本文關(guān)鍵詞：蜂窩與終端自組織混合網(wǎng)絡(luò)的關(guān)鍵技術(shù)研究　出處：《北京郵電大學(xué)》2014年博士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 終端直通通信 模式選擇 中繼選擇 功率控制 路由選擇

【摘要】：受自身網(wǎng)絡(luò)結(jié)構(gòu)的局限,現(xiàn)有蜂窩網(wǎng)絡(luò)很難滿足下一代無(wú)線移動(dòng)網(wǎng)絡(luò)的高速率、廣泛服務(wù)以及高速移動(dòng)等要求。為改善現(xiàn)有蜂窩網(wǎng)絡(luò)的缺陷,將Ad Hoc網(wǎng)絡(luò)結(jié)構(gòu)引入蜂窩網(wǎng)絡(luò)系統(tǒng)形成蜂窩與終端自組織混合網(wǎng)絡(luò)。在該混合網(wǎng)絡(luò)中,利用Ad Hoc網(wǎng)絡(luò)中一跳或多跳通信的優(yōu)勢(shì)與蜂窩網(wǎng)絡(luò)形成互補(bǔ)和共存,可以提高網(wǎng)絡(luò)整體性能。因此,蜂窩與終端自組織混合網(wǎng)絡(luò)已成為一種重要的網(wǎng)絡(luò)結(jié)構(gòu)。 在蜂窩與終端自組織混合網(wǎng)絡(luò)中,終端之間共享蜂窩網(wǎng)絡(luò)無(wú)線資源(正交使用或復(fù)用)進(jìn)行短距離的點(diǎn)對(duì)點(diǎn)的直接通信。這種網(wǎng)絡(luò)結(jié)構(gòu)利用終端直通通信鏈路的短距離特點(diǎn)和終端廣泛分布的有利條件,提供具有靈活適應(yīng)能力的數(shù)據(jù)服務(wù),顯著提高系統(tǒng)容量；利用終端直通多跳通信的特點(diǎn),可以拓展無(wú)線中繼的應(yīng)用場(chǎng)景,有效改善網(wǎng)絡(luò)結(jié)構(gòu)、提升覆蓋性能,并提高混合網(wǎng)絡(luò)的系統(tǒng)容量和服務(wù)質(zhì)量。 本文主要研究蜂窩與終端自組織混合網(wǎng)絡(luò)中的關(guān)鍵技術(shù),包括混合網(wǎng)絡(luò)中終端通信模式選擇,輔助蜂窩網(wǎng)絡(luò)接入的中繼終端選擇、輔助終端與終端之間直通通信的中繼終端位置以及功率控制以及多跳直通通信的路由選擇。本文的主要貢獻(xiàn)如下： 第一,針對(duì)三種終端通信方式展開(kāi)對(duì)混合網(wǎng)絡(luò)中的終端通信模式選擇的研究。這三種通信方式分別是蜂窩通信、終端一跳直通通信以及帶中繼的終端直通通信。文中根據(jù)終端直通通信的中斷概率,給出使用一跳直通通信的條件,推導(dǎo)了使用帶中繼終端直通通信的前提條件,并給出了最佳中繼終端的選擇標(biāo)準(zhǔn)�；谇懊娴姆治�,推導(dǎo)了使用帶中繼終端的直通通信以及蜂窩通信的條件。這一部分研究的主要?jiǎng)?chuàng)新點(diǎn)是：1)推導(dǎo)了混合網(wǎng)絡(luò)中兩個(gè)終端無(wú)法進(jìn)行一跳直通的條件,并給出了選擇最優(yōu)中繼終端的標(biāo)準(zhǔn)；2)給出了使用帶中繼終端的直通通信條件。在這個(gè)條件下,使用帶中繼終端的直通通信可以得到比蜂窩通信更大的通信容量。 第二,在輔助蜂窩網(wǎng)絡(luò)接入的中繼終端選擇的研究中,首先分析了中繼終端分別與蜂窩邊緣用戶(hù)以及與基站的通信容量,然后推導(dǎo)了基于干擾受限的中繼終端選擇標(biāo)準(zhǔn)。之后把最大化混合網(wǎng)絡(luò)的總吞吐量歸結(jié)為帶權(quán)值二分圖的最佳匹配問(wèn)題,并使用KM和貪婪算法作為兩種中繼選擇算法為多個(gè)處于邊緣的終端選擇可用中繼。這部分研究的主要?jiǎng)?chuàng)新點(diǎn)是根據(jù)輔助邊緣終端用戶(hù)和基站通信這一場(chǎng)景,推導(dǎo)出了可以作為中繼終端的選擇準(zhǔn)則,并利用帶權(quán)值二分圖的最佳匹配問(wèn)題解決最大化網(wǎng)絡(luò)吞吐問(wèn)題。通過(guò)KM算法和貪婪算法選擇出中繼終端,證明了使用中繼選擇準(zhǔn)則的優(yōu)越性。 第三,在蜂窩與終端自組織混合網(wǎng)絡(luò)中,終端輔助的直通通信的場(chǎng)景中,研究中繼終端的最佳位置以及最小發(fā)送功率。首先,推導(dǎo)了中繼終端復(fù)用蜂窩資源時(shí)瑞利信道下的遍歷容量公式,這是一個(gè)用于直通通信復(fù)用一個(gè)蜂窩上行鏈路資源時(shí)的高信噪比(SNR)和高干噪比(INR)的遍歷容量公式。然后,基于這個(gè)遍歷公式,在終端相對(duì)距離已知的條件下給出了最佳中繼終端位置的表達(dá)式。最后,提出一個(gè)遍歷的搜索算法來(lái)找到最優(yōu)的中繼終端位置以及相應(yīng)的最小發(fā)送功率。這部分研究的創(chuàng)新點(diǎn)是推導(dǎo)出了瑞利信道下的高信噪比高干噪比的遍歷信道容量公式,并基于公式推導(dǎo)出了中繼終端最佳位置和最小發(fā)送功率表達(dá)式,最后給出了一個(gè)搜索最佳中繼位置及其相應(yīng)發(fā)送功率的遍歷算法。使用此方法,可以找到終端相對(duì)距離已知的最佳中繼終端的位置,以及發(fā)送終端和中繼終端的最小發(fā)送功率。 第四,對(duì)蜂窩與終端自組織混合網(wǎng)絡(luò)中多跳直通通信的路由進(jìn)行分析和研究。首先,給出了混合網(wǎng)絡(luò)下的多跳直通通信的信道模型。在這個(gè)場(chǎng)景中,考慮蜂窩通信終端對(duì)直通通信終端的干擾范圍�；趫�(chǎng)景假設(shè)和信道模型,分析并計(jì)算得到直通通信中斷概率的表達(dá)式。之后,將得到的中斷概率表達(dá)式應(yīng)用到多跳直通路由選擇方案中,并給出了兩種路由選擇方案。通過(guò)仿真,對(duì)比了兩種路由選擇方案在信道容量上的性能。
[Abstract]:In order to improve the defects of the existing cellular network , the Ad Hoc network structure is introduced into the cellular network system to form a cellular and terminal self - organizing hybrid network . In the hybrid network , the advantages of one - hop or multi - hop communication in the Ad Hoc network and the formation of complementary and coexistence with the cellular network can improve the overall performance of the network . Therefore , the self - organizing hybrid network of the cellular and terminal has become an important network structure . in that self - organized hybrid network of the cellular and terminal , the point - to - point direct communication between the terminal and the