RANDOM PERTURBATION-BASED BEAMFORMING METHOD AND APPARATUS FOR USE IN MOBILE COMMUNICATION SYSTEM
First Claim
1. An antenna control method of a base station in a wireless communication system using a beamforming technique, the method comprising:
- measuring nth received signal strength at nth phase of at least one receive antenna;
measuring (n+1)th received signal strength at (n+1)th phase shifted randomly from the nth phase in one of forward and backward directions; and
configuring a beamforming coefficient with the phase at which the received signal strength is greatest through comparison of received signal strengths.
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Abstract
A method and apparatus configures a beamforming coefficient based on the signal strength information without collecting channel information by adjusting the phase of the antennas through random perturbation. An antenna control method of a base station in a wireless communication system using a beamforming technique includes measuring nth received signal strength at nth phase of at least one receive antenna, measuring (n+1)th received signal strength at (n+1)th phase shifted randomly from the nth phase in one of forward and backward directions, and configuring a beamforming coefficient with the phase at which the received signal strength is greatest through comparison of received signal strengths. The random perturbation-based beamforming method and apparatus of the present disclosure is capable of configuring the beamforming coefficient appropriate for the normal cellular environment using a plurality analog array antenna without channel estimation overhead.
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Citations
20 Claims
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1. An antenna control method of a base station in a wireless communication system using a beamforming technique, the method comprising:
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measuring nth received signal strength at nth phase of at least one receive antenna; measuring (n+1)th received signal strength at (n+1)th phase shifted randomly from the nth phase in one of forward and backward directions; and configuring a beamforming coefficient with the phase at which the received signal strength is greatest through comparison of received signal strengths. - View Dependent Claims (2, 3, 4, 5)
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6. An antenna control method of a terminal in a wireless communication system using a beamforming technique, the method comprising:
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measuring nth received signal strength at nth phase of at least one receive antenna; measuring (n+1)th received signal strength at (n+1)th phase shifted randomly from the nth phase in one of forward and backward directions; and configuring a beamforming coefficient with the phase at which the received signal strength is greatest through comparison of received signal strengths. - View Dependent Claims (7, 8, 9, 10)
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11. A base station controlling antennas in a wireless communication system using a beamforming technique, the base station comprising:
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a transceiver configured to transmit and receive signals to and from a terminal; and a controller configured to; control to measure nth received signal strength at nth phase of at least one receive antenna, control to measure (n+1)th received signal strength at (n+1)th phase shifted randomly from the nth phase in one of forward and backward directions, and configure a beamforming coefficient with the phase at which the received signal strength is greatest through comparison of received signal strengths. - View Dependent Claims (12, 13, 14, 15)
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16. A terminal controlling antennas in a wireless communication system using a beamforming technique, the terminal comprising:
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a transceiver configured to transmit and receive signals to and from a base station; and a controller configured to; control to measure nth received signal strength at nth phase of at least one receive antenna, measure (n+1)th received signal strength at (n+1)th phase shifted randomly from the nth phase in one of forward and backward directions, and configure a beamforming coefficient with the phase at which the received signal strength is greatest through comparison of received signal strengths. - View Dependent Claims (17, 18, 19, 20)
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Specification