WO2024021862A1 - Procédé et appareil de communication et support d'enregistrement - Google Patents

Procédé et appareil de communication et support d'enregistrement Download PDF

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Publication number
WO2024021862A1
WO2024021862A1 PCT/CN2023/098070 CN2023098070W WO2024021862A1 WO 2024021862 A1 WO2024021862 A1 WO 2024021862A1 CN 2023098070 W CN2023098070 W CN 2023098070W WO 2024021862 A1 WO2024021862 A1 WO 2024021862A1
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WO
WIPO (PCT)
Prior art keywords
antenna port
value
dmrs
division multiplexing
code division
Prior art date
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PCT/CN2023/098070
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English (en)
Chinese (zh)
Inventor
王中振
韩小江
Original Assignee
华为技术有限公司
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Publication date
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Publication of WO2024021862A1 publication Critical patent/WO2024021862A1/fr

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Classifications

    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of communication technology, and in particular, to a communication method, device and storage medium.
  • the existing demodulation reference signal (DMRS) port allocation scheme of new radio access technology (New RAT) (abbreviated as "NR") has high flexibility.
  • DMRS demodulation reference signal
  • dmrs-Type new radio access technology
  • maxLength maximum time domain symbol length allowed by different pre-DMRS
  • different tables are defined.
  • the actual number of ports required may be less than the number of ports enumerated in the existing tables. In this case, many of the enumeration values in the existing tables will become invalid enumeration scenarios. , resulting in high signaling overhead and a waste of transmission resources.
  • the present application provides a communication method, device and storage medium to reduce the signaling overhead of indicating the DMRS antenna port of a terminal in a single-port communication system.
  • a communication method which is applied to a terminal in a single-port communication system.
  • the method includes: receiving first signaling, where the first signaling includes the type of demodulation reference signal DMRS DMRS-Type and The maximum time domain symbol length maxLength allowed by the prefix DMRS; according to the dmrs-Type and the maxLength, determine the first relationship corresponding to the single-port communication system, the first relationship includes the antenna in the downlink control information DCI At least one candidate value of the port field, and a candidate antenna port corresponding to each of the at least one candidate value of the antenna port field in the DCI, the candidate corresponding to each candidate value in the first relationship
  • the number of antenna ports is all 1; receiving the DCI, where the DCI includes an antenna port field, and the antenna port field is used to indicate one of at least one candidate value of the antenna port field in the DCI; according to the An indicated value, determining an antenna port corresponding to the indicated value; and receiving DMRS on the determined antenna port.
  • a relationship between candidate antenna ports corresponding to each candidate value in at least one candidate value of the new antenna port field is defined, and the terminal can receive DMRS on the antenna port determined according to the relationship. .
  • the number of bits required for the antenna port field is reduced, thereby saving signaling overhead for indicating the DMRS antenna port.
  • the first relationship also includes the number of DMRS code division multiplexing groups that do not map data corresponding to each candidate value of at least one candidate value of the antenna port field in the DCI. ; The method further includes: determining, according to the first relationship, the number of DMRS code division multiplexing groups that do not map data corresponding to one of the indicated values; and determining the number of DMRS code division multiplexing groups that do not map data according to the determined value. Using the number of groups, determine the time-frequency domain position of the data on the antenna port; and receive the data at the determined time-frequency domain position.
  • the antenna port field by determining the number of DMRS code division multiplexing groups that do not map data corresponding to one of the at least one candidate values indicated by the antenna port field, it can be determined whether the data is mapped on the antenna port, and the antenna The time-frequency domain position of the data on the port. Receiving data at this time-frequency domain position can improve the accuracy of the received data.
  • a communication method which is applied to network equipment in a single-port communication system.
  • the method includes: Send the first signaling, which includes the type dmrs-Type of the demodulation reference signal DMRS and the maximum time domain symbol length maxLength allowed by the preamble DMRS; determine the A first relationship corresponding to a single-port communication system, the first relationship includes at least one candidate value of the antenna port field in the downlink control information DCI, and each of the at least one candidate value of the antenna port field in the DCI candidate antenna ports corresponding to candidate values, the number of candidate antenna ports corresponding to each candidate value in the first relationship is 1; send the DCI, the DCI includes an antenna port field, the antenna port field for indicating a value among at least one candidate value of the antenna port field in the DCI; determining an antenna port corresponding to the indicated value according to the indicated value; and in the determined antenna port Send DMRS on.
  • a relationship between candidate antenna ports corresponding to each candidate value in at least one candidate value of the new antenna port field is defined, so that the terminal can receive on the antenna port determined according to the relationship DMRS.
  • the number of bits required for the antenna port field is reduced, thereby saving signaling overhead for indicating the DMRS antenna port.
  • the first relationship also includes the number of DMRS code division multiplexing groups that do not map data corresponding to each candidate value of at least one candidate value of the antenna port field in the DCI. ; The method further includes: determining, according to the first relationship, the number of DMRS code division multiplexing groups that do not map data corresponding to one of the indicated values; and determining the number of DMRS code division multiplexing groups that do not map data according to the determined value. Using the number of groups, determine the time-frequency domain position of the data on the antenna port; and transmit the data at the determined time-frequency domain position.
  • a communication device in a third aspect, can implement the method in the above first aspect.
  • the communication device may be a terminal or a chip system of the terminal.
  • the above method can be implemented through software, hardware, or through hardware executing corresponding software.
  • the device includes: a transceiver unit and a processing unit; wherein: the transceiver unit is configured to receive first signaling, where the first signaling includes a type of demodulation reference signal DMRS-dmrs- Type and the maximum time domain symbol length maxLength allowed by the prefix DMRS; the processing unit is used to determine the first relationship corresponding to the single-port communication system according to the DMRS-Type and the maxLength.
  • the transceiver unit is configured to receive first signaling, where the first signaling includes a type of demodulation reference signal DMRS-dmrs- Type and the maximum time domain symbol length maxLength allowed by the prefix DMRS
  • the processing unit is used to determine the first relationship corresponding to the single-port communication system according to the DMRS-Type and the maxLength.
