Communication device with phase/angle transformation and methods for use therewith
View Patent ↗A communication device includes antennas to receive a first signal from a remote device, wherein the first signal corresponds to a first operational mode. A baseband processor selects either a first operational mode for transmitting a second signal or a second operational mode for transmitting the second signal. When the second operational mode is selected the baseband processor transforms the phase-related information corresponding to the first operational mode to transformed phase-related information corresponding to the second operational mode. The antennas transmit the second signal to the remote device in accordance with the transformed phase-related information corresponding to the second operational mode.
1. A communication device, comprising:
a plurality of antennas to receive a first signal from a remote device, in accordance with a first operational mode that corresponds to a first transmission scheme;
a baseband processor that selects one of: the first operational mode for transmitting a second signal in accordance with the first transmission scheme and a second operational mode for transmitting the second signal in accordance with a second transmission scheme that differs from the first transmission scheme;
wherein, when the second operational mode is selected for transmitting the second signal:
the baseband processor transforms antenna phase-related information corresponding to the first operational mode to transformed antenna phase-related information corresponding to the second operational mode, wherein the antenna phase-related information is one of: angle information between at least two of the plurality of antennas or phase information between at least two of the plurality of antennas; and
the at least two of the plurality of antennas transmit the second signal to the remote device in accordance with the transformed antenna phase-related information corresponding to the second operational mode.
2. The communication device of claim 1 , wherein:
the baseband processor selects one of: the first operational mode for transmitting the second signal and the second operational mode for transmitting the second signal, based on a measure of staleness of the antenna phase-related information corresponding to the first operational mode.
3. The communication device of claim 1 , wherein:
the first operational mode is a space-time block coding transmission scheme and the second operational mode is a beamforming transmission scheme.
4. The communication device of claim 1 , wherein:
the second operational mode is a space-time block coding transmission scheme and the first operational mode is a beamforming transmission scheme.
5. The communication device of claim 1 , wherein, when the first operational mode is selected for transmitting the second signal:
the plurality of antennas transmit the second signal to the remote device in accordance with the antenna phase-related information corresponding to the first operational mode.
6. The communication device of claim 1 wherein:
the plurality of antennas receive a third signal from the remote device, wherein the third signal is received accordance with to the second operational mode;
the baseband processor that selects one of: the first operational mode for transmitting a fourth signal and a second operational mode for transmitting the fourth signal;
wherein, when the first operational mode is selected for transmitting the fourth signal:
the baseband processor transforms antenna phase-related information corresponding to the second operational mode to transformed antenna phase-related information corresponding to the first operational mode; and
the at least one of the plurality of antennas transmit the fourth signal to the remote device in accordance with the transformed antenna phase-related information corresponding to the first operational mode.
7. The communication device of claim 1 , wherein:
the communication device is an access point (AP); and
the remote device is a wireless station (STA).
8. The communication device of claim 1 , wherein:
the remote device is an access point (AP); and
the communication device is a wireless station (STA).
9. A method for use in a communication device, the method comprising:
receiving a first signal from a remote device via at least two antennas, wherein the first signal is received in accordance with a first operational mode that corresponds to a first transmission scheme;
selecting one of: the first operational mode for transmitting a second signal and a second operational mode that corresponds to a second transmission scheme for transmitting the second signal, based on a measure of staleness of antenna phase-related information corresponding to the first operational mode that includes a phase difference between the at least two antennas;
when the second operational mode is selected for transmitting the second signal:
transforming the antenna phase-related information corresponding to the first operational mode to transformed antenna phase-related information corresponding to the second operational mode; and
transmitting the second signal to the remote device in accordance with the transformed antenna phase-related information corresponding to the second operational mode.
10. The method of claim 9 , wherein:
the first operational mode is a space-time block coding transmission scheme and the second operational mode is a beamforming transmission scheme.
11. The method of claim 9 , wherein:
the second operational mode is a space-time block coding transmission scheme and the first operational mode is a beamforming transmission scheme.
12. The method of claim 9 , wherein, the method further comprises:
when the first operational mode is selected for transmitting the second signal:
transmitting the second signal to the remote device in accordance with the antenna phase-related information corresponding to the first operational mode.
13. The method of claim 9 , further comprising:
receiving a third signal from the remote device, wherein the third signal corresponds to the second operational mode;
selecting one of: the first operational mode for transmitting a fourth signal and a second operational mode for transmitting the fourth signal;
wherein, when the first operational mode is selected for transmitting the fourth signal:
transforming the antenna phase-related information corresponding to the second operational mode to transformed phase-related information corresponding to the first operational mode; and
transmitting the fourth signal to the remote device in accordance with the transformed antenna phase-related information corresponding to the first operational mode.
14. The method of claim 9 , wherein:
the communication device is an access point (AP); and
the remote device is a wireless station (STA).
15. The method of claim 9 , wherein:
the remote device is an access point (AP); and
the communication device is a wireless station (STA).
16. The method of claim 9 , wherein:
the communication device is a base station; and
the remote device is a mobile communication device.
17. A communication device, comprising:
at least one radio frequency section that receives a first signal from a remote device via a plurality of antennas, wherein the first signal is received in accordance with a first operational mode that corresponds to one of: a space-time block coding transmission scheme or a beamforming transmission scheme;
a baseband processor that selects one of: the first operational mode for transmitting a second signal and a second operational mode for transmitting the second signal, wherein the second operation mode corresponds to one of: a space-time block coding transmission scheme or a beamforming transmission scheme, that differs from the first operational mode;
wherein, when the second operational mode is selected for transmitting the second signal:
the baseband processor transforms antenna phase-related information corresponding to the first operational mode that includes a phase difference between at least two of the plurality of antennas to transformed antenna phase-related information corresponding to the second operational mode; and
the at least one radio frequency section transmits the second signal to the remote device via the plurality of antennas in accordance with the transformed antenna phase-related information corresponding to the second operational mode.
18. The communication device of claim 17 , wherein:
the baseband processor selects one of: the first operational mode for transmitting the second signal and the second operational mode for transmitting the second signal, based on a measure of staleness of the antenna phase-related information corresponding to the first operational mode.
19. The communication device of claim 17 , wherein:
the communication device is an access point (AP); and
the remote device is a wireless station (STA).
20. The communication device of claim 17 , wherein:
the remote device is an access point (AP); and
the communication device is a wireless station (STA).