co-transmission.

4. The data transmission method according to claim 1, characterized in that, the method further includes: receiving a physical downlink control channel (PDCCH) command sent by a second network node, where the PDCCH command is used to activate the co-transmission resources.

5. The data transmission method according to claim 4, characterized in that, the PDCCH command includes one or more of the following information: the effective time information of the co-transmission resources; the number of co-transmission resources within each co-transmission resource period; the effective times of the co-transmission resources; the physical layer resource allocation information of the co-transmission resources; reference network node indication; network node information participating in co-transmission.

6. The data transmission method according to claim 4 or 5, characterized in that, 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 a TAG; any cell or any TRP to which the terminal is currently connected; the distributed data unit connected to any TRP to which the terminal is currently connected; the source cell or source TRP for co-transmission; the distributed data unit connected to the source TRP for co-transmission.

7. The data transmission method according to claim 1, 2, 4 or 5, characterized in that, the method further includes: determining any one of the following times as the effective time of the co-transmission resources: the sending time or receiving time of the RRC signaling; or, in the RRC signaling, the time indicated by the effective time information of the co-transmission resources; or, the sending time or receiving time of the PDCCH command used to activate the co-transmission resources; or, In the PDCCH command for activating the coordinated transmission resource, the moment indicated by the activation time information of 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 the resource configuration of a third network node; wherein, when the physical layer resources of the coordinated transmission resource are allocated 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 physical layer resources of the coordinated transmission resource are allocated by the PDCCH command for activating the coordinated transmission resource, 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: determining the third network node as the timing synchronization reference network node.

10. The data transmission method according to claim 2 or 5, wherein, the activation time information of the coordinated transmission resource includes: the absolute activation moment of the coordinated transmission resource; or, the time deviation of the absolute activation moment of the coordinated transmission resource relative to the transmission moment of the activation time information.

11. The data transmission method according to claim 1, 2, 4 or 5, wherein, the coordinated transmission resource is a periodically activated resource, or a resource activated once, or a resource activated a specified number of times.

12. A coordinated transmission resource allocation method, wherein, applied to a first network node, comprising: sending a radio resource control (RRC) signaling to a terminal, the RRC signaling being used to pre-configure a coordinated transmission resource.

13. The coordinated transmission resource allocation method according to claim 12, wherein, the RRC signaling includes one or more of the following information: the activation time information of the coordinated transmission resource; the period of the coordinated transmission resource; the number of coordinated transmission resources within each coordinated transmission resource period; the activation times of the coordinated transmission resource; the physical layer resource configuration information of the coordinated transmission resource; reference network node indication; pre-configured resource type indication; information of network nodes participating in coordinated transmission; an identifier for scrambling coordinated transmission.

14. The coordinated transmission resource allocation method according to claim 12, wherein, the method further comprises: sending a physical downlink control channel (PDCCH) command to the terminal, the PDCCH command being used to activate the coordinated transmission resource.

15. The coordinated transmission resource allocation method according to claim 14, wherein, the PDCCH command includes one or more of the following information: the activation time information of the coordinated transmission resource; the number of coordinated transmission resources within each coordinated transmission resource period; the activation times of the coordinated transmission resource; the physical layer resource allocation information of the coordinated transmission resource; reference network node indication; Network node information participating in coordinated transmission.

16. The coordinated transmission resource allocation method according to any one of claims 12 to 15, characterized in that, the method further includes: interacting with other network nodes participating in coordinated transmission to exchange pre-configuration information of the coordinated transmission resources and / or activation information of the coordinated transmission resources through an interface between distributed data units, an interface between a central control plane node and a distributed data unit, or an interface between base stations.

17. The coordinated transmission resource allocation method according to any one of claims 12 to 15, characterized in that, the method further includes: determining any one of the following moments as the effective moment of the coordinated transmission resources: the sending moment or receiving moment of the RRC signaling; or, the moment indicated by the effective time information of the coordinated transmission resources in the RRC signaling; or, the sending moment or receiving moment of the PDCCH command for activating the coordinated transmission resources; or, the moment indicated by the effective time information of the coordinated transmission resources in the PDCCH command for activating the coordinated transmission resources.

