China is most likely to issue 3G mobile telecommunication licenses in the second half of this year and China's 3G subscriber base will reach 270 million by 2011, said Analysys International in a statement.   According to the company, when China's 3G market initiates, China Telecom and China Netcom will adopt preferential policies including low-end terminals and low fees to attract users. Therefore, they will focus on low-end and mid-range users. While China Mobile and China Unicom will develop 3G subscribers on the 2G platforms, mid- and high-end users who have strong data service demand will be the focus targets.   Analysys International is a leading Internet based provider of business information about technology, media and telecom industries in China.