The Dynamic Spectrum Alliance, an international organization focused on “advocating more efficient and effective spectrum management,” launched Monday. Its membership is comprised of 23 companies and organizations, including Microsoft Corp. and Canadian startup 6Harmonics. It promotes dynamic spectrum access technologies, which “can opportunistically exploit otherwise unused and inefficiently used radio frequencies ('white spaces' spectrum) to create various forms of wireless connectivity,” the organization said in a release. White space frequencies are the unused TV band frequencies between over-the-air television channels. The group will also focus on ensuring technology can be used to extend rural broadband and develop “smart cities.” The release said trials and pilots around the world demonstrate that spectrum sharing technology is starting to be commercialized. “We look forward to partnering with regulators around the world in developing effective legal frameworks for spectrum sharing,” James Collier, co-founder of Neul, one of the member companies, said in the release. The alliance will be “technology neutral and support a variety of standards-based and proprietary technologies that will lower barriers to entry and increase technical and business model innovation that can result from dynamic access to unused spectrum,” the release said.