Resource allocation for scalable video broadcast in wireless cellular networks

Video broadcast services have become increasingly popular on packet-based wireless networks, such as 1xEV-DO and HSDPA which support high data rate. In this paper we propose a resource allocation algorithm for scalable video broadcast over such wireless networks. Our algorithm allocates time slots among the video layers of a scalable video and applies adaptive modulation and coding (AMC) to each video layer to maximize the sum of utilities for heterogeneous users with varying QoS requirements. It also considers competing video sessions and allocates time slots among them according to user preferences. Additionally, its polynomial time-complexity allows for online resource allocation that is necessary for real-time video services. Simulation experiments show that our algorithm outperforms a single-layer video broadcast with fixed modulation and coding (FMC), used in broadcast and multicast services (BCMCS) in the CDMA2000 system, and produce a near-optimal allocation.