摘要
传统无线网络中,传输可靠性控制主要通过数据链路层的ARQ重传机制以及传输层TCP实现,但二者对于可靠性控制是分开实现的,因此这会导致当前节点的缓存占用率很大。所以提出将Semi-TCP与ARQ协议相结合,当前节点出现错误时,直接从传输层Semi-TCP进行重传,这样就能有效缓解当前节点缓存占用率大的问题,并且通过改变ARQ的纠错能力来平衡该方案可能导致的传输时延大、信道的利用率低等问题。基于现有实际平台n RF51822开发板联合实现Semi-TCP与ARQ协议,并研究测试该方案在实际平台下的功能与性能。
In traditional wireless networks, the transmission reliability control is mainly implemented through the ARQ retransmission mechanism at the data link layer and the TCP at the transport layer, but the two are separately implemented for reliability control. Therefore, the current node cache occupancy rate is very high. Therefore, proposes to combine Semi-TCP with ARQ protocol. When an error occurs on the current node, the semi-TCP is retransmitted directly from the transport layer Semi-TCP. This effectively alleviates the problem of large buffer occupancy in the current node and changes the ARQ error correction, the ability to balance the transmission delay may lead to the program,the channel utilization is low and so on. Realizes the Semi-TCP and ARQ protocols jointly based on the existing actual platform n RF51822 development board, studies and tests the function and performance of the scheme under the actual platform.
作者
张绍凤
罗佳伟
姜胜明
ZHANG Shao-feng;LUO Jia-wei;JIANG Sheng-ming(College of Information Engineering,Shanghai Maritime University,Shanghai 201306)
出处
《现代计算机》
2018年第11期72-75,共4页
Modern Computer
基金
国家自然科学基金(No.U1701265)
