Handover method and device for a cellular mobile radio system
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United States of America Patent
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-
Mar 18, 1997
Grant Date -
N/A
app pub date -
Oct 27, 1994
filing date -
Oct 28, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a method for handover between old and new cells of a time-division multiple access (TDMA) cellular mobile radio system a call between a mobile station and the system, initially effected via the old cell on a first channel defined by a first on air timeslot and a first set of frequencies comprising at least one frequency, is effected via the new cell on a new channel defined by a second on air timeslot and a second set of frequencies comprising at least one frequency. The first and second on air timeslots are identical, the first and second sets of frequencies are separate, and the method consists in transmitting, after verifying that the second on air timeslot identical to the first on air timeslot is available in the new cell, a frequency indication message indicating to the mobile station the second set of frequencies so that the mobile station continues the call using the same on air timeslot and the second set of frequencies.
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