mMTC中基于功率控制的URLL上行无线资源优化方案
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摘要
提出了一种大规模机器类通信(mMTC)中基于功率控制的高可靠低迟延(URLL)上行无线资源优化方案.考虑时分双工蜂窝网络,设计了上行链路传输的反向功率控制方案,并导出了基于距离的链路可靠性函数;在此基础上,建立了上行无线资源优化模型,分析了链路可靠性函数的特性,并提出了一种基于黄金分割搜索最优的传输错误概率算法;给出了一种最小化系统所需的总带宽算法,可为每个用户分配多个子信道,用户通过判断信道增益是否超过门限值来选择子信道.仿真实验结果表明,新方案在迟延和可靠性的改进以及总带宽、功耗等方面的优势显著.
An optimal scheme of uplink resource allocation for ultra-reliable and low-latency(URLL) in massive machine type communications(m MTC) with power control is proposed. Considering time division duplexing(TDD) cellular networks,the reverse power control scheme of uplink transmission by using the distance measurement capability of multi-antenna TDD base station is designed and the linkbased reliability function based on distance is derived. Further,the optimization model of uplink radio resources is built. Then the characteristic of the link reliability function is analyzed and an optimal transmission error probability algorithm based on golden section is proposed. Furthermore,an algorithm to minimize the total bandwidth required by the system is given. Multiple sub-channels may be assigned to each user,and the user selects the sub-channel by judging whether the channel gain exceeds the threshold. Finally,simulation experiments show the improvement of latency and reliability,as well as the performance advantages of total bandwidth,power consumption and so on.
An optimal scheme of uplink resource allocation for ultra-reliable and low-latency(URLL) in massive machine type communications(m MTC) with power control is proposed. Considering time division duplexing(TDD) cellular networks,the reverse power control scheme of uplink transmission by using the distance measurement capability of multi-antenna TDD base station is designed and the linkbased reliability function based on distance is derived. Further,the optimization model of uplink radio resources is built. Then the characteristic of the link reliability function is analyzed and an optimal transmission error probability algorithm based on golden section is proposed. Furthermore,an algorithm to minimize the total bandwidth required by the system is given. Multiple sub-channels may be assigned to each user,and the user selects the sub-channel by judging whether the channel gain exceeds the threshold. Finally,simulation experiments show the improvement of latency and reliability,as well as the performance advantages of total bandwidth,power consumption and so on.
引文
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[3] Osseiran A,Boccardi F,Braun V,et al. Scenarios for5G mobile and wireless communications:the vision of theMETIS project[J]. IEEE Communications Magazine,2014,52(5):26-35.
[4] Meryem Simsek,Adnan Aijaz,Mischa Dohler,et al.5G-enabled tactile internet[J]. IEEE Journal on SelectedAreas in Communications,2016,34(3):460-473.
[5] 3GPP R1—120056,Analysis on traffic model and char-acteristics for MTC and text proposal[S]. TSG-RANMeeting WG1#68,Dresden:[s. n.],2012.
[6] Aijaz A. Towards 5G-enabled tactile internet:radio re-source allocation for haptic communications[C]∥IEEEWireless Communications and Networking Conference(WCNC). 2016:145-150.
[7] Chen J J,Liang J M,Chen Z Y. Energy-efficient uplinkradio resource management in LTE-advanced relay net-works for internet of things[C]∥IEEE Wireless Commu-nications and Mobile Computing Conference(IWCMC).2014:745-750.
[8] Aijaz A,Aghvami A H. On radio resource allocation inLTE networks with machine-to-machine communications[C]∥IEEE 77thVehicular Technology Conference(VTCSpring). 2013:1-5.
[9] Aijaz A,Tshangini M,Nakhai M R,et al. Energy-effi-cient uplink resource allocation in LTE networks withM2M/H2H co-existence under statistical Qo S guarantees[J]. Communications IEEE Transactions on,2014,62(7):2353-2365.
[10] She C,Yang C,Quek T Q S. Cross-layer optimizationfor ultra-reliable and low-latency radio access networks[J]. IEEE Transactions on Wireless Communications,2018,17(1):127-141.
[11] She C,Yang C,Quek T Q S. Uplink transmission de-sign with massive machine type devices in tactile internet[C]∥Proceeding of IEEE Globecom Workshops.[s.l.]:IEEE,2016:1-6.
[12] Yang W,Durisi G,Koch T,et al. Quasi-static multi-ple-antenna fading channels at finite blocklength[J].IEEE Transactions on Information Theory,2013,60(7):4232-4265.
[13] Liu L,Yi Y,C. J.-F,et al. Energy-efficient power al-location for delay-sensitive multimedia traffic over wire-less systems[J],IEEE Trans. Vehicular Technology,2014,63(5):2038-2047.
[14] Chen S,Sun S,Wang Y,et al. A comprehensive sur-vey of TDD-based mobile communication systems fromTD-SCDMA 3G to TD-LTE(A)4G and 5G directions[J]. China Communications,2015,12(2):40-60.