Transmission apparatus and transmission method, reception apparatus and reception method, and communication system

Patent metadata

Field	Value
Publication number	US-11218973-B2
Application number	US-201916964600-A
Country	US
Kind code	B2
Filing date	Jan 18, 2019
Priority date	Jan 31, 2018
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

The present disclosure relates to a transmission apparatus and a transmission method, a reception apparatus and a reception method, and a communication system that make it possible to implement stabilized communication irrespective of a fluctuation of a communication environment in a WLAN (Wireless LAN, WaveLAN).
When a transmission apparatus transmits a data signal to a reception apparatus, the reception apparatus returns a response signal including a feedback parameter (FP) to the transmission apparatus. In a case where a reception situation of the reception apparatus is poor and improvement of it is necessitated on the basis of the FP, the transmission apparatus adjusts transmission power or the like to improve the reception situation of the reception apparatus. The present disclosure can be applied to a communication system in a WLAN.

First claim

The invention claimed is:

1. A transmission apparatus comprising:
circuitry configured to implement
a transmission section configured to transmit a data signal to a reception apparatus;
a reception section configured to receive a response signal from the reception apparatus by which the data signal is received simultaneously when the data signal is transmitted; and
a control section configured to adjust a transmission parameter for controlling the transmission of the transmission section on a basis of the response signal, wherein

the transmission section is controlled with the transmission parameter adjusted by the control section to transmit a break flag followed by the data signal to the reception apparatus, and
the transmission parameter comprises a modulation method.

2. The transmission apparatus according to claim 1 , wherein
the control section decides on the basis of the response signal whether or not it is necessary to adjust the transmission parameter and adjusts the transmission parameter for controlling the transmission of the transmission section.

3. The transmission apparatus according to claim 2 , wherein
the control section decides on a basis of reception information included in the response signal whether or not it is necessary to adjust the transmission parameter.

4. The transmission apparatus according to claim 3 , wherein
in a case where the response signal is a response signal destined for the transmission apparatus, the control section adjusts the transmission parameter on the basis of the reception information included in the response signal so as to improve a reception situation of the reception apparatus.

5. The transmission apparatus according to claim 3 , wherein
in a case where the response signal is a response signal destined for a transmission apparatus of another network, the control section adjusts the transmission parameter on the basis of the reception information included in the response signal so as to suppress an influence by interference with the reception apparatus.

6. The transmission apparatus according to claim 2 , wherein
the control section decides, on a basis of a notification included in the response signal and indicative of whether or not there is an interruption of a reception operation by the reception apparatus, whether or not it is necessary to adjust the transmission parameter and adjusts the transmission parameter for controlling the transmission of the transmission section.

7. The transmission apparatus according to claim 1 , wherein
when the transmission section is controlled with the transmission parameter adjusted by the control section to transmit the data signal to the reception apparatus, the transmission section re-transmits the data signal beginning with a top of the data signal.

8. The transmission apparatus according to claim 7 , wherein
in the case where the transmission section is controlled with the transmission parameter adjusted by the control section to transmit the data signal to the reception apparatus, the transmission section first interrupts transmission of the data signal being transmitted to the reception apparatus and then re-transmits the data signal beginning with the top of the data signal.

9. The transmission apparatus according to claim 8 , wherein
in the case where the transmission section interrupts the transmission of the data signal being transmitted to the reception apparatus, the transmission section notifies the reception apparatus in advance that the transmission of the data signal being transmitted is to be interrupted.

10. A transmission method comprising:
a transmission process of transmitting a data signal to a reception apparatus;
a reception process of receiving a response signal from the reception apparatus by which the data signal is received simultaneously when the data signal is transmitted; and
a control process of adjusting a transmission parameter for controlling the transmission of the transmission process on a basis of the response signal, wherein
the transmission process is controlled with the transmission parameter adjusted by the control process to transmit a break flag followed by the data signal to the reception apparatus, and
the transmission parameter comprises a modulation method.

11. A reception apparatus comprising:
circuitry configured to implement
a reception section configured to receive a data signal transmitted from a transmission apparatus; and
a transmission section configured to transmit a response signal to the reception of the data signal by the reception section simultaneously when the data signal is received, wherein

the reception section receives a break flag followed by the data signal whose transmission is controlled with a transmission parameter adjusted on a basis of the response signal by the transmission apparatus, and
the transmission parameter comprises a modulation method.

12. The reception apparatus according to claim 11 , wherein
the transmission section places, into the response signal to the reception of the data signal by the reception section, reception information when the data signal is received by the reception section and transmits the resulting response signal simultaneously when the data signal is received, and
the reception section receives, from the transmission apparatus, the data signal whose transmission is controlled with a transmission parameter adjusted on a basis of the reception information included in the response signal.

13. The reception apparatus according to claim 12 , wherein
the transmission section transmits the response signal including information relating to any one of reception quality or interference power as the reception information.

14. The reception apparatus according to claim 11 , wherein
the reception section causes a reception operation of the data signal to be interrupted and causes a top portion of the data signal that is transmitted newly to be searched for.

15. The reception apparatus according to claim 14 , wherein
the reception section causes the reception operation of the data signal to be interrupted and causes the top portion of the data signal that is transmitted newly to be searched for on a basis of a notification of interruption of a transmission operation of the data signal from the transmission apparatus.

16. The reception apparatus according to claim 14 , wherein
the reception section causes the reception operation of the data signal to be interrupted and causes the top portion of the data signal that is transmitted newly to be searched for on a basis of a reception situation of the data signal.

17. The reception apparatus according to claim 16 , wherein
the transmission section transmits a response signal that includes, as reception information, information indicative of whether or not there is an interruption of the reception operation of the data signal to the transmission apparatus.

18. The reception apparatus according to claim 11 , wherein
the transmission section transmits the response signal to the reception of the data signal by the reception section simultaneously when the data signal is received and transmits the response signal periodically.

19. A reception method comprising:
a reception process of receiving a data signal transmitted from a transmission apparatus; and
a transmission process of transmitting a response signal to the reception of the data signal by the reception process simultaneously when the data signal is received, wherein
the reception process receives a bre

Assignees

• Sony Corp

Inventors

• Aio Kosuke
• Tanaka Yusuke
• Hirata Ryuichi

Classifications

• H04W52/143 Primary

  Downlink power control · CPC title

• H04L1/16

  in which the return channel carries supervisory signals, e.g. repetition request signals · CPC title

• H04W52/24

  using SIR [Signal to Interference Ratio] or other wireless path parameters · CPC title

• H04L1/1614

  using bitmaps · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title