Multicast Gain for IPTV Transmission in WiMAX Multi-hop Relay Networks

Energy-efficient and reliable multicasting for WiMAX multi-hop relay networks

Orthogonal frequency division multiplexing (OFDM)-based wireless transmission technologies such as WiMAX are now widely deployed, and the frame check sequence (FCS) scheme is used to enhance the reliability of OFDM-based systems. As the padding overhead cannot be completely avoided in such systems when variable-length medium access control (MAC) frames are encapsulated, the authors propose a no...

Frame structure for Mobile multi-hop relay (MMR) WiMAX networks

Mobile Multi-hop Relay (MMR) WiMAX network uses Relay stations (RSs) to extend the cell coverage, and enhances the link quality and the throughput. In MMR WiMAX networks, the number of hops between the Subscriber stations (SSs) and the Base station (BS) is allowed to be more than two hops when Non transparent RS (NT-RS) is used. However, this requires modification to the frame structure of NT-R...

Relay Station Selection Algorithm and Scheduling Algorithm for IPTV based Services in IEEE 802.16j MMR WiMAX Networks

A Novel Multicast Beneficiary in Ieee 802.16j Wimax Relay Networks

In IEEE 802.16j based wimax multihop-relay network, in addition to a base station, multiple relay stations are used for enhancing the throughput, and improving the coverage distance of the base station. Multicasting is a more efficient method of supporting group communication than unicasting, as it allows transmission and routing of packets to multiple destinations using fewer network resources...

A Study on Resource Allocation Algorithms in Wireless Relay Networks

In this paper, the multicast routing problem in wireless relay networks is considered. The resource allocation problem in IEEE 802. 16j WIMAX Networks is discussed. The relay stations are used to improve the transmission quality in WIMAX networks. Most existing approaches try to reduce the energy consumption of a multicast tree. In contrast, the maximization problem to increase the number of re...