| 摘要 |
The invention relates to a method for the controlling of Repeated SACCH operation in GSM/GERAN communication systems. A mobile station, supporting Repeated SACCH operation, sends a SACCH Repetition Request in uplink direction to a network, to inform the network about support of Repeated SACCH by the mobile. The Repetition request in uplink direction is sent in case that the mobile station switches from a given AMR mode to a lower AMR mode, for which repeated SACCH operation is applicable. The network sends in downlink direction a SACCH repetition order in response, to inform the mobile station, that the network supports Repeated SACCH too. The Repeated SACCH mode will be activated at the mobile station and at the base station.
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