Modeling TCP in a multi-rate multi-user CDMA system
Publication Date
2007
Journal or Book Title
NETWORKING 2007: Ad Hoc and Sensor Networks, Wireless Networks, Next Generation Internet, Proceedings
Abstract
Abstract Modern CDMA wireless channels support multiple transmission rates, which can be dynamically assigned to users based on traffic demand. However, in practice, assignment of high rate channels comes with the penalty of increased power as well as smaller orthogonal codes, which constrains their assignment to only a subset of active users. This motivates the need to carefully control high rate channel assignments,so as to minimize,power and achieve fairness among users. In this work, we propose a simple class of channel allocation policies to achieve this goal for TCP sessions. We develop an analytical model,that explicitly captures both TCP dynamics,and the impact of multiple users contending for a shared resource to evaluate the performance,of the allocation policy. The model,is shown to be accurate by comparing,against ns-2 simulations and its utility demonstrated,by computing the minimum,number,of required high rate channels to minimize,contention. Index Terms TCP throughput, CDMA, Cellular, Resource allocation, Multi-user.
DOI
http://dx.doi.org/10.1007/978-3-540-72606-7_35
Pages
403-414
Volume
4479
Book Series Title
LECTURE NOTES IN COMPUTER SCIENCE
Recommended Citation
Ghaderi, M; Sridharan, A; Zang, H; Towsley, D; and Cruz, R, "Modeling TCP in a multi-rate multi-user CDMA system" (2007). NETWORKING 2007: Ad Hoc and Sensor Networks, Wireless Networks, Next Generation Internet, Proceedings. 1149.
http://dx.doi.org/10.1007/978-3-540-72606-7_35