Title :
A CPCH access method for prioritized services in W-CDMA
Author :
Choi, MoonYoung ; Yao, Yu-Dong ; Heffes, Harry
Author_Institution :
Digital Media R&D Center, Samsung Electron. Co., Gyeonggi-Do, South Korea
Abstract :
Common packet channel (CPCH) access is an efficient approach to support packet data transmissions in a wideband code-division multiple-access (W-CDMA) system. This letter introduces a simple access control method for CPCH, which results in higher throughput. This method also provides prioritized services for different traffic classes. Each traffic class is assigned a distinct transmit permission probability that is determined at the new call initiation stage based on the status of CPCH channel occupancy. The differentiated service qualities, which correspond to different transmit permission probabilities, are evaluated in terms of packet blocking rates. The overall system performance is also evaluated in terms of normalized throughput.
Keywords :
access protocols; broadband networks; channel allocation; code division multiple access; packet radio networks; probability; quality of service; W-CDMA system; access control method; channel assignment; common packet channel access method; packet blocking rates; packet data transmissions; prioritized services; transmit permission probability; wideband code-division multiple-access; Access control; Data communication; Interference; Laboratories; Monitoring; Multiaccess communication; Permission; Telecommunication traffic; Throughput; Wideband;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2003.822498
