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3GPP organizational structure

each Technical Body ( TSG: Technical Specification Group, and  WG: Working Group)
has a link to dedicated page showing the Specifications and Reports produced by this TB

TSG SA (Service and System Aspects)
Chairman: GUTTMAN, Erik  Samsung R&D Institute UK (ETSI)
ViceChairman: SCHUMACHER, Greg  Sprint Corporation (ATIS)
ViceChairman: KIM, Laeyoung  LG Electronics Inc. (TTA)
ViceChairman: NAKANO, Yusuke  KDDI Corporation (ARIB)
WG SA1 (Services)
Chairman: NORP, Toon  TNO (ETSI)
ViceChairman: SCHUMACHER, Greg  SPRINT Corporation (ATIS)
ViceChairman: LEE, Ki-Dong  LG Electronics Inc. (TTA)
WG SA2 (Architecture)
Chairman: MADEMANN, Frank  HuaWei Technologies Co., Ltd (CCSA)
ViceChairman: JAIN, Puneet  Intel (ATIS)
ViceChairman: KISS, Krisztian  Apple (UK) Limited (ETSI)
WG SA3 (Security)
Chairman: PRASAD, Anand  NEC Corporation (TTC)
ViceChairman: ZUGENMAIER, Alf  NTT DOCOMO INC. (ARIB)
ViceChairman: ESCOTT, Adrian  Qualcomm Incorporated (ATIS)
WG SA4 (Codec)
Chairman: GABIN, Frederic  Ericsson LM (ETSI)
ViceChairman: LEUNG, Nikolai  Qualcomm Incorporated (ATIS)
ViceChairman: TENIOU, Gilles  Orange (ETSI)
WG SA5 (Telecom Management)
Chairman: TOVINGER, Thomas  Ericsson LM (ETSI)
ViceChairman: CORNILY, Jean Michel  Orange (ETSI)
ViceChairman: TOCHE, Christian  HuaWei Technologies Co., Ltd (CCSA)
WG SA6 (Mission-Critical Applications)
Chairman: LAIR, Yannick  LG Electronics Inc. (TTA)
ViceChairman: CHITTURI, Suresh  Samsung Electronics Co., Ltd (TTA)
ViceChairman: CHATER-LEA, David  Motorola Solutions UK Ltd. (ETSI)


TSG CT (Core Network and Terminals)
Chairman: MAYER, Georg  HuaWei Technologies Co., Ltd (CCSA)
ViceChairman: MINOKUCHI, Atsushi  NTT DOCOMO INC. (TTC)
ViceChairman: AGHILI, Behrouz  InterDigital Communications (ATIS)
ViceChairman: ACHTER, Johannes  Deutsche Telekom AG (ETSI)
WG CT1 (MM/CC/SM [Iu])
Chairman: MONRAD, Atle  Ericsson LM (ETSI)
ViceChairman: KAURA, Ricky  Samsung R&D Institute UK (ETSI)
ViceChairman: LEIS, Peter  Nokia Germany (ETSI)
WG CT3 (Interworking with external networks)
Chairman: FERNANDEZ, Susana  Ericsson LM (ETSI)
ViceChairman: INOUE, Yoshihiro  NTT (TTC)
ViceChairman: HUANG, Zhenning  China Mobile Com. Corporation (CCSA)
WG CT4 (MAP/CAMEL/GTP/BCH/SS)
Chairman: MORAND, Lionel  Orange (ETSI)
ViceChairman: KOZA, Yvette  Deutsche Telekom AG (ETSI)
ViceChairman: SCHMITT, Peter  HuaWei Technologies Co., Ltd (CCSA)
WG CT6 (Smart Card Application Access)
Chairman: KRUSE, Heiko  IDEMIA (ETSI)
ViceChairman: PHAN, Ly Thanh  Gemalto N.V. (ETSI)


TSG RAN (Radio Access Network)
Chairman: BERTENYI, Balazs  Nokia Corporation (ETSI)
ViceChairman: XU, Xiaodong  China Mobile Com. Corporation (CCSA)
ViceChairman: NAGATA, Satoshi  NTT DOCOMO INC. (ARIB)
ViceChairman: SPATAFORA, Vince  AT&T (ATIS)
WG RAN1 (Radio layer 1)
Chairman: CHEN, Wanshi  Qualcomm Incorporated (ATIS)
ViceChairman: KIM, Younsun  Samsung Electronics Co., Ltd (TTA)
ViceChairman: KOORAPATY, Havish  Ericsson LM (ETSI)
WG RAN2 (Radio layer 2 and Radio layer 3 RR)
Chairman: BURBIDGE, Richard  Intel (ATIS)
ViceChairman: HU, Nan  China Mobile Com. Corporation (CCSA)
ViceChairman: JOHANSSON, Johan  MediaTek Beijing Inc. (CCSA)
WG RAN3 (Iu, Iub, Iur, S1, X2 and UTRAN/E-UTRAN)
Chairman: MASINI, Gino  Ericsson LM (ETSI)
ViceChairman: GAO, Yin  ZTE Corporation (CCSA)
ViceChairman: SIROTKIN, Sasha  Intel (ATIS)
WG RAN4 (Radio performance and protocol aspects)
Chairman: ZHOU, Xutao  Samsung Electronics Co., Ltd (TTA)
ViceChairman: UMEDA, Hiromasa  NTT DOCOMO INC. (ARIB)
ViceChairman: XIZENG, Dai  HuaWei Technologies Co., Ltd (CCSA)
WG RAN5 (Mobile terminal conformance testing)
Chairman: JOHN, Jacob  Motorola Mobility España SA (ETSI)
ViceChairman: GOWDA, Pradeep  Qualcomm Incorporated (ATIS)
ViceChairman: CHEN, Xiaozhong  CATT (CCSA)
WG RAN6 (Legacy RAN radio and protocol)
Chairman: HOFMANN, Juergen  Nokia Networks (ETSI)