  • the first relationship includes at least one candidate value of the antenna port field in the downlink control information DCI and a candidate antenna port corresponding to each of the at least one candidate value of the antenna port field in the DCI, in the first relationship
  • the number of candidate antenna ports corresponding to each candidate value is 1;
  • the transceiver unit is also used to receive the DCI, the DCI includes an antenna port field, and the antenna port field is used to indicate the one of at least one candidate value of the antenna port field;
  • the processing unit is further configured to determine, according to the indicated value, the antenna port corresponding to the indicated value; and the transceiver unit is further Used to receive DMRS on the determined antenna port.
  • the first relationship also includes the number of DMRS code division multiplexing groups that do not map data corresponding to each candidate value of at least one candidate value of the antenna port field in the DCI; the processing The unit is further configured to determine, according to the first relationship, the number of DMRS code division multiplexing groups of unmapped data corresponding to a value of the indication; the processing unit is further configured to determine the number of DMRS code division multiplexing groups according to the determined unmapped data.
  • the number of DMRS code division multiplexing groups of data determines the time-frequency domain position of the data on the antenna port; and the transceiver unit is also configured to receive the data at the determined time-frequency domain position.
  • a communication device in a fourth aspect, can implement the method in the above second aspect.
  • the communication device may be a network device or a chip system in the network device.
  • the above method can be implemented through software, hardware, or through hardware executing corresponding software.
  • the device includes: a transceiver unit and a processing unit; wherein: the transceiver unit is configured to send first signaling, where the first signaling includes a type of demodulation reference signal DMRS-dmrs- Type and the maximum time domain symbol length maxLength allowed by the prefix DMRS; the processing unit is used to determine the first relationship corresponding to the single-port communication system according to the DMRS-Type and the maxLength.
  • the transceiver unit is configured to send first signaling, where the first signaling includes a type of demodulation reference signal DMRS-dmrs- Type and the maximum time domain symbol length maxLength allowed by the prefix DMRS
  • the processing unit is used to determine the first relationship corresponding to the single-port communication system according to the DMRS-Type and the maxLength.
  • the first relationship includes at least one candidate value of the antenna port field in the downlink control information DCI and a candidate antenna port corresponding to each of the at least one candidate value of the antenna port field in the DCI, in the first relationship
  • the number of candidate antenna ports corresponding to each candidate value is 1;
  • the transceiver unit is also used to send the DCI, the DCI includes an antenna port field, and the antenna port field is used to indicate that in the DCI one of at least one candidate value of the antenna port field;
  • the processing unit is further configured to determine, according to the indicated value, the antenna port corresponding to the indicated value; and the transceiver unit is further Used to send DMRS on the determined antenna port.
  • the first relationship also includes the number of DMRS code division multiplexing groups that do not map data corresponding to each candidate value of at least one candidate value of the antenna port field in the DCI; the processing The unit is further configured to determine, according to the first relationship, the number of DMRS code division multiplexing groups of unmapped data corresponding to a value of the indication; the processing unit is further configured to determine the number of DMRS code division multiplexing groups according to the determined unmapped data.
  • the number of DMRS code division multiplexing groups of data determines the time-frequency domain position of the data on the antenna port; and the transceiver unit is also configured to send the data at the determined time-frequency domain position.
  • the above communication device includes a processor coupled with a memory; the processor is configured to support the device to perform corresponding functions in the above communication method.
  • Memory is coupled to the processor and stores computer programs (or computer-executable instructions) and/or data necessary for the apparatus.
  • the communication device may also include a communication interface for supporting communication between the device and other network elements, such as the sending or receiving of data and/or signals.
  • the communication interface may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces.
  • the memory can be located inside the communication device and integrated with the processor; it can also be located outside the communication device.
  • the above communication device includes a processor and a transceiver device, the processor is coupled to the transceiver device, and the processor is used to execute a computer program or instructions to control the transceiver device to perform information processing. receiving and sending; when the processor executes the computer program or instructions, the processor is also used to implement the above method through logic circuits or execution code instructions.
  • the transceiver device may be a transceiver, a transceiver circuit, an interface circuit or an input/output interface, used for receiving signals from other communication devices other than the communication device and transmitting them to the processor or from the processor. The signal from the transmitter is sent to other communication devices other than the communication device.
  • the transceiver device is a transceiver circuit or an input-output interface.
  • the sending unit may be an output unit, such as an output circuit or a communication interface; the receiving unit may be an input unit, such as an input circuit or a communication interface.
  • the sending unit may be a transmitter or a transmitter; the receiving unit may be a receiver or a receiver.
  • DMRS on the antenna port is used to demodulate data on the antenna port.
  • DMRS is used to demodulate data on the antenna port, improving the accuracy of data demodulation.
  • the dmrs-Type is 1, and the maxLength is 1;
  • the value of the antenna port field is 0, the number of DMRS code division multiplexing groups that do not map data is 1, and the antenna port is 0;
  • the value of the antenna port field is 1, the number of DMRS code division multiplexing groups that do not map data is 1, and the Antenna port is 1;
  • the value of the antenna port field is 2, the number of DMRS code division multiplexing groups without mapping data is 2, and the antenna port is 0;
  • the value of the antenna port field is 3, the number of DMRS code division multiplexing groups without mapping data is 2, and the antenna port is 1;
  • the value of the antenna port field is 4, the number of DMRS code division multiplexing groups without data mapping is 2, and the antenna port is 2;
  • the value of the antenna port field is 5, the number of DMRS code division multiplexing groups without data mapping is 2, and the antenna port is 3.
  • the candidate antenna port corresponding to each candidate value in at least one candidate value of the antenna port field is defined.
  • the first relationship further includes a prefix corresponding to each candidate value of at least one candidate value of the antenna port field in the DCI.
