Patent ID: 8238293

Claim:
A channel bandwidth utilization ratio evaluation method of evaluating a utilization ratio of a channel bandwidth of a wireless communication system for making stream communication, said wireless communication system accompanied by random access, the method comprising: receiving, by a channel bandwidth utilization ratio evaluating apparatus, a determination request for allocation of bandwidth; obtaining a traffic parameter, being a parameter indicating a traffic condition in said wireless communication system, and a transmission parameter, being a parameter indicating a transmission condition in which data is transmitted in said wireless communication system; evaluating a transmission collision probability based on coder-decoder (CODEC) information and packet cycle time information of each stream; calculating a channel bandwidth utilization ratio, being a utilization ratio at which data utilizes a bandwidth of a channel of said wireless communication system, based on the obtained traffic parameter and obtained transmission parameter; and determining whether to permit the allocation of bandwidth based on the calculated channel bandwidth utilization ratio, wherein said wireless communication system employs a Medium Access Control (MAC) layer to thereby make stream-type communication in a wireless environment accompanied by data retransmission due to a wireless transmission error or a collision of data.