18. The coordinated transmission resource allocation method according to any one of claims 12 to 15, characterized in that, the method further includes: determining the coordinated transmission resources based on the resource configuration of a third network node; wherein, when the coordinated transmission resources allocate 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 allocate physical layer resources by the PDCCH command for activating the coordinated transmission resources, the third network node is the network node sending 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 coordinated transmission resource allocation method according to claim 18, characterized in that, the method further includes: determining the third network node as a timing synchronization reference network node.

20. The coordinated transmission resource allocation method according to claim 13 or 15, characterized in that, the effective time information of the coordinated transmission resources includes: the absolute effective moment of the coordinated transmission resources; or, the time deviation of the absolute effective moment of the coordinated transmission resources relative to the sending moment of the effective time information.

21. The coordinated transmission resource allocation method according to any one of claims 12 to 15, characterized in that, the coordinated transmission resources are resources that become effective periodically, or resources that become effective once, or resources that become effective a specified number of times.

22. The coordinated transmission resource allocation method according to any one of claims 12 to 15, characterized in that, the first network node includes any one of the following: the primary cell under carrier aggregation CA; the primary cell of the primary base station under dual connectivity DC; the primary cell of the secondary base station under DC; the primary cell in a timing advance group TAG; any cell or any transmission and reception point TRP to which the terminal is currently connected; The distributed data unit connected to any Transmission and Reception Point (TRP) to which the terminal is currently connected; The source cell or source TRP for coordinated transmission; The distributed data unit connected to the source TRP for coordinated transmission.

23. A terminal, characterized in that, it includes a memory, a transceiver, and a processor; The memory is used to store computer programs; the transceiver is used to transmit and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations: Receive Radio Resource Control (RRC) signaling sent by a first network node, where the RRC signaling is used to pre-configure coordinated transmission resources; Based on the coordinated transmission resources, perform data reception or transmission.

24. The terminal according to claim 23, characterized in that, The RRC signaling includes one or more of the following information: The effective time information of the coordinated transmission resources; The period of the coordinated transmission resources; The number of coordinated transmission resources within each coordinated transmission resource period; The effective number of times of the coordinated transmission resources; The physical layer resource configuration information of the coordinated transmission resources; Reference network node indication; Pre-configured resource type indication; Network node information participating in coordinated transmission; An identifier used to scramble coordinated transmission.

25. The terminal according to claim 23 or 24, characterized in that, The first network node includes any one of the following: The primary cell under Carrier Aggregation (CA); The primary cell of the primary base station under Dual Connectivity (DC); The primary cell of the secondary base station under DC; The primary cell in a Timing Advance Group (TAG); Any cell or any Transmission and Reception Point (TRP) to which the terminal is currently connected; The distributed data unit connected to any TRP to which the terminal is currently connected; The source cell or source TRP for coordinated transmission; The distributed data unit connected to the source TRP for coordinated transmission.

26. The terminal according to claim 23, characterized in that, The operation further includes: Receive a Physical Downlink Control Channel (PDCCH) command sent by a second network node, where the PDCCH command is used to activate the coordinated transmission resources.

27. The terminal according to claim 26, characterized in that, The PDCCH command includes one or more of the following information: The effective time information of the coordinated transmission resources; The number of coordinated transmission resources within each coordinated transmission resource period; The effective number of times of the coordinated transmission resources; The physical layer resource allocation information of the coordinated transmission resources; Reference network node indication; Network node information participating in coordinated transmission.

28. The terminal according to claim 26 or 27, characterized in that, 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 a TAG; Any cell or any TRP to which the terminal is currently connected; The distributed data unit connected to any TRP to which the terminal is currently connected; The source cell or source TRP for coordinated transmission; The distributed data unit connected to the source TRP for coordinated transmission.

29. The terminal according to claim 23, 24, 26 or 27, characterized in that, The operation further includes: Determining any one of the following moments as the effective moment of the coordinated transmission resource: The transmission moment or reception moment of the RRC signaling; or, In the RRC signaling, the moment indicated by the effective time information of the coordinated transmission resource; or, The transmission moment or reception moment of the PDCCH command for activating the coordinated transmission resource; or, In the PDCCH command for activating the coordinated transmission resource, the moment indicated by the effective time information of the coordinated transmission resource.

