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.
Claims13
A chip applied in a wireless local area network (WLAN), wherein the chip is configured to:
- 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 includes values on subcarriers with indexes of −2032:16:2032, and the values on the subcarriers with the indexes of −2032:16:2032 satisfy the following:
- {
- c
- 1
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 2
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- a
- 1
- ,
- c
- 3
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 4
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 5
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 6
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- a
- 2
- ,
- c
- 7
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 8
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- }
- ×
- (
- 1
- +
- j
- )
- /
- 2
- ;
- 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 chip applied in a wireless local area network (WLAN), wherein the chip is 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
- perform automatic gain control (AGC) estimation based on the 320 MHz short training sequence;
- wherein the 320 MHz short training sequence has a periodicity of 0.8 μs and includes values on subcarriers with indexes of −2032:16:2032, and the values on the subcarriers with the indexes of −2032:16:2032 satisfy the following:
- {
- c
- 1
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 2
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- a
- 1
- ,
- c
- 3
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 4
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 5
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 6
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- a
- 2
- ,
- c
- 7
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 8
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- }
- ×
- (
- 1
- +
- j
- )
- /
- 2
- ;
- 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 access point applied in a wireless local area network (WLAN), wherein the access point comprises:
- at least one 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 includes values on subcarriers with indexes of −2032:16:2032, and the values on the subcarriers with the indexes of −2032:16:2032 satisfy the following:
- {
- c
- 1
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 2
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- a
- 1
- ,
- c
- 3
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 4
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 5
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 6
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- a
- 2
- ,
- c
- 7
- ×
- (
- M
- ,
- 1
- ,
- -
- M
- )
- ,
- 0
- ,
- c
- 8
- ×
- (
- -
- M
- ,
- 1
- ,
- -
- M
- )
- }
- ×
- (
- 1
- +
- j
- )
- /
- 2
- ;
- 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.