Back to results
US 5,857,143 AGranted
Channel allocation method used for mobile type communication devices
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorNobuhisa Kataoka
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorNobuhisa Kataoka
Estimating the term…
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.
A channel allocation method used for mobile type communication devices in a system including a plurality of macrocells and microcells both use a same frequency band divided into a plurality of channels, comprising:
A channel allocation method, used for mobile type communication devices in a system including a plurality of macrocells and microcells both use a same frequency band divided into a plurality of channels comprising:
A channel allocation method used for mobile type communication devices in a system including a plurality of macrocells and microcells both use a same frequency band divided into a plurality of channels, comprising:
Dependencies are inferred from the claim text.