WO2024067164A1 - 相干联合传输方法及装置 - Google Patents

相干联合传输方法及装置 Download PDF

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Publication number
WO2024067164A1
WO2024067164A1 PCT/CN2023/119122 CN2023119122W WO2024067164A1 WO 2024067164 A1 WO2024067164 A1 WO 2024067164A1 CN 2023119122 W CN2023119122 W CN 2023119122W WO 2024067164 A1 WO2024067164 A1 WO 2024067164A1
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Prior art keywords
target
tci state
joint transmission
coherent joint
state information
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PCT/CN2023/119122
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English (en)
French (fr)
Inventor
李辉
高秋彬
苏昕
骆亚娟
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大唐移动通信设备有限公司
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Publication of WO2024067164A1 publication Critical patent/WO2024067164A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a coherent joint transmission method and device.
  • Multi-transmitting and receiving node (multi-TRP) transmission technology is an important technical means to improve cell edge coverage and provide more balanced service quality within the service area.
  • the current 5G NR (New Radio) system supports multi-point coordinated PDSCH (Physical Downlink Shared Channel) transmission technology.
  • TRPs Transmission/Receiption Points
  • multiple TRPs can be used for coherent joint transmission, that is, the same data stream can be transmitted from multiple TRPs simultaneously.
  • existing communication systems do not support coherent joint transmission in multi-TRP scenarios.
  • the embodiments of the present disclosure provide a coherent joint transmission method and device to address the defect of related technologies that coherent joint transmission in a multi-TRP scenario is not supported, and to achieve coherent joint transmission of data in a multi-TRP scenario to improve the data transmission performance of the communication system.
  • an embodiment of the present disclosure provides a coherent joint transmission method, which is applied to a terminal.
  • the method includes:
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1.
  • the method when N is 2, before the coherent joint transmission of data based on the TCI state information, the method further includes: receiving a second DCI signaling sent by the network device;
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, where the first information field is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and a value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • CDM groups of a demodulation reference signal DMRS indicated by the second DCI signaling is greater than 2, and the number of CDM groups of the DMRS is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a second information field, where the second information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states;
  • the preset values of one or more designated information fields included in the second DCI signaling are used to indicate coherent joint transmission of data based on the target TCI state information.
  • the method when N is 2, before the coherent joint transmission of data based on the target TCI state information, the method further includes:
  • the quasi-co-site QCL types that determine the two target TCI states are different.
  • the method when N is 2, before the coherent joint transmission of data based on the target TCI state information, the method further includes:
  • Receive high-level signaling sent by the network device is used to indicate coherent joint transmission of data based on the target TCI state information.
  • the coherent joint transmission of data based on the target TCI state information includes at least one of the following:
  • M is a positive integer less than N; the target channel is a channel other than the physical downlink shared channel PDSCH.
  • the method when N is greater than 2, before the coherent joint transmission of data based on the target TCI state information, the method further includes:
  • the third information field is also used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of the N target TCI states, and the target channel is a channel other than PDSCH.
  • the QCL type of the M second TCI states is different from the QCL type of the remaining N-M target TCI states among the N target TCI states.
  • the QCL types of the NM target TCI states include at least one of QCL type B or QCL type C.
  • an embodiment of the present disclosure further provides a coherent joint transmission method, which is applied to a network device, and the method includes:
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1.
  • the method when N is 2, before the coherent joint transmission of data based on the TCI state information, the method further includes: sending a second DCI signaling to the terminal;
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, where the first information field is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and a value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • CDM groups of a demodulation reference signal DMRS indicated by the second DCI signaling is greater than 2, and the number of CDM groups of the DMRS is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a second information field, where the second information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states;
  • the preset values of one or more specified information fields included in the second DCI signaling are used to indicate the base Coherent joint transmission of data is performed based on the target TCI state information.
  • the method when N is 2, before the coherent joint transmission of data based on the target TCI state information, the method further includes:
  • the quasi-co-site QCL types that determine the two target TCI states are different.
  • the method when N is 2, before the coherent joint transmission of data based on the target TCI state information, the method further includes:
  • the terminal is instructed to perform coherent joint transmission of data based on the target TCI state information through high-layer signaling.
  • the coherent joint transmission of data based on the target TCI state information includes at least one of the following:
  • M is a positive integer less than N; the target channel is a channel other than the physical downlink shared channel PDSCH.
  • the method when N is greater than 2, before the coherent joint transmission of data based on the target TCI state information, the method further includes:
  • a second DCI signaling is sent to the terminal, where the second DCI signaling includes a third information field, where the third information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states.
  • the third information field is also used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of the N target TCI states, and the target channel is a channel other than PDSCH.
  • the QCL types of the M second TCI states are the same as the N target
  • the remaining NM target TCI states in the target TCI state have different QCL types.
  • the QCL types of the N-M target TCI states include at least one of QCL type B or QCL type C.
  • an embodiment of 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:
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1.
  • the processor when N is 2, before the coherent joint transmission of data based on the TCI state information, the processor is further configured to: receive second DCI signaling sent by the network device;
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, where the first information field is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and a value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the number of code division multiplexing (CDM) groups of the demodulation reference signal DMRS indicated by the second DCI signaling is greater than In 2, the CDM group number of the DMRS is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a second information field, where the second information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states;
  • the preset values of one or more designated information fields included in the second DCI signaling are used to indicate coherent joint transmission of data based on the target TCI state information.
  • the processor when N is 2, before the coherent joint transmission of data based on the target TCI state information, the processor is further configured to:
  • the quasi-co-site QCL types that determine the two target TCI states are different.
  • the processor when N is 2, before the coherent joint transmission of data based on the target TCI state information, the processor is further configured to:
  • Receive high-level signaling sent by the network device is used to indicate coherent joint transmission of data based on the target TCI state information.
  • the coherent joint transmission of data based on the target TCI state information includes at least one of the following:
  • M is a positive integer less than N; the target channel is a channel other than the physical downlink shared channel PDSCH.
  • the processor when N is greater than 2, before the coherent joint transmission of data based on the target TCI state information, the processor is further configured to:
  • the third information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states.
  • the third information field is also used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of the N target TCI states, and the target channel is a channel other than PDSCH.
  • the QCL type of the M second TCI states is different from the QCL type of the remaining N-M target TCI states among the N target TCI states.
  • the QCL types of the N-M target TCI states include at least one of QCL type B or QCL type C.
  • an embodiment of the present disclosure further provides a network device, 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:
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1.
  • the processor when N is 2, before the coherent joint transmission of data based on the TCI state information, the processor is further configured to: send a second DCI signaling to the terminal;
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, where the first information field is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate the
  • the target TCI state information performs coherent joint transmission of data
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and a value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • CDM groups of a demodulation reference signal DMRS indicated by the second DCI signaling is greater than 2, and the number of CDM groups of the DMRS is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a second information field, where the second information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states;
  • the preset values of one or more designated information fields included in the second DCI signaling are used to indicate coherent joint transmission of data based on the target TCI state information.
  • the processor when N is 2, before the coherent joint transmission of data based on the target TCI state information, the processor is further configured to:
  • the quasi-co-site QCL types that determine the two target TCI states are different.
  • the processor when N is 2, before the coherent joint transmission of data based on the target TCI state information, the processor is further configured to:
  • the terminal is instructed to perform coherent joint transmission of data based on the target TCI state information through high-layer signaling.
  • the coherent joint transmission of data based on the target TCI state information includes at least one of the following:
  • M is a positive integer less than N; the target channel is a channel other than the physical downlink shared channel PDSCH.
  • the processor when N is greater than 2, before the coherent joint transmission of data based on the target TCI state information, the processor is further configured to:
  • a second DCI signaling is sent to the terminal, where the second DCI signaling includes a third information field, where the third information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states.
  • the third information field is also used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of the N target TCI states, and the target channel is a channel other than PDSCH.
  • the QCL type of the M second TCI states is different from the QCL type of the remaining N-M target TCI states among the N target TCI states.
  • the QCL types of the N-M target TCI states include at least one of QCL type B or QCL type C.
  • an embodiment of the present disclosure further provides a coherent joint transmission device, applied to a terminal, the device comprising:
  • a receiving module used to receive a media access control unit MAC-CE signaling or a first downlink control information DCI signaling sent by a network device, wherein the MAC-CE signaling or the first DCI signaling is used to indicate target transmission configuration indication TCI state information;
  • a transmission module configured to perform coherent joint transmission of data based on the target TCI state information
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1.
  • the receiving module when N is 2, before the coherent joint transmission of data based on the TCI state information, the receiving module is further used to: receive a second DCI signaling sent by the network device;
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, where the first information field is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and a value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • CDM groups of a demodulation reference signal DMRS indicated by the second DCI signaling is greater than 2, and the number of CDM groups of the DMRS is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a second information field, where the second information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states;
  • the preset values of one or more designated information fields included in the second DCI signaling are used to indicate coherent joint transmission of data based on the target TCI state information.
  • the transmission module when N is 2, before the coherent joint transmission of data based on the target TCI state information, the transmission module is further used to:
  • the quasi-co-site QCL types that determine the two target TCI states are different.
  • the receiving module when N is 2, before the coherent joint transmission of data based on the target TCI state information, the receiving module is further used to:
  • Receive high-level signaling sent by the network device is used to indicate coherent joint transmission of data based on the target TCI state information.
  • the transmission module is specifically configured to perform at least one of the following:
  • M is a positive integer less than N; the target channel is a channel other than the physical downlink shared channel PDSCH.
  • the receiving module when N is greater than 2, before the coherent joint transmission of data based on the target TCI state information, the receiving module is further used to:
  • the third information field is also used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of the N target TCI states, and the target channel is a channel other than PDSCH.
  • the QCL type of the M second TCI states is different from the QCL type of the remaining N-M target TCI states among the N target TCI states.
  • the QCL types of the N-M target TCI states include at least one of QCL type B or QCL type C.
  • an embodiment of the present disclosure further provides a coherent joint transmission device, applied to a network device, the device comprising:
  • a sending module used to send a media access control unit MAC-CE signaling or a first downlink control information DCI signaling to the terminal, where the MAC-CE signaling or the first DCI signaling is used to indicate target transmission configuration indication TCI state information;
  • a transmission module configured to perform coherent joint transmission of data based on the target TCI state information
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1.
  • the sending module is further used to: send a second DCI signaling to the terminal;
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, where the first information field is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and a value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • CDM groups of a demodulation reference signal DMRS indicated by the second DCI signaling is greater than 2, and the number of CDM groups of the DMRS is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a second information field, where the second information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states;
  • the preset values of one or more designated information fields included in the second DCI signaling are used to indicate coherent joint transmission of data based on the target TCI state information.
  • the transmission module when N is 2, before the coherent joint transmission of data based on the target TCI state information, the transmission module is further used to:
  • the quasi-co-site QCL types that determine the two target TCI states are different.
  • the sending module when N is 2, before the coherent joint transmission of data based on the target TCI state information, the sending module is further used to:
  • the terminal is instructed to perform coherent joint transmission of data based on the target TCI state information through high-layer signaling.
  • the transmission module is specifically configured to perform at least one of the following:
  • M is a positive integer less than N; the target channel is a channel other than the physical downlink shared channel PDSCH.
  • the sending module when N is greater than 2, before the coherent joint transmission of data based on the target TCI state information, the sending module is further used to:
  • a second DCI signaling is sent to the terminal, where the second DCI signaling includes a third information field, where the third information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states.
  • the third information field is also used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of the N target TCI states, and the target channel is a channel other than PDSCH.
  • the QCL type of the M second TCI states is different from the QCL type of the remaining N-M target TCI states among the N target TCI states.
  • the QCL types of the N-M target TCI states include at least one of QCL type B or QCL type C.
  • an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, wherein the computer program is used to enable the processor to execute the method of the first aspect as described above, or to execute the method of the second aspect as described above.
  • the coherent joint transmission method and apparatus provided in the embodiments of the present disclosure indicate the target TCI status information to the terminal through MAC-CE signaling or DCI signaling, so that the terminal and the network device can realize coherent joint transmission of data in a multi-TRP scenario based on multiple target TCI states in the target TCI status information, thereby improving the data transmission performance and flexibility of the communication system.
  • FIG1 is a schematic diagram of a flow chart of a coherent joint transmission method provided by an embodiment of the present disclosure
  • FIG2 is a second flow chart of the coherent joint transmission method provided in an embodiment of the present disclosure.
  • FIG3 is a schematic diagram of the structure of a terminal provided in an embodiment of the present disclosure.
  • FIG4 is a schematic diagram of the structure of a network device provided in an embodiment of the present disclosure.
  • FIG5 is a schematic diagram of a structure of a coherent joint transmission device according to an embodiment of the present disclosure.
  • FIG. 6 is a second schematic diagram of the structure of the coherent joint transmission 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 embodiments of the present disclosure provide a coherent joint transmission method and apparatus to implement coherent joint transmission of data in a multi-TRP scenario.
  • the method and the device are based on the same application concept. Since the method and the device solve the problem in a similar principle, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.
  • the current 5G NR system supports multi-point coordinated PDSCH transmission technology, including the following solutions:
  • the SDM Space Division Multiplex transmission scheme of PDSCH, in which two different data streams of PDSCH are sent simultaneously from two TRPs, occupying the same time-frequency resources;
  • the FDM (Frequency Division Multiplex) transmission scheme of PDSCH which further improves the performance of URLLC (Ultra-Reliable Low-Latency Communication) transmission by repeatedly transmitting PDSCH in the frequency domain;
  • URLLC Ultra-Reliable Low-Latency Communication
  • the TDM (Time Division Multiplex) transmission scheme of PDSCH (including TDM within a time slot and TDM between time slots) further improves the performance of URLLC transmission by repeatedly transmitting PDSCH in the time domain.
  • FIG1 is a flow chart of a coherent joint transmission method provided by an embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a coherent joint transmission method, the execution subject of which may be a terminal, such as a mobile phone.
  • the method includes:
  • Step 110 Receive a MAC-CE (Media Access Control Control Element) signaling or a first DCI (Downlink Control Information) signaling sent by a network device, where the MAC-CE signaling or the first DCI signaling is used to indicate target TCI (Transmission Configuration Indicator) status information;
  • MAC-CE Media Access Control Control Element
  • DCI Downlink Control Information
  • Step 120 performing coherent joint transmission of data based on target TCI state information
  • the target TCI state information includes N target TCI states, where the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; and N is a positive integer greater than 1.
  • the terminal may receive MAC-CE signaling sent by the network device, and the MAC-CE signaling may activate one or more groups of TCI status information.
  • Table 1 is an example of a group of TCI status information activated by MAC-CE signaling.
  • a group of TCI status information activated by MAC-CE signaling includes 8 TCI status information, wherein each code point corresponds to a TCI status information, and each TCI status information corresponds to 1 or 2 (or more, Table 1 is only for example) target TCI states.
  • the target TCI state is an uplink and downlink joint TCI state
  • the target TCI state can be either It can be used for downlink transmission as well as uplink transmission.
  • the terminal can still determine which of the TCI state information in the group is used as the target TCI state information by receiving the MAC-CE sent by the network device.
  • the MAC-CE may be the same as the MAC-CE that activates one or more groups of TCI state information, or it may be a dedicated MAC-CE sent by the network device to the terminal.
  • the terminal may also determine which one of the TCI state information in the group is used as the target TCI state information by receiving the first DCI signaling sent by the network device.
  • the first DCI signaling can select a code point from the activated TCI state information group according to the value of the TCI indication field to indicate the TCI state. For example, if the value in the TCI indication field corresponds to code point P3, the network device indicates to the terminal the target TCI state information including two target TCI states TCI_7 and TCI_9.
