摘要
提出了一种基于最大速率估计的自适应编码方法,该方法实现了单链路网络中高可靠的数据传输.利用单向链路中数据发送速率和丢包率之间的相关性,研究了在数据发送速率不超过最大速率的情况下冗余编码对丢包率的影响,即在低丢包率下采用基于ErasureCode算法的单向控制机制,并基于最大速率估计来调整编码策略,在传输报文间建立冗余校验,利用线路的最大安全速率传输冗余编码信息,将丢失的数据包尽可能高的冗余恢复出来.实验结果表明:该自适应编码方法能够在低丢包率的环境下进一步有效降低丢包率,较好地提高单向传输的容错性,实现单链路传输的可靠性.
An adaptive coding method based on the maximum transmission rate was proposed to achieve high reliability of data transmission in unidirectional link network.First the correlation between send rate and packet loss rate was utilized under unidirectional link,and then the influence of redundant code for packet loss rate was studied when sending rate shall not exceed the maximum rate.Namely one-way control mechanism was adopted based on ErasurseCode algorithm under low packet loss rate to adjust coding strategy based on maximum rate,and establish redundancy check between the transmissions of message.Using maximum safe rate of link to transfer redundancy coding information and get back the lost packets as high as possible.The experimental results show that the proposed adaptive coding method can effectively reduce the packet loss rate meanwhile guarantee low packet loss rate,and further improve the fault tolerance of one-way transmission,realize the high reliability of unidirectional data transmission.
作者
吴志刚
刘会
薛晨
Wu Zhigang Liu Hui Xue Chen(Institute of Network Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China National Computer Network and Information Security Management Center, Beijing 100876, China)
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第11期26-29,38,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家科技支撑计划资助项目(2012BAH46B02)
关键词
单向链路
最大速率
单向控制机制
自适应编码
容错性
unidirectional link
maximum rate
one-way control mechanism
adaptive coding
fault tolerance
