Access method and system based on WIFI-updated (wireless fidelity updated) preferred roaming list, and terminal

• Main Authors: LI LIKA, XU SHENGHONG, CAO LEI, ZHAO YE, WANG QIAN, YANG WEIZHONG, LIU ZHIDE, HE XIAOCHUAN, LI CHENG, MA JINLAN, LI RUIYUN, TAN HAIHUA, ZHANG HUICHANG, MA ZEXIONG, LU LI
• Format: Patent
• Language: Chinese; English
• Published: 31.12.2014
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

The invention discloses an access method and system based on a WIFI-updated (wireless fidelity updated) preferred roaming list, and a terminal. The method includes the steps: the terminal recognizes whether or not a current mobile network which the terminal locates in is accessible; in response to the fact that the current mobile network which the terminal locates in in inaccessible, the terminal establishes a WIFI network connection with a locale PRL (preferred roaming list) server of the terminal; through WIFI network connection, the terminal downloads a latest PRL message about users owned by the locale PRL server, from the locale PRL server; the terminal updates PRL information of the users stored in UIM (user identity module) cards through the latest PRL message; in response to the fact that the UIM cards finish updating, the terminal gains access to the current mobile network according to the latest PRL message. The access method and system and the terminal according to the technical scheme have the adv