Method and apparatus for power saving in a mobile terminal...

H - Electricity – 04 – W

Patent

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Details

H04W 52/02 (2009.01) H04W 84/12 (2009.01)

Patent

CA 2339969

Power consumption of a mobile terminal is reduced by providing a system wherein a base station specifies a time period, at the end of which a mobile terminal that is hibernating in a power-saving mode will listen for paging messages from the base station. If no paging messages are present, then the mobile terminal continues hibernating, thus conserving battery power by not communicating with the base station. Either the base station or the mobile terminal can initiate a process to transfer the mobile terminal from an awake mode to a hibernating mode. In accordance with another embodiment of the invention for use in systems that require frequent connectivity testing, an agent can be provided within the base station to answer connectivity test inquiries on behalf of the mobile terminal. The mobile terminal can communicate periodically with the base station to update information that the agent uses to respond to the test inquiries.

Selon cette invention, on réduit la consommation d'énergie d'un terminal mobile au moyen d'un système dans lequel une station de base indique une période à la fin de laquelle un terminal mobile qui "hiberne" en mode d'économie d'énergie doit se mettre à l'écoute des messages diffusés par la station de base. Si aucun message ne lui parvient, le terminal mobile continue à hiberner et économise la batterie en ne communiquant pas avec la station de base. La station de base tout comme le terminal mobile peuvent lancer une procédure pour faire passer le terminal mobile du mode "éveillé" au mode d'hibernation. Dans un autre mode de réalisation de cette invention, utilisé avec les systèmes qui nécessitent des tests fréquents de connectivité, un agent à l'intérieur de la station de base répond à la place du terminal mobile aux interrogations relatives aux tests de connectivité. Le terminal mobile peut communiquer périodiquement avec la station de base pour mettre à jour les informations utilisées par l'agent afin de répondre aux interrogations relatives aux tests de connectivité.

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