Method and apparatus for a target-initiated handoff from a...

Details Method and apparatus for a target-initiated handoff from a... Method and apparatus for a target-initiated handoff from a...

H - Electricity

04

W

H04W 36/14 (2009.01) H04W 84/12 (2009.01) H04W 88/16 (2009.01) H04W 92/02 (2009.01)

Patent

CA 2512897

To address the need for an apparatus and method for handoff from a cellular wireless network to a non-cellular wireless network (WLAN, e.g.), the present application describes an access gateway (214) and a dual mode mobile station (201) that enable such handoffs. The MS provides information to the access gateway so that it can initiate a handoff with the serving cellular MSC (251). By triggering handoffs in this manner, cellular networks need not have special information about non-cellular networks to support handoffs. Instead, dual mode MSs can determine when a handoff to a non-cellular network is preferred and request a handin (302) from the non-cellular network.

Afin de répondre aux besoins d'un appareil et d'un procédé permettant d'effectuer un transfert d'un réseau cellulaire sans fil à un réseau sans fil non cellulaire (par exemple WLAN), l'invention concerne une passerelle d'accès (214) et une station mobile (201) bimode qui permet lesdits transferts. La station mobile fournit des informations à la passerelle d'accès, de sorte qu'un transfert peut être initié au moyen du centre de commutation (251) cellulaire. Lors du déclenchement des transferts de cette manière, les réseaux cellulaires n'ont pas besoin d'informations spéciales concernant des réseaux non cellulaires pour supporter des transferts. Les stations mobiles bimode peuvent déterminer si un transfert vers un réseau non cellulaire est préféré et elles peuvent demander une transmission (302) à partir du réseau non cellulaire.

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