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機(jī)器類通信中基于NOMA短編碼塊傳輸?shù)母呖煽康瓦t延無線資源分配優(yōu)化方案

謝顯中 黎佳 黃倩 陳杰

謝顯中, 黎佳, 黃倩, 陳杰. 機(jī)器類通信中基于NOMA短編碼塊傳輸?shù)母呖煽康瓦t延無線資源分配優(yōu)化方案[J]. 電子與信息學(xué)報, 2019, 41(11): 2549-2556. doi: 10.11999/JEIT190128
引用本文: 謝顯中, 黎佳, 黃倩, 陳杰. 機(jī)器類通信中基于NOMA短編碼塊傳輸?shù)母呖煽康瓦t延無線資源分配優(yōu)化方案[J]. 電子與信息學(xué)報, 2019, 41(11): 2549-2556. doi: 10.11999/JEIT190128
Xianzhong XIE, Jia LI, Qian HUANG, Jie CHEN. Optimal Scheme of Resource Allocation for Ultra-reliable and Low-latency in Machine Type Communications Based on Non-orthogonal Multiple Access with Short Block Transmission[J]. Journal of Electronics & Information Technology, 2019, 41(11): 2549-2556. doi: 10.11999/JEIT190128
Citation: Xianzhong XIE, Jia LI, Qian HUANG, Jie CHEN. Optimal Scheme of Resource Allocation for Ultra-reliable and Low-latency in Machine Type Communications Based on Non-orthogonal Multiple Access with Short Block Transmission[J]. Journal of Electronics & Information Technology, 2019, 41(11): 2549-2556. doi: 10.11999/JEIT190128

機(jī)器類通信中基于NOMA短編碼塊傳輸?shù)母呖煽康瓦t延無線資源分配優(yōu)化方案

doi: 10.11999/JEIT190128
基金項目: 國家自然科學(xué)基金(61601070),重慶市教委科學(xué)技術(shù)研究重點項目(KJZD-K201800603),重慶市基礎(chǔ)與前沿研究計劃項目(cstc2018jcyjAX0432),重慶市研究生科研創(chuàng)新項目(CYS17223)
詳細(xì)信息
    作者簡介:

    謝顯中:男,1966年生,博士,教授,博士生導(dǎo)師,研究方向為移動通信網(wǎng)絡(luò)、認(rèn)知無線電技術(shù)等

    黎佳:女,1993年生,碩士生,研究方向為MTC與高可靠低遲延通信

    黃倩:女,1990年生,博士生,研究方向為車聯(lián)網(wǎng)與高可靠低遲延通信

    陳杰:男,1993年生,碩士生,研究方向為車聯(lián)網(wǎng)與網(wǎng)絡(luò)編碼

    通訊作者:

    黎佳 li_jia_2017@163.com

  • 中圖分類號: TN925

Optimal Scheme of Resource Allocation for Ultra-reliable and Low-latency in Machine Type Communications Based on Non-orthogonal Multiple Access with Short Block Transmission

Funds: The National Nature Science Foundation of China (61601070), The Key Science and Technology Research Program of Chongqing Municipal Education Commission (KJZD-K201800603), The Foundation and Frontier Research Program of Chongqing (cstc2018jcyjAX0432), The Graduate Scientific Research Innovation Program of Chongqing (CYS17223)
  • 摘要: 針對機(jī)器類通信(MTC)應(yīng)用場景的業(yè)務(wù)特征和服務(wù)質(zhì)量(QoS)要求,該文考慮基于非正交多址(NOMA)的MTC中短分組/短編碼塊傳輸,探討MTC中基于NOMA的高可靠低遲延無線資源優(yōu)化問題。首先,上行傳輸是基于NOMA的MTC通信的瓶頸,考慮無線蜂窩網(wǎng)絡(luò)中支持NOMA和高可靠低遲延性能要求,該文建立了上行無線資源優(yōu)化的系統(tǒng)模型;然后,分析上行傳輸遲延,導(dǎo)出基于距離的鏈路可靠性函數(shù);進(jìn)一步,以遲延、可靠性和帶寬為約束下條件,提出一種最大化中心用戶和速率的無線資源分配算法,并給出算法的收斂性證明和復(fù)雜度分析;最后,實驗仿真驗證了所提算法的性能優(yōu)勢。
  • 圖  1  非正交多址K個用戶對系統(tǒng)模型

    圖  2  短幀結(jié)構(gòu)

    圖  3  用戶離基站的距離與可靠性的關(guān)系曲線

    圖  4  不同${\varepsilon _{\max }}$下用戶數(shù)與系統(tǒng)和速率的關(guān)系曲線

    圖  5  用戶數(shù)與系統(tǒng)所需總帶寬的關(guān)系曲線

    圖  6  用戶數(shù)與吞吐量的關(guān)系曲線

    圖  7  用戶數(shù)與能量效率的關(guān)系曲線

    表  1  算法1的具體流程

     算法1 用戶2的和速率最大化算法
     步驟1 輸入${N_k}$, ${r_k}$,當(dāng)${N_k} \le {N_{\max }}$時,初始值${B_{lb}} = 0$, ${B_{ub}} = {W_{\rm{c}}}$, ${B_0} = \frac{{{B_{lb}} + {B_{ub}}}}{2}$;
     步驟2 當(dāng)${B_{ub}} - {B_{lb}} > {\delta _b}$,通過二分法計算得到使${f_u}\left( {{r_k},{N_k},{B_i},\varepsilon _i^1,\varepsilon _i^2} \right)$最小化的$\varepsilon _i^1$, $\varepsilon _i^2$;
     步驟3 若${f_u}\left( {{r_k},{N_k},{B_i},\varepsilon _i^1,\varepsilon _i^2} \right) > {\varepsilon ^{\max }}$,更新初始值${B_{lb}} = {B_i}$, ${B_i} = \frac{{{B_{1b}} + {B_{ub}}}}{2}$,或者${B_{ub}} = {B_i}$, ${B_i} = \frac{{{B_{1b}} + {B_{ub}}}}{2}$;否則轉(zhuǎn)步驟4;
     步驟4 若${f_u}\left( {{r_k},{N_k},{B_i},\varepsilon _i^1,\varepsilon _i^2} \right) < {\varepsilon ^{\max }}$, ${B_k}({N_k}) = {B^{\rm{opt}}}$或者${B_k}({N_k}) = {\rm{NaN}}$;
     步驟5 求出$N_k^*{\rm{ = }}\mathop {\arg }\limits_{{N_k}} \min {N_k}{B_k}({N_k})$, $B_k^*{\rm{ = }}{B_k}(N_k^*)$;
     步驟6 把$N_k^*$, $B_k^*$代入到$R_k^2$中求出最優(yōu)的$R_k^{2 * }$。
    下載: 導(dǎo)出CSV
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出版歷程
  • 收稿日期:  2019-03-05
  • 修回日期:  2019-06-26
  • 網(wǎng)絡(luò)出版日期:  2019-07-04
  • 刊出日期:  2019-11-01

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