Telecommunications – Transmitter and receiver at separate stations – With control signal
Reexamination Certificate
2006-08-15
2006-08-15
Orgad, Edan (Department: 2684)
Telecommunications
Transmitter and receiver at separate stations
With control signal
C455S456100, C455S456500, C455S561000, C342S350000, C342S359000, C342S423000, C342S434000, C342S445000
Reexamination Certificate
active
07092673
ABSTRACT:
The present invention relates to estimating the Angle of Arrival (AoA) of a signal from a user equipment received at a base station of a wireless telecommunications network where the base station has a multi-beam antenna. A signal received from a user equipment is received by the each of the multiple beams of the antenna, and the two adjacent beams receiving the highest amplitude from the end user are selected. A ratio of functions of the amplitudes of the two selected beams, such as a ratio of the difference between the amplitudes of the two beams to the sum of the amplitudes is calculated and compared to a data store of ratios. The data store stores expected ratios corresponding to AoAs and the calculated ratio is compared to the pre-calculated expected ratios to extract an estimate of the AoA of the signal from the user equipment.
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Bevan David
Ermolayev Victor T
Flaksman Alexander G
Mavrichev Evgeny A
Barnes & Thornburg LLP
Nortel Networks Limited
Orgad Edan
Sharma Sujatha
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