WO2025113308A1 - Procédé et appareil de transmission de données, procédé et appareil d'attribution de ressources de transmission coopérative, et dispositif - Google Patents

Procédé et appareil de transmission de données, procédé et appareil d'attribution de ressources de transmission coopérative, et dispositif Download PDF

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Publication number
WO2025113308A1
WO2025113308A1 PCT/CN2024/133490 CN2024133490W WO2025113308A1 WO 2025113308 A1 WO2025113308 A1 WO 2025113308A1 CN 2024133490 W CN2024133490 W CN 2024133490W WO 2025113308 A1 WO2025113308 A1 WO 2025113308A1
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WIPO (PCT)
Prior art keywords
resource
network node
transmission
coordinated transmission
resources
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PCT/CN2024/133490
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English (en)
Chinese (zh)
Inventor
谌丽
孙韶辉
赵瑾波
方亮
刘海涛
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Publication of WO2025113308A1 publication Critical patent/WO2025113308A1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling

Definitions

  • the present disclosure relates to the field of wireless communication technology, and in particular to a data transmission method, a coordinated transmission resource allocation method, a device and an apparatus.
  • the scheduling and transmission of terminals are performed in units of cells, that is, the terminal receives downlink transmissions sent by the base station and sends uplink transmissions to the base station in a cell, and the uplink and downlink resources used, the identifier used to identify the transmission in scheduling and transmission, and the identifier used to identify the terminal in scheduling and transmission all belong to the cell.
  • This scheduling and transmission mechanism will reduce the transmission performance for terminals at the edge of the cell.
  • TRP Transmit/Receive Point
  • the coordinated transmission technology can only be carried out between multiple cells or TRPs that do not require signaling interaction and have no synchronization difference. In actual deployment, it is difficult to achieve coordinated transmission of different cells or TRPs to the same terminal.
  • the present invention provides a data transmission method, a coordinated transmission resource allocation method, equipment and a device to achieve coordinated transmission of different cells or TRPs to the same terminal and improve transmission performance.
  • the present disclosure provides a data transmission method, applied to a terminal, comprising:
  • RRC signaling sent by the first network node, where the RRC signaling is used to pre-configure a coordinated transmission resource
  • Data is received or sent based on cooperative transmission resources.
  • the RRC signaling includes one or more of the following information:
  • An identifier used to scramble cooperative transmissions is an identifier used to scramble cooperative transmissions.
  • the first network node includes any of the following:
  • the primary cell of the primary base station in dual-connection DC is the primary cell of the primary base station in dual-connection DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the method further comprises:
  • a physical downlink control channel PDCCH command sent by the second network node is received, where the PDCCH command is used to activate the coordinated transmission resource.
  • the PDCCH order includes one or more of the following information:
  • the second network node includes any of the following:
  • the primary cell under CA The primary cell under CA;
  • the primary cell of the primary base station under DC is the primary cell of the primary base station under DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the primary cell in TAG is the primary cell in TAG
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the method further comprises:
  • the sending time or receiving time of RRC signaling or
  • the sending time or receiving time of the PDCCH command for activating the coordinated transmission resources or
  • the method further comprises:
  • the third network node when the physical layer resources of the coordinated transmission resources are allocated by RRC signaling, the third network node is the first network node, or is the reference network node indicated in the RRC signaling; or, when the physical layer resources of the coordinated transmission resources are allocated by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or is the reference network node indicated in the RRC signaling, or is the reference network node indicated in the PDCCH command.
  • the method further comprises:
  • the third network node is determined as a timing synchronization reference network node.
  • the effective time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • the cooperative transmission resource is a resource that is valid periodically, or a resource that is valid once, or a resource that is valid a specified number of times.
  • the present disclosure further provides a coordinated transmission resource allocation method, applied to a first network node, including:
  • a radio resource control (RRC) signaling is sent to the terminal, where the RRC signaling is used to pre-configure cooperative transmission resources.
  • RRC radio resource control
  • the RRC signaling includes one or more of the following information:
  • An identifier used to scramble cooperative transmissions is an identifier used to scramble cooperative transmissions.
  • the method further comprises:
  • a physical downlink control channel PDCCH command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resources.
  • the PDCCH order includes one or more of the following information:
  • the method further comprises:
  • Pre-configuration information of cooperative transmission resources and/or activation information of cooperative transmission resources are exchanged with other network nodes participating in cooperative transmission through interfaces between distributed data units, interfaces between central control plane nodes and distributed data units, or interfaces between base stations.
  • the method further comprises:
  • the sending time or receiving time of RRC signaling or
  • the sending time or receiving time of the PDCCH command for activating the coordinated transmission resources or
  • the method further comprises:
  • the third network node when the physical layer resources of the coordinated transmission resources are allocated by RRC signaling, the third network node is the first network node, or is the reference network node indicated in the RRC signaling; or, when the physical layer resources of the coordinated transmission resources are allocated by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or is the reference network node indicated in the RRC signaling, or is the reference network node indicated in the PDCCH command.
  • the method further comprises:
  • the third network node is determined as a timing synchronization reference network node.
  • the effective time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • the cooperative transmission resource is a resource that is valid periodically, or a resource that is valid once, or a resource that is valid a specified number of times.
  • the first network node includes any of the following:
  • the primary cell of the primary base station in dual-connection DC is the primary cell of the primary base station in dual-connection DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the present disclosure further provides a terminal, including a memory, a transceiver, and a processor;
  • a memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:
  • RRC signaling sent by the first network node, where the RRC signaling is used to pre-configure a coordinated transmission resource
  • Data is received or sent based on cooperative transmission resources.
  • the RRC signaling includes one or more of the following information:
  • An identifier used to scramble cooperative transmissions is an identifier used to scramble cooperative transmissions.
  • the first network node includes any of the following:
  • the primary cell of the primary base station in dual-connection DC is the primary cell of the primary base station in dual-connection DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the operations further include:
  • a physical downlink control channel PDCCH command sent by the second network node is received, where the PDCCH command is used to activate the coordinated transmission resource.
  • the PDCCH order includes one or more of the following information:
  • the second network node includes any of the following:
  • the primary cell under CA The primary cell under CA;
  • the primary cell of the primary base station under DC is the primary cell of the primary base station under DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the primary cell in TAG is the primary cell in TAG
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the operations further include:
  • the sending time or receiving time of RRC signaling or
  • the sending time or receiving time of the PDCCH command for activating the coordinated transmission resources or
  • the operations further include:
  • the third network node when the physical layer resources of the coordinated transmission resources are allocated by RRC signaling, the third network node is the first network node, or is the reference network node indicated in the RRC signaling; or, when the physical layer resources of the coordinated transmission resources are allocated by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or is the reference network node indicated in the RRC signaling, or is the reference network node indicated in the PDCCH command.
  • the operations further include:
  • the third network node is determined as a timing synchronization reference network node.
  • the effective time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • the cooperative transmission resource is a resource that is valid periodically, or a resource that is valid once, or a resource that is valid a specified number of times.
  • the present disclosure further provides a first network node, including a memory, a transceiver, and a processor;
  • a memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:
  • a radio resource control (RRC) signaling is sent to the terminal, where the RRC signaling is used to pre-configure cooperative transmission resources.
  • RRC radio resource control
  • the RRC signaling includes one or more of the following information:
  • An identifier used to scramble cooperative transmissions is an identifier used to scramble cooperative transmissions.
  • the operations further include:
  • a physical downlink control channel PDCCH command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resources.
  • the PDCCH order includes one or more of the following information:
  • the operations further include:
  • Pre-configuration information of cooperative transmission resources and/or activation information of cooperative transmission resources are exchanged with other network nodes participating in cooperative transmission through interfaces between distributed data units, interfaces between central control plane nodes and distributed data units, or interfaces between base stations.
  • the operations further include:
  • the sending time or receiving time of RRC signaling or
  • the sending time or receiving time of the PDCCH command for activating the coordinated transmission resources or
  • the operations further include:
  • the third network node when the physical layer resources of the coordinated transmission resources are allocated by RRC signaling, the third network node is the first network node, or is the reference network node indicated in the RRC signaling; or, when the physical layer resources of the coordinated transmission resources are allocated by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or is the reference network node indicated in the RRC signaling, or is the reference network node indicated in the PDCCH command.
  • the operations further include:
  • the third network node is determined as a timing synchronization reference network node.
  • the effective time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • the cooperative transmission resource is a resource that is valid periodically, or a resource that is valid once, or a resource that is valid a specified number of times.
  • the first network node includes any of the following:
  • the primary cell of the primary base station in dual-connection DC is the primary cell of the primary base station in dual-connection DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the present disclosure further provides a data transmission device, including:
  • a receiving unit configured to receive a radio resource control RRC signaling sent by a first network node, where the RRC signaling is used to pre-configure a coordinated transmission resource;
  • the transmission unit is used to receive or send data based on the coordinated transmission resources.
  • the present disclosure further provides a coordinated transmission resource allocation device, including:
  • the sending unit is used to send radio resource control RRC signaling to the terminal, where the RRC signaling is used to pre-configure coordinated transmission resources.
  • the present disclosure also provides a non-transitory readable storage medium, which stores a computer program, and the computer program is used to enable a processor to execute the data transmission method described in the first aspect as described above, or to execute the collaborative transmission resource allocation method described in the second aspect as described above.
