IP QoS in Broadband Wireless Networks
Project Award Date: 01-01-2002
Wireless technology is experiencing a tremendous growth. It is predicted that in the near future, most people will be using wireless phones or terminals for both voice communications and Internet access. This project addresses the question of how to carry multiple types of traffic with multiple levels of service over the wireless environment. Specifically, the goal is to build a protocol or a mechanism that will allow integrating the wireless environment (represented by the MAC layer) with the QoS architectures proposed for the wired networks (e.g., the Internet Diffserv and Intserv architectures). The schemes to be developed will mainly focus on the QoS aspects related to the types of traffic and services currently being offered over the Internet (e.g., voice, Web access, email and file download). Aspects to be considered include resource reservation, service differentiation, and statistical guarantees for delay, throughput, packet drop probability and call drop probability. All of this should be done specifically considering the peculiar characteristics of a wireless environment, including excessive amount of interference, higher error rates, and lower bandwidth, and multiple access delays. The project will proceed with the following tasks:
First we will investigate the different characteristics of the proposed QoS architectures for the Internet.
Second, we will examine the different characteristics of wireless MAC protocols and search for possible methods of integrating those protocols with QoS mechanisms.
As the third task, we will develop the desired QoS architecture as a careful mapping of the Intserv and Diffserv QoS Internet architectures to the wireless environment.
Next, the different issues resulting from such an integration of the Internet with the wireless environment will be carefully addressed.
In task five, the performance of the architecture developed in task three will be studied using analytical and simulation techniques.
Sixth and last, the results obtained by the above analysis will be compared to ongoing research at ITTC addressing the performance theoretical bounds of wireless QoS architectures.
Primary Sponsor(s): Sprint Corp.