H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/04 (2006.01) H04B 7/005 (2006.01) H04L 1/00 (2006.01) H04Q 7/36 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 2268424
A method of allocating a transmission centre frequency for a candidate transmission within a frequency spectrum available for communications within a telecommunications system is described, the candidate transmission having a power/frequency characteristic representative of the power of the candidate transmission as a function of frequency. The method includes providing a power spectrum representative of the cumulative effect of the power/frequency characteristics of at least a portion of the existing transmissions at a plurality of centre frequencies within the frequency spectrum at the time of allocation and evaluating allocation decision values defined by a first function of the power spectrum and the power/frequency characteristic of the candidate transmission. The centre frequency for the candidate transmission is selected from the frequency spectrum based on a minimum value among the evaluated allocation decision values or based on an evaluated allocation decision value being below a first threshold value. The first function is preferably indicative of the interference of the existing transmissions on the candidate transmision. Preferably, the selection of a suitable centre frequency is only carried out if the value of a second function of the power spectrum and the power/frequency characteristic of the candidate transmission is below a predetermined value. The second function is preferably indicative of interference of the candidate transmission on the existing transmissions. A control element for controlling a transceiver in the telecomunications system is also described.
Lucidarme Thierry
Vincent Paul
Nortel Matra Cellular
Smart & Biggar
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