o0小惠惠0o
一、mesh网基本概念蜂窝网络的优势是可以保证连续覆盖，缺点是必须对新的网络进行规划，并且还需要在整个覆盖范围内同时部署所有的小区，意味着网络运营商需要更大的前期成本，还存在因障碍物遮盖不能覆盖的盲点区域。无线局域网通常覆盖是工作场所或家里这样的局部区域覆盖，一个设计目标是覆盖接入点周围半径100m左右的区域，接入点之间通过有线网络连接，无线局域网没有蜂窝系统那样的专用频谱，这导致无线局域网的设计需要容忍干扰，在极端情况下，如果发生拥塞，效率可能下降到零，这是任何豁免牌照系统无法避免的。无线局域网设计的主要目标是获取峰值速率，并假设峰值速率持续时间不会很长。无线局域网实现上比蜂窝网简单原因有二：（1）无线局域网没有小区之间的切换；(2)无线局域网仅仅在用户之间提供数据链路，而利用其它协议（e.g.IP TCP）建立路由和提供数据传输的可靠性。无线局域网的主要目的在于传输数据，而不是语音。mesh网的特点：1.没有主节点；2.它可以通过跨越一定数量的中间节点到大其它任何节点。mesh网如同一个蜘蛛网，和蜂窝网与无线局域网的架构有很大的区别，所有节点都是对等的，并且没有中心控制，因此，每个节点不仅是业务源节点或者目的节点，而且还是路由节点。Mesh网络结构大致可以分为三种：1.纯粹Mesh网络:Mesh网络是孤立的，所有业务都在Mesh网络之内，所有的业务都通过单一节点类型（即用户节点）中继。2.混合Mesh网络：一个具有层次结构节点类型的纯粹Mesh网，通过引入骨干路由以提高效率。有另一个网络叠加在Mesh网之上，并专门传输长距离业务。无线Mesh网络中具有层次体系的路由结构，可能通过额外的专用无线信道或者频道创建。3.接入Mesh：如同混合Mesh也具有层次结构的节点类型，但是相当大的额外业务来自于Mesh网络之外。层次路由网络也有到外部网络（如因特网）的网关。二、自组织纯粹Mesh网络特点自组织：无需规划，无法控制覆盖范围和干扰环境；基础设施：所提供功能都在Mesh网内，包括功率控制、路由、计费、管理、安全等。没有中心控制单元，没有安全和认证中心；移动性：节点可以自由移动，甚至消失，网络的连接是动态的；无线：为了支持移动和避免基础设施，无线是必须的；中继：所有节点可能需要中继其它节点信息，这将减少每个节点用户的可用带宽；路由：所有节点都要参与路由，可用主动维护路由表，或者按照需要创建路由，路由产生开销，这依赖于协议、业务和节点的移动性。多跳：中继和路由的必然结果，可以扩大覆盖范围，特别是在传播环境复杂的场景
没腰的麦兜
Firstly, this paper summarizes the general research methodology of wireless mesh network routing protocol. It analyzes and summarizes each stage of the method and the result. It also analyzes characteristics of typical OSPF routing protocol and Ad hoc routing protocol.Secondly, this paper designs a routing protocol based on the virtual hierarchical wireless mesh network architecture. The main features are: divide the proximal nodes into small quarters (including mesh client and router). All the nodes in that quarter virtually form a new code, namely a virtual code. Each of the nodes in a virtual node can communicate directly, so as to the nodes in a neighboring quarter. And nodes in different quarters can realize multi-hop communication.Finally, this paper proposes a hybrid based on the link-state and geographic information. It incorporates location-based and link-state routing protocols to improve the adapt ability and information route of the wireless network. It also improves the fault tolerance, load balancing and QoS ability of the wireless mesh network.
未暖rabbit
首先本文总结了无线Mesh网络路由协议的一般性研究路线，并按该研究路线的各阶段分析和总结了相关的研究方法与研究成果；分析了经典的OSPF路由协议及Ad hoc路由协议的特点。This paper firstly summarizes the general study path of routing protocol used in wireless Mesh networks and provides the relevant research method and results according to the analyses and summations of the various segments of the studied path, as well as analyzes the characteristic features of the classic OSPF routing protocol and Ad hoc routing protocol. 其次，本文设计的路由协议基于虚拟层次化无线Mesh网络架构。该架构的主要特征为：将地理位置相近的节点（包括Mesh客户端和Mesh路由器）划分成小区，小区内的所有节点虚拟成一个“节点”，称为虚拟节点，每个虚拟节点内部的节点可以直接通信，邻居小区内的节点也可以直接通信，而不同小区内节点间实现多跳通信。Secondly, the routing protocol designed by this paper is based on the hierarchical virtual wireless Mesh network architecture. The main features of this architecture are: grouping all geographically close nodes into different plots (including the client and Mesh routers), assume all the nodes in each plot as a virtual node; and all the nodes within the virtual node can communicate directly, nodes within the neighboring plot can also have direct communication, and multihop communications can be achieved between the nodes of different plots. 最后，提出了一种基于链路状态和地理位置信息的混合式路由，其中融合基于位置和链路状态的路由协议，提高了对无线网络中的信道和业务的适配能力，提高了无线mesh网络的容错、负载均衡和业务的QoS性能。Finally, a hybrid router based on link state and geographical information is proposed; it integrates a routing protocol based on location and link state which enhances the adaptive ability of channels and services of wireless network, as well as the performance of Mesh network in terms of fault tolerance, load balancing and the QoS operation.【英语牛人团】
