Patent ID: 9167476
Filing Date: 2015-10-20
Classification: H04L,H04W

Abstract:
1. A method for simultaneously transmitting a packet to a plurality of users in a wireless communication system, the method comprising: generating the packet including a first signal field, a second signal field commonly for the plurality of users, a plurality of training field groups corresponding to the plurality of users respectively, a plurality of third signal fields corresponding to the plurality of users respectively, and a plurality of data frames corresponding to the plurality of users respectively, wherein the first signal field includes information related to length of the packet, the length is determined based on a length of the longest data frame among the plurality of data frames, the second signal field includes common control information for the plurality of users, each third signal field includes individual control information for respective user, each training field group includes at least one training field, and each training field includes one or more training symbols; transmitting the first signal field to the plurality of users; transmitting the second signal field to the plurality of users; transmitting the plurality of training fields to the plurality of users; transmitting the plurality of third signal fields to the plurality of users; and transmitting the plurality of data frames to the plurality of users, wherein each data frame includes a plurality of data subframes and a final medium access control (MAC) pad, wherein the final MAC pad is positioned after the last data subframe, and the final MAC pad is an integer number of bytes in length, which is from 0 to 3, and wherein the transmission of the second signal field is followed by the transmission of the plurality of training field groups.