The Design And Implementation Of Voice Transmission System Based On RTP/RTCP Protocol In Rviewer

In recent years, the industry of cloud computing develops rapidly. As one of the main research contents of cloud computing, VDI[1](Virtual Desktop Infrastructure) is also engaged in evolution and improvement. VDI evolved from the combination of the desktop virtualization and IAAS. Virtual desktop protocol[2] used in desktop virtualization is a key component to achieve desktop cloud. The main content of this thesis is to study the virtual desktop protocol. The research is focused on voice transmission of the virtual desktop protocol.The earlier virtual desktop protocol is primarily used to establish a connection between the local and remote machines through protocol to achieve the control and management of remote machines. As a result,the traditional remote desktop protocol can be used in the transmission of discrete media such as text transmission and image transmission. However,the protocol is not suitable for the transmission of audio, video and other high quality and real-time services, because these services are sensitive to delay and they need large amount of data during the transmission. There are also some shortcomings for the existing virtual desktop protocol supported audio transmission.Such as, audio transmission cannot good support bidirectional transmission. It’s critical for bandwidth and the number of connections is limited by a single audio source support etc. Considering the application requirements of remote desktop client named Rviewer in education cloud platform and the shortcomings of desktop virtualization audio and video transmissions, we develop a high-performance, low jitter, strong scalability,real-time audio transmission system. It supports multi-terminal access. The audio transmission system designed for the cloud terminal(thin client) provides simple and efficient audio transmission application solutions.In the last of my thesis,I conduct functional testing and performance testing on the system. I make a comparison with the Microsoft’s RPD protocol, Citrix’s ICA[9]protocol, VMware’s PCoIP protocol, RedHat’s Spice[8] protocol and VNC and show the corresponding results. The main contents of this thesis are as follows:1. Analysis of the shortcomings of traditional audio transmission, given suitable solutions for audio transmission platform. In this thesis, the design of the audio capture buffer, the design and coding of audio,and voice data transport protocols RTP/RTCP[16]and other aspects in the design of audio collection are improved and optimized.2. Describe the system requirements analysis of audio transmission system based on RTP/RTCP protocol, system technology solutions and development of systems in detail. This thesis gives a more flexible and scalable system architecture, the system is conducive to future upgrades and optimization.