  • the number of symbols, the dmrs-Type is 1, and the maxLength is 2;
  • the value of the antenna port field is 0, the number of DMRS code division multiplexing groups that do not map data is 1, the antenna port is 0, and the number of preamble symbols is 1;
  • the value of the antenna port field is 1, the number of DMRS code division multiplexing groups that do not map data is 1, the antenna port is 1, and the number of preamble symbols is 1;
  • the value of the antenna port field is 2, the number of DMRS code division multiplexing groups that do not map data is 2, the antenna port is 0, and the number of preamble symbols is 1;
  • the value of the antenna port field is 3, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 1, and the number of preamble symbols is 1;
  • the value of the antenna port field is 4, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 2, and the number of preamble symbols is 1;
  • the value of the antenna port field is 5, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 3, and the number of preamble symbols is 1;
  • the value of the antenna port field is 6, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 0, and the number of preamble symbols is 2;
  • the value of the antenna port field is 7, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 1, and the number of preamble symbols is 2;
  • the value of the antenna port field is 8, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 2, and the number of preamble symbols is 2;
  • the value of the antenna port field is 9, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 3, and the number of preamble symbols is 2;
  • the value of the antenna port field is 10, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 4, and the number of preamble symbols is 2;
  • the value of the antenna port field is 11, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 5, and the number of preamble symbols is 2;
  • the value of the antenna port field is 12, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 6, and the number of preamble symbols is 2;
  • the value of the antenna port field is 13, the number of DMRS code division multiplexing groups that do not map data is 2, and the The antenna port is 7 and the number of preamble symbols is 2.
  • the candidate antenna port corresponding to each candidate value in at least one candidate value of the antenna port field is defined.
  • the dmrs-Type is 2, and the maxLength is 1;
  • the value of the antenna port field is 0, the number of DMRS code division multiplexing groups that do not map data is 1, and the antenna port is 0;
  • the value of the antenna port field is 1, the number of DMRS code division multiplexing groups that do not map data is 1, and the antenna port is 1;
  • the value of the antenna port field is 2, the number of DMRS code division multiplexing groups without mapping data is 2, and the antenna port is 0;
  • the value of the antenna port field is 3, the number of DMRS code division multiplexing groups without mapping data is 2, and the antenna port is 1;
  • the value of the antenna port field is 4, the number of DMRS code division multiplexing groups without data mapping is 2, and the antenna port is 2;
  • the value of the antenna port field is 5, the number of DMRS code division multiplexing groups without mapping data is 2, and the antenna port is 3;
  • the value of the antenna port field is 6, the number of DMRS code division multiplexing groups without mapping data is 3, and the antenna port is 0;
  • the value of the antenna port field is 7, the number of DMRS code division multiplexing groups without mapping data is 3, and the antenna port is 1;
  • the value of the antenna port field is 8, the number of DMRS code division multiplexing groups without mapping data is 3, and the antenna port is 2;
  • the value of the antenna port field is 9, the number of DMRS code division multiplexing groups without mapping data is 3, and the antenna port is 3;
  • the value of the antenna port field is 10, the number of DMRS code division multiplexing groups without data mapping is 3, and the antenna port is 4;
  • the value of the antenna port field is 11, the number of DMRS code division multiplexing groups without data mapping is 3, and the antenna port is 5.
  • the candidate antenna port corresponding to each candidate value of at least one candidate value of the antenna port field is defined.
  • the first relationship further includes a prefix corresponding to each candidate value of at least one candidate value of the antenna port field in the DCI.
  • the number of symbols, the dmrs-Type is 2, and the maxLength is 2;
  • the value of the antenna port field is 0, the number of DMRS code division multiplexing groups that do not map data is 1, the antenna port is 0, and the number of preamble symbols is 1;
  • the value of the antenna port field is 1, the number of DMRS code division multiplexing groups that do not map data is 1, the antenna port is 1, and the number of preamble symbols is 1;
  • the value of the antenna port field is 2, the number of DMRS code division multiplexing groups that do not map data is 2, the antenna port is 0, and the number of preamble symbols is 1;
  • the value of the antenna port field is 3, the number of DMRS code division multiplexing groups that do not map data is 2, and the The antenna port is 1, and the number of preamble symbols is 1;
  • the value of the antenna port field is 4, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 2, and the number of preamble symbols is 1;
  • the value of the antenna port field is 5, the number of DMRS code division multiplexing groups without mapping data is 2, the antenna port is 3, and the number of preamble symbols is 1;
  • the value of the antenna port field is 6, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 0, and the number of preamble symbols is 1;
  • the value of the antenna port field is 7, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 1, and the number of preamble symbols is 1;
  • the value of the antenna port field is 8, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 2, and the number of preamble symbols is 1;
  • the value of the antenna port field is 9, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 3, and the number of preamble symbols is 1;
  • the value of the antenna port field is 10, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 4, and the number of preamble symbols is 1;
  • the value of the antenna port field is 11, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 5, and the number of preamble symbols is 1;
  • the value of the antenna port field is 12, the number of DMRS code division multiplexing groups without data mapping is 3, the antenna port is 0, and the number of preamble symbols is 2;
  • the value of the antenna port field is 13, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 1, and the number of preamble symbols is 2;
  • the value of the antenna port field is 14, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 2, and the number of preamble symbols is 2;
  • the value of the antenna port field is 15, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 3, and the number of preamble symbols is 2;
  • the value of the antenna port field is 16, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 4, and the number of preamble symbols is 2;
  • the value of the antenna port field is 17, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 5, and the number of preamble symbols is 2;
  • the value of the antenna port field is 18, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 6, and the number of preamble symbols is 2;
  • the value of the antenna port field is 19, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 7, and the number of preamble symbols is 2;
  • the value of the antenna port field is 20, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 8, and the number of preamble symbols is 2;
  • the value of the antenna port field is 21, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 9, and the number of preamble symbols is 2;
  • the value of the antenna port field is 22, the number of DMRS code division multiplexing groups without mapping data is 3, the antenna port is 10, and the number of preamble symbols is 2;
  • the value of the antenna port field is 23, the number of DMRS code division multiplexing groups without data mapping is 3, the antenna port is 11, and the number of preamble symbols is 2;
  • the value of the antenna port field is 24, the number of DMRS code division multiplexing groups without mapping data is 1, the antenna port is 0, and the number of preamble symbols is 2;
  • the value of the antenna port field is 25, the number of DMRS code division multiplexing groups without mapping data is 1, the antenna port is 1, and the number of preamble symbols is 2;
  • the value of the antenna port field is 26, the number of DMRS code division multiplexing groups without mapping data is 1, the antenna port is 6, and the number of preamble symbols is 2;
  • the value of the antenna port field is 27, the number of DMRS code division multiplexing groups without data mapping is 1, the antenna port is 7, and the number of preamble symbols is 2.
