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| Collision avoidance as an essential use case for vehicular networks can effectively enhance the safety of vehicles. This paper addresses how to avoid collision between vehicles and vulnerable road users(VRU), i.e., pedestrians, cyclists or motorists equipped with smartphones. Due to the limited computation resource and processing capability of smartphones, mobile edge computing (MEC) is introduced. MEC is utilized to reduce the transmission delay and relieve the network congestion, by pushing computation resource and processing capability to network edge. In particular, this paper focuses on a collision avoidance scenario including an edge collision detector, multiple vehicles and VRUs. In addition, we propose a minimum bandwidth occupation algorithm for collision warning. By calculating the consumed bandwidth of two different candidate alerting methods, we are able to decide the most efficient way, which occupates minimum bandwidth, to avoid the colliison. |
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| Keywords:Vehicle-to-Everything; Collision Avoidance; Mobile Edge Computing; Vulnerable Road User; Bandwidth Occupation |
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