Patent ID: 6081713
Filing Date: 2000-06-27
Classification: H04W

Abstract:
A method of reducing co-channel interference in a cellular telecommunication system having a congested serving cell, a plurality of neighbor cells controlled by a mobile switching center (MSC), and an accessing mobile station attempting to access the cellular system in the serving cell, said method comprising the steps of:camping the accessing mobile station on the serving cell's digital control channel (DCCH);fetching signal strength information from the accessing mobile station, said signal strength information including received signal strength at the accessing mobile station from the serving cell and the neighbor cells;fetching signal strength information from a plurality of busy mobile stations involved in on-going calls in the serving cell, said signal strength information including received signal strength at each busy mobile station from the serving cell and the neighbor cells;identifyig a mobile station/neighbor cell combination which causes the least co-channel interference when an identified mobile station is moved into an identified neighbor cell;determining in the MSC whether the identified mobile station is the accessing mobile station;redirecting the identified mobile station to access the cellular system in the identified neighbor cell, upon determining that the identified mobile station is the accessing mobile station; andforcing a handoff of the identified mobile station to the identified neighbor cell, upon determining that the identified mobile station is a busy mobile station involved in a call.