  • the candidate antenna port corresponding to each candidate value of at least one candidate value of the antenna port field is defined.
  • a fifth aspect provides a communication system, which includes the communication device described in the third aspect and the communication device described in the fourth aspect.
  • a computer-readable storage medium on which a computer program or instructions are stored.
  • the program or instructions are executed by a processor, as in any one of the first aspect, the second aspect, or any one of the Implement the method described to be executed.
  • a seventh aspect provides a computer program product that, when executed on a computing device, causes the method described in any one of the first aspect, the second aspect or any implementation to be executed.
  • An eighth aspect provides a circuit, the circuit is coupled with a memory, and the circuit is used to execute any one of the first aspect, the second aspect or any one of the methods described above.
  • the circuit may include chip circuitry.
  • Figure 1 is a schematic diagram of a communication system involved in this application.
  • Figure 2 is a schematic diagram of the meaning of an existing antenna port field in an example of an embodiment of the present application
  • Figure 3 is a schematic diagram of the meaning of another existing antenna port field in an example of an embodiment of the present application.
  • Figure 4 is a schematic flow chart of a communication method provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram of network equipment allocating DMRS ports according to the embodiment of the present application.
  • Figure 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a simplified terminal provided by an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a simplified network device provided by an embodiment of the present application.
  • Figure 9 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • the technical solution provided by this application can be applied to various communication systems, such as: long term evolution (LTE) system, fifth generation ( 5th generation, 5G) communication system (or NR system) and other systems in the future. Communication systems such as sixth generation ( 6th generation, 6G) communication systems, etc.
  • LTE long term evolution
  • 5th generation, 5G fifth generation
  • 6th generation, 6G sixth generation
  • the technical solutions provided by this application can also be applied to Internet of Things (IoT) systems, narrowband Internet of Things (NB-IoT) systems, etc.
  • IoT Internet of Things
  • NB-IoT narrowband Internet of Things
  • Figure 1 shows a schematic diagram of a communication system involved in this application.
  • the communication system includes at least one network device and at least one terminal.
  • a network device and multiple terminals (the figure illustrates user equipment (UE) 1 to UE5) form a communication system.
  • UE1 to UE5 can communicate with network equipment.
  • the link environment includes uplink, downlink and side-link transmission.
  • the information transmitted in the link includes the actual transmitted data information. and control information used to direct or dispatch actual data.
  • UE3, UE4 and UE5 can also be combined It forms a communication system, and its link transmission environment is consistent with the above. The specific information interaction depends on the configuration of the network.
  • the above network device may be a device capable of communicating with the terminal.
  • the network device can be any device with wireless transceiver function. Including but not limited to: base stations such as Node B (NodeB), evolved base stations such as evolved Node B (eNodeB), base stations in the fifth generation (5G) communication system, base stations or network equipment in future communication systems , access nodes, wireless relay nodes, wireless backhaul nodes, etc. in WiFi systems.
  • the network device can also be a wireless controller in a cloud radio access network (CRAN) scenario.
  • Network equipment can also be small stations, transmission nodes (transmission reference point, TRP), etc.
  • TRP transmission reference point
  • the network device can also be an access node, wireless relay node, wireless backhaul node, etc. in a wireless LAN (wireless fidelity, WiFi) system.
  • the network device can also be a wireless controller in a cloud radio access network (CRAN) scenario.
  • CRAN cloud radio access network
  • the base stations may include centralized units (CU) and distributed units (DU).
  • CU can also be divided into CU-control plane (CP) and CU-user plane (User plane, UP).
  • CP CU-control plane
  • UP CU-user plane
  • the base station may also be an open radio access network (openradioaccess network, ORAN) architecture, etc. This application does not limit the specific deployment method of the base station.
  • the above-mentioned terminal is a device with wireless transceiver function, which can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on water, such as ships, etc.; it can also be deployed in the air, such as aircraft, Balloons and satellites alike.
  • the terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an industrial control ( Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, and transportation safety wireless terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the embodiments of this application do not limit application scenarios.
  • the terminal equipment may sometimes also be called user equipment, access terminal equipment, UE unit, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, terminal, wireless communication equipment, UE agent or UE device
  • terminals can also communicate through device-to-device (D2D), vehicle-to-everything (V2X) or machine-to-machine (V2X). machine to machine, M2M) and other technologies to communicate.
  • D2D device-to-device
  • V2X vehicle-to-everything
  • V2X machine-to-machine
  • M2M machine to machine
  • system and “network” in the embodiments of this application may be used interchangeably.
  • MU-MIMO multi-user-multi-input-multi-output
  • the network side can allocate different DMRS to multiple paired users.
  • the antenna port field in the downlink control information (DCI) is used to indicate to the terminal: the DMRS port number used for this physical downlink shared channel (PDSCH) scheduling, which is used for the terminal downlink Demodulation; and the DMRS positions that cannot be used to transmit PDSCH resource elements (REs) in this PDSCH scheduling are used for users to perform PDSCH rate matching (ratematching).
  • PDSCH physical downlink shared channel
  • REs resource elements
  • the antenna port field length is generally 4, 5 or 6 bits, and its field meaning is defined in Table 7.3.1.2.2-1/2/3/4 of specification 38212.
  • These four tables define the single/dual codeword (codeword), different antenna port types (dmrs-Type), the maximum time domain symbol length (maxLength) allowed by different pre-DMRS, etc., DMRS port (DMRS port(s) )), and the number of DMRS code division multiplexing groups that do not map data (Number of DMRS CDM group(s)without data).
