US 10,476,648 B2Granted

Method and apparatus for transmitting frame

AssigneeLG Electronics Inc.

InventorsSuhwook Kim, Kiseon Ryu, Wookbong Lee, Jeongki Kim

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Abstract

Disclosed are a method and apparatus for transmitting a frame. A method for transmitting a frame in a wireless LAN comprises the steps of: an AP transmitting a first RTS frame, through a primary channel, to a plurality of first target STAs; the AP receiving, from one target STA from among the plurality of first target STAs, a first CTS frame as a response to the first RTS frame, through the primary channel; and the AP transmitting, to the plurality of first target STAs, a plurality of pieces of first downlink data for each of the respective plurality of first target STAs, through a plurality of first subbands included in the primary channel on one first data frame, wherein a first RTS frame may include identification information for each of the plurality of first target STAs.

Claims6

Dependent claims

A method for transmitting a frame in a wireless local area network (WLAN), the method comprising:

transmitting, by an access point (AP), a first Request-to-Send (RTS) frame to a plurality of first target stations (STAs) via a first channel, and a second RTS frame to a plurality of second target STAs via a second channel within a same time resource as the first RTS frame,
wherein the first RTS frame includes first information for identifying the plurality of first target STAs and second information related to a plurality of first subbands allocated for the plurality of first target STAs,
wherein the second RTS frame includes third information for identifying the plurality of second target STAs and fourth information related to a plurality of second subbands allocated for the plurality of second target STAs,
wherein the plurality of first subbands are included in the first channel, and
wherein the plurality of second subbands are included in the second channel;
after transmission of the first RTS frame and the second RTS frame, receiving, by the AP, a first Clear-to-Send (CTS) frame from only one of the plurality of first target STAs via the first channel, and a second CTS frame from only one of the plurality of second target STAs via the second channel,
wherein the second CTS frame is received within a same time resource as the first CTS frame;
and
transmitting, by the AP, a plurality of first downlink (DL) data frames to the plurality of first target STAs via the plurality of first subbands based on the second information after receiving the first CTS frame, and a plurality of second DL data frames to the plurality of second target STAs via the plurality of second subbands based on the fourth information within a same time resource as the plurality of first DL data frames after receiving the second CTS frame.

6 more elements

An access point (AP) for transmitting a frame in a wireless local area network (WLAN), the AP comprising:

a radio frequency (RF) unit configured to transmit and receive radio signals;
and
a processor operatively connected to the RF unit and configured to:
control the RF unit to transmit a first Request-to-Send (RTS) frame to a plurality of first target stations (STAs) via a first channel, and a second RTS frame to a plurality of second target STAs via a second channel within a same time resource as the first RTS frame,
wherein the first RTS frame includes first information for identifying the plurality of first target STAs and second information related to a plurality of first subbands allocated for the plurality of first target STAs,
wherein the second RTS frame includes third information for identifying the plurality of second target STAs and fourth information related to a plurality of second subbands allocated for the plurality of second target STAs,
wherein the plurality of first subbands are included in the first channel, and
wherein the plurality of second subbands are included in the second channel;
after transmission of the first RTS frame and the second RTS frame, control the RF unit to receive a first Clear-to-Send (CTS) frame from only one of the plurality of first target STAs via the first channel, and a second CTS frame from only one of the plurality of second target STAs via the second channel,
wherein the second CTS frame is received within a same time resource as the first CTS frame;
and
control the RF unit to transmit a plurality of first downlink (DL) data frames to the plurality of first target STAs via the plurality of first subbands based on the second information after receiving the first CTS frame, and a plurality of second DL data frames to the plurality of second target STAs via the plurality of second subbands based on the fourth information within a same time resource as the plurality of first DL data frames after receiving the second CTS frame.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/316,823Filed 28 Jan 2015 · us provisional application
Priority: 19 Jun 2014
Published: US 2017/0104570 A113 Apr 2017
Granted: 12 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04L 5/0055
Allocation of signalling, i.e. of overhead other than pilot signals: physical resource allocation for ACK/NACK
H04B 7/26
For communication between two or more posts: at least one of which is mobile
H04L 27/26
Modulated-carrier systems: systems using multi-frequency codes
H04W 72/0446
Based on the type of the allocated resource: resources in time domain, e.g. slots or frames