Adjustment of target signal-to-interference in outer loop...

H - Electricity – 04 – W

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H04W 52/20 (2009.01) H04W 52/08 (2009.01) H04W 52/10 (2009.01)

Patent

CA 2559044

A method system and components for outer loop power control which compensates for changing channel conditions. A target metric, preferably target signal-to- interference ratio (SIR), is adjusted with differing step up and step down levels to converge on a relatively low steady state level of step up and step down target metric adjustments. The initial target SIR remains fixed during an inner loop settling state, followed by incremental target SIR adjustments during a transient state, and smaller incremental target SIR adjustments in a steady state. Step sizes of the adjustments are preferably based on the target block error rate (BLER) and the number of errors detected within predetermined time intervals.

L'invention a trait à un procédé, à un système et à des composantes permettant une commande de puissance en boucle externe qui compense les conditions de voies changeantes. Une métrique cible, de préférence un rapport signal/brouillage (SIR) cible, est réglée à l'aide de divers niveaux d'élévation et d'abaissement qui convergent sur un niveau d'état stationnaire relativement bas de réglages de métrique cible à élévation et abaissement. Le SIR cible initial reste fixe pendant un état d'établissement de boucle interne, puis fait l'objet d'ajustements incrémentiels pendant un état transitoire, et d'ajustements incrémentiels plus petits à l'état stationnaire. La taille des ajustements est de préférence basée sur le taux d'erreur de bloc cible (BLER) et sur le nombre d'erreurs détectées durant des intervalles de temps prédéterminés.

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