  • Table 1 in specification 38212 is for Table 7.2.1.2.2-1.
  • the NR system can process up to 2 codewords at the same time: codeword 0 and codeword 1.
  • Single-code word streams can be mapped to up to 4 layers (i.e. 4 DMRS ports), and dual-code word streams can be mapped to up to 8 layers. In this scenario, only a single code word stream is required. For example, codeword 0 is enabled and codeword 1 is disabled.
  • the antenna port field of DCI1_1 includes 4 bits, corresponding to the values of 16 antenna port fields. Among them, the value of the antenna port field is 12-15 as reserved bits.
  • a single time domain symbol supports 4 DMRS ports: 1000 (that is, the DMRS port with the DMRS port candidate value in Table 1 as "0"), 1001 (that is, the DMRS port with the candidate value as "1” in Table 1) DMRS port), 1002 (that is, the DMRS port whose DMRS port candidate value is “2" in Table 1), 1003 (that is, the DMRS port whose DMRS port candidate value is "3" in Table 1).
  • the value of the antenna port field is "0", used to indicate antenna port 1000; the value of the antenna port field is “1”, used to indicate antenna port 1001; the value of the antenna port field is “2”, used to indicate Antenna ports 1000, 1001; the value of the antenna port field is "3”, used to indicate antenna port 1000; the value of the antenna port field is "4", used to indicate antenna port 1001; the value of the antenna port field is " 5", used to indicate antenna port 1002; the value of the antenna port field is "6”, used to indicate antenna port 1003; the value of the antenna port field is "7”, used to indicate antenna ports 1000, 1001; antenna port The value of the field is “8”, used to indicate antenna ports 1002 and 1003; the value of the antenna port field is “9”, used to indicate antenna ports 1000-1002; the value of the antenna port field is "10”, used It is used to indicate antenna ports 1000-1003; the value of the antenna port field is "11”, which is used to indicate antenna ports 1000 and 1002.
  • CDM groups CDM group 0 and CDM group 1, among which antenna ports 1000 and 1001 perform code division multiplexing and are assigned to CDM group 0; antenna ports 1002 and 1003 perform code division multiplexing and are assigned to CDM group 1.
  • FIG. 2 it is a schematic diagram of the meaning of an existing antenna port field in an example of an embodiment of the present application.
  • the number of DMRS code division multiplexing groups is 1, which corresponds to CMD group 0.
  • Antenna port 1000 (the value of the antenna port field is "0")
  • antenna port 1001 (the value of the antenna port field is "1")
  • antenna ports 1000 and 1001 (the value of the antenna port field is "1") in CDM group 0
  • the DMRS sent on (value "2") is mapped to some REs of a physical resource block (PRB) (6 of which are illustrated in the figure). The remaining REs on this PRB can be used for mapping data.
  • PRB physical resource block
  • the number of DMRS code division multiplexing groups is 2, which corresponds to CMD group 0 and CDM group 1.
  • the DMRS sent on the antenna port in CDM group 0 is mapped to some REs of a PRB (the figure illustrates 6 REs); the DMRS sent on the antenna port in CDM group 1 is mapped to the remaining REs of the PRB. RE (the remaining 6 REs are illustrated in the figure). REs on this PRB cannot be used to map data.
  • maxLength 1 means that the maximum time domain symbol length allowed by different preamble DMRS is 1, that is, DMRS is allowed to be mapped to up to 1 time domain symbol.
  • 3GPP protocol 38.212 defines the table shown in Table 2 below:
  • Table 2 in specification 38212 is for table 7.2.1.2.2-2.
  • the antenna port field is 5 bits and can have 32 values.
  • the antenna ports are less than 4 ports, only a single codeword stream is required.
  • codeword 0 is enabled and codeword 1 is not enabled.
  • dual codeword streams are required.
  • both codeword 0 and codeword 1 are enabled.
  • maxLength 2 means that the maximum time domain symbol length allowed by different preamble DMRS is 2, that is, DMRS is allowed to be mapped to up to 2 time domain symbols.
  • the number of front-load symbols is 1, which allows DMRS to be mapped to 1 time domain On symbols; when the value of the antenna port field is "12" to "30", the number of preamble symbols is 2, which allows DMRS to be mapped to 2 time domain symbols.
  • the number of preamble symbols is 2, which allows DMRS to be mapped to 2 time domain symbols.
  • Table 3 in specification 38212 is for table 7.2.1.2.2-3.
  • Table 4 is for Table 7.2.1.2.2-4 in specification 38212.
  • the antenna port field is 6 bits and can have 64 values.
  • the number of preamble symbols is 1, which allows DMRS to be mapped to 1 time domain symbol; the value of the antenna port field When the value is "24” to "35”, the number of preamble symbols is 2, which allows DMRS to be mapped to 2 time domain symbols.
  • the number of preamble symbols is 2, which allows DMRS to be mapped to 2 time domain symbols.
  • the existing DMRS port allocation scheme of NR mentioned above has high flexibility, but has the following problems:
  • MIMO is a key technology for improving the performance of LTE/NR, so the protocol is designed based on the default that the terminal will support two receivers (2receiver, 2R)/four receivers (4receiver, 4R)/eight receivers (8receiver, 8R).
  • single-port communication systems such as non-terrestrial network (NTN) systems, are limited by channel conditions. Even 2R is difficult to meet the condition of rank 2 (Rank2). Therefore, it can be assumed that terminals are single-receiver. of.
  • Table 1 for a single-port communication system (that is, all terminals are single-port communication systems, such as NTN systems), only the rows marked in bold in Table 5 below (i.e., the 1st, 2nd, and 4th rows under the header , 5, 6, and 7 lines) will appear in the system, while other lines are meaningless for single-port communication systems.
  • Embodiments of the present application provide a communication solution.
  • a relationship between candidate antenna ports corresponding to each candidate value in at least one candidate value of the new antenna port field is defined.
  • the terminal can determine the relationship based on the relationship.
  • DMRS is received on the antenna port.
