Method and system for mobile communications

• Main Authors: YUNOKI KAZUFUMI, YAMAGATA KATSUHIKO, HAMAJIMA TAKUYA, UCHIYAMA NOBUHIDE, IGARASHI DAISUKE, SATO TAKAAKI, HATA MASAFUMI, WATANABE YASUYUKI, TAMURA MOTOSHI, ISHIKAWA NOBUTAKA, HAGIWARA JUNICHIRO, MIKI MUTSUMARU, OKAMOTO AKIKO, YASUDA YOSHIYUKI, KUSUNOSE KENYA, UCHIKOSHI AKIHIRO
• Format: Patent
• Language: Chinese; English
• Published: 13.04.2011
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION; WIRELESS COMMUNICATIONS NETWORKS

The invention discloses a method and a system for mobile communications. When a network uses the temporary user mobile identifier to call, a corresponding mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. When a user is proved to be legal by checking the authenticity, the network sends a request and the user should send an independent user mobile identifier. When the user is proved to be illegal by checking the authenticity, the user mobile identifier is assigned again. When a call occurs, switch is carried out in blocks and zones. When a branch exchange is in need, it is switched to the branch of which switch is likely to be carried out in blocks and zones. When another call occurs, branch configurations and communication frequency bands of all calls are the same. When another call occurs at an MS capable of simultaneously processing a plurality of calls, the b