Estimation of interference variation caused by the addition...

Details Estimation of interference variation caused by the addition... Estimation of interference variation caused by the addition...

H - Electricity

04

Q

H04Q 7/00 (2006.01)

Patent

CA 2518251

A method for determining whether a connection event between a base station and a wireless transmit/receive unit (WTRU) should be accepted or rejected (151), comprises measuring the interference level Io in a candidate timeslot; measuring the path loss L between the base station and the WTRU; measuring the total transmit power P0 of the base station; determining a thermal noise level .theta.; determining a fading average signal-to-interference ratio (SIR); and calculating a ratio R (141), wherein if the ratio R (152 or 157) is above a certain threshold the connection event will be accepted and if the call is below the threshold it will be rejected.

L'invention concerne un procédé destiné à déterminer si un événement de connexion entre une station de base et une unité d'émission/réception sans fil (WTRU) doit être accepté ou rejeté. Ce procédé consiste à mesurer le niveau d'interférence <I>I</I>¿0? dans un intervalle de temps candidat, à mesurer la perte de chemin L entre la station de base et l'unité WTRU, à mesurer la puissance d'émission totale <I>P</I>¿0? de la station de base, à déterminer un niveau de bruit thermique .theta., à déterminer un rapport signal/interférence (SIR) moyen d'évanouissement, puis à calculer un rapport R. Si le rapport R est supérieur à un seuil donné, l'événement de connexion est accepté, et si l'appel est inférieur à ce seuil, il est rejeté.

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