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第三代移动通信系统TD-SCDMA无线资源管理技术的研究.doc
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第三代移动通信系统TD-SCDMA无线资源管理技术的研究.doc
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江苏信息职业技术学院毕业论文
摘要
无线传感器网络是由传感器节点设备通过特定的方式构成的无线网络,以
此达到对位于覆盖网络区域的对象信息进行协作感知、采集、处理。无线传感器
网络技术将物理世界和信息技术结合起来,随着科技不断发展,它的巨大应用价
值越发突出显现出来,其应用领域涵盖军事、工业过程、环境监测等。信息采集
网络、数据分布网络、任务管理中心三模块构成无线传感器网络,它的主要组成
部分是融合了传感器、数据处理单元、通信模块的网络节点。作为通信模块核心
部分的无线传感器网关节点在无线传感器网络的重要地位是显而易见的,为满足
无线传感器网络对所传感数据要求的周期性和同步性特点,研究不同应用场景下
的无线传感器网络网关节点是非常有必要的。为了保证数据实时高效传输,降低
节点功耗,同时使得网关的生命周期最大化,新型第三代移动通信技术是一个很
好的选择。
3G 即第三代移动通信技术,和前面几代主要不同的是:极大的提高数据传输
速率,同时通信质量上也有了更好的保证,系统容量进一步扩升,通过 OTT 业
务对移动终端用户提供更多更高级的服务将会变得更加可能。第三代移动通信系
统已经成为目前常用的无线数据传输方式,也是物联网中数据传输方式发展的必
然趋势。TD-SCDMA,三大 G 技术里面的一种,这项 3G 标准融合了很多国际
领先技术是由中国独自制定,它具有低辐射、良好的频谱利用率、对业务支持灵
活的特点。随着国家政策的支持,TD 产业联盟的建立,TD-SCDMA 商业化不断
成熟。在这样的形势下研究实现基于 TD-SCDMA 的嵌入式传感器网络是非常必
要的。
本论文在熟悉嵌入式 linux 操作系统和 TCP 协议的基础上,首先介绍无线传
感器网络的研究背景现状和应用场景,其次简述 Linux 开发、TCP 传输控制协议;
接着详细阐述如何实现 TD-SCDMA 模式的 3G 传输模块在 ARM 平台上的移植;
进一步完成 TD-SCDMA 数据通道的构造建立,通过测试分析其传输性能,并与
理论值作对比,提出 3G 通信模块的实用价值;最后将基于 TD-SCDMA 的 3G
数据通信模块与传感器网络相融合。
关键词:无线传感器网络;3G;嵌入式;TD-SCDMA
江苏信息职业技术学院毕业论文
Research on TD-SCDMA radio resource
management technology in the third generation
mobile communication system
Abstract
Wireless sensor network is a specific way through the wireless network consists
of sensor nodes to achieve cooperative sensing equipment, the information object on
the overlay network area acquisition, processing technology. Wireless sensor network
combines the physical world and the information technology, with the continuous
development of science and technology, great value of its application is becoming
more and more prominent emerged, the applications include military, industrial
process, environmental monitoring and so on. Network information collection, data
distribution network, task management center three modules of wireless sensor
network, the main part of it is the integration of sensor, data processing unit, network
node communication module.For the important position of wireless sensor node
gateway communication module in the core part of the wireless sensor network is
obviously, in order to meet the needs of wireless sensor networks for periodic and
synchronization characteristics of sensor data requirements, wireless sensor network
gateway nodes of different application scenarios is necessary. In order to ensure
real-time data transmission efficiency, reduce at the same time the gateway node
power consumption, the lifetime maximization model, the third generation mobile
communication technology is a good choice.
3G is the third generation of mobile communication technology, and previous
generations of the main difference is: to improve data transmission speed greatly, and
communication quality ensure a better system capacity to further expand rise, through
the OTT business to provide more advanced services to mobile users will become
江苏信息职业技术学院毕业论文
more likely. The third generation mobile communication the system has become one
of the most commonly used way of wireless data transmission,.TD-SCDMA is also
the inevitable trend of the development of the Internet of things in the way of data
transmission, a three G technology, the 3G standard of the integration of many
international leading technology is composed of Chinese alone formulation, it has low
radiation, goodThe spectrum utilization of business support and flexible features.
With the support of national policy, the establishment of TD industry alliance,
TD-SCDMA business continues to mature. In such a situation on the implementation
of embedded sensor network based on TD-SCDMA is very necessary.
This paper is based on the familiar embedded Linux operating system and TCP
protocol, introduces the research background and application scenarios of wireless
sensor networks, the second development of Linux, the TCP transmission control
protocol; then describes how to realize the transplantation of 3G transmission module
of TD-SCDMA model on the ARM platform; further constructed TD-SCDMA data
channel establishment analysis of the transmission performance, through the test, and
compared with the theoretical value, the practical value of 3G communication module;
finally, based on TD-SCDMA 3G data communication module and sensor
network.Fusion.
Key words: wireless sensor network; 3G; embedded; TD-SCDMA
江苏信息职业技术学院毕业论文
目录
1 绪论............................................................................................................................1
1.1 研究背景和研究意义.......................................................................................1
1.2 第三代通信系统的介绍...................................................................................1
1.3 国内外研究现状及分析...................................................................................3
1.3.1 国外在该方向的发展现状和分析.........................................................3
1.3.2 国内在该方向的发展现状和分析.........................................................4
2 TD-SCDMA 简述 .......................................................................................................4
2.1 TD-SCDMA 基本特点 .....................................................................................4
2.2 TD-SCDMA 关键技术 .....................................................................................6
2.2.1 时分双工.................................................................................................6
2.2.2 多址方式.................................................................................................7
2.3 TD-SCDMA 系统结构 .....................................................................................8
2.3.1TD-SCDMA 网络结构 ............................................................................8
2.3.2 UTRAN 通用协议模型 ..........................................................................9
3 无线资源管理及 DCA 技术研究 ...........................................................................10
3.1 无线资源管理的基本概念.............................................................................10
3.1.1 无线资源管理的模块组成及功能.......................................................10
3.1.2 TD-SCDMA 无线资源管理特点 .........................................................12
3.2 动态信道分配.................................................................................................13
3.3 动态信道分配算法研究.................................................................................14
3.3.1 中心控制式 DCA .................................................................................14
3.3.2 基于单业务的 DCA .............................................................................14
3.3.3 基于交叉时隙干扰的 DCA .................................................................15
3.4 TD-SCDMA 数据通道构造 ...........................................................................15
3.5TD-SCDMA 传输模块性能分析 ....................................................................17
4 结论..........................................................................................................................19
参考文献......................................................................................................................20
江苏信息职业技术学院毕业论文
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