These features, together with the capability of covering large areas with relatively few base stations (BSs), are fundamental to deploy effective wireless broadband network services able to support many applications, such as data exchange, audio/video streaming, and VoIP services, with different levels of quality of service (QoS). By using suitable communication technologies, such as multiple input multiple output smart antennas and orthogonal frequency division multiple access, WiMAX can provide high throughput, efficient data multiplexing, and low transmission latency in both fixed and mobile communications. Its architecture includes a set of flexible capabilities which enable the convergence of mobile and fixed broadband networks. The worldwide interoperability for microwave access (WiMAX) is a wireless broadband technology. 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. This prototype has been implemented by using open source technologies and its signaling is orchestrated by a JAIN SLEE server. 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. 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. Currently, a significant research effort focuses on data transmission optimization and mobility support for multicast and broadcast services. WiMAX is a broadband wireless access technology which includes different quality of service levels. 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.
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