CAREER: Towards Cognitive Communications in Wireless Networks

职业：无线网络中的认知通信

• 批准号: 0845812
• 负责人: Jian Ren
• 金额: $ 40万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-02-15 至 2016-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0845812&HistoricalAwards=false
• 关键词: CAREER; Towards; Cognitive; Communications; Wireless

Today's cognitive radio is characterized by its capability to perceive the existence of spectrum holes through spectrum sensing, and then transmitting on these unutilized frequencies. While each individual cognitive radio is very capable and can make independent decisions, lack of user coordination and network control raises serious issues in efficiency, security and resource waste in wireless environments. These problems call for fundamental changes in cognitive communication network design. In this research, we introduce and develop the concept of cognitive network, which is defined as an intelligent wireless system that can collect and analyze the current network conditions, and then make real-time corresponding changes in network operating parameters, such as modulation scheme, transmission power, carrier frequencies, data frame structure, coding schemes, resource allocation and security management. We provide a comprehensive framework for the development of cognitive networks from a network-centric perspective. More specifically, we plan to: (i) Introduce a novel architecture for cognitive network; (ii) Design efficient and secure resource management protocols; (iii) Develop highly efficient and resilient anti-interference/interception systems through multi-layer diversity; (iv) Develop cryptographic algorithms and protocols for anonymous routing and network integrity.The proposed research on cognitive networks introduces innovative methodologies on architecture development, system design, secure and efficient network management. It will significantly improve spectral efficiency, security and interoperability of communications between versatile wireless devices, and therefore provides an ideal human-technology platform for e-commerce, national security, environmental protection, health monitoring, as well as many future applications that can benefit from fast and reliable information exchange.

当今认知无线电的特点是能够通过频谱感知感知频谱空洞的存在，然后在这些未被利用的频率上进行传输。虽然每个认知无线电都非常有能力并且可以做出独立决策，但缺乏用户协调和网络控制会在无线环境中引发严重的效率、安全和资源浪费问题。这些问题要求认知通信网络设计发生根本性的变化。在本研究中，我们引入并发展了认知网络的概念，它被定义为一个智能的无线系统，可以收集和分析当前的网络状况，然后实时地做出相应的变化，网络的运行参数，如调制方案，发射功率，载波频率，数据帧结构，编码方案，资源分配和安全管理。我们提供了一个全面的框架，从网络为中心的角度认知网络的发展。更具体地说，我们计划：（i）引入一种新的认知网络的体系结构;（ii）设计高效和安全的资源管理协议;（iii）通过多层分集开发高效和弹性的抗干扰/拦截系统;（四）开发用于匿名路由和网络完整性的加密算法和协议。架构开发、系统设计、安全高效的网络管理。它将显著提高多功能无线设备之间通信的频谱效率、安全性和互操作性，从而为电子商务、国家安全、环境保护、健康监测以及许多可以从快速可靠的信息交换中受益的未来应用提供理想的人机技术平台。