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학술지 HARQ-ARQ Interaction Method for LTE-Based Mobile Satellite Communication System
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저자
홍태철, 강군석, 구본준, 안도섭
발행일
201409
출처
International Journal of Satellite Communications and Networking, v.32 no.5, pp.377-392
ISSN
1542-0973
출판사
John Wiley & Sons
DOI
https://dx.doi.org/10.1002/sat.1052
협약과제
13PR2700, 지상 이동통신을 위한 2.1GHz 위성 주파수 대역 최적 활용기술 개발, 구본준
초록
Hybrid automatic repeat request (HARQ) and automatic repeat request (ARQ) of the terrestrial long-term evolution (LTE) system are designed considering the very short propagation delay of terrestrial environment. Therefore, when HARQ and ARQ are applied to the LTE-based mobile satellite communication system, the inefficiency is caused by the long propagation delay of satellite environment. This paper proposes the interaction method between HARQ and ARQ for the decrease of inefficiency in the LTE-based mobile satellite communication system. The existing concept of layered architecture about HARQ and ARQ is also maintained in our interaction method. Simulation results reveal that our proposed scheme can provide the larger spectrum efficiency than that of the non-interaction scheme in all environments. The performance improvement can be up to 2.04 times through the interaction method.
키워드
ARQ, Cross layer, GEO, HARQ, LTE, Satellite communication
KSP 제안 키워드
Cross-layer, Hybrid automatic repeat request(HARQ), Long propagation delay, Long term Evolution(LTE), Spectrum efficiency, interaction scheme, layered architecture, mobile satellite communication system, performance improvement, simulation results