As the widespread employment of firewalls on the Internet, user datagram protocol（UDP） based voice over Internet protocol（Vo IP） system will be unable to transmit voice data. This paper proposed a novel method to ...As the widespread employment of firewalls on the Internet, user datagram protocol（UDP） based voice over Internet protocol（Vo IP） system will be unable to transmit voice data. This paper proposed a novel method to transmit voice data based on transmission control protocol（TCP）. The method adopts a disorder TCP transmission strategy, which allows discontinuous data packets in TCP queues read by application layer directly without waiting for the retransmission of lost data packets. A byte stream data boundary identification algorithm based on consistent overhead byte stuffing algorithm is designed to efficiently identify complete voice data packets from disordered TCP packets arrived so as to transmit the data to the audio processing module timely. Then, by implementing the prototype system and testing, we verified that the proposed algorithm can solve the high time delay, jitter and discontinuity problems in standard TCP protocol when transmitting voice data packets, which caused by its error control and retransmission mechanism. We proved that the method proposed in this paper is effective and practical.展开更多
基金supported by the National Natural Science Foundation of China: Research on Differentially Private Frequent Pattern Miningthe National Natural Science Foundation of China: Research on Optical Transport Network Integrated Protection Strategy and Method for High-Speed Railway
文摘As the widespread employment of firewalls on the Internet, user datagram protocol（UDP） based voice over Internet protocol（Vo IP） system will be unable to transmit voice data. This paper proposed a novel method to transmit voice data based on transmission control protocol（TCP）. The method adopts a disorder TCP transmission strategy, which allows discontinuous data packets in TCP queues read by application layer directly without waiting for the retransmission of lost data packets. A byte stream data boundary identification algorithm based on consistent overhead byte stuffing algorithm is designed to efficiently identify complete voice data packets from disordered TCP packets arrived so as to transmit the data to the audio processing module timely. Then, by implementing the prototype system and testing, we verified that the proposed algorithm can solve the high time delay, jitter and discontinuity problems in standard TCP protocol when transmitting voice data packets, which caused by its error control and retransmission mechanism. We proved that the method proposed in this paper is effective and practical.
