Abstract: It is of signifcant importance to further improve the channel switching performances of high-speed railway. In this paper, a new long term evolution for railway (LTE-R) switch algorithm for high-speed train is proposed based on the vehicle-mounted database and the signal power measurement. The comparison result between the information of eNodeB stations(BS)along the railway and the real-time measurement is used for switching trigger judgment of database. The simulation result shows that the proposed algorithm can achieve the fast reconnection after interruption and switch locking. The switching trigger efciency ratio of the proposed algorithm is 43.7% higher than that of the conventional algorithm on several key points of overlap region. And the handover success rate reaches as high as 0.995. The cooperative triggering algorithm is promising for extensive applications in the high-speed railway network LTE-R.

Key words: high-speed railway communication, switch algorithm, long term evolution for railway (LTE-R), handover success probability, database