New Hybrid Access Method for Femtocell through Adjusting QoS

The increasing number of mobile users raises issues about coverage extension in some areas such as rural zones, indoor or underground locations： one of suggestion solution to accommodate this growing of mobile user is femtocell. Femtocell have been attracting considerable attention in mobile communications, it is a small base station that install to improve the indoor coverage of a given cellular and to enhance user＇s capacity. Call admission control and resource allocation infemtocell＇s hybrid mode are an essential performance promotion issue. Developing methods for femtocell utilization is very comparative nowadays. The two major limitations of wireless communication are capacity and range. The main contribution of our paper is developing resource allocation scheme that can manage the femocell resources between subscriber （femtocell user） and non-subscriber （macrocell user in order to maximizing the system utilizations, we provide a mechanism that leads to serve more users by admitting more subscribers basing on adjusting QoS of the connected users.     

贝尔金音之源六合一车载音乐基站 iPhone有车族的不二选择

贝尔金的“音之源六合一车载音乐基站”,是我所见过的汽车与数码（或者说是手机）最佳的结合产物,当然,除了名字拗口一些之外,这真的是一款让人使用起来感觉非常便利的产品。对于那些拥有一台iPhone或是iPod的有车一族来说,如果你的爱车没有Aux in设计,也许你经常会烦恼没法随时收听到自己喜欢的流行音乐。只要拥有贝尔金的这套车载套件,你就能将里面的音乐通过FM射频方式,通过车内的音响播放出来。     

基于WLAN的矿井多媒体综合通信网络系统

针对矿山井下现有通讯系统与监视、监测和监控系统各自封闭,互不兼容,且无法实现移动人员与设备的实时识别和定位的现状,提出了基于WLAN的矿井多媒体综合通信网络系统方案,构建了集移动语音通信、视频监视、设备监控、环境监测和人员定位于一体的多网合一多媒体综合通信网络系统,设计开发了智能无线通信基站。文中介绍了矿井多媒体无线综合通信网络系统的拓扑结构、功能及特点,详细论述了智能无线通信基站的设计。     

基于VxWorks的系统故障快速恢复设计

针对CDMA通讯系统基站侧的重要单板——基带信号处理单板的系统故障需要在极短时间内进行自恢复的要求,设计了一种基于VxWorks操作系统的故障快速恢复方法,包括操作系统的任务、消息队列、信号量等操作设计,同时对设计前后系统故障恢复情况进行了对比测试、验证。     

通信基站智能换热设备

伴随着社会的不断发展,手机已经成为人们生活中不可或缺的一部分。手机的业务量需求在不断增加,运营公司的基站规模、设备数量也在不断扩大。现实中,绝大多数的通信基站均采用无人值守,为了保证通信设备长期正常地运行,使基站处于标准的环境温度,是非常必要的,所以几乎每个通信基站都配备了空调,而这些空调长年处于运行状态,电费支出不断增大,极大造成了电力资源的浪费。     

TD-SCDMA系统中的单基站定位技术

无线定位技术是第三代移动通信研究的一个重要方面.本文简要介绍了基于TD-SCDMA标准的单基站无线定位技术和TD-SCDMA系统中终端位置如何确定.     

Q-learning based heterogenous network self-optimization for reconfigurable network with CPC assistance

With the irreversible trend of the convergence and cooperation among heterogeneous networks, there emerge some important issues for network evolution. One of them is to reconfigure network elements such as cellular base stations (BSs) or access points (APs) of wireless local area networks (WLANs) according to the real-time network environment, in order to maximize the cooperation gain of different networks. In this paper, we consider cognitive pilot channel (CPC) as an assistant to enable cooperation among heterogeneous networks. Based on the widely used reinforcement learning algorithm, this paper has proposed the heterogeneous network self-optimization algorithm (HNSA) to solve the adaptation problem in reconfigurable systems. In the algorithm, distributed agents perform reinforcement learning, and make decisions cooperatively with the help of CPC in order to reduce the system blocking rate and improve network revenue. Finally our simulation proves the anticipated goal is achieved.     

高通进军家用3G飞蜂窝基站市场

高通公司近日向Global Wireless Technologies共享了原本高通专享的CDMA飞蜂窝芯片技术,允许飞蜂窝在全球范围内的研发和销售。“高通将在2010年推出首个家用3G飞蜂窝基站模型。”高通商业拓展部高级经理NickKarter表示。高通拥有CDMA飞蜂窝技术的专利,但它并不想做单纯的芯片供应商,     

多制式携手走向LTE

通过兼容并包的基站,国内电信业欲以高效率低成本踏上一条从2G到3G再到LTE的平滑演进之路。     

基于GPRS的通信基站电源与环境监控装置

在简述了无人值守通信基站电源与环境监控装置主要功能及原理框图基础上,重点阐述了装置的关键电路设计.