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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