3GPP Specification Release version matrixNote：这里只列出21-35系列1This table shows the versions which exist in each Release of the 3GPP specifications. 2Versions in bold green are current and under active maintenance. 3Versions in italic red are withdrawn. 4Where no version is shown for a given Release, there is no valid spec for that Release. Spec no.TitleR99Rel-4Rel-5Rel-621.01URequirements for the UMTS Terrestrial Radio Access (UTRA) system21.02UHigh l
