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WO2020199910A1 - Procédé et appareil d'indication de configuration de transmission pour port dmrs - Google Patents

Procédé et appareil d'indication de configuration de transmission pour port dmrs Download PDF

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Publication number
WO2020199910A1
WO2020199910A1 PCT/CN2020/079556 CN2020079556W WO2020199910A1 WO 2020199910 A1 WO2020199910 A1 WO 2020199910A1 CN 2020079556 W CN2020079556 W CN 2020079556W WO 2020199910 A1 WO2020199910 A1 WO 2020199910A1
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WO
WIPO (PCT)
Prior art keywords
dmrs
port
ports
port set
dmrs port
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Ceased
Application number
PCT/CN2020/079556
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English (en)
Chinese (zh)
Inventor
苏昕
高秋彬
陈润华
王蒙军
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Filing date
Publication date
Application filed by China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Publication of WO2020199910A1 publication Critical patent/WO2020199910A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • This application relates to the field of wireless communication technologies, and in particular to a method and device for indicating a transmission configuration of a demodulation reference signal (DMRS) port.
  • DMRS demodulation reference signal
  • the use of coordinated multipoint transmission can improve cell edge coverage and provide a more balanced quality of service within the service area.
  • frequency bands increase, from the perspective of ensuring network coverage, relatively dense deployment of access points is required.
  • each transmission reception point (TRP) of the active wire can be divided into a number of relatively independent antenna panels, so the shape and number of ports of the entire array can be flexibly adapted to the deployment scenarios and business requirements Adjustment.
  • the TRP or antenna panels can also be connected by optical fibers for more flexible distributed deployment.
  • the cooperation between multiple TRPs or antenna panels is used to transmit or receive multiple beams from multiple angles, thereby reducing the adverse effects of blocking effects.
  • coordinated multi-point transmission technology can be divided into two types: coherent and non-coherent transmission.
  • coherent transmission during non-coherent transmission, each data stream is only mapped to part of the TRP or antenna panel.
  • non-coherent transmission has lower requirements for synchronization between transmission points and transmission capacity of the backhaul link, and is insensitive to many non-ideal factors in actual deployment conditions. Therefore, it is a key consideration for multipoint transmission technology.
  • Rel-16 is conducting research on non-coherent joint transmission (NC-JT) technology.
  • NC-JT transmission can use a single physical downlink control channel (physical downlink control channel, PDCCH) to schedule a single physical downlink shared channel (physical downlink shared channel, PDSCH) mode (called single-PDCCH mode), or multiple PDCCHs
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • a method for each scheduling corresponding PDSCH referred to as a multi-PDCCH method.
  • the DMRS ports need to be code division multiplexed (CDM) grouped according to the Quasi Co-Loacted (QCL) relationship.
  • CDM code division multiplexed
  • QCL Quasi Co-Loacted
  • the DMRS ports in the same DMRS CDM group are QCL. , That is, different DMRS CDM groups are used to indicate different QCL information.
  • the network side system sends the transmission configuration indication information of the DMRS port to the terminal through control signaling.
  • the DMRS ports allocated to the terminal should belong to at least two DMRS CDM group.
  • the current transmission configuration indication method of the DMRS port cannot well support the above requirements.
  • the embodiments of the present application provide a method and device for indicating transmission configuration of a DMRS port.
  • a method for indicating a transmission configuration of a DMRS port including:
  • the network device configures the terminal with at least two DMRS ports, the at least two DMRS ports belong to at least two DMRS code division multiplexing CDM groups, and the DMRS corresponding to the at least two DMRS ports is transmitted through at least one pre-DMRS symbol;
  • the network device sends downlink control information DCI to the terminal, where the DCI includes DMRS port allocation information, and the DMRS port allocation information is used to indicate the index of the at least two DMRS ports, the number of pre-DMRS symbols, and DMRS The number of CDM groups.
  • the at least two DMRS ports are two or three DMRS ports of the first type of DMRS, the number of pre-DMRS symbols is two, and the number of DMRS CDM groups is 2 pcs.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group
  • the first DMRS CDM group and the second DMRS CDM group are respectively DMRS CDM group.
  • the three DMRS ports include any two DMRS ports in the first port set, any one DMRS port in the second port set, or include any one DMRS port in the first port set, and Any two DMRS ports in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the at least two DMRS ports are the two DMRS ports of the second type of DMRS, the number of preamble DMRS symbols is 1 or 2, and the number of DMRS groups is 3. One.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set, or include any DMRS port in the first port set and the third port.
  • Any DMRS port in the port set or includes any DMRS port in the second port set and any DMRS port in the third port set.
  • the first port set includes DMRS port 0 and DMRS port 1
  • the second port set includes DMRS port 2, DMRS port 3, and the third port
  • the set includes DMRS port 4 and DMRS port 5.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7.
  • the port set includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11;
  • the DMRS port belongs to the first DMRS CDM group, the DMRS port in the second port set belongs to the second DMRS CDM group, and the DMRS port in the third port set belongs to the third DMRS CDM group.
  • the at least 3 DMRS ports are 3 or 4 DMRS ports of the second type DMRS, the number of pre-DMRS symbols is 2, and the number of DMRS CDM groups is 3.
  • the three DMRS ports include any DMRS port in the first port set, any DMRS port in the second port set, and any DMRS port in the third port set, or include the first port set.
  • Any two DMRS ports in the port set and any DMRS port in any one of the second port set and the third port set or include any two DMRS ports in the second port set
  • any DMRS port in any one of the first port set and the third port set or any two DMRS ports in the third port set, and the first port set and all Any DMRS port in any port set in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • the 4 DMRS ports include any two DMRS ports in any one of the first port set, the second port set, and the third port set, and any two DMRS ports in each of the remaining two port sets.
  • Any DMRS port, or any DMRS port in any one of the first port set, second port set, and third port set, and any three of any port set in the remaining two port sets DMRS ports or include any two DMRS ports in any two port sets in the first port set, the second port set, and the third port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group.
  • Two DMRS CDM group, the DMRS port in the third port set belongs to the third DMRS CDM group.
  • a method for indicating transmission configuration of a DMRS port including:
  • the terminal receives the DCI sent by the network device, where the DCI includes DMRS port allocation information, and determines the transmission configuration of the DMRS according to the DMRS port configuration information.
  • the DMRS port allocation information is used to indicate the index of at least 2 DMRS ports, the number of preamble DMRS symbols, and the number of DMRS code division multiplexing CDM groups; wherein, the at least 2 DMRS ports belong to at least 2 DMRS CDM group.
  • the at least two DMRS ports are two or three DMRS ports of the first type of DMRS, the number of pre-DMRS symbols is two, and the number of DMRS CDM groups is 2 pcs.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group
  • the first DMRS CDM group and the second DMRS CDM group are respectively DMRS CDM group.