  • the terminal will directly perform coherent joint transmission of data based on the single target TCI state in the target TCI state information.
  • the network device When the target TCI state information indicated by the MAC-CE or the first DCI includes two or more target TCI states, the network device will further instruct the terminal whether to perform coherent joint transmission of data based on the target TCI state information, and/or specifically based on which target TCI states in the target TCI state information to perform coherent joint transmission of data.
  • the network device and the terminal may also perform coherent joint transmission of data based on the target TCI state information in a predetermined manner.
  • step 120 after determining the target TCI state information, the terminal will perform coherent joint transmission of data with the network device based on the target TCI state information. That is, the terminal will use multiple TRPs to simultaneously transmit the same data stream with the network device based on multiple target TCI states in the target TCI state information.
  • one target TCI state can correspond to one TRP.
  • multiple target TCI states are used for coherent joint transmission, coherent joint transmission of data in a multi-TRP scenario can be achieved.
  • the coherent joint transmission method provided in the embodiment of the present disclosure indicates the target TCI state information to the terminal through MAC-CE signaling or DCI signaling, so that the terminal and the network device can realize coherent joint transmission of data in a multi-TRP scenario based on multiple target TCI states in the target TCI state information, thereby improving the data transmission performance and flexibility of the communication system.
  • the network device when N is 2, that is, when the target TCI state information includes 2 target TCI states, the network device is required to further instruct the terminal whether to perform coherent joint transmission of data based on the target TCI state information, and/or specifically based on which target TCI states in the target TCI state information to perform coherent joint transmission of data. Therefore, before step 120, the coherent joint transmission method provided in the embodiment of the present disclosure may also include:
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, where the first information field is used to indicate coherent joint transmission of data based on target TCI state information.
  • the second DCI signaling may include a first information field, and the first information field may be used to explicitly instruct the terminal to perform coherent joint transmission based on the target TCI state information.
  • the value of the first information field can be used to indicate whether coherent joint transmission is adopted.
  • An information field may use a 1-bit width, and when the value of the first information field is "0", it indicates that coherent joint transmission is not adopted, and when the value of the first information field is "1", it indicates that coherent joint transmission is adopted.
  • the value of the first information field is "1”, it indicates that coherent joint transmission is not adopted, and when the value of the first information field is "0", it indicates that coherent joint transmission is adopted.
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate coherent joint transmission of data based on the target TCI state information.
  • the time domain resource assignment field (TDRA) in the second DCI signaling can be used to indicate whether to perform coherent joint transmission of data based on the target TCI state information.
  • the time domain resource assignment field corresponds to a resource allocation parameter list, as shown in Table 2.
  • Each row in Table 2 corresponds to a set of parameter values, including time slot offset, starting symbol and length, PDSCH mapping type and number of repetitions, etc.
  • the resource allocation parameter list is configured by the high-level parameter RRC or predefined by the system. It should be noted that the "XXX" involved in the table in this article indicates that the relevant parameter values have been given by the relevant standard protocol and will not be introduced in detail in the embodiments of this disclosure.
  • the value of the number of repetitions in the resource allocation parameter list may be specifically used to indicate whether coherent joint transmission of data is performed based on the target TCI state information.
  • the target TCI state information corresponding to this row is used for coherent joint transmission.
  • Table 2 when the value of the time domain resource allocation field corresponds to code point P1, coherent joint transmission is performed based on the target TCI state information. When it corresponds to other code points, coherent joint transmission is not used.
  • the number of repetitions may also be configured to be 2, 8, 4, etc. before joint coherent transmission is performed.
  • the embodiments of the present disclosure do not specifically limit this.
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and the value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • a target parameter may be introduced into the resource allocation parameter list corresponding to the time domain resource allocation domain, as shown in Table 3, and based on the value of the target parameter, it is indicated whether coherent joint transmission of data is performed based on the target TCI state information.
  • the target parameter value of 0 indicates that coherent joint transmission is not used, and the target parameter value of 1 indicates that coherent joint transmission is used. For example, when the value of the time domain resource allocation field corresponds to code point P2 or P3, coherent joint transmission is used. When it corresponds to code point P1 or P4, coherent joint transmission is not used.
  • the target parameter value may be set to 1 to indicate that coherent joint transmission is not adopted, and set to 0 to indicate that coherent joint transmission is adopted. This embodiment of the present disclosure does not specifically limit this.
  • Method 4 The number of CDM (Code Division Multiplexing) groups of DMRS (Demodulation Reference Signal) indicated by the second DCI signaling is greater than 2.
  • the number of CDM groups of DMRS is used to indicate coherent joint transmission of data based on the target TCI state information.
  • DMRS configuration type 2 includes three code division multiplexing groups, namely CDM groups.
  • CDM groups code division multiplexing groups
  • the DMRS ports are constrained to be distributed in three CDM groups.
  • the second DCI signaling includes a second information field, and the second information field is used to indicate the first TCI state used for coherent joint transmission of data; the first TCI state is N target TCI states At least one of;
  • a second information field may be introduced in the second DCI signaling, and the value of the second information field is used to indicate which target TCI states are used for coherent joint transmission in addition to indicating whether coherent joint transmission is currently adopted.
  • the second information field may contain 2 bits, and different values correspond to different indications.
  • the second information field may also include other numbers of bits, such as 4 bits, 8 bits, etc., and various values may correspond to different target TCI states for coherent joint transmission.
  • the embodiments of the present disclosure do not specifically limit this.
  • Mode 6 The preset values of one or more designated information fields included in the second DCI signaling are used to indicate coherent joint transmission of data based on the target TCI state information.
  • the special values of one or more existing information fields in the second DCI signaling can be used to indicate coherent joint transmission.
  • a combination of one or more values of the RV field, the NDI field, and the HARQ process number field is used to indicate coherent joint transmission.
  • the second DCI signaling can be the same DCI signaling as the first DCI signaling indicating the target TCI state information, or it can be a dedicated DCI signaling sent by the network device to the terminal.
  • the terminal can receive the first DCI signaling sent by the network device, the first DCI signaling is used to indicate the target TCI state information, and also indicates to the terminal through at least one of the above methods to perform coherent joint transmission of data based on the target TCI state information, and/or to perform coherent joint transmission of data based on which target TCI states in the target TCI state information.
  • the terminal After receiving the first DCI signaling sent by the network device, the second DCI signaling sent by the network device can be received.
  • the second DCI signaling indicates to the terminal through at least one of the above methods to perform coherent joint transmission of data based on the target TCI state information, and/or to perform coherent joint transmission of data based on which target TCI states in the target TCI state information.
  • the coherent joint transmission method when the target TCI state information includes two target TCI states, instructs the terminal to perform coherent joint transmission of data in various ways through DCI signaling, thereby ensuring that coherent joint transmission under the condition that the target TCI state information includes two target TCI states can be achieved in various scenarios, thereby effectively improving the practicality of the system.
  • the method further includes:
  • the 5G system supports four QCL types, including QCL types A/B/C/D, and the downlink TCI state contains up to two QCL types.
  • the target TCI state includes two target TCL states TCL_1 and TCL_2: TCI_1 contains QCL type A, and TCI_2 contains QCL type B.
  • TCI_1 contains QCL type A
  • TCI_2 contains QCL type B.
  • TCI_1 contains QCL type A+QCL type D
  • TCI_2 contains QCL type B+QCL type D.
  • the QCL type of the target TCL state TCL_1 is different from the QCL type of the target TCL state TCL_2, and the terminal will perform coherent joint transmission of data based on the target TCL state information.
  • the coherent joint transmission method when the target TCI state information includes two target TCI states, performs coherent joint transmission of data by judging whether the QCL types of the two target TCI states are the same, which can effectively save signaling resources and improve the practicality of the system.
  • the coherent joint transmission method provided in the embodiment of the present disclosure may further include:
  • Receive high-level signaling sent by a network device the high-level signaling is used to indicate the target TCI state Information for coherent joint transmission of data.
  • the terminal can receive high-level signaling sent by the network device, such as RRC signaling, to obtain an indication of coherent joint transmission of data based on the target TCI state information.
  • a parameter such as "CJTenable" may be introduced into the RRC signaling, and the use of coherent joint transmission may be indicated based on the value of the parameter.
  • the coherent joint transmission method provided in the embodiment of the present disclosure, when the target TCI state information includes two target TCI states, instructs the terminal to perform coherent joint transmission of data through high-level signaling, which can effectively improve the practicality of the system.
  • step 120 when N is greater than 2, that is, when the target TCI state information includes more than 2 target TCI states, step 120 can be implemented in at least one of the following ways:
  • Mode A coherent joint transmission of data is performed based on the N target TCI states included in the target TCI state information, and the target channel and reference signal are transmitted based on the M second TCI states at the specified positions in the N target TCI states;
  • Mode B coherently jointly transmit data based on the N target TCI states included in the target TCI state information, determine M second TCI states based on the QCL type of each target TCI state in the N target TCI states, and transmit the target channel and the reference signal based on the second TCI state;
  • M is a positive integer less than N; the target channel is a channel other than PDSCH.
  • the terminal may receive MAC-CE signaling sent by a network device, and the MAC-CE signaling may activate one or more groups of TCI state information.
  • Table 5 is an example of a group of TCI state information activated by MAC-CE signaling.
  • a group of TCI state information activated by MAC-CE signaling includes 4 TCI state information, wherein each code point corresponds to one TCI state information, and each TCI state information corresponds to a maximum of 4 downlink TCI states (expressed as TCI) and a maximum of 2 uplink TCI states (expressed as UTCI).
  • the uplink TCI state is used for uplink transmission.
  • DCI signaling selects a code point from the activated TCI state information group according to the value of the TCI indication field to indicate the TCI state information. For example, if the value in the TCI indication field corresponds to code point P1, the network device indicates to the terminal four downlink TCI states TCI_1, TCI_5, TCI_4 and TCI_11, and two uplink TCI states UTCI_2 and UTCI_6.
  • Coherent joint transmission of PDSCH can use 4 downlink TCI states, but the 5G system does not support other channels (PDCCH (Physical Downlink Control Channel)/PUSCH (Physical Uplink Shared Channel)/PUCCH (Physical Uplink Control Channel)) and reference signals (CSI-RS (Channel State Information-Reference Signal)/SRS (Sounding Reference Signal)) using more than 2 TCI states.
  • PDCCH Physical Downlink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • CSI-RS Channel State Information-Reference Signal
  • SRS Sounding Reference Signal
  • the terminal can adopt method A to perform coherent joint transmission of data with the network device based on the target TCI state information.
  • the system predefines all downlink TCI states for coherent joint transmission of PDSCH.
  • PDSCH will use TCI_1, TCI_5, TCI_4 and TCI_11 for joint coherent transmission.
  • the first two (i.e., specified positions) downlink TCI states in the system predefines code points are used for the transmission of PDCCH and CSI-RS, that is, TCI_1 and TCI_5 will be used for transmission of PDCCH/CSI-RS. Since P1 corresponds to 2 uplink TCI states, PUSCH/PUCCH/SRS will use UTCI_2 and UTCI_6 for transmission.
  • Table 6 is an example of a set of TCI state information activated by MAC-CE signaling.
  • a set of TCI state information activated by MAC-CE signaling includes 4 TCI state information, wherein each code point corresponds to one TCI state information, and each TCI state information corresponds to a maximum of 4 joint uplink and downlink TCI states (expressed as TCI).
  • the terminal adopts mode A to perform coherent joint transmission of data with the network device based on the target TCI state information as follows:
  • TCI_1, TCI_5, TCI_4 and TCI_11 for joint coherent transmission.
  • the first two joint uplink and downlink TCI states in the system predefined code points are used for the transmission of other channels/reference signals, that is, TCI_1 and TCI_5 will be used for transmission of PDCCH/PUSCH/PUCCH/CSI-RS/SRS.
  • the coherent joint transmission method when the target TCI state information includes more than two target TCI states, can ensure the relative independence of the transmission of PDSCH and the target channel and reference signal by making all the target TCI states perform coherent joint transmission of data, and making the second TCI state at a specified position perform transmission of the target channel and reference signal, thereby improving the flexibility of system data transmission.
  • the 5G system supports four QCL types, including QCL types A/B/C/D, and the downlink TCI state contains up to two QCL types.
  • the system stipulates that QCL types B/C cannot be used for other channel/reference signal transmissions except PDSCH.
  • the terminal can also use method B to perform coherent joint transmission of data with the network device based on the target TCI state information.
  • a network device is configured as:
  • TCI_1 contains QCL type A + QCL type D;
  • TCI_5 contains QCL type B
  • TCI_4 includes QCL type A + QCL type D;
  • QCL type B is included in TCI_11.
  • PDCCH/CSI-RS will use TCI_1 and TCI_4 for transmission
  • PDSCH will use TCI_1, TCI_5, TCI_4 and TCI_11 for joint coherent transmission.
  • a network device is configured as follows:
  • TCI_1 contains QCL type A + QCL type D;
  • TCI_5 includes QCL type B + QCL type D;
  • TCI_4 includes QCL type A + QCL type D;
  • TCI_11 includes QCL type B + QCL type D.
  • PDCCH/PUSCH/PUCCH/CSI-RS/SRS will be transmitted using TCI_1 and TCI_4, and PDSCH will use TCI_1, TCI_5, TCI_4 and TCI_11 for joint coherent transmission.
  • the QCL type of the M second TCI states in the target TCI state information is different from the QCL type of the remaining N-M target TCI states in the N target TCI state information, and the QCL type of the N-M target TCI states in the target TCI state information is at least one of QCL type B or QCL type C.
  • the coherent joint transmission method when the target TCI state information includes more than two target TCI states, enables all target TCI states to perform coherent joint transmission of data, and enables the second TCI state with a specified QCL type to transmit the target channel and the reference signal, thereby ensuring the relative independence of the transmission of PDSCH and the target channel and the reference signal, thereby improving the flexibility of system data transmission.
  • the coherent joint transmission method provided in the embodiment of the present disclosure may further include:
  • a second DCI signaling sent by a network device is received, where the second DCI signaling includes a third information field, where the third information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of N target TCI states.
  • a third information field may be introduced in the second DCI signaling.
  • the value of the information field is also used to indicate which target TCI states in the target TCI state information are used for coherent joint transmission.
  • the third information field may include 4 bits, whose value may be, for example, "0111", which is used to indicate the use of TCI_5, TCI_4 and TCI_11 for joint coherent transmission of PDSCH, where "1" is used to indicate the corresponding target TCI state.
  • "0" is used to indicate that the corresponding target TCI state is not used for coherent joint transmission.
  • the value of the third information field can also be, for example, "0110", which is used to indicate the use of TCI_1 and TCI_11 for joint coherent transmission of PDSCH, wherein "0" is used to indicate that the corresponding target TCI state is used for coherent joint transmission, and "1" is used to indicate that the corresponding target TCI state is not used for coherent joint transmission.
  • the disclosed embodiments do not specifically limit the value of the third information field, and the indication of whether the target TCI state is used corresponding to the value.
  • the coherent joint transmission method provided by the embodiment of the present disclosure can ensure that coherent joint transmission can be achieved in various scenarios by directly indicating to the terminal through DCI signaling which target TCI states to use for coherent joint transmission of data when the target TCI state information includes more than two target TCI states, thereby effectively improving the practicality of the system.
  • the third information field can also be used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of N target TCI states, and the target channel is a channel other than PDSCH.
  • the third information field may contain 8 bits, wherein the first 4 bits correspond to the target TCI state corresponding to the joint transmission, and the last 4 bits correspond to the TCI state used by other channels/reference signals.
