Joint Optimization of Offloading and Resource Allocation for SDN-Enabled IoV

Table 1

Summary and comparison of the most relevant references.

Work	MEC/fog	User	Load balancing	Partial offloading	Resource allocation by computing nodes	Optimizing goals
Du et al. [10]	Multiple	Multiple	Yes	—	Yes	Minimize the total energy consumption of the system with delay constraints.
Zhang et al. [21]	Multiple	Multiple	—	—	—	Minimize the total energy consumption of the system with delay constraints.
Wang et al. [22]	Single	Multiple	—	—	Yes	Minimize the total energy consumption
Zhou et al. [17]	Single	Multiple	—	—	Yes	Maximize the calculation rate.
Xing et al. [18]	Multiple	Single	—	—	—	Minimize the total delay of the system with energy constraints.
Tran and Pompili [19]	Multiple	Multiple	—	—	Yes	Minimize the total energy consumption and the delay of the system.
Zhou et al. [20]	Single	Multiple	—	Yes	Yes	Minimize the maximal task completion time.
Chen et al. [23]	Multiple	Multiple	—	Yes	—	Minimize the total energy consumption of the system with delay and energy consumption constraints.
Chen et al. [24]	Multiple	Multiple	Yes	Yes	—	Minimize the competition latency of the task with maximum delay
Wang and Chen [25]	Multiple	Multiple	Yes	—	Yes	Minimize the competition latency with energy consumption constraints.
Yadav et al. [26]	Multiple	Multiple	Yes	—	Yes	Minimize the energy consumption and delay in vehicular fog computing.
Yadav et al. [27]	Multiple	Multiple	Yes	—	—	Minimize the total energy consumption of the system with delay constraints.
This work	Multiple	Multiple	Yes	Yes	Yes	Minimize the average delay for SDN-enabled IoV system.