In position-based routing algorithms, the nodes use the geographical information to make routing decisions. Recent research in this field addresses such routing algorithms in two-dimensional (2D) space. However, in real applications, the nodes may be distributed in three-dimensional (3D) space. Transition from 2D to 3D is not always easy, since many problems in 3D are significantly harder than their 2D counterparts. This book focuses on providing reliable and efficient position-based routing algorithms with the associated pre-processing algorithms for various 3D ad hoc networks. The first...