  • the present disclosure further provides a communication device, in which a computer program is stored, and the computer program is used to enable the communication device to execute the data transmission method described in the first aspect as described above, or to execute the collaborative transmission resource allocation method described in the second aspect as described above.
  • the present disclosure also provides a processor-readable storage medium, which stores a computer program, and the computer program is used to enable the processor to execute the data transmission method described in the first aspect as described above, or execute the collaborative transmission resource allocation method described in the second aspect as described above.
  • the present disclosure further provides a chip product, in which a computer program is stored, and the computer program is used to enable the chip product to execute the data transmission method described in the first aspect as described above, or to execute the collaborative transmission resource allocation method described in the second aspect as described above.
  • the data transmission method, cooperative transmission resource allocation method, equipment and device provided by the present invention pre-configure resources for cooperative transmission for the terminal on the network side, and 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 interactive signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, cooperative transmission of different cells or TRPs to one terminal can still be achieved, thereby improving transmission performance.
  • FIG1 is a schematic diagram of coordinated transmission of different cells under two deployment modes provided by related technologies
  • FIG2 is a schematic diagram of a flow chart of a data transmission method provided by an embodiment of the present disclosure
  • FIG3 is a schematic diagram of a flow chart of a method for allocating coordinated transmission resources provided in an embodiment of the present disclosure
  • FIG4 is a schematic diagram of the structure of a terminal provided in an embodiment of the present disclosure.
  • FIG5 is a schematic diagram of the structure of a first network node provided in an embodiment of the present disclosure.
  • FIG6 is a schematic diagram of the structure of a data transmission device provided in an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of the structure of a coordinated transmission resource allocation device provided in an embodiment of the present disclosure.
  • the term "and/or” describes the association relationship of associated objects, indicating that three relationships may exist.
  • a and/or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" generally indicates that the associated objects before and after are in an "or” relationship.
  • plurality in the embodiments of the present disclosure refers to two or more than two, and other quantifiers are similar thereto.
  • the terms “first”, “second”, etc. are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present disclosure 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.
  • the first object can be one or more.
  • FIG1 is a schematic diagram of coordinated transmission of different cells under two deployment modes provided by the related art.
  • the base station is deployed in the manner of CU-DU-TRP or CCU-DDU-TRP, where CU (Central Unit) or CCU (Cloud-based Control Unit) is a central control plane node, and DU (Distributed Unit) or DDU (Distributed Data Unit) is a distributed data unit that can be connected to one or more TRPs.
  • CU Central Unit
  • CCU Cloud-based Control Unit
  • DU Distributed Unit
  • DDU Distributed Data Unit
  • One or more TRPs under the DDU form a base station side cell for scheduling and transmitting UEs.
  • the figure takes one TRP corresponding to one base station side cell as an example.
  • UE1 is transmitted by cell 1 and cell 2 in coordination
  • UE2 is transmitted by cell 2 and cell 3 in coordination.
  • the cells participating in the coordination need to have unified transmission resources (time, frequency, and space resources) and transmission formats (Modulation and Coding Scheme (MCS), Redundancy Version (RV), etc.). Therefore, signaling interaction between cells is required.
  • MCS Modulation and Coding Scheme
  • RV Redundancy Version
  • MCS Modulation and Coding Scheme
  • RV Redundancy Version
  • signaling interaction between cells is required.
  • different cells are managed by one DU/DDU, and it is easier to coordinate the transmission of information over the air interface between cells.
  • different cells belong to different DU/DDUs, and the coordinated transmission of information over the air interface between cells will have the problem of transmission delay, and timely scheduling cannot be achieved.
  • different DU/DDUs usually have synchronization time differences, and the coordinated transmission of different cells under them also has the problem of timing synchronization.
  • 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 it cannot achieve timely interaction of air interface collaborative transmission information.
  • the use of multiple TRPs to perform air interface transmission with the terminal namely the multiple TRP (m-TRP) technology
  • m-TRP multiple TRP
  • the embodiments of the present disclosure provide a solution by pre-configuring resources for collaborative transmission for the terminal on the network side. Even if there is a transmission delay in the interactive signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, collaborative transmission of different cells or TRPs to one terminal can still be achieved.
  • FIG. 2 is a flow chart of a data transmission method provided by an embodiment of the present disclosure. The method is applied to a terminal. As shown in FIG. 2 , the method includes the following steps:
  • Step 200 Receive radio resource control RRC signaling sent by a first network node, where the RRC signaling is used to pre-configure coordinated transmission resources.
  • Step 201 Receive or send data based on coordinated transmission resources.
  • collaborative transmission resources i.e., resources used for collaborative transmission, refer to: downlink resources that send or participate in sending downlink data by other cells or other TRPs (i.e., non-current cells, non-current TRPs), and uplink resources that receive uplink data by other cells or other TRPs.
  • the cooperative transmission resource is a resource that is valid periodically, or a resource that is valid once, or a resource that is valid a specified number of times.
  • the network side pre-configures cooperative transmission resources for the terminal through Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • the terminal receives downlink data or sends uplink data in accordance with the physical layer resources and transmission format allocated for the pre-configured cooperative transmission resources at the moment when the pre-configured cooperative transmission resources take effect.
  • each cell or TRP participating in the cooperative transmission on the network side also sends downlink data or receives uplink data in accordance with the physical layer resources and transmission format allocated in the pre-configured cooperative transmission resources at the moment when the pre-configured cooperative transmission resources take effect. In this way, even if there is a transmission delay in the interactive signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, the cooperative transmission of different cells or TRPs to one terminal can still be achieved.
  • the RRC signaling includes one or more of the following information:
  • the effective time information can be used to determine the time when the coordinated transmission resource actually takes effect.
  • the effective time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • RRC signaling pre-configures the absolute effective time of the coordinated transmission resource, and the terminal determines the actual effective time of the coordinated transmission resource based on the absolute effective time.
  • the absolute effective time can be a value expressed in units such as year, month, day, hour, minute, second, millisecond, etc., or a value expressed by a system frame number, subframe number, time slot number, etc.
  • the absolute effective time of the collaborative transmission resources pre-configured by RRC signaling is time-deviation deltaT relative to the time when the RRC signaling is sent.
  • the terminal receives the RRC signaling, it determines the time when the RRC signaling is sent, adds the time deviation value pre-configured in the RRC signaling to the time when the RRC signaling is sent, and determines the actual effective time of the collaborative transmission resources.
  • the coordinated transmission resources preconfigured by the RRC signaling are periodically effective resources, and the terminal periodically determines the start time of each coordinated transmission resource based on the effective time of the coordinated transmission resource and the period value of the coordinated transmission resource.
  • the terminal determines that from the start time of each coordinated transmission resource, there are N consecutive preconfigured resources in each coordinated transmission resource period. If the preconfigured coordinated transmission resources are effective once, the number of preconfigured coordinated transmission resources is determined to be N.
  • the terminal determines that the cooperative transmission resources are effective for a specified number of times (ie, K times), or determines that the cooperative transmission resources are valid within K periods (ie, the effective times can also be understood as the number of effective periods).
  • 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.
  • MCS multi-input multi-output
  • the terminal determines the actual physical layer resource allocation of each coordinated transmission resource in each coordinated transmission resource period, including the time-frequency resource location, transmission format (such as MCS, RV), etc.
  • Reference network node indication is used to indicate a reference network node (e.g., a reference cell or a reference TRP), and the actual physical layer resource allocation of the pre-configured coordinated transmission resources can be determined based on the uplink and downlink resource configuration of the reference network node. For example, the absolute position of the physical layer time-frequency resources of the coordinated transmission resources is determined based on the uplink and downlink resource configuration of the reference network node and the physical layer resource configuration information of the coordinated transmission resources carried in the pre-configured signaling.
  • a reference network node e.g., a reference cell or a reference TRP
  • the reference network node indication may be an identifier of a reference network node, such as a cell identifier of a reference cell, a TRP identifier of a reference TRP, and the like.
  • the terminal determines the resources for actually receiving the transmission according to the downlink frequency configuration of cell 1 and the physical layer resource configuration information of the coordinated transmission resources.
  • Cell 2 needs to obtain the downlink resource configuration of cell 1, determine the transmission resources in combination with the physical layer resource configuration information of the coordinated transmission resources, and participate in the downlink transmission.
  • Cell 1 performs downlink transmission according to the downlink resource configuration of the cell and the physical layer resource configuration information of the coordinated transmission resources.
  • Preconfigured resource type indication is used to indicate that the currently configured preconfigured resource is a resource used for coordinated transmission.
  • the information about network nodes participating in cooperative transmission is used to indicate network nodes participating in cooperative transmission, such as cells or TRPs participating in cooperative transmission.
  • the information of the network nodes participating in the cooperative transmission may be an identifier of the network nodes participating in the cooperative transmission, such as a cell identifier or a TRP identifier.
  • the identifier is a Radio Network Temporary Identity (RNTI) x-RNTI or a network-side high-level identifier dedicated to scrambling cooperative transmission.
  • the terminal descrambles (downlink) or scrambles (uplink) the received signal based on the identifier for transmission that can be uniquely identified by both the network side and the terminal side.
  • RNTI Radio Network Temporary Identity
  • the terminal descrambles (downlink) or scrambles (uplink) the received signal based on the identifier for transmission that can be uniquely identified by both the network side and the terminal side.
