Methods for reducing latency of a call set up

H - Electricity – 04 – B

Patent

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Details

H04B 7/26 (2006.01) H04Q 7/28 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2506150

A proactive speculation method decreases the call setup time for private calls (200) and selective dynamic group calls (300). In a push-to-talk dispatch network (40) an originating mobile unit (10) sends a wake-up packet (54, 114) to the dispatch network (40). Prior to initiating the push-to-talk function, the target mobile units (20-30) receive a wake-up packet (68, 146-148) from network (40). Thereby, prior to establishing the push-to-talk function, each of the mobile units in the push-to-talk call have been coupled via RF links. If the originating mobile unit has a current IP address, direct wake-up packets (72) may be sent.

L'invention concerne un procédé de spéculation proactive diminuant la durée d'établissement d'une communication pour des appels privés (200) et des appels de groupe dynamiques sélectifs (300). Dans un réseau d'envoi à poussoir (40), une unité mobile d'origine (10) envoie un paquet de réveil (54, 114) au réseau d'envoi (40). Avant de lancer la fonction main sur bouton, les unités mobiles cibles (20-30) reçoivent un paquet de réveil (68, 146-148) provenant du réseau (40). Par conséquent, avant d'établir la fonction d'émission, chaque unité mobile dans l'appel à bouton poussoir a été couplée via des liaisons RF. Si l'unité mobile d'origine présente une adresse IP courante, des paquets de réveil directs (72) peuvent être envoyés.

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