5G Valley Open Test Site is an R&D and product development test site which is formed by Information Technology and Communication Authority, Middle East Technical University, Bilkent University, Hacettepe University and electronical communication companies Türk Telekominikasyon A.Ş., Turkcell İletişim Hizmetleri A.Ş., and Vodafone Telekominikasyon A.Ş.