Delay Minimization for BAC-NOMA Offloading in UAV Networks
The rapid deployment and enhanced communication capabilities of unmanned aerial vehicles (UAVs) have enabled numerous real-time sensing applications. These scenarios often necessitate task offloading and execution under stringent transmission delay constraints, particularly for time-critical applica...
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2024-12-01
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| author | Haodong Li Zhengkai Yin Changsheng Chen |
| author_facet | Haodong Li Zhengkai Yin Changsheng Chen |
| author_sort | Haodong Li |
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| description | The rapid deployment and enhanced communication capabilities of unmanned aerial vehicles (UAVs) have enabled numerous real-time sensing applications. These scenarios often necessitate task offloading and execution under stringent transmission delay constraints, particularly for time-critical applications such as disaster rescue and environmental monitoring. This paper investigates the improvement of MEC-based task offloading services in energy-constrained UAV networks using backscatter communication (BackCom) with non-orthogonal multiple access (BAC-NOMA). The proposed BAC-NOMA protocol allows uplink UAVs to utilize downlink signals for backscattering tasks instead of transmitting through uplink NOMA. A resource allocation problem is formulated, aimed at minimizing offloading delays for uplink users. By converting the initially non-convex problem into a convex one, an iterative algorithm is developed to solve it. Simulation results demonstrate that the proposed protocol significantly reduces offloading delays relative to existing benchmarks. |
| format | Article |
| id | doaj-art-cb70713aedfc4490b7e044c0439805dc |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Sensors |
| spelling | doaj-art-cb70713aedfc4490b7e044c0439805dc2025-01-10T13:20:49ZengMDPI AGSensors1424-82202024-12-012518410.3390/s25010084Delay Minimization for BAC-NOMA Offloading in UAV NetworksHaodong Li0Zhengkai Yin1Changsheng Chen2AVIC Aeronautics Computing Technology Research Institute, Xi’an 710069, ChinaShenzhen Research Institute of Northwestem Polytechnical University, Shenzhen 518057, ChinaAVIC Aeronautics Computing Technology Research Institute, Xi’an 710069, ChinaThe rapid deployment and enhanced communication capabilities of unmanned aerial vehicles (UAVs) have enabled numerous real-time sensing applications. These scenarios often necessitate task offloading and execution under stringent transmission delay constraints, particularly for time-critical applications such as disaster rescue and environmental monitoring. This paper investigates the improvement of MEC-based task offloading services in energy-constrained UAV networks using backscatter communication (BackCom) with non-orthogonal multiple access (BAC-NOMA). The proposed BAC-NOMA protocol allows uplink UAVs to utilize downlink signals for backscattering tasks instead of transmitting through uplink NOMA. A resource allocation problem is formulated, aimed at minimizing offloading delays for uplink users. By converting the initially non-convex problem into a convex one, an iterative algorithm is developed to solve it. Simulation results demonstrate that the proposed protocol significantly reduces offloading delays relative to existing benchmarks.https://www.mdpi.com/1424-8220/25/1/84unmanned aerial vehiclenon-orthogonal multiple accessedge computingbackscatter communicationdelay minimization |
| spellingShingle | Haodong Li Zhengkai Yin Changsheng Chen Delay Minimization for BAC-NOMA Offloading in UAV Networks Sensors unmanned aerial vehicle non-orthogonal multiple access edge computing backscatter communication delay minimization |
| title | Delay Minimization for BAC-NOMA Offloading in UAV Networks |
| title_full | Delay Minimization for BAC-NOMA Offloading in UAV Networks |
| title_fullStr | Delay Minimization for BAC-NOMA Offloading in UAV Networks |
| title_full_unstemmed | Delay Minimization for BAC-NOMA Offloading in UAV Networks |
| title_short | Delay Minimization for BAC-NOMA Offloading in UAV Networks |
| title_sort | delay minimization for bac noma offloading in uav networks |
| topic | unmanned aerial vehicle non-orthogonal multiple access edge computing backscatter communication delay minimization |
| url | https://www.mdpi.com/1424-8220/25/1/84 |
| work_keys_str_mv | AT haodongli delayminimizationforbacnomaoffloadinginuavnetworks AT zhengkaiyin delayminimizationforbacnomaoffloadinginuavnetworks AT changshengchen delayminimizationforbacnomaoffloadinginuavnetworks |