TBMC:一种基于多探测器协同的DTNs目标追踪策略

TBMC:a tracking strategy based on multi-detector collaborating in DTNs

延迟容忍网络中的目标追踪问题一直被广泛关注,目前的相关策略主要围绕单探测器追踪单个目标问题。有些搜索策略利用节点相遇的可能性,有些利用节点的地理位置信息,有些采用更加新颖的方法,比如利用目标节点留下的移动方位信息和时间。这些策略都直接或者间接地利用了目标节点的信息进行目标搜索,但是普遍不高的成功率使得这些搜索策略应用范围受到一定限制。设计了一套基于多探测器协同的分布式目标追踪策略,通过远距离协同探测机制DTRs与直接协同机制TRs进行多探测器协同追踪,有效避免探测冲突与冗余步骤,提高追踪效率。理论分析与实验表明,该策略相比传统策略能有效减少追踪步数,提高目标追踪成功率。

Target tracking problem in DTN networks is a widespread concern, however, the current strategies mainly focus on a single detector tracking a single destination. Some strategies use the possi- bility that nodes encounter, some take advantage of the location information of nodes, and some adopt more innovative tools, such as the mobile location information and the time left by the target node. These policies make a direct or indirect use of the information of the destination node, however, the general not very high success rate makes their applications a subject to certain restrictions. We therefore present a distributed target tracking strategy based on multi-detector collaborating named TMBC, which achieves multi-detector collaborative tracking by the remote detection mechanisms DTRs and the close cooperative data exchange mechanism TRs. It can avoid conflict and redundancy detection to improve tracking efficiency. Theoretical analysis and experimental results verify that the proposal can effectively reduce the tracking steps to improve the success rate in comparison with the traditional methods.