打造高品质的HSPA网络

根据HSPA组网采用的混合载波方式或独立载波方式的特点,分析影响网络质量的主要因素,给出如何提高HSPA吞吐率的建议,以打造高品质的HSPA网络。     

HSPA＋关键技术及性能评估

就TD—SCDMA系统而言,HSPA技术有两种增强型方式：一种为多载波捆绑技术,另一种为HSPA＋。其中HSPA＋包括分组业务持续连接（CPC）、增强CELL—FACH、层2增强、下行64QAM和MIMO等5种子技术。本文将对HSPA＋涉及的各项关键技术进行详细分析,并对引入各项技术后带来的性能增益进行评估。     

Betulinic Acid Modulates the Expression of HSPA and Activates Apoptosis in Two Cell Lines of Human Colorectal Cancer

Betulinic acid (BA) is a pentacyclic triterpene usually isolated from botanical sources. Numerous studies have reported the inhibitory effect of BA against human colorectal cancer cells (CRC). However, its effect on the expression of the molecular chaperone HSPA is unclear. The aim of this research is to investigate the anti-cancer activities of BA purified from Piper retrofractum and study its effect on the expression of HSPA in colorectal cancer HCT116 and SW480 cells. The viability of both cancer cells was reduced after they were treated with an increasing dosage of BA. Flow cytometry assay revealed that levels of cell apoptosis significantly increased after incubation with BA in both cancer cells. Pro-apoptotic markers including Bax, cleaved-caspase-3 and cleaved-caspase-9 were increased while anti-apoptotic marker Bcl-2 was decreased after BA treatment. Western blot also showed that the expression of HSPA fluctuated upon BA treatment, whereby HSPA was increased at lower BA concentrations while at higher BA concentrations HSPA expression was decreased. Preliminary molecular docking assay showed that BA can bind to the nucleotide binding domain of the HSP70 at its ADP-bound state of the HSP70. Although further research is needed to comprehend the BA-HSPA interaction, our findings indicate that BA can be considered as potential candidate for the development of new treatment for colorectal cancer.     

3GPPHSPA＋技术标准发展及未来演进

介绍了HSPA＋的多载波、M2M、MDT、ANR等新技术和HSPA＋的新业务需求,探讨了智能终端对网络带来的影响,并论述了I-HSPA扁平化架构。     

HSPA／HSPA＋现状分析及展望

总结了HSPA及其演进（HSPA＋）标准的发展历程,描述了全球HSPA／HSPA＋市场的现状,从终端消费者和和产业生态链的角度,分析了HSPA／HSPA＋市场蓬勃发展的原因,并结合运营商的成功案例,展望了HSPA／HSPA＋市场可持续性发展的前景。     

TD-SCDMA HSPA/HSPA+技术无线组网研究

第三代移动通信系统在中国的正式商用推动了各种新技术的快速应用,这些技术的引入给已有的TD-SCDMA无线网络带来了不同程度的影响,本文分析了HSPA/HSPA+技术给TD-SCDMA 无线网络规划带来的影响。     

浅析HSPA＋终端测试概况与挑战

HSPA＋作为HSDPA／HSSPA有效的演进技术,极大地提升了网络的效率和可承载速率。文章简略介绍了HSPA＋的发展现状及主要技术特性,并在此基础上进一步讨论了HSPA＋终端测试的关键点和难点,最后介绍了一种HSPA＋终端的测试方案。     

WCDMA HSPA技术演进思考

本文分别从核心技术、峰值速率、网络结构、演进方式等方面,对WCDMA HSPA后向演进的三种技术HSPA+、LTE、LTE Advanced进行对比分析,然后站在网络运营和网络平滑演进的角度,对WCDMA HSPA的未来演进思路进行展望。     

移动网络演进及其对网络的影响

本文将探讨HSPA＋和LTE等更高带宽移动业务下传送和回程网络的演进需求,也有一些对如何增加ARPU的建议。