  • the first network node includes any of the following:
  • CA Primary cell under carrier aggregation
  • the terminal receives RRC signaling in the main cell under CA, and the RRC signaling is used to pre-configure cooperative transmission resources.
  • the pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (that is, not the main cell under CA), and uplink resources that receive uplink data by other cells or TRP.
  • the terminal receives RRC signaling in the main cell of the main base station under DC, and the RRC signaling is used to pre-configure coordinated transmission resources.
  • the pre-configured coordinated transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (i.e., the main cell of the main base station other than the DC), and uplink resources that receive uplink data by other cells or TRP.
  • the terminal receives RRC signaling in the main cell of the secondary base station under DC, and the RRC signaling is used to pre-configure coordinated transmission resources.
  • the pre-configured coordinated transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (i.e., the main cell of the secondary base station not under DC), and uplink resources that receive uplink data by other cells or TRP.
  • the terminal receives RRC signaling in the main cell in a TAG, and the RRC signaling is used to pre-configure coordinated transmission resources.
  • the pre-configured coordinated transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (i.e., not the main cell in the TAG), and uplink resources that receive uplink data by other cells or TRP.
  • the terminal receives RRC signaling in any cell or any TRP currently connected, and the RRC signaling is used to pre-configure coordinated transmission resources.
  • the pre-configured coordinated transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., cells or TRPs not currently connected), and uplink resources that receive uplink data by other cells or TRPs.
  • a distributed data unit to which any TRP to which the terminal is currently connected is connected.
  • the distributed data unit can be a DU or a DDU.
  • the terminal receives RRC signaling in the DU or DDU connected to any currently connected TRP, and the RRC signaling is used to pre-configure cooperative transmission resources.
  • the pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., TRPs that are not currently connected), and uplink resources that receive uplink data by other cells or TRPs.
  • the source cell or source TRP refers to the dominant cell or dominant TRP for coordinated transmission. Relatively speaking, other cells or TRPs participating in coordinated transmission mainly coordinate and assist the source cell or source TRP in uplink and downlink data transmission.
  • the terminal receives RRC signaling in the source cell or source TRP performing collaborative transmission.
  • the RRC signaling is used to pre-configure collaborative transmission resources.
  • the pre-configured collaborative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., not the source cell or source TRP), and uplink resources that receive uplink data by other cells or TRPs.
  • the distributed data unit to which the source TRP for collaborative transmission is connected.
  • the distributed data unit can be a DU or a DDU.
  • the terminal receives RRC signaling in the DU or DDU connected to the source TRP performing collaborative transmission.
  • the RRC signaling is used to pre-configure collaborative transmission resources.
  • the pre-configured collaborative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., not the source TRP), and uplink resources that receive uplink data by other cells or TRPs.
  • the information for pre-configuring the coordinated transmission resources (or pre-configuration information of the coordinated transmission resources) contained in the RRC signaling sent by the first network node is not limited in the specific determination method of the present disclosure.
  • the first network node may determine the pre-configuration information and send it to the terminal, and the first network node may also send the pre-configuration information to other network nodes participating in the coordinated transmission.
  • other network nodes may determine the pre-configuration information and send it to the first network node, and the other network nodes may also send the pre-configuration information to other network nodes participating in the coordinated transmission.
  • the network nodes participating in the coordinated transmission need to have the same understanding of the pre-configured coordinated transmission resources.
  • the data transmission method provided by the embodiment of the present disclosure pre-configures resources for coordinated transmission for the terminal on 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 interactive signaling 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 one terminal can still be achieved, thereby improving transmission performance.
  • the method further comprises:
  • a physical downlink control channel PDCCH command sent by the second network node is received, where the PDCCH command is used to activate the coordinated transmission resource.
  • the coordinated transmission resources after the network side pre-configures the coordinated transmission resources through RRC signaling, the coordinated transmission resources are in an activated state, and the terminal can use the coordinated transmission resources for uplink and downlink data transmission.
  • the initial state of the coordinated transmission resources is inactive, and the network side activates the coordinated transmission resources through a Physical Downlink Control Channel (PDCCH) command.
  • PDCCH Physical Downlink Control Channel
  • the PDCCH command includes downlink control information (DCI), which is for illustrative purposes only.
  • DCI downlink control information
  • Other signaling, messages, or commands known to those skilled in the art that can implement the PDCCH command of the present disclosure can be applied here without limitation.
  • the PDCCH order includes one or more of the following information:
  • the effective time information can be used to determine the time when the coordinated transmission resource actually takes effect.
  • the effective time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • the PDCCH command includes DCI
  • the DCI indicates the absolute effective time of the preconfigured coordinated transmission resource
  • 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.
  • 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.
  • the terminal 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.
  • 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.
  • 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).
  • the coordinated transmission resource is valid once.
  • 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.
  • 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.
  • Reference network node indication is used to indicate a reference network node (e.g., a reference cell or a reference TRP), and the actual physical layer resource allocation of the pre-configured coordinated transmission resources can be determined based on the uplink and downlink resource configuration of the reference network node. For example, the absolute position of the physical layer time-frequency resources of the coordinated transmission resources is determined based on the uplink and downlink resource configuration of the reference network node and the physical layer resource allocation information of the coordinated transmission resources carried in the activation command.
  • a reference network node e.g., a reference cell or a reference TRP
  • the reference network node indication may be an identifier of a reference network node, such as a cell identifier of a reference cell, a TRP identifier of a reference TRP, and the like.
  • the terminal determines the resources for actually receiving the transmission according to the downlink frequency configuration of cell 1 and the physical layer resource allocation information of the coordinated transmission resources in the activation command.
  • Cell 2 needs to obtain the downlink resource configuration of cell 1, and determine the transmission resources in combination with the physical layer resource allocation information of the coordinated transmission resources in the activation command to participate in the downlink transmission.
  • Cell 1 performs downlink transmission according to the downlink resource configuration of the cell and the physical layer resource allocation information of the coordinated transmission resources in the activation command.
  • Information about network nodes participating in cooperative transmission is used to indicate network nodes participating in cooperative transmission, such as cells or TRPs participating in cooperative transmission.
  • the information of the network nodes participating in the cooperative transmission may be an identifier of the network nodes participating in the cooperative transmission, such as a cell identifier or a TRP identifier.
  • the second network node includes any of the following:
  • the primary cell under CA The primary cell under CA;
  • the primary cell of the primary base station under DC is the primary cell of the primary base station under DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the primary cell in TAG is the primary cell in TAG
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the second network node and the first network node are the same network node. Alternatively, the second network node and the first network node are different network nodes.
  • the method further comprises:
  • the terminal determines the sending time of the RRC signaling, and determines the sending time of the RRC signaling as the actual effectiveness time of the coordinated transmission resources.
  • the terminal determines the time of receiving the RRC signaling as the actual effective time of the coordinated transmission resources.
  • the network side uses the sending time of the RRC signaling as the actual effective time of the coordinated transmission resource, and the terminal side uses the receiving time of the RRC signaling as the actual effective time of the coordinated transmission resource.
  • the RRC signaling needs to include specific resource allocation information, that is, configured and activated through the RRC signaling.
  • the terminal uses the absolute effective time of the coordinated transmission resource indicated in the RRC signaling as the actual effective time of the coordinated transmission resource.
  • the terminal determines the time when the RRC signaling is sent, adds the sending time of the RRC signaling to the time deviation value indicated in the RRC signaling, and determines the actual effective time of the coordinated transmission resource.
  • the time deviation value may also be specified by the protocol.
  • the terminal determines the sending time of the PDCCH command, and determines the sending time of the PDCCH command as the actual effective time of the coordinated transmission resources.
  • the terminal determines the time of receiving the PDCCH command as the actual effective time of the coordinated transmission resources.
  • the network side uses the sending time of the PDCCH command as the actual effective time of the coordinated transmission resource, and the terminal side uses the receiving time of the PDCCH command as the actual effective time of the coordinated transmission resource.
  • 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.
  • the terminal determines the time when the PDCCH command is sent, adds the time when the PDCCH command is sent to the time when the PDCCH command is sent, and determines the actual effective time of the coordinated transmission resource.
  • the time offset value may also be specified by the protocol.
  • the method further comprises:
  • the third network node when the physical layer resources of the coordinated transmission resources are allocated by RRC signaling, the third network node is the first network node, or is the reference network node indicated in the RRC signaling; or, when the physical layer resources of the coordinated transmission resources are allocated by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or is the reference network node indicated in the RRC signaling, or is the reference network node indicated in the PDCCH command.
  • the actual physical layer resource allocation for collaborative transmission (the absolute position of the physical layer time-frequency resources) needs to be determined based on the uplink and downlink resource configuration of a specific network node.
  • the specific network node is called the third network node. It can be understood that the actual physical layer resource allocation of collaborative transmission resources corresponds to or is associated with the third network node.
  • the coordinated transmission resources are allocated physical layer resources by RRC signaling, and the terminal performs time-frequency resource allocation for the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the cell or TRP that sends the RRC signaling. That is, the time-frequency resource allocation specified in the RRC signaling corresponds to the cell or TRP that sends the RRC signaling.
  • the physical layer resources of the coordinated transmission resources are allocated by RRC signaling, and a reference cell or reference TRP is specified in the RRC signaling.
  • the terminal performs time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP, that is, the time-frequency resource allocation specified in the RRC signaling corresponds to the reference cell or reference TRP specified in the RRC signaling.
