發(fā)布時(shí)間：2018-04-30 09:18

  本文選題：泛在網(wǎng) + 關(guān)聯(lián)控制�。� 參考：《中國(guó)科學(xué)技術(shù)大學(xué)》2014年博士論文

【摘要】：泛在網(wǎng)擴(kuò)展了傳統(tǒng)通信網(wǎng)絡(luò)的概念,突破了不同通信網(wǎng)絡(luò)之間的界限,將封閉的網(wǎng)絡(luò)個(gè)體融合貫通為一個(gè)整體,這不僅是網(wǎng)絡(luò)區(qū)域的疊加,還是終端的匯集以及網(wǎng)絡(luò)業(yè)務(wù)、數(shù)據(jù)和協(xié)議等的融合。在泛在網(wǎng)中,一方面各個(gè)異構(gòu)子網(wǎng)彼此融會(huì)相互協(xié)調(diào),聯(lián)合提供了透明的無(wú)縫移動(dòng)接入環(huán)境；另一方面各種業(yè)務(wù)自動(dòng)適配充分交互,一同創(chuàng)造了豐富的業(yè)務(wù)資源。這些極大地提高了網(wǎng)絡(luò)服務(wù)能力,并給終端提供了更廣泛的選擇外延。但是,網(wǎng)絡(luò)和業(yè)務(wù)環(huán)境所呈現(xiàn)的復(fù)雜性和擴(kuò)展的選擇空間也給網(wǎng)絡(luò)資源管理帶來(lái)了許多新的挑戰(zhàn)。這其中的一個(gè)突出困難就是如何智能有效地配置終端和網(wǎng)絡(luò)間的關(guān)聯(lián)關(guān)系,該配置過(guò)程即為網(wǎng)絡(luò)關(guān)聯(lián)控制機(jī)制。 對(duì)于網(wǎng)絡(luò)關(guān)聯(lián)控制機(jī)制的研究,已有眾多切實(shí)可行的解決方案。但泛在網(wǎng)的出現(xiàn)為網(wǎng)絡(luò)環(huán)境引入了更多新的特性并且給網(wǎng)絡(luò)服務(wù)提出了新的要求,因此泛在網(wǎng)關(guān)聯(lián)控制機(jī)制不會(huì)局限于既有的邊界,而將在一個(gè)更大問(wèn)題維度上進(jìn)行解決。這不僅包括如何將終端關(guān)聯(lián)到接入條件滿足的網(wǎng)絡(luò)中,還將面對(duì)在復(fù)雜的網(wǎng)絡(luò)和業(yè)務(wù)環(huán)境中的協(xié)同優(yōu)化問(wèn)題。為此本文對(duì)泛在網(wǎng)關(guān)聯(lián)控制問(wèn)題進(jìn)行了研究,以提出行之有效解決方案提高網(wǎng)絡(luò)資源的利用率,保證終端的業(yè)務(wù)體驗(yàn)。具體來(lái)說(shuō),本文分別針對(duì)泛在網(wǎng)下不同的網(wǎng)絡(luò)場(chǎng)景提出了基于鏈路穩(wěn)定、內(nèi)容感知、傳輸時(shí)效以及移動(dòng)支持的關(guān)聯(lián)控制機(jī)制,以解決不同場(chǎng)景下的突出問(wèn)題。本文主要研究?jī)?nèi)容如下： ●基于鏈路穩(wěn)定的關(guān)聯(lián)控制問(wèn)題研究 本文首先考慮了泛在網(wǎng)的低速移動(dòng)網(wǎng)絡(luò)場(chǎng)景中的關(guān)聯(lián)控制問(wèn)題。當(dāng)終端在泛在網(wǎng)中停留或低速移動(dòng)時(shí),由于網(wǎng)絡(luò)間遷移和鏈路質(zhì)量下降而引起的頻繁的重關(guān)聯(lián)會(huì)導(dǎo)致延遲的增長(zhǎng),另外泛在網(wǎng)終端分布的不均衡性也會(huì)導(dǎo)致網(wǎng)絡(luò)負(fù)載失衡進(jìn)而影響整個(gè)網(wǎng)絡(luò)效率。由頻繁切換帶來(lái)的延遲和網(wǎng)絡(luò)過(guò)載引起的鏈路擁塞是影響鏈路穩(wěn)定的兩個(gè)主要因素。已有的關(guān)聯(lián)控制研究工作主要關(guān)注于如何減少終端單次切換延遲和增加關(guān)聯(lián)時(shí)長(zhǎng),很少有研究將移動(dòng)終端切換延遲和網(wǎng)絡(luò)負(fù)載均衡等影響鏈路穩(wěn)定的主要因素進(jìn)行聯(lián)合考慮。