| 摘要 |
<p>The mobile telephony operator random selection device and procedure for cellular phones prove useful when the user is abroad in an international roaming context. They give cellular phone manufacturers the possibility to equip the telephone with the means to select the network without giving preference to any of the operators present in the territory visited by the user, due to the fact that they are not conditioned by the level of the signals received. The number relating to the network to be selected is obtained by subjecting the signals containing the synchronisation information, transmitted on a specific channel by the cells of different operators, and are not temporally correlated and random, to a series of operations. <IMAGE></p> |
