Manhattan mobility model

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本文介绍了曼哈顿移动模型，一种适用于城市区域车辆自组织网络（VANET）的移动性模型。该模型利用网格道路拓扑，指导车辆选择正确的路径，并提供安全和舒适。在城市地图上，移动节点沿水平或垂直方向移动，在每个交叉口，车辆以概率的方式决定直行、左转或右转。

转自： http://en.wikipedia.org/wiki/Manhattan_mobility_model

There are various mobility models in vehicular ad-hoc networks (VANET). These mobility models guide the driver of the vehicle in taking the right path, also provides safety and comfort. One such mobility model is the Manhattan mobility model. The Manhattan mobility model uses a grid road topology. This mobility model was mainly proposed for the movement in urban area, where the streets are in an organized manner.

In this mobility model, the mobile nodes move in horizontal or vertical direction on an urban map. The Manhattan model employs a probabilistic approach in the selection of nodes movements, since, at each intersection, a vehicle chooses to keep moving in the same direction. The probability of going straight is 0.5 and taking a left or right is 0.25 each.

From the above discussion, it is very clear that this model is not suitable for highway systems. Although this model provides flexibility for the nodes to change the direction, it imposes geographic restrictions on node mobility.

Important Characteristics of Manhattan Mobility model:

The mobile node is allowed to move along the grid of horizontal and vertical streets on the map.
At an intersection of a horizontal and a vertical street, the mobile node can turn left, right or go straight with certain probability.
Except the above difference, the inter-node and intra-node relationships involved in the Manhattan model are the same as in the Freeway model.