TRANSMISSION POWER CONTROL METHOD OF BASE STATION IN OFDMA-BASED WIRELESS COMMUNICATION SYSTEM
First Claim
1. A method for controlling a power amplifier of a base station in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA), the method comprising:
- checking scheduling information of radio resources;
detecting a symbol carrying no user data, based on the scheduling information; and
turning off a bias of the power amplifier for a symbol duration of the symbol carrying no user data.
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Abstract
A power control method of a base station in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA) is provided for reducing power consumption by turning off the bias of the power amplifier for the duration of a symbol carrying no user data. The method includes checking scheduling information of radio resources, detecting a symbol carrying no user data, based on the scheduling information, and turning off a bias of the power amplifier for a symbol duration of the symbol carrying no user data. The transmission power control method is capable of reducing power consumption of the base station by turning off the bias of the power amplifier of the base station for the symbol duration in which no user data is transmitted.
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Citations
20 Claims
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1. A method for controlling a power amplifier of a base station in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA), the method comprising:
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checking scheduling information of radio resources; detecting a symbol carrying no user data, based on the scheduling information; and turning off a bias of the power amplifier for a symbol duration of the symbol carrying no user data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A base station for a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA), the base station comprising:
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a controller for acquiring information of a symbol carrying no user data by referencing scheduling information of radio resources; and a Radio Frequency (RF) unit for turning off a bias applied to a power amplifier for a symbol duration of the symbol carrying no user data by referencing the symbol information provided by the controller. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A base station for a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA), the base station comprising:
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a controller including a scheduler for assigning radio resources; and a Radio Frequency (RF) unit for acquiring information on a symbol carrying no user data based on transmission powers of individual symbols within a frame and for turning off a bias applied to a power amplifier for a symbol duration of the symbol carrying no user data. - View Dependent Claims (19, 20)
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Specification