Efficient media independent handover protocol operation...

H - Electricity – 04 – W

Patent

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H04W 36/00 (2009.01)

Patent

CA 2654906

The present invention modifies existing media independent handover (MIH) function (MIHF) frame format as defined by the IEEE 802.21 standard. In one embodiment, the variable load of the MIHF frame is modified to eliminate the MIHF variable header by defining the MIHF identification (ID) field and the session ID field as fixed fields in the MIHF fixed header. Thus, the MIHF variable load is only made up of the MIHF payload. In another embodiment, a field such as an information element (IE), a header, or MIH service data such as a command or an event, is represented by a type field, a length field and a value field (TLV). The length of the value field is exactly 128 octets, and the length field only occupies one octet.

La présente invention modifie le format de trame (MIHF) de la fonction existante MIH (transfert intercellulaire indépendant du support) telle que définie par la norme IEEE 802.21. Dans un mode de réalisation, la partie variable de la trame MIHF est modifiée pour éliminer l'en-tête variable MIHF en définissant le champ Identification (ID) MIHF et le champ ID de session comme des champs fixes dans l'en-tête fixe MIHF. Ainsi, la partie variable MIHF est uniquement constituée de la partie MIHF. Dans un autre mode de réalisation, un champ tel qu'un élément d'information (IE), un en-tête ou des données de service MIHF comme une commande ou un événement, est représenté par un champ de type, un champ de longueur et un champ de valeur (TLV). La longueur du champ de valeur est de 128 octets exactement, et le champ de longueur n'occupe qu'un seul octet.

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