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.     

Improving methane production from wheat straw by digestate liquor recirculation in continuous stirred tank processes

Wheat straw is an abundant, cheap substrate that can be used for methane production. However, the nutrient content in straw is inadequate for methane fermentation. In this study, recycling digestate liquor was implemented in single-stage continuous stirred tank processes for enrichment of the nutrient content of straw with the aim of improving the methane production. The VS-based organic loading rate was set at 2 g/(L d) and the solid retention time at 40 days. When wheat straw alone was used as the substrate, the methane yields achieved with digestate liquor recycling was on average 240 ml CH₄/g VS giving a 21% improvement over the processes without recycling. However, over time, the processes suffered from declining methane yields and poor stability evidenced by low pH. To maintain process stability, wheat straw was co-digested with sewage sludge or supplemented with macronutrients (nitrogen and phosphorous). As a result, the processes with digestate liquor recycling could be operated stably, achieving methane yields ranging from 288 to 296 ml CH₄/g VS. Besides, the processes could not be operated sturdily with supplementation of macronutrients without digestate liquor recycling. The highest methane yield (296 ± 16 ml CH₄/g VS) was achieved by co-digestion with sewage sludge plus recycling of digestate liquor after filtration (retention of nutrients and microorganisms). This was comparable to the maximum expected methane yield of 293 ± 13 ml CH₄/g VS achieved in batch test. The present study therefore demonstrated that digestate liquor recycling could lead to a decreased dilution of vital nutrients from the reactors thereby rendering high process performance and stability.     

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。     

MSC池技术及组网应用

在WCDMA R5阶段,继承了R4的软交换架构思想,而且提出了Iu-flex技术,引入了池域的概念,一个池域就是由多个同类网元组成的共同控制一个或多个位置区的网元集合。核心网节点作为资源池,RNC可以连接多个MSC/SGSN网元、池域,打破了以往RNC与MSC间一对一的控制关系。RNC可被池中的多个网元管理,UE可以按照负载均衡的原则注册到池中的任意一个节点。     

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。     

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。