Mesh网络中两跳邻居地址借用策略

IEEE 802.15.5标准提供了mesh联网功能,它为节点绑定逻辑地址,因而具有不需要路由表进行路由的优点。在一个动态性很强的mesh网络中,节点加入或离开网络会造成孤儿节点问题,即新来节点因其父节点无剩余地址可分配导致其无法加入网络。提出了适用于mesh网络的两跳邻居节点地址借用策略以克服孤儿节点问题,提高节点加入成功率和地址利用率。理论分析和仿真表明,所提出的地址借用策略在节点加入成功率、地址利用率和能耗方面均优于已有地址分配方案。

Borrowing Address within Two-hop Neighbors in Mesh Network

IEEE 802.15.5 standard introduces mesh networking,which has the strength that routing is conducted without routing table by assigning logical addresses to nodes.In a dynamic mesh network,orphan node problem (ONP) exis-ts,i.e.,a newly coming node is unable to join the network as its parent node does not have an unused address for the new node.To overcome the ONP,an address borrowing scheme that allows a node to borrow an address from its two-hop neighbors,which is suitable for the mesh network,was presented in this paper so that the probability of successful joining (PSJ) the network and the ratio of the number of the used addresses to the total addresses are improved while the energy expended by borrowing address is reduced.Theoretical analysis and simulation results show the proposed scheme outperforms the existing address assigning schemes in terms of the PSJ,the ratio,and the energy consumption.