Name
Title | ||
|---|---|---|
Cross-layer design for radio resource allocation based on priority scheduling in OFDMA wireless access network |
Abstract | ||
|---|---|---|
The orthogonal frequency-division multiple access (OFDMA) system has the advantages of flexible subcarrier allocation and
adaptive modulation with respect to channel conditions. However, transmission overhead is required in each frame to broadcast
the arrangement of radio resources to all mobile stations within the coverage of the same base station. This overhead greatly
affects the utilization of valuable radio resources. In this paper, a cross layer scheme is proposed to reduce the number
of traffic bursts at the downlink of an OFDMA wireless access network so that the overhead of the media access protocol (MAP)
field can be minimized. The proposed scheme considers the priorities and the channel conditions of quality of service (QoS)
traffic streams to arrange for them to be sent with minimum bursts in a heuristic manner. In addition, the trade-off between
the degradation of the modulation level and the reduction of traffic bursts is investigated. Simulation results show that
the proposed scheme can effectively reduce the traffic bursts and, therefore, increase resource utilization. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1186/1687-1499-2011-28 | EURASIP J. Wireless Comm. and Networking |
Keywords | Field | DocType |
scheduling,qos,overhead,mapping,ofdma,wimax,adaptive modulation,quality of service,mobile station,base station,resource utilization | Subcarrier,Link adaptation,Broadcasting,Base station,Wireless,Computer science,Computer network,Quality of service,Real-time computing,WiMAX,Access network | Journal |
Volume | Issue | ISSN |
2011 | 1 | 1687-1499 |
Citations | PageRank | References |
22 | 0.42 | 10 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yen-Wen Chen | 1 | 144 | 24.44 |
| Chang-Wu Chen | 2 | 22 | 1.10 |
| Yi-Shiou Lin | 3 | 22 | 0.42 |