Fig. 4

The total HO and migration signaling. This is the total handover (HO) and migration signaling based on dynamic service migration with the CMVAM. In the procedure, handover decision and some related configuration work are performed by the MEC server instead of the involved UE or BSs (as LTE generally does). The advantage of this approach is to avoid the redundant signaling interaction between the UE and the BSs, hence the handover latency is effectively reduced. This is the advantage of MEC, which can execute and migrate services with lower latency, while the estimated mean value of such latency in the existing LTE system is 12 ms (for contention-free access)