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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jinho Hwang Refaei, M.T. Hyeong-Ah Choi Jae-Hoon Kim JungKyo Sohn Choi, H.I. |
| Copyright Year | 2007 |
| Description | Author affiliation: George Washington Univ., Washington (Jinho Hwang) |
| Abstract | To support high data rates, CDMA lx Ev- DO utilizes TDMA technology on the downlink allowing a single receiver per time slot. Accordingly, a scheduling algorithm is necessary to determine which user receives data in a given time slot. Typically, schedulers consider efficiency (increasing network throughput) or fairness (fair allocation of resources among users) as the basis for scheduling. To realize a reasonable tradeoff between efficiency and fairness, opportunistic schedulers have been proposed that take advantage of instantaneous improvements in users radio conditions by serving them at higher rates. However, given the increasing demand to support user QoS requirements, a QoS-aware scheduler may need to serve users even at times of inadequate radio conditions. In this paper, we propose a QoS-aware packet scheduling algorithm that takes into account policy rules that govern the relationships between different user QoS classes. Our scheduler uses marginal utility functions defined to embody the given rules when selecting users to be served on the downlink. Our scheduling algorithm is implemented in the OPNET module of the CDMA lx Ev-DO system that we have developed, and its performance is compared to other scheduling algorithms. The simulation results show that our scheduler performs well ensuring the policy rules are followed, meeting users' QoS requirements, and providing fairness among users within the same QoS class. |
| Starting Page | 4592 |
| Ending Page | 4597 |
| File Size | 222489 |
| Page Count | 6 |
| File Format | |
| ISBN | 1424403537 |
| DOI | 10.1109/ICC.2007.758 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-06-24 |
| Publisher Place | UK |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Scheduling algorithm Multiaccess communication Quality of service Downlink Throughput Time division multiple access Resource management Round robin Communications Society Computer science |
| Content Type | Text |
| Resource Type | Article |
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