  • the value of the third information field may be, for example, "01110011", indicating that the PDSCH will use TCI_5, TCI_4, and TCI_11 for joint coherent transmission, and the PDCCH/CSI-RS will use TCI_4 and TCI_11 for transmission.
  • the coherent joint transmission method provided by the embodiment of the present disclosure can ensure that coherent joint transmission can be achieved in various scenarios, and the relative independence of the transmission of PDSCH and the target channel and reference signal can be guaranteed, by directly indicating to the terminal through DCI signaling which target TCI states are used for coherent joint transmission of data and which second TCI states are used for transmission of target channels and reference signals when the target TCI state information includes more than two target TCI states. This can improve the flexibility of system data transmission.
  • FIG2 is a second flow chart of the coherent joint transmission method provided by an embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a coherent joint transmission method, the execution subject of which may be a network device, such as a base station, etc.
  • the method includes:
  • Step 210 Send MAC-CE signaling or first DCI signaling to the terminal.
  • MAC-CE signaling or The first DCI signaling is used to indicate the target TCI state information;
  • Step 220 perform coherent joint transmission of data based on the target TCI state information
  • the target TCI state information includes N target TCI states, where the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; and N is a positive integer greater than 1.
  • the network device may send MAC-CE signaling to the terminal, and the MAC-CE signaling may activate one or more groups of TCI state information.
  • Table 1 is an example of a group of TCI state information activated by MAC-CE signaling.
  • a group of TCI state information activated by MAC-CE signaling includes 8 TCI state information, wherein each code point corresponds to a TCI state information, and each TCI state information corresponds to 1 or 2 (or more, Table 1 is only for example) target TCI states.
  • the target TCI state is an uplink and downlink joint TCI state
  • the target TCI state can be used for both downlink transmission and uplink transmission.
  • the network device can still determine which of the group of TCI state information is used as the target TCI state information by sending a MAC-CE to the terminal.
  • the MAC-CE may be the same as the MAC-CE that activates one or more groups of TCI state information, or may be a dedicated MAC-CE sent by the network device to the terminal.
  • the network device may also determine which one of the group of TCI state information is used as the target TCI state information by sending a first DCI signaling to the terminal.
  • the first DCI signaling can select a code point from the activated TCI state information group according to the value of the TCI indication field to indicate the TCI state. For example, if the value in the TCI indication field corresponds to code point P3, the network device indicates to the terminal the target TCI state information including two target TCI states TCI_7 and TCI_9.
  • the terminal will directly perform coherent joint transmission of data based on the single target TCI state in the target TCI state information.
  • the network device When the target TCI state information indicated by the MAC-CE or the first DCI includes two or more target TCI states, the network device will further instruct the terminal whether to perform coherent joint transmission of data based on the target TCI state information, and/or specifically based on which target TCI states in the target TCI state information to perform coherent joint transmission of data.
  • the network device and the terminal may also perform coherent joint transmission of data based on the target TCI state information in a predetermined manner.
  • step 120 after indicating the target TCI state information to the terminal, the network device will perform coherent joint transmission of data with the terminal based on the target TCI state information. That is, the network device will use multiple TRPs to simultaneously transmit the same data stream with the terminal based on one or more target TCI states in the target TCI state information.
  • the coherent joint transmission method provided in the embodiment of the present disclosure indicates the target TCI state information to the terminal through MAC-CE signaling or DCI signaling, so that the terminal and the network device can perform coherent joint transmission of data based on the target TCI state. This can realize coherent joint transmission of data in a multi-TRP scenario, thereby improving the data transmission performance and flexibility of the communication system.
  • the network device when N is 2, that is, when the target TCI state information includes 2 target TCI states, the network device needs to further instruct the terminal whether to perform coherent joint transmission of data based on the target TCI state information, and/or specifically based on which target TCI states in the target TCI state information to perform coherent joint transmission of data. Therefore, before step 120, the coherent joint transmission method provided in the embodiment of the present disclosure may also include:
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, where the first information field is used to indicate coherent joint transmission of data based on target TCI state information.
  • the second DCI signaling may include a first information field, and the first information field may be used to explicitly instruct the terminal to perform coherent joint transmission based on the target TCI state information.
  • the value of the first information field can be used to indicate whether coherent joint transmission is adopted.
  • the first information field can use a 1-bit width. When the value of the first information field is "0”, it indicates that coherent joint transmission is not adopted. When the value of the first information field is "1”, it indicates that coherent joint transmission is adopted. Alternatively, when the value of the first information field is "1”, it indicates that coherent joint transmission is not adopted. When the value of the first information field is "0", it indicates that coherent joint transmission is adopted.
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate coherent joint transmission of data based on the target TCI state information.
  • the time domain resource assignment field (TDRA) in the second DCI signaling can be used to indicate whether to perform coherent joint transmission of data based on the target TCI state information.
  • the time domain resource assignment field corresponds to a resource allocation parameter list, as shown in Table 2.
  • Each row in Table 2 corresponds to a set of parameter values, including slot offset, start symbol and length, PDSCH mapping type and number of repetitions, etc.
  • the resource allocation parameter list is configured by a high-level parameter RRC or is predefined by the system.
  • the value of the number of repetitions in the resource allocation parameter list may be specifically used to indicate whether coherent joint transmission of data is performed based on the target TCI state information.
  • the target TCI state information corresponding to this row is used for coherent joint transmission.
  • Table 2 when the value of the time domain resource allocation field corresponds to code point P1, coherent joint transmission is performed based on the target TCI state information. When it corresponds to other code points, coherent joint transmission is not used.
  • the number of repetitions may also be configured to be 2, 8, 4, etc. before joint coherent transmission is performed.
  • the embodiments of the present disclosure do not specifically limit this.
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and the value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • a target parameter may be introduced into the resource allocation parameter list corresponding to the time domain resource allocation domain, as shown in Table 3, and based on the value of the target parameter, it is indicated whether coherent joint transmission of data is performed based on the target TCI state information.
  • the target parameter value of 0 indicates that coherent joint transmission is not used, and the target parameter value of 1 indicates that coherent joint transmission is used. For example, when the value of the time domain resource allocation field corresponds to code point P2 or P3, coherent joint transmission is used. When it corresponds to code point P1 or P4, coherent joint transmission is not used.
  • the target parameter value may be set to 1 to indicate that coherent joint transmission is not adopted, and set to 0 to indicate that coherent joint transmission is adopted. This embodiment of the present disclosure does not specifically limit this.
  • Method 4 The number of CDM (Code Division Multiplexing) groups of DMRS (Demodulation Reference Signal) indicated by the second DCI signaling is greater than 2.
  • the number of CDM groups of DMRS is used to indicate coherent joint transmission of data based on the target TCI state information.
  • DMRS configuration type 2 includes 3 code division multiplexing In the antenna port indication field of the DCI, when three or more DMRS ports are indicated, the constrained DMRS ports are distributed in three CDM groups.
  • the second DCI signaling includes a second information field, where the second information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states;
  • a second information field may be introduced in the second DCI signaling, and the value of the second information field is used to indicate which target TCI states are used for coherent joint transmission in addition to indicating whether coherent joint transmission is currently adopted.
  • the second information field may contain 2 bits, and different values correspond to different indications.
  • the second information field may also include other numbers of bits, such as 4 bits, 8 bits, etc., and various values may correspond to different target TCI states for coherent joint transmission.
  • the embodiments of the present disclosure do not specifically limit this.
  • Mode 6 The preset values of one or more designated information fields included in the second DCI signaling are used to indicate coherent joint transmission of data based on the target TCI state information.
  • the special values of one or more existing information fields in the second DCI signaling can be used to indicate coherent joint transmission.
  • a combination of one or more values of the RV field, the NDI field, and the HARQ process number field is used to indicate coherent joint transmission.
  • the second DCI signaling can be the same DCI signaling as the first DCI signaling indicating the target TCI state information, or it can be a dedicated DCI signaling sent by the network device to the terminal.
  • the network device may send a first DCI signaling to the terminal, the first DCI signaling is used to indicate the target TCI state information, and also indicates to the terminal through at least one of the above methods to perform coherent joint transmission of data based on the target TCI state information, and/or based on which target TCI states in the target TCI state information to perform coherent joint transmission of data.
  • the network device may send a second DCI signaling to the terminal after sending the first DCI signaling to the terminal, and the second DCI signaling indicates to the terminal through at least one of the above methods to perform coherent joint transmission of data based on the target TCI state information, and/or based on which target TCI states in the target TCI state information to perform coherent joint transmission of data.
  • the coherent joint transmission method when the target TCI state information includes two target TCI states, instructs the terminal to perform coherent joint transmission of data in various ways through DCI signaling, thereby ensuring that coherent joint transmission under the condition that the target TCI state information includes two target TCI states can be achieved in various scenarios, thereby effectively improving the practicality of the system.
  • the method further includes:
  • the 5G system supports four QCL types, including QCL types A/B/C/D, and the downlink TCI state contains up to two QCL types.
  • the target TCI state includes two target TCL states TCL_1 and TCL_2: TCI_1 contains QCL type A, and TCI_2 contains QCL type B.
  • TCI_1 contains QCL type A
  • TCI_2 contains QCL type B.
  • TCI_1 contains QCL type A+QCL type D
  • TCI_2 contains QCL type B+QCL type D.
  • the QCL type of the target TCL state TCL_1 is different from the QCL type of the target TCL state TCL_2, and the network device will perform coherent joint transmission of data based on the target TCL state information.
  • the coherent joint transmission method provided by the embodiment of the present disclosure includes two In the case of the target TCI state, coherent joint transmission of data is performed by judging whether the QCL types of the two target TCI states are the same, which can effectively save signaling resources and improve the practicality of the system.
  • the coherent joint transmission method provided in the embodiment of the present disclosure may further include:
  • a high-layer signaling is sent to the terminal via high-layer signaling; the high-layer signaling is used to instruct the terminal to perform coherent joint transmission of data based on the target TCI state information.
  • the network device may send high-level signaling, such as RRC signaling, to the terminal to instruct coherent joint transmission of data based on the target TCI state information.
  • high-level signaling such as RRC signaling
  • a parameter such as "CJTenable" may be introduced into the RRC signaling, and the use of coherent joint transmission may be indicated based on the value of the parameter.
  • the coherent joint transmission method provided in the embodiment of the present disclosure, when the target TCI state information includes two target TCI states, instructs the terminal to perform coherent joint transmission of data through high-level signaling, which can effectively improve the practicality of the system.
  • step 120 when N is greater than 2, that is, when the target TCI state information includes more than 2 target TCI states, step 120 can be implemented in at least one of the following ways:
  • Mode A coherent joint transmission of data is performed based on the N target TCI states included in the target TCI state information, and the target channel and reference signal are transmitted based on the M second TCI states at the specified positions in the N target TCI states;
  • Mode B Coherent joint transmission of data is performed based on N target TCI states included in the target TCI state information, and M second TCI states are determined based on the QCL (Quasi Co-Location) type of each target TCI state in the N target TCI states, and the target channel and the reference signal are transmitted based on the second TCI state;
  • QCL Quad Co-Location
  • M is a positive integer less than N; the target channel is a channel other than PDSCH.
  • the network device may send MAC-CE signaling to the terminal, and the MAC-CE signaling may Activate one or more groups of TCI state information.
  • Table 5 is an example of a group of TCI state information activated by MAC-CE signaling.
  • a group of TCI state information activated by MAC-CE signaling includes 4 TCI state information, wherein each code point corresponds to one TCI state information, and each TCI state information corresponds to a maximum of 4 downlink TCI states (expressed as TCI) and a maximum of 2 uplink TCI states (expressed as UTCI).
  • the uplink TCI state is used for uplink transmission.
  • DCI signaling selects a code point from the activated TCI state information group according to the value of the TCI indication field to indicate the TCI state information. For example, if the value in the TCI indication field corresponds to code point P1, the network device indicates to the terminal four downlink TCI states TCI_1, TCI_5, TCI_4 and TCI_11, and two uplink TCI states UTCI_2 and UTCI_6.
  • Coherent joint transmission of PDSCH can use 4 downlink TCI states, but the 5G system does not support other channels (PDCCH (Physical Downlink Control Channel)/PUSCH (Physical Uplink Shared Channel)/PUCCH (Physical Uplink Control Channel)) and reference signals (CSI-RS (Channel State Information-Reference Signal)/SRS (Sounding Reference Signal)) using more than 2 TCI states.
  • PDCCH Physical Downlink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • CSI-RS Channel State Information-Reference Signal
  • SRS Sounding Reference Signal
  • the network device can adopt method A to perform coherent joint transmission of data with the terminal based on the target TCI state information.
  • the system predefines all downlink TCI states for coherent joint transmission of PDSCH.
  • PDSCH will use TCI_1, TCI_5, TCI_4 and TCI_11 for joint coherent transmission.
  • the first two (i.e., designated positions) downlink TCI states in the system predefine code points are used for PDCCH and CSI-RS transmission, that is, TCI_1 and TCI_5 will be used for PDCCH/CSI-RS transmission. Since P1 corresponds to two uplink TCI states, PUSCH/PUCCH/SRS will use UTCI_2 and UTCI_6 is used for transmission.
  • Table 6 is an example of a set of TCI state information activated by MAC-CE signaling.
  • a set of TCI state information activated by MAC-CE signaling includes 4 TCI state information, wherein each code point corresponds to one TCI state information, and each TCI state information corresponds to a maximum of 4 joint uplink and downlink TCI states (expressed as TCI).
  • the network device adopts mode A to perform coherent joint transmission of data with the terminal based on the target TCI state information as follows:
  • TCI_1, TCI_5, TCI_4 and TCI_11 for joint coherent transmission.
  • the first two joint uplink and downlink TCI states in the system predefined code points are used for the transmission of other channels/reference signals, that is, TCI_1 and TCI_5 will be used for transmission of PDCCH/PUSCH/PUCCH/CSI-RS/SRS.
  • the coherent joint transmission method when the target TCI state information includes more than two target TCI states, can ensure the relative independence of the transmission of PDSCH and the target channel and reference signal by making all the target TCI states perform coherent joint transmission of data, and making the second TCI state at a specified position perform transmission of the target channel and reference signal, thereby improving the flexibility of system data transmission.
  • the 5G system supports four QCL types, including QCL types A/B/C/D, and the downlink TCI state contains up to two QCL types.
  • the system stipulates that QCL types B/C cannot be used for other channel/reference signal transmissions except PDSCH.
  • the network device can also use method B to perform coherent joint transmission of data with the terminal based on the target TCI state information.
  • a network device is configured as:
  • TCI_1 contains QCL type A + QCL type D;
  • TCI_5 contains QCL type B
  • TCI_4 includes QCL type A + QCL type D;
  • QCL type B is included in TCI_11.
  • PDCCH/CSI-RS will use TCI_1 and TCI_4 for transmission
  • PDSCH will use TCI_1, TCI_5, TCI_4 and TCI_11 for joint coherent transmission.
  • a network device is configured as follows:
  • TCI_1 contains QCL type A + QCL type D;
  • TCI_5 includes QCL type B + QCL type D;
  • TCI_4 includes QCL type A + QCL type D;
  • TCI_11 includes QCL type B + QCL type D.
  • PDCCH/PUSCH/PUCCH/CSI-RS/SRS will be transmitted using TCI_1 and TCI_4, and PDSCH will use TCI_1, TCI_5, TCI_4 and TCI_11 for joint coherent transmission.
  • the QCL type of the M second TCI states in the target TCI state information is different from the QCL type of the remaining N-M target TCI states in the N target TCI state information, and the QCL type of the N-M target TCI states in the target TCI state information is at least one of QCL type B or QCL type C.
