H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/30
H04B 7/26 (2006.01)
Patent
CA 1275702
METHOD AND APPARATUS FOR REDUCING HANDOFF ERRORS IN A CELLULAR RADIO TELEPHONE COMMUNICATIONS SYSTEM ABSTRACT OF THE DISCLOSURE Wrong handoffs in a cellular radio telephone RF communications system can be minimized or eliminated without increasing locating receiver equipment require- ments, field strength measurement time or system response time. Field strength measurements are made at handoff candidate cells and also at cells neighboring (geographically proximate to) those candidate cells. A weighted average of the measured field strength of the candidate cell and the field strength measured in cells neighboring the candidate cell is calculated for each candidate cell (the field strengths measured by neighboring cells may be multiplied by a weighting factor of 0.5). The weighted averages for the candidate cells are compared, and the candidate cell corresponding to the highest average is selected to handle the mobile transceiver call. Statistical analysis shows that this technique for determining handoff candidates significantly reduces the probability that a call will be handed off to a cell which is geographically distant from the mobile transceiver -- even in the presence of propagation anomalies.
552856
Company General Electric
Craig Wilson And Company
LandOfFree
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