Short training sequence design method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsXin Zuo, Ming Gan, Dandan Liang
Life of this patent
Estimating the term…
Abstract
The application provides a short training sequence design method and apparatus. The method includes: determining a short training sequence, where the short training sequence may be obtained based on an existing sequence, and the short training sequence with comparatively good performance may be obtained through simulation calculation, for example, by adjusting a parameter, and sending a short training field on a target channel, where the short training field is obtained by performing inverse fast Fourier transformation IFFT on the short training sequence, and a bandwidth of the target channel is greater than 160 MHz.
Claims18
An apparatus applied in wireless local area network (WLAN), the apparatus comprising:
- a processor, configured to determine a short training sequence;
- and
- a transceiver, configured to send the short training sequence on a channel, wherein a bandwidth of the channel is 320 MHz;
- wherein the short training sequence has a periodicity of 0.8 μs and satisfies the following:
- S−2032:16:2032={c1×(M, 1, −M), 0, c2×(−M, 1, −M), a1, c3×(M, 1, −M), 0, c4×(−M, 1, −M), 0, c5×(M, 1, −M), 0, c6×(−M, 1, −M), a2, c7×(M, 1, −M), 0, c8×(−M, 1, −M)}×(1+j)/√{square root over (2)}, wherein −2032:16:2032 refers to a tone subscript and is −2032, −2016, −2000, . . . , −16, 0, 16, . . . , 2000, 2016, 2032, and a value of other tones is 0;
- and
- wherein a value of ai is any one of {−1, 0, 1}, i=1, 2, a value of cj is any one of {−1, 1}, j=1, 2, 3, 4, 5, 6, 7, 8, and M={−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}.
An apparatus applied in wireless local area network (WLAN), the apparatus comprising:
- a transceiver, configured to receive a part or all of a 320 MHz short training sequence on a channel, wherein a bandwidth of the channel is 320 MHz;
- and
- a processor, configured to perform automatic gain control (AGC) estimation based on the short training sequence;
- wherein the 320 MHz short training sequence has a periodicity of 0.8 μs and satisfies the following:
- S−2032:16:2032={c1×(M, 1, −M), 0, c2×(−M, 1, −M), a1, c3×(M, 1, −M), 0,c4×(—M, 1, −M), 0, c5×(M, 1, −M), 0, c6×(−M, 1, −M), a2, c7×(M, 1, −M), 0, c8×(−M, 1, −M)}×(1+j)/√{square root over (2)}, wherein −2032:16:2032 refers to a tone subscript and is −2032, −2016, −2000, . . . , −16, 0, 16, . . . , 2000, 2016, 2032, and a value of other tones is 0;
- and
- wherein a value of ai is any one of {−1, 0, 1}, i=1, 2, a value of cj is any one of {−1, 1}, j=1, 2, 3, 4, 5, 6, 7, 8, and M={−1,−1,−1,1,1,1,−1,1,1,1,−1,1,1,−1,1}.
A method applied in wireless local area network (WLAN), the method comprising:
- determining, by a first apparatus, a short training sequence;
- and
- sending, by the first apparatus, the short training sequence on a channel, wherein a bandwidth of the channel is 320 MHz;
- wherein the short training sequence has a periodicity of 0.8 μs and satisfies the following:
- S−2032:16:2032={c1×(M, 1, −M), 0, c2×(−M, 1, −M), a1, c3×(M, 1, −M), 0,c4×(—M, 1, −M), 0, c5×(M, 1, −M), 0, c6×(−M, 1, −M), a2, c7×(M, 1, −M), 0, c8×(−M, 1, −M)}×(1+j)/√{square root over (2)}, wherein −2032:16:2032 refers to a tone subscript and is −2032, −2016, −2000, . . . , −16, 0, 16, . . . , 2000, 2016, 2032, and a value of other tones is 0;
- and
- wherein a value of ai is any one of {−1, 0, 1}, i=1, 2, a value of cj is any one of {−1, 1}, j=1, 2, 3, 4, 5, 6, 7, 8, and M={−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}.
A method applied in wireless local area network (WLAN), the method comprising:
- receiving, by a second apparatus, a part or all of a 320 MHz short training sequence on a channel, wherein a bandwidth of the channel is 320 MHz;
- and
- performing, by the second apparatus, automatic gain control (AGC) estimation based on the short training sequence;
- wherein the 320 MHz short training sequence has a periodicity of 0.8 μs and satisfies the following:
- S−2032:16:2032={c1×(M, 1, −M), 0, c2×(−M, 1, −M), a1, c3×(M, 1, −M), 0,c4×(—M, 1, −M), 0, c5×(M, 1, −M), 0, c6×(−M, 1, −M), a2, c7×(M, 1, −M), 0, c8×(−M, 1, −M)}×(1+j)/√{square root over (2)}, wherein −2032:16:2032 refers to a tone subscript and is −2032, −2016, −2000, . . . , −16, 0, 16, . . . , 2000, 2016, 2032, and a value of other tones is 0;
- and
- wherein a value of ai is any one of {−1, 0, 1}, i=1, 2, a value of cj is any one of {−1, 1}, j=1, 2, 3, 4, 5, 6, 7, 8, and M={−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}.
A non-transitory computer-readable media storing computer instructions, that when executed by one or more processors, cause the one or more processors to perform the steps of:
- determine a short training sequence;
- and
- send the short training sequence on a channel, wherein a bandwidth of the channel is 320 MHz;
- wherein the short training sequence has a periodicity of 0.8 μs and satisfies the following:
- S−2032:16:2032={c1×(M, 1, −M), 0, c2×(−M, 1, −M), a1, c3×(M, 1, −M), 0,c4×(—M, 1, −M), 0, c5×(M, 1, −M), 0, c6×(−M, 1, −M), a2, c7×(M, 1, −M), 0, c8×(−M, 1, −M)}×(1+j)/√{square root over (2)}, wherein −2032:16:2032 refers to a tone subscript and is −2032, −2016, −2000, . . . , −16, 0, 16, . . . , 2000, 2016, 2032, and a value of other tones is 0;
- and
- wherein a value of ai is any one of {−1, 0, 1}, i=1, 2, a value of cj is any one of {−1, 1}, j=1, 2, 3, 4, 5, 6, 7, 8, and M={−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}.
A non-transitory computer-readable media storing computer instructions, that when executed by one or more processors, cause the one or more processors to perform the steps of:
- receive a part or all of a 320 MHz short training sequence on a channel, wherein a bandwidth of the channel is 320 MHz;
- and
- perform automatic gain control (AGC) estimation based on the short training sequence;
- wherein the 320 MHz short training sequence has a periodicity of 0.8 μs and satisfies the following:
- S−2032:16:2032={c1×(M, 1, −M), 0, c2×(−M, 1, −M), a1, c3×(M, 1, −M), 0,c4×(—M, 1, −M), 0, c5×(M, 1, −M), 0, c6×(−M, 1, −M), a2, c7×(M, 1, −M), 0, c8×(−M, 1, −M)}×(1+j)/√{square root over (2)}, wherein −2032:16:2032 refers to a tone subscript and is −2032, −2016, −2000, . . . , −16, 0, 16, . . . , 2000, 2016, 2032, and a value of other tones is 0;
- and
- wherein a value of ai is any one of {−1, 0, 1}, i=1, 2, a value of cj is any one of {−1, 1}, j=1, 2, 3, 4, 5, 6, 7, 8, and M={−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}.
Dependencies are inferred from the claim text.