无线智能播控技术在农村应急广播中的应用

农村应急广播是我国各项政策的重要宣传平台,也是政务信息传播的重要平台。在灾害事件来临之际,可通过农村应急广播来传播信息。农村应急广播的建设,能有效提高政府职能,让政策落实到基层,提高管理效率。文中深入分析了无线智能播控技术在农村应急广播中的应用,希望对相关人员有所助力。     

无线智能播控技术在农村应急广播中的应用实践

农村应急广播是国家与各省份传播政务信息的重要组成部分,也是宣传国策的重要平台.在危机事件来临时,农村应急广播可以起到至关重要的作用.农村应急广播建设能够进一步提升政府职能,让每一项举措落实到基层,提升整体管理效力,对于国家的整体发展至关重要.使用先进的技术手段提升农村应急广播的功能性非常有必要.国家相关规定明确指示,农村应急广播建设应当按照不同的技术方案进行.基于此,探讨无线智能播控技术在农村应急广播中的应用实践.     

泰州市应急广播播控管理平台建设

以提高应急广播播控管理水平为前提,针对泰州市应急广播播控管理平台的建设展开分析。介绍该平台项目建设的必要性和建设目标,阐述应急广播播控管理平台具有的功能,总结应急广播播控管理平台的创新点。通过完善的应急广播播控管理平台,支持泰州市应急广播系统的全面发展。     

“村村响”农村广播系统——应急广播在农村广播中的应用

基于对地方构建的“村村响农村广播系统”的调研和对比,本文对典型“村村响农村广播系统”的系统功能、基本组成、系统架构及接收终端进行了梳理和总结,归纳了系统中应用的关键技术,介绍了工程建设和管理维护中涉及的标准。结合中国现有广播技术体制,论文进一步对典型“村村响农村广播系统”的特点、意义进行了分析和思考,并提出了相关的建议。     

VSAT技术在应急广播中的应用

本文在本文介绍了VSAT技术的发展及其在广电应急广播中的应用,并结合广电网络实际情况,对VSAT传输技术的应用和故障案例进行了分析。     

射频唤醒技术在应急广播中的应用

射频唤醒技术与无线广播技术相结合,具有电源依赖性低、覆盖范围大等特点,能够很好的补充和完善现有的应急广播体系。本文从该技术的引入、工作模式、技术特点等做了介绍,并探讨了该技术服务于应急广播体系的可行性。     

中波广播发射技术在应急通信中的应用

快速响应、广泛覆盖、高可靠性与稳定性、灵活性与可扩展性,是应急通信系统的4大关键需求。这些需求对于确保在自然灾害、社会安全事件等紧急情况下的通信畅通至关重要,直接关系到救援效率与受灾群众的安危。应急通信系统在设计与建设时必须充分考虑这些需求,以应对各种复杂多变的灾害环境,为救援行动提供强有力的通信保障。在分析应急通信需求的基础上,分析中波广播发射技术在应急通信中的应用。     

调频广播发射系统在应急广播中的应用和探索

随着国家应急广播的诞生,各省份纷纷开展应急广播体系的建设,如何将应急信息传递到灾民手中,解决信息传输最后一公里的难题,广播技术人员献言献策.基于江苏交通广播的覆盖发射网络,经过少量的技术升级和改造,利用调频广播发射系统,搭建了江苏应急广播的发射平台.两个多月的运营以来,获得了群众和社会的广泛好评,这也为下一步的应急广播技术改造增添了信心,同时也为国家应急广播探索提供了有益借鉴.     

新媒体在应急广播中的应用分析

新媒体最近几年发展迅猛,大众也越来越倚重在各种智能终端上利用新媒体进行信息获取和社交应用.传统广播媒体进行应急广播时有着高效覆盖、直接的优点,但在交互性、控制等方面却存在不足.在互联网新媒体飞速发展的今天,如何充分利用新媒体进行应急广播成为当下需要研究的一个新课题.本文就如何发挥新媒体的特性,在应急广播中的应用进行分析探讨.     

AI和5G技术在应急广播中的应用

本文对AI、5G技术和我国的国家应急广播体系建设进行了简单介绍,并结合我国应急广播的发展,提出了AI和5G技术在应急广播领域的应用.     

基于全媒体的智能应急广播平台构建研究

全媒体传播时代,如何才能取得突发事件应急报道的最佳效果,已成为当前政府亟待解决的紧迫问题.本文通过分析当前应急传播的现状,结合媒体智能应急广播的功能需求,提出了系统的总体架构,并由此研究了系统管理平台和调度控制系统,最后提出应将应急报道工作看作一个系统工程进行科学管理,希望为智能应急广播平台的构建提供参考.     

Efficient broadcasting protocols for regular wireless sensor networks

The wireless sensor network (WSN) has attracted lots of attention recently. Broadcast is a fundamental operation for all kinds of networks and it has not been addressed seriously in the WSN. Therefore, we propose two types of power and time efficient broadcasting protocols, namely one‐to‐all and all‐to‐all broadcasting protocols, for five different WSN topologies. Our one‐to‐all broadcasting protocols conserve power and time by choosing as few relay nodes as possible to scatter packets to the whole network. Besides, collisions are carefully handled such that our one‐to‐all broadcasting protocols can achieve 100% reachability. By assigning each node a proper channel, our all‐to‐all broadcasting protocols are collision free and efficient. Numerical evaluation results compare the performance of the five topologies and show that our broadcasting protocols are power and time efficient. Copyright © 2005 John Wiley & Sons, Ltd.     

