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5G Radio Network Design for Ultra-Reliable Low-Latency Communication
IEEE NETWORK ( IF 9.3 ) Pub Date : 2018-04-02 , DOI: 10.1109/mnet.2018.1700232
Joachim Sachs , Gustav Wikstrom , Torsten Dudda , Robert Baldemair , Kittipong Kittichokechai

5G is currently being standardized and addresses, among other things, new URLLC services. These are characterized by the need to support reliable communication, where successful data transmission can be guaranteed within low latency bounds, like 1 ms, at a low failure rate. This article describes the functionality of both the NR and LTE radio interfaces to provide URLLC services. Achievable latency bounds are evaluated, and the expected spectral efficiency is demonstrated. It is shown that both NR and LTE can fulfill the ITU 5G requirements on URLLC; however, this comes at the cost of reduced spectral efficiency compared to mobile broadband services without latency or reliability constraints. Still, the impact on the overall network performance is expected to be moderate.

中文翻译:

超可靠的低延迟通信的5G无线电网络设计

5G目前正在标准化,并且除其他外,还解决了新的URLLC服务。这些特点是需要支持可靠的通信,在这种情况下,可以在低延迟率(例如1 ms)内以低故障率保证成功的数据传输。本文介绍了提供URLLC服务的NR和LTE无线接口的功能。评估了可达到的等待时间界限,并证明了预期的频谱效率。结果表明,NR和LTE均可满足URLLC上的ITU 5G要求;但是,与没有延迟或可靠性约束的移动宽带服务相比,这是以降低频谱效率为代价的。尽管如此,预计对整体网络性能的影响将是中等的。
更新日期:2018-04-03
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