Patent ID: 11968140
Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. The method according to claim 10, wherein the determining, by the network side device, the code word transmission mode corresponding to the downlink transmission data according to the quantity of transmission layers of the PDSCH comprises:
determining, by the network side device, the code word transmission mode corresponding to the downlink transmission data is single code word transmission when the quantity of the transmission layers of the PDSCH is determined to be any one of 2 to 4; and
determining, by the network side device, the code word transmission mode corresponding to the downlink transmission data is double code word transmission when the quantity of the transmission layers of the PDSCH is determined to be any one of 5 to 8;
wherein after determining, by the network side device, the code word transmission mode corresponding to the downlink transmission data according to the quantity of the DMRS port groups occupied by the downlink transmission data, the method further comprises:
transferring, by the network side device, the code word transmission mode to the terminal in a signaling or an implicit manner, for instructing the terminal to demodulate data according to the code word transmission mode;
wherein before determining, by the network side device, the quantity of the DMRS port groups occupied by the downlink transmission data sent to the terminal, the method further comprises:
determining, by the network side device, that the quantity of the transmission layers of the PDSCH is greater than 1;
wherein DMRS ports in each of the DMRS port groups have a Quasi Co-Location (QCL) relationship.