  • the number of bits required for the antenna port field is reduced, thereby saving signaling overhead for indicating the DMRS antenna port.
  • FIG. 4 it is a schematic flow chart of a communication method provided by an embodiment of the present application.
  • the method may include the following steps:
  • the network device sends the first signaling.
  • the terminal receives the first signaling.
  • At least one candidate value of the antenna port field in the DCI i.e. in the table The value of the antenna port field
  • the candidate antenna port corresponding to each of the at least one candidate value of the antenna port field in the DCI are different.
  • This embodiment relates to the indication of the DMRS antenna port in the single-port communication system.
  • the network device determines the DMRS-Type and maxLength according to the situation of the terminal accessed in the single-port communication system. Then, the network device first sends the first signaling to the terminal.
  • the first signaling includes dmrs-Type and maxLength.
  • the network device may include dmrs-Type and maxLength in high-layer signaling, such as a Radio Resource Control Reconfiguration (RRCReconfiguration) message.
  • RRCReconfiguration Radio Resource Control Reconfiguration
  • the terminal determines the first relationship corresponding to the single-port communication system based on dmrs-Type and maxLength.
  • different antenna port indication relationships are used for non-single-port communication systems and single-port communication systems.
  • a new set of DMRS port allocation tables is reintroduced, that is, the first relationship.
  • the first relationship includes at least one candidate value of the antenna port field in the DCI (that is, the value of the antenna port field in the table), and corresponding to each candidate value of the at least one candidate value of the antenna port field in the DCI.
  • the single-port communication system processes a single code word stream.
  • codeword 0 is enabled and codeword 1 is not enabled.
  • the DCI antenna port field includes 3 bits, corresponding to the values of 8 antenna port fields (or candidate values of the antenna port field). Among them, the value of the antenna port field is 6-7 as reserved bits.
  • the antenna port field in Table 6 saves 1 bit.
  • dmrs-Type 1, 1 time domain symbol supports 4 DMRS ports: 1000 (that is, the DMRS port with the DMRS port candidate value in Table 6 is "0"), 1001 (that is, the DMRS port candidate value in Table 6 is "1" DMRS port), 1002 (that is, the DMRS port whose DMRS port candidate value is “2” in Table 6), 1003 (that is, the DMRS port whose DMRS port candidate value is "3" in Table 6).
  • the value of the antenna port field is "0", used to indicate antenna port 1000; the value of the antenna port field is “1”, used to indicate antenna port 1001; the value of the antenna port field is “2”, used to indicate Antenna port 1000; the value of the antenna port field is "3", used to indicate antenna port 1001; the value of the antenna port field is "4", used to indicate antenna port 1002; the value of the antenna port field is "5" , used to indicate antenna port 1003.
  • the above four DMRS ports can be divided into two CDM groups: CDM group 0 and CDM group 1.
  • antenna ports 1000 and 1001 perform code division multiplexing and are divided into CDM group 0; antenna ports 1002 and 1003 perform code division multiplexing. Use it and divide it into CDM group 1.
  • maxLength 1 means that the maximum time domain symbol length allowed by different preamble DMRS is 1, that is, DMRS is allowed to be mapped to up to 1 time domain symbol.
  • the antenna port field is 4 bits and can have 16 values. Compared with Table 2, the antenna port field in Table 7 saves 1 bit.
  • maxLength 2 means that the maximum time domain symbol length allowed by different preamble DMRS is 2, that is, DMRS is allowed to be mapped to up to 2 time domain symbols.
  • the number of preamble symbols is 1, which allows DMRS to be mapped to 1 time domain symbol; the value of the antenna port field is "6" to When “13" is used, the number of preamble symbols is 2, which allows DMRS to be mapped to 2 time domain symbols.
  • the antenna port field is 4 bits and can have 16 values. Compared with Table 3, 1 bit is saved.
  • the antenna port field is 5 bits and can have 32 values. Compared with Table 4, 1 bit is saved.
  • the number of preamble symbols is 1, which allows DMRS to be mapped to 1 time domain symbol; the value of the antenna port field is "12" to When "27”, the number of preamble symbols is 2, which allows DMRS to be mapped to 2 time domain symbols.
  • the terminal After the terminal receives the first signaling sent by the network device, assuming that the terminal accesses a single-port communication system, the terminal determines the first relationship corresponding to the single-port communication system based on DMRS-Type and maxLength, that is, as shown in Table 6-Table above. Any first relationship among 9.
  • the corresponding HARQ process number (HARQ process number) field will be expanded from If 4 bits are extended to 5 bits, then the 1 bit saved in the DCI for indicating the DMRS antenna port can be used for the expansion of the HARQ channel number without increasing the length of the DCI.
  • the network device sends DCI.
  • the terminal receives the DCI.
  • the network device allocates the DMRS antenna port number for demodulating the PDSCH to the terminal.
  • the network device can also calculate the DMRS puncture positions corresponding to the scheduled positions of the terminal in this time slot that cannot be used to transmit PDSCH, that is, the number of DMRS code division multiplexing groups that do not map data.
  • FIG. 5 it is a schematic diagram of allocating DMRS ports to a network device in an example of an embodiment of the present application.
  • the network device allocates DMRS port 0 to UE_A, allocates DMRS port 1 to UE_B, and allocates DMRS port 2 to UE_C.
  • Three DMRS ports can be allocated only when the number of DMRS code division multiplexing groups for mapping data is 2. Therefore, the number of DMRS code division multiplexing groups for which data is not mapped is set to 2.
  • DMRS port 0 and DMRS port 1 are divided into CDM group 0
  • DMRS port 2 and DMRS port 3 are divided into CDM group 1
  • UE_A and UE_B are code division multiplexed
  • UE_C is frequency division multiplexed with UE_A and UE_B.
  • the number of DMRS code division multiplexing groups that do not map data is 2, and data cannot be mapped at the time domain positions where UE_A, UE_B, and UE_C are mapped.
  • the network device determines the first relationship in one of the tables 6 to 9 as mentioned above based on DMRS-Type and maxLength, and allocates the terminal to the terminal according to the determination determined by the network device.