  • the three DMRS ports include any two DMRS ports in the first port set, any one DMRS port in the second port set, or include any one DMRS port in the first port set, and Any two DMRS ports in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the at least two DMRS ports are the two DMRS ports of the second type of DMRS, the number of preamble DMRS symbols is 1 or 2, and the number of DMRS groups is 3. One.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set, or include any DMRS port in the first port set and the third port.
  • Any DMRS port in the port set or includes any DMRS port in the second port set and any DMRS port in the third port set.
  • the first port set includes DMRS port 0 and DMRS port 1
  • the second port set includes DMRS port 2, DMRS port 3, and the third port
  • the set includes DMRS port 4 and DMRS port 5.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7.
  • the port set includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11;
  • the DMRS port belongs to the first DMRS CDM group, the DMRS port in the second port set belongs to the second DMRS CDM group, and the DMRS port in the third port set belongs to the third DMRS CDM group.
  • the at least 3 DMRS ports are 3 or 4 DMRS ports of the second type DMRS, the number of pre-DMRS symbols is 2, and the number of DMRS CDM groups is 3.
  • the three DMRS ports include any DMRS port in the first port set, any DMRS port in the second port set, and any DMRS port in the third port set, or include the first port set.
  • Any two DMRS ports in the port set and any DMRS port in any one of the second port set and the third port set or include any two DMRS ports in the second port set
  • any DMRS port in any one of the first port set and the third port set or any two DMRS ports in the third port set, and the first port set and all Any DMRS port in any port set in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • the 4 DMRS ports include any two DMRS ports in any one of the first port set, the second port set, and the third port set, and any two DMRS ports in each of the remaining two port sets.
  • Any DMRS port, or any DMRS port in any one of the first port set, second port set, and third port set, and any three of any port set in the remaining two port sets DMRS ports or include any two DMRS ports in any two port sets in the first port set, the second port set, and the third port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • a network device including: a processing module configured to configure at least two DMRS ports for a terminal, the at least two DMRS ports belonging to at least two DMRS code division multiplexing CDM groups; and a sending module for Send downlink control information DCI to the terminal, where the DCI includes DMRS port allocation information, and the DMRS port allocation information is used to indicate the index of the at least two DMRS ports, the number of pre-DMRS symbols, and the DMRS CDM group Quantity.
  • the at least two DMRS ports are two or three DMRS ports of the first type of DMRS, the number of preamble DMRS symbols is two, and the number of DMRS CDM groups is 2 pcs.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group
  • the first DMRS CDM group and the second DMRS CDM group are respectively DMRS CDM group.
  • the three DMRS ports include any two DMRS ports in the first port set, any one DMRS port in the second port set, or include any one DMRS port in the first port set, and Any two DMRS ports in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the at least two DMRS ports are the two DMRS ports of the second type of DMRS, the number of preamble DMRS symbols is 1 or 2, and the number of DMRS groups is 3. One.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set, or include any DMRS port in the first port set and the third port.
  • Any DMRS port in the port set or includes any DMRS port in the second port set and any DMRS port in the third port set.
  • the first port set includes DMRS port 0 and DMRS port 1
  • the second port set includes DMRS port 2, DMRS port 3, and the third port
  • the set includes DMRS port 4 and DMRS port 5.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7.
  • the port set includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11;
  • the DMRS port belongs to the first DMRS CDM group, the DMRS port in the second port set belongs to the second DMRS CDM group, and the DMRS port in the third port set belongs to the third DMRS CDM group.
  • the at least 3 DMRS ports are 3 or 4 DMRS ports of the second type DMRS, the number of pre-DMRS symbols is 2, and the number of DMRS CDM groups is 3.
  • the three DMRS ports include any DMRS port in the first port set, any DMRS port in the second port set, and any DMRS port in the third port set, or include the first port set.
  • Any two DMRS ports in the port set and any DMRS port in any one of the second port set and the third port set or include any two DMRS ports in the second port set
  • any DMRS port in any one of the first port set and the third port set or any two DMRS ports in the third port set, and the first port set and all Any DMRS port in any port set in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • the 4 DMRS ports include any two DMRS ports in any one of the first port set, the second port set, and the third port set, and any two DMRS ports in each of the remaining two port sets.
  • Any DMRS port, or any DMRS port in any one of the first port set, second port set, and third port set, and any three of any port set in the remaining two port sets DMRS ports or include any two DMRS ports in any two port sets in the first port set, the second port set, and the third port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • a network device including:
  • the receiving module is configured to receive DCI sent by a network device, the DCI includes DMRS port allocation information, and the DMRS port allocation information is used to indicate the index of at least 2 DMRS ports, the number of pre-DMRS symbols, and the DMRS code division multiplexing The number of CDM groups is used; where the at least 2 DMRS ports belong to at least 2 DMRS CDM groups; the processing module is configured to determine the transmission configuration of the DMRS according to the DMRS port configuration information.
  • the at least two DMRS ports are two or three DMRS ports of the first type of DMRS, the number of pre-DMRS symbols is two, and the number of DMRS CDM groups is 2 pcs.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group
  • the first DMRS CDM group and the second DMRS CDM group are respectively DMRS CDM group.
  • the three DMRS ports include any two DMRS ports in the first port set, any one DMRS port in the second port set, or include any one DMRS port in the first port set, and Any two DMRS ports in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the at least two DMRS ports are the two DMRS ports of the second type of DMRS, the number of preamble DMRS symbols is 1 or 2, and the number of DMRS groups is 3. One.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set, or include any DMRS port in the first port set and the third port.
  • Any DMRS port in the port set or includes any DMRS port in the second port set and any DMRS port in the third port set.
  • the first port set includes DMRS port 0 and DMRS port 1
  • the second port set includes DMRS port 2, DMRS port 3, and the third port
  • the set includes DMRS port 4 and DMRS port 5.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7.
  • the port set includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11;
  • the DMRS port belongs to the first DMRS CDM group, the DMRS port in the second port set belongs to the second DMRS CDM group, and the DMRS port in the third port set belongs to the third DMRS CDM group.
  • the at least 3 DMRS ports are 3 or 4 DMRS ports of the second type DMRS, the number of pre-DMRS symbols is 2, and the number of DMRS CDM groups is 3.
  • the three DMRS ports include any DMRS port in the first port set, any DMRS port in the second port set, and any DMRS port in the third port set, or include the first port set.
  • Any two DMRS ports in the port set and any DMRS port in any one of the second port set and the third port set or include any two DMRS ports in the second port set
  • any DMRS port in any one of the first port set and the third port set or any two DMRS ports in the third port set, and the first port set and all Any DMRS port in any port set in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • the 4 DMRS ports include any two DMRS ports in any one of the first port set, the second port set, and the third port set, and any two DMRS ports in each of the remaining two port sets.
