CAJ | 학술논문

无线资源调度是LTE系统研究的一个热点问题。LTE上行链路采用了单载波正交频多址(SC-FDMA)技术，要求在调度时为任一用户分配的RB必须是连续的，使得LTE下行调度算法不能直接应用上行调度。本文对LTE系统上行链路资源调度问题的研究状况进行了概述，分别从信道感知、比例公平、QoS保证三个方面，对现有调度算法进行了分析和比较。重点分析比较了各个算法在保证分配的RB连续的前提下系统性能，并提出了进一步研究的方向。
무선자원조도시LTE계통연구적일개열점문제。LTE상행련로채용료단재파정교빈다지(SC-FDMA)기술，요구재조도시위임일용호분배적RB필수시련속적，사득LTE하행조도산법불능직접응용상행조도。본문대LTE계통상행련로자원조도문제적연구상황진행료개술，분별종신도감지、비례공평、QoS보증삼개방면，대현유조도산법진행료분석화비교。중점분석비교료각개산법재보증분배적RB련속적전제하계통성능，병제출료진일보연구적방향。
Wireless resource scheduling has been a hot issue of research in LTE. Due to LTE uses Single Carrier Frequency Division Multiple Access(SC-FDMA)as the uplink transmission scheme, resource assigned to the same user equipment (UE) must be contiguous for the uplink, so scheduling algorithms in LTE downlink can’t be used for the uplink directly. In this paper, we overviewed recent developments in scheduling algorithms and al ocation problems in LTE system, and evaluated the performance of some LTE uplink scheduling algorithms for channel-aware, Proportional Fair, and QoS guaranteed. This was emphases that we analysed the performance of these algorithms on the promise that resource assigned to the same user UE must be contiguous, furthermore the problems to be further investigated were presented.