Network resource sharing during handover of a mobile station between cellular wireless networks
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United States of America Patent
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-
Sep 28, 2004
Grant Date -
Nov 1, 2001
app pub date -
Apr 13, 2001
filing date -
Apr 17, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
System components of cellular wireless networks are shared during and after a mobile station handover from a first cellular wireless network (system A) to a second cellular wireless network (system B). According to one aspect, layer 2/3 call control functions are anchored in a base station controller (BSC) of system A, even after a data communication is handed over from system A to system B. According to another aspect, a link layer supporting the data communication is anchored in the BSC of system A servicing the data communication. In this case, the BSC of system A interfaces with a serving BTS of system B to service the ongoing data communication. According to still another aspect, the link layer is handed over to system B but the link layer of system B continues to use a link layer transmit buffer of system A that remains in the servicing BSC of system A.
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