Eppy Yundra, Unit Three Kartini, I. Wayan Susila
The network based on IEEE 802.15.4 have several challenges such as how to allocate guaranteed time slot (GTS) properly and how to reduce go to next backoff stage. The coordinator node will allocate GTS size when there is request from node. The node will perform random backoff and then will detect clear channel assessment (CCA). The problem of those as following: first, when there is request from node to allocate GTS size, coordinator node will allocate slot for it, however, if size of slot allocation improperly will cause bandwidth utilization wasted and decrease of goodput, respectively. Second, when there is node detect CCA busy condition, the node will increase number of backoff and entering to next back of stage, however, it will cause more energy consumption. This article proposes a hybrid adjustment delay scheme and superframe duration scheme (H-ADEDUS) to improve performance IEEE 802.15.4. H-ADEDUS has proven can allocate GTS efficiently based on request from device node and adjust delay when detect channel is founded busy. The result of simulation and analytical model show that H-ADEDUS outperform to scheme 1, scheme 2 and scheme 3 in term of probability successful transmission, network goodput, bandwidth utilization and energy consumption, respectively. © School of Engineering, Taylor’s University.
Department of Electrical Engineering, Universitas Negeri Surabaya, Kampus Unesa Ketintang,Jalan Ketintang, Surabaya, 60231, Indonesia; Department of Mechanical Engineering, Universitas Negeri Surabaya, Kampus Unesa Ketintang, Jalan Ketintang, Surabaya, 60231, Indonesia
