论文标题:WCDMA基站布局和网络仿真研究
WCDMA Cell Planning and Network Simulation Research
论文作者
论文导师 何晨,论文学位 硕士,论文专业 通信与信息系统
论文单位 上海交通大学,点击次数 329,论文页数 95页File Size2627K
2007-01-01论文网 http://www.lw23.com/lunwen_409387/
WCDMA; Cell Planning; Heuristic Algorithm; Set Covering; Tabu Search; Radio Resource Management; Soft Handover; Power Allocation; OPNET; Static Simulation; Dynamic Simulation
WCDMA作为第三代移动通信标准之一,是GSM网络的自然演进,具有良好的兼容性及可扩展性,因此受到广大运营商的青睐和使用。WCDMA系统所提供的可变速率、多业务能力,为运营商提供了坚实的技术平台以及广阔的市场空间,同时也为网络规划及优化带来了很大的挑战。由于频谱等无线资源日益紧缺和无线网络建设的巨大花费,合理精确的网络规划和优化变得越来越重要。 通常WCDMA网络规划可以分为三部分,初始网络的基站布局,详细的网络仿真和运营时的网络优化。基站布局是网络规划最初也是最重要的工作。它根据规划场景覆盖、容量和质量需求,结合传播环境,业务分布和用户特性等模型,使用自动布局算法进行覆盖规划,容量规划和干扰分析;从基站位置、天线配置和功率配置等候选网络配置选项中,选择确定网络配置,并且统计出网络的服务性能和建设成本。更进一步,干扰导致容量受限的WCDMA网络需要有效使用无线资源,应用先进的管理算法。例如,软切换由于能够实现信号平稳传输,减少“乒乓”效应,避免同频在重叠覆盖区的强干扰,提高网络覆盖和容量,而成为WCDMA系统的重要组成部分。 在实现基站布局和无线资源管理算法的配置和使用之后,详细的网络仿真能够全面准确地统计出网络覆盖、吞吐量和时延等参数,用于验证基站布局配置的有效性,无线资源管理算法的合理性,并指出网络规划的优
As one standard of the 3rd generation mobile communication, WCDMA is the evolution of the current GSM network. And it is widely accepted by operators due to its excellent compatibility and scalability. WCDMA system can support variable data rate and multi-type services, which not only provide operators stable technique platform and wide market share, but also bring big challenge in network planning and optimization. Due to the scarcity of radio resource and huge costs of network deployment, reasonable and accurate network planning becomes more and more important. Generally, WCDMA network planning consists of three steps, initial cell planning, detail network simulation and network optimization during operation. Cell planning is the initial and primary work of network planning. According to coverage, capacity and service quality requirements in planning scenario, using models of radio propagation, traffic distribution and user characteristics, cell planning apply automatic cell planning algorithms to plan coverage, capacity and analyze interference. Then select network configuration from base station location, antenna and power configuration, and finally compute the network service statistics and deployment cost. Further, the interference-caused capacity-limited WCDMA network should make good use of radio resource and
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