USSD网关计费系统设计与实现

非结构化补充数据业务USSD(Unstructured Supplementary Service Data)是一种基于GSM移动通信网络的新型交互式会话业务。USSD业务能够在非WAP(Wireless Application Protocol)设备上提供类似WAP手机的上网功能，大大利用了现有网络资源。文中对USSD业务概念、流程及特点作了阐述：在USSD网关通信结构的基础上阐述了USSD网关的计费流程，提出了计费系统的设计方法，并给出具体实现。     

USSD业务及应用

为了吸引新的用户,寻找新的利润增长点,移动领域的竞争重点已从网络覆盖逐步转向业务竞争,国内运营商纷纷积极开发移动数据业务。USSD作为一种基于GSM网络的新型交互式数据业务,引起了国内外运营商普遍关注,本文对USSD业务的概念、特点进行简单地介绍,对USSD在移动电子商务、移动定位等业务中的应用解决方案进行了详细地分析和阐述。     

USSD网关及在预付费国际漫游业务中的应用

本文首先介绍了USSD业务特点,然后分析了USSD网关的工作机制、主要功能及信息元素,最后给出将USSD网关用于预付费国际漫游业务中的应用实例。     

USSD网关及在预付费国际漫游业务中的应用

本首先介绍了USSD业务特点，然后分析了USSD网关的工作机制、主要功能及信息元素，最后给出将USSD网关用于预付费国际漫游业务中的应用实例。     

USSD系统与应用简介

USSD是一种基于GSM网络的新型交互式数据业务，能够满足不同层次用户的需要，并可以为运营商带来一定的收益。本文讨论了USSD的基本概念和特点，并结合实际应用介绍与分析了USSD系统的网络结构、业务流程、系统主要功能与相关应用。     

基于USSD的远程微波设备监控系统

USSD（Unstructured Supplementary Service Data）即非结构化补充数据业务,是一种新型的基于GSM网络的交互式数据业务,具有响应速度快、交互能力强等特点。文中介绍了USSD的特点,提出了一套基于USSD业务的微波设备远程监控系统的设计方案,阐述了监控系统的结构和各部分的组成。微波设备远程监控系统为微波设备的维护监控提供了一种实用的技术手段,使维护更加方便,能更好地保障设备的可靠运行。     

基于USSD协议的移动智能网业务管理平台

本文首先介绍了GSM(Global System for Mobile Communications)非结构化补充数据业务USSD(Unstructured Supplementary Service Data)的工作机制,然后介绍了USSD的业务模式及特点,最后提出了一种可以方便用户使用的基于USSD协议的移动智能网业务管理平台的实现方案.     

无结构补充数据业务

介绍了GSM信令通信管理子层的补充业务实体为支持无结构补充数据业务（USSD）提供的服务；以此为基础，详细介绍了用户及网络侧发起的USSD操作过程。     

USSD业务及应用

为了吸引新的用户，寻找新的利润增长点，移动领域的竞争重点已从网络覆盖逐步转向业务竞争，国内运营商纷纷积极开发移动数据业务。USSD作为一种基于GSM网络的新型交互式数据业务，51起了国内外运营商普遍关注，本文对ussD业务的概念、特点进行简单地介绍，对ussD在移动电子商务、移动定位等业务中的应用解决方案进行了详细地分析和阐述。     

LTR信令集群移动台控制器

讲述LTR集群移动通信系统的基本原理,介绍了LTR信令格式及工作过程,给出了实现LTR信令集群移动台控制器的硬件框图和程序流程图。自行研制的LTR信令车载移动台在美国UNIDEN公司生产的F.A.S.T网中得到了验证。     

基于USSD和SMS的增值服务平台的设计与实现

SMS和USSD作为GSM网络的两种典型数据业务，得到了越来越多的服务提供商的关注。文章提出了基于USSD和SMS的信息平台的设计思路和设计方案。同时对其进行了简单的分析。该信息平台充分发挥了USSD和SMS各自的优势．便于服务提供商向移动用户提供更方便、快捷的服务。     

基于智能网关的数字家庭网络系统架构设计

基于智能网关的数字家庭网络系统,主要应用于智能网关的管理,能实现内部网络协议转换和QoS（网络服务质量）动态配置。该系统以PLC及UWB技术原理为基础,基于RC32434的MIPS＋Linux系统平台,多SSID和VLAN技术,增强型X-10的总线技术及VPN技术的应用,实现了家庭网关的多业务和多种端口技术、三网合一的内部网络协议转换技术、智能路由技术及网络数据包过滤技术。     

