Cyclic shift diversity-based communication method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsBo Gong, Chenchen Liu, Ming Gan
Life of this patent
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Abstract
A cyclic shift diversity-based communication method and apparatus. A maximum number of antennas supported in this method is greater than 8. A cyclic shift is performed on a first preamble part of each antenna by using a cyclic shift diversity value, so that an automatic gain control error is reduced in response to the use of more antennas (for example, 16 antennas).
Claims18
A cyclic shift diversity-based communication method, wherein a maximum number of antennas supported in the method is M, M is a positive integer greater than 8, and the method comprises:
- generating a physical layer protocol data unit (PPDU), wherein the PPDU includes a first preamble part;
- and
- sending the PPDU by using N antennas, wherein cyclic shift is performed on the first preamble part of the PPDU using a cyclic shift diversity (CSD) set based on a number of the N antennas to obtain the first preamble part obtained after the cyclic shift, the PPDU being sent on an ith antenna of the N antennas, wherein a CSD value corresponds to the N antennas, and N is a positive integer less than or equal to M.
A communication apparatus, applied for a cyclic shift diversity-based communication, wherein a maximum number of antennas supported in the cyclic shift diversity-based communication is M, M is a positive integer greater than 8, the communication apparatus comprising:
- at least one processor;
- and
- one or more memories coupled to the at least one processor and storing instructions, wherein the at least one processor is configured to execute the instructions to perform operations including:
- generating a physical layer protocol data unit (PPDU), wherein the PPDU includes a first preamble part;
- and
- sending the PPDU by using N antennas, wherein cyclic shift is performed on the first preamble part of a PPDU using a cyclic shift diversity (CSD) set based on a number of the N antennas to obtain the first preamble part obtained after the cyclic shift, the PPDU being sent on an ith antenna of the N antennas, wherein a CSD value corresponds to the N antennas, and N is a positive integer less than or equal to M.
A communication apparatus, applied for a cyclic shift diversity-based communication, the communication apparatus comprising:
- at least one processor;
- and
- one or more memories coupled to the at least one processor and storing instructions, wherein the at least one processor is configured to execute the instructions to perform operations including:
- receiving a physical layer protocol data unit (PPDU), wherein cyclic shift is performed on a first preamble part of the PPDU using a cyclic shift diversity (CSD) set based on a number of N antennas, the first preamble part is received by the N antennas, wherein a CSD value corresponds to the N antennas, and the CSD value is based on which a transmit end sends the first preamble part, N being a positive integer;
- and
- processing the PPDU.
Dependencies are inferred from the claim text.