This is a standard for regional wireless networks called wireless regional area network (WRAN), which occupy vacant space in the television spectrum. During the development of the IEEE 202.22 standard for WRAN, the cognitive radio (CR) techniques are used to enable sharing of the geographically unused spectrum and the spectrum previously allocated to television broadcast services, while avoiding the interference phenomena. The objective is to provide broadband access in hard-to-reach areas and the regions with low population density (typically rural), which will enable WRAN to be used at large scale around the world. The IEEE 802.22 WRAN networks are designed to operate in TV broadcast bands as they do not cause harmful interference to already operational systems (especially digital TV and analog TV) and low-power licensed radio devices, wireless microphones.
It is the former committee of the IEEE 1900 standards. The SCC41 committee will develop the standards for dynamic spectrum access networks, to make better use of the spectrum. The innovative techniques and access methods in such networks require interference control, wireless technology coordination, network management, and information sharing.