Information processing device, communication system, and information processing method

Patent metadata

Field	Value
Publication number	US-11856460-B2
Application number	US-202117560310-A
Country	US
Kind code	B2
Filing date	Dec 23, 2021
Priority date	Jul 11, 2014
Publication date	Dec 26, 2023
Grant date	Dec 26, 2023

Abstract

Reception of a frame is appropriately stopped.
A communication system is a communication system that includes first and second information processing devices. The first information processing device performs control such that a signal (which is a signal having backward compatibility) serving as an index by which the second information processing device receiving a frame stops the reception of the frame is transmitted to the second information processing device. The second information processing device performs control such that the reception of the frame is stopped based on the signal (which is a signal having backward compatibility) serving as an index by which reception of the frame is stopped when the frame transmitted from the first information processing device is received.

First claim

The invention claimed is:

1. An information processing device, comprising:
processing circuitry configured to
perform control to receive an aggregated media access control protocol data unit (A-MPDU) subframe from another information processing device, the A-MPDU subframe having backward compatibility and including address fields;
upon detecting a frame check sequence (FCS) up to a media access control (MAC) header of the A-MPDU subframe, in a case where there is no error in data of the MAC header of the A-MPDU subframe, perform control to stop reception of an A-MPDU including the A-MPDU subframe based on first information of the address fields, which are included in the MAC header of the A-MPDU subframe; and
raise a carrier sense level for channel access in a case where second information of the address fields of the A-MPDU of which the reception is stopped is not for an information processing apparatus to which the information processing device is connected.

2. The information processing device according to the claim 1 , wherein
the processing circuitry is configured to perform control:
to change the carrier sense level from a default value to a first value which is higher than the default value, in a case where the second information of the address fields of the A-MPDU of which the reception is stopped is not for the information processing apparatus to which the information processing device is connected.

3. The information processing device according to the claim 2 , wherein
the processing circuitry is configured to perform control:
after changing the carrier sense level to the first value, to determine whether or not the processing circuitry is during a change period of the carrier sense level, and
to return the carrier sense level to the default value based on a determination that the processing circuitry is not during the change period.

4. The information processing device according to the claim 3 , wherein
the processing circuitry is configured to perform control:
based on the determination that the processing circuitry is during the change period and a frame for which an acknowledgement is required is received during the change period, to transmit the acknowledgement to a transmission source of the frame.

5. The information processing device according to the claim 2 , wherein
the first value is −62 dBm, and
the default value is −82 dBm.

6. The information processing device according to the claim 1 , wherein,
the first information is different from the second information.

7. The information processing device according to the claim 1 , wherein,
the first information is the same as the second information.

8. The information processing device according to the claim 1 , further comprising:
a processor;
an input device;
a display device; and
a first antenna element.

9. The information processing device according to the claim 8 , further comprising:
a speaker;
an external connection interface for coupling a memory card or a universal serial bus (USB) device to the information processing device;
a second antenna elements which is constituting a MIMO antenna with the first antenna; and
a power supply unit which supplies power to the processing circuitry, the processor, the external connection interface, the input device, the display device, the speaker, the first and second antenna elements.

10. The information processing device according to the claim 8 , further comprising:
a content payer reproducing a content stored in an external storage medium and accessed through a storage medium interface.

11. The information processing device according to the claim 8 , wherein, the display device is an LED lump which displays operation status of the information processing device.

12. An information processing method, comprising:
performing control to receive an aggregated media access control protocol data unit (A-MPDU) subframe, by processing circuitry of an information processing device, from another information processing device, the A-MPDU subframe having backward compatibility and including address fields;
upon detecting a frame check sequence (FCS) up to a media access control (MAC) header of the A-MPDU subframe, in a case where there is no error in data of the MAC header of the A-MPDU subframe, performing control to stop reception of an A-MPDU including the A-MPDU subframe based on first information of the address fields, which are included in the MAC header of the A-MPDU subframe: and
raising, by the processing circuitry, a carrier sense level for channel access in a case where second information of the address fields of the A-MPDU of which the reception is stopped is not for an information processing apparatus to which the information processing device is connected.

13. The information processing method according to the claim 12 , further comprising:
performing control to change the carrier sense level from a default value to a first value which is higher than the default value, in a case where the second information of the address fields of the A-MPDU of which the reception is stopped is not for the information processing apparatus to which the information processing device is connected.

14. The information processing method according to the claim 13 , further comprising:
after changing the carrier sense level to the first value, performing control to determine whether or not the processing circuitry is during a change period of the carrier sense level; and
performing control to return the carrier sense level to the default value based on a determination that the processing circuitry is not during the change period.

15. The information processing method according to the claim 14 , further comprising:
based on the determination that the processing circuitry is during the change period and a frame for which an acknowledgement is required is received during the change period, performing control to transmit the acknowledgement to a transmission source of the frame.

16. The information processing method according to the claim 14 , wherein the first value is −62 dBm, and the default value is −82 dBm.

17. The information processing method according to the claim 12 , wherein, the first information is different from the second information.

18. The information processing method according to the claim 12 , wherein, the first information is the same as the second information.

19. A non-transitory computer readable medium including executable instructions, which when executed by a computer cause the computer to execute an information processing method, the method comprising:
performing control to receive an aggregated media access control protocol data unit (A-MPDU) subframe, by processing circuitry of an information processing device, from another information processing device, the A-MPDU subframe having backward compatibility and including address fields;
upon detecting a frame check sequence (FCS) up to a media access control (MAC) header of the A-MPDU subframe, in a case where there is no error in data of the MAC header of the A-MPDU subframe, performing control to stop reception of an A-MPDU including the A-MPDU subframe based on first information of the address fields, which are included in the MAC header of the A-MPDU subframe; and
raising, by the processing circuitry, a carrier sense level for channel access in a case where second information of the address fields of the A-MPDU of which the reception is stopped is not for an information processing apparatus to which the information process

Assignees

• Sony Group Corp

Inventors

• Sakai Eisuke
• Itagaki Takeshi
• Sakoda Kazuyuki
• Yamaura Tomoya

Classifications

• H04W28/12 Primary

  using signalling between network elements · CPC title

• H04L1/0061

  Error detection codes · CPC title

• H04L1/0091 Primary

  arrangements specific to receivers, e.g. format detection (detection of data rate H04L25/0262; detection of coding rate H04L1/0046) · CPC title

• H04W28/04 Primary

  Error control · CPC title

• H04W28/06

  Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} · CPC title