Mobile station and method for channel sounding using a single radio frequency transmitter chain in a multiple-input multiple-output (MIMO) system
First Claim
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1. A mobile station comprising:
- a radio-frequency (RF) switching element;
RF transmitter circuitry to provide a channel-sounding preamble to the RF switching element, the RF switching element to provide different portions of the channel-sounding preamble to each of a plurality of mobile-station antennas for serial transmission of the different portions to an access point; and
a controller to instruct the switching element to switch between the mobile-station antennas based on durations of fields of the channel-sounding preamble to provide for the serial transmission of the different portions of the preamble.
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Abstract
Embodiments of a mobile station and a method for channel sounding in a wireless network are generally described herein. Other embodiments may be described and claimed. In some embodiments, channel sounding is performed using a single radio frequency transmitter chain in a multiple-input multiple-output (MIMO) system. In some embodiments, portions of a channel sounding preamble are serially transmitted on several transmit mobile-station antennas to enable MIMO beamforming by an access point.
44 Citations
30 Claims
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1. A mobile station comprising:
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a radio-frequency (RF) switching element; RF transmitter circuitry to provide a channel-sounding preamble to the RF switching element, the RF switching element to provide different portions of the channel-sounding preamble to each of a plurality of mobile-station antennas for serial transmission of the different portions to an access point; and a controller to instruct the switching element to switch between the mobile-station antennas based on durations of fields of the channel-sounding preamble to provide for the serial transmission of the different portions of the preamble. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of exciting a channel performed by a transmitter, the method comprising:
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serially transmitting different portions of a channel-sounding preamble with each of a plurality of mobile-station antennas of a mobile station for use by an access point in transmitting beamformed signals to the mobile station; and switching between the mobile-station antennas based on durations of fields of the channel-sounding preamble to provide for serial transmission of the different portions. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A mobile station system comprising:
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two or more substantially omnidirectional mobile-station antennas; a radio-frequency (RF) switching element coupled to the antennas; RF transmitter circuitry to provide a channel-sounding preamble to the RF switching element, the RF switching element to provide different portions of the channel-sounding preamble to different one of the mobile-station antennas for serial transmission of the different portions to an access point; and a controller to instruct the switching element to switch between the mobile-station antennas based on durations of fields of the channel-sounding preamble to provide for the serial transmission. - View Dependent Claims (24, 25, 26)
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27. A computer-readable storage medium that stores instructions for execution by one or more processors to cause serial transmission of different portions of a channel-sounding preamble with each of a plurality of mobile-station antennas of a mobile station for use by an access point in transmitting beamformed signals to the mobile station, and
wherein the instructions cause the mobile station to switch between the mobile-station antennas based on durations of fields of the channel-sounding preamble to provide for the serial transmission.
Specification