Since the body movement is quite different from other kinds of motion, dynamic topology changes of WBAN are also very different from other WSNs.
由于人体的运动有着不同于其他事物运动的规律，无线体域网的动态拓扑变化必然与其他无线传感器网络拓扑变化有很大不同。
The movements of nodes in the networks lead to dynamic changes of the networks topology.
网内节点的随机移动将会导致网络拓扑的动态变化。
As dynamic changes of topology, position-based routing algorithm and security routing are focuses and key points in this field.
由于拓扑结构的动态变化，位置路由算法和安全路由是其研究的热点和重点。
Referred to the Ball-and-String Model and united with the BS model SPT dynamic algorithm, a full dynamic SPT algorithm is worked out which can update a SPT after topology changes happened.
因此，借鉴球绳模型的相关思想，提出了一种在图的拓扑发生变化后对SPT进行动态更新的解决方案，并结合球绳模型SPT动态算法，完成了一种基于球绳模型的SPT完全动态算法。
Referred to the Ball-and-String Model and united with the BS model SPT dynamic algorithm, a full dynamic SPT algorithm is worked out which can update a SPT after topology changes happened.
因此，借鉴球绳模型的相关思想，提出了一种在图的拓扑发生变化后对SPT进行动态更新的解决方案，并结合球绳模型SPT动态算法，完成了一种基于球绳模型的SPT完全动态算法。
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