A Service Continuity Management Algorithm in LTE-V2X Assisted by MEC

The LTE-V2X technology supported by 3GPP has gradually become the international mainstream communication standard of internet of vehicles (IoV), which can provide mobile vehicle-mounted terminals with low delay, high coverage and high-capacity services. However, mobility management of IoV is still a huge challenge. In order to solve this problem, we deploying multi-access mobile edge computing (MEC) servers for LTE-V2X, and the collaborative timing management method of MEC service migration and handover (HO) is provided according to the deployment model, firstly. Secondly, the time to trigger (TTT) and hysteresis factor (Hys) are dynamically adjusted by fuzzy logic according to the driving speeds of the mobile vehicle-mounted terminals, which effectively controls the timing of HO and avoids the occurrence of ping-pong HO to a certain degree. Finally, the entropy weight method (EWM) and the grey relation analysis algorithm (GRA) are combined to make a HO decision, and the best target evolved node B (eNB) is selected for the HO, which further improves the success rate of the HO.