Resource scheduling in a cellular system

H - Electricity – 04 – W

Patent

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Details

H04W 72/12 (2009.01) H04W 88/02 (2009.01) H04W 88/08 (2009.01)

Patent

CA 2632117

The invention relates to a method for scheduling resources for uplink transmissions in a radio access network comprising access points which own pre- assigned resources. The invention also relates to an access point (5-7), a user terminal (1-4) and an access point controller 8. Characteristic features of the invention are that each AP places its resources to the disposition of other APs in the access network, and that an AP (7) transmits a blocking signal (BLOCK R3) if it does not allow a UT (3) , which is served by an AP (5) in another cell, to use its resources (R3). A UT that detects a blocking signal from an AP that owns the resources on which the UT is transmitting immediately stops transmission on said resources. The signal quality of a detected blocking signal may be used for setting the transmission power on the resources the UT has borrowed from the AP which transmits the blocking signal. Based on statistics on the APs which transmit blocking signals long-term pre- allocation of resources among the APs is made.

L'invention concerne un procédé de planification des ressources pour des transmissions en liaison montante dans un réseau d'accès radio comprenant des points d'accès qui possèdent des ressources pré-attribuées. L'invention concerne également un point d'accès (5-7), un terminal utilisateur (1-4) et un contrôleur de point d'accès (8). L'invention est caractérisée en ce que chaque AP met ses ressources à la disposition d'autres AP dans le réseau d'accès, et en ce qu'un AP (7) transmet un signal de blocage (bloc R3) s'il n'autorise pas un UT (3) qui est servi par un AP (5) dans une autre cellule, en vue d'utiliser ses ressources (R3). Un UT qui détecte un signal de blocage d'un AP qui possède les ressources pour lesquelles l'UT est transmis, stoppe immédiatement la transmission sur lesdites ressources. La qualité de signal d'un signal de blocage détecté peut être utilisée pour l'établissement de la puissance de transmission sur les ressources que l'UT a empruntées de l'AP qui transmet le signal de blocage. Une pré-attribution des ressources est faite parmi les AP en se basant sur des statistiques d'AP qui transmettent des signaux de blocage.

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