Telecommunications – Transmitter and receiver at separate stations – Optimum frequency selection
Patent
1996-09-04
1999-01-05
Vo, Nguyen
Telecommunications
Transmitter and receiver at separate stations
Optimum frequency selection
455 63, 455450, H04B 1500, H04Q 720
Patent
active
058571434
ABSTRACT:
In an interference wave detection/study process, counters m.sub.i (t.sub.j), n.sub.i (t.sub.j) are set by an initial value "zero" to set the detection number of an interference wave of not less than a threshold power level per channel i and per time period ti. The m.sub.i (t.sub.j) is updated, then the power U.sub.i of a measured interference wave is compared with the threshold value r. The n.sub.i (t.sub.j) is updated only when U.sub.i .gtoreq.r. The n.sub.i (t.sub.j) is divided by m.sub.i (t.sub.j) to obtain the arriving probability of an interference wave. These processes are repeated over all channels. In a channel search/allocation process, the power U.sub.i of the interference wave in the smallest W.sub.i (t.sub.j) is compared with a value r, When U.sub.i (t.sub.j).gtoreq.r, the channel having the second smaller W.sub.i (t.sub.j) is selected and the above processes are repeated. it becomes a calling loss when all channels are searched. When U.sub.i <r, this channel is allocated.
REFERENCES:
patent: 5418839 (1995-05-01), Knuth et al.
patent: 5603092 (1997-02-01), Stjernholm
patent: 5625672 (1997-04-01), Yamada
J. Avery & J. Yamada, "A Common Air Interface for a Cellular Auxiliary Personal Communication Service" Proceedings of the 5th IEEE International Symposium . . . pp. 665-669, 1994.
H. Furukawa & Yoshihiko Akaiwa, "A Microcell Overlaid With Umbrella Cell System", Proceedings of the 44th IEEE vehicular technology Conference, pp. 1455-1459, 1994.
J. Worsham & J. Avery, "A Cellular Band Personal Communications System", Proceedings of the 2nd IEEE International Conference on Universal Personal Communications, 1993.
Y. Konishita, et al. "High Density Space Division Multiple Access" and Double Reuse of Frequency Channels, Proceedings of the 3rd IEEE International Conference . . . pp. 552-557, 1994.
J. E. Padgett, et al "Overview of Wireless Personal Communications", IEEE communications magazine, pp. 28-41, Jan., 1995.
Bhattacharya Sam
Mitsubishi Denki & Kabushiki Kaisha
Vo Nguyen
LandOfFree
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