Multi-beam cellular communication system
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United States of America Patent
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Apr 22, 2014
Issued Date -
N/A
app pub date -
Sep 14, 2012
filing date -
Mar 11, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A communication system includes base stations having an antenna arrangement per sector. Each of the antenna arrangements has an antenna element for generating an array of narrow beams covering the sector. Timeslots are simultaneously transmitted over each beam to generate successive sets of simultaneously transmitted timeslots per sector that are each split into orthogonal codes. Common overhead channels are allocated for successive sets of timeslots, which are allocated to the same subset of codes of each timeslot in the set. For successive sets of timeslots, different data is allocated to the same subset of codes of each timeslot in the set. This generates a sector-wide beam carrying the common overhead channels and a plurality of narrow beams, each carrying different data. An inter-beam handoff scheme allows the antenna arrangement to simultaneously transmits data to a user equipment located in a cusp region between adjacent beams on the adjacent beams.
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