终端性能自适应传输协议

随着各种应用的需求和光网络技术的飞速发展,互联网领域出现了高速长距离光网络.最新研究发现,由于当前各种科学应用的迫切需求以及网络带宽的迅速提高,网络速率已经远远超出了终端系统的处理能力.在高速长距离光网络环境中,拥塞已经从网络转移到了终端,终端系统的处理能力逐渐成为传输速率的瓶颈.因此,各种终端性能自适应的高速传输协议应运而生.基于这一类协议改进的不同思路,对它们进行了分类描述,重点分析了这些协议的拥塞检测和速率适配机制以及各自的优缺点,在归纳和总结目前研究中仍然存在的开放性问题的同时,提出了进一步的研究方向.

End-System Performance Aware Transport Protocols

With the rapid development of numerous applications and optical network, fast long distance optical network has emerged in the Internet field. Some novel studies indicated that, due to the exigent requirement of scientific applications and the rapid improvement of network bandwidth, the network transfer speed has outstripped the processing speed of the end systems. Therefore, the congestion has been pushed into the end nodes and the processing ability of the end system has become a bottleneck in such a network. Thus several novel end-system performance aware transport protocols have been proposed. The authors categorize and describe all these protocols, and emphatically analyze that congestion detection, rate adaption mechanisms, advantages and disadvantages of all kinds of schemes. Subsequently, the current existing open issues are summarized and some further interesting directions are pointed out.