Granted Patent B2

US 12,739,158 · App. 18/918,934 · Granted Sep 15, 2026

Inventors: Lei Huang (Singapore, SG); Yoshio Urabe (Nara, JP); Yanyi Ding (Singapore, SG); Rojan Chitrakar (Singapore, SG)

Assignee: Panasonic Intellectual Property Corporation of America

H04L27/2602H04B7/0452H04L25/0204

Abstract

Claims (44)

1 . An integrated circuit, which comprises circuitry configured to:

generate a signal comprising one or more non-legacy long training field (LTF) symbols, each of the one or more non-legacy LTF symbols comprising a plurality of data tones and a plurality of pilot tones;

map a non-legacy LTF sequence to the plurality of data tones and the plurality of pilot tones;

group the plurality of data tones with nonzero non-legacy LTF sequence values into a first tone group and a second tone group; and

transmit the generated signal, wherein the circuitry is configured to generate the signal such that the signal comprises information on a number N STS of space-time streams, wherein a total number of the one or more non-legacy LTF symbols is ┌N STS /2┐ when the N STS is 2, 3, 4, 7, 8, 11, 12, 15 or 16; and ┌N STS /2┐+1 when the N STS is 5, 6, 9, 10, 13 or 14.

2 . The integrated circuit according to claim 1 , comprising:

at least one input coupled to the circuitry, wherein the at least one input, in operation, inputs data; and

at least one output coupled to the circuitry, wherein the at least one output, in operation, outputs data to be transmitted.

3 . The integrated circuit according to claim 1 , wherein the circuitry comprises:

processing circuitry, which, in operation, controls the generating, the mapping and the grouping; and

transmission circuitry, which, in operation, controls the transmitting of the generated signal.

4 . The integrated circuit according to claim 1 , wherein the circuitry, in operation:

groups two or more space-time streams into a first stream group and a second stream group;

applies a P 1 matrix to multiplex one or more space-time streams in the first stream group to data tones in the first tone group for each of the one or more non-legacy LTF symbols; and

applies a P 2 matrix to multiplex one or more space-time streams in the second stream group to data tones in the second tone group for each of the one or more non-legacy LTF symbols.

5 . The integrated circuit according to claim 4 , wherein the P 1 matrix is P 2×2 , P 4×4 , P 6×6 or P 8×8 when a total number of the one or more non-legacy LTF symbols is 2, 4, 6 or 8 respectively, and wherein the P 2 matrix is a permutation of the P 1 matrix.

6 . The integrated circuit according to claim 5 , wherein the first stream group comprises one or more odd indexed space-time streams among the two or more space-time streams; while the second stream group comprises one or more even indexed space-time streams among the two or more space-time streams.

7 . The integrated circuit according to claim 1 , wherein the circuitry, in operation, generates the signal such that the signal comprises information on a number of space-time streams used for channel sounding, wherein the signal is a sounding null data packet (NDP).

8 . The integrated circuit according to claim 1 , wherein the circuitry, in operation, generates the signal such that the signal comprises information on a number of space-time streams used for transmission of a physical layer service data unit (PSDU), wherein the signal is a single-user (SU) physical layer protocol data unit (PPDU).

9 . The integrated circuit according to claim 1 , wherein the circuitry, in operation, generates the signal such that the signal comprises information on a number of the one or more non-legacy LTF symbols, and a number of space-time streams and starting space-time stream number used for transmission of a PSDU of each intended STA, and wherein the signal is a multi-user (MU) PPDU.

10 . The integrated circuit according to claim 1 , wherein the circuitry comprises receiving circuitry, which, in operation, receives a trigger frame for soliciting a transmission of the signal, wherein the trigger frame comprises information on a number of the one or more non-legacy LTF symbols, and a number of space-time streams and starting space-time stream number used for transmission of a PSDU of the communication apparatus, and wherein the signal is a trigger-based (TB) PPDU or a joint transmission (JT) PPDU.

11 . The integrated circuit according to claim 1 , wherein the circuitry, in operation, groups the plurality of data tones such that the first tone group comprises every second data tones with nonzero non-legacy LTF sequence values starting with a first data tone with nonzero non-legacy LTF sequence value, and the second tone group comprises every second data tones with nonzero non-legacy LTF sequence values starting with a second data tone with nonzero non-legacy LTF sequence value.

12 . An integrated circuit, which comprises circuitry configured to:

generate a signal comprising one or more non-legacy long training field (LTF) symbols, each of the one or more non-legacy LTF symbols comprising a plurality of data tones and a plurality of pilot tones;

map a non-legacy LTF sequence to the plurality of data tones and the plurality of pilot tones;

group the plurality of data tones with nonzero non-legacy LTF sequence values into a first tone group and a second tone group; and

transmit the generated signal, wherein the circuitry is configured to generate the signal such that the signal comprises information on a number N STS of space-time streams, wherein a total number of the one or more non-legacy LTF symbols is [N STS +1] when the N STS is 3, 5, or 7; N STS when N STS is 2, 4, 6 or 8; and 8 when 9≤N STS ≤16.

13 . The integrated circuit according to claim 12 , comprising:

at least one input coupled to the circuitry, wherein the at least one input, in operation, inputs data; and

at least one output coupled to the circuitry, wherein the at least one output, in operation, outputs data to be transmitted.

14 . The integrated circuit according to claim 12 , wherein the circuitry comprises:

processing circuitry, which, in operation, controls the generating, the mapping and the grouping; and

transmission circuitry, which, in operation, controls the transmitting of the generated signal.

15 . An integrated circuit, which comprises circuitry configured to:

generate a signal comprising one or more non-legacy long training field (LTF) symbols, each of the one or more non-legacy LTF symbols comprising a plurality of data tones and a plurality of pilot tones;

map a non-legacy LTF sequence to the plurality of data tones and the plurality of pilot tones;

group the plurality of data tones with nonzero non-legacy LTF sequence values into a first tone group and a second tone group; and

transmit the generated signal, wherein the circuitry is configured to generate the signal such that the signal comprises information on a number N STS of space-time streams, wherein a total number of the one or more non-legacy LTF symbols is [N STS +1] when the N STS is 3, 5, or 7; N STS when N STS is 2, 4, 6 or 8; 6 when 9≤N STS ≤12; and 8 when 13≤N STS ≤16.

16 . The integrated circuit according to claim 15 , comprising:

at least one input coupled to the circuitry, wherein the at least one input, in operation, inputs data; and

at least one output coupled to the circuitry, wherein the at least one output, in operation, outputs data to be transmitted.

17 . The integrated circuit according to claim 15 , wherein the circuitry comprises:

processing circuitry, which, in operation, controls the generating, the mapping and the grouping; and

transmission circuitry, which, in operation, controls the transmitting of the generated signal.

Priority Claims (1)

Continuity (2)

References Cited (13)