Roaming of mobile radio units in a multicast digital network
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Mar 30, 2006
app pub date -
Sep 22, 2005
filing date -
Sep 22, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
During idle periods in a non trunked mobile radio network, the base stations periodically transmit a channel-marking signal. While the channel-marking signal is being transmitted base stations in the same 'channel', with adjacent coverage areas, announce information about the base station sending the channel-marking signal. Following the base station announcements, each mobile station checks the transmit frequency of the adjacent base station. If the signal from the adjacent base station is stronger than the signal from the base station to which the mobile was previously tuned, the mobile remains tuned to the new transmit frequency. Otherwise the mobile re-tunes to the original frequency.
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