Wireless communication device and wireless communication method for providing opportunity of fair transmission to terminals

Patent metadata

Field	Value
Publication number	US-10368358-B2
Application number	US-201615267863-A
Country	US
Kind code	B2
Filing date	Sep 16, 2016
Priority date	Oct 30, 2015
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

According to one embodiment, a wireless communication device includes a transmitter configured to transmit a first frame including information to specify a plurality of frequency components; and controlling circuitry configured to determine whether a second frame is received via each of the plurality of frequency components. The transmitter is configured to transmit a third frame including first information concerning a first value range which is used to determine whether to respond to the first frame, the first value range being dependent on a number of frequency components via which the second frame has been received.

First claim

The invention claimed is:

1. A wireless communication device comprising:
a receiver configured to receive a first type of frame including information to specify a plurality of frequency components;
controlling circuitry configured to determine whether a transmission right to respond to the first type of frame is acquired based on a first value selected from a first value range and a number of the frequency components specified in the first type of frame; and
a transmitter configured to transmit, in a case of the transmission right to respond to the first type of frame being acquired, a second type of frame using a frequency component selected from the plurality of frequency components, wherein
the receiver is configured to receive a third type of frame including at least one of a first update value and a second update value for the first value range, the first update value and the second update value depend on a number of wireless communication terminals which have successfully transmitted the second type of frames, the first update value is for a wireless communication terminal in which the transmission of the second type of frame has failed, the second update value is for a wireless communication terminal in which the transmission of the second type of frame has succeeded, and the third type of frame is transmitted upon reception of the second type of frame, and
the controlling circuitry is configured to update the first value range based on the first update value in a case of determining that the transmission of the second type of frame has failed and based on the second update value in a case of determining that the transmission of the second type of frame has succeeded.

2. The wireless communication device according to claim 1 , wherein
the controlling circuitry is configured to determine whether the transmission of the second type of frame has succeeded based on the third type of frame.

3. The wireless communication device according to claim 2 , wherein the controlling circuitry is configured to identify a number of wireless communication terminals which have successfully transmitted the second type of frame based on the third type of frame and adjust the first value range depending on the number of wireless communication terminals.

4. The wireless communication device according to claim 1 , wherein the controlling circuitry is configured to decrease the size of the first range, set a size of the first range to an initial value, or keep the first range in a case of determining that the transmission of the second type of frame has failed.

5. The wireless communication device according to claim 1 , wherein the controlling circuitry is configured to determine, in a case of determining that the transmission of the second type of frame has failed and a subsequent first type of frame has been received, whether a transmission right to respond to the subsequently first type of frame is acquired based on the first value selected for the first type of frame.

6. The wireless communication device according to claim 1 , wherein the controlling circuitry is configured to increase a size of the first range in a case of determining that the transmission of the second type of frame has succeeded.

7. The wireless communication device according to claim 1 , wherein the controlling circuitry is configured to set the first range based on the number of the plurality of frequency components specified in the first type of frame.

8. The wireless communication device according to claim 1 , wherein the controlling circuitry is configured to select the frequency component at random from the plurality of frequency components.

9. The wireless communication device according to claim 1 , wherein the controlling circuitry is configured to select the frequency component depending on the first value, from the plurality of frequency components.

10. The wireless communication device according to claim 1 , wherein
the first type of frame includes information-specifying at least one second frequency component for at least one specific wireless communication terminal and specifying that the plurality of frequency components are permitted to be used by any wireless communication terminal.

11. The wireless communication device according to claim 1 , further comprising at least one antenna.

12. The wireless communication device according to claim 1 , wherein the first type of frame is a trigger frame for random access.

13. A wireless communication method comprising:
receiving a first type of frame including information to specify a plurality of frequency components;
determining whether a transmission right to respond to the first type of frame is acquired based on a first value selected from a first value range and a number of the frequency components specified in the first type of frame;
transmitting, in a case of the transmission right to respond to the first frame being acquired, a second type of frame using a frequency component selected from the plurality of frequency components;
receiving a third type of frame including at least one of a first update value and a second update value for the first value range, wherein the first update value and the second update value depend on a number of wireless communication terminals which have successfully transmitted the second type of frames, the first update value is for a wireless communication terminal in which the transmission of the second type of frames has failed, the second update value is for a wireless communication terminal in which the transmission of the second type of frame has succeeded, and the third type of frame is transmitted upon reception of the second type of frame; and
updating the first value range based on the first update value in a case of determining that the transmission of the second type of frame has failed and based on the second update value in a case of determining that the transmission of the second type of frame has succeeded.

Assignees

• Toshiba Kk

Inventors

• Adachi Tomoko
• Matsuo Ryoko

Classifications

• H04W72/542 Primary

  using measured or perceived quality · CPC title

• H04L5/0033

  each allocating device acting autonomously, i.e. without negotiation with other allocating devices · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L12/413

  with random access, e.g. carrier-sense multiple-access with collision detection [CSMA-CD] · CPC title

• H04L5/0007 Primary

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title