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In this article, we design and demonstrate a signaling architecture for multicast and broadcast services over a laboratory-emulated worldwide interoperability for microwave access (WiMAX) network. WiMAX is a broadband wireless access technology which includes different quality of service levels. Currently, a significant research effort focuses on data transmission optimization and mobility support for multicast and broadcast services. Our proposal is fully IP-based, and the relevant signaling architecture is modular in all its entities and extensible to other, non-WiMAX, IP access networks. We specifically address the non-trivial support of multicast services, which has been demonstrated through a prototype implementation of our proposal for an Internet protocol television (IPTV) service. This prototype has been implemented by using open source technologies and its signaling is orchestrated by a JAIN SLEE server. The results obtained show that the implemented system is scalable, can achieve both high signaling throughput and low service latency, and has a signaling overhead lower than similar IMS-based solutions.

A signaling architecture for multimedia MBS over WiMAX