Patent ID: 7103364
Filing Date: 2006-09-05
Classification: H04W

Abstract:
1. In a mobile communications system using a code division multiple access method, a call acceptance controlling apparatus for controlling acceptance of new calls and handover calls when a communication through a radio channel is performed between a mobile station in a cell and two or more radio base stations each forming a cell, the call acceptance controlling apparatus comprising: new call acceptance limiting means for restricting acceptance of a new call before any one of the following events takes place, namely, an unlink interference amount in each radio channel from each mobile station that communicates with a radio base station to the radio base station reaching a predetermined maximum interference amount of the mobile communications system, a downlink total transmission power from the radio base station to mobile stations reaching a predetermined maximum power level of the mobile communications system, and an amount of spread code resources available in the radio base station reaching null, wherein the new call acceptance limiting means restricts acceptance of a new call before the uplink interference amount of a radio channel reaches the predetermined maximum interference amount of the mobile communications system, rejecting the new call to make the new call a lost call, when an uplink interference amount of any radio channel exceeds a first threshold value, comprising: interference amount measuring means for measuring an interference amount of each uplink radio channel from a mobile station to a radio base station when there is a request for a new call, and interference amount checking means for determining whether an interference amount of any radio channel measured by the interference amount measuring means is greater than the first threshold value that is defined as being smaller than the predetermined maximum interference amount of the mobile communications system.