| 摘要 |
The present invention provides, among other things, a method and algorithm for measuring a mobile transceiver's speed, based on the effects Rayleigh fading on a received radio signal transmitted between a base station and a mobile transceiver. When a mobile transceiver moves rapidly, the received signal will vary rapidly. When a mobile transceiver moves slowly, the received signal will vary slowly. By measuring the fluctuations in the received signal intensity, the speed of a mobile unit can be measured. The algorithm used in the present invention is based on a short term correlation between the fast multi-path fading and the speed of a mobile transceiver relative to its current base station. The present invention has particular application in cellular environments where the fast fading can be modelled according to a Rayleigh distribution. It is possible to exploit the mobile's speed for resource management decision. |