  • the coherent joint transmission method when the target TCI state information includes more than two target TCI states, enables all target TCI states to perform coherent joint transmission of data, and enables the second TCI state with a specified QCL type to transmit the target channel and the reference signal, thereby ensuring the relative independence of the transmission of PDSCH and the target channel and the reference signal, thereby improving the flexibility of system data transmission.
  • the coherent joint transmission method provided in the embodiment of the present disclosure may further include:
  • the second DCI signaling includes a third information field, the third information field is used to indicate the first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states.
  • a third information field may be introduced in the second DCI signaling.
  • the value of the information field is also used to indicate which target TCI states in the target TCI state information are used for coherent joint transmission.
  • the third information field may include 4 bits, and its value may be, for example, "0111", which is used to indicate the use of TCI_5, TCI_4 and TCI_11 for joint coherent transmission of PDSCH, wherein "1" is used to indicate that the corresponding target TCI state is used for coherent joint transmission, and "0" is used to indicate that the corresponding target TCI state is not used for coherent joint transmission.
  • the value of the third information field may also be, for example, "0110", which is used to indicate the use of TCI_1 and TCI_11 for joint coherent transmission of PDSCH, wherein "0" is used to indicate that the corresponding target TCI state is used for coherent joint transmission, and "1" is used to indicate that the corresponding target TCI state is not used for coherent joint transmission.
  • the disclosed embodiments do not specifically limit the value of the third information field, and the indication of whether the target TCI state is used corresponding to the value.
  • the coherent joint transmission method provided by the embodiment of the present disclosure can ensure that coherent joint transmission can be achieved in various scenarios by directly indicating to the terminal through DCI signaling which target TCI states to use for coherent joint transmission of data when the target TCI state information includes more than two target TCI states, thereby effectively improving the practicality of the system.
  • the third information field can also be used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of N target TCI states, and the target channel is a channel other than PDSCH.
  • the third information field may contain 8 bits, wherein the first 4 bits correspond to the target TCI state corresponding to the joint transmission, and the last 4 bits correspond to the TCI state used by other channels/reference signals.
  • the value of the third information field may be, for example, "01110011", indicating that the PDSCH will use TCI_5, TCI_4, and TCI_11 for joint coherent transmission, and the PDCCH/CSI-RS will use TCI_4 and TCI_11 for transmission.
  • the coherent joint transmission method provided by the embodiment of the present disclosure directly indicates to the terminal through DCI signaling which target TCI states are used for coherent joint transmission of data, and which second TCI states are used for target TCI state information when the target TCI state information includes more than two target TCI states.
  • the transmission of channels and reference signals can ensure coherent joint transmission in various scenarios, and can ensure the relative independence of the transmission of PDSCH and the target channel and reference signal, thereby improving the flexibility of system data transmission.
  • FIG3 is a schematic diagram of the structure of a terminal provided by an embodiment of the present disclosure.
  • the terminal includes a memory 320, a transceiver 300, and a processor 310, wherein:
  • the memory 320 is used to store computer programs; the transceiver 300 is used to send and receive data under the control of the processor 310; the processor 310 is used to read the computer program in the memory 320 and perform the following operations:
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 310 and various circuits of memory represented by memory 320 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, regulators, and power management circuits together, which are all well known in the art and are therefore not further described herein.
  • the bus interface provides an interface.
  • the transceiver 300 may 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 330 may 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 310 is responsible for managing the bus architecture and general processing, and the memory 320 can store data used by the processor 310 when performing operations.
  • the processor 310 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate
  • the processor may also adopt a multi-core architecture, such as Field-Programmable Gate Array (FPGA) or Complex Programmable Logic Device (CPLD).
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • the processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions.
  • the processor and the memory can also be arranged physically separately.
  • the processor 310 when N is 2, before the coherent joint transmission of data based on the TCI state information, the processor 310 is further configured to: receive second DCI signaling sent by the network device;
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, where the first information field is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and a value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • CDM groups of a demodulation reference signal DMRS indicated by the second DCI signaling is greater than 2, and the number of CDM groups of the DMRS is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a second information field, where the second information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states;
  • the preset values of one or more designated information fields included in the second DCI signaling are used to indicate coherent joint transmission of data based on the target TCI state information.
  • the processor 310 when N is 2, before the coherent joint transmission of data based on the target TCI state information, the processor 310 is further configured to:
  • the quasi-co-site QCL types that determine the two target TCI states are different.
  • the processor 310 when N is 2, before the coherent joint transmission of data based on the target TCI state information, the processor 310 is further configured to:
  • Receive high-level signaling sent by the network device is used to indicate coherent joint transmission of data based on the target TCI state information.
  • the coherent joint transmission of data based on the target TCI state information includes at least one of the following:
  • M is a positive integer less than N; the target channel is a channel other than the physical downlink shared channel PDSCH.
  • the processor 310 when N is greater than 2, before the coherent joint transmission of data based on the target TCI state information, the processor 310 is further configured to:
  • the third information field is also used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of the N target TCI states, and the target channel is a channel other than PDSCH.
  • the QCL type of the M second TCI states is different from the QCL type of the remaining N-M target TCI states among the N target TCI states.
  • the QCL types of the NM target TCI states include at least one of QCL type B or QCL type C.
  • FIG4 is a schematic diagram of the structure of a network device provided in an embodiment of the present disclosure.
  • the network device includes a memory 420, a transceiver 400, and a processor 410, wherein:
  • the memory 420 is used to store computer programs; the transceiver 400 is used to send and receive data under the control of the processor 410; the processor 410 is used to read the computer program in the memory 420 and perform the following operations:
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1.
  • the transceiver 400 is used to receive and send data under the control of the processor 410.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 410 and various circuits of memory represented by memory 420 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 herein.
  • the bus interface provides an interface.
  • the transceiver 400 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium includes a wireless channel, a wired channel, an optical cable, and other transmission media.
  • the processor 410 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 410 when performing operations.
  • the processor 410 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a -Programmable Gate Array, FPGA) or Complex Programmable Logic Device (CPLD), the processor can also adopt a multi-core architecture.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • CPLD Complex Programmable Logic Device
  • the processor 410 when N is 2, before the coherent joint transmission of data based on the TCI state information, the processor 410 is further configured to: send a second DCI signaling to the terminal;
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, where the first information field is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and a value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • CDM groups of a demodulation reference signal DMRS indicated by the second DCI signaling is greater than 2, and the number of CDM groups of the DMRS is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a second information field, where the second information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states;
  • the preset values of one or more designated information fields included in the second DCI signaling are used to indicate coherent joint transmission of data based on the target TCI state information.
  • the processor 410 when N is 2, before the coherent joint transmission of data based on the target TCI state information, the processor 410 is further configured to:
  • the quasi-co-site QCL types that determine the two target TCI states are different.
  • the processor 410 when N is 2, before the coherent joint transmission of data based on the target TCI state information, the processor 410 is further configured to:
  • the terminal is instructed to perform coherent joint transmission of data based on the target TCI state information through high-layer signaling.
  • the coherent joint transmission of data based on the target TCI state information includes at least one of the following:
  • M is a positive integer less than N; the target channel is a channel other than the physical downlink shared channel PDSCH.
  • the processor 410 when N is greater than 2, before the coherent joint transmission of data based on the target TCI state information, the processor 410 is further configured to:
  • a second DCI signaling is sent to the terminal, where the second DCI signaling includes a third information field, where the third information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states.
  • the third information field is also used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of the N target TCI states, and the target channel is a channel other than PDSCH.
  • the QCL type of the M second TCI states is different from the QCL type of the remaining N-M target TCI states among the N target TCI states.
  • the QCL types of the N-M target TCI states include at least one of QCL type B or QCL type C.
  • the network device provided in the embodiment of the present disclosure can implement all the method steps implemented by the method embodiment in which the execution subject is the network device, and can achieve the same technical effect.
  • the parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be further described. I will go into more detail.
  • FIG5 is one of the structural schematic diagrams of the coherent joint transmission device provided by the embodiment of the present disclosure. As shown in FIG5, the embodiment of the present disclosure also provides a coherent joint transmission device, which is applied to a terminal, and the device includes:
  • the receiving module 510 is used to receive a media access control unit MAC-CE signaling or a first downlink control information DCI signaling sent by a network device, where the MAC-CE signaling or the first DCI signaling is used to indicate target transmission configuration indication TCI state information;
  • a transmission module 520 configured to perform coherent joint transmission of data based on the target TCI state information
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1.
  • the receiving module 510 when N is 2, before the coherent joint transmission of data based on the TCI state information, the receiving module 510 is further used to: receive a second DCI signaling sent by the network device;
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, where the first information field is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and a value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • CDM groups of a demodulation reference signal DMRS indicated by the second DCI signaling is greater than 2, and the number of CDM groups of the DMRS is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a second information field, where the second information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states;
  • the preset values of one or more designated information fields included in the second DCI signaling are used to indicate coherent joint transmission of data based on the target TCI state information.
  • the transmission module 520 when N is 2, before the coherent joint transmission of data based on the target TCI state information, the transmission module 520 is further configured to:
  • the quasi-co-site QCL types that determine the two target TCI states are different.
  • the receiving module 510 when N is 2, before the coherent joint transmission of data based on the target TCI state information, the receiving module 510 is further used to:
  • Receive high-level signaling sent by the network device is used to indicate coherent joint transmission of data based on the target TCI state information.
  • the transmission module 520 is specifically configured to perform at least one of the following:
  • M is a positive integer less than N; the target channel is a channel other than the physical downlink shared channel PDSCH.
  • the receiving module 510 when N is greater than 2, before the coherent joint transmission of data based on the target TCI state information, the receiving module 510 is further configured to:
  • the third information field is also used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of the N target TCI states, and the target channel is a channel other than PDSCH.
  • the QCL type of the M second TCI states is different from the QCL type of the remaining N-M target TCI states among the N target TCI states.
  • the QCL types of the N-M target TCI states include at least one of QCL type B or QCL type C.
  • FIG6 is a second structural diagram of a coherent joint transmission device provided by an embodiment of the present disclosure. As shown in FIG6 , an embodiment of the present disclosure further provides a coherent joint transmission device, which is applied to a network device, and the device includes:
  • a sending module 610 is configured to send a media access control unit MAC-CE signaling or a first downlink control information DCI signaling to a terminal, where the MAC-CE signaling or the first DCI signaling is used to indicate target transmission configuration indication TCI state information;
  • a transmission module 620 configured to perform coherent joint transmission of data based on the target TCI state information
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1.
  • the sending module 610 when N is 2, before the coherent joint transmission of data based on the TCI state information, the sending module 610 is further used to: send a second DCI signaling to the terminal;
  • the second DCI signaling is used to instruct the terminal to perform coherent joint transmission of data in at least one of the following ways:
  • the second DCI signaling includes a first information field, and the first information field is used to indicate Target TCI status information for coherent joint transmission of data;
  • the second DCI signaling includes a resource allocation field, the number of repetitions of the target TCI state information in the resource allocation field is 1, and the number of repetitions of the target TCI state information is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a resource allocation field, the resource allocation field includes a target parameter, and a value of the target parameter is used to indicate coherent joint transmission of data based on the target TCI state information;
  • CDM groups of a demodulation reference signal DMRS indicated by the second DCI signaling is greater than 2, and the number of CDM groups of the DMRS is used to indicate coherent joint transmission of data based on the target TCI state information;
  • the second DCI signaling includes a second information field, where the second information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states;
  • the preset values of one or more designated information fields included in the second DCI signaling are used to indicate coherent joint transmission of data based on the target TCI state information.
  • the transmission module 620 when N is 2, before the coherent joint transmission of data based on the target TCI state information, the transmission module 620 is further used to:
  • the quasi-co-site QCL types that determine the two target TCI states are different.
  • the sending module 610 when N is 2, before the coherent joint transmission of data based on the target TCI state information, the sending module 610 is further used to:
  • the terminal is instructed to perform coherent joint transmission of data based on the target TCI state information through high-layer signaling.
  • the transmission module 620 is specifically configured to perform at least one of the following:
  • Data coherence is performed based on the N target TCI states included in the target TCI state information. Joint transmission, and determining M second TCI states according to the quasi-co-located QCL type of each target TCI state in the N target TCI states, and transmitting the target channel and the reference signal based on the second TCI state;
  • M is a positive integer less than N; the target channel is a channel other than the physical downlink shared channel PDSCH.
  • the sending module 610 when N is greater than 2, before the coherent joint transmission of data based on the target TCI state information, the sending module 610 is further used to:
  • a second DCI signaling is sent to the terminal, where the second DCI signaling includes a third information field, where the third information field is used to indicate a first TCI state used for coherent joint transmission of data; the first TCI state is at least one of the N target TCI states.
  • the third information field is also used to indicate a second TCI state for transmitting a target channel and a reference signal; the second TCI state is at least one of the N target TCI states, and the target channel is a channel other than PDSCH.
  • the QCL type of the M second TCI states is different from the QCL type of the remaining N-M target TCI states among the N target TCI states.
  • the QCL types of the N-M target TCI states include at least one of QCL type B or QCL type C.
  • 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 disclosed technical solution in essence, or the part that contributes to the related technology, or the whole or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present disclosure.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program codes.
  • an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, wherein the computer program is used to enable the processor to execute the methods provided in the above embodiments, for example, including:
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1. or
  • the target TCI state information includes N target TCI states, and the target TCI state is any one of a downlink TCI state or an uplink and downlink combined TCI state; N is a positive integer greater than 1.
  • the processor-readable storage medium may be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor storage (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state hard disk, etc.). Disk (SSD)), etc.
  • magnetic storage e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)
  • optical storage e.g., CD, DVD, BD, HVD, etc.
  • semiconductor storage e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state hard disk, etc.).
  • SSD Disk
  • 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
  • the system can also include core network parts, such as the Evolved Packet
  • the terminal device 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 names of terminal devices may also be different.
  • the terminal device may be called a user equipment (UE).
  • UE user equipment
  • a wireless terminal device may communicate with one or more core networks (CN) via a radio access network (RAN).
  • CN core networks
  • RAN radio access network
  • the wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device.
  • a wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, or a wireless terminal. Agent), user device (user device), which is not limited in the embodiments of the present disclosure.
  • the network device involved in the embodiments of the present disclosure may be a base station, which may include multiple cells that provide services to the terminal.
  • the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names.
  • the network device can be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network.
  • IP Internet Protocol
  • the network device can also coordinate the attribute management of the air interface.
  • the network device involved in the embodiments of the present disclosure may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolved network device (evolutional Node B, eNB or e-NodeB) in the Long Term Evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a Home evolved Node B (HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., but is not limited in the embodiments of the present disclosure.
  • network devices may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and the distributed unit may also be geographically separated.
  • Network devices and terminal devices can each use one or more antennas for multiple input multiple output (MIMO) transmission.
  • MIMO transmission can be single user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO).
  • MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.
  • 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 aspects. Furthermore, the present disclosure may take the form of one or more The form of a computer program product implemented on a computer-usable storage medium (including but not limited to disk storage and optical storage, etc.) containing computer-usable program codes.
  • a computer-usable storage medium 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 flows in the flowchart and/or one or more blocks in the block diagram.

