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  ______   _    _     ______   __   __   ______   
 /_____// | || | ||  /_____//  \ \\/ // |      \\ 
 `____ `  | || | ||  `____ `    \ ` //  |  --  // 
 /___//   | \\_/ ||  /___//      | ||   |  --  \\ 
 `__ `     \____//   `__ `       |_||   |______// 
 /_//       `---`    /_//        `-`'   `------`  
 `-`                 `-`

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發送短信 : UPPGHA : uniform privacy preservation group handover authentication mechanism for mMTC in LTE-A networks