认知无线电是一种新兴的无线通信技术，它可以通过感知和理解无线电频谱环境来自适应地调整其传输参数和频率，以提高频谱利用率和无线电频谱的管理效率。电视频段是一种非常有价值的频谱资源，但由于其受到广播电视业务的保护，因此只有在特定的时间和地点才能使用。认知无线电技术可以帮助有效地利用电视频段，提高频谱利用率和无线电频谱的管理效率。
ISO/IEC/IEEE 8802-22:2015标准规定了在电视频段中操作的认知无线电系统的策略和程序。该标准包括MCA和PHY两个部分。MCA部分规定了认知无线电系统的介质访问控制策略和程序，包括信道选择、信道访问、信道管理和信道维护等方面。PHY部分规定了认知无线电系统的物理层规范，包括调制方式、编码方式、信道带宽、功率控制、频率选择和频谱感知等方面。
ISO/IEC/IEEE 8802-22:2015标准的主要特点包括以下几个方面：
1. 支持多种调制方式和编码方式，以适应不同的应用场景和传输需求。
2. 支持多种信道带宽和频率选择方式，以适应不同的频谱资源和频谱利用需求。
3. 支持功率控制和频谱感知等技术，以提高频谱利用率和无线电频谱的管理效率。
4. 支持信道选择、信道访问、信道管理和信道维护等功能，以提高认知无线电系统的性能和可靠性。
5. 支持与其他无线电系统的互操作性，以促进认知无线电技术的发展和应用。
总之，ISO/IEC/IEEE 8802-22:2015标准为认知无线电技术的发展和应用提供了重要的规范和指导，有助于提高频谱利用率和无线电频谱的管理效率，促进无线通信技术的发展和应用。
相关标准
- ISO/IEC/IEEE 8802-11:2016 Information technology -- Telecommunications and information exchange between systems -- Local and metropolitan area networks -- Specific requirements -- Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications
- ISO/IEC/IEEE 8802-15:2020 Information technology -- Telecommunications and information exchange between systems -- Local and metropolitan area networks -- Specific requirements -- Part 15: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Wireless Personal Area Networks (WPANs)
- ISO/IEC/IEEE 802.22.1-2015 Information technology -- Telecommunications and information exchange between systems -- Local and metropolitan area networks -- Specific requirements -- Part 22.1: Cognitive Wireless RAN Medium Access Control (MCA) and Physical Layer (PHY) Specifications: Policies and Procedures for Operation in the TV Bands -- Amment 1: Enhancements to the Cognitive Wireless RAN Medium Access Control (MCA) and Physical Layer (PHY) Specifications for Operation in the TV Bands
- ISO/IEC/IEEE 802.22.2-2015 Information technology -- Telecommunications and information exchange between systems -- Local and metropolitan area networks -- Specific requirements -- Part 22.2: Cognitive Wireless RAN Medium Access Control (MCA) and Physical Layer (PHY) Specifications: Policies and Procedures for Operation in the TV Bands -- Amment 2: Enhancements to the Cognitive Wireless RAN Medium Access Control (MCA) and Physical Layer (PHY) Specifications for Operation in the TV Bands
- ISO/IEC/IEEE 802.22.3-2015 Information technology -- Telecommunications and information exchange between systems -- Local and metropolitan area networks -- Specific requirements -- Part 22.3: Cognitive Wireless RAN Medium Access Control (MCA) and Physical Layer (PHY) Specifications: Policies and Procedures for Operation in the TV Bands -- Amment 3: Enhancements to the Cognitive Wireless RAN Medium Access Control (MCA) and Physical Layer (PHY) Specifications for Operation in the TV Bands