Precoding matrix indication method and apparatus
AssigneeBeijing Xiaomi Mobile Software Co., Ltd.
InventorsZhenyu ZHANG, Xueyuan GAO
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Abstract
A precoding matrix indication method for use in a wireless communication network includes: sending, according to pre-configuration information, precoding matrix indication information to a user equipment (UE) having N antenna ports and performing multiple-input multiple-output (MIMO) uplink transmission, where N is a positive even number; in which the pre-configuration information includes a plurality of codewords determined according to a first codeword set that is used for fully-coherent transmission or partially-coherent transmission and corresponds to each layer from N/2 antenna ports and 1 layer to N/2 antenna ports and N/2 layers corresponding to the MIMO uplink transmission.
Claims29
A precoding matrix indication method, performed by a network device, comprising:
- sending, according to pre-configuration information, precoding matrix indication information to a user equipment (UE) having N antenna ports and performing multiple-input multiple-output (MIMO) uplink transmission, where N is a positive even number;
- wherein the pre-configuration information comprises a plurality of codewords determined according to a first codeword set that is used for fully-coherent transmission or partially-coherent transmission and corresponds to each layer from N/2 antenna ports and 1 layer to N/2 antenna ports and N/2 layers corresponding to the MIMO uplink transmission.
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12-13. (canceled)
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A precoding matrix determination method, performed by a user equipment (UE) having N antenna ports and performing multiple-input multiple-output (MIMO) uplink transmission, wherein N is a positive even number, and the method comprises:
- receiving precoding matrix indication information from a network device;
- determining a partially-coherent codeword according to pre-configuration information and the precoding matrix indication information;
- wherein the pre-configuration information comprises a plurality of codewords determined according to a first codeword set that is used for fully-coherent transmission or partially-coherent transmission and corresponds to each layer from N/2 antenna ports and 1 layer to N/2 antenna ports and N/2 layers corresponding to the MIMO uplink transmission.
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22-25. (canceled)
31-32. (canceled)
A communication device, comprising:
- a transceiver, a memory, and a processor connected to the transceiver and the memory, respectively, wherein the processor is configured to:
- send, according to pre-configuration information, precoding matrix indication information to a user equipment (UE) having N antenna ports and performing multiple-input multiple-output (MIMO) uplink transmission, where N is a positive even number;
- wherein the pre-configuration information comprises a plurality of codewords determined according to a first codeword set that is used for fully-coherent transmission or partially-coherent transmission and corresponds to each layer from N/2 antenna ports and 1 layer to N/2 antenna ports and N/2 layers corresponding to the MIMO uplink transmission.
34-35. (canceled)
Dependencies are inferred from the claim text.