US 9,813,988 B2
Method and device for data transmission in wireless local area network
Peter Loc, Shenzhen (CN); Xun Yang, Shenzhen (CN); and Tianyu Wu, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen, Guangdong (CN)
Filed on Dec. 17, 2014, as Appl. No. 14/573,569.
Application 14/573,569 is a continuation of application No. PCT/CN2013/075820, filed on May 17, 2013.
Claims priority of application No. 2012 1 0213531 (CN), filed on Jun. 26, 2012.
Prior Publication US 2015/0103720 A1, Apr. 16, 2015
Int. Cl. H04W 52/02 (2009.01); H04W 74/04 (2009.01); H04W 72/04 (2009.01); H04W 84/12 (2009.01); H04W 74/00 (2009.01)
CPC H04W 52/0222 (2013.01) [H04W 52/0216 (2013.01); H04W 72/0413 (2013.01); H04W 74/04 (2013.01); H04W 74/002 (2013.01); H04W 84/12 (2013.01); Y02B 60/50 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for data transmission in a wireless local area network, comprising: transmitting, by a terminal, a first data frame to an access device, wherein the first data frame comprises indication information, a duration field, a reverse direction grant (RDG) message field, and uplink data, wherein the indication information is used to indicate a power save poll and uplink data transmission, the RDG message field indicates a support for reverse direction transmission so that the access device is granted to transmit multiple downlink data frames to the terminal, and the duration field is used to indicate a sum of time required by the terminal for receiving downlink data transmitted in the multiple downlink data frames to the terminal by the access device; and receiving, by the terminal, a second data frame that is transmitted by the access device within a time range indicated by the duration field according to the first data frame, wherein the second data frame comprises response information of the power save poll indicated by the indication information, and the response information comprises the downlink data.