Security Strategy for Mobile Police Information System Using SMS

As the well-developed civilian wireless network infrastructure was built and the mobile devices becoming increasingly widespread, many mobile police information systems were established to provide information for police anywhere and anytime. The (SMS) Short Message Service is a widely used communication means in these applications. But lacking of security for SMS makes it unsuitable for transmitting these confidential data. In this paper, we discuss the security requirements of the mobile police information system firstly, and then propose a security strategy for mobile police information system to transmit information confidentially over the public mobile network using SMS as a bearer, and describe the authentication and communication protocol in detail. Lastly a performance comparison of the mobile police information system working in secure mode with that working in ordinary mode is given.     

一种适于HTTP数据还原的QS改进算法

为了更快速、准确地对HTTP应用数据进行还原,文中研究了改进的单模式匹配算法。对BM算法、BMH算法和QS算法进行了分析,并重点研究了QS算法的改进思路,最后提出了一种适用于HTTP应用数据还原的CIQS算法。CIQS算法考虑了HTTP模式串的字符特点,改进了模式串的字符比较顺序,并对坏字符跳跃思想进行了改进,增大了跳跃距离。实验结果表明,CIQS算法有效减少了匹配次数,相比其他几种算法有更好的时间性能。     

Achieve Adaptive Data Storage and Retrieval Using Mobile Sinks in Wireless Sensor Networks

Wireless Personal Communications - In WSNs (Wireless Sensor Networks), data storage and retrieval is a challenging problem because of the limited resource and the short communication radius of the...     

移动搜索技术及其业务发展

在对国内外移动搜索业务发展和推动因素进行介绍的基础上,分析了目前比较流行的移动搜索关键技术,包括移动搜索的分类、移动搜索的原理、信息过滤技术、信息过滤模型等,并揭示了移动搜索技术在市场需求引导下的发展走向.     

移动网络中短消息响应时间的研究

分析研究了春节期间移动网络中短消息的响应时间,利用数理统计的方法建立了短消息响应时间与其业务流量之间的数学模型。利用该模型可以对短消息中心的处理能力进行仿真研究,指导移动网络的优化和升级。     

江苏移动短信业务质量全面分析

针对江苏移动短信业务质量的投诉进行了全面统计分析,列举了短信失败原因及占比情况和失败成因;通过信令监测手段结合信令过程分析、用户终端分析,实际现场测试跟踪,对短信业务重复收发和收发失败原因分析定位,网络优化和信令监测系统建设提出了合理的改进建议,对江苏移动网络质量保障和提高服务质量发挥了重要的作用。     

移动网络中HTTP视频流终端数据分析及应用

伴随移动通信技术的发展,越来越多的用户选择通过移动网络随时随地观看网络视频,移动视频业务迅速增长.在现有的无线视频传输方式中,由于TCP的可靠性以及易穿透防火墙和网络地址转化等优点,基于TCP的HTTP流逐渐成为网络视频的主流传榆方式.另一方面,用户对业务体验需求的上升,也给移动数据的传输带来巨大挑战.该文通过采集和分析HTTP流的终端数据,获到了HTTP流在HSPA+中传输特性及关键参数的特征,分析结果表明其视频块传输速率变化与自回归模型近似,并在此基础上,提出一种视频等级自适应控制算法,能够有效地改善用户体验.     

Mobile control and management of computer networks using SMS services

Network administrators are always concerned about either not getting notified or late notification about occurrence of a sudden failure in the network, or not being able to come up with a proper solution even if informed. The reason behind such a concern is that the network administrators are constrained by physical presence on the network site or access to the Internet. The present article introduces a novel method for mobile control and management of computer and telecommunication networks. In this method, an application program is installed on one of the systems under management network or any system which can access the Internet. Then, using SNMP, the application program collects the information required by the network administrator and communicates the same to him/her via the most comprehensive communicational service; namely, Short Message Service (SMS). In like manner, the network administrator can send his/her commands to the application software via SMS. Having received the commands and using SNMP, the application software executes them on those pieces of equipment intended by the network administrator. By this method, network administrators will be able to control and manage their networks fully just by sending a short message rather than needing access to the Internet or having to be present physically on the spot.     

搜索引擎的检索性能及应用

本文首先讨论了Ｉｎｔｅｒｎｅｔ搜索引擎的三种类型。然后基于 Ｆｏｒｒｅｓｔｅｒ研究和 Ａｌｅｘａｎｄｅｒ　Ｌｅbｅｄｅｖ实验,分析讨论了主要搜索引擎各自的检索特点和性能,并对在科研中单个搜索引擎的应用进行了探讨。这对于科研人员选择检索方法可能会有所帮助。     

移动搜索业务研究

描述了移动搜索的概念,详细分析移动搜索的业务特点、业务分类和业务模型,初步定义移动搜索的基本功能。从运营商的角度对业务的盈利模式以及运营商与价值链各方的合作模式进行了探讨。     

