Dynamic resource allocation in a high efficiency wireless lan

Patent metadata

Field	Value
Publication number	US-2016105836-A1
Application number	US-201514880176-A
Country	US
Kind code	A1
Filing date	Oct 9, 2015
Priority date	Oct 10, 2014
Publication date	Apr 14, 2016
Grant date	—

Abstract

The present invention relates to a method and apparatus for dynamically allocating resources in a High Efficiency WLAN (Wireless Local Area) (HEW). According to one aspect of the present invention, a method for resource switching in a WLAN may be provided. The method may include receiving, by a station (STA) from an access point (AP), a downlink multiple user (DL MU) frame on a resource indicated by first resource allocation information, the DL MU frame including the first resource allocation information and second resource allocation information for a next MU frame following the DL MU frame, and processing, by the STA, the next MU frame based on a resource indicated by the second resource allocation information.

First claim

What is claimed is:

1 . A method for resource switching in a wireless local area network, the method comprising:
receiving, by a station (STA) from an access point (AP), a downlink multiple user (DL MU) frame on a resource indicated by first resource allocation information, the DL MU frame including the first resource allocation information and second resource allocation information for a next MU frame following the DL MU frame; and processing, by the STA, the next MU frame based on a resource indicated by the second resource allocation information.

2 . The method according to claim 1 , wherein the first resource allocation information or the second resource allocation information is determined by the AP based on available resource information of the STA.

3 . The method according to claim 1 , wherein the first resource allocation information is received before High Efficiency-Short Training Field (HE-STF) or High Efficiency-Long Training Field (HE-LTF) in the DL MU frame.

4 . The method according to claim 3 , wherein the STA switches to the resource indicated by the first resource allocation information to receive the HE-STF or HE-LTF on the resource indicated by the first resource allocation information.

5 . The method according to claim 3 , wherein the first resource allocation information is included in High Efficiency-SIGNAL (HE-SIG) in the DL MU PPDU.

6 . The method according to claim 1 , wherein the next MU frame is an uplink multiple user (UL MU) frame, and the DL MU frame includes triggering information for eliciting a transmission of the UL MU frame.

7 . The method according to claim 6 , wherein the STA switches to the resource indicated by the second resource allocation information to transmit the UL MU frame on the resource indicated by the second resource allocation information.

8 . The method according to claim 6 , wherein the DL MU frame includes data units for the STA and one or more other STAs, and the UL MU frame includes acknowledgement (ACK) information of the STA and the one or more other STAs.

9 . The method according to claim 6 , wherein the DL MU frame includes a trigger frame for the UL MU frame, and the UL MU frame includes uplink data units transmitted from the STAs and one or more other STAs.

10 . The method according to claim 6 , wherein the DL MU frame includes block ACK request for the STA and one or more other STAs, and the UL MU frame includes block ACK information of the STA and the one or more other STAs.

11 . The method according to claim 6 , wherein a same transmit spectrum mask is used for the UL MU transmission by the STA and one or more other STAs.

12 . The method according to claim 11 , wherein the same transmit spectrum mask is determined based on a channel width of the DL MU frame.

13 . The method according to claim 2 , wherein the available resource information include at least one of information on operating channel width, information on supported channel, or information on supported channel width set.

14 . A method for supporting resource switching in a wireless local area network, the method comprising:
transmitting, by an access point (AP) to a station (STA) among a plurality of STAs, a downlink multiple user (DL MU) frame on a resource indicated by first resource allocation information, the DL MU frame including the first resource allocation information and second resource allocation information for next MU frame following the DL MU frame; and processing, by the AP, the next MU frame based on a resource indicated by the second resource allocation information.

15 . The method according to claim 14 , wherein the first resource allocation information or the second resource allocation information is determined based on available resource information of the STA.

16 . The method according to claim 14 , wherein the first resource allocation information is transmitted before High Efficiency-Short Training Field (HE-STF) or High Efficiency-Long Training Field (HE-LTF) in the DL MU frame.

17 . The method according to claim 16 , wherein the first resource allocation information is included in High Efficiency-SIGNAL (HE-SIG) in the DL MU frame.

18 . The method according to claim 14 , wherein the next MU frame is an uplink multiple user (UL MU) frame, the DL MU frame includes triggering information for eliciting a transmission of the UL MU frame.

19 . The method according to claim 18 , wherein:
the DL MU frame includes data units for the STA and one or more other STAs, and the UL MU frame includes acknowledgement (ACK) information of the STA and the one or more other STAs, the DL MU frame includes a trigger frame for an uplink MU transmission, and the UL MU frame includes uplink data units transmitted from the STAs and the one or more other STAs, or the DL MU frame includes block ACK request for the STA and the one or more other STAs, and the UL MU frame includes block ACK information of the STA and the one or more other STAs.

20 . The method according to claim 15 , wherein the available resource information include at least one of information on operating channel width, information on supported channel, or information on supported channel width set.

Assignees

• Newracom Inc

Inventors

• Seok Yongho

Classifications

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/042

  Electricity · mapped topic

• H04W72/0413

  Electricity · mapped topic

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W36/32 Primary

  by location or mobility data, e.g. speed data · CPC title