TD-LTE is accelerating towards the global 4G standard. Reporters learned not long ago that, the main standards of TD-SCDMA in the aspect of LTE (the upgraded version of domestic TD network) radio access network are almost completed, and TD manufacturers will launch test pilot machines of TD in the LTE aspect at the end of this year. Vice President of Datang Mobile Yang Jiajun revealed that, the evolution route of TD-SCDMA can be summarized as: the basic version of TD, enhanced version of TD, long term evolution version of TD (TD-LTE), and the 4G version of TD. "LTE not only makes up for the deficiencies of 3G HSPA in capacity, delay, etc., but also ensures that it will be able to increase capacity smoothly in the future and has good compatibility with future 4G." Said Yang Xiaojun, Technical Director of the 3G Product Department of China Potevio.