| 摘要 |
A wireless communication system ( 100 ) includes a first mobile device ( 110 ) with a circuit-switched connection using adaptive multi-rate (AMR) speech coding. This first mobile device ( 110 ) is assigned to a first time slot by a base station ( 130 ). The base station ( 130 ) also serves at least a second mobile device ( 120 ) with a packet-switched connection and assigned to a second time slot. The base station ( 130 ) instructs the second mobile device ( 120 ) to transmit data on the first time slot, as well as its originally-assigned second time slot, during a no-speech-data AMR frame of the first mobile device ( 110 ). The base station ceases to instruct the second mobile device ( 120 ) to transmit data on the first time slot when it receives an AMR Access Burst (AAB) from the first mobile device ( 110 ). A 52-multiframe structure, used by the second mobile device ( 120 ) when it is transmitting on the first time slot, includes at least one A-idle frame when the first mobile device ( 110 ) can transmit its AAB.
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