Cognitive Coexistence of Non-cooperative Heterogeneous Wireless Systems

非合作异构无线系统的认知共存

• 批准号: 327285-2013
• 负责人: Dobre, Octavia
• 金额: $ 2.99万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=637646
• 关键词: Cognitive; Coexistence; Non; cooperative; Heterogeneous

Spectrum sharing has been recently seen as a vital ingredient in enhancing the performance of existing wireless systems, satisfying the growing demand for spectrum access, and enabling new applications. For example, cellular systems can provide improved coverage and capacity via femto cells, in which the spectrum used by the main network is shared over a local area covered by a low power base station. Furthermore, spectrum sharing is receiving increasing attention as a solution to the paradox of spectrum scarcity amid the existence of broad expanses of inefficiently utilized licensed spectrum. In such scenarios, coexistence problems arise between the primary and secondary users of the spectrum, as well as between multiple collocated secondary systems. Usually, the medium access control and physical layer standards do not support inter-network communications, and cooperative sharing strategies are very limited. Hence, heterogeneous wireless systems will need to coexist while operating independently without cooperation. The aim of this research program is to develop an integrated physical, link, medium access control, and network layer approach for the coexistence of non-cooperative heterogeneous systems. This will incorporate real-time multi-dimensional spectrum awareness information (number and type of transmitters, their parameters, location, and traffic characteristics) into the design of the communications protocols. The anticipated research results will strongly impact the evolution of the future radio frequency environment in which increasingly diverse populations of wireless and cognitive radio-based systems will coexist in the same bands. An efficient utilization of the spectrum will thus be enabled, which will open opportunities for new stakeholders, and provide effective alternatives for the wireless industry and consumers to cope with the continuously growing demand for data traffic and services.

频谱共享最近被视为增强现有无线系统性能，满足对频谱访问不断增长的需求并启用新应用程序的重要成分。例如，蜂窝系统可以通过FEMTO细胞提供改善的覆盖范围和容量，其中主网络使用的频谱在低功率基站覆盖的局部区域共享。此外，在存在较广泛利用的许可光谱的广泛膨胀的情况下，Spectrum共享正在受到越来越多的关注，作为解决频谱稀缺悖论的一种解决方案。在这种情况下，频谱的主要和次要用户以及多个共处的二次系统之间存在共存问题。通常，中等访问控制和物理层标准不支持网络间的通信，并且合作共享策略非常有限。因此，异质的无线系统将需要在不合作的情况下独立操作时共存。该研究计划的目的是开发一种集成的物理，链接，中等访问控制和网络层方法，以与非合并异质系统共存。这将将实时多维频谱意识信息（发射器的数量和类型，其参数，位置和流量特征）的设计纳入通信协议的设计。预期的研究结果将强烈影响未来无线和认知无线电系统种群越来越多样化的无线频率环境的演变。因此，将启用对频谱的有效利用，这将为新的利益相关者打开机会，并为无线行业和消费者提供有效的替代方案，以应付对数据流量和服务的不断增长的需求。