基于Iu_Flex的MSC Pool技术分析

本文简要介绍了MSC Pool技术的基本原理．分析了MSC Pool所用到的关键技术．重点讨论D接口信令的流量和MSC Pool的组网规划．指出了MSC Pool可能存在的安全隐患。     

融合SGSN/MME Pool组网方案探讨

Pool是移动核心网的关键技术之一,也是提升网络安全的重要手段。本文从SGSN/MME Pool的基本原理入手,着重对融合SGSN/MME Pool组网中的关键问题进行了分析,并给出了相应的部署建议。     

MSC Pool负载均衡问题研究

介绍并详细说明了MSC Pool负载均衡算法的触发条件和基本处理流程,分析了几种典型的负载均衡算法,并结合设备的支持情况,提出了MSC池组化部署的一些建议。     

传媒行业微信公众号传播效果分析研究

本文以浙江广电旗下的所有微信公众号为研究对象,通过量化指数和调研访谈,结合新榜指数和清博指数俩者优点,对其进行改良,并加入是否原创、点赞率等新的量化指标,同时提出了传播力指数100分制,最终形成了一套符合浙江广电实际传播情况的传播力指数和评价指标体系。     

Design and fabrication of a new high gain multilayer negative refractive index metamaterial antenna for X‐band applications

This article presents the design of a planar high gain and wideband antenna using a negative refractive index multilayer superstrate in the X‐band. This meta‐antenna is composed of a four‐layer superstrate placed on a conventional patch antenna. The structure resonates at a frequency of 9.4 GHz. Each layer of the metamaterial superstrate consists of a 7 × 7 array of electric‐field‐coupled resonators, with a negative refractive index of 8.66 to 11.83 GHz. The number of layers and the separation of superstrate layers are simulated and optimized. This metamaterial lens has significantly increased the gain of the patch antenna to 17.1 dBi. Measurements and simulation results proved about 10 dB improvement of the gain.     

MSC POOL技术在黑龙江移动网络中的应用

随着GSM网络规模的逐年增大．移动核心网的网络安全。资源共享和负荷均衡等需求变得越来越迫切,MSCPOOL技术的出现很好地解决了这些需求。本文在介绍7MSCPOOL的技术原理和组网方案后．结合黑龙江移动MSCPOOL的成功实施经验对这种全新的网络架构方案进行了阐述和探讨。     

POOL技术在GPRS核心网中的探讨和实现

通过分析传统GPRS核心网的缺点，结合计算机网络的POOL技术，GPRS核心网中引入新的SGSNPOOL技术，将传统的SGSN组合成SGSNPOOL，以此来改善和提高GPRS核心网的整体性能。     

SGSN Pool规划部署研究

简要阐述了SGSN Pool技术的优势和原理,详细阐述了SGSN Pool规划部署基本原则及覆盖区域、容量、局数据等规划问题,对当前SGSN Pool部署存在的问题进行了详细分析并提出了相关建议。     

On the performance of the 2D planar metamaterial structure

The performance of a 2D metamaterial (MTM) structure using finite element method (FEM) and transmission line model (TLM) is investigated in this paper. The size of the proposed unit cell is 4 mm × 4 mm to resonant around 12 GHz. The unit cell is constructed from a patterned patch and solid ground plane that are connected with via through an FR-4 substrate. The unit cell is characterized from 11 GHz to 14 GHz in terms of S-parameters, effective refractive index, and dispersion properties. It is found that the proposed unit cell behaves like unbalanced case of a passive constant k band elimination filter. Moreover, it is found that the unit cell exhibits no negative refractive index (NRI) over a wide range of frequencies; however, it shows a less than 1 refractive index over then same frequency range. A theoretical investigation based on TLM is developed to extract the values of the basic lumped, RLC, elements network.     

SGSN Pool部署的关键问题探讨

深入分析了SGSN Pool组网技术在现网的部署实施中的网路组织、NRI设置、负载迁移等关键问题;结合网络实际以及不同厂家的设备特点,提出相应的解决方案。