Estimating subscriber terminal speed, selecting cell, and radio system
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United States of America Patent
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Nov 12, 2002
Issued Date -
N/A
app pub date -
Nov 12, 1999
filing date -
May 13, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method for determining a speed of a subscriber terminal and for selecting a cell in a radio system comprising a plural number of microcells and at least one umbrella cell covering the microcells. The method, and a radio system applying the method, comprise means (32 and 33) which use powers of received signals for producing a probability representing an interdependence between at least two powers measured at different points of time. The probability is used for determining the speed of the subscriber terminal in means (34). In addition, on the basis of the speed of the subscriber terminal, either a microcell or an umbrella cell is selected as a cell for the active operation of the subscriber terminal.
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