COMMUNICATION DEVICE WITH PHASE/ANGLE TRANSFORMATION AND METHODS FOR USE THEREWITH
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 co-phased space-time block coding mode;
a processor that selects one of: the co-phased space-time block coding mode for transmitting a second signal and a beamforming mode for transmitting the second signal;
wherein, when the beamforming mode is selected for transmitting the second signal:
the processor converts antenna phase-related information corresponding to the co-phased space-time block coding mode to converted antenna phase-related information corresponding to the beamforming 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 converted antenna phase-related information corresponding to the beamforming mode.
2 . The communication device of claim 1 , wherein:
the processor selects one of: the co-phased space-time block coding mode for transmitting the second signal and the beamforming mode for transmitting the second signal, based on a measure of staleness of the antenna phase-related information corresponding to the co-phased space-time block coding mode.
3 . The communication device of claim 1 , wherein, when the co-phased space-time block coding 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 co-phased space-time block coding mode.
4 . 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 beamforming mode;
the processor that selects one of: the co-phased space-time block coding mode for transmitting a fourth signal and a beamforming mode for transmitting the fourth signal;
wherein, when the co-phased space-time block coding mode is selected for transmitting the fourth signal:
the processor converts antenna phase-related information corresponding to the beamforming mode to converted antenna phase-related information corresponding to the co-phased space-time block coding mode; and
the at least one of the plurality of antennas transmit the fourth signal to the remote device in accordance with the converted antenna phase-related information corresponding to the co-phased space-time block coding mode.
5 . The communication device of claim 1 , wherein:
the communication device is an access point (AP); and
the remote device is a wireless station (STA).
6 . The communication device of claim 1 , wherein:
the remote device is an access point (AP); and
the communication device is a wireless station (STA).
7 . A communication device, comprising:
a plurality of antennas to receive a first signal from a remote device, in accordance with a beamforming mode;
a baseband processor that selects one of: the beamforming mode for transmitting a second signal and a co-phased space-time coding mode for transmitting the second signal;
wherein, when the co-phased space-time coding mode is selected for transmitting the second signal:
the baseband processor converts antenna phase-related information corresponding to the beamforming mode to converted antenna phase-related information corresponding to the co-phased space-time coding 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 converted antenna phase-related information corresponding to the co-phased space-time coding mode.
8 . The communication device of claim 7 , wherein:
the baseband processor selects one of: the beamforming mode for transmitting the second signal and the co-phased space-time coding mode for transmitting the second signal, based on a measure of staleness of the antenna phase-related information corresponding to the beamforming mode.
9 . The communication device of claim 7 , wherein, when the beamforming 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 beamforming mode.
10 . The communication device of claim 7 wherein:
the plurality of antennas receive a third signal from the remote device, wherein the third signal is received accordance with to the co-phased space-time coding mode;
the baseband processor that selects one of: the beamforming mode for transmitting a fourth signal and a co-phased space-time coding mode for transmitting the fourth signal;
wherein, when the beamforming mode is selected for transmitting the fourth signal:
the baseband processor converts antenna phase-related information corresponding to the co-phased space-time coding mode to converted antenna phase-related information corresponding to the beamforming mode; and
the at least one of the plurality of antennas transmit the fourth signal to the remote device in accordance with the converted antenna phase-related information corresponding to the beamforming mode.
11 . The communication device of claim 7 , wherein:
the communication device is an access point (AP); and
the remote device is a wireless station (STA).
12 . The communication device of claim 7 , wherein:
the remote device is an access point (AP); and
the communication device is a wireless station (STA).
13 . 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:
converting the antenna phase-related information corresponding to the first operational mode to converted antenna phase-related information corresponding to the second operational mode; and
transmitting the second signal to the remote device in accordance with the converted antenna phase-related information corresponding to the second operational mode.
14 . The method of claim 13 , wherein:
the first operational mode is a space-time block coding transmission scheme and the second operational mode is a beamforming transmission scheme.
15 . The method of claim 13 , wherein:
the second operational mode is a space-time block coding transmission scheme and the first operational mode is a beamforming transmission scheme.
16 . The method of claim 13 , 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.
17 . The method of claim 13 , 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:
converting the antenna phase-related information corresponding to the second operational mode to converted antenna phase-related information corresponding to the first operational mode; and
transmitting the fourth signal to the remote device in accordance with the converted antenna phase-related information corresponding to the first operational mode.
18 . The method of claim 13 , wherein:
the communication device is an access point (AP); and
the remote device is a wireless station (STA).
19 . The method of claim 13 , wherein:
the remote device is a base station; and
the communication device is a mobile phone.
20 . The method of claim 13 , wherein:
the communication device is a base station; and
the remote device is a mobile phone.