手机搜索的淘金之旅

在无线世界的“满园春色”当中,手机搜索这支“红杏”早已引得墙外众多眼球的关注。搜索引擎早已成为众多互联网业务中不可替代的看家法宝,它的使用率、影响力及商业价值不言而喻,更催生了Google、百度这样的神话。而当搜索从“阵地战”转入“移动战”之后,如虎添翼的手机搜索蕴含的杀伤力更加前所未有,引得业界各方风生水起,又一个奇迹等待上演。在预见到手机搜索这个盛况空前的金矿后,还要对其本质和发展潜心钻研,方能权衡利弊,谋篇布局,在淘金之旅中拔得头筹。     

Mobile Search With Multimodal Queries

The popularity of mobile devices, such as PDAs and SmartPhones, has grown rapidly over the last couple of years. Though most users still perform searches using desktop computers, it is expected that more and more people will also search the Web while they are on the move. In addition to text-based keyword queries, mobile devices can support richer and hybrid queries such as images, audio, video, and their combinations. In this paper, we will discuss mobile search systems that support image queries and audio queries, covering typical designs for mobile visual and audio search, as well as the opportunities and challenges. Specifically, we will present an in-depth study of two real systems we have developed: product image categorization and mobile ringtone search, which use image queries and audio queries, respectively. Experimental results on real-life data demonstrate their effectiveness and efficiency.     

A Mobile App Search Engine

With the popularity of mobile apps on mobile devices based on iOS, Android, Blackberry and Windows Phone operating systems, the numbers of mobile apps in each of the respective native app stores are increasing in leaps and bounds. Currently there are close to one million mobile apps across these four major native app stores. Due to the enormous number of apps, both the constituents in the app ecosytem, consumers and app developers, face problems in ‘app discovery’. For consumers, it is a daunting task to discover the apps they like and need among the huge number of available apps. Likewise, for developers, enabling their apps to be discovered is a challenge. To address these issues, Mobilewalla (MW) an app search engine provides an independent unbiased search for mobile apps with semantic search capabilities. It has also developed an objective scoring mechanism based on user and developer involvement with an app. The scoring mechanism enables MW to provide a number of other ways to discover apps—such as dynamically maintained ‘hot’ lists and ‘fast rising’ lists. In this paper, we describe the challenges of developing the MW platform and how these challenges have been mitigated. Lastly, we demonstrate some of the key functionalities of MW.     

基于ICE与HTTP Tunnel技术的NAT/FW穿越方案

在现代网络中,越来越多的主机被部署在NAT和防火墙(FW)之后,这就要求VoIP、P2P等通信软件必须具备穿越NAT/FW的能力,才能实现端到端的数据传输.现有的STUN、TURN、ICE等方案虽然可以穿越大部分NAT/FW,但对有端口或协议限制的防火墙却无能为力.本文提出了将ICE和HTTP Tunnel技术相结合的穿越方案,设计并实现了可跨平台运行的HTTP Tunnel模块来配合ICE进行穿越.实验证明,在防火墙只开放80端口这种苛刻的条件下,该HTTP Tunnel模块也能够成功穿越大部分防火墙,实现数据流的稳定传输.     

A Case for Cloud-Based Mobile Search

Mobile search is beset with problems because of mobile terminal constraints and also because its characteristics are different from the traditional Internet search model. This paper analyzes cloud computing technologies-especially mass data storage, parallel computing, and virtualization-in an attempt to solve technical problems in mobile search. The broad prospects of cloud computing are also discussed.     

Using SMS for Communication with IoT Devices

Mobile Networks and Applications - This paper is in the context of Smart Cities and Internet of Things (IoT). We proposed a novel approach in communication of IoT devices via SMS messages. This can...     

吉林移动关于除夕夜短信重发问题分析

短信业务质量问题是用户经常投诉的问题,如何准确分析定位短信业务问题是运营商网管维护部门非常关心的问题,本文给出了短信重发问题的分析定位过程,以及具体的解决方案.吉林移动的信令监测系统由北京中创信侧科技股份有限公司全面建设维护,本文详细说明了监测系统的应用分析过程及解决过程.     

个性化移动元搜索引擎研究与设计

移动搜索已成为最重要的移动互联网应用之一,智能终端技术和搜索引擎技术的发展为改进用户的搜索体验提供了可能。通过分析移动用户的个性化搜索需求,提出了个性化移动搜索代理模型,结合移动智能终端的能力和商业搜索引擎,提供了符合用户个性化搜索习惯和多样化内容需求的移动搜索服务。     

面向服务移动社交网络中基于信任的分布式服务组合方法

针对服务不透明性、信任需求主观性及移动参与者连接机会性对面向服务移动社交网络中可信服务组合带来的问题,提出基于信任的分布式服务组合方法.该方法基于格模型建立分布式服务信任评估框架,分别在组件和组合级评估服务信任度以避免不可信的数据传输;通过分析服务依赖关系,实现满足全局和局部信任约束可信服务选择;基于蒙特卡洛方法建立可信路径选择、优化和容错算法传输服务评估调用信息.实验结果表明所提方法在服务评估开销低,在路径选择成功率和信任度高,是适应面向服务移动社交网络的服务组合方法.     

移动Agent在信息检索中的应用研究

在分析传统信息检索模式弱点的基础上,将移动Agent技术引入信息检索领域,讨论了"基于移动Agent的信息检索系统"的系统方案,以期实现检索的高效率、低开销以及智能化,文章的最后分析了它的关键技术以及应用前景.