Dynamic Radio Frame Configuration by Exploiting Uplink Control Channel for URLLC

2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW) Pub Date : 2019-04-01 DOI:10.1109/WCNCW.2019.8902898

Navuday Sharma, M. Alam, Y. Moullec, Hassan Malik, M. Bennis, Sven Pärand

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Abstract

uRLLC (ultra-Reliable Low Latency Communications) requires a new paradigm in 5G cellular networks to satisfy extreme latency and reliability thresholds. Further, such constraints have a wide range due to different use case scenarios. Consequently, how to configure suitable radio frame structure that matches to the latency and reliability requirements of the given use-case is an open question. This article addresses the above-mentioned issue and provides a preliminary investigation and a feasible solution by exploiting antenna port selection index (APSI) calculated using fuzzy logic algorithm, which is further communicated through physical uplink control channel. Closed-form expressions of outage probability for the number of users, under given latency and reliability constraints have been provided with the mathematical proof and the results were simulated based on the prior availability of APSI. It is shown that outage probability improves up to 30% in case of dynamic radio frame configuration.

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利用URLLC上行控制信道的动态无线电帧配置

uRLLC(超可靠低延迟通信)需要5G蜂窝网络中的新范式来满足极端延迟和可靠性阈值。此外，由于不同的用例场景，此类约束的范围很广。因此，如何配置与给定用例的延迟和可靠性要求相匹配的合适的无线电帧结构是一个悬而未决的问题。本文针对上述问题，提出了利用模糊逻辑算法计算天线端口选择指数(APSI)，并通过物理上行控制信道进行通信的初步研究和可行的解决方案。给出了给定时延和可靠性约束下用户数量中断概率的封闭表达式，并基于APSI的先验可用性对结果进行了仿真。结果表明，采用动态无线电帧配置可使中断概率提高30%。

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2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)

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