H - Electricity – 04 – W
Patent
H - Electricity
04
W
H04W 36/02 (2009.01) H04W 36/18 (2009.01)
Patent
CA 2649524
The present invention relates to the handing off without packet loss, from a mobile device traveling from a current point of attachment to a new point of attachment, by providing a copy and forward module in association with the current point of attachment. The copy and forward module copies and stores packets that are being transmitted to a mobile node while the mobile node is in transition from the current point of attachment to the new point of attachment. The copy and forward module maintains a list of addresses as the last known contact addresses of the mobile node, and the mobile node's initial copy request contains an initial contact address of the mobile node. Subsequent copy requests are used to add or delete addresses to the list, and carry a per-address flag to indicate whether the address is to be added or deleted from the list.
La présente invention concerne le transfert, sans perte de paquets, d'un dispositif mobile passant d'un point de rattachement actuel à un nouveau point de rattachement, au moyen d'un module de copie-transmission associé au point actuel de rattachement. Le module de copie-transmission copie et stocke des paquets en cours de transmission vers un noeud mobile pendant que ce noeud mobile transite du point de rattachement actuel au nouveau point de rattachement. Le module de copie-transmission maintient une liste d'adresses en tant que dernières adresses de contact connues du noeud mobile. Des demandes ultérieures de copie sont utilisées pour l'ajout ou la suppression d'adresses dans la liste et un drapeau correspondant indique si une adresse doit être ajoutée ou supprimée de la liste.
Dutta Ashutosh
Fajardo Victor
Oba Yoshihiro
Taniuchi Kenichi
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Kabushiki Kaisha Toshiba
Telcordia Technologies Inc.
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