  • the coordinated transmission resources are allocated physical layer resources by the PDCCH command, and the terminal performs time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the cell or TRP that sends the PDCCH command. That is, the time-frequency resource allocation specified in the PDCCH command corresponds to the cell or TRP that sends the PDCCH command.
  • the physical layer resources of the coordinated transmission resources are allocated by the PDCCH command, and the reference cell or reference TRP is specified in the RRC signaling.
  • the terminal performs time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP, that is, the time-frequency resource allocation specified in the PDCCH command corresponds to the reference cell or reference TRP specified in the RRC signaling.
  • the physical layer resources of the coordinated transmission resources are allocated by the PDCCH command, and the reference cell or reference TRP is specified in the PDCCH command.
  • the terminal performs time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP, that is, the time-frequency resource allocation specified in the PDCCH command corresponds to the reference cell or reference TRP specified in the PDCCH command.
  • the method further comprises:
  • the third network node is determined as a timing synchronization reference network node.
  • 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.
  • a third network node (such as the cell or TRP corresponding to the collaborative transmission resource allocation mentioned above) can be used as the timing synchronization reference network node.
  • FIG3 is a flow chart of a method for allocating coordinated transmission resources provided in an embodiment of the present disclosure. The method is applied to a first network node. As shown in FIG3 , the method includes the following steps:
  • Step 300 Send radio resource control RRC signaling to the terminal, where the RRC signaling is used to pre-configure cooperative transmission resources.
  • collaborative transmission resources i.e., resources used for collaborative transmission, refer to: downlink resources that send or participate in sending downlink data by other cells or other TRPs (i.e., non-current cells, non-current TRPs), and uplink resources that receive uplink data by other cells or other TRPs.
  • the cooperative transmission resource is a resource that is valid periodically, or a resource that is valid once, or a resource that is valid a specified number of times.
  • the network side preconfigures cooperative transmission resources for the terminal through RRC signaling.
  • the terminal receives downlink data or sends uplink data in accordance with the physical layer resources and transmission format allocated for the preconfigured cooperative transmission resources at the moment when the preconfigured cooperative transmission resources take effect.
  • each cell or TRP participating in the cooperative transmission on the network side also sends downlink data or receives uplink data in accordance with the physical layer resources and transmission format allocated in the preconfigured cooperative transmission resources at the moment when the preconfigured cooperative transmission resources take effect. In this way, even if there is a transmission delay in the interactive signaling between different cells or TRPs, or there is a timing synchronization difference between different cells or TRPs, the cooperative transmission of different cells or TRPs to one terminal can still be achieved.
  • the RRC signaling includes one or more of the following information:
  • the effective time information can be used to determine the time when the coordinated transmission resource actually takes effect.
  • the effective time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • RRC signaling pre-configures the absolute effective time of the coordinated transmission resource, and the terminal determines the actual effective time of the coordinated transmission resource based on the absolute effective time.
  • the absolute effective time can be a value expressed in units such as year, month, day, hour, minute, second, millisecond, etc., or a value expressed by a system frame number, subframe number, time slot number, etc.
  • the absolute effective time of the collaborative transmission resources pre-configured by RRC signaling is time-deviation deltaT relative to the time when the RRC signaling is sent.
  • the terminal receives the RRC signaling, it determines the time when the RRC signaling is sent, adds the time deviation value pre-configured in the RRC signaling to the time when the RRC signaling is sent, and determines the actual effective time of the collaborative transmission resources.
  • the coordinated transmission resources preconfigured by the RRC signaling are periodically effective resources, and the terminal periodically determines the start time of each coordinated transmission resource based on the effective time of the coordinated transmission resource and the period value of the coordinated transmission resource.
  • the terminal determines that from the start time of each coordinated transmission resource, there are N consecutive preconfigured resources in each coordinated transmission resource period. If the preconfigured coordinated transmission resources are effective once, the number of preconfigured coordinated transmission resources is determined to be N.
  • the terminal determines that the cooperative transmission resources are effective for a specified number of times (ie, K times), or determines that the cooperative transmission resources are valid within K periods (ie, the effective times can also be understood as the number of effective periods).
  • the physical layer resource configuration information includes information such as time-frequency resource configuration and transmission mode.
  • the transmission mode (or transmission format) includes MCS, RV, MIMO precoding matrix information, etc.
  • the terminal determines the actual physical layer resource allocation of each coordinated transmission resource in each coordinated transmission resource period, including the time-frequency resource location, transmission format (such as MCS, RV), etc.
  • Reference network node indication is used to indicate a reference network node (e.g., a reference cell or a reference TRP), and the actual physical layer resource allocation of the pre-configured coordinated transmission resources can be determined based on the uplink and downlink resource configuration of the reference network node. For example, the absolute position of the physical layer time-frequency resources of the coordinated transmission resources is determined based on the uplink and downlink resource configuration of the reference network node and the physical layer resource configuration information of the coordinated transmission resources carried in the pre-configured signaling.
  • a reference network node e.g., a reference cell or a reference TRP
  • the reference network node indication may be an identifier of a reference network node, such as a cell identifier of a reference cell, a TRP identifier of a reference TRP, and the like.
  • the terminal determines the resources for actually receiving the transmission according to the downlink frequency configuration of cell 1 and the physical layer resource configuration information of the coordinated transmission resources.
  • Cell 2 needs to obtain the downlink resource configuration of cell 1, determine the transmission resources in combination with the physical layer resource configuration information of the coordinated transmission resources, and participate in the downlink transmission.
  • Cell 1 performs downlink transmission according to the downlink resource configuration of the cell and the physical layer resource configuration information of the coordinated transmission resources.
  • Preconfigured resource type indication is used to indicate that the currently configured preconfigured resource is a resource used for coordinated transmission.
  • the information about network nodes participating in cooperative transmission is used to indicate network nodes participating in cooperative transmission, such as cells or TRPs participating in cooperative transmission.
  • the information of the network nodes participating in the cooperative transmission may be an identifier of the network nodes participating in the cooperative transmission, such as a cell identifier or a TRP identifier.
  • the identifier is a radio network temporary identifier x-RNTI or a network-side high-level identifier dedicated to scrambling the coordinated transmission.
  • the terminal descrambles (downlink) or scrambles (uplink) the received signal based on the identifier for transmission that can be uniquely identified by both the network side and the terminal side.
  • the first network node includes any of the following:
  • the terminal receives RRC signaling in the main cell under CA, and the RRC signaling is used to pre-configure cooperative transmission resources.
  • the pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (that is, not the main cell under CA), and uplink resources that receive uplink data by other cells or TRP.
  • the terminal receives RRC signaling in the main cell of the main base station under DC, and the RRC signaling is used to pre-configure coordinated transmission resources.
  • the pre-configured coordinated transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (i.e., the main cell of the main base station other than the DC), and uplink resources that receive uplink data by other cells or TRP.
  • the terminal receives RRC signaling in the main cell of the secondary base station under DC, and the RRC signaling is used to pre-configure coordinated transmission resources.
  • the pre-configured coordinated transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (i.e., the main cell of the secondary base station not under DC), and uplink resources that receive uplink data by other cells or TRP.
  • the terminal receives RRC signaling in the main cell in a TAG, and the RRC signaling is used to pre-configure coordinated transmission resources.
  • the pre-configured coordinated transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRP (i.e., not the main cell in the TAG), and uplink resources that receive uplink data by other cells or TRP.
  • the terminal receives RRC signaling in any cell or any TRP currently connected, and the RRC signaling is used to pre-configure coordinated transmission resources.
  • the pre-configured coordinated transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., cells or TRPs not currently connected), and uplink resources that receive uplink data by other cells or TRPs.
  • a distributed data unit to which any TRP to which the terminal is currently connected is connected.
  • the distributed data unit can be a DU or a DDU.
  • the terminal receives RRC signaling in the DU or DDU connected to any currently connected TRP, and the RRC signaling is used to pre-configure cooperative transmission resources.
  • the pre-configured cooperative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., TRPs that are not currently connected), and uplink resources that receive uplink data by other cells or TRPs.
  • the source cell or source TRP refers to the dominant cell or dominant TRP for coordinated transmission. Relatively speaking, other cells or TRPs participating in coordinated transmission mainly coordinate and assist the source cell or source TRP in uplink and downlink data transmission.
  • the terminal receives RRC signaling in the source cell or source TRP performing collaborative transmission.
  • the RRC signaling is used to pre-configure collaborative transmission resources.
  • the pre-configured collaborative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., not the source cell or source TRP), and uplink resources that receive uplink data by other cells or TRPs.
  • the distributed data unit to which the source TRP for collaborative transmission is connected.
  • the distributed data unit can be a DU or a DDU.
  • the terminal receives RRC signaling in the DU or DDU connected to the source TRP performing collaborative transmission.
  • the RRC signaling is used to pre-configure collaborative transmission resources.
  • the pre-configured collaborative transmission resources are: downlink resources that send or participate in sending downlink data by other cells or TRPs (i.e., not the source TRP), and uplink resources that receive uplink data by other cells or TRPs.
  • the information for pre-configuring the coordinated transmission resources (or pre-configuration information of the coordinated transmission resources) contained in the RRC signaling sent by the first network node is not limited in the specific determination method of the present disclosure.
  • the first network node may determine the pre-configuration information and send it to the terminal, and the first network node may also send the pre-configuration information to other network nodes participating in the coordinated transmission.
