Patent ID: 6415147
Filing Date: 2002-07-02
Classification: H04W

Abstract:
A system for avoiding congestion in mobile terminal communication, comprising:(a) a plurality of mobile stations; (b) a plurality of base stations; and (c) a base station controller connected to said base stations through a common communication line, wherein each of said mobile stations having a soft-hand-off function by which each of said mobile stations can make communication with said base stations, and having a function of encoding voice signals transmitted to and received from said base station controller, with a variable rate, and wherein said base station controller monitors an activity ratio of a down common communication line and when it is judged that said activity ratio of a down common communication line is congested, said base station controller assigns an order of precedence to each of said mobile stations which uses said common communication line, based on the number of base stations to which each of said mobile stations concurrently makes communication, and said base station controller abandons low-rate voice frames at a constant ratio among voice frames of a mobile station to which a low order of precedence is assigned.