為此,我們研究了基于鏈路穩(wěn)定的泛在網(wǎng)關(guān)聯(lián)控制問(wèn)題,該問(wèn)題的目標(biāo)是通過(guò)智能的接入點(diǎn)和用戶間的配對(duì)來(lái)降低終端切換次數(shù)并均衡負(fù)載。由于此問(wèn)題具有NP-hard復(fù)雜性,我們分別提出一個(gè)集中式近似算法和一個(gè)分布式近似算法將問(wèn)題加以解決。最后,基于真實(shí)軌跡數(shù)據(jù)的仿真實(shí)驗(yàn)驗(yàn)證了算法的性能。 ●基于內(nèi)容感知的關(guān)聯(lián)控制問(wèn)題研究 本文接著考慮了泛在網(wǎng)的準(zhǔn)靜態(tài)網(wǎng)絡(luò)場(chǎng)景中關(guān)聯(lián)控制問(wèn)題。泛在網(wǎng)業(yè)務(wù)環(huán)境極其復(fù)雜,其關(guān)聯(lián)控制機(jī)制需亟待解決的問(wèn)題是如何滿足異構(gòu)業(yè)務(wù)差異化的服務(wù)質(zhì)量需求并同時(shí)均衡網(wǎng)絡(luò)負(fù)載。由于傳統(tǒng)網(wǎng)絡(luò)環(huán)境中業(yè)務(wù)的單一性,已有的關(guān)聯(lián)控制研究工作主要關(guān)注與如何提高網(wǎng)絡(luò)吞吐量并在終端間建立公平性,很少有工作將不同業(yè)務(wù)具有差異化的QOS需求這個(gè)因素引入其中,以及進(jìn)一步將業(yè)務(wù)差異化QoS需求和網(wǎng)絡(luò)負(fù)載均衡聯(lián)合考慮。為此,我們研究了基于內(nèi)容感知的泛在網(wǎng)關(guān)聯(lián)控制問(wèn)題,以滿足不同業(yè)務(wù)的差異化QOS需求并同時(shí)均衡網(wǎng)絡(luò)的負(fù)載。由于該問(wèn)題具有NP-hard復(fù)雜性,我們提出兩個(gè)近似算法將問(wèn)題加以解決。最后,算法在多種業(yè)務(wù)并存的網(wǎng)絡(luò)中進(jìn)行仿真驗(yàn)證,仿真結(jié)果證明了算法的性能。 ●基于傳輸時(shí)效的關(guān)聯(lián)控制問(wèn)題研究 同樣是在泛在網(wǎng)的準(zhǔn)靜態(tài)網(wǎng)絡(luò)場(chǎng)景中,由于泛在網(wǎng)中數(shù)據(jù)量的激增以及對(duì)數(shù)據(jù)傳輸時(shí)效性要求的提高,其關(guān)聯(lián)控制機(jī)制還需解決如何提高數(shù)據(jù)傳輸量以及如何減少數(shù)據(jù)傳輸延遲的問(wèn)題。這對(duì)泛在網(wǎng)中廣泛存在的實(shí)時(shí)類業(yè)務(wù)尤為重要。一方面受傳統(tǒng)網(wǎng)絡(luò)業(yè)務(wù)規(guī)模和容量的限制,已有的致力于提高傳輸時(shí)效性的研究工作主要針對(duì)單個(gè)網(wǎng)絡(luò)接入點(diǎn)或單條鏈路；另一方面受傳統(tǒng)網(wǎng)絡(luò)業(yè)務(wù)單一性的影響,已有的關(guān)聯(lián)控制研究工作主要關(guān)注提高網(wǎng)絡(luò)的吞吐量和負(fù)載均衡,很少有研究將傳輸時(shí)效性考慮其中,以及進(jìn)一步對(duì)各個(gè)實(shí)時(shí)類業(yè)務(wù)進(jìn)行聯(lián)合資源配置。為此,我們研究了基于傳輸時(shí)效的泛在網(wǎng)關(guān)聯(lián)控制問(wèn)題,該問(wèn)題目的在于設(shè)計(jì)一種根據(jù)業(yè)務(wù)傳輸時(shí)效將網(wǎng)絡(luò)接入點(diǎn)和終端智能匹配以來(lái)提高業(yè)務(wù)傳輸時(shí)效,保證實(shí)時(shí)業(yè)務(wù)的連續(xù)性。由于該問(wèn)題被證明為具有NP-hard復(fù)雜性。我們提出兩個(gè)近似算法將問(wèn)題加以解決。我們最后對(duì)算法進(jìn)行了網(wǎng)絡(luò)仿真實(shí)驗(yàn),仿真結(jié)果證明了算法的性能。 ●基于移動(dòng)支持的關(guān)聯(lián)控制問(wèn)題研究 本文最后考慮了泛在網(wǎng)的高速移動(dòng)網(wǎng)絡(luò)場(chǎng)景中關(guān)聯(lián)控制問(wèn)題。