Abstract

本公开实施例提供一种相干联合传输方法及装置，属于通信技术领域。所述方法包括：接收网络设备发送的媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；基于所述目标TCI状态信息进行数据的相干联合传输；其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。

Description

相干联合传输方法及装置
相关申请的交叉引用
本申请要求于2022年09月30日提交的申请号为202211216166.8，发明名称为“相干联合传输方法及装置”的中国专利申请的优先权，其通过引用方式全部并入本文。
技术领域
本公开涉及通信技术领域，尤其涉及一种相干联合传输方法及装置。
背景技术
多发送接收节点(multi-TRP)传输技术是改善小区边缘覆盖、在服务区内提供更为均衡的服务质量的重要技术手段。当前的5G NR(New Radio，新空口)系统，支持多点协作的PDSCH(Physical Downlink Shared Channel，物理下行共享信道)传输技术。
当多个TRP(Transmission/Receiption Point，发送接收点)的传输信道特性近似时，可以使用多个TRP进行相干联合传输，即同一个数据流可以从多个TRP同时传输。然而，现有通信系统中还不支持multi-TRP场景下的相干联合传输。
发明内容
本公开实施例提供一种相干联合传输方法及装置，用以解决相关技术中不支持multi-TRP场景下的相干联合传输的缺陷，实现multi-TRP场景下数据的相干联合传输，以提高通信系统的数据传输性能。
第一方面，本公开实施例提供一种相干联合传输方法，应用于终端，所述方法包括：
接收网络设备发送的媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配 置指示TCI状态信息；
基于所述目标TCI状态信息进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
在一个实施例中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述方法还包括：接收所述网络设备发送的第二DCI信令；
所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
确定2个目标TCI状态的准共址QCL类型不同。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
接收所述网络设备发送的高层信令；所述高层信令用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输，包括以下至少一项：
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
接收所述网络设备发送的第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
在一个实施例中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
在一个实施例中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
在一个实施例中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
第二方面，本公开实施例还提供一种相干联合传输方法，应用于网络设备，所述方法包括：
向终端发送媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
基于所述目标TCI状态信息与进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
在一个实施例中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述方法还包括：向所述终端发送第二DCI信令；
所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基 于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
确定2个目标TCI状态的准共址QCL类型不同。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
通过高层信令向所述终端指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输，包括以下至少一项：
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并利用所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并根据所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
向所述终端发送第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
在一个实施例中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
在一个实施例中，所述M个第二TCI状态的QCL类型，与所述N个目 标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
在一个实施例中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
第三方面，本公开实施例还提供一种终端，包括存储器，收发机，处理器：
存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
接收网络设备发送的媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
基于所述目标TCI状态信息进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
在一个实施例中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：接收所述网络设备发送的第二DCI信令；
所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大 于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
确定2个目标TCI状态的准共址QCL类型不同。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
接收所述网络设备发送的高层信令；所述高层信令用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输，包括以下至少一项：
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
接收所述网络设备发送的第二DCI信令，所述第二DCI信令包括第三信 息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
在一个实施例中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
在一个实施例中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
在一个实施例中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
第四方面，本公开实施例还提供一种网络设备，包括存储器，收发机，处理器：
存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
向终端发送媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
基于所述目标TCI状态信息与进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
在一个实施例中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：向所述终端发送第二DCI信令；
所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于 所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
确定2个目标TCI状态的准共址QCL类型不同。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
通过高层信令向所述终端指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输，包括以下至少一项：
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并利用所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并根据所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
向所述终端发送第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
在一个实施例中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
在一个实施例中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
在一个实施例中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
第五方面，本公开实施例还提供一种相干联合传输装置，应用于终端，所述装置包括：
接收模块，用于接收网络设备发送的媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
传输模块，用于基于所述目标TCI状态信息进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
在一个实施例中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述接收模块还用于：接收所述网络设备发送的第二DCI信令；
所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述传输模块还用于：
确定2个目标TCI状态的准共址QCL类型不同。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述接收模块还用于：
接收所述网络设备发送的高层信令；所述高层信令用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N大于2时，所述传输模块具体用于执行以下至少一项：
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述接收模块还用于：
接收所述网络设备发送的第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
在一个实施例中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
在一个实施例中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
在一个实施例中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
第六方面，本公开实施例还提供一种相干联合传输装置，应用于网络设备，所述装置包括：
发送模块，用于向终端发送媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
传输模块，用于基于所述目标TCI状态信息与进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
在一个实施例中，当N为2时，所述基于所述TCI状态信息进行数据的 相干联合传输之前，所述发送模块还用于：向所述终端发送第二DCI信令；
所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述传输模块还用于：
确定2个目标TCI状态的准共址QCL类型不同。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述发送模块还用于：
通过高层信令向所述终端指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N大于2时，所述传输模块具体用于执行以下至少一项：
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并利用所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并根据所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述发送模块还用于：
向所述终端发送第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
在一个实施例中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
在一个实施例中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
在一个实施例中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
第七方面，本公开实施例还提供一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行如上所述第一方面的方法，或者执行如上所述第二方面的方法。
本公开实施例提供的相干联合传输方法及装置，通过MAC-CE信令或DCI信令向终端指示目标TCI状态信息，以便终端和网络设备基于目标TCI状态信息中的多个目标TCI状态实现multi-TRP场景下数据的相干联合传输，提高了通信系统的数据传输性能和灵活性。
附图说明
为了更清楚地说明本公开实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本公开实施例提供的相干联合传输方法的流程示意图之一；
图2是本公开实施例提供的相干联合传输方法的流程示意图之二；
图3是本公开实施例提供的终端的结构示意图；
图4是本公开实施例提供的网络设备的结构示意图；
图5是本公开实施例提供的相干联合传输装置的结构示意图之一；
图6是本公开实施例提供的相干联合传输装置的结构示意图之二。
具体实施方式
本公开实施例中术语“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本公开实施例中术语“多个”是指两个或两个以上，其它量词与之类似。
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，并不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
本公开实施例提供了相干联合传输方法及装置，用以实现multi-TRP场景下数据的相干联合传输。
其中，方法和装置是基于同一申请构思的，由于方法和装置解决问题的原理相似，因此装置和方法的实施可以相互参见，重复之处不再赘述。
为便于充分理解本公开的技术方案，现对以下内容进行介绍：
当前的5G NR系统，支持多点协作的PDSCH传输技术。包括以下几种方案：
PDSCH的SDM(Space Division Multiplex，空分复用)传输的方案，此方案中PDSCH的两个不同的数据流从两个TRP同时发送，占用相同的时频资源；
PDSCH的FDM(Frequency Division Multiplex，频分复用)传输方案，此方案通过PDSCH在频域重复传输以进一步改善URLLC(Ultra-Reliable Low-Latency Communication，低时延高可靠通信)传输的性能；
PDSCH的TDM(Time Division Multiplex，时分复用)传输方案(包括时隙内的TDM和时隙间的TDM)，此方案通过PDSCH在时域的重复传输以进一步改善URLLC传输的性能。
图1是本公开实施例提供的相干联合传输方法的流程示意图之一。如图1所示，本公开实施例提供一种相干联合传输方法，其执行主体可以为终端，例如，手机等。该方法包括：
步骤110、接收网络设备发送的MAC-CE(Media Access Control Control Element，媒体接入控制单元)信令或第一DCI(Downlink Control Information，下行链路控制信息)信令，MAC-CE信令或第一DCI信令用于指示目标TCI(Transmission Configurationin Indicator，传输配置指示)状态信息；
步骤120、基于目标TCI状态信息进行数据的相干联合传输；
其中，目标TCI状态信息包括N个目标TCI状态，目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
在步骤110中，终端可以接收网络设备发送的MAC-CE信令，该MAC-CE信令可以激活一组或多组TCI状态信息。以表1为例，表1为MAC-CE信令激活的一组TCI状态信息的示例。在表1中，MAC-CE信令激活的一组TCI状态信息包括8个TCI状态信息，其中，每个码点对应一个TCI状态信息，每个TCI状态信息对应1个或2个(也可以是更多个，表1仅用于示例)目标TCI状态。当目标TCI状态为上下行联合TCI状态时，目标TCI状态既可 以用于下行传输，也可以用于上行传输。
表1 MAC-CE信令激活TCI状态信息示例表1
需要说明的是，为了保证网络设备与终端之间的相干联合传输，还需要从MAC-CE激活的该组TCI状态信息中确定用于进行数据的相干联合传输的目标TCI状态信息。
此时，终端仍可以通过接收网络设备发送的MAC-CE来确定将该组TCI状态信息中的哪一个作为目标TCI状态信息。其中，MAC-CE可以是与激活一组或多组TCI状态信息的MAC-CE相同，也可以是网络设备发送给终端的专用MAC-CE。
可选地，终端还可以通过接收网络设备发送的第一DCI信令，来确定将该组TCI状态信息中的哪一个作为目标TCI状态信息。
例如，第一DCI信令可以根据TCI指示域的取值从激活的TCI状态信息组中选择码点进行TCI状态指示。例如，TCI指示域中取值对应码点P3，则网络设备向终端指示了包含两个目标TCI状态TCI_7和TCI_9的目标TCI状态信息。
需要说明的是，当MAC-CE或者第一DCI指示的目标TCI状态信息包括1个目标TCI状态时，例如包含{TCI_2}的目标TCI状态信息、包含{TCI_3}的目标TCI状态信息等，则终端会直接基于目标TCI状态信息中的单个目标TCI状态进行数据的相干联合传输。
当MAC-CE或者第一DCI指示的目标TCI状态信息包括2个或更多个目标TCI状态时，则网络设备会进一步指示终端是否基于目标TCI状态信息进行数据的相干联合传输，和/或具体基于目标TCI状态信息中的哪些目标TCI状态进行数据的相干联合传输。网络设备与终端也可以基于预定的方式，来基于目标TCI状态信息进行数据的相干联合传输。
在步骤120中，当确定目标TCI状态信息后，终端会基于该目标TCI状态信息，来与网络设备进行数据的相干联合传输。即，终端会基于目标TCI状态信息中的多个目标TCI状态，使用多个TRP同时与网络设备进行同一数据流的传输。
需要说明的是，一个目标TCI状态可以对应一个TRP，当采用多个目标TCI状态进行相干联合传输时，即可实现multi-TRP场景下数据的相干联合传输。
本公开实施例提供的相干联合传输方法，通过MAC-CE信令或DCI信令向终端指示目标TCI状态信息，以便终端和网络设备基于目标TCI状态信息中的多个目标TCI状态实现multi-TRP场景下数据的相干联合传输，提高了通信系统的数据传输性能和灵活性。
在一个实施例中，当N为2时，即目标TCI状态信息包括2个目标TCI状态时，需要网络设备进一步指示终端是否基于目标TCI状态信息进行数据的相干联合传输，和/或具体基于目标TCI状态信息中的哪些目标TCI状态进行数据的相干联合传输，因此在步骤120之前，本公开实施例提供的相干联合传输方法还可以包括：
接收网络设备发送的第二DCI信令；该第二DCI信令用于通过以下至少一种方式向终端指示进行数据的相干联合传输：
方式1、第二DCI信令包含第一信息域，该第一信息域用于指示基于目标TCI状态信息进行数据的相干联合传输。
第二DCI信令可以包含一个第一信息域，该第一信息域可以用于显式指示终端基于目标TCI状态信息进行相干联合传输。
例如，该第一信息域的取值可以用于指示是否采用相干联合传输。该第 一信息域可以使用1比特位宽，当该第一信息域取值为“0”时表示不采用相干联合传输，当该第一信息域取值为“1”时表示采用相干联合传输。或者，当该第一信息域取值为“1”时表示不采用相干联合传输，当该第一信息域取值为“0”时表示采用相干联合传输。
方式2、第二DCI信令包含资源分配域，资源分配域中的目标TCI状态信息的重复次数为1，目标TCI状态信息的重复次数用于指示基于目标TCI状态信息进行数据的相干联合传输。
例如，可以利用第二DCI信令中的时域资源分配域(Time Domain Resource Assignment，TDRA)来指示是否基于目标TCI状态信息进行数据的相干联合传输。时域资源分配域对应有资源分配参数列表，如表2所示。
表2 资源分配参数列表1
表2中的每一行对应一组参数取值，包括时隙偏移、起始符号和长度、PDSCH映射类型和重复次数等。该资源分配参数列表由高层参数RRC进行配置，或者由系统预定义。需要说明的是，本文表格中涉及的“XXX”表示相关参数取值已由相关的标准协议给出，本公开实施例中不再进行详细介绍。
可以具体利用资源分配参数列表中的重复次数的取值来指示是否基于目标TCI状态信息进行数据的相干联合传输。
例如，当重复次数配置为1时，表示此行对应的目标TCI状态信息用于相干联合传输。以表2为例，当时域资源分配域的取值对应码点P1时，则基于目标TCI状态信息进行相干联合传输。当对应其他码点时，则不采用相干联合传输。
当然，也可以将重复次数配置为2、8、4等才进行联合相干传输。本公开实施例对此不做具体限定。
方式3、第二DCI信令包含资源分配域，资源分配域包括目标参数，目标参数的取值用于指示基于目标TCI状态信息进行数据的相干联合传输；
可以在时域资源分配域对应的资源分配参数列表中引入目标参数，如表3所示，并基于该目标参数的取值来指示是否基于目标TCI状态信息进行数据的相干联合传输。
表3 资源分配参数列表2
其中，目标参数的取值为0表示不采用相干联合传输，取值为1表示采用相干联合传输。例如当时域资源分配域的取值对应码点P2或者P3时，则采用相干联合传输。当对应码点P1或者P4时，则不采用相干联合传输。
当然，还可以将目标参数的取值设置为1时表示不采用相干联合传输，设置为0时表示采用相干联合传输。本公开实施例对此不做具体限定。
方式4、第二DCI信令指示的DMRS(Demodulation Reference Signal，解调参考信号)的CDM(Code Division Multiplexing，码分复用)组数大于2，DMRS的CDM组数用于指示基于目标TCI状态信息进行数据的相干联合传输。
需要说明的是，当前的5G系统中，DMRS配置类型2包含3个码分复用组，即CDM组。在DCI的天线端口指示域中，当指示3个及以上DMRS端口时，约束DMRS端口分布在3个CDM组中。
可以设置成当DMRS的CDM组数大于2时，基于目标TCI状态信息进行数据的相干联合传输。
