무인기 통신에서 위치정보 및 QoS 기반의 백홀 링크 선택 기법 = Selection Scheme of Backhaul Link Based on Location Information and QoS in UAV Communications

다국어 초록 (Multilingual Abstract)

In this paper, we consider a link selection scheme of backhaul link based on location information and quality of service (QoS) in unmanned aerial vehicle (UAV) communications. To efficiently use the wireless resource and guarantee the QoS, the location information and QoS requirement by the policy are addressed in the proposed link selection scheme. Especially, the elevation angle, the line of sight (LOS) channel environment, and the requirement of the link connectivity for services are used in the proposed scheme. In the simulation results, it is shown that the proposed scheme can guarantee the QoS performance in the data service. Furthermore, the resource usage can be reduced as compared with that of the on-demand scheme because the proposed scheme is a proactive link selection scheme based on the location information and the QoS. For VoIP and video streaming services, regardless of the elevation angle and the LOS channel environment, it also indicated that the proposed scheme provides the required QoS performance by the QoS policy in the UAV communications.

국문 초록 (Abstract)

본 논문에서는 무인기 통신에서 위치정보 및 QoS (Quality of Service) 기반의 백홀 링크 선택 기법을 고려한다. 제안하는 선택 기법에서는 효율적인 무선 자원 사용과 QoS를 보장하기 위해 위치 정보와 QoS 정책에 의한 요구 사항을 이용하며 상세하게는 고각, 가시선 채널 환경, QoS 정책에서 요구하는 링크 연결성 정보 등이 활용된다. 성능 분석 결과, 제안한 기법은 위치 정보와 QoS 기반의 proactive 방식으로 링크를 선택하기 때문에 고각 상태나 가시선 채널 환경과 상관없이 데이터 서비스에서 요구하는 QoS를 항상 보장할 수 있을 뿐 아니라 on-demand 방식과 비교해서 자원 이용량을 줄일 수 있는 것을 확인할 수 있었다. VoIP와 비디오 스트리밍 서비스에 대해서도 성능 분석 결과, 제안한 링크 선택 기법은 QoS 정책에서 요구하는 무인기 통신의 QoS 성능을 보장하는 것을 살펴 볼 수 있었다.

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