软交换系统七号信令设计

基于公共交换电话网络大规模应用七号信令的实际情况,对软交换体系结构、信令网关、初始会话协议(SIP)进行了描述。并针对下一代网络的分层思想、软交换的互联互通结构和呼叫流程,提出了利用软交换交换核心平台和信令网关及SIP相互配合实现七号信令的解决方案。描述了软交换系统的七号信令软件结构、信令网关的软件结构,阐述了相应呼叫流程的实现。     

Resource Allocation for Aggregate Multimedia and Healthcare Services over Heterogeneous Multi-Hop Wireless Networks

Nowadays, the pervasive wireless networks enable ubiquitous high-rate wireless access from everywhere. In this work, we discuss the integration of complementary wireless techniques to construct a personal moving network. The personal wireless devices (  smartphones, camcorders, and netbooks) and even medical monitoring sensors are interconnected with a wide-area backbone through a local multi-mode gateway. The mobile nodes in a personal moving network move in group and are provided seamless connectivity through a backhaul relay channel from the local gateway toward the backbone network. In some specific scenarios, the local gateway can be as simple as a multi-radio smartphone. In this study, we investigate the construction and resource allocation for a personal moving network. Aggregate multi-service traffic of interactive data, conversational video, and electrocardiography (ECG) monitoring are considered in the resource allocation. We develop a stochastic Petri net to model the access selection scheme, which is logically clear and easy to follow. The flow-level performance is evaluated in terms of new connection blocking probability and handoff dropping probability. We further analyze the packet-level performance of the heterogeneous two-hop network. Considering the urgency of medical services, a non-preemptive priority policy is applied to mitigate the impact of background traffic and prioritize the transmission of ECG data.     

Performance analysis of CSMA/CD networks with a buffered gateway

A single CSMA/CD (carrier sense multiple access with collision detection) local area network which is connected to other networks by a gateway with finite buffer capacity is described. Its performance is analyzed by using an embedded Markov chain. For the service discipline of packets queuing at the gateway, three cases are considered: G-limited service discipline, E-limited service discipline, and G-decrementing service discipline. The state transition of the system is analyzed, and the Laplace-Stieltjes transforms of the probability distribution functions of idle and busy periods are derived. Equations for average performance measures are formulated. Numerical examples are used to examine the effect of external traffic on the packet delay and throughput at terminals as well as at the gateway for each service discipline. The results show that as a service discipline at the gateway, the limited service disciplines are preferable to the decrementing service discipline in that they more fairly allocate the channel bandwidth to terminals and the gateway. The numerical results also show that the performance of the gateway is substantially improved by using a higher retransmission rate at the gateway     

Remote management framework of home network based on EPON

As the extension of service provider network,the home network is the last section of the service delivery process, so it must have the characteristics of the operator network, that is, stable performance, manageable, maintainable, quality of service, security, and extendable.In this paper, with the integration of the new access network technology Ethemet passive optical network (EPON) and the remote network management protocol, TR-069 protocol, addressed by the Digital Subscriber Line (DSL)Forum, a remote management fiamework of home network based on EPON is presented.Then, a prototype system is also provided to realize the functions of TR-069 protocol on residential gateway.     

A Flexible QoS-aware Service Gateway for Heterogeneous Wireless Networks

The integration of different types of wireless access networks, or heterogeneous wireless networks (HWN), is emerging. This article investigates in particular how a combination of UMTS (Universal Mobile Telecommunications System) cellular networks, wireless LAN ad hoc networks, and DVB-H (digital video broadcasting - handheld) broadcasting networks, called UWD networks for short, is constructed and managed to provide users with QoS-aware services. Given the complexity of the UWD networks, a novel policy-based service gateway is proposed. As a software framework sitting over and communicating with the UWD network, this UWD service gateway makes network management decision by reasoning over a set of predefined policies that describe the behaviors of the UWD network. Network variables such as bandwidth, delay, and mobility in policies are fuzzified using fuzzy control theory to make the service gateway (as well as the whole UWD network) more flexible and robust. Both the prototype implementation and the evaluation results indicate the feasibility and effectiveness of the system