System and method for reassigning an uplink time slot from a...

Details System and method for reassigning an uplink time slot from a... System and method for reassigning an uplink time slot from a...

H - Electricity

04

W

H04W 72/12 (2009.01)

Patent

CA 2693484

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.

L'invention concerne un système de communication sans fil (100) comprenant un premier dispositif mobile (110) avec une connexion par commutation de circuits utilisant un codage de la parole multidébit adaptatif (AMR). Ce premier dispositif mobile (110) est attribué à une première tranche de temps par une station de base (130). La station de base (130) sert également au moins un second dispositif mobile (120) avec une connexion par commutation de paquets et attribué à une seconde tranche de temps. La station de base (130) donne comme instruction au second dispositif mobile (120) de transmettre des données sur la première tranche de temps, ainsi que sur sa seconde tranche de temps attribuée à l'origine, pendant une trame AMR de données sans parole du premier dispositif mobile (110). La station de base cesse de donner comme instruction au second dispositif mobile (120) de transmettre les données sur la première tranche de temps lorsqu'elle reçoit une rafale d'accès AMR (AAB) du premier dispositif mobile (110). Une structure multitrame (52), utilisée par le second dispositif mobile (120) lorsqu'il transmet sur la première tranche de temps, comprend au moins une trame de repos A lorsque le premier dispositif mobile (110) peut transmettre sa AAB.

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