CAJ | 학술논문

在LTE-A标准中，下行用户级的解调参考信号会与物理广播信道以及主、辅同步信号等冲突。终端可以不接收冲突的资源块甚至整个PDSCH/ePDCCH数据，这将对LTE-A下行系统性能产生较大影响。针对资源冲突情况，系统分析了基站和终端多种解决策略以及相应的理论性能。通过性能仿真给出了冲突解决策略的链路级性能增益。结合仿真结果，建议设备和终端共同改进来约束终端行为并提高性能。
재LTE-A표준중，하행용호급적해조삼고신호회여물리엄파신도이급주、보동보신호등충돌。종단가이불접수충돌적자원괴심지정개PDSCH/ePDCCH수거，저장대LTE-A하행계통성능산생교대영향。침대자원충돌정황，계통분석료기참화종단다충해결책략이급상응적이론성능。통과성능방진급출료충돌해결책략적련로급성능증익。결합방진결과，건의설비화종단공동개진래약속종단행위병제고성능。
In LTE standard, downlink UE-specific reference signal may col ide with physical broadcast channel, primary and secondary synchronization signals. UE may not receive those col ided resource blocks or even the whole PDSCH data. The col ision im-pacts the performance of LTE especial y TD-LTE system. It analyzes different implementation methods for eNodeB and UE. By simulation, it shows the link level performance gain after solving the col ision problem. At last it suggests that TD-LTE opera-tors define enterprise standard to restrict UE behavior.