METHODS FOR SENDING AND RECEIVING PHASE TRACKING REFERENCE SIGNAL, AND COMMUNICATION DEVICE

• Main Authors: XU, Minghui, LIU, Fengwei
• Format: Patent
• Language: English; French; German
• Published: 31.05.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION; WIRELESS COMMUNICATIONS NETWORKS

This application discloses a PTRS sending method and receiving method and a communication apparatus. The method includes: a terminal device sends first information to a network device, receives first indication information from the network device, and sends a DFT-s-OFDM symbol to which a PTRS is mapped to the network device, where the first information indicates a number of first PTRS ports, the first indication information is used for determining mapping information of the PTRS on the DFT-s-OFDM symbol, and the mapping information includes at least one of a number of second PTRS ports, a mapping layer of each PTRS port, a number of PTRSs in a PTRS group at a mapping layer, or a number of samples per PTRS group; and a number of PTRS mapping layers is less than or equal to a number of DFT-s-OFDM scheduling layers, the number of PTRS mapping layers is greater than or equal to 1, the number of DFT-s-OFDM scheduling layers is greater than 1, and data is mapped to a location corresponding to a PTRS at a layer to which the PTRS is not mapped at the DFT-s-OFDM scheduling layers. In the method, a rule for mapping the PTRS to a plurality of layers of the DFT-s-OFDM symbol is specified, to ensure phase noise estimation performance and improve a demodulation capability.