Abstract
In this paper, we propose an adaptive system for improving videophone transmission over EDCA. We consider that a videophone contains a constant bit rate (CBR) voice source and a rate-adaptive video source. Two issues are addressed in this research. Firstly, how to solve the AP bottleneck problem, and secondly, how to adjust video source rate to improve the network performance. For the first issue, we propose the adjustment of the transmission opportunity (TXOP) to give AP a higher priority in voice transmission in order to eliminate the AC3 transmission bottleneck at the AP. For the second issue, our principle is to guarantee the throughput of voice traffic while transmitting as much video traffic as possible. Moreover, we consider more realistic multi-rate WLANs, where multiple transmission rates are used in the PHY layer depending on the underlaying channel conditions.
| Original language | English |
|---|---|
| Title of host publication | ICC 2008 - IEEE International Conference on Communications, Proceedings |
| Publisher | IEEE, Institute of Electrical and Electronics Engineers |
| Pages | 3258-3262 |
| Number of pages | 5 |
| ISBN (Print) | 9781424420742 |
| DOIs | |
| Publication status | Published - 2008 |
| Externally published | Yes |
| Event | IEEE International Conference on Communications 2008: Communications: Faster-Higher-Stronger - Crown Plaza Park View, Beijing, China Duration: 19 May 2008 → 23 May 2008 http://icc2008.ieee-icc.org/sessions.html http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=4533035 (IEEE Conference Proceedings) |
Conference
| Conference | IEEE International Conference on Communications 2008 |
|---|---|
| Abbreviated title | ICC 2008 |
| Country/Territory | China |
| City | Beijing |
| Period | 19/05/08 → 23/05/08 |
| Internet address |
|