  • other network nodes may determine the pre-configuration information and send it to the first network node, and the other network nodes may also send the pre-configuration information to other network nodes participating in the coordinated transmission.
  • the network nodes participating in the coordinated transmission need to have the same understanding of the pre-configured coordinated transmission resources.
  • the data transmission method provided by the embodiment of the present disclosure pre-configures resources for coordinated transmission for the terminal on 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 interactive signaling 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 one terminal can still be achieved, thereby improving transmission performance.
  • the method further comprises:
  • a physical downlink control channel PDCCH command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resources.
  • the coordinated transmission resources after the network side pre-configures the coordinated transmission resources through RRC signaling, the coordinated transmission resources are in an activated state, and the terminal can use the coordinated transmission resources for uplink and downlink data transmission.
  • the initial state of the coordinated transmission resources is inactive, and the network side activates the coordinated transmission resources through a PDCCH command.
  • the PDCCH order includes one or more of the following information:
  • the effective time information can be used to determine the time when the coordinated transmission resource actually takes effect.
  • the effective time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • 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.
  • 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.
  • the terminal 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.
  • 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.
  • 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).
  • the coordinated transmission resource is valid once.
  • 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.
  • 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.
  • Reference network node indication is used to indicate a reference network node (e.g., a reference cell or a reference TRP), and the actual physical layer resource allocation of the pre-configured coordinated transmission resources can be determined based on the uplink and downlink resource configuration of the reference network node. For example, the absolute position of the physical layer time-frequency resources of the coordinated transmission resources is determined based on the uplink and downlink resource configuration of the reference network node and the physical layer resource allocation information of the coordinated transmission resources carried in the activation command.
  • a reference network node e.g., a reference cell or a reference TRP
  • the reference network node indication may be an identifier of a reference network node, such as a cell identifier of a reference cell, a TRP identifier of a reference TRP, and the like.
  • the terminal determines the resources for actually receiving the transmission according to the downlink frequency configuration of cell 1 and the physical layer resource allocation information of the coordinated transmission resources in the activation command.
  • Cell 2 needs to obtain the downlink resource configuration of cell 1, and determine the transmission resources in combination with the physical layer resource allocation information of the coordinated transmission resources in the activation command to participate in the downlink transmission.
  • Cell 1 performs downlink transmission according to the downlink resource configuration of the cell and the physical layer resource allocation information of the coordinated transmission resources in the activation command.
  • Information about network nodes participating in cooperative transmission is used to indicate network nodes participating in cooperative transmission, such as cells or TRPs participating in cooperative transmission.
  • the information of the network nodes participating in the cooperative transmission may be an identifier of the network nodes participating in the cooperative transmission, such as a cell identifier or a TRP identifier.
  • the method further comprises:
  • Pre-configuration information of cooperative transmission resources and/or activation information of cooperative transmission resources are exchanged with other network nodes participating in cooperative transmission through interfaces between distributed data units, interfaces between central control plane nodes and distributed data units, or interfaces between base stations.
  • the network nodes participating in the cooperative transmission need to have the same understanding of the pre-configured cooperative transmission resources, and there may be multiple ways to exchange the cooperative transmission resource information.
  • the cells or TRPs participating in the coordinated transmission belong to different distributed data units (DU or DDU), and the pre-configuration information and/or activation information of the coordinated transmission resources are exchanged through the interface between the distributed data units.
  • DU or DDU distributed data units
  • the cells or TRPs participating in the collaborative transmission belong to different distributed data units (DU or DDU), and the central control plane node (CU or CCU) exchanges the pre-configuration information and/or activation information of the collaborative transmission resources through the interface between the central control plane node and the distributed data unit (similar to the F1 interface of 5G).
  • DU or DDU distributed data units
  • CU or CCU central control plane node
  • the cells or TRPs participating in the collaborative transmission belong to different base stations, and the pre-configuration information and/or activation information of the collaborative transmission resources are exchanged through the interface between the base stations (similar to the Xn interface of 5G).
  • the method further comprises:
  • the sending time or receiving time of RRC signaling The sending time or receiving time of RRC signaling
  • the sending time or receiving time of the PDCCH command for activating the coordinated transmission resources
  • the method further comprises:
  • the third network node when the physical layer resources of the coordinated transmission resources are allocated by RRC signaling, the third network node is the first network node, or is the reference network node indicated in the RRC signaling; or, when the physical layer resources of the coordinated transmission resources are allocated by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or is the reference network node indicated in the RRC signaling, or is the reference network node indicated in the PDCCH command.
  • the actual physical layer resource allocation for collaborative transmission (the absolute position of the physical layer time-frequency resources) needs to be determined based on the uplink and downlink resource configuration of a specific network node.
  • the specific network node is called the third network node. It can be understood that the actual physical layer resource allocation of collaborative transmission resources corresponds to or is associated with the third network node.
  • the coordinated transmission resources are allocated physical layer resources by RRC signaling, and the network side determines the time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the cell or TRP that sends the RRC signaling; or, determines the time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP specified in the RRC signaling.
  • the coordinated transmission resources are allocated physical layer resources by PDCCH commands, and the network side determines the time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the cell or TRP that sends the PDCCH command; or, determines the time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP specified in the RRC signaling; or, determines the time-frequency resource allocation of the coordinated transmission resources based on the uplink and downlink frequency resource configuration of the reference cell or reference TRP specified in the PDCCH command.
  • the method further comprises:
  • the third network node is determined as a timing synchronization reference network node.
  • 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.
  • a third network node can be used as the timing synchronization reference network node.
  • Example 1 RRC signaling pre-configures and activates cooperative transmission resources, and the cooperative transmission resources take effect periodically.
  • Step 1 The base station sends RRC signaling to the terminal to pre-configure cooperative transmission resources.
  • the base station side node that sends the RRC signaling is any of the following:
  • a specific cell such as a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the RRC signaling includes one or more of the following information:
  • Physical layer resource configuration of coordinated transmission resources including time-frequency resource configuration, and/or transmission mode (MCS, RV), etc. (mandatory);
  • a pre-configured resource type indication indicating that the currently configured pre-configured resource is a resource for collaborative transmission (optional);
  • An identifier used to scramble the collaborative transmission such as x-RNTI, and a network-side high-layer identifier (optional).
  • Step 2 The cell or TRP participating in the coordinated transmission on the base station side sends downlink transmission or receives uplink transmission according to the physical layer resources and transmission format allocated by the coordinated transmission resources at the time when the coordinated transmission resources take effect.
  • 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 network node is specifically the reference cell or reference TRP configured by RRC signaling, or the cell or TRP that sends the RRC signaling.
  • Step 1 Receive RRC signaling of pre-configured coordinated transmission resources sent by the base station side.
  • the RRC signaling is received at any of the following base station side nodes:
  • the terminal receives the RRC signaling in a specific cell, where the specific cell is a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the terminal receives the RRC signaling in any cell or TRP currently connected, or the DU/DDU connected by the TRP;
  • the terminal receives the RRC signaling from the source cell or source TRP that can perform collaborative transmission, or the DU/DDU connected to the source TRP.
  • the RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:
  • a time offset deltaT of the effective time of the coordinated transmission resource relative to the time when the RRC signaling is sent (optional, mutually exclusive with a)).
  • the terminal determines the time when the RRC signaling is sent, and adds the time offset deltaT to determine the actual effective time of the coordinated transmission resource;
  • Period of the coordinated transmission resource (mandatory): the terminal periodically determines the start time of each coordinated transmission resource based on the effective time and period value of the coordinated transmission resource;
  • the terminal determines that there are N consecutive pre-configured resources in each cooperative transmission resource period starting from the start time of each cooperative transmission resource;
  • the terminal determines the actual physical layer resource allocation of each cooperative transmission resource in each cooperative transmission resource period, including the time-frequency resource position, transmission format MCS, RV, etc.;
  • the terminal determines the actual physical layer resource allocation of the coordinated transmission resources in combination with e) and f), and the actual physical layer resource allocation is associated with the uplink and downlink resource configuration of a specific cell or TRP. If this item is configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the pre-configured reference cell or reference TRP. If this item is not configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the cell or TRP that sends the RRC signaling;
  • a pre-configured resource type indication indicating that the currently configured pre-configured resource is a resource for collaborative transmission (optional);
  • the terminal determines the cell or TRP participating in the coordinated transmission based on this parameter;
  • An identifier used to scramble the collaborative transmission such as x-RNTI, a high-level network identifier (optional). If this parameter is present, the terminal descrambles (downlink) or scrambles (uplink) the received signal based on the identifier, and is used for transmission that can be uniquely identified by both the base station side and the terminal side.
  • Step 2 After the coordinated transmission resources are preconfigured on the network side, the terminal receives downlink transmission or sends uplink transmission according to the physical layer resources and transmission format allocated for the coordinated transmission resources when the coordinated transmission resources take effect.
  • the timing synchronization relationship of the downlink transmission or uplink transmission is determined according to the timing synchronization relationship between the network node associated with the physical resources allocated for the coordinated transmission and the terminal, and the network node is specifically a reference cell or reference TRP configured by RRC signaling, or a cell or TRP that sends RRC signaling.
  • Example 2 RRC signaling pre-configures and activates coordinated transmission resources, and the coordinated transmission resources take effect once or a specified number of times.