  • Any DMRS port, or any DMRS port in any one of the first port set, second port set, and third port set, and any three of any port set in the remaining two port sets DMRS ports or include any two DMRS ports in any two port sets in the first port set, the second port set, and the third port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • a communication device including: a processor, a memory, and a transceiver; the processor is configured to read computer instructions in the memory and execute according to the obtained program:
  • the DCI includes DMRS port allocation information
  • the DMRS port allocation information is used to indicate the index of the at least two DMRS ports and the number of preamble DMRS symbols, And the number of DMRS CDM groups.
  • the at least two DMRS ports are two or three DMRS ports of the first type of DMRS, the number of pre-DMRS symbols is two, and the number of DMRS CDM groups is 2 pcs.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group
  • the first DMRS CDM group and the second DMRS CDM group are respectively DMRS CDM group.
  • the three DMRS ports include any two DMRS ports in the first port set, any one DMRS port in the second port set, or include any one DMRS port in the first port set, and Any two DMRS ports in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the at least two DMRS ports are the two DMRS ports of the second type of DMRS, the number of preamble DMRS symbols is 1 or 2, and the number of DMRS groups is 3. One.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set, or include any DMRS port in the first port set and the third port.
  • Any DMRS port in the port set or includes any DMRS port in the second port set and any DMRS port in the third port set.
  • the first port set includes DMRS port 0 and DMRS port 1
  • the second port set includes DMRS port 2, DMRS port 3, and the third port
  • the set includes DMRS port 4 and DMRS port 5.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7.
  • the port set includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11;
  • the DMRS port belongs to the first DMRS CDM group, the DMRS port in the second port set belongs to the second DMRS CDM group, and the DMRS port in the third port set belongs to the third DMRS CDM group.
  • the at least 3 DMRS ports are 3 or 4 DMRS ports of the second type DMRS, the number of pre-DMRS symbols is 2, and the number of DMRS CDM groups is 3.
  • the three DMRS ports include any DMRS port in the first port set, any DMRS port in the second port set, and any DMRS port in the third port set, or include the first port set.
  • Any two DMRS ports in the port set and any DMRS port in any one of the second port set and the third port set or include any two DMRS ports in the second port set
  • any DMRS port in any one of the first port set and the third port set or any two DMRS ports in the third port set, and the first port set and all Any DMRS port in any port set in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • the 4 DMRS ports include any two DMRS ports in any one of the first port set, the second port set, and the third port set, and any two DMRS ports in each of the remaining two port sets.
  • Any DMRS port, or any DMRS port in any one of the first port set, second port set, and third port set, and any three of any port set in the remaining two port sets DMRS ports or include any two DMRS ports in any two port sets in the first port set, the second port set, and the third port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • a communication device including: a processor, a memory, and a transceiver; the processor is configured to read computer instructions in the memory and execute according to the obtained program:
  • the DCI includes DMRS port allocation information
  • the DMRS port allocation information is used to indicate the index of at least 2 DMRS ports, the number of pre-DMRS symbols, and the DMRS The number of code division multiplexing CDM groups; wherein the at least 2 DMRS ports belong to at least 2 DMRS CDM groups;
  • the transmission configuration of the DMRS is determined.
  • the at least two DMRS ports are two or three DMRS ports of the first type of DMRS, the number of pre-DMRS symbols is two, and the number of DMRS CDM groups is 2 pcs.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group
  • the first DMRS CDM group and the second DMRS CDM group are respectively DMRS CDM group.
  • the three DMRS ports include any two DMRS ports in the first port set, any DMRS port in the second port set, or include any DMRS port in the first port set, and Any two DMRS ports in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the at least two DMRS ports are the two DMRS ports of the second type of DMRS, the number of preamble DMRS symbols is 1 or 2, and the number of DMRS groups is 3. One.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set, or include any DMRS port in the first port set and the third port.
  • Any DMRS port in the port set or includes any DMRS port in the second port set and any DMRS port in the third port set.
  • the first port set includes DMRS port 0 and DMRS port 1
  • the second port set includes DMRS port 2, DMRS port 3, and the third port
  • the set includes DMRS port 4 and DMRS port 5.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7.
  • the port set includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11;
  • the DMRS port belongs to the first DMRS CDM group, the DMRS port in the second port set belongs to the second DMRS CDM group, and the DMRS port in the third port set belongs to the third DMRS CDM group.
  • the at least 3 DMRS ports are 3 or 4 DMRS ports of the second type DMRS, the number of pre-DMRS symbols is 2, and the number of DMRS CDM groups is 3.
  • the three DMRS ports include any DMRS port in the first port set, any DMRS port in the second port set, and any DMRS port in the third port set, or include the first port set.
  • Any two DMRS ports in the port set and any DMRS port in any one of the second port set and the third port set or include any two DMRS ports in the second port set
  • any DMRS port in any one of the first port set and the third port set or any two DMRS ports in the third port set, and the first port set and all Any DMRS port in any port set in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • the 4 DMRS ports include any two DMRS ports in any one of the first port set, the second port set, and the third port set, and any two DMRS ports in each of the remaining two port sets.
  • Any DMRS port, or any DMRS port in any one of the first port set, second port set, and third port set, and any three of any port set in the remaining two port sets DMRS ports or include any two DMRS ports in any two port sets in the first port set, the second port set, and the third port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • a computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause the computer to execute any of the above-mentioned first aspects. The method described.
  • a computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause the computer to execute any of the above-mentioned second aspect The method described.
  • the DMRS port allocation information is used to indicate this DMRS Port allocation information, and send the DMRS port allocation information to the terminal so that the terminal can determine the transmission configuration of the DMRS.
  • the embodiments of this application can fill in the gaps in the existing communication standards and improve the existing communication standards.
  • 1a and 1b are schematic diagrams of DMRS resources of DMRS type 1 in an embodiment of the application;
  • FIGS. 2a and 2b are schematic diagrams of DMRS resources of DMRS type 2 in an embodiment of this application;
  • FIG. 3 is a schematic diagram of a DMRS port transmission configuration instruction flow diagram implemented on the network device side according to an embodiment of the application;
  • FIG. 4 is a schematic diagram of a DMRS port transmission configuration instruction flow diagram implemented on the terminal side according to an embodiment of the application;
  • FIG. 5 is a schematic structural diagram of a terminal provided by an embodiment of the application.
  • FIG. 6 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • FIG. 7 is a schematic structural diagram of a communication device provided by an embodiment of the application.
  • FIG. 8 is a schematic structural diagram of a communication device provided by another embodiment of this application.