Load-balanced broadcast routing in wireless Ad-hoc networks

In wireless Ad-hoc networks, where mobile hosts are powered by batteries, the entire network may be partitioned because of the drainage of a small set of batteries.Therefore, the crucial issue is to improve the energy efficiency, with an objective of balancing energy consumption.A greedy algorithm called weighted minimum spanning tree (WMST) has been proposed, in which time complexity is O(n2).This algorithm takes into account the initial energy of each node and energy consumption of each communication.Simulation has demonstrated that the performance of the proposed algorithm improves the load balance and prolongs the lifetime.     

Towards broadcast redundancy minimization in duty‐cycled wireless sensor networks

Broadcast is an essential operation in wireless sensor networks. Because of the necessity of energy conservation, minimizing the number of transmissions is always a challenging issue in broadcasting scheme design. This paper studies the minimum‐transmission broadcast problem in duty‐cycled wireless sensor networks where each sensor operates under active/dormant cycles. To address the problem, our proposed scheme, Broadcast Redundancy Minimization Scheduling (BRMS), finds a set of forwarding nodes, which minimizes the number of broadcast transmissions. Then, it constructs a forest of sub‐trees based on the relationship between each forwarding node and its corresponding receivers. A broadcast tree is constructed ultimately by connecting all sub‐trees with a minimum number of connectors. Theoretical analysis shows that BRMS obtains a lower approximation ratio as well as time complexity compared with existing schemes. A set of extensive simulations is conducted to evaluate the performance of BRMS. The results reveal that BRMS outperforms others and its solution is close to the lower bound of the problem in terms of the total number of transmissions. Copyright © 2016 John Wiley & Sons, Ltd.     

Efficient multi‐hop wireless broadcast protocol in vehicular networks using automated threshold function design

Vehicular networking applications often use multi‐hop wireless broadcasting as a primary data dissemination mechanism. Therefore, protocols that efficiently and thoroughly propagate application data while adapting to a wide range of network density, vehicle distribution pattern, channel quality, and other conditions are critical for vehicular communications. Here, we design the Statistical Vehicular Broadcast (SVB) protocol to efficiently distribute data via multi‐hop broadcast in vehicular networks. First, we present an automated optimization technique for the design of threshold functions in statistical broadcasting methods. Next, we compare and analyze known statistical techniques, including different fundamental methods, assessment delay algorithms, and failsafe mechanisms. All combinations of these techniques are given threshold functions optimized using the proposed automated procedure then are evaluated in a wide range of simulations. High‐level statistical design principles and recommendations are established based on analysis of these results. Finally, we apply those principles to design SVB. It is evaluated in JiST/SWANS and is shown to achieve a high target reachability level while consuming less bandwidth than similar protocols across urban and highway vehicular networking scenarios.Copyright © 2014 John Wiley & Sons, Ltd.     

一种高效的无线自组网全网可靠广播协议

现有大部分的无线自组网广播协议采用最小虚拟骨干子网进行全网广播,能最小化广播的总发送次数。但是,由于未考虑无线链路的不可靠性,这些协议在实际网络中的广播效率并不高。为此,提出了一种高效的全网可靠广播协议（ENWRB）,该协议采用网络编码技术减少单跳广播的重传次数,并通过一种基于链路感知的虚拟骨干网选择算法产生更高效的广播骨干网。仿真结果表明,在确保所有节点成功接收广播消息的相同前提下,ENWRB协议的效率显著高于HCA(Hierarchical CDS-based Algorithm)协议。     

云计算技术在广播电视网中的应用

介绍了云计算的基本原理和核心技术,阐述了云计算在广播电视网中数字电视互动的技术应用。分析了云计算在广电行业中的典型应用,云计算模式通过整合广电系统中的计算资源,将各种应用建在云端,降低了终端的要求,同时能够有效地扩展和升级,推进三网融合。     

基于DVB-C有线数字电视平台的应急广播系统

介绍了基于DVB-C有线数字电视平台的应急广播系统,依托现有有线数字电视播控与传输平台,应急广播指令与音频信号复用到数字电视播控平台.利用有线电视共缆传输,终端设备的技术实现与数字电视机顶盒基本一致.以全新的理念全面实现了音频/文字信息数字化、播控自动化、管理智能化、扩展自由化,与现有HFC网络完全融合,是广电运营商建设应急广播系统的理想的解决方案.     

基于数字播控技术的电视台播出系统优化研究

伴随着我国现代化社会的深化发展,科技的飞速进步,越来越多的家庭中都拥有了数字电视,数字播控技术在之后的时间里,一定是向着创新和标准的方向前进。目前,我国在数字播控技术上的钻研还在逐渐深化当中,本文将针对数字播控技术基础上的电视台播出系统进行优化研究,以期为电视台节目的播出可靠性带来有效的参考价值。     

一种无线资源智能调控系统的设计与实现

随着无线网络业务尤其是数据类业务的快速发展,无线网络资源调控和优化工作面临越来越大的压力和挑战。提出并实现一种无线资源智能调控系统,从多维度对话务统计、现网资源配置参数等大数据进行分析,实现业务量精准预测,调控方案智能生成,并通过MML接口自动下发网元执行,实现无线资源的精确调度和配置。