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文章讨论了三种典型的缓存辅助中继选择方案,即缓存辅助最大-最大中继选择方案,缓存辅助全双工最大-最大中继选择方案,以及缓存辅助最大链路中继选择方案。其次,对三种方案的中断性能分别进行了探讨,并与传统的机会中继选择方案进行了对比。结果表明,缓存辅助式中继选择方案确实能够提升系统性能。另外,相比于机会中继选择方案,缓存辅助全双工最大-最大中继选择方案和缓存辅助最大-最大中继选择方案只能提升编码增益,而不能提升分集增益。然而,缓存辅助最大链路中继选择方案既能提升编码增益,也能提升分集增益。仿真结果验证了分析的正确性。
The article discusses three typical caching-assisted trunking alternatives, cached maximum-maximum trunking options, cached full-duplex max-max trunking options, and cache-assisted maximum link trunking options. Secondly, we discuss the interrupt performance of the three schemes separately, and compare with the traditional options of opportunistic relaying. The results show that cache-assisted trunking solutions do improve system performance. In addition, the CACHE maximum-maximum relay option and the CACHE maximum-maximum relay selection scheme can only increase the coding gain without increasing the diversity gain compared to the opportunistic relay selection scheme. However, Cache-Assisted Maximum Link Trunk Selection improves both coding gain and diversity gain. The simulation results verify the correctness of the analysis.