  • the embodiments of the present application provide a method and device for indicating transmission configuration of DMRS ports, which can support NC-JT transmission that simultaneously sends different data streams from multiple non-QCL TRPs or antenna panels to the terminal.
  • the rank is greater than or equal to 2
  • the DMRS ports allocated to the terminal belong to at least two DMRS CDM groups that do not contain data
  • the newly defined DMRS port allocation information is used to indicate the DMRS port allocation status.
  • the embodiments of the present application are applicable to NR systems, such as the Rel-16 system, and also applicable to further evolved systems.
  • terminal in the embodiments of this application, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a way to provide users with voice and/ Or devices with data connectivity, for example, handheld devices with wireless connectivity, vehicle-mounted devices, etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • terminals are: mobile phones (mobile phones), tablets, notebook computers, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, and augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid)
  • the "network equipment” in the embodiment of this application may be a RAN node or a base station.
  • RAN is the part of the network that connects the terminal to the wireless network.
  • a RAN node (or device) is a node (or device) in a radio access network, and can also be called a base station.
  • RAN nodes are: 5G base station (generation Node B, gNB), transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller) , RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (for example, home evolved NodeB, or home Node B, HNB ), baseband unit (BBU), or wireless fidelity (Wifi) access point (AP), etc.
  • the RAN may include a centralized unit (CU) node and a distributed unit (DU) node.
  • the multiplexing mode of the DMRS port adopts a combination of frequency division multiplexing (FDM) and CDM.
  • FDM frequency division multiplexing
  • the DMRS port can perform orthogonal code division multiplexing, and the DMRS CDM groups are distinguished by FDM.
  • the DMRS CDM group refers to a DMRS CDM group that does not contain data.
  • the DMRS CDM group involved refers to the DMRS CDM group that does not contain data.
  • the NR system supports two DMRS types: DMRS type 1 (ie, the first DMRS type) and DMRS type 2 (ie, the second DMRS type).
  • DMRS type 1 ie, the first DMRS type
  • DMRS type 2 ie, the second DMRS type
  • the DMRS multiplexing mode and DMRS configuration mode under DMRS type 1 can be shown in Figure 1a and Figure 1b
  • the DMRS multiplexing mode and DMRS configuration mode under DMRS type 2 can be shown in Figure 2a and Figure 2b.
  • DMRS type 1 when only one front-load symbol (front-load symbol) is configured (Orthogonal Frequency Division Multiplex (OFDM) symbol numbered 3 in the figure)
  • the symbol includes two sets of frequency-divided comb resources to form two DMRS CDM groups, and each DMRS CDM group supports the multiplexing of two DMRS ports through an orthogonal cover code (Orthogonal Cover Code, OCC) method.
  • the two DMRS CDM groups support up to 4 DMRS ports.
  • each pre-DMRS symbol when two pre-DMRS symbols are configured (OFDM symbols numbered 3 and 4 in the figure), each pre-DMRS symbol includes two sets of frequency-divided comb resources, forming two DMRS In the CDM group, each DMRS CDM group supports the multiplexing of 2 DMRS ports through OCC. Each pre-DMRS symbol can support 4 DMRS ports, so these 2 pre-DMRS symbols can support up to 8 DMRS ports.
  • DMRS type 2 when only one pre-DMRS symbol is configured (the OFDM symbol numbered 3 in the figure), the subcarriers in this symbol can be divided into three groups to form three DMRS CDM groups Each DMRS CDM group is composed of two adjacent subcarriers, and FDM multiplexing is used between the groups. Each DMRS CDM group supports 2 DMRS port multiplexing through OCC. The 3 DMRS CDM groups support up to 6 DMRS port.
  • each pre-DMRS symbol when two pre-DMRS symbols are configured (the OFDM symbols numbered 3 and 4 in the figure), each pre-DMRS symbol includes 3 groups of frequency division resources, forming 3 DMRS CDM groups Each DMRS CDM group supports the multiplexing of 2 DMRS ports through OCC. Each pre-DMRS symbol can support 6 DMRS ports, so these 2 pre-DMRS symbols can support up to 12 DMRS ports.
  • the DMRS port allocation information includes the value of "value" in Table 1 to Table 4.
  • the base station when DMRS type 1 is used and only one pre-DMRS symbol is configured, if the base station allocates DMRS port 0 and DMRS port 2 to the terminal, and configures 2 DMRS CDM groups (according to the provisions in TS38.212, DMRS port 0 and DMRS port 1 belong to different DMRS CDM groups respectively), the base station sends downlink control information (DCI) to the terminal.
  • the DCI includes DMRS port allocation information.
  • the DMRS port allocation information The value is 11.
  • the terminal can know the DMRS port 0 and DMRS port 2 allocated by the base station, and determine that DMRS port 0 and DMRS port 2 are not quasi co-located (QCL).
  • the base station when DMRS type 2 is used and two pre-DMRS symbols are configured, if the base station allocates DMRS port 0 and DMRS port 1 to the terminal, and configures 3 DMRS CDM groups (according to the provisions in TS38.212, DMRS port 0 and DMRS port 1 belong to the same DMRS CDM group), the base station sends DCI to the terminal.
  • the DCI includes DMRS port allocation information.
  • Table 4 the value of the DMRS port configuration information is 17.
  • the terminal can learn the DMRS port 0 and DMRS port 1 allocated by the base station, and determine that the DMRS port 0 and DMRS port 1 are quasi co-located (QCL).
  • the DMRS ports in the same DMRS CDM group are QCL, and the DMRS ports in different DMRS CDM groups may be QCL or not QCL.
  • QCL means that the large-scale parameters of the channel experienced by the symbol on a certain antenna port can be inferred from the channel experienced by the symbol on another antenna port.
  • the large-scale parameters may include delay spread, average delay, Doppler spread, Doppler shift, average gain, and spatial reception parameters.
  • the multiple TRPs or antenna panels involved in the multipoint transmission process may correspond to multiple TRPs or multiple sectors with different orientations of the antenna panels in different geographic locations.
  • the spatial difference of each TRP or antenna panel will lead to the difference of large-scale channel parameters of the receiving links from different TRPs or antenna panels, such as Doppler frequency. Deviation, delay extension, etc.
  • the large-scale parameters of the channel directly affect the adjustment and optimization of filter coefficients during channel estimation.
  • different channel estimation filter parameters should be used to adapt to the corresponding channel propagation characteristics.
  • the so-called QCL of the two antenna ports in the sense of some large-scale parameters means that these large-scale parameters of the two antenna ports are the same.
  • the terminal can think that the two antenna ports are sent from the same location (i.e., quasi co-site site).
