基于3G网络的无线视频传输系统设计

he wireless video transmission system over 3G network is designed and implemented. The proposed reliable transmission scheme is based on user datagram protocol (UDP) and some Quality-of-Service (QoS) guarantee mechanisms. This scheme uses UDP protocol to implement the real-time transmission and retransmission of lost packets/adaptive rate adjusting are explored for proper QoS. When the uplink transmission rate is low, we reduce the packet loss rate by using adaptive rate adjusting and we guarantee the reliability of data transmission by using packet retransmission. The experiments show that the system can achieve real-time video transmission in wireless environment, and can effectively achieve the quality of service in the time variant environment.