Research Article

Joint Load Balancing and Offloading Optimization in Multiple Parked Vehicle-Assisted Edge Computing

Table 1

Main parameters.

ParametersDescription

, , Task data size, task required computing resource, and the maximum allowable time delay of the task.
, The node selection variable and the workload ratio of the -th offloading task to the -th edge computing node.
, Wireless channel bandwidth and white Gaussian noise power.
, Uplink and downlink transmission power.
, The power gain between the -th requesting vehicle and RSU and the power gain between RSU and the -th PV.
, CPU computing power of the -th requesting vehicle and the max CPU computing power of the -th edge computing node.
, Uplink and downlink cost coefficient.
, Energy consumption per CPU cycle of requesting vehicle and edge computing nodes.
The maximum allowable computing resources occupancy rate of the edge computing nodes in a certain period of time.
The optimal strategy of the -th requesting vehicle.
Time span of the time period.
, Probability density function and accumulative distribution function of the PV parking durations .
, The probability value of the -th PV remaining parked at the execution time period of the -th task and accumulative parking durations of the -th PV.