5G 기반의 D2D 스트리밍을 위한 트래픽-지향의 스트림 스케줄링
Traffic-Oriented Stream Scheduling for 5G-based D2D Streaming Services
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5G 이동통신 서비스가 점차 확대되어감에 따라 P2P 또는 D2D 응용에서 유튜부 비디오 스트리밍과 같은 트래픽 지향의 스트림 제어가 중요한 기술로 떠오르고 있다. 특히 D2D 통신에서 사용자들이 가장 많이 전송하는 데이터 스트림의 타입은 비디오 스트림이며, 이것은 대용량의 전송스트림의 특징을 가지고 있다. D2D 통신환경에서 이런 종류의 스트림은 트래픽 혼잡의 원인을 제공할 뿐만 아니라 또한 DUE들 간의 서비스 품질을 저하시킨다. 본 논문에서는 비디오 스트림과같은 동적 미디어 스트림의 끊김현상을 최소화하고 스트리밍 서비스 품질을 최적화하기 위해TOSS 기법을 제안한다. 제안된 기법은 5G gNB 환경하의 3.5GHz와 28GHz의 대역폭상에서 미디어 스트림의 특성과 트래픽 타입을 분석하여 미디어 스트림을 스케줄링한다. 우리는 시뮬레이션을 통하여 제안된 기법의 성능을 알아보며, 시뮬레이션 결과는 제안된 기법이 다른 비교 기법들에 비해서 성능이 보다 우수함을 보인다.
Abstract
As 5G mobile communication services gradually expand in P2P (peer-to-peer) or D2D (device-to-device) applications, traffic-oriented stream control such as YouTube streaming is emerging as an important technology. In D2D communication, the type of data stream most frequently transmitted by users is a video stream, which has the characteristics of a large-capacity transport stream. In a D2D communication environment, this type of stream not only provides a cause of traffic congestion, but also degrades the quality of service between D2D User Equipments (DUEs). In this paper, we propose a Traffic-Oriented Stream Scheduling (TOSS) scheme to minimize the interruption of dynamic media streams such as video streams and to optimize streaming service quality. The proposed scheme schedules the media stream by analyzing the characteristics of the media stream and the traffic type in the bandwidth of 3.5 GHz and 28 GHz under the 5G gNB environment. We examine the performance of the proposed scheme through simulation, and the simulation results show that the proposed scheme has better performance than other comparative methods.
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