Abstract: A routing algorithm (AODVLPETT ) which is based on the location prediction was presented. Route selection was made by calculating the ETX(expected transmission count) value and bandwidth of links between nodes in the communication range. The following node location was predicted using the grey prediction model.Whether or not to use the ETT(expected transmission time) routing metric depended on whether the distance between the adjacent nodes was less than the communication radius. The QualNet simulation results show that， compared with the AODV， the overall performance of the network was improved with the AODVLPETT， what′s more， the network throughput and packet delivery rate were also improved. In addition， the average endtoend delay and average jitter frequency were both reduced.

Key words: Ad hoc network, route, grey prediction, ETT(expected transmission time) metric, location prediction