Frame formatting for communications within single user, multiple user, multiple access, and/or MIMO wireless communications
View Patent ↗Frame formatting for communications within single user, multiple user, multiple access, and/or MIMO wireless communications. A signal is processed within a communication device using at least two respective downclocking ratios (e.g., a first downclocking ratio applied to a first portion of the signal such as a frame or packet extracted there from, a second downclocking ratio applied to a second portion of the signal). Alternatively, a signal is divided into more than two respective portions, and different respective downclocking ratios are applied to those different respective portions (e.g., a first downclocking ratio applied to a first portion of the signal, and so on up to an n-th downclocking ratio applied to an n-th portion of the signal). Some implementations apply a singular or common downclocking ratio to more than one portion of the signal (which may be contiguous/adjacent or non-contiguous/non-adjacent within the signal).
1. A wireless communication device comprising:
a communication interface; and
a processor, at least one of the processor or the communication interface configured to:
receive a first signal from another wireless communication device via a communication channel having a channel bandwidth;
process the first signal to extract a first packet therefrom, wherein the first packet includes a first at least one orthogonal frequency division multiplexing (OFDM) symbol that has a first length;
downclock a first portion of the first packet, having a first fast Fourier transform (FFT) structure and also including a first signal field (SIG), using a first down clocking factor and downclock a second portion of the first packet, having a second FFT structure and also including at least one of a first long training field (LTF) or a first data portion, using a second down clocking factor to generate a first downclocked packet;
receive a second signal from the another wireless communication device via the communication channel having the channel bandwidth;
process the second signal to extract a second packet therefrom, wherein the second packet includes a second at least one OFDM symbol that has a second length; and
downclock a first portion of the second packet, having a third FFT structure and also including a second SIG, using a third down clocking factor and downclock a second portion of the second packet, having a fourth FFT structure and also including at least one of a second LTF or a second data portion, using a fourth down clocking factor to generate a second downclocked packet.
2. The wireless communication device of claim 1 , wherein:
the second down clocking factor being relatively higher or larger than the first down clocking factor.
3. The wireless communication device of claim 1 , wherein:
the first portion of the first packet including a first signal field (SIG A) and the second portion of the first packet including at least one long training field (LTF), a second first signal field (SIG B), and the first data portion.
4. The wireless communication device of claim 1 , wherein:
the first portion of the first packet having a 64 fast Fourier transform (FFT) structure; and
the second portion of the first packet having a 128 FFT structure.
5. The wireless communication device of claim 1 further comprising:
a wireless station (STA), wherein the another wireless communication device is an access point (AP).
6. A wireless communication device comprising:
a communication interface; and
a processor, at least one of the processor or the communication interface configured to:
receive a first signal from another wireless communication device via a communication channel having a channel bandwidth;
process the first signal to extract a first packet therefrom, wherein the first packet includes a first at least one orthogonal frequency division multiplexing (OFDM) symbol that has a first length;
downclock a first portion of the first packet using a first down clocking factor and downclock a second portion of the first packet using a second down clocking factor to generate a first downclocked packet;
receive a second signal from the another wireless communication device via the communication channel having the channel bandwidth;
process the second signal to extract a second packet therefrom, wherein the second packet includes a second at least one OFDM symbol that has a second length; and
downclock a first portion of the second packet using a third down clocking factor and downclock a second portion of the second packet using a fourth down clocking factor to generate a second downclocked packet.
7. The wireless communication device of claim 6 , wherein:
the first portion of the first packet including a signal field (SIG) and the second portion of the first packet including at least one of a long training field (LTF) or a data portion.
8. The wireless communication device of claim 6 , wherein:
the first portion of the first packet including a signal field (SIG) and the second portion of the first packet including at least one of a long training field (LTF) or a data portion; and
the second down clocking factor being relatively higher or larger than the first down clocking factor.
9. The wireless communication device of claim 6 , wherein:
the first portion of the first packet including a first signal field (SIG A) and the second portion of the first packet including at least one long training field (LTF), a second first signal field (SIG B), and a data portion.
10. The wireless communication device of claim 6 , wherein:
the first portion of the first packet having a first fast Fourier transform (FFT) structure; and
the second portion of the first packet having a second FFT structure.
11. The wireless communication device of claim 6 , wherein:
the first portion of the first packet having a 64 fast Fourier transform (FFT) structure; and
the second portion of the first packet having a 128 FFT structure.
12. The wireless communication device of claim 6 , wherein:
a ratio of the first down clocking factor to the second down clocking factor being an exponent of 2.
13. The wireless communication device of claim 6 further comprising:
a wireless station (STA), wherein the another wireless communication device is an access point (AP).
14. A method for execution by a wireless communication device, the method comprising:
receiving, via a communication interface of the wireless communication device, a first signal from another wireless communication device via a communication channel having a channel bandwidth;
processing the first signal to extract a first packet therefrom, wherein the first packet includes a first at least one orthogonal frequency division multiplexing (OFDM) symbol that has a first length;
downclocking a first portion of the first packet using a first down clocking factor and downclocking a second portion of the first packet using a second down clocking factor to generate a first downclocked packet;
receiving, via the communication interface of the wireless communication device, a second signal from the another wireless communication device via the communication channel having the channel bandwidth;
processing the second signal to extract a second packet therefrom, wherein the second packet includes a second at least one OFDM symbol that has a second length; and
downclocking a first portion of the second packet using a third down clocking factor and downclocking a second portion of the second packet using a fourth down clocking factor to generate a second downclocked packet.
15. The method of claim 14 , wherein:
the first portion of the first packet including a signal field (SIG) and the second portion of the first packet including at least one of a long training field (LTF) or a data portion.
16. The method of claim 14 , wherein:
the first portion of the first packet including a signal field (SIG) and the second portion of the first packet including at least one of a long training field (LTF) or a data portion; and
the second down clocking factor being relatively higher or larger than the first down clocking factor.
17. The method of claim 14 , wherein:
the first portion of the first packet including a first signal field (SIG A) and the second portion of the first packet including at least one long training field (LTF), a second first signal field (SIG B), and a data portion.
18. The method of claim 14 , wherein:
the first portion of the first packet having a first fast Fourier transform (FFT) structure; and
the second portion of the first packet having a second FFT structure.
19. The method of claim 14 , wherein:
the first portion of the first packet having a 64 fast Fourier transform (FFT) structure; and
the second portion of the first packet having a 128 FFT structure.
20. The method of claim 14 , wherein the wireless communication device being a wireless station (STA), and the another wireless communication device is an access point (AP).