Apparatus and method for assigning a ranging channel and...

Details Apparatus and method for assigning a ranging channel and... Apparatus and method for assigning a ranging channel and...

H - Electricity

04

W

H04W 72/04 (2009.01) H04W 24/04 (2009.01) H04B 7/208 (2006.01) H04J 11/00 (2006.01)

Patent

CA 2554785

The present invention relates to a mobile communication system utilizing an OFDM scheme. In a broadband wireless access communication system utilizing an OFDM/OFDMA scheme, in which uplink time sync between a BS and a SS and the intensity of a BS reception signal are set, and a ranging signal is transmitted from the SS to the BS in order that the SS gives a bandwidth request to the BS. Described herein are a method for constructing a ranging channel, a method for a BS's operating a ranging channel to be used by a SS, a method for receiving ranging codes transmitted SS by SS from the BS to the SS through the ranging channel.

L'invention concerne un système de télécommunication mobile utilisant une technique de modulation OFDM. Dans un système de télécommunication d'accès sans fil à large bande utilisant une technique de modulation OFDM/OFDMA, la synchronisation temporelle de liaison montante entre une station de base (BS) et un poste d'abonné (SS) ainsi que l'intensité du signal de réception de BS sont fixées, et un signal de mesure de distance est transmis du SS à la BS pour que le SS transmette une demande de bande passante à la BS. L'invention concerne un procédé de formation d'un canal de mesure de distance, un procédé permettant à un SS d'utiliser le canal de mesure de distance employé par la BS, un procédé de réception de codes de mesure de distance transmis SS par SS, de la BS au SS, par l'intermédiaire du canal de mesure de distance.

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