Differentiated Services In Wireless Data Networks
Admission control; QoS; Resource allocation; Wireless data
With the introduction of wireless data services, attention has to be paid in providing differentiated services to mobile hosts/users in a cellular radio system. Differentiated services (not to be confused with DiffServ) can be provided by managing the aggregated traffic flow from each service class in such a way that the revenue generated is maximized. We first provide an architectural framework in which the wireless system in conjunction with the service level agreement (SLA) database decides on the resource allocation to individual users. Cobb-Douglas utility function is used as the basis for the revenue from the carrier's perspective. Then we represent each service class by a sub-space of the QoS space which is like a higher dimensional Euclidean space. We apply vector quantization to shrink the infinite-point space to a finite-point space by partitioning the former into N regions such that the points (identified by a QoS index) within a region reflect almost similar system performance. Once the QoS space is characterized, we show how different sub-spaces can be mapped to the various service classes. We also demonstrate how apriori knowledge of the operating point region helps in any decision pertaining to call admission and resource allocation which eventually maximizes the utility function.
Proceedings of the fifth ACM International Workshop on Wireless Mobile Multimedia
Number of Pages
Article; Proceedings Paper
Source API URL
Chatterjee, Mainak; Das, Sajal K.; and Basu, Kalyan, "Differentiated Services In Wireless Data Networks" (2002). Scopus Export 2000s. 2777.