Wireless system signal propagation collection and analysis
US7853267B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2001 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Jul 5, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W16/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
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 on…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.