【摘要】：由于日益增加的對電磁頻譜資源的需求,世界范圍內(nèi)對頻譜使用的競爭日趨激烈,而頻譜卻是不可再生的寶貴資源,為了更加合理的利用頻譜資源,為了更加有利于相關部門對頻譜資源的管理和分配,本文主要討論了基于無線傳感器網(wǎng)絡電磁頻譜信息監(jiān)測的網(wǎng)絡傳輸協(xié)議的設計與實現(xiàn),以期對空間頻譜信息能夠有實時的了解和掌控。文中首先給出研究背景,說明了本系統(tǒng)實現(xiàn)的意義,旨在實現(xiàn)一個對頻譜進行實時監(jiān)測的系統(tǒng),并能夠對空間中的頻譜信息進行檢測、識別以及信號源定位等功能。接著簡要介紹無線傳感器網(wǎng)絡、頻譜監(jiān)測等幾個重要的概念之后,給出了國內(nèi)外當前的研究現(xiàn)狀。然后討論了本系統(tǒng)所使用的三層兩級網(wǎng)絡架構,即基于任務管理中心、網(wǎng)關節(jié)點和感知節(jié)點三層網(wǎng)絡節(jié)點,描述了各個網(wǎng)絡節(jié)點所處的網(wǎng)絡角色以及用途,描述了該網(wǎng)絡架構的優(yōu)點,網(wǎng)絡節(jié)點的硬件構成,簡單介紹了網(wǎng)絡編程實現(xiàn)的原理,并分別給出了該兩級網(wǎng)絡連接實現(xiàn)的原理。本文詳細闡述了基于TCP/IP協(xié)議集的模型,介紹了本系統(tǒng)在該模型的應用中,物理層鏈路層使用已經(jīng)十分成熟的WIFI,WCDMA,TD-SCDMA等協(xié)議,在傳輸層網(wǎng)絡層使用TCP/IP協(xié)議集中的各協(xié)議,并重點討論了根據(jù)業(yè)務需求,從實際應用出發(fā)的應用層的協(xié)議,包括網(wǎng)絡管理部分和具體業(yè)務方面的協(xié)議。在文章的最后,提出了由于信道、網(wǎng)絡環(huán)境、業(yè)務數(shù)據(jù)量大等客觀原因的存在,頻譜顯示的效果受到很大影響,在分析系統(tǒng)各個環(huán)節(jié)所帶來的影響之后,對該原因進行剖析,并設計校準機制、流量控制機制,解決了通信信道帶來的系統(tǒng)顯示電平缺陷的問題,并大幅度減少在不穩(wěn)定網(wǎng)絡條件下的網(wǎng)絡延遲。
[Abstract]:Because of the increasing demand for the electromagnetic spectrum resources, the competition for the use of the spectrum is becoming increasingly fierce in the world, but the spectrum is a valuable non-renewable resource, in order to make more rational use of the spectrum resources, In order to be more conducive to the management and allocation of spectrum resources, this paper mainly discusses the design and implementation of network transmission protocol based on electromagnetic spectrum information monitoring in wireless sensor networks. In order to have a real-time understanding and control of spatial spectrum information. In this paper, the research background is first given, and the significance of the system is explained. The purpose of this system is to realize a real-time monitoring system for spectrum, and it can detect, identify and locate the spectrum information in space. Then several important concepts such as wireless sensor network and spectrum monitoring are briefly introduced, and the current research situation at home and abroad is given. Then it discusses the three-layer and two-level network architecture, which is based on task management center, gateway node and perceptual node, and describes the network roles and uses of each network node. This paper describes the advantages of the network architecture, the hardware structure of the network node, briefly introduces the principle of network programming, and gives the realization principle of the two-stage network connection. In this paper, the model based on TCP/IP protocol set is described in detail. In the application of this model, the physical layer link layer uses WIFI,WCDMA,TD-SCDMA protocol, which is very mature. TCP/IP protocols are used in the transport layer network layer, and the application layer protocols based on the business requirements are discussed, including the network management part and the specific service protocols. At the end of the paper, it is put forward that the effect of spectrum display is greatly affected by the existence of the objective reasons, such as channel, network environment, large amount of traffic data, etc. After analyzing the influence of every link of the system, the paper analyzes the reason. The calibration mechanism and flow control mechanism are designed to solve the problem of system display level defect caused by communication channel, and the network delay under unstable network condition is greatly reduced.
【學位授予單位】：西安電子科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM935.21

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本文編號：2406473