Method and apparatus for variable header repetition in a wireless OFDM network with multiple overlapped frequency bands

摘要

Method and apparatus for use within a wireless OFDM network that transmits and receives first and second packets each having header bits and utilizing variable header repetition. The header bits in the first packet are communicated on multiple OFDM symbols and repeated on a plurality of OFDM subcarriers in a first frequency band. The header bits in a second packet are communicated on fewer OFDM symbols and in a second frequency band that overlaps with and is wider than the first frequency band.

主权项

1. A wireless OFDM (Orthogonal Frequency Division Multiplexing) transceiver operable to:
receive, in a first narrower frequency band, by a receiver using wireless OFDM communications, a first packet comprising a first number of OFDM symbols that carry a first plurality of header bits; demodulate, by a demodulator connected to and in communication with the receiver, the first number of OFDM symbols to determine the first plurality of header bits, wherein at least one header bit of the first plurality of header bits in the first packet is repeated on a plurality of OFDM subcarriers; receive, in a second wider frequency band, by the receiver using wireless OFDM communications, a second packet comprising a second number of OFDM symbols, less than the first number of OFDM symbols, that carry a second plurality of header bits, different than the first plurality of header bits; and demodulate, by the demodulator, the second number of OFDM symbols to determine the second plurality of header bits, wherein the first narrower and second wider frequency bands have one or more overlapping frequency regions.