Title :
Comparative downlink shared channel evaluation of WCDMA release 99 and HSDPA
Author :
Chiu, Che-Sheng ; Lin, Chen-Chiu
Author_Institution :
Wireless Commun. Technol. Lab, Chunghwa Telecom Labs., Taiwan
Abstract :
In order to avoid downlink channelization code shortage, a DSCH has been specified for WCDMA Release 99 system, and has been designed for enabling high data rate packet transmission. Further, WCDMA Release 5 introduces HSDPA to realize higher speed data rate together with lower round-trip times. In this paper, the performance of the downlink shared channel of Release 99 and HSDPA systems has been presented and compared. The system level simulation results were obtained using a dynamic system simulator. The simulator includes all relevant radio characteristics, WCDMA/HSDPA functions, and realistic models of the downlink traffic generated by Web browsing users. The results show that the HSDPA concept provides a 200% higher capacity gain than Release 99 DSCH and it goes to triple the service throughput when system load is increased. Moreover, the HSDPA concept offers outstanding improvement in the packet call throughput and also significantly reduces the packet call transfer delay as compared with the Release 99 DSCH.
Keywords :
broadband networks; code division multiple access; data communication; packet radio networks; radio links; telecommunication channels; telecommunication traffic; HSDPA; WCDMA; Web browsing users; comparative downlink; data rate packet transmission; downlink channelization code shortage; downlink traffic; high speed downlink packet access; packet call transfer delay; shared channel evaluation; wideband code division multiple access; Communications technology; Data communication; Delay; Downlink; Laboratories; Multiaccess communication; Power control; Telecommunications; Throughput; Wireless communication;
Conference_Titel :
Networking, Sensing and Control, 2004 IEEE International Conference on
Print_ISBN :
0-7803-8193-9
DOI :
10.1109/ICNSC.2004.1297112
