实时响应物联网中基于查询的数据转发方案
李英龙;陈红;莫尚丰
【期刊名称】《计算机学报》 【年(卷),期】2012(035)003
【摘要】In many sensor network technologies involved Internet of Things (IoT), users need quick query response, e. G. , the drivers driving on the road check the real-time parking information nearby in a IoTs of intelligent traffic system. Designing a fast data forwarding scheme for such kind of IoTs as well as meeting the requirements (e. G. , energy efficiency) of sensor networks is a crucial and challenging issue. Existing real-time routing protocols of sensor networks do not achieve the desired realtime goal because they suffer from the key problems of extra overhead of void forwarding paths (cannot reach the destination, but have to backtrack) and time overhead of processing isolated nodes, as well as difficult to adapt to the network topological changes. Therefore, a new query-driven data forwarding scheme is proposed in this paper, which every node gets its fastest data forwarding paths (directed acyclic graphs) based on the query message flooded by the Sink. Moreover, hybrid link cost model is given trying to achieve local energy
balance
and
congestion
avoidance,
and
finally
the
corresponding greedy distributed data forwarding algorithm and its improved one are provided. Extensive simulations show the
实时响应物联网中基于查询的数据转发方案
