Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-11-25
2008-11-25
Ferguson, Keith T (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S561000, C455S550100, C455S450000, C455S509000, C455S453000
Reexamination Certificate
active
07457641
ABSTRACT:
A method and apparatus for transmitting wireless data to users which increases the wireless capacity for data transmissions within a sector served by a base station is disclosed. Accordingly, the sector is subdivided into a plurality of beams, typically by means of beam forming antennas, and the user data to be transmitted is time division multiplexed by scheduling the data into timeslots for transmission via the beams. Capacity is thus increased by decreasing network interference and/or transmitting data to more than one user at the same time by means of the multiple beams, and time division multiplexing the data. Preferably multiple users can be scheduled on multiple beams simultaneously in order to increase capacity. Preferably the same user can be allocated more than one beam if the radio conditions warrant. Such a system is optimized for data and carries out the following steps: a. Evaluating the reverse link wireless conditions for each user; b. responsive to step a, generating information defining the beam or beams to be utilized by each user; c. generating a Scheduler Metric (SM) for every user; d. scheduling each of the n beams based on the SM and said information for each user; and e. transmitting data scheduled in step d on said n beams.
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Deane Peter
Legnain Abdelgader
McGowan Neil
Borden Ladner Gervais LLP
Ferguson Keith T
Measures Jeffrey M.
Nortel Networks Limited
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