Performance of a Beacon Enabled IEEE 802.15.4 Cluster with Downlink and Uplink Traffic
IEEE Transactions on Parallel and Distributed Systems
Analysis of the contention access period of IEEE 802.15.4 MAC
ACM Transactions on Sensor Networks (TOSN)
Analysis and compare of slotted and unslotted CSMA in IEEE 802.15.4
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
QoS analysis of medium access control in LR-WPANs under bursty error channels
Future Generation Computer Systems
Transmission radius control in wireless ad hoc networks with smart antennas
IEEE Transactions on Communications
Effects of access phases lengths on performance of IEEE 802.15.6 CSMA/CA
Computer Networks: The International Journal of Computer and Telecommunications Networking
On Analysis of the Contention Access Period of IEEE 802.15.4 MAC and its Improvement
Wireless Personal Communications: An International Journal
Knowledge-based design space exploration of wireless sensor networks
Proceedings of the eighth IEEE/ACM/IFIP international conference on Hardware/software codesign and system synthesis
Performance Analysis of IEEE 802.15.4 MAC Protocol with ACK Frame Transmission
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
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In this paper a Markov chain based analytical model is proposed to evaluate the slotted CSMA/CA algorithm specified in the MAC layer of IEEE 802.15.4 standard. The analytical model consists of two two-dimensional Markov chains, used to model the state transition of an 802.15.4 device, during the periods of a transmission and between two consecutive frame transmissions, respectively. By introducing the two Markov chains a small number of Markov states are required and the scalability of the analytical model is improved. The analytical model is used to investigate the impact of the CSMA/CA parameters, the number of contending devices, and the data frame size on the network performance in terms of throughput and energy efficiency. It is shown by simulations that the proposed analytical model can accurately predict the performance of slotted CSMA/CA algorithm for uplink, downlink and bi-direction traffic, with both acknowledgement and non-acknowledgement modes.