Samsung Electronics Co., Ltd.

Ki-Baek Kim

Dong-Soo Park

Eun-Chan Park

Provided are a Connection Admission Control (CAC) method and apparatus in a Broadband Wireless Access (BWA) system. The CAC method includes checking a class of a requested service; converting the transmission request rate of the service into the number of required air resource blocks by using an average block capacity of the checked class; and determining whether to admit or deny connection by comparing the number of required resource blocks with the number of available resource blocks.

Connection admission control method and apparatus in broadband wireless access system

An absorptive silencer is used in a compressor which compresses a mixture of HFC-134a refrigerant and esther-based refrigeration oil. The silencer consists of low oligomer type of PBT resin 64.8-0.2%, to thereby improve a refrigeration efficiency.

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Seongnam-si, South Korea

Ki-Baek Kim