Patent ID: 7813282

Claim:
A method of performing a Connection Admission Control (CAC) process in a Broadband Wireless Access (BWA) system, comprising the steps of: checking, by a Base Station (BS), a class of a requested service; converting, by the BS, a transmission request rate of the requested service into a number of required air resource blocks by using an average block capacity of the checked class and determining the number of available blocks; and determining, by the BS, whether to admit or deny the connection by comparing the number of required air resource blocks with a number of available blocks, wherein the step of determining the number of available blocks includes computing a Modulation and Coding Scheme (MCS) distribution probability for each service class, computing an average block capacity for each service class by using the MCS distribution probability, determining the number of used air resource blocks for each service class by using the average block capacity and determining the number of available blocks by using the number of used blocks for the service class, and wherein the number of available blocks is computed by number ⁢ ⁢ of ⁢ ⁢ available ⁢ ⁢ blocks = γ ⁢ ⁢ S - ∑ m = 1 M ⁢ ⁢ S m used , where S denotes a total number of blocks, M denotes the number of service classes, S m used denotes the number of used blocks for the m-th service class, and γ denotes a weighting factor applied to the requested service class.