Patent ID: 6070082
Filing Date: 2000-05-30
Classification: H04M,H04W,Y02D

Abstract:
For a communication apparatus having a plurality of communication devices, for communicating via one of a plurality of channels, each communication device having a first storage storing a specified number of channels allocated to said communication device and said communication device can select from among said plurality of channels, a second storage storing historical use data for each of said plurality of channels used by other communication devices, and a selected channel change circuit to change channels with a high frequency of use in the first storage to those with a low frequency of use according to a combination of historical use data stored in said second storage of a called communication device and historical use data in said second storage in a calling communication device, a method of obtaining said historical used data stored in the second storage comprising the steps of:sampling each channel for use for a certain period of time;accumulating the historical use data in the second storage with the historical use data collected in a previous sampling cycle weighted at every sampling time for said certain period of time; andafter the step of sampling and when a call ends, transmitting the historical use data in the called communication device to the calling communication device and executing the channel change by said selected channel change circuit in the calling communication device.