Improving the medium access in highly mobile Wireless Sensor Networks
Improving the medium access in highly mobile Wireless Sensor Networks
复制标题
改善高度移动无线传感器网络中的介质访问
DOI：
10.1007/s11235-011-9565-6
复制
发表时间：
2011
影响因子：
2.5
通讯作者：
Thomas Noël
中科院分区：
文献类型：
--
作者：
R. Kuntz;J. Montavont;Thomas Noël
移动性最近被认为是一种提高无人值守无线传感器网络的感知覆盖和连通性的方法。然而，在这种动态拓扑中访问介质在移动的传感器上引起了多个问题。固定节点和移动的节点之间的同步问题可能会阻止后者成功地将数据发送到它们的对等节点。移动的节点在穿过拥塞区域时还可能遭受长的介质接入延迟。在这些情况下，当数据分组实际上在介质上发送时，预期的下一跳可能不再有效。在这篇文章中，我们提出了X-Machiavel协议，旨在解决这些问题。通过允许移动的节点占有预留的介质，它保证了它们将能够在拥塞的网络中在小的延迟内发送它们的数据，同时保持固定传感器的开销低。我们的建议也减轻了移动的传感器从维护下一跳的列表，依靠固定的传感器基础设施的路由操作。我们通过模拟证明了我们的建议相比，我们的贡献依赖的X-MAC协议的好处。X-Machiavel背后的原理可以与其他前导码采样协议相结合，以提高它们在移动的环境中的效率。
Mobility has recently been contemplated as a way to improve sensing coverage and connectivity in unattended Wireless Sensor Networks. However, accessing the medium in such dynamic topologies raises multiple problems on mobile sensors. Synchronization issues between fixed and mobile nodes may prevent the latter from successfully sending data to their peers. Mobile nodes can also suffer from long medium access delays when traveling through congested areas. In these circumstances, the expected next hop may not be valid anymore when the data packet is actually sent on the medium. In this article, we present the X-Machiavel protocol which aims at addressing these issues. By allowing mobile nodes to take possession of a reserved medium, it guarantees that they will be able to send their data in congested networks within a small delay, while keeping the overhead low for the fixed sensors. Our proposal also relieves the mobile sensors from maintaining a list of next hops by relying on the fixed sensors infrastructure for the routing operations. We demonstrate by simulation the benefits of our proposal compared to the X-MAC protocol on which our contribution relies. The principles behind X-Machiavel can be combined with other preamble sampling protocols in order to improve their efficiency in mobile environments.
影响因子：
35.6
作者：
Bachir, Abdelmalik;Dohler, Mischa;Leung, Kin K.
通讯作者：
Leung, Kin K.