Downlink observed time difference measurements
US6490454B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1998 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Aug 7, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/0075
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A mobile communication station in a wireless communication network is used to measure the respective times of arrival of radio signals respectively transmitted by a plurality of radio transmitters in the network. The mobile communication station is provided with real time difference information indicative of differences between a time base used by a radio transmitter serving the mobile communication station and respective time bases used by the other radio transmitters. The mobile communication station determines, in response to the real time difference information and relative to the time base used by the radio transmitter serving the mobile communication station, a plurality of points in time at which the respective radio signals are expected to arrive the mobile communication station. For each radio signal, the mobile communication station monitors for arrival of the radio signal during a period of time after the point in time at which the radio signal is expected to arrive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.