| 摘要: | 近年來無線網路蓬勃發展，IEEE 802.11ax把目標放在提升密集無線區域網路環境下的傳輸效能。為此TGax的幾位成員於2015年發布了一項動態靈敏度控制機制(Dynamic Sensitivity Control, DSC)來透過調整載波感測靈敏度以達到避開大量的隱藏節點提升傳輸效能。但是此動態靈敏度控制機制存在著一些問題。像是在運作動態靈敏度控制機制時容易形成過多的隱藏節點導致干擾；另外就是此機制並沒有考慮到結合頻道捆束機制(Channel Bonding)時所產生的問題。因此本論文設計了頻道捆束之碰撞避免動態靈敏度控制機制來解決上述的問題。之後再以NS3模擬器來模擬協定的運作情況。
Wireless networks have been deployed widely, the main topic of next generation IEEE802.11ax is to increase throughput on dense Wireless Local Area Networks. Some of IEEE 802.11ax Task Group (TGax) members have been actively involved in the design of Clear Channel Access (CCA) modification schemes, where Dynamic Sensitivity Control (DSC) algorithm has been proposed as one of the key innovative technologies to increase the spectral reuse. However, DSC scheme has drawbacks: it doesn’t consider about Channel Bonding and increase frame collisions as well as hidden node count. In this paper, we propose the DSC MAC protocol along with Channel Bonding and power control. Final this protocol will be simulated and compared with other DSC MAC protocols by NS3 Simulator. |