US 2014/0369276 A1 · Flexible OFDMA packet structure for wireless communications

Abstract

A communication device includes a processor configured to generate OFDMA packets using various OFDMA packet structures and to transmit such OFDMA packets, via a communication interface, to at least one other communication device. The processor is also configured to receive, interpret, and process such OFDMA packets. One example of an OFDMA packet includes common SIG for two or more other wireless communication devices modulated across all sub-carriers of the OFDMA packet. The common SIG is followed by first SIG and first data for a first other wireless communication device modulated across first subset of the sub-carriers of the OFDMA packet and is also followed by second SIG and second data for a second other wireless communication device modulated across second subset of the sub-carriers of the OFDMA packet. Another example of an OFDMA packet includes the common SIG followed directly by first data and second data modulated as described above.

Claims20

Dependent claims

A wireless communication device comprising:

a communication interface;
and
a processor configured to:
generate an orthogonal frequency division multiple access (OFDMA) packet, wherein the OFDMA packet includes common signal field (SIG) for first and second other wireless communication devices modulated across all sub-carriers of the OFDMA packet, wherein the common SIG is followed by first SIG and first data for the first other wireless communication device modulated across first subset of the sub-carriers of the OFDMA packet, wherein the common SIG is also followed by second SIG and second data for the second other wireless communication device modulated across second subset of the sub-carriers of the OFDMA packet, wherein the first SIG has different length than the second SIG;
and
transmit the OFDMA packet, via the communication interface, to the first and the second other wireless communication devices.

3 more elements

A wireless communication device comprising:

a communication interface;
and
a processor configured to:
generate an orthogonal frequency division multiple access (OFDMA) packet, wherein the OFDMA packet includes common signal field (SIG) for first and second other wireless communication devices modulated across all sub-carriers of the OFDMA packet, wherein the common SIG is adjacently followed by first short training field (STF) that is adjacently followed by first SIG that is adjacently followed by first data for the first other wireless communication device modulated across first subset of the sub-carriers of the OFDMA packet, wherein the common SIG is also adjacently followed by second STF that is adjacently followed by second SIG that is adjacently followed by second data for the second other wireless communication device modulated across second subset of the sub-carriers of the OFDMA packet, wherein length of the common SIG is based on at least one of number of the first and the second other wireless communication devices and amount of both the first and the second data, and wherein the first SIG has different length than the second SIG;
and
transmit the OFDMA packet, via the communication interface, to the first and the second other wireless communication devices.

3 more elements

A method for execution by a wireless communication device, the method comprising:

generating an orthogonal frequency division multiple access (OFDMA) packet, wherein the OFDMA packet includes common signal field (SIG) for first and second other wireless communication devices modulated across all sub-carriers of the OFDMA packet, wherein the common SIG is followed by first SIG and first data for the first other wireless communication device modulated across first subset of the sub-carriers of the OFDMA packet, wherein the common SIG is also followed by second SIG and second data for the second other wireless communication device modulated across second subset of the sub-carriers of the OFDMA packet, wherein the first SIG has different length than the second SIG;
and
transmitting the OFDMA packet, via a communication interface of the wireless communication device, to the first and the second other wireless communication devices.

Dependencies are inferred from the claim text.

Flexible OFDMA packet structure for wireless communications

Life of this patent

Flexible OFDMA packet structure for wireless communications

Life of this patent

Abstract

Claims20