Preamble with modified signal field (SIG) for use in wireless communications

摘要

A wireless communication device (‘device’) is configured to generate an OFDM/A packet that includes at least one OFDM/A symbol that includes at least one SIG having SIG information modulated on only even (or odd) sub-carriers and does not include any information modulated on odd (or even) sub-carriers of a set of OFDM/A sub-carriers. The set of OFDM/A sub-carriers may be all or less than all of available sub-carriers. The device may generate the packet to include a preamble and a payload such that the payload, which may be composed of at least one additional OFDM/A symbol, includes data modulated on some or all of the sub-carriers of the set of OFDM/A sub-carriers. The device can modulate and transmit SIG information and data differently within the preamble and the payload (e.g., with higher ordered modulation or MCS for the data and less power per sub-carrier than for the preamble).

主权项

1. A wireless communication device comprising:
a communication interface; and a processor, at least one of the processor or the communication interface configured to:
generate a preamble for an orthogonal frequency division multiplexing (OFDM) packet that includes the preamble and a payload, wherein the payload includes data modulated on all sub-carriers of a set of OFDM sub-carriers, and that includes at least one OFDM symbol that includes at least one signal field (SIG) having SIG information modulated on only even sub-carriers of the set of OFDM sub-carriers, wherein odd sub-carriers of the set of OFDM sub-carriers are devoid of any information modulated thereon; andtransmit the OFDM packet to another wireless communication device using a first transmission power for each of the even sub-carriers of the set of OFDM sub-carriers that includes the SIG information modulated in the preamble that is approximately double a second transmission power for each of the sub-carriers that includes the data modulated in the payload.