| 摘要 |
In an encryption control method of a wireless communication system in which, at the time of wireless communication, encryption parameters are used to encrypt data, and the encryption parameters are used for decryption, a judgment is made as to whether an originating mobile terminal 11 and a terminating mobile terminal 21 exist in the same network, and if the terminals exist in the same network, data is passed through by network-side devices (RNCs 31, 32 ) without performing encryption/decryption processing, and emcryption/decryption processing is performed only by the originating mobile terminal and by the terminating mobile terminal.
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