Scoreboard, Inc.

Andrew Corporation

Eric Jensen

John Arpee

Wireless systems coverage planning uses propagation modeling to provide a prediction of service coverage. Accurate and effective wireless systems coverage analysis requires a measurement of signal strength and knowledge of the location corresponding to the measurement. Wireless signal strength, RSSI, can determined by measuring the signal received by a wireless mobile unit from the cell site antenna or can be determined by measuring the signal received by the antenna from a wireless mobile unit. The received signal strength is compared to the origination signal strength to determine path loss, RSSI. The location of a wireless mobile unit can be determined by a number of different methods. Wireless location systems can be handset-based or network-based. Examples of handset-based wireless location systems include enhanced global positioning systems; enhanced observed time difference; and estimated time of departure. Examples of network-based wireless location systems include estimated time of arrival; time difference of arrival; power level; difference of power level; angle of arrival. Each of these methods rely on the travel of a cellular signal between a mobile unit and at least one cell site. The location of a mobile wireless unit and the strength of the signal received from the mobile wireless unit are utilized to develop a set of measurement data used to evaluate the coverage effectiveness of a wireless system. In addition, these measurements facilitate the enhanced determination of likely service areas, enhanced scoring based upon traffic patterns and the enhanced effective correction of system anomalies.

Wireless system signal propagation collection and analysis

A computer implemented process compares signals communicated between a known position and a plurality of base stations in a cellular telephone system to determine the level of interference with a signal on a channel expected to serve the known position, and determines a value indicating a probability of interference with a signal on a channel expected to serve the known position.

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Herndon, VA, United States of America

Eric Jensen