Transmission coordination within multiple user, multiple access, and/or MIMO wireless communications
Transmission coordination within multiple user, multiple access, and/or MIMO wireless communications. Within wireless communication systems, there can be various wireless communication devices therein that are not all compliant with a common capability set, communication protocol, communication standard, recommended practice, etc. For example, some communication systems may have some wireless communication devices characterized as ‘legacy’ wireless communication devices, and other wireless communication devices therein may be newer and compliant with newer capability sets, communication protocols, communication standards, recommended practices, etc. In such instances, coordination of transmissions among the various wireless communication devices may be made, when performing simultaneous transmissions, by ensuring that transmissions of devices on different channels is made when aligned on a common boundary of an OFDM symbol. Alternatively, such simultaneous transmissions may be made when offset by some multiple of OFDM symbol duration. When performing non-simultaneous transmissions, transmissions may be made based on channel availability.
1. A wireless communication device comprising:
a communication interface; and
processing circuitry, at least one of the communication interface or the processing circuitry configured to:
transmit a first signal to at least one other wireless communication device via a first subset of orthogonal frequency division multiplexing (OFDM) sub-carriers at or during a first time and at or during a second time that is subsequent to and adjacently follows the first time; and
transmit a second signal to the at least one other wireless communication device or at least one additional wireless communication device via a second subset of OFDM sub-carriers at or during the second time, wherein transmission of the second signal via the second subset of OFDM sub-carriers begins after the first time, wherein the second signal is offset to the first signal by an integer multiple of OFDM symbol durations, wherein the integer multiple is greater than or equal to one.
2. The wireless communication device of claim 1 further comprising:
a cellular telephone, a two-way radio, a personal digital assistant (PDA), a personal computer (PC), a laptop computer, or a home entertainment equipment.
3. The wireless communication device of claim 1 , wherein:
the first subset of OFDM sub-carriers corresponds to a first 20 MHz communication channel; and
the second subset of OFDM sub-carriers corresponds to a second 20 MHz communication channel that is adjacent to the first subset of OFDM sub-carriers corresponds to the first 20 MHz communication channel.
4. The wireless communication device of claim 1 , wherein:
the first subset of OFDM sub-carriers corresponds to a 20 MHz communication sub-channel of a 160 MHz communication channel; and
the second subset of OFDM sub-carriers corresponds to a 40 MHz, 80 MHz, or 120 MHz communication sub-channel of the 160 MHz communication channel.
5. The wireless communication device of claim 1 , wherein the first signal includes first data intended for a first at least one other wireless communication device, and the second signal includes second data intended for a second at least one other wireless communication device.
6. The wireless communication device of claim 5 , wherein the first at least one other wireless communication device has a first capability, and the second at least one other wireless communication device has a second capability that is a legacy capability to the first capability.
7. The wireless communication device of claim 1 further comprising:
an access point (AP), wherein at least one of the at least one other wireless communication device or the at least one additional wireless communication device includes a wireless station (STA).
8. The wireless communication device of claim 1 further comprising:
a wireless station (STA), wherein at least one of the at least one other wireless communication device or the at least one additional wireless communication device includes another STA.
9. A wireless communication device comprising:
a communication interface; and
processing circuitry, at least one of the communication interface or the processing circuitry configured to:
transmit a first signal to at least one other wireless communication device via a first subset of orthogonal frequency division multiplexing (OFDM) sub-carriers during a first at least one OFDM symbol duration and during a second at least one OFDM symbol duration that is subsequent to and adjacently follows the first at least one OFDM symbol duration; and
transmit a second signal to the at least one other wireless communication device or at least one additional wireless communication device via a second subset of OFDM sub-carriers during the second at least one OFDM symbol duration, wherein transmission of the second signal via a second subset of OFDM sub-carriers begins after the first at least one OFDM symbol duration, wherein the second signal is offset to the first signal by an integer multiple of OFDM symbol durations, wherein the integer multiple is greater than or equal to one.
10. The wireless communication device of claim 9 further comprising:
a cellular telephone, a two-way radio, a personal digital assistant (PDA), a personal computer (PC), a laptop computer, or a home entertainment equipment.
11. The wireless communication device of claim 9 , wherein:
the first subset of OFDM sub-carriers corresponds to a 20 MHz communication sub-channel of a 160 MHz communication channel; and
the second subset of OFDM sub-carriers corresponds to a 40 MHz, 80 MHz, or 120 MHz communication sub-channel of the 160 MHz communication channel.
12. The wireless communication device of claim 9 , wherein:
the first signal includes first data intended for a first at least one other wireless communication device;
the second signal includes second data intended for a second at least one other wireless communication device;
the first at least one other wireless communication device has a first capability; and
the second at least one other wireless communication device has a second capability that is a legacy capability to the first capability.
13. The wireless communication device of claim 9 further comprising:
an access point (AP), wherein at least one of the at least one other wireless communication device or the at least one additional wireless communication device includes a wireless station (STA).
14. A method for execution by a wireless communication device, the method comprising:
transmitting, via a communication interface of the wireless communication device, a first signal to at least one other wireless communication device via a first subset of orthogonal frequency division multiplexing (OFDM) sub-carriers at or during a first time and at or during a second time that is subsequent to and adjacently follows the first time; and
transmitting, via the communication interface of the wireless communication device, a second signal to the at least one other wireless communication device or at least one additional wireless communication device via a second subset of OFDM sub-carriers at or during the second time, wherein transmission of the second signal via the second subset of OFDM sub-carriers begins after the first time, wherein the second signal is offset to the first signal by an integer multiple of OFDM symbol durations, wherein the integer multiple is greater than or equal to one.
15. The method of claim 14 , wherein the wireless communication device includes a cellular telephone, a two-way radio, a personal digital assistant (PDA), a personal computer (PC), a laptop computer, or a home entertainment equipment.
16. The method of claim 14 , wherein:
the first subset of OFDM sub-carriers corresponds to a first 20 MHz communication channel; and
the second subset of OFDM sub-carriers corresponds to a second 20 MHz communication channel that is adjacent to the first subset of OFDM sub-carriers corresponds to the first 20 MHz communication channel.
17. The method of claim 14 , wherein:
the first subset of OFDM sub-carriers corresponds to a 20 MHz communication sub-channel of a 160 MHz communication channel; and
the second subset of OFDM sub-carriers corresponds to a 40 MHz, 80 MHz, or 120 MHz communication sub-channel of the 160 MHz communication channel.
18. The method of claim 14 , wherein:
the first signal includes first data intended for a first at least one other wireless communication device;
the second signal includes second data intended for a second at least one other wireless communication device;
the first at least one other wireless communication device has a first capability; and
the second at least one other wireless communication device has a second capability that is a legacy capability to the first capability.
19. The method of claim 14 , wherein the wireless communication device includes an access point (AP), and at least one of the at least one other wireless communication device or the at least one additional wireless communication device includes a wireless station (STA).
20. The method of claim 14 , wherein the wireless communication device includes a wireless station (STA), and at least one of the at least one other wireless communication device or the at least one additional wireless communication device includes another STA.