Abstract: In order to solve the problem that the existing scheduling algorithm can not adapt to the high retransmission probability caused by the rapid decline of the air port signal quality in the handover scenario, a new handover command transmission scheme optimized for the handover scenario applied to the B-TrunC is proposed to reduce the bit error rate of handover command. In the new transmission scheme, the PDCP( Packet Data Convergence Protoco1) module identifies the handover command sent to the terminal, and distinguishes the handover command from the ordinary signaling and data transmission processing, using the specified low-key mode and coding rate transmission. The simulation results of switching scene show that the new transmission scheme can effectively reduce the re-transmission and failure probability of handover command, and significantly improve the handover delay performance of B-TrunC.

Key words: B-TrunC, handover command, distinguish, retransmission