Figure 6From: Handoff management in communication-based train control networks using stream control transmission protocol and IEEE 802.11p WLANsHandoff procedures under three policies. (When the current path is 1, the SA is communicating with AP M; When the current path is 2, the SA is communicating with AP M + 1; When the currently used path is 3, the SA is communicating with both AP M and AP M + 1.).Back to article page