US 2006/0148525 A1Published application

Base station antenna system and method for estimating mobile station direction in wireless communication system

AssigneeSamsung Electronics Co., Ltd.

InventorsSung-Hoon Moon, Jae-Young Jang, Chung-Kyun Ham

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Abstract

Disclosed is an operation method of a base station antenna system, which includes receiving signals from at least two antennas to which a mono-pulse scheme has been applied; operating sum channel weight vectors for increasing a gain of signals incident to a specific direction and difference channel weight vectors for causing a gain of signals incident to a specific direction to be zero; applying the sum channel weight vectors and the difference channel weight vectors to the received signals, and outputting predetermined signals; and obtaining beam patterns of a sum channel and a difference channel, to which the weight vectors have been applied, by means of a direction of interest, calculating a mono-pulse ratio by means of the beam patterns, and estimating the direction of a mobile station by means of the mono-pulse ratio, and output of the sum channel and output of the difference channel to which the weight vectors have been applied.

Claims14

Dependent claims

A base station antenna system for dividing a cell of a base station into at least one sector, providing a communication service to a mobile station in the cell, and estimating a direction of the mobile station in a wireless communication system, the base station antenna system comprising:

at least two antennas with a circular array structure for receiving signals from the mobile station, each of the antennas employing a mono-pulse scheme;
a sum channel combiner for generating sum channel weight vectors in order to increase a gain of signals incident to a specific direction, applying the sum channel weight vectors to the signals received from the antennas, and outputting predetermined signals;
a difference channel combiner for generating difference channel weight vectors in order to cause a gain of signals incident to a specific direction to be zero, applying the difference channel weight vectors to the signals received from the antennas, and outputting predetermined signals;
and
an incident angle estimator for obtaining beam patterns of a sum channel and a difference channel by means of a direction of interest, calculating a mono-pulse ratio by means of the beam patterns, and estimating the direction of the mobile station by means of the mono-pulse ratio, output of the sum channel combiner, and output of the difference channel combiner.

2 more elements

An operation method of a base station antenna system for dividing a cell of a base station into at least one sector, providing a communication service to a mobile station in the cell, and estimating a direction of the mobile station in a wireless communication system, the operation method comprising the steps of:

receiving signals from at least two antennas to which a mono-pulse scheme has been applied;
operating sum channel weight vectors for increasing a gain of signals incident to a specific direction and difference channel weight vectors for causing a gain of signals incident to a specific direction to be zero;
applying the sum channel weight vectors and the difference channel weight vectors to the received signals, and outputting predetermined signals;
and
obtaining beam patterns of a sum channel and a difference channel, to which the weight vectors have been applied, by means of a direction of interest, calculating a mono-pulse ratio by means of the beam patterns, and estimating the direction of the mobile station by means of the mono-pulse ratio, and output of the sum channel and output of the difference channel to which the weight vectors have been applied.

2 more elements

Dependencies are inferred from the claim text.