由于高速移動(dòng)網(wǎng)絡(luò)的網(wǎng)絡(luò)拓?fù)渥兓杆?負(fù)載均衡不是其主要目標(biāo)。高速移動(dòng)網(wǎng)絡(luò)場(chǎng)景的典型代表是車載網(wǎng),本文以車載網(wǎng)為例研究泛在網(wǎng)中此場(chǎng)景下關(guān)聯(lián)控制問(wèn)題。過(guò)多的切換次數(shù)會(huì)給車載終端業(yè)務(wù)帶來(lái)很高的傳輸延遲,同時(shí)無(wú)線信道的不穩(wěn)定性隨著車載終端位置的劇烈變化也會(huì)進(jìn)一步惡化,導(dǎo)致網(wǎng)絡(luò)鏈接頻頻中斷。另一方面,不同于傳統(tǒng)無(wú)線網(wǎng)絡(luò)環(huán)境,車載網(wǎng)的間歇性特征使得一切力圖獲得長(zhǎng)期穩(wěn)定傳輸帶寬的努力落空。當(dāng)前很少有關(guān)于車載網(wǎng)關(guān)聯(lián)管制機(jī)制的研究工作,這使得車載網(wǎng)一直飽受鏈路不穩(wěn)定以及低吞吐量的困擾,很大程度上影響了其商業(yè)部署。為此,我們研究了基于移動(dòng)支持的關(guān)聯(lián)控制問(wèn)題,該問(wèn)題目標(biāo)為利用有效的算法減少終端切換次數(shù),降低鏈路中斷頻率以及提高網(wǎng)絡(luò)吞吐量。我們提出兩個(gè)在線啟發(fā)式算法來(lái)解決此問(wèn)題。這兩個(gè)算法實(shí)現(xiàn)簡(jiǎn)單,利于部署。最后,通過(guò)車載網(wǎng)仿真環(huán)境的實(shí)驗(yàn)驗(yàn)證了算法的性能。
[Abstract]:The ubiquitous network extends the concept of the traditional communication network, breaks through the boundaries between different communication networks, and integrates the closed network individual into a whole. This is not only the superposition of the network area, but also the convergence of the terminal, the network service, the fusion of data and protocols. In the pan network, the heterogeneous subnets blend with each other. The coordination provides a transparent seamless mobile access environment; on the other hand, all kinds of business adaption fully interact to create rich business resources together. These greatly improve the network service capability and provide a wider selection extension to the terminal. However, the complexity and expansion of the network and business environment The selection space has also brought many new challenges to network resource management. One of the prominent difficulties is how to configure the relationship between the terminal and the network intelligently and effectively, which is the network association control mechanism.
