Project: Efficient voice over wireless packet-switched networks
Telephony remains amongst the most valuable communication services available, and wireless telephony services (e.g. mobile phones) have expanded dramatically in recent years. However, conventional telephony networks (even current mobile phone networks) use circuit switching, a technology that can be inefficient for bursty data transfers, and this has led to the rise of packet-switched networks, in particular for computer communication. There is an increasing trend towards providing telephony services over packet-switched networks, e.g. "Voice over IP (VOIP)". However, VOIP protocols, as they are currently used, have a large overhead, and when combined with the overheads of wireless networks (e.g. IEEE 802.11) lead to inefficient use of bandwidth, which can be scarce in wireless networks. In this project, you will improve the way in which 802.11 networks support real-time services, such as voice. The aim of this project is to implement a new scheme that effectively synchronises voice codecs with 802.11 transmission opportunities, so that more voice samples can be sent in each packet without increasing delay, and so improve network efficiency. The project will extend what you have learned about computer programming (e.g. COMP 1021) and data networks (TELE 3018) to produce software written in C that has the potential to be used worldwide as the basis for the next generation of audio communication systems.
People
Wei Zhang
Email: violentlily AT yahoo.com
Products
Taste of Research summer internship:
Poster in PPT and PDF
