基于可变连接价格的TCP接入控制研究

TCP Admission Control of Dynamic Connection-oriented Pricing

本文面向有连接的弹性应用,探讨了基于可变连接价格的TCP接入控制问题。将该问题描述为追求连接阻塞率最小化和活动连接时长最大化的多目标优化问题,分别考察了在连接请求确定到达和随机到达时的连接价格确定问题。提出了在阻塞率不高于某一设定值的情况下,使得单位时间内期望活动连接时长最大化的连接价格调整算法,并给出了基于Socks代理协议的价格协商和接入控制实现方法。

Admission control and pricing for connection-oriented elastic traffic are concerned. TCP admission control is depicted as a multi-objective optimization problem with blocked ratio minimization and active connection duration maximization as objectives. Assuming the connection request arrivals are determinate and stochastic respectively, the methods on how to price TCP connections are discussed. Then a dynamic pricing algorithm is examined which approaches the maximum of active connection duration while assuring the blocked ratio at acceptable level. Furthermore a price negotiation scheme based on Socks protocol is presented which can bring the pricing algorithm into practical networks.