The Dynamic Source Routing protocol (DSR) is a simple and efficient routing protocol designed specifically for use in multi-hop wireless ad hoc networks of mobile nodes. DSR allows the network to be completely self-organizing and self-configuring, without the need for any existing network infrastructure or administration. The protocol is composed of the two main mechanisms of "Route Discovery" and "Route Maintenance", which work together to allow nodes to discover and maintain routes to arbitrary destinations in the ad hoc network. All aspects of the protocol operate entirely on demand, allowing the routing packet overhead of DSR to scale automatically to only what is needed to react to changes in the routes currently in use. The protocol allows multiple routes to any destination and allows each sender to select and control the routes used in routing its packets, for example, for use in load balancing or for increased robustness. Other advantages of the DSR protocol include easily guaranteed loop- free routing, operation in networks containing unidirectional links, use of only "soft state" in routing, and very rapid recovery when routes in the network change. The DSR protocol is designed mainly for mobile ad hoc networks of up to about two hundred nodes and is designed to work well even with very high rates of mobility. This document specifies the operation of the DSR protocol for routing unicast IPv4 packets.

DSR 协议的论文，别人写的，从同学那获取。

DSR路由协议 特色 DSR是一种典型的按需（按需）Ad Hoc路由协议，同时DSR使用源路由即每个分组对应显着型地包含了从源到达目的地目的完整的序列，使用源路由的任何中间节点都无需进行复杂的路由操作而只需根据分组标题的路由信息​​将分组转发到下一个路由器即可。 组成 DSR协议主要由两部分构成即路由发现和路由维护。 路由发现：当源路由器S要发送一个数据分组到目的节点D，但源异步并不知道到达目的路由器的路由信息​​时，源路由器就会发起一次路由发现过程。路由请求（路由请求）分组，当该请求分组到达目的节点，或者是到达某个中间中间且该节点具有到达目标路由的路由信息​​时，这些路由器就向源中继发送一个包含着S到D的完整路由信息的路由应答（路由回复）分组，源路由器S就会根据这些信息建立新的路由。 路由维护：由于网络中各子系统的移动性，网络拓扑随时会发生变化，一条路径中的某两个路由器可能会因距离相互之

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你还在为不会DSR而发愁吗？看了这个，保你学有所成！！！看了就知道

文章简要介绍自组网中常用的路由协议，利用网络仿真软件NS2对DSDV、DSR和AODV路由协议进行仿真，通过不同仿真场景计算出路由协议的第一个包收到时间、平均延时和包投递率。