  • the NR system divides several channel large-scale parameters into the following 4 types, corresponding to 4 QCLs Type, so that the system can configure or instruct according to different scenarios:
  • QCL Type A QCL-TypeA: The parameters involved in this type of QCL include: ⁇ Doppler frequency shift, Doppler spread, average delay, delay spread ⁇ . Except for the spatial reception parameters, other large-scale parameters are the same. For frequency bands below 6 GHz, spatial reception parameters may not be needed.
  • QCL-TypeB The parameters involved in this type of QCL include: ⁇ Doppler frequency shift, Doppler extension ⁇ . Only for the following two situations in the frequency band below 6GHz:
  • the wide-beam reference signal can be a QCL reference.
  • time-frequency tracking reference signals tilt reference signals, TRS
  • TRS tracking reference signals
  • CSI-RS channel state information reference signals
  • the Doppler parameters experienced by the signals sent from the same site are still approximately the same.
  • the scatterers covered by beams of different widths are different, which will have a more obvious impact on the delay spread and average delay parameters experienced by signal propagation.
  • CSI-RS and TRS are QCL in the sense of delay spread and average delay parameters.
  • Case 2 The time domain density of the target reference signal is insufficient, but the frequency domain density is sufficient.
  • the frequency domain density of CSI-RS is sufficient for estimating frequency domain parameters such as average delay and delay spread, so these parameters can be obtained from the CSI-RS itself.
  • QCL Type C QCL-TypeC: The parameters involved in this type of QCL include: ⁇ Doppler frequency shift, average delay ⁇ . Only for the frequency band above 6GHz, the synchronization block (SSB) is used as the QCL reference. Due to the limited resources and density occupied by SSB, it is generally assumed that only some rough large-scale information can be obtained from SSB, namely Doppler shift and average delay, while other large-scale parameters need to be obtained from the target reference signal itself.
  • SSB synchronization block
  • QCL type D QCL-TypeD
  • the parameters involved in this type of QCL include: ⁇ spatial receiving parameters ⁇ .
  • this parameter is mainly for the frequency band above 6GHz, it is regarded as a QCL type alone.
  • FIG. 3 is a schematic diagram of a DMRS port transmission configuration instruction flow diagram implemented on the network device side according to an embodiment of this application.
  • the flow may include:
  • the network device configures at least two DMRS ports for the terminal, and the at least two DMRS ports belong to at least two DMRS CDM groups.
  • the DMRS corresponding to the at least two DMRS ports is transmitted through at least one preamble DMRS symbol.
  • the network device sends DCI to the terminal, where the DCI includes DMRS port allocation information, and the DMRS port allocation information is used to indicate the index of the at least two DMRS ports, the number of pre-DMRS symbols, and the number of DMRS CDM groups .
  • the DMRS port allocation information may be DMRS port allocation information newly defined based on the DMRS port allocation method in TS38.212 in the embodiment of the present application.
  • the two DMRS ports are ⁇ DMRS port 0, DMRS port 3 ⁇ or ⁇ DMRS port 1, DMRS port 2 ⁇ or ⁇ DMRS port 1, DMRS port 3 ⁇ , there is no corresponding value in Table 1 to indicate the above allocation, so Table 1 needs to be extended, that is, new DMRS port allocation information (ie value) needs to be defined, such as for allocated ⁇ DMRS port 0, DMRS Port 3 ⁇ defines value A, defines value B for allocated ⁇ DMRS port 1, DMRS port 2 ⁇ , and defines value C for allocated ⁇ DMRS port 1, DMRS port 3 ⁇ .
  • the values of value A, value B, and value C can be the values in the value range reserved for value in Table 1.
  • DMRS type 1 when DMRS type 1 is used and one pre-DMRS symbol is configured, if the network device needs to configure two DMRS ports for the terminal and the two DMRS ports belong to different DMRS CDM groups, you can Assign DMRS port 0 and DMRS port 2 to the terminal.
  • the three DMRS ports are ⁇ DMRS port 0, DMRS port 1, DMRS port 3 ⁇ or ⁇ DMRS port 0, DMRS port 2, DMRS port 3 ⁇ or ⁇ DMRS port 1, DMRS port 2, DMRS port 3 ⁇ , then there is no corresponding value in Table 1 to indicate the above allocation, so Table 1 needs to be extended, that is, new DMRS port allocation information (ie value ), for example, define value D for allocated ⁇ DMRS port 0, DMRS port 1, DMRS port 3 ⁇ , define value E for allocated ⁇ DMRS port 0, DMRS port 2, DMRS port 3 ⁇ , and define value E for allocated ⁇ DMRS port 1 , DMRS port 2 and DMRS port 3 ⁇ define value F.
  • the values of value D, value E, and value F may be the values in the reserved value range in Table 1.
  • DMRS type 1 when DMRS type 1 is used and 1 pre-DMRS symbol is configured, if the network device needs to configure 3 DMRS ports for the terminal and the 3 DMRS ports belong to 2 different DMRS CDM groups, Then you can assign DMRS port 0, DMRS port 1 and DMRS port 2 to the terminal.
  • the DMRS port allocation information corresponding to the corresponding DMRS port allocation situation is expanded in the embodiment of this application, that is, new DMRS port allocation information is defined to Indicate the above DMRS port allocation.
  • new DMRS port allocation information is defined to Indicate the above DMRS port allocation.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7.
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the corresponding value can be defined for one or more of the following port combinations to indicate the corresponding DMRS port allocation: ⁇ 0, 2 ⁇ , ⁇ 0, 3 ⁇ , ⁇ 0, 6 ⁇ , ⁇ 0, 7 ⁇ , ⁇ 1, 2 ⁇ , ⁇ 1, 3 ⁇ , ⁇ 1, 6 ⁇ , ⁇ 1, 7 ⁇ , ⁇ 4, 2 ⁇ , ⁇ 4, 3 ⁇ , ⁇ 4, 6 ⁇ , ⁇ 4, 7 ⁇ , ⁇ 5, 2 ⁇ , ⁇ 5, 3 ⁇ , ⁇ 5, 6 ⁇ , ⁇ 5, 7 ⁇ .
  • the newly defined value may be a value in the reserved value range in Table 2.
