Figure 10From: Handoff management in communication-based train control networks using stream control transmission protocol and IEEE 802.11p WLANsStructure of the optimal policy. (The current path is M, which means the SA is currently communicating with AP M. The cubes represent the handoff policy: When the cube’s height is 1, the SA does not trigger a handoff; When the cube’s height is 3, the SA makes a handoff decision and begins to work in the multi-path mode.).Back to article page