wireless resource of the cellular network ( orthogonal use or multiplexing ) is share . This paper mainly studies the key technologies of cellular and terminal self - organizing hybrid networks , including the selection of terminal communication modes in the hybrid network , the relay terminal selection of the auxiliary cellular network access , the relay terminal location of the direct communication between the auxiliary terminal and the terminal , and the routing of the multi - hop straight - through communication . The main contributions of this paper are as follows : Firstly , the selection of terminal communication modes in a hybrid network is carried out for three kinds of terminal communication modes . The three communication modes are cellular communication , terminal - to - hop direct - pass communication and relay - based terminal direct - pass communication . Based on the analysis above , the conditions of using a relay terminal for direct - pass communication are given , and the criteria for selecting the optimal relay terminal are derived . Secondly , in the research of relay terminal selection for auxiliary cellular network access , firstly , the communication capacity of the relay terminal and the cellular edge user and the base station is analyzed . Then , the optimal matching problem based on interference limited relay terminal is deduced . Then the main innovation point of this part is the selection criterion of the relay terminal based on the communication between the end user of the auxiliary edge and the base station , and the best matching problem of the binary graph with weight value is used to solve the problem of maximum network throughput . The relay terminal is selected by the KM algorithm and the greedy algorithm , which proves the superiority of using the relay selection criterion . Thirdly , the optimal location and minimum transmit power of the relay terminal are studied in the scene of terminal - assisted straight - through communication in a cellular and terminal self - organizing hybrid network . First of all , the formula of ergodic capacity under Rayleigh channel is derived based on this traversal formula . Finally , a traversal algorithm is proposed to find the optimal location of the relay terminal and the corresponding minimum transmission power . Finally , a traversal algorithm is proposed to search the optimal relay location and its corresponding transmit power . Finally , a traversal algorithm is proposed to search the optimal relay location and its corresponding transmission power . Fourthly , the routing of multi - hop straight - through communication in a cellular and terminal self - organizing hybrid network is analyzed and studied . First of all , a channel model of multi - hop straight - through communication in a hybrid network is given . In this scenario , the interference range of a direct - pass communication terminal is analyzed and calculated considering the scenario assumption and the channel model . Then , the obtained interrupt probability expression is applied to the multi - hop straight - through routing scheme , and two routing schemes are given . Through simulation , the performance of the two routing schemes on channel capacity is compared .

【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN929.5

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本文編號(hào)：1423394