  • the 3 DMRS ports include any two DMRS ports in the first port set, any DMRS port in the second port set, or include the first port set. Any one DMRS port in a port set, and any two DMRS ports in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7; The DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the corresponding value can be defined for one or more of the following port combinations to indicate the corresponding DMRS port allocation: ⁇ 0, 1, 2 ⁇ , ⁇ 0, 1, 3 ⁇ , ⁇ 0, 1, 6 ⁇ , ⁇ 0, 1, 7 ⁇ , ⁇ 0, 4, 2 ⁇ , ⁇ 0, 4, 3 ⁇ , ⁇ 0, 4, 6 ⁇ , ⁇ 0, 4, 7 ⁇ , ⁇ 0, 5, 2 ⁇ , ⁇ 0, 5, 3 ⁇ , ⁇ 0, 5, 6 ⁇ , ⁇ 0, 5, 7 ⁇ , ⁇ 1, 4, 2 ⁇ , ⁇ 1, 4, 3 ⁇ , ⁇ 1, 4, 6 ⁇ , ⁇ 1, 4, 7 ⁇ , ⁇ 1, 5, 2 ⁇ , ⁇ 1, 5, 3 ⁇ , ⁇ 1, 5, 6 ⁇ , ⁇ 1, 5, 7 ⁇ , ⁇ 4, 5, 2 ⁇ , ⁇ 4, 5, 3 ⁇ , ⁇ 4, 5, 6 ⁇ , ⁇ 4, 5, 7 ⁇ .
  • the above only lists the combination of two DMRS ports in the first port set and one DMRS port in the second port set. It can also include one DMRS port in the first port set and one DMRS port in the second port set. The combination of 2 DMRS ports will not be listed here.
  • the newly defined value may be a value in the reserved value range in Table 2.
  • the DMRS port allocation information corresponding to the corresponding DMRS port allocation situation is expanded in the embodiment of this application, that is, a new definition DMRS port allocation information to indicate the above DMRS port allocation.
  • the two DMRS ports allocated by the network device to the terminal include any DMRS port in the first port set and any DMRS port in the second port set, or include any DMRS port in the first port set And any DMRS port in the third port set, or include any DMRS port in the second port set and any DMRS port in the third port set.
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group
  • the DMRS ports in the third port set belong to the third DMRS CDM group .
  • the first port set when the number of the pre-DMRS symbol is 1, the first port set includes DMRS port 0 and DMRS port 1, the second port set includes DMRS port 2, DMRS port 3, and the third port The set includes DMRS port 4 and DMRS port 5.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3.
  • DMRS port 8 DMRS port 9
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • rank 2, and 2 DMRS ports need to be allocated to the terminal.
  • the DMRS CDM group that does not contain data is 3, there is no value that can make the allocated DMRS ports belong to different DMRSs. CDM group.
  • at least one value can be used, which corresponds to the situation where the DMRS port crosses the CDM group.
  • value A corresponds to the case where the allocated DMRS port is (0, 2).
  • rank 2, and 2 DMRS ports need to be allocated to the terminal.
  • the CDM group that does not contain data is 3, no matter whether the number of pre-DMRS symbols is 1 or 2, there is no value.
  • the DMRS port allocation information corresponding to the corresponding DMRS port allocation situation is expanded in this embodiment of the application, that is, new DMRS port allocation information is defined to Indicate the above DMRS port allocation.
  • new DMRS port allocation information is defined to Indicate the above DMRS port allocation.
  • the 3 DMRS ports include any DMRS port in the first port set, any DMRS port in the second port set, and the third port set Any one of the DMRS ports, or includes any two DMRS ports in the first port set and any one DMRS port in any one of the second port set and the third port set, or includes all Any two DMRS ports in the second port set and any DMRS port in any port set in the first port set and the third port set, or include any two in the third port set DMRS ports and any DMRS port in any one of the first port set and the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group.
  • Two DMRS CDM group, the DMRS port in the third port set belongs to the third DMRS CDM group.
  • rank 3, and 3 DMRS ports need to be allocated to the terminal.
  • the CDM group that does not contain data is 3 and the number of pre-DMRS symbols is 2, there is no value that can make the allocated DMRS port belong to Different CDM groups.
  • at least one value can be used respectively, corresponding to the situation where the DMRS port crosses the CDM group.
  • the 4 DMRS ports include any two DMRS ports in any one of the first port set, the second port set, and the third port set, and Any one DMRS port in each port set in the remaining two port sets, or any one DMRS port in any one of the first port set, the second port set, and the third port set, and the other two Any three DMRS ports in any port set in the port set, or include any two port sets in the first port set, the second port set, and the third port set. Any two DMRS ports.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group.
  • Two DMRS CDM group, the DMRS port in the third port set belongs to the third DMRS CDM group.
  • rank 4 and 4 DMRS ports need to be allocated to the terminal.
  • the CDM group that does not contain data is 3 and the number of pre-DMRS symbols is 2, there is no value that can make the allocated DMRS port belong to Different DMRS CDM groups.
  • at least one value can be used respectively, corresponding to the situation where the DMRS port crosses the CDM group.
  • DMRS port allocation and instructions can be performed according to the existing DMRS port allocation information in Table 1, Table 2, Table 3, or Table 4. It is also possible to expand the DMRS port combinations not given in Table 1, Table 2, Table 3 or Table 4, that is, define new DMRS port allocation information (value values) for new DMRS port combinations.
  • FIG. 4 is a schematic diagram of a DMRS port transmission configuration instruction flow diagram implemented on the terminal side according to an embodiment of this application.
  • the flow may include:
  • a terminal receives DCI sent by a network device, where the DCI includes DMRS port allocation information, and the DMRS port allocation information is used to indicate the index of at least 2 DMRS ports, the number of pre-DMRS symbols, and the number of DMRS CDM groups; Wherein, the at least two DMRS ports belong to at least two DMRS CDM groups that do not contain data.
  • the preamble DMRS symbol is used to transmit the DMRS corresponding to the at least two DMRS ports.
  • the terminal determines the transmission configuration of the DMRS according to the DMRS port configuration information.
  • the DMRS port allocation information is used to indicate this DMRS Port allocation information, and send the DMRS port allocation information to the terminal so that the terminal can determine the transmission configuration of the DMRS.
  • the embodiments of this application can fill in the gaps in the existing communication standards and improve the existing communication standards.
  • the embodiments of the present application also provide a terminal and a network device, and the terminal and the network device can be respectively applied to the foregoing embodiments.
  • FIG. 5 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • the network device may include: a processing module 501 and a sending module 502, where:
  • the processing module 501 is configured to configure at least two DMRS ports for the terminal, where the at least two DMRS ports belong to at least two DMRS CDM groups;
  • the sending module 502 is configured to send DCI to the terminal, where the DCI includes DMRS port allocation information, and the DMRS port allocation information is used to indicate the index of the at least two DMRS ports, the number of preamble DMRS symbols, and the DMRS The number of CDM groups.
  • the at least two DMRS ports are two or three DMRS ports of the first type of DMRS, the number of pre-DMRS symbols is two, and the number of DMRS CDM groups is 2 pcs.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group
  • the first DMRS CDM group and the second DMRS CDM group are respectively DMRS CDM group.
