Method and apparatus for interference aware communications

Patent metadata

Field	Value
Publication number	US-2016135142-A1
Application number	US-201514930560-A
Country	US
Kind code	A1
Filing date	Nov 2, 2015
Priority date	Nov 3, 2014
Publication date	May 12, 2016
Grant date	—

Abstract

A method for interference aware communications of devices in a wireless local area network is provided. The device selects a transmission channel of a frame among a plurality of sub-channels, generates interference aware information based on an interference condition of the plurality of sub-channels, inserts the interference aware information into the frame, and transmits the frame in the selected transmission channel.

First claim

What is claimed is:

1 . A method for interference aware communications by a device in a wireless local area network, the method comprising:
selecting a transmission channel of a frame among a plurality of sub-channels; generating interference aware information based on an interference condition of the plurality of sub-channels; inserting the interference aware information into the frame; and transmitting the frame in the selected transmission channel.

2 . The method of claim 1 , wherein the interference aware information includes at least one sub-channel for response frame transmission of the frame.

3 . The method of claim 2 , further comprising:
receiving a response frame of the frame in the sub-channel included in the interference aware information.

4 . The method of claim 1 , wherein the generating of the interference aware information includes:
selecting at least one sub-channel for response frame transmission among the plurality of sub-channels, based on the interference condition of the plurality of sub-channels; and generating the interference aware information including the selected at least one sub-channel.

5 . The method of claim 4 , wherein the selecting of the at least one sub-channel includes
selecting a different sub-channel from the transmission channel among the plurality of sub-channels, when an interference level of the transmission channel is higher than a reference.

6 . The method of claim 1 , wherein the generating of the interference aware information includes
generating the interference aware information including an indicator for dynamic channel access supporting, when an interference level of the transmission channel is higher than a reference.

7 . The method of claim 6 , wherein the interference aware information further includes at least one sub-channel with interference below a reference among the plurality of sub-channels.

8 . The method of claim 1 , wherein
the interference aware information is included in an interference aware information field of the frame, and the interference aware information field includes at least one of a first field indicating at least one sub-channel, a second field indicating an interference aware mode, and a third field indicating a response frame transmission delay.

9 . The method of claim 8 , wherein the interference aware information field is included in a signal field of the frame.

10 . A method for interference aware communications by a device in a wireless local area network, the method comprising:
receiving a data frame including interference aware information; generating a NACK frame requesting data retransmission based on the interference aware information, upon failing in decoding of the data frame; and transmitting the NACK frame to a transmit device of the data frame, wherein the interference aware information includes at least one of information indicating a dynamic channel access supporting and idle sub-channel information of the transmit device.

11 . The method of claim 10 , wherein the generating of the NACK frame includes:
selecting at least one sub-channel for data retransmission among a plurality of sub-channels, based on an interference condition of the plurality of sub-channels; and inserting the selected at least one sub-channel into the NACK frame.

12 . The method of claim 11 , further comprising:
receiving the data frame retransmitted in the at least one sub-channel included in the NACK frame.

13 . The method of claim 10 , wherein the NACK frame is transmitted to an idle sub-channel included in the interference aware information.

14 . The method of claim 10 , wherein the NACK frame includes at least one of a first field indicating the NACK frame and a second field indicating a recommended sub-channel for data retransmission.

15 . A method for interference aware communications by a device in a wireless local area network, the method comprising:
selecting frame transmission channels for each of the plurality of receive devices among a plurality of sub-channels; determining a response frame recommendation channel for each of the plurality of receive devices based on an interference condition of the plurality of sub channels; and inserting a corresponding response frame recommendation channel into a frame transmitted to each of the plurality of receive devices.

16 . The method of claim 15 , wherein the determining of the response frame recommendation channel includes
determining at least one of the idle sub-channels as a response frame recommendation channel of a first receive device, when an interference level of a first frame transmission channel selected for the first receive device is higher than a reference and the number of idle sub-channels is equal or more than the number of receive devices.

17 . The method of claim 16 , wherein the determining of the response frame recommendation channel further includes
determining at least one adjacent channel of the plurality of sub-channels as the response frame recommendation channel of the first receive device, when there is no idle sub-channel among the plurality of sub-channels.

18 . The method of claim 15 , further comprising:
inserting information indicating a response frame transmission delay into a transmit frame transmitted to at least one of the plurality of receive devices, when the number of idle sub-channels among the plurality of sub-channels is smaller than the number of receive devices.

19 . The method of claim 18 , wherein the information indicating the response frame transmission delay is included in a delay field of the transmit frame.

20 . The method of claim 19 , further comprising:
setting a duration field of the corresponding transmit frame based on the delay fields of each transmit frame.

Assignees

• Newracom Inc

Inventors

• Lee Ilgu

Classifications

• H04W72/541

  using the level of interference · CPC title

• H04W28/0236

  radio quality, e.g. interference, losses or delay · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W72/02

  Selection of wireless resources by user or terminal · CPC title

• H04L1/1671 Primary

  the supervisory signal being transmitted together with control information · CPC title