论文部分内容阅读
移动自组网是一种自治的、无需网络基础设施支持的、多跳传输的无线网络,具有非常广泛的应用前景。自组网即可以构成独立子网也可以与Internet互联,所以移动主机必须具有自动分配唯一的全球有效IPv6地址的能力。关于IP地址的自动分配已经有了一些算法,但大多数是采用在全网内进行泛洪广播来检测地址的重复,这将带来很大的开销。文中我们提出了一种IPv6地址分配协议,利用从GPS获取的节点地理位置信息和时间信息作为IPv6地址中接口标识符(InterfaceID)的唯一性参数,来提高选定的IPv6地址的唯一性,从而省去不必要的StrongDAD开销。重复地址可以通过监测邻居节点的数据包来检测到,并在必要时发送一跳的AERR消息来进行地址的重新分配,从而将地址分配的控制开销大大降低,并且将地址分配延迟将到最低。该协议被命名为OneHopWeakDAD地址自动分配协议。
Mobile ad hoc network is an autonomous, without the support of network infrastructure, multi-hop wireless network transmission, has a very wide range of applications. Since ad hoc networks can form separate subnets as well as the Internet, mobile hosts must have the ability to automatically assign a unique, globally valid IPv6 address. There are already some algorithms for the automatic allocation of IP addresses, but most of them involve flooding broadcasts across the entire network to detect duplicate addresses, which can introduce significant overhead. In this paper, we propose an IPv6 address allocation protocol that uses the node’s geographical location information and time information obtained from GPS as the uniqueness parameter of InterfaceID in IPv6 address to improve the uniqueness of the selected IPv6 address Eliminate unnecessary StrongDAD overhead. Duplicate addresses can be detected by monitoring the packets of neighbor nodes and sending a hopped AERR message as necessary to reallocate addresses, greatly reducing the control overhead of address allocation and minimizing address allocation delays. The agreement was named OneHopWeakDAD address automatic allocation agreement.