US 12,004,148 B2 · Transmission configuration indication method of DMRS port and related apparatus, and storage medium

Abstract

Disclosed in the present application are a method for transmission configuration indication (TCI) of a DMRS port and a related apparatus, and a storage medium. In the method, a network side device configures at least two DMRS ports for a terminal according to the correspondence between required TCI states and DMRS CDM groups, the at least two DMRS ports belonging to different CDM groups, and the different CDM groups comprising different numbers of DMRS ports; and sends DCI to the terminal, the DCI comprising a DMRS port index value, the DMRS port index value being an index value pre-defined in a DMRS port allocation table, and the DMRS port index value being used for indicating a DMRS port set allocated to the terminal, the number of CDM groups without data, and the number of preamble DMRS symbols, and being used for indicating the correspondence.

Claims20

Dependent claims

A transmission configuration indication method of a demodulation reference signal (DMRS) port, comprising:

configuring, by a network side device, at least two DMRS ports for a terminal according to a required mapping relationship between transmission configuration indication state information (TCI states) and DMRS code division multiplexing (CDM) groups, wherein the at least two DMRS ports belong to different DMRS CDM groups, and the different DMRS CDM groups comprise different quantities of DMRS ports;
and
sending, by the network side device, downlink control information (DCI) to the terminal, wherein the DCI comprises DMRS port index values, the DMRS port index values are index values pre-defined in a DMRS port allocation table, and the DMRS port index values are used to indicate a set of the at least two DMRS ports configured to the terminal, a number of DMRS CDM groups without data, and a number of front-load DMRS symbols, and are used to indicate the mapping relationship between the TCI states and the DMRS CDM groups.

A transmission configuration indication method of a demodulation reference signal (DMRS) port, comprising:

receiving, by a terminal, downlink control information (DCI) sent by a network side device, wherein the DCI comprises DMRS port index values, and the DMRS port index values are index values pre-defined in a DMRS port allocation table;
and
determining, by the terminal, a set of DMRS ports, a number of DMRS code division multiplexing (CDM) groups without data, a number of front-load DMRS symbols and a mapping relationship between transmission configuration indication state information (TCI states) and DMRS CDM groups configured by the network side device to the terminal according to the DMRS port index values and the port allocation table, wherein at least two DMRS ports comprised in the set of DMRS ports belong to different DMRS CDM groups, the different DMRS CDM groups comprise different quantities of DMRS ports, and the at least two DMRS ports are determined by the network side device according to a required mapping relationship between the TCI states and the DMRS CDM groups.

A communication apparatus, comprising:

a processor, a memory and a transceiver;
wherein
the transceiver is controlled by the processor to receive and send information;
the memory stores computer instructions;
and
the processor is configured to read the computer instructions in the memory to:
configure at least two DMRS ports for a terminal according to a required mapping relationship between transmission configuration indication state information (TCI states) and DMRS code division multiplexing (CDM) groups, wherein the at least two DMRS ports belong to different DMRS CDM groups, and the different DMRS CDM groups comprise different quantities of DMRS ports;
and
send downlink control information (DCI) to the terminal, wherein the DCI comprises DMRS port index values, the DMRS port index values are index values pre-defined in a DMRS port allocation table, and the DMRS port index values are used to indicate a set of the at least two DMRS ports configured to the terminal, a number of DMRS CDM groups without data, and a number of front-load DMRS symbols, and are used to indicate the mapping relationship between the TCI states and the DMRS CDM groups.

6 more elements

Dependencies are inferred from the claim text.

Transmission configuration indication method of DMRS port and related apparatus, and storage medium

Life of this patent

Transmission configuration indication method of DMRS port and related apparatus, and storage medium

Life of this patent

Abstract

Claims20