方式5、第二DCI信令包含第二信息域，第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；第一TCI状态为N个目标TCI状态 中的至少之一；
可以在第二DCI信令中引入第二信息域，该第二信息域的取值除了指示当前是否采用相干联合传输外，还用于指示采用那些目标TCI状态进行相干联合传输。以表4为例，第二信息域可以包含2比特，并且不同取值对应不同的指示。
表4 第二信息域取值示例表
当然，第二信息域还可以包含其他数量的比特，例如4比特、8比特等，并且各种取值可对应采用不同的目标TCI状态进行相干联合传输。本公开实施例对此不做具体限定。
方式6、第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
可以将第二DCI信令中的现有的一个或多个信息域的特殊取值，用于指示相干联合传输。例如采用RV域、NDI域、HARQ进程数域中的一个或多个的取值的组合来指示相干联合传输。
需要说明的是，第二DCI信令可以是与指示目标TCI状态信息的第一DCI信令相同的DCI信令，也可以是网络设备发送给终端的专用DCI信令。
即，在N为2的情况下，终端可以接收网络设备发送的第一DCI信令，第一DCI信令用于指示目标TCI状态信息，并且还通过上述至少一种方式向终端指示基于目标TCI状态信息进行数据的相干联合传输，和/或基于目标TCI状态信息中的哪些目标TCI状态进行数据的相干联合传输。或者，终端 可以在接收网络设备发送的第一DCI信令之后，再接收网络设备发送的第二DCI信令，该第二DCI信令通过上述至少一种方式向终端指示基于目标TCI状态信息进行数据的相干联合传输，和/或基于目标TCI状态信息中的哪些目标TCI状态进行数据的相干联合传输。
本公开实施例提供的相干联合传输方法，在目标TCI状态信息包括2个目标TCI状态的情况下，通过DCI信令以各种方式向终端指示进行数据的相干联合传输，可以确保在各种场景下都能实现在目标TCI状态信息包括2个目标TCI状态条件下的相干联合传输，有效提高了系统的实用性。
在一个实施例中，当N为2时，即目标TCI状态信息包括2个目标TCI状态时，在步骤120之前，所述方法还包括：
确定2个目标TCI状态的QCL(Quasi Co-Location，准共址)类型不同。
需要说明的是，5G系统中支持4种QCL类型，包括QCL类型A/B/C/D，下行TCI状态中包含最多两个QCL类型。
例如，目标TCI状态包括2个目标TCL状态TCL_1和TCL_2：TCI_1中包含QCL类型A，TCI_2中包含QCL类型B，则此时可以确定目标TCL状态TCL_1的QCL类型与目标TCL状态TCL_2的QCL类型不同，终端会基于目标TCI状态信息进行数据的相干联合传输。
又例如，TCI_1中包含QCL类型A+QCL类型D，TCI_2中包含QCL类型B+QCL类型D，则此时同样可以确定目标TCL状态TCL_1的QCL类型与目标TCL状态TCL_2的QCL类型不同，终端会基于目标TCI状态信息进行数据的相干联合传输。
本公开实施例提供的相干联合传输方法，在目标TCI状态信息包括2个目标TCI状态的情况下，通过判断2个目标TCI状态的QCL类型是否相同来进行数据的相干联合传输，可以有效节约信令资源并提高系统的实用性。
在一个实施例中，当N为2时，即目标TCI状态信息包括2个目标TCI状态时，在步骤120之前，本公开实施例提供的相干联合传输方法还可以包括：
接收网络设备发送的高层信令；该高层信令用于指示基于目标TCI状态 信息进行数据的相干联合传输。
在目标TCI状态信息包括2个目标TCI状态时，终端可以接收网络设备发送的高层信令，例如RRC信令等，来获得基于目标TCI状态信息进行数据的相干联合传输的指示。
当高层信令为RRC信令时，可以在RRC信令中引入例如参数“CJTenable”等，并根据该参数的取值来指示采用相干联合传输。
例如，当参数“CJTenable”的取值为“1”时，则指示采用联合相干传输，当参数“CJTenable”的取值为“0”时，则指示不采用联合相干传输。
本公开实施例提供的相干联合传输方法，在目标TCI状态信息包括2个目标TCI状态的情况下，通过高层信令来向终端指示进行数据的相干联合传输，可以有效提高系统的实用性。
在一个实施例中，当N大于2时，即目标TCI状态信息包括2个以上的目标TCI状态时，步骤120可以如下至少一种方式实现：
方式A：基于目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
方式B：基于目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于N个目标TCI状态中各目标TCI状态的QCL类型确定M个第二TCI状态，基于第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；目标信道为除PDSCH之外的信道。
例如，终端可以接收网络设备发送的MAC-CE信令，该MAC-CE信令可以激活一组或多组TCI状态信息。以表5为例，表5为MAC-CE信令激活的一组TCI状态信息的示例。在表5中，MAC-CE信令激活的一组TCI状态信息包括4个TCI状态信息，其中，每个码点对应一个TCI状态信息，每个TCI状态信息对应最多4个下行TCI状态(表示为TCI)和最多2个上行TCI状态(表示为UTCI)。上行TCI状态用于上行传输。
表5 MAC-CE信令激活TCI状态信息示例表2

DCI信令根据TCI指示域的取值从此激活的TCI状态信息组中选择码点进行TCI状态信息指示。例如，TCI指示域中取值对应码点P1，则网络设备向终端指示了4个下行TCI状态TCI_1、TCI_5、TCI_4和TCI_11，以及2个上行TCI状态UTCI_2和UTCI_6。
PDSCH的相干联合传输可以使用4个下行TCI状态，但5G系统中不支持其他信道(PDCCH(Physical Downlink Control Channel，物理下行控制信道)/PUSCH(Physical Uplink Shared Channel，物理上行共享信道)/PUCCH(Physical Uplink Control Channel，物理上行控制信道))和参考信号(CSI-RS(Channel State Information-Reference Signal，信道状态信息参考信号)/SRS(Sounding Reference Signal，信道探测参考信号))使用多于2个TCI状态。
为了区别不同信道使用的TCI状态，终端可以采用方式A来基于目标TCI状态信息与网络设备进行数据的相干联合传输。
即，系统预定义全部的下行TCI状态用于PDSCH的相干联合传输。例如，PDSCH将使用TCI_1、TCI_5、TCI_4和TCI_11进行联合相干传输。而系统预定义码点中的前两个(即指定位置)下行TCI状态用于PDCCH和CSI-RS的传输，即对于PDCCH/CSI-RS将采用TCI_1和TCI_5进行传输。由于P1对应2个上行TCI状态，则PUSCH/PUCCH/SRS将使用UTCI_2和UTCI_6进行传输。
再以表6为例，表6为MAC-CE信令激活的一组TCI状态信息的示例。在表6中，MAC-CE信令激活的一组TCI状态信息包括4个TCI状态信息，其中，每个码点对应一个TCI状态信息，每个TCI状态信息对应最多4个联合上下行TCI状态(表示为TCI)。
表6 MAC-CE信令激活TCI状态信息示例表3

当TCI指示域中取值对应码点P1时，终端采用方式A来基于目标TCI状态信息与网络设备进行数据的相干联合传输的情况如下：
PDSCH将使用TCI_1、TCI_5、TCI_4和TCI_11进行联合相干传输。系统预定义码点中的前两个联合上下行TCI状态用于其他信道/参考信号的传输，即，对于PDCCH/PUSCH/PUCCH/CSI-RS/SRS将采用TCI_1和TCI_5进行传输。
本公开实施例提供的相干联合传输方法，在目标TCI状态信息包括2个以上目标TCI状态的情况下，通过使全部的目标TCI状态进行数据的相干联合传输，并使指定位置的第二TCI状态进行目标信道以及参考信号的传输，可以保证PDSCH与目标信道以及参考信号的传输的相对独立性，从提高系统数据传输的灵活性。
需要说明的是，5G系统中支持4种QCL类型，包括QCL类型A/B/C/D，下行TCI状态中包含最多两个QCL类型。系统约定QCL类型B/C不能用于除PDSCH之外的其他信道/参考信号传输。基于此，本公开实施例提供的相干联合传输方法中，终端还可以采用方式B来基于目标TCI状态信息与网络设备进行数据的相干联合传输。
例如，一种网络设备配置为：
TCI_1中包含QCL类型A+QCL类型D；
TCI_5中包含QCL类型B；
TCI_4中包含QCL类型A+QCL类型D；
TCI_11中包含QCL类型B。
则PDCCH/CSI-RS将采用TCI_1和TCI_4进行传输，PDSCH将使用TCI_1、TCI_5、TCI_4和TCI_11进行联合相干传输。
再例如，一种网络设备配置为：
TCI_1中包含QCL类型A+QCL类型D；
TCI_5中包含QCL类型B+QCL类型D；
TCI_4中包含QCL类型A+QCL类型D；
TCI_11中包含QCL类型B+QCL类型D。
则PDCCH/PUSCH/PUCCH/CSI-RS/SRS将采用TCI_1和TCI_4进行传输，PDSCH将使用TCI_1、TCI_5、TCI_4和TCI_11进行联合相干传输。
从以上示例可以总结出，当采用方式B来基于目标TCI状态信息与网络设备进行数据的相干联合传输时，目标TCI状态信息中的M个第二TCI状态的QCL类型，与目标TCI状态信息中的N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同，并且目标TCI状态信息中的N-M个目标TCI状态的QCL类型为QCL类型B或QCL类型C中的至少一项。
本公开实施例提供的相干联合传输方法，在目标TCI状态信息包括2个以上目标TCI状态的情况下，通过使全部的目标TCI状态进行数据的相干联合传输，并使具有指定QCL类型的第二TCI状态进行目标信道以及参考信号的传输，可以保证PDSCH与目标信道以及参考信号的传输的相对独立性，从而提高系统数据传输的灵活性。
在一个实施例中，当N大于2时，即目标TCI状态信息包括2个以上的目标TCI状态时，在步骤120之前，本公开实施例提供的相干联合传输方法，还可以包括：
接收网络设备发送的第二DCI信令，该第二DCI信令包括第三信息域，第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；第一TCI状态为N个目标TCI状态中的至少之一。
可以在第二DCI信令中引入第三信息域，该信息域的取值除了指示采用目标TCI状态信息进行相干联合传输，还用于指示采用目标TCI状态信息中的哪些目标TCI状态进行相干联合传输。
例如，当TCI指示域中取值对应表6中的码点P1时，第三信息域可以包含4个比特，其取值可以为例如“0111”，用于指示使用TCI_5、TCI_4和TCI_11进行PDSCH的联合相干传输，其中，“1”用于指示对应的目标TCI状态用 于相干联合传输，“0”用于指示对应的目标TCI状态不用于相干联合传输。第三信息域的取值还可以为例如“0110”，用于指示使用TCI_1和TCI_11进行PDSCH的联合相干传输，其中，“0”用于指示对应的目标TCI状态用于相干联合传输，“1”用于指示对应的目标TCI状态不用于相干联合传输。本公开实施例对第三信息域的取值，以及取值对应的是否使用目标TCI状态的指示不做具体限定。
本公开实施例提供的相干联合传输方法，通过在目标TCI状态信息包括2个以上目标TCI状态的情况下，通过DCI信令向终端直接指示利用哪些目标TCI状态进行数据的相干联合传输，可以确保在各种场景下都能实现相干联合传输，有效提高了系统的实用性。
在一个实施例中，第三信息域还可以用于指示进行目标信道以及参考信号的传输的第二TCI状态；第二TCI状态为N个目标TCI状态中的至少之一，目标信道为除PDSCH之外的信道。
例如，当TCI指示域中取值对应表6中的码点P1时，第三信息域可以包含8个比特，其中，前4个比特对应采用联合传输对应的目标TCI状态，后4个比特对应其他信道/参考信号使用的TCI状态。例如，第三信息域的取值可以为例如“01110011”，则指示PDSCH将使用TCI_5、TCI_4和TCI_11进行联合相干传输，PDCCH/CSI-RS将采用TCI_4和TCI_11进行传输。
本公开实施例提供的相干联合传输方法，通过在目标TCI状态信息包括2个以上目标TCI状态的情况下，通过DCI信令向终端直接指示利用哪些目标TCI状态进行数据的相干联合传输，以及利用哪些第二TCI状态进行目标信道以及参考信号的传输，可以确保在各种场景下都能实现相干联合传输，可以保证PDSCH与目标信道以及参考信号的传输的相对独立性，从提高系统数据传输的灵活性。
图2是本公开实施例提供的相干联合传输方法的流程示意图之二。如图2所示，本公开实施例提供一种相干联合传输方法，其执行主体可以为网络设备，例如基站等。该方法包括：
步骤210、向终端发送MAC-CE信令或第一DCI信令，MAC-CE信令或 第一DCI信令用于指示目标TCI状态信息；
步骤220、基于目标TCI状态信息进行数据的相干联合传输；
其中，目标TCI状态信息包括N个目标TCI状态，目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
在步骤210中，网络设备可以向终端发送MAC-CE信令，该MAC-CE信令可以激活一组或多组TCI状态信息。以表1为例，表1为MAC-CE信令激活的一组TCI状态信息的示例。在表1中，MAC-CE信令激活的一组TCI状态信息包括8个TCI状态信息，其中，每个码点对应一个TCI状态信息，每个TCI状态信息对应1个或2个(也可以是更多个，表1仅用于示例)目标TCI状态。当目标TCI状态为上下行联合TCI状态时，目标TCI状态既可以用于下行传输，也可以用于上行传输。
表1MAC-CE信令激活TCI状态信息示例表1
需要说明的是，为了保证网络设备与终端之间的相干联合传输，还需要从MAC-CE激活的该组TCI状态信息中确定用于进行数据的相干联合传输的目标TCI状态信息。
此时，网络设备仍可以通过向终端发送MAC-CE来确定将该组TCI状态信息中的哪一个作为目标TCI状态信息。其中，MAC-CE可以是与激活一组或多组TCI状态信息的MAC-CE相同，也可以是网络设备发送给终端的专用MAC-CE。
可选地，网路设备还可以通过向终端发送第一DCI信令，来确定将该组TCI状态信息中的哪一个作为目标TCI状态信息。
例如，第一DCI信令可以根据TCI指示域的取值从激活的TCI状态信息组中选择码点进行TCI状态指示。例如，TCI指示域中取值对应码点P3，则网络设备向终端指示了包含两个目标TCI状态TCI_7和TCI_9的目标TCI状态信息。
需要说明的是，当MAC-CE或者第一DCI指示的目标TCI状态信息包括1个目标TCI状态时，例如包含{TCI_2}的目标TCI状态信息、包含{TCI_3}的目标TCI状态信息等，则终端会直接基于目标TCI状态信息中的单个目标TCI状态进行数据的相干联合传输。
当MAC-CE或者第一DCI指示的目标TCI状态信息包括2个或更多个目标TCI状态时，则网络设备会进一步指示终端是否基于目标TCI状态信息进行数据的相干联合传输，和/或具体基于目标TCI状态信息中的哪些目标TCI状态进行数据的相干联合传输。网络设备与终端也可以基于预定的方式，来基于目标TCI状态信息进行数据的相干联合传输。
在步骤120中，当向终端指示目标TCI状态信息后，网络设备会基于该目标TCI状态信息，来与终端进行数据的相干联合传输。即，网络设备会基于目标TCI状态信息中的一个或多个目标TCI状态，使用多个TRP同时与终端进行同一数据流的传输。
本公开实施例提供的相干联合传输方法，通过MAC-CE信令或DCI信令向终端指示目标TCI状态信息，以便终端和网络设备基于目标TCI状态进行数据的相干联合传输，可以实现multi-TRP场景下数据的相干联合传输，提高了通信系统的数据传输性能和灵活性。
在一个实施例中，当N为2时，即目标TCI状态信息包括2个目标TCI状态时，需要网络设备进一步指示终端是否基于目标TCI状态信息进行数据的相干联合传输，和/或具体基于目标TCI状态信息中的哪些目标TCI状态进行数据的相干联合传输，因此在步骤120之前，本公开实施例提供的相干联合传输方法还可以包括：
向终端发送第二DCI信令；该第二DCI信令用于通过以下至少一种方式向终端指示进行数据的相干联合传输：
方式1、第二DCI信令包含第一信息域，该第一信息域用于指示基于目标TCI状态信息进行数据的相干联合传输。
第二DCI信令可以包含一个第一信息域，该第一信息域可以用于显式指示终端基于目标TCI状态信息进行相干联合传输。
例如，该第一信息域的取值可以用于指示是否采用相干联合传输。该第一信息域可以使用1比特位宽，当该第一信息域取值为“0”时表示不采用相干联合传输，当该第一信息域取值为“1”时表示采用相干联合传输。或者，当该第一信息域取值为“1”时表示不采用相干联合传输，当该第一信息域取值为“0”时表示采用相干联合传输。
方式2、第二DCI信令包含资源分配域，资源分配域中的目标TCI状态信息的重复次数为1，目标TCI状态信息的重复次数用于指示基于目标TCI状态信息进行数据的相干联合传输。
例如，可以利用第二DCI信令中的时域资源分配域(Time Domain Resource Assignment，TDRA)来指示是否基于目标TCI状态信息进行数据的相干联合传输。时域资源分配域对应有资源分配参数列表，如表2所示。
表2资源分配参数列表1
表2中的每一行对应一组参数取值，包括时隙偏移、起始符号和长度、PDSCH映射类型和重复次数等。该资源分配参数列表由高层参数RRC进行配置，或者由系统预定义。
可以具体利用资源分配参数列表中的重复次数的取值来指示是否基于目标TCI状态信息进行数据的相干联合传输。
例如，当重复次数配置为1时，表示此行对应的目标TCI状态信息用于相干联合传输。以表2为例，当时域资源分配域的取值对应码点P1时，则基于目标TCI状态信息进行相干联合传输。当对应其他码点时，则不采用相干联合传输。
当然，也可以将重复次数配置为2、8、4等才进行联合相干传输。本公开实施例对此不做具体限定。
方式3、第二DCI信令包含资源分配域，资源分配域包括目标参数，目标参数的取值用于指示基于目标TCI状态信息进行数据的相干联合传输；
可以在时域资源分配域对应的资源分配参数列表中引入目标参数，如表3所示，并基于该目标参数的取值来指示是否基于目标TCI状态信息进行数据的相干联合传输。
表3资源分配参数列表2
其中，目标参数的取值为0表示不采用相干联合传输，取值为1表示采用相干联合传输。例如当时域资源分配域的取值对应码点P2或者P3时，则采用相干联合传输。当对应码点P1或者P4时，则不采用相干联合传输。
当然，还可以将目标参数的取值设置为1时表示不采用相干联合传输，设置为0时表示采用相干联合传输。本公开实施例对此不做具体限定。
方式4、第二DCI信令指示的DMRS(Demodulation Reference Signal，解调参考信号)的CDM(Code Division Multiplexing，码分复用)组数大于2，DMRS的CDM组数用于指示基于目标TCI状态信息进行数据的相干联合传输。
需要说明的是，当前的5G系统中，DMRS配置类型2包含3个码分复 用组，即CDM组。在DCI的天线端口指示域中，当指示3个及以上DMRS端口时，约束DMRS端口分布在3个CDM组中。
可以设置成当DMRS的CDM组数大于2时，基于目标TCI状态信息进行数据的相干联合传输。
方式5、第二DCI信令包含第二信息域，第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；第一TCI状态为N个目标TCI状态中的至少之一；
可以在第二DCI信令中引入第二信息域，该第二信息域的取值除了指示当前是否采用相干联合传输外，还用于指示采用那些目标TCI状态进行相干联合传输。以表4为例，第二信息域可以包含2比特，并且不同取值对应不同的指示。
表4第二信息域取值示例表
当然，第二信息域还可以包含其他数量的比特，例如4比特、8比特等，并且各种取值可对应采用不同的目标TCI状态进行相干联合传输。本公开实施例对此不做具体限定。
方式6、第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
可以将第二DCI信令中的现有的一个或多个信息域的特殊取值，用于指示相干联合传输。例如采用RV域、NDI域、HARQ进程数域中的一个或多个的取值的组合来指示相干联合传输。
需要说明的是，第二DCI信令可以是与指示目标TCI状态信息的第一DCI信令相同的DCI信令，也可以是网络设备发送给终端的专用DCI信令。
即，在N为2的情况下，网络设备可以向终端发送第一DCI信令，第一DCI信令用于指示目标TCI状态信息，并且还通过上述至少一种方式向终端指示基于目标TCI状态信息进行数据的相干联合传输，和/或基于目标TCI状态信息中的哪些目标TCI状态进行数据的相干联合传输。或者，网络设备可以在向终端发送第一DCI信令之后，再向终端发送的第二DCI信令，该第二DCI信令通过上述至少一种方式向终端指示基于目标TCI状态信息进行数据的相干联合传输，和/或基于目标TCI状态信息中的哪些目标TCI状态进行数据的相干联合传输。
本公开实施例提供的相干联合传输方法，在目标TCI状态信息包括2个目标TCI状态的情况下，通过DCI信令以各种方式向终端指示进行数据的相干联合传输，可以确保在各种场景下都能实现在目标TCI状态信息包括2个目标TCI状态条件下的相干联合传输，有效提高了系统的实用性。
在一个实施例中，当N为2时，即目标TCI状态信息包括2个目标TCI状态时，在步骤120之前，所述方法还包括：
确定2个目标TCI状态的QCL(Quasi Co-Location，准共址)类型不同。
需要说明的是，5G系统中支持4种QCL类型，包括QCL类型A/B/C/D，下行TCI状态中包含最多两个QCL类型。
例如，目标TCI状态包括2个目标TCL状态TCL_1和TCL_2：TCI_1中包含QCL类型A，TCI_2中包含QCL类型B，则此时可以确定目标TCL状态TCL_1的QCL类型与目标TCL状态TCL_2的QCL类型不同，网络设备会基于目标TCI状态信息进行数据的相干联合传输。
又例如，TCI_1中包含QCL类型A+QCL类型D，TCI_2中包含QCL类型B+QCL类型D，则此时同样可以确定目标TCL状态TCL_1的QCL类型与目标TCL状态TCL_2的QCL类型不同，网络设备会基于目标TCI状态信息进行数据的相干联合传输。
本公开实施例提供的相干联合传输方法，在目标TCI状态信息包括2个 目标TCI状态的情况下，通过判断2个目标TCI状态的QCL类型是否相同来进行数据的相干联合传输，可以有效节约信令资源并提高系统的实用性。
在一个实施例中，当N为2时，即目标TCI状态信息包括2个目标TCI状态时，在步骤120之前，本公开实施例提供的相干联合传输方法还可以包括：
通过高层信令向终端发送高层信令；该高层信令用于指示终端基于目标TCI状态信息进行数据的相干联合传输。
在目标TCI状态信息包括2个目标TCI状态时，网络设备可以向终端发送高层信令，例如RRC信令等，来指示基于目标TCI状态信息进行数据的相干联合传输。
当高层信令为RRC信令时，可以在RRC信令中引入例如参数“CJTenable”等，并根据该参数的取值来指示采用相干联合传输。
例如，当参数“CJTenable”的取值为“1”时，则指示采用联合相干传输，当参数“CJTenable”的取值为“0”时，则指示不采用联合相干传输。
本公开实施例提供的相干联合传输方法，在目标TCI状态信息包括2个目标TCI状态的情况下，通过高层信令来向终端指示进行数据的相干联合传输，可以有效提高系统的实用性。
在一个实施例中，当N大于2时，即目标TCI状态信息包括2个以上的目标TCI状态时，步骤120可以如下至少一种方式实现：
方式A：基于目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
