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This paper presents the design and performance evaluation of an integrated hybrid MAC and topology control scheme (abbreviated IMTC) for machine-to-machine (M2M) area networks that require comparatively the high data rate communications. In order to maximize the network performance, IMTC is designed with a cross-layer concept of MAC and network layers, which provides the multi-channel TDMA scheduling...
A significant challenge in wireless sensor networks is the transmission of data from a large number of nodes to a central collection point. This is commonly called converge-cast communication. At present, the IEEE 802.15.4 and ZigBee standards are widely used in the design of wireless sensor networks. The latter standard defines a methodology for converge-cast communication in tree-based network topologies...
We investigate the performance of IEEE 802.15.4 MAC (Medium Access Control) sublayer in beacon-enabled tree-topology Wireless Sensor Networks (WSNs). To our knowledge, current literature has mostly focused on relatively simpler star topology or non-beacon-enabled peer-to-peer networks. In our work, we first respectively evaluate the impact of different traffic loads from the source nodes in each depth...
This paper studies the MAC layer performance in demanding wireless sensor networks. The requirements for wireless MAC are discussed based on a prominent CSMA-based MAC protocol evaluation varying critical network parameters. The objective is to investigate the current radio access technologies suitability for wireless sensor networked applications. The channel access mechanisms are analyzed in more...
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