Patent ID: 7468951

Claim:
A method for evaluating number of additional admissible calls for use in call admission control, comprising: tracking a percentage of channel busy time and transmission time of downlink and uplink voice packets; receiving a call admission request; calculating the number of admissible calls based on the percentage of channel busy time and the transmission time of downlink and uplink voice packets; and approving the call admission request if the number of additional admissible calls is greater than one and rejecting the call admission request if the number of additional admissible calls is less than one; wherein calculating the number of additional calls comprises calculating: Na= min( Na 1, Na 2); where: Na 1= dt* (1− Pb )/( T 1 — u+T 1 — d ); and Na 2= dT/T 1 — d−N; where: dT is an interval of voice packets; N is number of admitted calls; Pb is the percentage of channel busy time; T 1 _u is the transmission time of downlink voice packets; and T 1 _d is the transmission time of uplink voice packets.