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A congestion avoidance mechanism in multimedia transmission over MANET using SCTP multi-streaming

机译：使用SCTP多流动的多媒体传输中多媒体传输的拥塞避免机制

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摘要

Congestion is a challenging problem in Mobile Ad hoc Networks (MANETs) because of resource constraints, and dynamic routing. Congestion control is a big concern in achieving fairness between optimal network resource utilization and end-to-end flow control. In MANETs, with shared resources, when multiple senders contend for the same link bandwidth, data rate by each sender must be adjusted to avoid network overload which causes Quality of Service compromises. Strict ordering of data transmission in Transmission Control Protocol (TCP) causes poorer performance during data transmission in MANETs. Unlike TCP, Stream Control Transmission Protocol (SCTP) has a built-in multi-streaming feature to alleviate this issue caused by strict data ordering when using a single data stream within a transport connection. In this paper, we propose a Congestion Avoidance Mechanism over MANET routing based on Data Priority and Streaming Delay Weights (SDWs) which also utilizes SCTP multi-streaming (namely CAM-SCTP). Our proposal implements a Priority Manager (PM) to effectively select a stream to transmit data based on the data priority and by dynamically computing an SDW value per node. Experimental evaluation of the CAM-SCTP is performed for three different data types. The results show improvement in throughput for all data types while maintaining lower jitter, loss, and overhead.
机译：由于资源限制，并且动态路由，拥塞是移动临时网络（MANET）中有挑战性的问题。拥塞控制是实现最优网络资源利用率和端到端流量控制之间的公平性的重要关注。在船只中，通过共享资源，当多个发件人争取相同的链路带宽时，必须调整每个发件人的数据速率以避免网络过载，这导致服务质量妥协。在传输控制协议（TCP）中严格的数据传输顺序导致船只数据传输期间的性能较差。与TCP不同，Stream Control传输协议（SCTP）具有内置的多流特征，以减轻在运输连接中使用单个数据流时严格的数据排序引起的此问题。在本文中，我们提出了一种基于数据优先级和流延迟权重（SDW）的枪门路由的拥塞避免机制，其还利用SCTP多流（即CAM-SCTP）。我们的提议实现优先级管理器（PM），以有效地选择基于数据优先级的数据来传输数据，并且通过每个节点动态计算SDW值。对CAM-SCTP的实验评估用于三种不同的数据类型。结果显示所有数据类型的吞吐量的提高，同时保持较低的抖动，损耗和开销。

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