  • Step 1 The base station sends RRC signaling to the terminal to pre-configure cooperative transmission resources.
  • the base station side node that sends the RRC signaling is any of the following:
  • a specific cell such as a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the RRC signaling includes one or more of the following information:
  • Physical layer resource configuration of coordinated transmission resources including time-frequency resource configuration, and/or transmission mode (MCS, RV), etc. (mandatory);
  • Pre-configured resource type indication indicating that the currently configured pre-configured resource is a resource for collaborative transmission (optional)
  • Identifier used for scrambling collaborative transmission such as x-RNTI, network side high-level identifier (optional).
  • Step 2 The cell or TRP participating in the coordinated transmission on the base station side sends downlink transmission or receives uplink transmission according to the physical layer resources and transmission format allocated by the coordinated transmission resources at the time when the coordinated transmission resources take effect.
  • 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 network node is specifically the reference cell or reference TRP configured by RRC signaling, or the cell or TRP that sends the RRC signaling.
  • Step 1 Receive RRC signaling of pre-configured coordinated transmission resources sent by the base station side.
  • the RRC signaling is received at any of the following base station side nodes:
  • the terminal receives the RRC signaling in a specific cell, where the specific cell is a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the terminal receives the RRC signaling in any cell or TRP currently connected, or the DU/DDU connected by the TRP;
  • the terminal receives the RRC signaling from the source cell or source TRP that can perform collaborative transmission, or the DU/DDU connected to the source TRP.
  • the RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:
  • a time offset deltaT of the effective time of the coordinated transmission resource relative to the time when the RRC signaling is sent (optional, mutually exclusive with a)).
  • the terminal determines the time when the RRC signaling is sent, and adds the time offset deltaT to determine the actual effective time of the coordinated transmission resource;
  • Period of the coordinated transmission resource (optional). This item is configured together with the "number of times the coordinated transmission resource takes effect K" in item e). 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.
  • the number of pre-configured resources N (optional): the terminal determines that from the start time of each coordinated transmission resource, if the coordinated transmission resource is effective periodically or in several cycles, there are N consecutive pre-configured resources in each coordinated transmission resource cycle; if the coordinated transmission resource is effective once, the number of pre-configured resources is determined to be N;
  • the terminal determines the actual physical layer resource allocation of each cooperative transmission resource in each cooperative transmission resource period, including the time-frequency resource position, transmission format MCS, RV, etc.;
  • the terminal determines the actual physical layer resource allocation of the coordinated transmission resources in combination with f) and g), and the actual physical layer resource allocation is associated with the uplink and downlink resource configuration of a specific cell or TRP. If this item is configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the pre-configured reference cell or reference TRP. If this item is not configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the cell or TRP that sends the RRC signaling;
  • a pre-configured resource type indication indicating that the currently configured pre-configured resource is a resource for cooperative transmission (optional);
  • the terminal determines the cell or TRP participating in the coordinated transmission based on this parameter;
  • identifier used to scramble the collaborative transmission resources, such as x-RNTI, a high-level network identifier (optional). If this parameter is present, the terminal descrambles (downlink) or scrambles (uplink) the received signal based on the identifier, for transmission that can be uniquely identified by both the base station side and the terminal side.
  • Step 2 At the moment when the coordinated transmission resource takes effect, the terminal receives downlink transmission or sends uplink transmission according to the physical layer resources and transmission format allocated for 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 associated with the physical resources allocated for the coordinated transmission and the terminal, and the network node is specifically a reference cell or reference TRP configured by RRC signaling, or a cell or TRP that sends RRC signaling.
  • Example 3 RRC signaling pre-configures coordinated transmission resources, PDCCH commands activate coordinated transmission resources, and coordinated transmission resources take effect periodically.
  • Step 1 The base station sends RRC signaling to the terminal to pre-configure cooperative transmission resources.
  • the base station side node that sends the RRC signaling is any of the following:
  • a specific cell such as a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the RRC signaling includes one or more of the following information:
  • a pre-configured resource type indication indicating that the currently configured pre-configured resource is a resource for collaborative transmission (optional);
  • An identifier used to scramble the collaborative transmission such as x-RNTI, a network-side high-layer identifier (optional).
  • Step 2 The base station sends a PDCCH command to the terminal to activate the pre-configured coordinated transmission resources.
  • the base station side node that sends the PDCCH command is any of the following:
  • a specific cell such as a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the PDCCH command for activating the pre-configured coordinated transmission resources includes one or more of the following information:
  • Physical layer resource configuration of coordinated transmission resources including time-frequency resource configuration, and/or transmission mode (MCS, RV), etc. (mandatory);
  • step 1 Cells or TRPs participating in coordinated transmission (optional). If the RRC signaling has been configured in step 1, this parameter may not be configured.
  • Step 3 The cell or TRP participating in the coordinated transmission on the base station side sends downlink transmission or receives uplink transmission according to the physical layer resources and transmission format allocated by the coordinated transmission resources when the coordinated transmission resources take effect.
  • 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 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.
  • Step 1 Receive RRC signaling of pre-configured coordinated transmission resources sent by the base station side.
  • the RRC signaling is received at any of the following base station side nodes:
  • the terminal receives the RRC signaling in a specific cell, where the specific cell is a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the terminal receives the RRC signaling in any cell or TRP currently connected, or the DU/DDU connected by the TRP;
  • the terminal receives the RRC signaling from the source cell or source TRP that can perform collaborative transmission, or the DU/DDU connected to the source TRP.
  • the RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:
  • the terminal determines that there are N consecutive pre-configured resources in each coordinated transmission resource period starting from the start time of each coordinated transmission resource;
  • a pre-configured resource type indication indicating that the currently configured pre-configured resource is a resource for collaborative transmission (optional);
  • An identifier used to scramble the collaborative transmission resources such as x-RNTI, a network-side high-layer identifier (optional).
  • Step 2 The terminal receives the PDCCH command sent by the base station side and activates the pre-configured coordinated transmission resources.
  • the base station side node that sends the PDCCH command is any of the following:
  • the terminal receives the PDCCH command in a specific cell, which is a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the terminal receives the PDCCH command in any cell or TRP currently connected, or in the DU/DDU connected by the TRP;
  • the terminal receives the PDCCH command from the source cell or source TRP that can perform collaborative transmission, or the DU/DDU connected to the source TRP.
  • 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:
  • deltaT (optional, mutually exclusive with a)) of the time when the coordinated transmission resource takes effect relative to the time when the PDCCH command is sent.
  • the terminal determines the actual time when the coordinated transmission resource takes effect based on this parameter;
  • the terminal determines that there are N consecutive pre-configured resources in each coordinated transmission resource period based on the number of pre-configured resources indicated in the RRC signaling or PDCCH command;
  • Physical layer resource configuration of the coordinated transmission resources including time-frequency resource configuration, and/or transmission mode (MCS, RV), etc. (mandatory).
  • the terminal determines the actual physical layer resource allocation of each pre-configured resource in each coordinated transmission resource period, including the time-frequency resource location, transmission format MCS, RV, etc.;
  • Reference cell or reference TRP (optional). This parameter may not be configured if the RRC signaling has been configured in step 1.
  • the terminal determines the actual physical layer resource allocation of the coordinated transmission resources in combination with d) and e).
  • the actual physical layer resource allocation is associated with the uplink and downlink resource configuration of a specific cell or TRP. If the base station indicates the reference cell or reference TRP by RRC signaling or PDCCH command, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the reference cell or reference TRP indicated by the RRC signaling or PDCCH command. If the reference cell or reference TRP is not configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the cell or TRP that sends the PDCCH command.
  • this parameter may not be configured if the RRC signaling is configured in step 1. If this parameter is present, the terminal determines the cells or TRPs participating in coordinated transmission based on the cells or TRPs participating in coordinated transmission indicated by the RRC signaling or PDCCH command.
  • Step 3 After the coordinated transmission resource takes effect, the terminal descrambles the downlink transmission data based on the physical layer resources and transmission format allocated for the coordinated transmission resource on each coordinated transmission resource, or scrambles the uplink transmission data based on the identifier if the RRC signaling indicates an identifier for scrambling the coordinated transmission.
  • the timing synchronization relationship of the downlink transmission or uplink transmission is determined based on the timing synchronization relationship between the network node associated with the physical resource allocated for the coordinated transmission and the terminal, and the network node is specifically a reference cell or reference TRP indicated by the RRC signaling or PDCCH command, or a cell or TRP that sends the RRC signaling or PDCCH command.
  • Example 4 RRC signaling pre-configures the coordinated transmission resources, the PDCCH command activates the coordinated transmission resources, and the coordinated transmission resources take effect once or for a specified number of times.
  • Step 1 The base station sends RRC signaling to the terminal to pre-configure cooperative transmission resources.
  • the base station side node that sends the RRC signaling is any of the following:
  • a specific cell such as a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the RRC signaling includes one or more of the following information:
  • a pre-configured resource type indication indicating that the currently configured pre-configured resource is a resource for cooperative transmission (optional);
  • An identifier used to scramble the collaborative transmission resources such as x-RNTI, and a network-side high-layer identifier (optional).
  • Step 2 The base station sends a PDCCH command to the terminal to activate the pre-configured coordinated transmission resources.
