Method and apparatus for mitigating interference in a...

H - Electricity – 04 – B

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H04B 15/00 (2006.01) H04Q 7/22 (2006.01) H04Q 7/30 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2182879

A communication system (100) that includes a base unit (101) and a subscriber unit (e.g., 103) employs a method (400) and apparatus (101) for mitigating interference (135) therein. The base unit (101) receives an uplink communication signal from the subscriber unit (103) at an uplink frequency and conveys a downlink communication signal to the subscriber unit (103) at a downlink frequency. Upon receiving (403) an uplink communication signal from the subscriber unit (103), the base unit (101) determines (405) a quality metric for the uplink frequency. When the quality metric is below a quality threshold (407), the base unit (101) and the subscriber unit (103) transfer (415) the communication signal to an alternate uplink frequency, while the downlink frequency remains unchanged.

Cette invention concerne un système de communication (100) comprenant un bloc de base (101) et un bloc d'abonné (103, par exemple), faisant appel à un procédé (400) ainsi qu'à un appareil (101) pour pallier les interférences (135) dans ledit système. Le bloc de base (101) reçoit du bloc d'abonné (103) un signal de communication émis dans le sens terre-satellite et sur une fréquence terre-satellite, et envoie un signal de communication dans le sens satellite-terre au bloc d'abonné (103) sur une fréquence satellite-terre. Lorsqu'il reçoit (403) un signal de communication émis par le bloc d'abonné (103) dans le sens terre-satellite, le bloc de base (101) détermine (405) une mesure de qualité de la fréquence terre-satellite. Si la mesure de qualité se trouve en-dessous d'un seuil de qualité (407), le bloc de base (101) et le bloc d'abonné (103) transfèrent (415) le signal de communication sur une autre fréquence terre-satellite, la fréquence satellite-terre restant inchangée.

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