IP Library › Granted Patent US 12696253
Granted Patent B2
US 12696253 · App. 18/554,994 · Granted Jul 28, 2026

Wireless communication device, wireless communication terminal, and wireless communication method for transmitting/receiving a preamble in accordance with a first or second bandwidth narrowing mode

Inventors: Yusuke Tanaka (Tokyo, JP); Hiromasa Uchiyama (Tokyo, JP); Shigeru Sugaya (Tokyo, JP); Ken Tanaka (Tokyo, JP)
Assignee: SONY GROUP CORPORATION
H04W72/0453
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Quick Facts
Patent No.
US 12696253
App. No.
18/554,994
Granted
Jul 28, 2026
Kind
B2
Abstract

A wireless communication device and corresponding method that causes a signal, in which at least a first portion of a preamble and a payload are narrowed in band, to be transmitted.

Claims (76)

1 . A wireless communication device, comprising:

a communication control circuit configured to:

make a determination whether to transmit a first signal in a first transmission and reception mode or in a second transmission and reception mode via a specific frequency band,

wherein in the first transmission and reception mode, the first signal is transmitted based only on first information that is obtained via an exchange with a central control device, or

wherein in the second transmission and reception mode, the first signal is transmitted based on the first information that is obtained from the central control device as well as second information that is received from another wireless communication device,

wherein, in the first transmission and reception mode:

a first portion of a first preamble is concatenated with a first payload to form a first part of the first signal, the first part assigned to a first subband of the specific frequency band,

a second portion of the first preamble of the first signal forms a second part of the first signal, the second part occupying all of the specific frequency band, and

an end of the second part of the first signal is concatenated with a front of the first part of the first signal,

wherein, in the second transmission and reception mode, an entirety of a second preamble of the first signal is concatenated with a second payload of the first signal, the concatenated second preamble and second payload assigned to a second subband of the specific frequency band different from the first subband, and

transmit the first signal based on the determination.

2 . The wireless communication device according to claim 1 , wherein, when the first information indicates that the first signal is to be transmitted in the first transmission and reception mode, the first information further indicates at least one of:

the first subband,

a modulation method and a coding method of the first transmission and reception mode, or

a transmission power setting of the first transmission and reception mode.

3 . The wireless communication device according to claim 2 , wherein the transmission power setting of the first transmission and reception mode is based on a positional relationship between surrounding wireless communication devices.

4 . The wireless communication device according to claim 1 , wherein, when the first information indicates that the first signal is not to be transmitted in the first transmission and reception mode, the communication control circuit determines, based on the second information, whether or not to transmit the first signal in the second transmission and reception mode.

5 . The wireless communication device according to claim 4 , wherein, when the second information indicates that the first signal is permitted to be transmitted in the second transmission and reception mode, the second information further indicates at least one of:

the second subband,

a modulation method and a coding method of the second transmission and reception mode, or

a transmission power setting of the second transmission and reception mode.

6 . The wireless communication device according to claim 5 , wherein the transmission power setting of the second transmission and reception mode is based on a positional relationship between surrounding wireless communication devices.

7 . The wireless communication device according to claim 1 , wherein a format of the concatenated first preamble and first payload is the same as a format of the concatenated second preamble and second payload.

8 . A wireless communication method performed by a wireless communication device, the wireless communication method comprising:

making a determination whether to transmit a first signal in a first transmission and reception mode or in a second transmission and reception mode via a specific frequency band,

wherein in the first transmission and reception mode, the first signal is transmitted based only on first information that is obtained via an exchange with a central control device, or

wherein in the second transmission and reception mode, the first signal is transmitted based on the first information that is obtained from the central control device as well as second information that is received from another wireless communication device,

wherein, in the first transmission and reception mode:

a first portion of a first preamble is concatenated with a first payload to form a first part of the first signal, the first part assigned to a first subband of the specific frequency band,

a second portion of the first preamble of the first signal forms a second part of the first signal, the second part occupying all of the specific frequency band, and

an end of the second part of the first signal is concatenated with a front of the first part of the first signal,

wherein, in the second transmission and reception mode, an entirety of a second preamble of the first signal is concatenated with a second payload of the first signal, the concatenated second preamble and second payload assigned to a second subband of the specific frequency band different from the first subband, and

transmitting the first signal based on the determination.