  • the three DMRS ports include any two DMRS ports in the first port set, any one DMRS port in the second port set, or include any one DMRS port in the first port set, and Any two DMRS ports in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the at least two DMRS ports are the two DMRS ports of the second type of DMRS, the number of preamble DMRS symbols is 1 or 2, and the number of DMRS groups is 3. One.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set, or include any DMRS port in the first port set and the third port.
  • the first port set includes DMRS port 0 and DMRS port 1
  • the second port set includes DMRS port 2, DMRS port 3, and the third port
  • the set includes DMRS port 4 and DMRS port 5.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7.
  • the port set includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11;
  • the DMRS port belongs to the first DMRS CDM group, the DMRS port in the second port set belongs to the second DMRS CDM group, and the DMRS port in the third port set belongs to the third DMRS CDM group.
  • the at least 3 DMRS ports are 3 or 4 DMRS ports of the second type DMRS, the number of pre-DMRS symbols is 2, and the number of DMRS CDM groups is 3.
  • the three DMRS ports include any DMRS port in the first port set, any DMRS port in the second port set, and any DMRS port in the third port set, or include the first port set.
  • Any two DMRS ports in the port set and any DMRS port in any one of the second port set and the third port set or include any two DMRS ports in the second port set
  • any DMRS port in any one of the first port set and the third port set or any two DMRS ports in the third port set, and the first port set and all Any DMRS port in any port set in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • the 4 DMRS ports include any two DMRS ports in any one of the first port set, the second port set, and the third port set, and any two DMRS ports in each of the remaining two port sets.
  • Any DMRS port, or any DMRS port in any one of the first port set, second port set, and third port set, and any three of any port set in the remaining two port sets DMRS ports or include any two DMRS ports in any two port sets in the first port set, the second port set, and the third port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group.
  • Two DMRS CDM group, the DMRS port in the third port set belongs to the third DMRS CDM group.
  • each module in the above-mentioned network device can refer to the description of the function implemented by the network device in the foregoing embodiment, and will not be repeated here.
  • the terminal may include: a receiving module 601 and a processing module 602, where:
  • the receiving module 601 is configured to receive DCI sent by a network device, the DCI includes DMRS port allocation information, and the DMRS port allocation information is used to indicate the index of at least 2 DMRS ports, the number of pre-DMRS symbols, and the DMRS CDM group Wherein, the at least 2 DMRS ports belong to at least 2 DMRS CDM groups that do not contain data;
  • the processing module 602 is configured to determine the transmission configuration of the DMRS according to the DMRS port configuration information.
  • the at least two DMRS ports are two or three DMRS ports of the first type of DMRS, the number of pre-DMRS symbols is two, and the number of DMRS CDM groups is 2 pcs.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group
  • the first DMRS CDM group and the second DMRS CDM group are respectively DMRS CDM group.
  • the three DMRS ports include any two DMRS ports in the first port set, any one DMRS port in the second port set, or include any one DMRS port in the first port set, and Any two DMRS ports in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the at least two DMRS ports are the two DMRS ports of the second type of DMRS, the number of preamble DMRS symbols is 1 or 2, and the number of DMRS groups is 3. One.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set, or include any DMRS port in the first port set and the third port.
  • Any DMRS port in the port set or includes any DMRS port in the second port set and any DMRS port in the third port set.
  • the first port set includes DMRS port 0 and DMRS port 1
  • the second port set includes DMRS port 2, DMRS port 3, and the third port
  • the set includes DMRS port 4 and DMRS port 5.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7.
  • the port set includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11; in the first port set The DMRS port belongs to the first DMRS CDM group, the DMRS port in the second port set belongs to the second DMRS CDM group, and the DMRS port in the third port set belongs to the third DMRS CDM group.
  • the at least 3 DMRS ports are 3 or 4 DMRS ports of the second type DMRS, the number of pre-DMRS symbols is 2, and the number of DMRS CDM groups is 3.
  • the three DMRS ports include any DMRS port in the first port set, any DMRS port in the second port set, and any DMRS port in the third port set, or include the first port set.
  • Any two DMRS ports in the port set and any DMRS port in any one of the second port set and the third port set or include any two DMRS ports in the second port set
  • any DMRS port in any one of the first port set and the third port set or any two DMRS ports in the third port set, and the first port set and all Any DMRS port in any port set in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • the 4 DMRS ports include any two DMRS ports in any one of the first port set, the second port set, and the third port set, and any two DMRS ports in each of the remaining two port sets.
  • Any DMRS port, or any DMRS port in any one of the first port set, second port set, and third port set, and any three of any port set in the remaining two port sets DMRS ports or include any two DMRS ports in any two port sets in the first port set, the second port set, and the third port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group.
  • Two DMRS CDM group, the DMRS port in the third port set belongs to the third DMRS CDM group.
  • an embodiment of the present application also provides a communication device, which can implement the functions of the network device side in the foregoing embodiment.
  • the communication device may include a processor 701, a memory 702, a transceiver 703, and a bus interface 704.
  • the processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 can store data used by the processor 701 when performing operations.
  • the transceiver 703 is used to receive and send data under the control of the processor 701.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 701 and various circuits of the memory represented by the memory 702 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 can store data used by the processor 701 when performing operations.
  • the process disclosed in the embodiment of the present application may be applied to the processor 701 or implemented by the processor 701.
  • each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 701 or instructions in the form of software.
  • the processor 701 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the embodiments of the present application The disclosed methods, steps and logic block diagrams.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702, and completes the steps of the signal processing flow in combination with its hardware.
  • the processor 701 is configured to read computer instructions in the memory 702 and execute the functions implemented on the network device side in the process shown in FIG. 3.
  • the processor 701 executes according to the obtained program:
  • the DCI includes DMRS port allocation information
  • the DMRS port allocation information is used to indicate the index of the at least two DMRS ports and the number of preceding DMRS symbols , And the number of DMRS CDM groups.
  • the at least two DMRS ports are two or three DMRS ports of the first type of DMRS, the number of pre-DMRS symbols is two, and the number of DMRS CDM groups is 2 pcs.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group
  • the first DMRS CDM group and the second DMRS CDM group are respectively DMRS CDM group.
  • the three DMRS ports include any two DMRS ports in the first port set, any one DMRS port in the second port set, or include any one DMRS port in the first port set, and Any two DMRS ports in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the at least two DMRS ports are the two DMRS ports of the second type of DMRS, the number of preamble DMRS symbols is 1 or 2, and the number of DMRS groups is 3. One.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set, or include any DMRS port in the first port set and the third port.
  • Any DMRS port in the port set or includes any DMRS port in the second port set and any DMRS port in the third port set.
  • the first port set includes DMRS port 0 and DMRS port 1
  • the second port set includes DMRS port 2, DMRS port 3, and the third port
  • the set includes DMRS port 4 and DMRS port 5.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7.
