Method and device for transmitting uplink frame in wireless lan

Patent metadata

Field	Value
Publication number	US-2016302156-A1
Application number	US-201415038717-A
Country	US
Kind code	A1
Filing date	Nov 14, 2014
Priority date	Nov 25, 2013
Publication date	Oct 13, 2016
Grant date	—

Abstract

A method and a device for transmitting an uplink frame in a wireless LAN are disclosed. The method for transmitting an uplink frame in a wireless LAN can comprise the steps of: receiving, by at least one STA included in a UL-OFDMA transmission STA group, transmission power determination information from an AP; determining, by the at least one STA, uplink transmission power on the basis of the transmission power determination information; and transmitting, by the at least one STA, an uplink frame by the uplink transmission power in an overlapped time resource through each channel allocated on the basis of OFDMA.

First claim

What is claimed is:

1 . A method for transmitting an uplink frame in wireless LAN, the method comprising:
receiving, by at least one station (STA) included in an uplink (UL)-orthogonal frequency division multiplexing (OFDMA) transmission STA group, transmission power determination information from an access point (AP); determining, by the at least one STA, uplink transmission power on the basis of the transmission power determination information; and transmitting, by the at least one STA, an uplink frame by the uplink transmission power in an overlapped time resource through each channel allocated on the basis of OFDMA, wherein the UL-OFDMA transmission group is a group including the at least one STA that transmits the uplink frame to the AP through different frequency resources on the overlapped time resource on the basis of the OFDMA.

2 . The method of claim 1 , wherein the transmission power determination information includes information on a channel to be used by the UL-OFDMA transmission group.

3 . The method of claim 1 , wherein the uplink transmission power is determined by considering minimum power for network allocation vector (NAV) negotiation of an adjacent STA that performs a channel access on a channel overlapped with the at least one STA.

4 . The method of claim 1 , wherein:
the transmission power determination information includes the information on the channel to be used by the UL-OFDMA transmission group, and the information on the channel to be used by the UL-OFDMA transmission group is bitmap information or index information for indicating a UL-OFDMA transmission channel to be used by the UL-OFDMA transmission group among all UL-OFDMA transmission channels.

5 . The method of claim 1 , wherein the transmission power determination information includes information on the number of the at least one STA included in the UL-OFDMA transmission group.

6 . At least one station (STA) included in an uplink (UL)-orthogonal frequency division multiplexing (OFDMA) transmission STA group transmitting an uplink frame in wireless LAN, the at least one STA comprising:
a radio frequency (RF) unit implemented to transmit or receive a radio signal; and a process operatively connected with the RF unit, wherein the processor is implemented to receive transmission power determination information from an access point (AP), determine uplink transmission power based on the transmission power determination information, and transmit an uplink frame by the uplink transmission power in an overlapped time resource through each channel allocated on the basis of OFDMA, and the UL-OFDMA transmission group is a group including the at least one STA that transmits the uplink frame to the AP through different frequency resources on the overlapped time resource on the basis of the OFDMA.

7 . The STA of claim 6 , wherein the transmission power determination information includes information on a channel to be used by the UL-OFDMA transmission group.

8 . The STA of claim 6 , wherein the uplink transmission power is determined by considering minimum power for network allocation vector (NAV) negotiation of an adjacent STA that performs a channel access on a channel overlapped with the at least one STA.

9 . The STA of claim 6 , wherein:
the transmission power determination information includes the information on the channel to be used by the UL-OFDMA transmission group, and the information on the channel to be used by the UL-OFDMA transmission group is bitmap information or index information for indicating a UL-OFDMA transmission channel to be used by the UL-OFDMA transmission group among all UL-OFDMA transmission channels.

10 . The STA of claim 6 , wherein the transmission power determination information includes information on the number of the at least one STA included in the UL-OFDMA transmission group.

Assignees

• Lg Electronics Inc

Inventors

• Choi Jinsoo
• Chun Jinyoung
• Lee Wookbong
• Lim Dongguk
• Cho Hangyu

Classifications

• H04L5/0023

  Time-frequency-space · CPC title

• H04W88/08

  Access point devices · CPC title

• H04W52/146 Primary

  Uplink power control · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04J11/0069

  Cell search, i.e. determining cell identity [cell-ID] (design of multiplexing codes H04J13/00; processing access restriction or access information H04W48/16; discovery of network devices for network data management H04W8/005; sounding signals for channel estimation H04L25/0226; structure of reference signals in multicarrier modulation systems H04L27/2613; frame, time or carrier synchronisation in multicarrier modulation systems H04L27/2655) · CPC title