There are many feasible solutions to the research of network association control mechanism. However, the emergence of ubiquitous network has introduced more new features for the network environment and put forward new requirements for network services. Therefore, the ubiquitous network association control mechanism will not be limited to existing boundaries, but will be solved on a larger problem dimension. This includes not only how to relate the terminal to the network that the access conditions are satisfied, but also to the problem of cooperative optimization in the complex network and business environment. Therefore, this paper studies the problem of the ubiquitous network association control, in order to put forward an effective solution to improve the utilization of network resources and ensure the service experience of the terminal. In this paper, we propose an association control mechanism based on link stability, content perception, transmission prescription and mobile support to solve the prominent problems in different scenarios, respectively. The main contents of this paper are as follows:
Research on link stability based association control
In this paper, the problem of association control in a low-speed mobile network scene is first considered. When the terminal is in the ubiquitous network, the frequent heavy reconnection caused by the migration of the network and the decline of the link quality will lead to the delay, and the unbalance of the distribution of the ubiquitous network terminal will cause the network load to lose. The balance also affects the entire network efficiency. The link congestion caused by the delay and network overload caused by frequent handover is the two main factor affecting link stability. The existing research work on association control mainly focuses on how to reduce the terminal single switch delay and increase the association time, and few studies have switched delay and network to the mobile terminal. The main factors that affect the link stability are the main factors that affect the link stability. Therefore, we study the link stability based ubiquitous network association control problem. The goal of this problem is to reduce the number of terminal switching times and balance the load through the intelligent access points and the pairing of users. Since this problem has NP-hard complexity, we divide the problem. We do not propose a centralized approximation algorithm and a distributed approximation algorithm to solve the problem. Finally, the performance of the algorithm is verified by the simulation experiment based on the real trajectory data.
Research on content-based association control
This paper then considers the problem of association control in the quasi-static network scene of ubiquitous network. The ubiquitous network business environment is extremely complex. The problem that the association control mechanism needs to be solved urgently is how to meet the service quality requirements of heterogeneous services and balance the network load at the same time. Joint control research focuses on how to improve network throughput and establish fairness between terminals. Few jobs introduce the different QOS requirements of different services, and further combine business differentiation QoS requirements with network load balancing. The problem of network association control is to satisfy the differential QOS requirements of different services and balance the load of the network at the same time. Because of the NP-hard complexity of the problem, we propose two approximate algorithms to solve the problem. Finally, the algorithm is simulated in a variety of network coexistence networks, and the simulation results prove the performance of the algorithm.
Research on the problem of correlation control based on transmission prescription
In the quasi static network scene of ubiquitous network, the correlation control mechanism needs to solve the problem of how to increase the amount of data transmission and how to reduce the delay of data transmission due to the increase of data quantity in ubiquitous network and the improvement of data transmission requirements. This is particularly important for the widespread existence of real-time class services in the ubiquitous network. On the one hand, due to the limitation of the scale and capacity of traditional network services, the existing research work devoted to improving the timeliness of transmission mainly focuses on single network access points or single links; on the other hand, influenced by the traditional network business simpleness, the existing research work on association control focuses on improving the throughput and load balancing of the network. Few studies have considered transmission timeliness, and further joint resource allocation for various real-time class services. To this end, we studied the problem of ubiquitous network association control based on transmission limitation. The purpose of this problem is to design a kind of service transmission to improve the service transmission of network access points and terminal intelligence according to the service transmission prescription. Time delay ensures the continuity of real time services. Since the problem has been proved to have NP-hard complexity, we propose two approximate algorithms to solve the problem. Finally, we have carried out a network simulation experiment on the algorithm. The simulation results prove the performance of the algorithm.
Research on the problem of association control based on mobile support
In this paper, the problem of association control in the high speed mobile network scene of ubiquitous network is considered. Because the network topology changes rapidly in the high-speed mobile network, the load balancing is not the main goal. The typical representative of the high-speed mobile network scene is the vehicle network. This paper takes the vehicle network as an example to study the problem of association control in this scene. Too much The number of switching times will bring a high transmission delay to the vehicle terminal service, while the instability of the wireless channel will further deteriorate as the vehicular terminal position changes, which leads to the frequent interruption of the network links. On the other hand, the intermittent characteristics of the vehicle network make all efforts to achieve long-term stability, unlike the traditional wireless network environment. The effort to transmit bandwidth has fallen short. There are few research work on the vehicle network association control mechanism. This makes the vehicle network always suffering from link instability and low throughput, which greatly affects its commercial deployment. Therefore, we study the problem of association control based on mobile support, which aims to make use of the effectiveness of the problem. The algorithm reduces the number of terminal switching, reduces the link interruption frequency and improves the network throughput. We propose two online heuristic algorithms to solve this problem. These two algorithms are simple and easy to deploy. Finally, the performance of the algorithm is verified by the experiment of the vehicle network simulation environment.

【學(xué)位授予單位】：中國(guó)科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP393.07

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 曹穎;;校園無(wú)線網(wǎng)絡(luò)規(guī)劃與建設(shè)探討[J];計(jì)算機(jī)光盤(pán)軟件與應(yīng)用;2012年13期

2 李文t，

本文編號(hào)：1823974