Currently in the field of mobile communications, 3GPP is China's standardization organization.

Analysis of the test questions: 3GPP was established in December 1998, and a number of telecommunication standard organization partners jointly signed the "Third Generation Partnership Project Agreement". At present, there are ETSI in Europe, ATIS in the United States, TTC in Japan, ARIB in Japan, TTA in Korea, TSDSI in India and CCSA in my country as 7 OPs of 3GPP.