MODULATION OF SIGNAL FIELD IN A WLAN FRAME HEADER

摘要

A plurality of training fields of a preamble of a multi-user physical layer data unit are generated, and training fields of the plurality of training fields are mapped to respective signal streams of a plurality of streams using a mapping matrix, where different portions of each column of the mapping matrix correspond to different client devices. A first signal field of the preamble of the data unit corresponding to a first client device is generated, and the first signal field is mapped to a first set of signal streams using a first portion of a column of the mapping matrix. A second signal field of the preamble of the data unit corresponding to the second client device is generated, and the second signal field is mapped to a second set of signal streams using a second portion of the column of the mapping matrix.

主权项

1. A method, comprising:
generating a plurality of training fields of a preamble of a multi-user physical layer data unit; mapping training fields of the plurality of training fields to respective signal streams of a plurality of streams using a mapping matrix, wherein different portions of each column of the mapping matrix correspond to different client devices including a first client device and a second client device; generating a first signal field of the preamble of the data unit corresponding to the first client device; mapping the first signal field to the plurality of signal streams corresponding to the first client device using a portion of a column of the mapping matrix corresponding to the first client device; generating a second signal field of the preamble of the data unit corresponding to the second client device; mapping the second signal field to the plurality of signal streams corresponding to the second client device using another portion of the column of the mapping matrix corresponding to the second client device; mapping the plurality of signal streams to a plurality of spatial streams; and transmitting at least i) the plurality of training fields, ii) the first signal field, and iii) the second signal field via the plurality of spatial streams.