本文關(guān)鍵詞：未授權(quán)頻段LTE-LAA與WiFi共存系統(tǒng)性能分析　出處：《東南大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年03期 　論文類型：期刊論文

  更多相關(guān)文章： LAA LBT Cat Markov 系統(tǒng)共存

【摘要】：為分析在未授權(quán)頻段授權(quán)輔助接入(LAA)框架與無線局域網(wǎng)802.11系列標(biāo)準(zhǔn)(Wi Fi)共存的系統(tǒng)公平性問題,基于當(dāng)前LAA框架的類型B(type B),建立了LAA系統(tǒng)與Wi Fi系統(tǒng)的共存模型.使用二維離散馬爾可夫(Markov)模型對type B接入過程的‘說之前聽’類型3(LBT Cat3)進(jìn)行建模分析,進(jìn)而建立共存模型.通過更改共存的設(shè)備數(shù)量和LAA設(shè)備的LBT Cat3參數(shù),分析LAA設(shè)備與Wi Fi設(shè)備在共存場景中的性能.根據(jù)分析模型創(chuàng)建相應(yīng)仿真場景,以驗(yàn)證分析模型性能.分析計(jì)算結(jié)果與仿真計(jì)算結(jié)果表明,提出的分析模型在不同LAA與Wi Fi設(shè)備數(shù)量比和不同LBT Cat3參數(shù)情況下均能有效預(yù)測共存的LAA與Wi Fi設(shè)備成功占用信道比率.LAA系統(tǒng)適當(dāng)調(diào)整LBT Cat3參數(shù)可以實(shí)現(xiàn)與Wi Fi系統(tǒng)公平共存和最大化信道利用率.
[Abstract]:Analysis on unauthorized access authorization (LAA) band auxiliary frame and 802.11 series wireless LAN standard (Wi Fi) problem of system fairness coexist, the framework of LAA type based on B (type B), a model of LAA system and Wi Fi coexistence system. Using the two-dimensional discrete model of Ma Lekov (Markov) type B access "listen before talk" type 3 (LBT Cat3) are analyzed, and then establish the coexistence model. Through the LBT Cat3 parameter change quantity of equipment and the coexistence of LAA equipment, LAA equipment and Wi analysis of Fi equipment in the scene can coexist. Create the corresponding simulation model according to the scene analysis, to verify a performance analysis model. The calculation results and the simulation results show that the proposed model in a number of different LAA and Wi Fi and LBT Cat3 devices than different parameters under the condition can effectively predict the coexistence of LAA and Wi Fi equipment successfully occupied the letter The proper adjustment of the LBT Cat3 parameters by the channel ratio.LAA system can achieve fair coexistence with the Wi Fi system and maximize the utilization of the channel.

【作者單位】： 東南大學(xué)移動通信國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(61571111)
【分類號】：TN92;TN929.5
【正文快照】： 第三代合作伙伴計(jì)劃(3rd generation partner-ship project,3GPP)提出基于長期演進(jìn)技術(shù)的授權(quán)輔助接入(licensed-assisted access framework forlong-term evolution,LTE-LAA)框架,用于將蜂窩網(wǎng)絡(luò)中部分業(yè)務(wù)卸載到未授權(quán)頻段.未授權(quán)頻段充斥著大量無線局域網(wǎng)80.11標(biāo)準(zhǔn)(wireles，

本文編號：1398912