SYSTEM AND METHOD FOR REASSIGNING AN UPLINK TIME SLOT FROM A CIRCUIT-SWITCHED GPRS MOBILE DEVICE TO A DIFFERENT PACKET-SWITCHED GPRS MOBILE DEVICE
First Claim
1. A wireless communication system comprising:
- a first mobile device with a circuit-switched connection using adaptive multi-rate (AMR) speech coding and assigned to a first time slot;
a second mobile device with a packet-switched connection and assigned to a second time slot; and
a General Packet Radio Service (GPRS) base station for instructing the second mobile device to transmit data on the first time slot during a no-speech-data AMR frame of the first mobile device.
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Accused Products
Abstract
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.
19 Citations
20 Claims
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1. A wireless communication system comprising:
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a first mobile device with a circuit-switched connection using adaptive multi-rate (AMR) speech coding and assigned to a first time slot; a second mobile device with a packet-switched connection and assigned to a second time slot; and a General Packet Radio Service (GPRS) base station for instructing the second mobile device to transmit data on the first time slot during a no-speech-data AMR frame of the first mobile device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for a GPRS base station comprising:
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receiving an AMR speech burst from a first mobile device on a first time slot; receiving a silence descriptor first (F) AMR frame from the first mobile device on the first time slot; and assigning the first time slot to a second mobile device, served by the GPRS base station and having a packet-switched connection, during no-speech-data (N) AMR frames of the first mobile device. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for a circuit-switched mobile device comprising:
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transmitting a speech (S) adaptive multi-rate (AMR) frame; transmitting a silence descriptor (SID) First (F) AMR frame; and transmitting an AMR Access Burst (AAB) during an A-idle frame of a 52-multiframe structure. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification