Realtime service provisioning in CDMA wireless cellular networks

The future IP (Internet protocol)-based code-division multiple access (CDMA) wireless cellular networks require realtime service support. One major challenge in realtime service is quality-of-service (QoS) provisioning over the wireless link. In this paper, we propose two cross-layer resource allocation schemes for voice and video realtime services over IP-based CDMA cellular networks. For voice traffic, the transport layer model and the link layer resource allocation are combined to guarantee the high layer QoS requirements and achieve efficient resource utilization in the low layer. For video traffic, with the aid of video compression information, in-flow service differentiation can be provided to each video sequence. Simulation results demonstrate the effectiveness of our proposed schemes