  • the DMRS port number and the number of DMRS code division multiplexing groups that do not map data determine the value of the antenna port field.
  • the antenna port field is used to indicate one of at least one candidate value of the antenna port field in the DCI.
  • the network device sends DCI, which is carried on the physical downlink control channel (PDCCH).
  • DCI includes the antenna port fields described above.
  • the network device sends DCI, and the value of the antenna port field in the DCI is 2 (expressed in binary, it is: 010).
  • S404 The terminal determines the antenna port corresponding to the indicated value according to the indicated value.
  • the terminal After the terminal detects the DCI carried in the PDCCH through blind detection, it parses and obtains the value of the antenna port field.
  • the terminal determines the first relationship with reference to one of the tables in Table 6 to Table 9 as mentioned above according to the values of dmrs-Type and maxLength carried in the first signaling, and determines the first relationship according to the antenna port field indication carried in the DCI.
  • a value of determines the antenna port corresponding to a value indicated, that is, determines the row corresponding to the table.
  • the network device sends DMRS on the determined antenna port.
  • the terminal receives the DMRS on the determined antenna port.
  • the network device After the network device and the terminal determine the antenna port of the DMRS, the network device sends the DMRS on the determined antenna port, and the terminal receives the DMRS on the determined antenna port. Among them, the DMRS on the antenna port is used to demodulate the data on the antenna port.
  • this embodiment may also include the following steps (this step is optional and is represented by a dotted line in the figure):
  • S406 The terminal determines the number of DMRS code division multiplexing groups that do not map data corresponding to an indicated value according to the first relationship.
  • the terminal determines according to the values of dmrs-Type and maxLength carried in the first signaling, referring to Table 6-Table as mentioned above. 9, and according to a value indicated by the antenna port field carried in the DCI, in addition to determining the antenna port corresponding to the indicated value, it is also possible to determine the different antenna ports corresponding to the indicated value.
  • the number of DMRS code division multiplexing groups for mapping data referring to Table 6-Table as mentioned above. 9, and according to a value indicated by the antenna port field carried in the DCI, in addition to determining the antenna port corresponding to the indicated value, it is also possible to determine the different antenna ports corresponding to the indicated value.
  • the terminal determines the time-frequency domain position of the data on the antenna port according to the determined number of DMRS code division multiplexing groups that do not map data.
  • the terminal can determine whether data is mapped on the antenna port and the time-frequency domain location of the data on the antenna port.
  • the number of DMRS code division multiplexing groups that do not map data is 1, which can be determined based on the number of DMRS code division multiplexing groups that do not map data.
  • DMRS mapping pattern and determine the time domain location where the DMRS is located with data mapped, and determine the time and frequency domain location of the data.
  • the network device sends data at the determined time-frequency domain position.
  • the terminal receives data at the determined time-frequency domain position.
  • the data can be transmitted at the determined time-frequency domain location.
  • a relationship between candidate antenna ports corresponding to each candidate value in at least one candidate value of the new antenna port field is defined, and the terminal can DMRS is received on the determined antenna port.
  • the number of bits required for the antenna port field is reduced, thereby saving signaling overhead for indicating the DMRS antenna port.
  • the terminal and the network device include corresponding hardware structures and/or software modules for executing each function.
  • the units and method steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software driving the hardware depends on the specific application scenarios and design constraints of the technical solution.
  • FIGS 6-9 are schematic structural diagrams of possible communication devices provided by embodiments of the present application. These communication devices can be used to implement the functions of the terminal or network device in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments.
  • the communication device 600 includes a transceiver unit 601 and a processing unit 602 .
  • the transceiver unit 601 is used to perform the functions performed by the terminal in steps S401, S403, S405 and S408 of the embodiment shown in Figure 4 ;
  • the processing unit 602 is used to perform steps S402, S404, S406 and S407 of the embodiment shown in Figure 4.
  • the transceiver unit 601 is used to perform the functions performed by the network device in steps S401, S403, S405 and S408 of the embodiment shown in Figure 4.
  • a relationship between candidate antenna ports corresponding to each candidate value in at least one candidate value of the new antenna port field is defined, and the terminal can be configured according to the relationship DMRS is received on the determined antenna port.
  • the number of bits required for the antenna port field is reduced, thereby saving signaling overhead for indicating the DMRS antenna port.
  • Figure 7 shows a simplified structural diagram of a terminal.
  • a mobile phone is used as an example of the terminal.
  • the terminal includes a processor, memory, radio frequency circuit, antenna and input and output devices.
  • the processor is mainly used to process communication protocols and communication data, control the terminal, execute software programs, process data of software programs, etc.
  • Memory is mainly used to store software programs and data.
  • Radio frequency circuits are mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. For example, some types of terminals may not have input and output devices.
  • the processor When sending data, the processor performs baseband processing on the data to be sent and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal out in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor.
  • the processor converts the baseband signal into data and processes the data.
  • Only one memory and processor are shown in Figure 7. In an actual end product, there may be one or more processors and one or more memories. Memory can also be called storage media or storage devices.
  • the memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the antenna and the radio frequency circuit with the transceiver function can be regarded as the receiving unit and the transmitting unit of the terminal (which can also be collectively referred to as the transceiver unit), and the processor with the processing function can be regarded as the processing unit of the terminal.
  • the terminal includes a transceiver unit 701 and a processing unit 702.
  • the transceiver unit 701 may also be called a receiver/transmitter (transmitter), a receiver/transmitter, a receive/transmit circuit, etc.
  • the processing unit 702 may also be called a processor, a processing board, a processing module, a processing device, etc.
  • the transceiver unit 701 is used to implement the functions of the transceiver unit 601 in the embodiment shown in Figure 6; the processing unit 702 is used to implement the functions of the processing unit 602 in the embodiment shown in Figure 6.
  • the transceiver unit 701 is used to perform the functions performed by the terminal in steps S401, S403, S405 and S408 of the embodiment shown in Figure 4; the processing unit 702 is used to perform the steps of the embodiment shown in Figure 4 S402, S404, S406 and S407.
