point out that every UAV can communicate with only one IoT product at any given time. Moreover, to enhance collaboration amongst a number of UAVs, any nth IoT product can be serviced by at most a single UAV concurrently, represented from the constraint ∑ m χ m n ( https://uav-survey-solutions-bd43211.mybjjblog.com/how-much-you-need-to-expect-you-ll-pay-for-a-good-uav-surveying-companies-bd-42805427