IoV low latency communication method, terminal and system

An Internet of Vehicles (IoV) low latency communication method, the IoV comprising a plurality of IoV terminals, access points, and a macro node, the access points and the plurality of IoV terminals forming access point groups, and each of the access point groups being respectively connected to the macro node through the access points, comprising:

• sending a service resource request to an access point by an IoV terminal that enters an access point group in a high-speed driving situation;
• receiving, by the access point, the service resource request and reporting a service type of the service resource request and a volume of a service resource requested to the macro node;
• collecting, by the macro node, statistics on service resource requests reported by the access point, sorting various service types on which statistics is collected in a descending order according to quantities of each service type requested by a user, selecting F service types having maximum demands, and sending a cache resource configuration command to access points in each access point group according to a computed volume of a resource periodically, and F being a positive integer;
• upon receipt of the cache resource configuration command from the macro node, each access point performing cache resource allocation for the F service types, allocateing a resource block having a predetermined size for each service type, and at the same time, releaseing a cache resource pre-scheduled in a previous cycle;
• detecting, by the access point, a volume of a service resource requested by the IoV terminal during a communication process;
• performing, by the macro node, global resource scheduling on the volume of the service resource requested if it is detected that the volume of the service resource requested by the IoV terminal is greater than a data block transmission threshold specified by the access point group;
• and performing, by the access point, internal resource scheduling on the volume of the service resource requested within the access point group if it is detected that the volume of the service resource requested by the IoV terminal is no greater than the data block transmission threshold specified by the access point group.