BASE STATION APPARATUS AND DIRECTIVITY CONTROL METHOD IN MOBILE COMMUNICATION SYSTEM
First Claim
1. A base station apparatus for a mobile communication system, comprising:
- a collection unit configured to collect measured data from one or more user equipment terminals with respect to each direction of arrival, the measured data including at least quality information of a downlink signal;
a conversion unit configured to convert the measured data into an evaluation value in accordance with a predetermined evaluation function;
a deriving unit configured to derive a weight update amount based on an angular distribution of the plural evaluation values, the weight update amount determining directivity; and
a transmission unit configured to transmit a downlink signal weighted based on the weight update amount.
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Abstract
A disclosed base station apparatus for a mobile communication system includes a collection unit collecting measured data from one or more user equipment terminals with respect to each direction of arrival, the measured data including at least quality information of a downlink signal, a conversion unit converting the measured data into an evaluation value in accordance with a predetermined evaluation function, a deriving unit deriving a weight update amount determining directivity based on an angular distribution of the plural evaluation values, and a transmission unit transmitting a downlink signal weighted based on the weight update amount.
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Citations
10 Claims
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1. A base station apparatus for a mobile communication system, comprising:
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a collection unit configured to collect measured data from one or more user equipment terminals with respect to each direction of arrival, the measured data including at least quality information of a downlink signal; a conversion unit configured to convert the measured data into an evaluation value in accordance with a predetermined evaluation function; a deriving unit configured to derive a weight update amount based on an angular distribution of the plural evaluation values, the weight update amount determining directivity; and a transmission unit configured to transmit a downlink signal weighted based on the weight update amount. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A directivity control method to be used in a base station apparatus for a mobile communication system, comprising:
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a collecting step of collecting measured data from one or more user equipment terminals with respect to each direction of arrival, the measured data including at least quality information of a downlink signal; a converting step of converting the measured data into an evaluation value in accordance with a predetermined evaluation function; a deriving step of deriving a weight update amount based on an angular distribution of the plural evaluation values, the weight update amount determining directivity; and a transmitting step of transmitting a downlink signal weighted based on the weight update amount. - View Dependent Claims (10)
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Specification