30. The terminal according to claim 23, 24, 26 or 27, wherein, The operation further includes: Determining the coordinated transmission resource based on the resource configuration of a third network node; wherein, when the coordinated transmission resource allocates 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 resource allocates physical layer resources by the PDCCH command for activating the coordinated transmission resource, 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 operation further includes: Determining the third network node as a timing synchronization reference network node.

32. A first network node, wherein, It includes a memory, a transceiver, and a processor; The memory is used for storing computer programs; the transceiver is used for transceiving data under the control of the processor; the processor is used for reading the computer programs in the memory and performing the following operations: Sending radio resource control (RRC) signaling to a terminal, where the RRC signaling is used for pre-configuring a coordinated transmission resource.

33. The first network node according to claim 32, 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 coordinated transmission resource; The number of coordinated transmission resources within each coordinated transmission resource period; The effective number of times of the coordinated transmission resource; The physical layer resource configuration information of the coordinated transmission resource; Reference network node indication; Pre-configured resource type indication; Network node information participating in coordinated transmission; An identifier for scrambling coordinated transmission.

34. The first network node according to claim 32, wherein, The operation further includes: Sending a physical downlink control channel (PDCCH) command to the terminal, where the PDCCH command is used for activating the coordinated transmission resource.

35. The first network node according to claim 34, wherein, The PDCCH command includes one or more of the following information: The effective time information of the coordinated transmission resource; The number of coordinated transmission resources within each coordinated transmission resource period; The effective number of times of the coordinated transmission resource; The physical layer resource allocation information of the coordinated transmission resource; Reference network node indication; Network node information participating in coordinated transmission.

36. The first network node according to any one of claims 32 to 35, wherein, the operation further includes: interacting with other network nodes participating in coordinated transmission to exchange pre-configuration information of the coordinated transmission resource and / or activation information of the coordinated transmission resource through an interface between distributed data units, an interface between a central control plane node and a distributed data unit, or an interface between base stations.

37. The first network node according to any one of claims 32 to 35, wherein, the operation further includes: determining any one of the following moments as the effective moment of the coordinated transmission resource: the sending moment or receiving moment of the RRC signaling; or, the moment indicated by the effective time information of the coordinated transmission resource in the RRC signaling; or, the sending moment or receiving moment of the PDCCH command for activating the coordinated transmission resource; or, the moment indicated by the effective time information of the coordinated transmission resource in the PDCCH command for activating the coordinated transmission resource.

38. The first network node according to any one of claims 32 to 35, wherein, the operation further includes: determining the coordinated transmission resource based on the resource configuration of a third network node; wherein, when the coordinated transmission resource allocates physical layer resources by the RRC signaling, the third network node is the first network node or a reference network node indicated in the RRC signaling; or, when the coordinated transmission resource allocates physical layer resources by the PDCCH command for activating the coordinated transmission resource, the third network node is the network node sending the PDCCH command, or a reference network node indicated in the RRC signaling, or a reference network node indicated in the PDCCH command.

39. The first network node according to claim 38, wherein, the operation further includes: determining the third network node as a timing synchronization reference network node.

40. A data transmission device, wherein, it includes: a receiving unit, configured to receive a radio resource control (RRC) signaling sent by a first network node, the RRC signaling being used to pre-configure a coordinated transmission resource; a transmission unit, configured to perform data reception or transmission based on the coordinated transmission resource.

41. A coordinated transmission resource allocation device, wherein, it includes: a sending unit, configured to send a radio resource control (RRC) signaling to a terminal, the RRC signaling being used to pre-configure a coordinated transmission resource.

42. A non-transitory readable storage medium, wherein, the non-transitory readable storage medium stores a computer program, and the computer program is used to cause a processor to execute the method according to any one of claims 1 to 11.

43. A non-transitory readable storage medium, wherein, the non-transitory readable storage medium stores a computer program, and the computer program is used to cause a processor to execute the method according to any one of claims 12 to 22.

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