CAJ | 학술논문

针对LTE中较大TB（Transport Block）传输时占用较多时频资源且容易出现错误致使资源浪费的情况，提出了一种新型混合自动重传请求（HARQ）传输方案。新型传输方案在HARQ实体内根据TB大小对其进行分段，取消物理层的分段功能，形成单进程下多分段数据块并行传输，在需要重新传输时，仅传输接收检测出错的分段数据即可。仿真结果表明，提出的新型传输方案在系统吞吐量和平均传输次数方面明显优于传统方案。
침대LTE중교대TB（Transport Block）전수시점용교다시빈자원차용역출현착오치사자원낭비적정황，제출료일충신형혼합자동중전청구（HARQ）전수방안。신형전수방안재HARQ실체내근거TB대소대기진행분단，취소물리층적분단공능，형성단진정하다분단수거괴병행전수，재수요중신전수시，부전수접수검측출착적분단수거즉가。방진결과표명，제출적신형전수방안재계통탄토량화평균전수차수방면명현우우전통방안。
In LTE(3G Long Term Evolution), larger TB(Transport Block) occupies more time-frequency resources and is prone to error so as to a waste of resources. In view of this case, a novel transmission scheme of Hybrid Automatic Retransmission Request(HARQ)is proposed. The new transmission scheme takes segmentation based on the TB size in the HARQ entity instead of the segment function of physical layer. Then multiple segment data blocks can be transported parallelly in a single process. If the data are needed to be retransmitted, the transmitter only transports the error segmentation data. Simulation results show that the proposed new transmission scheme is obviously better than the traditional scheme in regard to system throughput and the average number of transmissions.