US 9,521,671 B2 · Method and device for performing channel access in WLAN system

Abstract

One embodiment of the present invention relates to a method whereby a station (STA) which is irrelevant to a multi user (MU) group performs channel access in a wireless communication system, the method for performing channel access comprising the steps of: receiving a resource allocation frame; and checking a group indicator field comprised in the resource allocation frame, wherein the STA determines a slot start offset through the first bit of a slot allocation field for the MU group in case the group indicator field indicates the presence of the slot allocation field for the MU group in the resource allocation frame.

Claims13

Dependent claims

A method for performing channel access at a station (STA) which does not belong to a multiuser (MU) group in a wireless communication system, the method comprising:

receiving a resource assignment frame comprising one or more slot assignment fields;
and
checking a group indicator field included in the resource assignment frame,
wherein, if the group indicator field indicates that a slot assignment field for the MU group is present in the one or more slot assignment fields,
the STA determines, by using a first bit of the slot assignment field for the MU group, a slot assignment field, of the one or more slot assignment fields, containing a subfield which includes information to be used for a comparison with an association ID (AID) of the STA,
wherein the first bit indicates whether the slot assignment field is a last slot assignment field for the MU group.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/411,833Filed 5 Aug 2013 · us provisional application

Priority

27 Mar 2013

Published

US 2015/0237623 A120 Aug 2015

Granted

13 Dec 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

H04W 72/0446
Based on the type of the allocated resource: resources in time domain, e.g. slots or frames
H04B 7/0452
MIMO systems: multi-user MIMO systems
H04W 4/70
Services specially adapted for wireless communication networks; Facilities therefor: services for machine-to-machine communication [M2M] or…
H04W 52/0216
Managed by the network, e.g. network or access point is leader and terminal is follower: using a pre-established activity schedule, e.g. traffic…

Family

Application61/805,898Us provisional application · filed 27 Mar 2013

Application61/805,932Us provisional application · filed 28 Mar 2013

Application61/807,715Us provisional application · filed 2 Apr 2013

US 2015/0237623 A1Pre-grant publication · published 20 Aug 2015

US 9,521,671 B2This patent

From the US filing history. Foreign family members aren’t listed.

Method and device for performing channel access in WLAN system

Life of this patent

Method and device for performing channel access in WLAN system

Life of this patent

Abstract

Claims13