方式B：基于目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于N个目标TCI状态中各目标TCI状态的QCL(Quasi Co-Location，准共址)类型确定M个第二TCI状态，基于第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；目标信道为除PDSCH之外的信道。
例如，网络设备可以向终端发送MAC-CE信令，该MAC-CE信令可以 激活一组或多组TCI状态信息。以表5为例，表5为MAC-CE信令激活的一组TCI状态信息的示例。在表5中，MAC-CE信令激活的一组TCI状态信息包括4个TCI状态信息，其中，每个码点对应一个TCI状态信息，每个TCI状态信息对应最多4个下行TCI状态(表示为TCI)和最多2个上行TCI状态(表示为UTCI)。上行TCI状态用于上行传输。
表5MAC-CE信令激活TCI状态信息示例表2
DCI信令根据TCI指示域的取值从此激活的TCI状态信息组中选择码点进行TCI状态信息指示。例如，TCI指示域中取值对应码点P1，则网络设备向终端指示了4个下行TCI状态TCI_1、TCI_5、TCI_4和TCI_11，以及2个上行TCI状态UTCI_2和UTCI_6。
PDSCH的相干联合传输可以使用4个下行TCI状态，但5G系统中不支持其他信道(PDCCH(Physical Downlink Control Channel，物理下行控制信道)/PUSCH(Physical Uplink Shared Channel，物理上行共享信道)/PUCCH(Physical Uplink Control Channel，物理上行控制信道))和参考信号(CSI-RS(Channel State Information-Reference Signal，信道状态信息参考信号)/SRS(Sounding Reference Signal，信道探测参考信号))使用多于2个TCI状态。
为了区别不同信道使用的TCI状态，网络设备可以采用方式A来基于目标TCI状态信息与终端进行数据的相干联合传输。
即，系统预定义全部的下行TCI状态用于PDSCH的相干联合传输。例如，PDSCH将使用TCI_1、TCI_5、TCI_4和TCI_11进行联合相干传输。而系统预定义码点中的前两个(即指定位置)下行TCI状态用于PDCCH和CSI-RS的传输，即对于PDCCH/CSI-RS将采用TCI_1和TCI_5进行传输。由于P1对应2个上行TCI状态，则PUSCH/PUCCH/SRS将使用UTCI_2和 UTCI_6进行传输。
再以表6为例，表6为MAC-CE信令激活的一组TCI状态信息的示例。在表6中，MAC-CE信令激活的一组TCI状态信息包括4个TCI状态信息，其中，每个码点对应一个TCI状态信息，每个TCI状态信息对应最多4个联合上下行TCI状态(表示为TCI)。
表6MAC-CE信令激活TCI状态信息示例表3
当TCI指示域中取值对应码点P1时，网络设备采用方式A来基于目标TCI状态信息与终端进行数据的相干联合传输的情况如下：
PDSCH将使用TCI_1、TCI_5、TCI_4和TCI_11进行联合相干传输。系统预定义码点中的前两个联合上下行TCI状态用于其他信道/参考信号的传输，即，对于PDCCH/PUSCH/PUCCH/CSI-RS/SRS将采用TCI_1和TCI_5进行传输。
本公开实施例提供的相干联合传输方法，在目标TCI状态信息包括2个以上目标TCI状态的情况下，通过使全部的目标TCI状态进行数据的相干联合传输，并使指定位置的第二TCI状态进行目标信道以及参考信号的传输，可以保证PDSCH与目标信道以及参考信号的传输的相对独立性，从提高系统数据传输的灵活性。
需要说明的是，5G系统中支持4种QCL类型，包括QCL类型A/B/C/D，下行TCI状态中包含最多两个QCL类型。系统约定QCL类型B/C不能用于除PDSCH之外的其他信道/参考信号传输。基于此，本公开实施例提供的相干联合传输方法中，网络设备还可以采用方式B来基于目标TCI状态信息与终端进行数据的相干联合传输。
例如，一种网络设备配置为：
TCI_1中包含QCL类型A+QCL类型D；
TCI_5中包含QCL类型B；
TCI_4中包含QCL类型A+QCL类型D；
TCI_11中包含QCL类型B。
则PDCCH/CSI-RS将采用TCI_1和TCI_4进行传输，PDSCH将使用TCI_1、TCI_5、TCI_4和TCI_11进行联合相干传输。
再例如，一种网络设备配置为：
TCI_1中包含QCL类型A+QCL类型D；
TCI_5中包含QCL类型B+QCL类型D；
TCI_4中包含QCL类型A+QCL类型D；
TCI_11中包含QCL类型B+QCL类型D。
则PDCCH/PUSCH/PUCCH/CSI-RS/SRS将采用TCI_1和TCI_4进行传输，PDSCH将使用TCI_1、TCI_5、TCI_4和TCI_11进行联合相干传输。
从以上示例可以总结出，当采用方式B来基于目标TCI状态信息与网络设备进行数据的相干联合传输时，目标TCI状态信息中的M个第二TCI状态的QCL类型，与目标TCI状态信息中的N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同，并且目标TCI状态信息中的N-M个目标TCI状态的QCL类型为QCL类型B或QCL类型C中的至少一项。
本公开实施例提供的相干联合传输方法，在目标TCI状态信息包括2个以上目标TCI状态的情况下，通过使全部的目标TCI状态进行数据的相干联合传输，并使具有指定QCL类型的第二TCI状态进行目标信道以及参考信号的传输，可以保证PDSCH与目标信道以及参考信号的传输的相对独立性，从而提高系统数据传输的灵活性。
在一个实施例中，当N大于2时，即目标TCI状态信息包括2个以上的目标TCI状态时，在步骤120之前，本公开实施例提供的相干联合传输方法，还可以包括：
向终端发送第二DCI信令，该第二DCI信令包括第三信息域，第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；第一TCI状态 为N个目标TCI状态中的至少之一。
可以在第二DCI信令中引入第三信息域，该信息域的取值除了指示采用目标TCI状态信息进行相干联合传输，还用于指示采用目标TCI状态信息中的哪些目标TCI状态进行相干联合传输。
例如，当TCI指示域中取值对应表6中的码点P1时，第三信息域可以包含4个比特，其取值可以为例如“0111”，用于指示使用TCI_5、TCI_4和TCI_11进行PDSCH的联合相干传输，其中，“1”用于指示对应的目标TCI状态用于相干联合传输，“0”用于指示对应的目标TCI状态不用于相干联合传输。第三信息域的取值还可以为例如“0110”，用于指示使用TCI_1和TCI_11进行PDSCH的联合相干传输，其中，“0”用于指示对应的目标TCI状态用于相干联合传输，“1”用于指示对应的目标TCI状态不用于相干联合传输。本公开实施例对第三信息域的取值，以及取值对应的是否使用目标TCI状态的指示不做具体限定。
本公开实施例提供的相干联合传输方法，通过在目标TCI状态信息包括2个以上目标TCI状态的情况下，通过DCI信令向终端直接指示利用哪些目标TCI状态进行数据的相干联合传输，可以确保在各种场景下都能实现相干联合传输，有效提高了系统的实用性。
在一个实施例中，第三信息域还可以用于指示进行目标信道以及参考信号的传输的第二TCI状态；第二TCI状态为N个目标TCI状态中的至少之一，目标信道为除PDSCH之外的信道。
例如，当TCI指示域中取值对应表6中的码点P1时，第三信息域可以包含8个比特，其中，前4个比特对应采用联合传输对应的目标TCI状态，后4个比特对应其他信道/参考信号使用的TCI状态。例如，第三信息域的取值可以为例如“01110011”，则指示PDSCH将使用TCI_5、TCI_4和TCI_11进行联合相干传输，PDCCH/CSI-RS将采用TCI_4和TCI_11进行传输。
本公开实施例提供的相干联合传输方法，通过在目标TCI状态信息包括2个以上目标TCI状态的情况下，通过DCI信令向终端直接指示利用哪些目标TCI状态进行数据的相干联合传输，以及利用哪些第二TCI状态进行目标 信道以及参考信号的传输，可以确保在各种场景下都能实现相干联合传输，可以保证PDSCH与目标信道以及参考信号的传输的相对独立性，从提高系统数据传输的灵活性。
图3是本公开实施例提供的一种终端的结构示意图，如图3所示，所述终端包括存储器320，收发机300，处理器310，其中：
存储器320，用于存储计算机程序；收发机300，用于在所述处理器310的控制下收发数据；处理器310，用于读取所述存储器320中的计算机程序并执行以下操作：
接收网络设备发送的媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
基于所述目标TCI状态信息进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
其中，在图3中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器310代表的一个或多个处理器和存储器320代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机300可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括无线信道、有线信道、光缆等传输介质。针对不同的用户设备，用户接口330还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器310负责管理总线架构和通常的处理，存储器320可以存储处理器310在执行操作时所使用的数据。
可选的，处理器310可以是中央处理器(Central Processing Unit,CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门 阵列(Field-Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)，处理器也可以采用多核架构。
处理器通过调用存储器存储的计算机程序，用于按照获得的可执行指令执行本公开实施例提供的任一所述方法。处理器与存储器也可以物理上分开布置。
在一个实施例中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述处理器310还用于：接收所述网络设备发送的第二DCI信令；
所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器310还用于：
确定2个目标TCI状态的准共址QCL类型不同。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器310还用于：
接收所述网络设备发送的高层信令；所述高层信令用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输，包括以下至少一项：
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器310还用于：
接收所述网络设备发送的第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
在一个实施例中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
在一个实施例中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
在一个实施例中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
在此需要说明的是，本公开实施例提供的上述终端，能够实现上述执行主体为终端的方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
图4是本公开实施例提供的网络设备的结构示意图，如图4所示，所述网络设备包括存储器420，收发机400，处理器410，其中：
存储器420，用于存储计算机程序；收发机400，用于在所述处理器410的控制下收发数据；处理器410，用于读取所述存储器420中的计算机程序并执行以下操作：
向终端发送媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
基于所述目标TCI状态信息与进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
具体地，收发机400，用于在处理器410的控制下接收和发送数据。
其中，在图4中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器410代表的一个或多个处理器和存储器420代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机400可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器410负责管理总线架构和通常的处理，存储器420可以存储处理器410在执行操作时所使用的数据。
处理器410可以是中央处理器(Central Processing Unit,CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field -Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)，处理器也可以采用多核架构。
在一个实施例中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述处理器410还用于：向所述终端发送第二DCI信令；
所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器410还用于：
确定2个目标TCI状态的准共址QCL类型不同。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器410还用于：
通过高层信令向所述终端指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输，包括以下至少一项：
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并利用所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并根据所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器410还用于：
向所述终端发送第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
在一个实施例中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
在一个实施例中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
在一个实施例中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
在此需要说明的是，本公开实施例提供的上述网络设备，能够实现上述执行主体为网络设备的方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进 行具体赘述。
图5是本公开实施例提供的相干联合传输装置的结构示意图之一。如图5所示，本公开实施例还提供一种相干联合传输装置，应用于终端，所述装置包括：
接收模块510，用于接收网络设备发送的媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
传输模块520，用于基于所述目标TCI状态信息进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
在一个实施例中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述接收模块510还用于：接收所述网络设备发送的第二DCI信令；
所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述传输模块520还用于：
确定2个目标TCI状态的准共址QCL类型不同。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述接收模块510还用于：
接收所述网络设备发送的高层信令；所述高层信令用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N大于2时，所述传输模块520具体用于执行以下至少一项：
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述接收模块510还用于：
接收所述网络设备发送的第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
在一个实施例中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
在一个实施例中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
在一个实施例中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
在此需要说明的是，本公开实施例提供的上述装置，能够实现上述执行主体为终端的方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
图6是本公开实施例提供的相干联合传输装置的结构示意图之二。如图6所示，本公开实施例还提供一种相干联合传输装置，应用于网络设备，所述装置包括：
发送模块610，用于向终端发送媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
传输模块620，用于基于所述目标TCI状态信息与进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
在一个实施例中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述发送模块610还用于：向所述终端发送第二DCI信令；
所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述 目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述传输模块620还用于：
确定2个目标TCI状态的准共址QCL类型不同。
在一个实施例中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述发送模块610还用于：
通过高层信令向所述终端指示基于所述目标TCI状态信息进行数据的相干联合传输。
在一个实施例中，当N大于2时，所述传输模块620具体用于执行以下至少一项：
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并利用所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干 联合传输，并根据所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
在一个实施例中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述发送模块610还用于：
向所述终端发送第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
在一个实施例中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
在一个实施例中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
在一个实施例中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
在此需要说明的是，本公开实施例提供的上述装置，能够实现上述执行主体为网络设备的方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
需要说明的是，本公开实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个处理器可读取存储介质中。基于这样的理解，本 公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
另一方面，本公开实施例还提供一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行上述各实施例提供的方法，例如包括：
接收网络设备发送的媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
基于所述目标TCI状态信息进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。或者
向终端发送媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
基于所述目标TCI状态信息与进行数据的相干联合传输；
其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
所述处理器可读存储介质可以是处理器能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬 盘(SSD))等。
本公开实施例提供的技术方案可以适用于多种系统，尤其是5G系统。例如适用的系统可以是全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)通用分组无线业务(general packet radio service，GPRS)系统、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)系统、高级长期演进(long term evolution advanced，LTE-A)系统、通用移动系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)系统、5G新空口(New Radio,NR)系统等。这多种系统中均包括终端设备和网络设备。系统中还可以包括核心网部分，例如演进的分组系统(Evloved Packet System,EPS)、5G系统(5GS)等。
本公开实施例涉及的终端设备，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备等。在不同的系统中，终端设备的名称可能也不相同，例如在5G系统中，终端设备可以称为用户设备(User Equipment，UE)。无线终端设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network,CN)进行通信，无线终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话)和具有移动终端设备的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(Session Initiated Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user  agent)、用户装置(user device)，本公开实施例中并不限定。
