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US 2021/0351897 A1Published application
Signal sending method, signal receiving method, and device
AssigneeHuawei Technologies Co., Ltd.
InventorsMingxin GONG, Bingyu QU, Yongxing ZHOU
Life of this patent
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Abstract
A signal sending method, a signal receiving method, and a device are provided. A part that is of a first signal and that is carried on the kth subcarrier in the ith subcarrier group in N subcarrier groups is xi,nid(k), and a sequence {si,nid(k)} related to xi,nid(k) is one of enumerated sequences. The enumerated sequences are sequences with relatively good cross-correlation. Therefore, for two subcarrier groups, provided that selected {si,nid(k)} is two of the enumerated sequences, cross-correlation between signals carried in the two subcarrier groups can be ensured to be relatively good, thereby reducing interference between the signals and improving channel estimation performance.
Claims20
A signal sending method, comprising:
- determining a time-frequency resource, wherein the time-frequency resource comprises N subcarrier groups, the ith subcarrier group in the N subcarrier groups comprises Ki subcarriers, the Ki subcarriers are evenly spaced, N is a positive integer greater than or equal to 1, and Ki is an integer greater than 1;
- and
- sending a first signal on the N subcarrier groups, wherein a part that is of the first signal and that is carried in the ith subcarrier group in the N subcarrier groups is a first segment of a sequence {zq(m)};
- a length of the sequence {zq(m)} is M;
- the sequence meets zq(m)=yq(m mod Mzc), wherein m=0,1,2, . . . ,M−1, M is an integer greater than 1, Mzc is a maximum prime number that meets Mzc<M, or Mzc is a minimum prime number that meets Mzc>M;
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- wherein A is a non-zero complex constant, t=0, 1, 2, . . . , Mzc−1, j=√{square root over (−1)}, α is a real number, q is determined based on an identifier of the first signal or a cell identifier, and q=└q+1/2┘, wherein q=Mzc▪(nid+1)/p, nid ∈ {0,1,2, . . . ,p −2}, p is a prime number greater than 2, and nid is determined based on the identifier of the first signal or the cell identifier.
52 more elements
A signal receiving method, comprising:
- receiving a first signal carried on N subcarriers, and obtaining a sequence that is carried by the first signal and that is in the ith subcarrier group in the N subcarrier groups, wherein the sequence is a first segment of a sequence {zq(m)};
- a length of the sequence {zq(m)} is M;
- the sequence meets zq(m)=yq(m mod Mzc), wherein m=0,1,2, . . . ,M−1, M is an integer greater than 1, Mzc is a maximum prime number that meets Mzc<M, or Mzc is a minimum prime number that meets Mzc>M;
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- wherein A is a non-zero complex constant, t=0, 1, 2, . . . , Mzc−1, j=√{square root over (−1)}, α is a real number, q is determined based on an identifier of the first signal or a cell identifier, and q=└q+1/2┘, wherein q=Mzc▪(nid+1)/p, nid ∈ {0,1,2, . . . ,p −2}, p is a prime number greater than 2, and nid is determined based on the identifier of the first signal or the cell identifier;
- and
- processing the first signal.
51 more elements
A communication apparatus, comprising a processor and a transceiver, wherein the processor is coupled to the transceiver:
- the processor , configured to determine a time-frequency resource, wherein the time-frequency resource comprises N subcarrier groups, the ith subcarrier group in the N subcarrier groups comprises Ki subcarriers, the Ki subcarriers are evenly spaced, N is a positive integer greater than or equal to 1, and Ki is an integer greater than 1;
- and
- the transceiver, configured to send a first signal on the N subcarrier groups, wherein a part that is of the first signal and that is carried in the ith subcarrier group in the N subcarrier groups is a first segment of a sequence {zq(m)};
- a length of the sequence {zq(m)} is M;
- the sequence meets zq(m)=yq(m mod Mzc), wherein m=0,1,2, . . . ,M−1, M is an integer greater than 1, Mzc is a maximum prime number that meets Mzc<M, or Mzc is a minimum prime number that meets Mzc>M;
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- wherein A is a non-zero complex constant, t=0, 1, 2, . . . , Mzc−1, j=√{square root over (−1)}, α is a real number, q is determined based on an identifier of the first signal or a cell identifier, and q=└q+1/2┘, wherein q=Mzc▪(nid+1)/p , nid ∈ {0,1,2, . . . ,p−2}, p is a prime number greater than 2, and nid is determined based on the identifier of the first signal or the cell identifier.
52 more elements
A communication apparatus, comprising a processor and a transceiver, wherein the processor is coupled to the transceiver:
- the transceiver, configured to receive a first signal carried on N subcarriers, and obtaining a sequence that is carried by the first signal and that is in the ith subcarrier group in the N subcarrier groups, wherein the sequence is a first segment of a sequence {zq(m)};
- a length of the sequence {zq(m)} is M;
- the sequence meets zq(m)=yq(m mod Mzc), wherein m=0,1,2, . . . , M−1, M is an integer greater than 1, Mzc is a maximum prime number that meets Mzc<M, or Mzc is a minimum prime number that meets
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- wherein A is a non-zero complex constant, t=0, 1, 2, . . . , Mzc−1, j=√{square root over (−1)}, α is a real number, q is determined based on an identifier of the first signal or a cell identifier, and q=└q+1/2┘, wherein q=Mzc▪(nid+1)/p, nid ∈ {0,1,2, . . . ,p−2}, p is a prime number greater than 2, and nid is determined based on the identifier of the first signal or the cell identifier;
- the processor, configured to process the first signal.
65 more elements
Dependencies are inferred from the claim text.