  • the base station side node that sends the PDCCH command is any of the following:
  • a specific cell such as a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the PDCCH command for activating the pre-configured coordinated transmission resources includes one or more of the following information:
  • Physical layer resource allocation of coordinated transmission resources including time-frequency resource allocation, and/or transmission mode (MCS, RV), etc. (mandatory);
  • this parameter may not be configured.
  • Step 3 The cell or TRP participating in the coordinated transmission on the base station side sends downlink transmission or receives uplink transmission according to the physical layer resources and transmission format allocated by the coordinated transmission resources at the time when each coordinated transmission resource takes effect.
  • 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 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.
  • Step 1 Receive RRC signaling of pre-configured coordinated transmission resources sent by the base station side.
  • the RRC signaling is received at any of the following base station side nodes:
  • the terminal receives the RRC signaling in a specific cell, where the specific cell is a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the terminal receives the RRC signaling in any cell or TRP currently connected, or the DU/DDU connected by the TRP;
  • the terminal receives the RRC signaling from the source cell or source TRP that can perform collaborative transmission, or the DU/DDU connected to the source TRP.
  • the RRC signaling includes one or more of the following information, and the corresponding operations of the terminal include:
  • the terminal determines that there are N consecutive pre-configured resources in each coordinated transmission resource period starting from the start time of each coordinated transmission resource;
  • a pre-configured resource type indication indicating that the currently configured pre-configured resource is a resource for cooperative transmission (optional);
  • Identifier used for scrambling collaborative transmission such as x-RNTI, network side high-layer identifier (optional).
  • Step 2 Receive the PDCCH command sent by the base station to the terminal, and activate the pre-configured coordinated transmission resources.
  • the base station side node that sends the PDCCH command is any of the following:
  • the terminal receives the PDCCH command in a specific cell, which is a primary cell under CA, a primary cell of a primary base station under DC, a primary cell of a secondary base station under DC, or a primary cell in a TAG;
  • the terminal receives the PDCCH command in any cell or TRP currently connected, or in the DU/DDU connected by the TRP;
  • the terminal receives the PDCCH command from the source cell or source TRP that can perform collaborative transmission, or the DU/DDU connected to the source TRP.
  • 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:
  • deltaT (optional, mutually exclusive with a)) of the time when the coordinated transmission resource takes effect relative to the time when the PDCCH command is sent.
  • the terminal determines the actual time when the coordinated transmission resource takes effect based on this parameter;
  • the terminal determines that there are N consecutive pre-configured resources in each coordinated transmission resource period based on the number of pre-configured resources indicated in the RRC signaling or PDCCH command;
  • the number of times the coordinated transmission resource is effective K (optional). This parameter may not be configured if the RRC signaling is configured in step 1. Based on the coordinated transmission resource period configured by RRC signaling and the number of times the coordinated transmission resource is effective K indicated in the RRC signaling or PDCCH command, it is determined that the coordinated transmission resource is effective within K periods, as well as the period value.
  • the terminal determines the actual physical layer resource allocation of each pre-configured resource in each cooperative transmission resource period, including the time-frequency resource location, transmission format MCS, RV, etc.;
  • Reference cell or reference TRP (optional). This parameter may not be configured if the RRC signaling has been configured in step 1.
  • the terminal determines the actual physical layer resource allocation of the coordinated transmission resources in combination with e) and f).
  • the actual physical layer resource allocation is associated with the uplink and downlink resource configuration of a specific cell or TRP. If the base station indicates the reference cell or reference TRP by RRC signaling or PDCCH command, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the reference cell or reference TRP indicated by the RRC signaling or PDCCH command. If the reference cell or reference TRP is not configured, the terminal determines the actual physical layer resource allocation of the coordinated transmission resources based on the uplink and downlink resource configuration of the cell or TRP that sends the PDCCH command.
  • this parameter may not be configured if the RRC signaling is configured in step 1. If this parameter is present, the terminal determines the cells or TRPs participating in coordinated transmission based on the cells or TRPs participating in coordinated transmission indicated by the RRC signaling or PDCCH command.
  • Step 3 After the coordinated transmission resource is activated, the terminal descrambles the downlink transmission data based on the physical layer resources and transmission format allocated for the coordinated transmission resource on each coordinated transmission resource, or scrambles the uplink transmission data based on the identifier if the RRC signaling indicates an identifier for scrambling the coordinated transmission.
  • the timing synchronization relationship of the downlink transmission or uplink transmission is determined according to the timing synchronization relationship between the network node associated with the physical resource allocated for the coordinated transmission and the terminal.
  • the network node is specifically a reference cell or reference TRP indicated by the RRC signaling or PDCCH command, or a cell or TRP that sends the RRC signaling or PDCCH command.
  • Examples 1 to 4 different cells or TRPs participating in the coordinated transmission need to notify each other of the pre-configured coordinated transmission resources and/or the activation information of the coordinated transmission resources.
  • the specific notification method is any of the following:
  • the pre-configuration information and/or activation information of the coordinated transmission resources are exchanged through the interface between the DUs/DDUs;
  • the CU/CCU exchanges the pre-configuration information and/or activation information of the coordinated transmission resources through the interface between the CU/CCU and the DU/DDU (similar to the F1 interface of 5G);
  • the pre-configuration information and/or activation information of the collaborative transmission resources are exchanged through the interface between base stations (similar to the Xn interface of 5G).
  • the methods and devices provided in the various embodiments of the present disclosure are based on the same application concept. Since the methods and devices solve problems based on similar principles, the implementation of the devices and methods can refer to each other, and the repeated parts will not be repeated.
  • FIG4 is a schematic diagram of the structure of a terminal provided in an embodiment of the present disclosure.
  • the terminal includes a memory 420 , a transceiver 410 , and a processor 400 ; wherein the processor 400 and the memory 420 may also be arranged physically separately.
  • 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.
  • the transceiver 410 is used to receive and send data under the control of the processor 400 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 400 and various circuits of memory represented by memory 420 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits together, which are all well known in the art, and therefore, the present disclosure will not further describe them.
  • the bus interface provides an interface.
  • the transceiver 410 can be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, and these transmission media include transmission media such as wireless channels, wired channels, and optical cables.
  • the user interface 430 can also be an interface that can be connected to external and internal devices, and the connected devices include but are not limited to keypads, displays, speakers, microphones, joysticks, etc.
  • the processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 can store data used by the processor 400 when performing operations.
  • the processor 400 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD).
  • the processor can also adopt a multi-core architecture.
  • the processor 400 calls the computer program stored in the memory 420 to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions, for example: receiving radio resource control RRC signaling sent by the first network node, the RRC signaling is used to pre-configure cooperative transmission resources; based on the cooperative transmission resources, receiving or sending data.
  • RRC signaling sent by the first network node
  • the RRC signaling is used to pre-configure cooperative transmission resources
  • the RRC signaling includes one or more of the following information:
  • An identifier used to scramble cooperative transmissions is an identifier used to scramble cooperative transmissions.
  • the first network node includes any of the following:
  • the primary cell of the primary base station in dual-connection DC is the primary cell of the primary base station in dual-connection DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the method further comprises:
  • a physical downlink control channel PDCCH command sent by the second network node is received, where the PDCCH command is used to activate the coordinated transmission resource.
  • the PDCCH order includes one or more of the following information:
  • the second network node includes any of the following:
  • the primary cell under CA The primary cell under CA;
  • the primary cell of the primary base station under DC is the primary cell of the primary base station under DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the primary cell in TAG is the primary cell in TAG
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the method further comprises:
  • the sending time or receiving time of RRC signaling or
  • the sending time or receiving time of the PDCCH command for activating the coordinated transmission resources or
  • the time indicated by the validity time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource is the time indicated by the validity time information of the coordinated transmission resource in the PDCCH command used to activate the coordinated transmission resource.
  • the method further comprises:
  • the third network node when the physical layer resources of the coordinated transmission resources are allocated by RRC signaling, the third network node is the first network node, or is the reference network node indicated in the RRC signaling; or, when the physical layer resources of the coordinated transmission resources are allocated by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or is the reference network node indicated in the RRC signaling, or is the reference network node indicated in the PDCCH command.
  • the method further comprises:
  • the third network node is determined as a timing synchronization reference network node.
  • the validity time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • the cooperative transmission resource is a resource that is valid periodically, or a resource that is valid once, or a resource that is valid a specified number of times.
  • FIG5 is a schematic diagram of the structure of a first network node provided in an embodiment of the present disclosure.
  • 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 arranged physically separately.
  • the memory 520 is used to store computer programs; the transceiver 510 is used to send and receive data under the control of the processor 500.
  • the transceiver 510 is used to receive and send data under the control of the processor 500 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 500 and various circuits of memory represented by memory 520 are linked together.
  • the bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described in this disclosure.
  • the bus interface provides an interface.
  • the transceiver 510 may be a plurality of components, including a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which may include a wireless channel, a wired channel, an optical cable, and other transmission media.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.
  • the processor 500 may be a CPU, an ASIC, an FPGA or a CPLD, and the processor may also adopt a multi-core architecture.
  • the processor 500 calls the computer program stored in the memory 520 to execute any of the methods provided in the embodiments of the present disclosure according to the obtained executable instructions, for example: sending radio resource control RRC signaling to the terminal, the RRC signaling is used to pre-configure cooperative transmission resources.
  • the RRC signaling includes one or more of the following information:
  • An identifier used to scramble cooperative transmissions is an identifier used to scramble cooperative transmissions.