  • FIG 8 shows a simplified structural diagram of a network device.
  • the network equipment includes a radio frequency signal transceiver and conversion part and a part 802.
  • the radio frequency signal transceiver and conversion part also includes a transceiver unit 801 part.
  • the radio frequency signal transceiver and conversion part is mainly used for the transmission and reception of radio frequency signals and the conversion of radio frequency signals and baseband signals; the 802 part is mainly used for baseband processing and control of network equipment.
  • the transceiver unit 801 may also be called a receiver/transmitter (transmitter), a receiver/transmitter, a receive/transmit circuit, etc.
  • Part 802 is usually the control center of the network device, which can generally be called a processing unit, and is used to control the network device to perform the steps performed by the network device in Figure 4 above.
  • the transceiver unit 801 can be used to implement the functions of the transceiver unit 601 in the embodiment shown in Figure 6, and part 802 is used to implement the functions of the processing unit 602 in the embodiment shown in Figure 6.
  • the 802 part may include one or more single boards, and each single board may include one or more processors and one or more memories.
  • the processor is used to read and execute programs in the memory to implement baseband processing functions and perform network device processing. control. If there are multiple boards, each board can be interconnected to increase processing capabilities. As an optional implementation, multiple single boards may share one or more processors, or multiple single boards may share one or more memories, or multiple single boards may share one or more processors at the same time. device.
  • the transceiver unit 801 is configured to perform the functions performed by the network device in steps S401, S403, S405, and S408 of the embodiment shown in FIG. 4 .
  • the communication device 900 includes a processor 901 and an interface circuit 902 .
  • the processor 901 and the interface circuit 902 are coupled to each other.
  • the interface circuit 902 may be a transceiver or an input-output interface.
  • the communication device 900 may also include a memory 903, It is used to store instructions executed by the processor 901 or input data for the instructions executed by the processor 901 or data generated after the processor 901 executes the instructions.
  • the processor 901 is used to implement the functions of the above-mentioned processing unit 602, and the interface circuit 902 is used to implement the functions of the above-mentioned transceiver unit 601.
  • the chip When the above communication device is a chip applied to a terminal, the chip is used to implement the functions of the terminal in the above method embodiment.
  • the chip receives information from other modules in the terminal (such as radio frequency modules or antennas), which is sent to the terminal by network equipment or other devices; or, the chip sends information to other modules in the terminal (such as radio frequency modules or antennas) , this information is sent by the terminal to the network device or other devices.
  • the chip When the above communication device is a chip applied to network equipment, the chip is used to implement the functions of the network equipment in the above method embodiment.
  • the chip receives information from other modules in the network equipment (such as radio frequency modules or antennas), which is sent to the network equipment by the terminal or other equipment; or, the chip sends information to other modules in the network equipment (such as radio frequency modules or antennas) Send information, which is sent by network devices to terminals or other devices.
  • processor in the embodiment of the present application can be a central processing unit (CPU), or other general-purpose processor, digital signal processor (DSP), or application-specific integrated circuit (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor can be a microprocessor or any conventional processor.
  • a relationship between candidate antenna ports corresponding to each candidate value in at least one candidate value of the new antenna port field is defined, and the terminal can be configured according to the relationship DMRS is received on the determined antenna port.
  • the number of bits required for the antenna port field is reduced, thereby saving signaling overhead for indicating the DMRS antenna port.
  • the method steps in the embodiments of the present application can be implemented by hardware or by a processor executing software instructions.
  • Software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory In memory, register, hard disk, removable hard disk, compact disc read-only memory (CD-ROM) or any other form of storage medium well known in the art.
  • An exemplary storage medium is coupled to the processor such that the processor can read information from the storage medium and write information to the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and storage media may be located in an ASIC. Additionally, the ASIC may be located in the first node.
  • the processor and the storage medium may also exist in the terminal as discrete components.
  • An embodiment of the present application also provides a communication system, including the above communication device.
  • Embodiments of the present application also provide a computer-readable storage medium on which a computer program or instructions are stored. When the program or instructions are executed by a processor, the method described in the above embodiments is executed.
  • An embodiment of the present application also provides a computer program product, which when executed on a computing device causes the method described in the above embodiment to be executed.
  • the computer program product includes one or more computer programs or instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a terminal or other programmable device.
  • the computer program or instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another, e.g.
  • the computer program or instructions may be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired or wireless means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media.
  • the available media may be magnetic media, such as floppy disks, hard disks, and tapes; optical media, such as digital video optical disks; or semiconductor media, such as solid-state hard drives.
  • “at least one” refers to one or more, and “plurality” refers to two or more.
  • “And/or” describes the association of associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects before and after are an “or” relationship; in the formula of this application, the character “/” indicates that the related objects before and after are a kind of "division” Relationship.

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Abstract

Des modes de réalisation de la présente demande divulguent un procédé et un appareil de communication, ainsi qu'un support d'enregistrement. Le procédé s'applique à un système de communication à port unique. Le procédé comprend les étapes suivantes : un terminal reçoit une première signalisation ; selon le type de DMRS et la maxLength dans la première signalisation, déterminer une première relation correspondant au système de communication à port unique, dans la première relation, le nombre de ports d'antenne candidats correspondant à chacune d'au moins une valeur candidate d'un champ de port d'antenne étant 1 ; recevoir des DCI ; selon l'une de la ou des valeurs candidates indiquées par le champ de port d'antenne dans les DCI, déterminer un port d'antenne correspondant ; et recevoir un DMRS sur le port d'antenne déterminé. Dans les modes de réalisation de la présente demande, pour le système de communication à port unique, la nouvelle relation des ports d'antenne candidats correspondant à chacune de la ou des valeurs candidates du champ de port d'antenne est définie et le nombre de bits requis par le champ de port d'antenne est réduit, ce qui permet de réduire le surdébit de signalisation pour indiquer le port d'antenne DMRS.
PCT/CN2023/098070 2022-07-29 2023-06-02 Procédé et appareil de communication et support d'enregistrement WO2024021862A1 (fr)

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