Cluster-specific reference signals for communication systems with multiple transmission points

Signaux de référence spécifiques de groupe pour systèmes de communication à points d'émission multiples

Abstract

Des aspects de la présente invention portent sur des procédés et des appareils servant à émettre - à partir de toutes les cellules appartenant à un groupe (par exemple, pour un système multipoint coordonné (CoMP) à traitement conjoint/transmission (JP/T), également appelé réseau MIMO (entrée multiple/sortie multiple)) - des signaux de référence (RS) pour un renvoi d'informations d'état de canal (CSI) à un équipement utilisateur (UE ) au niveau des mêmes ressources de temps et de fréquence. De cette manière, des données sont empêchées de perturber le système de renvoi d'informations CSI. En conséquence, il n'est pas nécessaire de déterminer des données pour estimer de façon fiable le ou les canaux.
Aspects of the present disclosure provide methods and apparatuses for transmitting-from all cells belonging to a cluster (e.g., for Joint Processing/Transmission (JP/T) Coordinated Multipoint (CoMP), also referred to as network MIMO (Multiple Input/Multiple Output))-reference signals (RSs) for channel state information (CSI) feedback to user equipment (UE) at the same time and frequency resources. In this manner, data is precluded from interfering with the CSI feedback scheme. Consequently, data need not be determined to reliably estimate the channel(s).

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