  • the method further comprises:
  • a physical downlink control channel PDCCH command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resources.
  • the PDCCH order includes one or more of the following information:
  • the method further comprises:
  • Pre-configuration information of cooperative transmission resources and/or activation information of cooperative transmission resources are exchanged with other network nodes participating in cooperative transmission through interfaces between distributed data units, interfaces between central control plane nodes and distributed data units, or interfaces between base stations.
  • the method further comprises:
  • the sending time or receiving time of RRC signaling or
  • the sending time or receiving time of the PDCCH command for activating the coordinated transmission resources or
  • the method further comprises:
  • the third network node when the physical layer resources of the coordinated transmission resources are allocated by RRC signaling, the third network node is the first network node, or is the reference network node indicated in the RRC signaling; or, when the physical layer resources of the coordinated transmission resources are allocated by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or is the reference network node indicated in the RRC signaling, or is the reference network node indicated in the PDCCH command.
  • the method further comprises:
  • the third network node is determined as a timing synchronization reference network node.
  • the effective time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • the cooperative transmission resource is a resource that is valid periodically, or a resource that is valid once, or a resource that is valid a specified number of times.
  • the first network node includes any of the following:
  • the primary cell of the primary base station in dual-connection DC is the primary cell of the primary base station in dual-connection DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the above-mentioned terminal and the first network node provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect.
  • the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.
  • FIG6 is a schematic diagram of the structure of a data transmission device provided in an embodiment of the present disclosure. As shown in FIG6 , the device includes:
  • the receiving unit 600 is configured to receive a radio resource control RRC signaling sent by a first network node, where the RRC signaling is used to pre-configure cooperative transmission resources;
  • the transmission unit 610 is configured to receive or send data based on the coordinated transmission resources.
  • the RRC signaling includes one or more of the following information:
  • An identifier used to scramble cooperative transmissions is an identifier used to scramble cooperative transmissions.
  • the first network node includes any of the following:
  • the primary cell of the primary base station in dual-connection DC is the primary cell of the primary base station in dual-connection DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the receiving unit 600 is further configured to:
  • a physical downlink control channel PDCCH command sent by the second network node is received, where the PDCCH command is used to activate the coordinated transmission resource.
  • the PDCCH order includes one or more of the following information:
  • the second network node includes any of the following:
  • the primary cell under CA The primary cell under CA;
  • the primary cell of the primary base station under DC is the primary cell of the primary base station under DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the primary cell in TAG is the primary cell in TAG
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • the apparatus further comprises:
  • the sending time or receiving time of RRC signaling or
  • the sending time or receiving time of the PDCCH command for activating the coordinated transmission resources or
  • the apparatus further comprises:
  • a second determining unit configured to determine a coordinated transmission resource based on a resource configuration of a third network node
  • the third network node when the physical layer resources of the coordinated transmission resources are allocated by RRC signaling, the third network node is the first network node, or is the reference network node indicated in the RRC signaling; or, when the physical layer resources of the coordinated transmission resources are allocated by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or is the reference network node indicated in the RRC signaling, or is the reference network node indicated in the PDCCH command.
  • the apparatus further comprises:
  • the third determining unit is configured to determine the third network node as a timing synchronization reference network node.
  • the effective time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • the cooperative transmission resource is a resource that is valid periodically, or a resource that is valid once, or a resource that is valid a specified number of times.
  • FIG. 7 is a schematic diagram of the structure of a coordinated transmission resource allocation device provided in an embodiment of the present disclosure. As shown in FIG. 7 , the device includes:
  • the sending unit 700 is used to send radio resource control RRC signaling to the terminal, where the RRC signaling is used to pre-configure cooperative transmission resources.
  • the RRC signaling includes one or more of the following information:
  • An identifier used to scramble cooperative transmissions is an identifier used to scramble cooperative transmissions.
  • the sending unit 700 is further configured to:
  • a physical downlink control channel PDCCH command is sent to the terminal, where the PDCCH command is used to activate the coordinated transmission resources.
  • the PDCCH order includes one or more of the following information:
  • the apparatus further comprises:
  • An interaction unit is used to interact with other network nodes participating in the collaborative transmission through interfaces between distributed data units, interfaces between central control plane nodes and distributed data units, or interfaces between base stations to exchange pre-configuration information of collaborative transmission resources and/or activation information of collaborative transmission resources.
  • the apparatus further comprises:
  • the sending time or receiving time of RRC signaling or
  • the sending time or receiving time of the PDCCH command for activating the coordinated transmission resources or
  • the apparatus further comprises:
  • a fifth determining unit configured to determine the coordinated transmission resource based on the resource configuration of the third network node
  • the third network node when the physical layer resources of the coordinated transmission resources are allocated by RRC signaling, the third network node is the first network node, or is the reference network node indicated in the RRC signaling; or, when the physical layer resources of the coordinated transmission resources are allocated by a PDCCH command used to activate the coordinated transmission resources, the third network node is the network node that sends the PDCCH command, or is the reference network node indicated in the RRC signaling, or is the reference network node indicated in the PDCCH command.
  • the apparatus further comprises:
  • the sixth determining unit is configured to determine the third network node as the timing synchronization reference network node.
  • the effective time information of the coordinated transmission resource includes:
  • the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information is the time deviation of the absolute effective time of the coordinated transmission resource relative to the sending time of the effective time information.
  • the cooperative transmission resource is a resource that is valid periodically, or a resource that is valid once, or a resource that is valid a specified number of times.
  • the first network node includes any of the following:
  • the primary cell of the primary base station in dual-connection DC is the primary cell of the primary base station in dual-connection DC
  • the primary cell of the secondary base station under DC is the primary cell of the secondary base station under DC
  • the distributed data unit to which any TRP to which the terminal is currently connected;
  • each functional unit in each embodiment of the present disclosure may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium.
  • the technical solution of the present disclosure is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present disclosure.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.
  • an embodiment of the present disclosure further provides a non-transitory readable storage medium, wherein the non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the methods provided in the above embodiments.
  • non-transitory readable storage medium provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect.
  • the parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.
  • the non-transitory readable storage medium can be any available medium or data storage device that can be accessed by a computer, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.
  • magnetic storage such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.
  • optical storage such as CD, DVD, BD, HVD, etc.
  • semiconductor storage such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)
  • the applicable systems can be global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G new radio (NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD LTE frequency division duplex
  • TDD LTE time division duplex
  • LTE-A long term evolution advanced
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • NR new radio
  • EPS Evolved Packet System
  • 5GS 5G System
  • the terminal involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem.
  • the name of the terminal may also be different.
  • the terminal may be called a user equipment (UE).
  • a wireless terminal device may communicate with one or more core networks (CN) via a radio access network (RAN).
  • the wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device, for example, a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges language and/or data with a radio access network.
  • Wireless terminal devices may also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, access points, remote terminal devices, access terminal devices, user terminal devices, user agents, and user devices, which are not limited in the embodiments of the present disclosure.
  • the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.
  • a computer-usable storage media including but not limited to disk storage and optical storage, etc.
  • each process and/or box in the flowchart and/or block diagram, as well as the combination of the process and/or box in the flowchart and/or block diagram can be implemented by computer executable instructions.
  • These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one process or multiple processes in the flowchart and/or one box or multiple boxes in the block diagram.
  • processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.
  • processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente divulgation concerne un procédé et un appareil de transmission de données, un procédé et un appareil d'attribution de ressources de transmission coopérative, ainsi qu'un dispositif. Le procédé de transmission de données comprend les étapes suivantes : un terminal reçoit une signalisation de commande de ressources radio (RRC) envoyée par un premier nœud de réseau, la signalisation RRC étant utilisée pour préconfigurer des ressources de transmission coopératives ; et sur la base des ressources de transmission coopératives, recevoir ou envoyer des données.
PCT/CN2024/133490 2023-11-30 2024-11-21 Procédé et appareil de transmission de données, procédé et appareil d'attribution de ressources de transmission coopérative, et dispositif Pending WO2025113308A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202311630497.0 2023-11-30
CN202311630497.0A CN120076019A (zh) 2023-11-30 2023-11-30 数据传输方法、协同传输资源分配方法、设备及装置

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WO2025113308A1 true WO2025113308A1 (fr) 2025-06-05

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112534758A (zh) * 2018-08-03 2021-03-19 Oppo广东移动通信有限公司 一种数据传输方法、终端设备、网络设备及存储介质
US20220217690A1 (en) * 2019-09-25 2022-07-07 Huawei Technologies Co., Ltd. Communication method and apparatus
CN115866583A (zh) * 2021-09-23 2023-03-28 华为技术有限公司 通信方法及相关装置
WO2023155645A1 (fr) * 2022-02-17 2023-08-24 大唐移动通信设备有限公司 Procédé et appareil de transmission, dispositif et support de stockage lisible

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112534758A (zh) * 2018-08-03 2021-03-19 Oppo广东移动通信有限公司 一种数据传输方法、终端设备、网络设备及存储介质
US20220217690A1 (en) * 2019-09-25 2022-07-07 Huawei Technologies Co., Ltd. Communication method and apparatus
CN115866583A (zh) * 2021-09-23 2023-03-28 华为技术有限公司 通信方法及相关装置
WO2023155645A1 (fr) * 2022-02-17 2023-08-24 大唐移动通信设备有限公司 Procédé et appareil de transmission, dispositif et support de stockage lisible

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