3GPP TR 01.01U – Universal Mobile Telecommunications System (UMTS); Objectives and overview 3GPPTR01_series01.01U SPECIFICATION WITHDRAWN Related SpecTS 01.01 Technical Specifications and Technical Reports for a GERAN-based 3GPP systemTS 01.02 General Description of a GSM Public Land Mobile Network (PLMN)TR 01.04 Abbreviations and acronyms