Performance Analysis of Reliable Dynamic Buffer UDP over Wireless Networks

Various user datagram protocol (UDP) reliability improvement schemes have been proposed to guarantee the reliability of UDP packets over complex wireless networks. Through adding ACK and Retransmission mechanism to UDP indeed guarantees the reliability of UDP. However, adding ACK and retransmission will decrease UDP performance to some extent. In this paper, we propose a reliable dynamic buffer UDP scheme to improve the reliable UDP performance in wireless network. In RDBUDP, the sender will fill buffer size field in the packet header with expected value of buffer size, and then the receiver will allocate corresponding buffer size according to this value in Buffer Size field to store potential disordered packets. Simulation results show that RDBUDP outperforms than Reliable UDP in wireless network in the aspect of network throughput and delay.