Adaptive and Fair Deployment Approach to Balance Offload Traffic in Multi-UAV Cellular Networks

Chuan-Chi Lai, Bhola, Ang-Hsun Tsai, Li Chun Wang

Research output: Contribution to journalArticlepeer-review


Unmanned aerial vehicle-aided communication (UAB-BS) is a promising solution to establish rapid wireless connectivity in sudden/temporary crowded events because of its more flexibility and mobility features than conventional ground base station (GBS). Because of these benefits, UAV-BSs can easily be deployed at high altitudes to provide more line of sight (LoS) links than GBS. Therefore, users on the ground can obtain more reliable wireless channels. In practice, the mobile nature of the ground user can create uneven user density at different times and spaces. This phenomenon leads to unbalanced user associations among UAV-BSs and may cause frequent UAV-BS overload. We propose a three-dimensional adaptive and fair deployment approach to solve this problem. The proposed approach can jointly optimize the altitude and transmission power of UAV-BS to offload the traffic from overloaded UAV-BSs. The simulation results show that the network performance improves by 37.71% in total capacity, 37.48% in total energy efficiency and 16.12% in the Jain fairness index compared to the straightforward greedy approach.

Original languageEnglish
Pages (from-to)1-15
Number of pages15
JournalIEEE Transactions on Vehicular Technology
StateAccepted/In press - 2022


  • Adaptive systems
  • Aerospace electronics
  • Base stations
  • Cellular networks
  • energy efficiency
  • Interference
  • Jain fairness index
  • Quality of service
  • Three-dimensional displays
  • traffic offload
  • UAV base station


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