通用移动通信系统

通用移动通信系统（UMTS）为移动数据用户提供了较广阔的覆盖范围，而无线局域网（WLAN）能在局部热点地区提供较高的接入带宽。

UMTS networks provide broad coverage for the packet domain users , whereas the WLAN provides higher bandwidth in restricted hot-spot areas .

作为3G的候选方案之一，通用移动通信系统（UMTS）采用宽带码分多址作为其无线传输技术。

As a family member of 3G , UMTS adopts WCDMA as its radio transmission technology .

深入分析了UMTS（通用移动通信系统）中定位服务架构的实现。

Location services ( LCS ) architecture in UMTS is analyzed .

在通用移动通信系统（UMTS）基于策略的服务质量（QoS）机制的基础上，提出一种面向下一代移动网络的端到端分层QoS架构。

After an introduction of the policy-based quality of service ( QoS ) mechanisms of universal mobile telecommunication system ( UMTS ), a new policy-based QoS Framework was proposed for the next generation mobile networks .

在通用移动通信系统（UMTS）中，无论在无线接入部分还是在核心网部分，QoS的保证都是关键性问题。

Not only in radio access network ( RAN ), but also in core network ( CN ) of Universal Mobile Telecommunication System ( UMTS ), the QoS guarantee is a very important issue .

针对移动台在异构网络之间切换性能不理想的问题，提出基于通用移动通信系统（UMTS）和无线局域网（WLAN）构建的具有接入控制单元（ACU）的异构网络模型。

This paper proposed an efficient handoff algorithm for heterogeneous networks , which are constructed by wireless local area network ( WLAN ) and universal mobile telecommunications system ( UMTS ) .

本文首先使用NS-2网络仿真器对多用户情形下的通用移动通信系统（UMTS）进行了全面的性能分析。

In this paper , we perform a system-level simulative evaluation of Universal Mobile Telecommunications System ( UMTS ) with multi-service via Network Simulator 2 for a newly built scenario .

在这种情况下，正如地面有线网和3G移动网的相互融合，卫星网和地面网的差别也将逐渐消失而共存于一个全球覆盖的通用移动通信系统（UMTS）。

In this scenario , distinctions between terrestrial networks and satellite networks , as well as between fixed networks and 3G mobile networks , will cease to coexist in the universal mobile telecommunication system ( UMTS ) .

通用移动通信系统的业务质量

QoS of Universal Mobile Telecommunication System Communications ICs

一种基于集中监控技术的通用型移动式车载通信系统

A Universal On-board Mobile Communication System Based on Centralized Monitoring Technology