TY - GEN
T1 - Performance comparison of stall avoidance mechanisms for high speed downlink packet access in the WCDMA system
AU - Wang, Li Chun
AU - Chang, Chih Wen
AU - Chang, Han Kuang
AU - Hsieh, Chin Yang
AU - Jiang, Sam
PY - 2003
Y1 - 2003
N2 - In this paper. we investigate stall avoidance mechanisms for the W-CDMA system with high speed downlink packet access (HSDPA). The stall avoidance mechanisms are aimed to reduce transmission delays and keep in-sequence delivery of MAC layer data to the upper layer. By analysis and simulation. we compare three stall avoidance mechanisms, including the timer-based, the window-based. and the indicator-based methods. For comparison, we introduce a new performance metric called the gap processing time. Our results show that for Eb/N0 equal to 7 dB in the AWGN channel, the average gap processing time for the indicator-based method is 8.49 transmission time intervals (TTIs) and those for the window-based method and the timer-based method are 36.38 TTIs and 175.5 TTIs, respectively. In a Rayleigh fading channel, we find that the gap processing time of the window-based and the indicator-based methods are higher than in the AWGN channel, while the timer-based method has the same gap processing time in both the AWGN channel and the Rayleigh fading channel.
AB - In this paper. we investigate stall avoidance mechanisms for the W-CDMA system with high speed downlink packet access (HSDPA). The stall avoidance mechanisms are aimed to reduce transmission delays and keep in-sequence delivery of MAC layer data to the upper layer. By analysis and simulation. we compare three stall avoidance mechanisms, including the timer-based, the window-based. and the indicator-based methods. For comparison, we introduce a new performance metric called the gap processing time. Our results show that for Eb/N0 equal to 7 dB in the AWGN channel, the average gap processing time for the indicator-based method is 8.49 transmission time intervals (TTIs) and those for the window-based method and the timer-based method are 36.38 TTIs and 175.5 TTIs, respectively. In a Rayleigh fading channel, we find that the gap processing time of the window-based and the indicator-based methods are higher than in the AWGN channel, while the timer-based method has the same gap processing time in both the AWGN channel and the Rayleigh fading channel.
UR - https://www.scopus.com/pages/publications/79955602352
UR - https://www.scopus.com/pages/publications/79955602352#tab=citedBy
U2 - 10.1109/PIMRC.2003.1259155
DO - 10.1109/PIMRC.2003.1259155
M3 - Conference contribution
AN - SCOPUS:79955602352
SN - 0780378229
SN - 9780780378223
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
SP - 2431
EP - 2436
BT - PIMRC2003 - 14th IEEE 2003 International Symposium on Personal, Indoor and Mobile Radio Communications, Proceedings
T2 - 14th IEEE 2003 International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC2003
Y2 - 7 September 2003 through 10 September 2003
ER -