  • the port set includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11;
  • the DMRS port belongs to the first DMRS CDM group, the DMRS port in the second port set belongs to the second DMRS CDM group, and the DMRS port in the third port set belongs to the third DMRS CDM group.
  • the at least 3 DMRS ports are 3 or 4 DMRS ports of the second type DMRS, the number of pre-DMRS symbols is 2, and the number of DMRS CDM groups is 3.
  • the three DMRS ports include any DMRS port in the first port set, any DMRS port in the second port set, and any DMRS port in the third port set, or include the first port set.
  • Any two DMRS ports in the port set and any DMRS port in any one of the second port set and the third port set or include any two DMRS ports in the second port set
  • any DMRS port in any one of the first port set and the third port set or any two DMRS ports in the third port set, and the first port set and all Any DMRS port in any port set in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • the 4 DMRS ports include any two DMRS ports in any one of the first port set, the second port set, and the third port set, and any two DMRS ports in each of the remaining two port sets.
  • Any DMRS port, or any DMRS port in any one of the first port set, second port set, and third port set, and any three of any port set in the remaining two port sets DMRS ports or include any two DMRS ports in any two port sets in the first port set, the second port set, and the third port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group.
  • Two DMRS CDM group, the DMRS port in the third port set belongs to the third DMRS CDM group.
  • an embodiment of the present application also provides a communication device, which can implement the terminal side functions in the foregoing embodiments.
  • the communication device may include: a processor 801, a memory 802, a transceiver 803, and a bus interface 804.
  • the processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 can store data used by the processor 801 when performing operations.
  • the transceiver 803 is used to receive and send data under the control of the processor 801.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 801 and various circuits of the memory represented by the memory 802 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 can store data used by the processor 801 when performing operations.
  • the process disclosed in the embodiment of the present application may be applied to the processor 801 or implemented by the processor 801.
  • each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 801 or instructions in the form of software.
  • the processor 801 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the embodiments in this application
  • the disclosed methods, steps and logic block diagrams may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 802, and the processor 801 reads the information in the memory 802, and completes the steps of the signal processing flow in combination with its hardware.
  • the processor 801 is configured to read computer instructions in the memory 802 and execute functions implemented on the terminal side in the process shown in FIG. 4.
  • the processor 801 executes according to the obtained program:
  • the DCI includes DMRS port allocation information, the DMRS port allocation information is used to indicate the index of at least two DMRS ports, the number of preamble DMRS symbols, and The number of DMRS code division multiplexing CDM groups; wherein, the at least 2 DMRS ports belong to at least 2 DMRS CDM groups;
  • the transmission configuration of the DMRS is determined.
  • the at least two DMRS ports are two or three DMRS ports of the first type of DMRS, the number of pre-DMRS symbols is two, and the number of DMRS CDM groups is 2 pcs.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group
  • the DMRS ports in the second port set belong to the second DMRS CDM group
  • the first DMRS CDM group and the second DMRS CDM group are respectively DMRS CDM group.
  • the three DMRS ports include any two DMRS ports in the first port set, any one DMRS port in the second port set, or include any one DMRS port in the first port set, and Any two DMRS ports in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 4, and DMRS port 5.
  • the second port set includes DMRS port 2, DMRS port 3, DMRS port 6, and DMRS port 7;
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the second DMRS CDM group.
  • the at least two DMRS ports are the two DMRS ports of the second type of DMRS, the number of preamble DMRS symbols is 1 or 2, and the number of DMRS groups is 3. One.
  • the two DMRS ports include any DMRS port in the first port set and any DMRS port in the second port set, or include any DMRS port in the first port set and the third port.
  • Any DMRS port in the port set or includes any DMRS port in the second port set and any DMRS port in the third port set.
  • the first port set includes DMRS port 0 and DMRS port 1
  • the second port set includes DMRS port 2, DMRS port 3, and the third port
  • the set includes DMRS port 4 and DMRS port 5.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7.
  • the port set includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11;
  • the DMRS port belongs to the first DMRS CDM group, the DMRS port in the second port set belongs to the second DMRS CDM group, and the DMRS port in the third port set belongs to the third DMRS CDM group.
  • the at least 3 DMRS ports are 3 or 4 DMRS ports of the second type DMRS, the number of pre-DMRS symbols is 2, and the number of DMRS CDM groups is 3.
  • the three DMRS ports include any DMRS port in the first port set, any DMRS port in the second port set, and any DMRS port in the third port set, or include the first port set.
  • Any two DMRS ports in the port set and any DMRS port in any one of the second port set and the third port set or include any two DMRS ports in the second port set
  • any DMRS port in any one of the first port set and the third port set or any two DMRS ports in the third port set, and the first port set and all Any DMRS port in any port set in the second port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group. Two DMRS CDM group.
  • the 4 DMRS ports include any two DMRS ports in any one of the first port set, the second port set, and the third port set, and any two DMRS ports in each of the remaining two port sets.
  • Any DMRS port, or any DMRS port in any one of the first port set, second port set, and third port set, and any three of any port set in the remaining two port sets DMRS ports or include any two DMRS ports in any two port sets in the first port set, the second port set, and the third port set.
  • the first port set includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7, and the second port set includes DMRS port 2, DMRS port 3, and DMRS port 8.
  • the third port set includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11.
  • the DMRS ports in the first port set belong to the first DMRS CDM group, and the DMRS ports in the second port set belong to the first DMRS CDM group.
  • Two DMRS CDM group, the DMRS port in the third port set belongs to the third DMRS CDM group.
  • the embodiments of the present application also provide a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause the computer to execute what is executed by the terminal in the foregoing embodiment method.
  • the embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to make the computer execute the execution of the network device in the above-mentioned embodiment Methods.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

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Abstract

L'invention concerne un procédé et un appareil d'indication de configuration de transmission pour des ports DMRS. Dans la présente invention, le procédé comprend les étapes suivantes : un dispositif de réseau configure au moins deux ports DMRS pour un terminal, les au moins deux ports DMRS appartenant à au moins deux groupes CDM DMRS ; et le dispositif de réseau envoie des DCI au terminal, les DCI comprenant des informations d'attribution de port DMRS, et les informations d'attribution de port DMRS étant utilisées pour indiquer des indices d'au moins deux ports DMRS, le nombre de symboles DMRS chargés avant et le nombre de groupes CDM DMRS ne contenant pas de données.
PCT/CN2020/079556 2019-04-04 2020-03-17 Procédé et appareil d'indication de configuration de transmission pour port dmrs Ceased WO2020199910A1 (fr)

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CN201910270101.3A CN111786754A (zh) 2019-04-04 2019-04-04 一种dmrs端口的传输配置指示方法及装置
CN201910270101.3 2019-04-04

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