Achieving low latency and energy consumption by 5G TDD mode optimization
Communications Workshops(2014)
摘要
The target for a new 5G radio access technology is to support multi-Gbps and ms latency connectivity simultaneously at noticeably lower energy consumption and cost compared to the existing 4G technologies, such as LTE-Advanced. Extremely short air interface latency is required to achieve these requirements in a TDD-based local area network. In this paper, we discuss how the required short TDD latency can be achieved and further utilized in 5G physical air interface. First, we investigate the enablers and limits of TDD latency by analyzing the performance of OFDM in different channel environments and discussing on the consequent frame length limits. We then provide a description on how the achieved short TDD latency can further be utilized to enable remarkably low energy consumption. A numerical analysis comparing the battery life time of the suggested 5G TDD air interface and LTE is provided, showing remarkable gains for the 5G air interface concept.
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关键词
4g mobile communication,long term evolution,ofdm modulation,energy consumption,optimisation,radio access networks,telecommunication power management,time division multiplexing,4g technology,5g tdd mode optimization,5g physical air interface,5g radio access technology,lte-advanced,ofdm,tdd-based local area network,battery life time,channel environments,frame length limits,low energy consumption,low latency,numerical analysis,short tdd latency,short air interface latency,time division duplexing,3gpp,5g,lte,m2m,rat,tdd,tti,cyclic prefix,frame structure,latency,local area,subcarrier spacing,wake-up time
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