本公开实施例涉及的网络设备，可以是基站，该基站可以包括多个为终端提供服务的小区。根据具体应用场合不同，基站又可以称为接入点，或者可以是接入网中在空中接口上通过一个或多个扇区与无线终端设备通信的设备，或者其它名称。网络设备可用于将收到的空中帧与网际协议(Internet Protocol，IP)分组进行相互更换，作为无线终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)通信网络。网络设备还可协调对空中接口的属性管理。例如，本公开实施例涉及的网络设备可以是全球移动通信系统(Global System for Mobile communications，GSM)或码分多址接入(Code Division Multiple Access，CDMA)中的网络设备(Base Transceiver Station，BTS)，也可以是带宽码分多址接入(Wide-band Code Division Multiple Access，WCDMA)中的网络设备(NodeB)，还可以是长期演进(long term evolution，LTE)系统中的演进型网络设备(evolutional Node B，eNB或e-NodeB)、5G网络架构(next generation system)中的5G基站(gNB)，也可以是家庭演进基站(Home evolved Node B，HeNB)、中继节点(relay node)、家庭基站(femto)、微微基站(pico)等，本公开实施例中并不限定。在一些网络结构中，网络设备可以包括集中单元(centralized unit，CU)节点和分布单元(distributed unit，DU)节点，集中单元和分布单元也可以地理上分开布置。
网络设备与终端设备之间可以各自使用一或多根天线进行多输入多输出(Multi Input Multi Output,MIMO)传输，MIMO传输可以是单用户MIMO(Single User MIMO,SU-MIMO)或多用户MIMO(Multiple User MIMO,MU-MIMO)。根据根天线组合的形态和数量，MIMO传输可以是2D-MIMO、3D-MIMO、FD-MIMO或massive-MIMO，也可以是分集传输或预编码传输或波束赋形传输等。
本领域内的技术人员应明白，本公开的实施例可提供为方法、系统、或计算机程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个 其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机可执行指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机可执行指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些处理器可执行指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的处理器可读存储器中，使得存储在该处理器可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些处理器可执行指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (55)

  1. 一种相干联合传输方法，应用于终端，所述方法包括：
    接收网络设备发送的媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
    基于所述目标TCI状态信息进行数据的相干联合传输；
    其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
  2. 根据权利要求1所述的相干联合传输方法，其中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述方法还包括：接收所述网络设备发送的第二DCI信令；
    所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
    所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
    所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
  3. 根据权利要求1所述的相干联合传输方法，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
    确定2个目标TCI状态的准共址QCL类型不同。
  4. 根据权利要求1所述的相干联合传输方法，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
    接收所述网络设备发送的高层信令；所述高层信令用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
  5. 根据权利要求1所述的相干联合传输方法，其中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输，包括以下至少一项：
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中各目标TCI状态的QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
    其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
  6. 根据权利要求1所述的相干联合传输方法，其中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
    接收所述网络设备发送的第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI 状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
  7. 根据权利要求6所述的相干联合传输方法，其中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
  8. 根据权利要求5所述的相干联合传输方法，其中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
  9. 根据权利要求8所述的相干联合传输方法，其中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
  10. 一种相干联合传输方法，应用于网络设备，所述方法包括：
    向终端发送媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
    基于所述目标TCI状态信息与进行数据的相干联合传输；
    其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
  11. 根据权利要求10所述的相干联合传输方法，其中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述方法还包括：向所述终端发送第二DCI信令；
    所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
    所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
    所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
  12. 根据权利要求10所述的相干联合传输方法，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
    确定2个目标TCI状态的准共址QCL类型不同。
  13. 根据权利要求10所述的相干联合传输方法，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
    通过高层信令向所述终端指示基于所述目标TCI状态信息进行数据的相干联合传输。
  14. 根据权利要求10所述的相干联合传输方法，其中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输，包括以下至少一项：
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并利用所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并根据所述N个目标TCI状态中各目标TCI状态的准共址QCL 类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
    其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
  15. 根据权利要求10所述的相干联合传输方法，其中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述方法还包括：
    向所述终端发送第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
  16. 根据权利要求15所述的相干联合传输方法，其中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
  17. 根据权利要求14所述的相干联合传输方法，其中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
  18. 根据权利要求17所述的相干联合传输方法，其中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
  19. 一种终端，包括存储器，收发机，处理器：
    存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
    接收网络设备发送的媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
    基于所述目标TCI状态信息进行数据的相干联合传输；
    其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正 整数。
  20. 根据权利要求19所述的终端，其中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：接收所述网络设备发送的第二DCI信令；
    所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
    所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
    所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
  21. 根据权利要求19所述的终端，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
    确定2个目标TCI状态的准共址QCL类型不同。
  22. 根据权利要求19所述的终端，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
    接收所述网络设备发送的高层信令；所述高层信令用于指示基于所述目 标TCI状态信息进行数据的相干联合传输。
  23. 根据权利要求19所述的终端，其中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输，包括以下至少一项：
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
    其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
  24. 根据权利要求19所述的终端，其中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
    接收所述网络设备发送的第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
  25. 根据权利要求24所述的终端，其中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
  26. 根据权利要求23所述的终端，其中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
  27. 根据权利要求26所述的终端，其中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
  28. 一种网络设备，包括存储器，收发机，处理器：
    存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
    向终端发送媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
    基于所述目标TCI状态信息与进行数据的相干联合传输；
    其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
  29. 根据权利要求28所述的网络设备，其中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：向所述终端发送第二DCI信令；
    所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
    所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
    所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
  30. 根据权利要求28所述的网络设备，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
    确定2个目标TCI状态的准共址QCL类型不同。
  31. 根据权利要求28所述的网络设备，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
    通过高层信令向所述终端指示基于所述目标TCI状态信息进行数据的相干联合传输。
  32. 根据权利要求28所述的网络设备，其中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输，包括以下至少一项：
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并利用所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并根据所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
    其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
  33. 根据权利要求28所述的网络设备，其中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述处理器还用于：
    向所述终端发送第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
  34. 根据权利要求33所述的网络设备，其中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
  35. 根据权利要求32所述的网络设备，其中，所述M个第二TCI状态 的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
  36. 根据权利要求35所述的网络设备，其中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
  37. 一种相干联合传输装置，所述装置包括：
    接收模块，用于接收网络设备发送的媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
    传输模块，用于基于所述目标TCI状态信息进行数据的相干联合传输；
    其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
  38. 根据权利要求37所述的相干联合传输装置，其中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述接收模块还用于：接收所述网络设备发送的第二DCI信令；
    所述第二DCI信令用于通过以下至少一种方式向终端指示进行数据的相干联合传输：
    所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
    所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
  39. 根据权利要求37所述的相干联合传输装置，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述传输模块还用于：
    确定2个目标TCI状态的准共址QCL类型不同。
  40. 根据权利要求37所述的相干联合传输装置，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述接收模块还用于：
    接收所述网络设备发送的高层信令；所述高层信令用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
  41. 根据权利要求37所述的相干联合传输装置，其中，当N大于2时，所述传输模块具体用于执行以下至少一项：
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并基于所述N个目标TCI状态中各目标TCI状态的QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
    其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
  42. 根据权利要求37所述的相干联合传输装置，其中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述接收模块还用于：
    接收所述网络设备发送的第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
  43. 根据权利要求42所述的相干联合传输装置，其中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
  44. 根据权利要求41所述的相干联合传输装置，其中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
  45. 根据权利要求44所述的相干联合传输装置，其中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
  46. 一种相干联合传输装置，所述装置包括：
    发送模块，用于向终端发送媒体接入控制单元MAC-CE信令或第一下行链路控制信息DCI信令，所述MAC-CE信令或第一DCI信令用于指示目标传输配置指示TCI状态信息；
    传输模块，用于基于所述目标TCI状态信息与进行数据的相干联合传输；
    其中，所述目标TCI状态信息包括N个目标TCI状态，所述目标TCI状态为下行TCI状态或者上下行联合TCI状态中的任一种；N为大于1的正整数。
  47. 根据权利要求46所述的相干联合传输装置，其中，当N为2时，所述基于所述TCI状态信息进行数据的相干联合传输之前，所述发送模块还用于：向所述终端发送第二DCI信令；
    所述第二DCI信令用于通过以下至少一种方式向所述终端指示进行数据的相干联合传输：
    所述第二DCI信令包含第一信息域，所述第一信息域用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域中的所述目标TCI 状态信息的重复次数为1，所述目标TCI状态信息的重复次数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含资源分配域，所述资源分配域包括目标参数，所述目标参数的取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令指示的解调参考信号DMRS的码分复用CDM组数大于2，所述DMRS的CDM组数用于指示基于所述目标TCI状态信息进行数据的相干联合传输；
    所述第二DCI信令包含第二信息域，所述第二信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一；
    所述第二DCI信令包含的一个或多个指定信息域的预设取值用于指示基于所述目标TCI状态信息进行数据的相干联合传输。
  48. 根据权利要求46所述的相干联合传输装置，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述传输模块还用于：
    确定2个目标TCI状态的准共址QCL类型不同。
  49. 根据权利要求46所述的相干联合传输装置，其中，当N为2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述发送模块还用于：
    通过高层信令向所述终端指示基于所述目标TCI状态信息进行数据的相干联合传输。
  50. 根据权利要求46所述的相干联合传输装置，其中，当N大于2时，所述传输模块具体用于执行以下至少一项：
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干联合传输，并利用所述N个目标TCI状态中指定位置的M个第二TCI状态进行目标信道以及参考信号的传输；
    基于所述目标TCI状态信息中包括的N个目标TCI状态进行数据的相干 联合传输，并根据所述N个目标TCI状态中各目标TCI状态的准共址QCL类型确定M个第二TCI状态，基于所述第二TCI状态进行目标信道以及参考信号的传输；
    其中，M为小于N的正整数；所述目标信道为除物理下行共享信道PDSCH之外的信道。
  51. 根据权利要求46所述的相干联合传输装置，其中，当N大于2时，所述基于所述目标TCI状态信息进行数据的相干联合传输之前，所述发送模块还用于：
    向所述终端发送第二DCI信令，所述第二DCI信令包括第三信息域，所述第三信息域用于指示进行数据的相干联合传输所使用的第一TCI状态；所述第一TCI状态为所述N个目标TCI状态中的至少之一。
  52. 根据权利要求51所述的相干联合传输装置，其中，所述第三信息域还用于指示进行目标信道以及参考信号的传输的第二TCI状态；所述第二TCI状态为所述N个目标TCI状态中的至少之一，所述目标信道为除PDSCH之外的信道。
  53. 根据权利要求50所述的相干联合传输装置，其中，所述M个第二TCI状态的QCL类型，与所述N个目标TCI状态中剩余的N-M个目标TCI状态的QCL类型不同。
  54. 根据权利要求53所述的相干联合传输装置，其中，所述N-M个目标TCI状态的QCL类型包括QCL类型B或QCL类型C中的至少一项。
  55. 一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行权利要求1至9任一项所述的方法，或者执行权利要求10至18任一项所述的方法。
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