Mobile Ad hoc Network (MANET) is a wireless network consisting of mobile devices (laptops, smart phones, etc.) that move and communicate with each other without the use of any existing network infrastructure or centra...Mobile Ad hoc Network (MANET) is a wireless network consisting of mobile devices (laptops, smart phones, etc.) that move and communicate with each other without the use of any existing network infrastructure or centralized server to avoid collisions which have negative effects on the performance of the network. Access to the shared media is controlled by a Backoff algorithm that is a part of the Media Access Protocol. In this paper, we improve the History Based Probabilistic Backoff (HPPB) algorithm by modifying the increment/decrement behavior of the Contention Window to introduce History Based Increment Backoff (HBIB) algorithm which outperforms HBPB in terms of throughput and end-to-end delay with various numbers of nodes and different traffic loads.展开更多
为解决现有太赫兹无线网络定向MAC协议存在的节点间波束成形训练开销大、定向Beacon子时段时隙资源利用不足的问题,提出一种高效的太赫兹无线个域网定向MAC协议ED-MAC(Efficient Directional MAC protocol).ED-MAC协议通过采用全网波束...为解决现有太赫兹无线网络定向MAC协议存在的节点间波束成形训练开销大、定向Beacon子时段时隙资源利用不足的问题,提出一种高效的太赫兹无线个域网定向MAC协议ED-MAC(Efficient Directional MAC protocol).ED-MAC协议通过采用全网波束成形训练机制和机会性复用定向Beacon子时段机制,能够有效降低节点间波束成形训练开销,提升数据帧传输成功率.仿真结果表明:相较于IEEE 802.15.3c、IEEE 802.11ad和ENLBT-MAC协议,ED-MAC的波束成形开销减小了约51.48%,M AC层吞吐量增加了约2.04%.展开更多
文摘Mobile Ad hoc Network (MANET) is a wireless network consisting of mobile devices (laptops, smart phones, etc.) that move and communicate with each other without the use of any existing network infrastructure or centralized server to avoid collisions which have negative effects on the performance of the network. Access to the shared media is controlled by a Backoff algorithm that is a part of the Media Access Protocol. In this paper, we improve the History Based Probabilistic Backoff (HPPB) algorithm by modifying the increment/decrement behavior of the Contention Window to introduce History Based Increment Backoff (HBIB) algorithm which outperforms HBPB in terms of throughput and end-to-end delay with various numbers of nodes and different traffic loads.