9 . The wireless communication method according to claim 8 , wherein, when the first information indicates that the first signal is to be transmitted in the first transmission and reception mode, the first information further indicates at least one of:

the first subband,

a modulation method and a coding method of the first transmission and reception mode, or

a transmission power setting of the first transmission and reception mode.

10 . The wireless communication method according to claim 9 , wherein the transmission power setting of the first transmission and reception mode is based on a positional relationship between surrounding wireless communication devices.

11 . The wireless communication method according to claim 8 , wherein, when the first information indicates that the first signal is not to be transmitted in the first transmission and reception mode, the wireless communication method further comprises determining, based on the second information, whether or not to transmit the first signal in the second transmission and reception mode.

12 . The wireless communication method according to claim 11 , wherein, when the second information indicates that the first signal is permitted to be transmitted in the second transmission and reception mode, the second information further indicates at least one of:

the second subband,

a modulation method and a coding method of the second transmission and reception mode, or

a transmission power setting of the second transmission and reception mode.

13 . The wireless communication method according to claim 12 , wherein the transmission power setting of the second transmission and reception mode is based on a positional relationship between surrounding wireless communication devices.

14 . The wireless communication method according to claim 8 , wherein a format of the concatenated first preamble and first payload is the same as a format of the concatenated second preamble and second payload.

15 . A wireless communication terminal, comprising:

a communication control circuit configured to:

exchange information with a central control device;

receive a first portion of a first preamble of a first signal, the first portion forming a first part of the first signal, the first part occupying all of a specific frequency band:

based on the information exchanged with the central control device and the first portion, make a determination whether to receive one of:

a second portion of the first preamble and a corresponding first payload that is concatenated with the second portion so as to form a second part of the first signal that is concatenated with the first part, the second part assigned to a first subband of the specific frequency band, or

a second preamble of the first signal that is concatenated with a corresponding second payload, the concatenated second preamble and second payload assigned to a second subband of the specific frequency band different from the first subband; and

based on the determination, receive one of the second part of the first signal or the concatenated second preamble and second payload.

16 . The wireless communication device according to claim 15 , wherein, when the information exchanged with the central control device and the first portion indicate that the second part of the first signal is to be received, the first portion further indicates at least one of:

the first subband, or

a modulation method and a coding method of the second part of the first signal.

17 . The wireless communication device according to claim 15 , wherein, when the information exchanged with the central control device and the first portion indicate that the concatenated second preamble and second payload is to be received, the first portion further indicates at least one of:

the second subband, or

a modulation method and a coding method of the concatenated second preamble and second payload.

18 . The wireless communication device according to claim 15 , wherein a format of the concatenated first preamble and first payload is the same as a format of the concatenated second preamble and second payload.

19 . A wireless communication method performed by a wireless communication device, the wireless communication method comprising:

exchanging information with a central control device:

receiving a first portion of a first preamble of a first signal, the first portion forming a first part of the first signal, the first part occupying all of a specific frequency band;

based on the information exchanged with the central control device and the first portion, making a determination whether to receive one of:

a second portion of the first preamble and a corresponding first payload that is concatenated with the second portion so as to form a second part of the first signal that is concatenated with the first part, the second part assigned to a first subband of the specific frequency band, or

a second preamble of the first signal that is concatenated with a corresponding second payload, the concatenated second preamble and second payload assigned to a second subband of the specific frequency band different from the first subband; and

based on the determination, receiving one of the second part of the first signal or the concatenated second preamble and second payload.

20 . The wireless communication method according to claim 19 ,

wherein, when the information exchanged with the central control device and the first portion indicate that the second part of the first signal is to be received, the first portion further indicates at least one of:

the first subband, or

a modulation method and a coding method of the second part of the first signal.

21 . The wireless communication method according to claim 19 ,

wherein, when the information exchanged with the central control device and the first portion indicate that the concatenated second preamble and second payload is to be received, the first portion further indicates at least one of:

the second subband, or

a modulation method and a coding method of the concatenated second preamble and second payload.

22 . The wireless communication method according to claim 19 , wherein a format of the concatenated first preamble and first payload is the same as a format of the concatenated second preamble and second payload.