|
| Notation | Description |
|
| L | The length of the selected road |
| The coverage range of the RSU |
| Set/number of RSUs |
| Set/number of vehicles |
| i,j | The vehicle index /the RSU index |
| The arrival rate of vehicles |
| Vehicle’s position/speed |
| Required computation resource/input data size/output data size/maximum tolerable delay of the computation task |
| The time available by the vehicle before leaving the communication range of RSU-- |
| The equivalent speed of vehicles |
| The available uplink/downlink transmission rate of vehicle-i |
| The number of vehicles offloads task to MEC server via RSU-j |
| The probability of vehicle-i connects to the RSU-j in a random time slot |
| The duration of a time slot |
| The propagation delay |
| The success transmission period between vehicle-i and RSU-j |
| The bandwidth of RSU-j |
| The transmission power of vehicle-i |
| The channel gain between vehicle-i and RSU-j |
| The uplink/downlink transmitting time |
| The two-way transmission time between vehicle and RSU |
| The binary offloading strategy of vehicle-i/vehicles |
| The task execution time locally/in the MEC server |
| Total time for processing task locally/in the MEC server |
| Computing resource of the vehicle/allocated to MEC-j/the MEC server |
| The cost of vehicle-i locally/in MEC processing/vehicle-i under different task offloading decisions |
| The penalty for offloading failure |
| The weighted parameters of delay and computation resource cost |
| The task’s actual tolerant delay |
| The unit cost of the computing resource of the MEC server |
|
