H - Electricity – 04 – W
Patent
H - Electricity
04
W
H04W 36/08 (2009.01) H04W 88/02 (2009.01) H04W 88/08 (2009.01)
Patent
CA 2614287
The invention provides a method for assisting handover of a communication session associated with a UT (240) from a first radio access point, AP1, (210) to a second radio access point, AP2, (220) in a radio access network, said method to be carried out by said AP1 (210) and comprising the steps of: - receiving a handover intention notify message comprising a session identifier identifying said session and indicating that said UT (240) intends to perform a session handover, - assigning said session a buffer memory space (213) in a memory (211) of said AP1 (210), - buffering downlink data packets addressed to said UT (240) in said buffer memory (213) as a response on receiving said handover intention notify message. The invention further provides a UT (240), an AP1, (210), AP2, (220), an AR, (250) and software program/s co- operating and/or realising the method according to the invention. The invention provides a smoother handover.
L'invention concerne un procédé qui permet de faciliter le transfert d'une session de communication associée à un terminal d'utilisateur (UT) (240) depuis un premier point d'accès sans fil, AP1, (210) à un second point d'accès sans fil, AP2, (220) dans un réseau d'accès sans fil. Ce procédé peut être appliqué par AP1 (210) et consiste à: - recevoir un message de notification d'intention de transfert contenant un identificateur de session identifiant la session et indiquant que l'UT (240) à l'intention d'appliquer un transfert de session;- attribuer à la session un espace de mémoire tampon (213) dans une mémoire (211) de l'AP1 (210); et enfin, - mettre en mémoire les paquets de données en liaison descendante adressés à l'UT (240) dans la mémoire tampon (213) en réponse à la réception du message de notification d'intention de transfert. Par ailleurs, l'invention concerne un UT (240), un AP1, (210), AP2, (220), un AR, (250) et au moins un programme logiciel coopérant et/ou appliquant le procédé de l'invention. L'invention offre en outre un procédé de transfert plus lisse.
Herwono Ian
Sachs Joachim
Ericsson Canada Patent Group
Telefonaktiebolaget Lm Ericsson (publ)
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