UAV-Enabled Multiple Traffic Backhaul Based on Multiple RANs: A Batch-Arrival-Queuing-Inspired Approach

Zhi Zhang,Zhiyong Feng,Di Wu,Wenjun Xu,Jin Shang,Ping Zhang

doi:10.1109/access.2019.2951603

Zhi Zhang, Zhiyong Feng + Show 4 more

Open Access

https://doi.org/10.1109/access.2019.2951603

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Abstract

In this paper, we investigate the air-to-ground multi-traffic backhaul enabled by unmanned aerial vehicle (UAV) equipped with multiple radio access networks (RANs). Faced with the challenging traffic designation problem over diverse RANs, an efficient packet delivery scheme based on multi-priority batch arrival queuing theory is proposed to match various traffics with multiple RANs. Specifically, our contributions are three-fold: 1) The average queuing time of UAV-enabled multi-RAN access is theoretically derived according to multi-priority batch arrival queuing theory. 2) The priority factor and z-type utility function are well tailored by leveraging the derived queuing time. 3) A multiple traffic backhaul strategy is further proposed by exploiting the priority factor and z-type utility function to optimize the packet delivery, i.e., maximizing the delay utility via joint network selection and power allocation for diverse RANs. The simulation results show that the average delay of delay-sensitive packets is reduced by 15%, and the overall packet delivery quality is improved considerably.

Highlights

Due to the flexible deployment and low cost, unmanned aerial vehicle (UAV) is widely used in data backhaul transmission, especially as a kind of relay device to enhance the capacity and spectrum utilization of radio access networks (RANs) [1]–[6]
3) A multiple traffic backhaul strategy is further proposed by exploiting the priority factor and z-type utility function to optimize the packet delivery, i.e., maximizing the delay utility via joint network selection and power allocation for diverse RANs
In this paper, the performance of multi-RAN data transmission enabled by UAVs is analyzed by leveraging the new multi-priority batch arrival queuing theory, and a queuing-aware multiple traffic backhaul strategy is proposed to schedule diverse traffics to the most appropriate resource over RANs

Summary

INTRODUCTION

Due to the flexible deployment and low cost, unmanned aerial vehicle (UAV) is widely used in data backhaul transmission, especially as a kind of relay device to enhance the capacity and spectrum utilization of radio access networks (RANs) [1]–[6]. For the highvolume and multi-type data transmission over diverse RANs, a large number of packets usually arrive in batches rather than individually in a short period of time, and different packet types usually correspond to differentiated priority requirements These two features disable the traditional queuing models, e.g., M/M/1, M/G/1, G/G/1, to capture the performance of multi-RAN data transmission. In this paper, the performance of multi-RAN data transmission enabled by UAVs is analyzed by leveraging the new multi-priority batch arrival queuing theory, and a queuing-aware multiple traffic backhaul strategy is proposed to schedule diverse traffics to the most appropriate resource over RANs. The main contributions of this paper are as follows:.

SYSTEM MODEL

RESOURCE ALLOCATION FORMULATION

ALGORITHM DESIGN

2: Determine a specific number range of packets that each network can receive:

SIMULATION RESULTS

CONCLUSION