Mobile communications system and method for providing mobile...

H - Electricity – 04 – W

Patent

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Details

H04W 36/08 (2009.01) H04W 36/32 (2009.01)

Patent

CA 2500349

A method for handover a mobile unit (UE) from a first base station (BS1) to a second base station (BS2) in a wireless communication systems employing smart antenna technology. Following trigger events of a handover, the mobile station generates a physical signal sounding pulse transmitted by an isotropic antenna. The sounding pulse may consist of a common sequence of symbols or a specific sequence of symbols that uniquely identifies the mobile station. A series of sounding pulses can be sent according to a power ramping procedure until a base station has focused a communications beam toward the mobile. Receiving base stations provide feedback information upon detection of the sounding pulse allowing the mobile unit (UE) and/or base station (BS1-BS4) to form communication beams toward each other. A mapping protocol may also be utilized by the communication system.

L'invention concerne un procédé de transfert d'une unité mobile d'une première vers une seconde stations de base dans un système de communication sans fil faisant appel à une technologie de l'antenne intelligente. Faisant suite à des événements de déclenchement d'un transfert, la station mobile produit une impulsion sonore d'un signal physique émise par une antenne isotrope. Ladite impulsion peut consister en une séquence commune de symboles d'une séquence spécifique de symboles qui identifie de façon unique la station mobile. Une série d'impulsions sonores peut être envoyée en fonction d'une procédure de montée en puissance jusqu'à ce qu'une station de base ait focalisé un faisceau de communication en direction du mobile. Les stations de base réceptrices fournissent des informations en retour une fois l'impulsion sonore détectée, ce qui permet à l'unité mobile et/la station de base de former des faisceaux de communication l'une en direction de l'autre. Le système de communication peut également utiliser un protocole de mappage.

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