Patent ID: 6834193
Filing Date: 2004-12-21
Classification: H04W

Abstract:
A method for processing a traffic channel request in a cellular radio system in which a request is received for the allocation of a traffic channel to a mobile station from a particular radio cell, the method comprising:calculating the number of traffic channels in use in said radio cell: measuring the quality of ongoing connections of adjacent radio cells using at least to some extent the same frequency channels as said radio cell; deciding whether a traffic channel is to be allocated or not allocated, the number of traffic channels in use and the quality of the ongoing connections of the adjacent cells being at least taken into account in the decision so that the allocation of the traffic channel to the mobile station from said radio cell is prevented if the number of traffic channels in use exceeds a predetermined threshold value and if the mean value of quality for the ongoing connections of any of the adjacent cells is lower than a predetermined minimum quality value; determining probabilities corresponding to different mean values of quality; calculating mean values for the ongoing connections of said adjacent cells; calculating a number by utilizing the probabilities corresponding to said mean values; and comparing said number with a number generated by a random number generator, wherein said comparing said number with a number generated by a random number generator is further taken into account when the decision regarding the allocation or non-allocation of the traffic channel is made so that if the mean values of quality for all adjacent cells are higher than said minimum quality value and lower than a predetermined maximum quality value the traffic channel is allocated, provided that the number generated by the random number generator is smaller than or equal to the number calculated by using the probabilities.