Mobile ip registration methods in wireless system

Details Mobile ip registration methods in wireless system Mobile ip registration methods in wireless system

H - Electricity

04

W

H04W 60/00 (2009.01) H04W 80/04 (2009.01)

Patent

CA 2474768

A mobile IP registration solution for mobile nodes (108-111) of a wireless communication system (100). A mobile node receives an IP address of a foreign agent from a control message while attempting (304) to acquire a channel. Substantially immediately upon acquiring (306) a channel, the mobile node determines (308) whether to send a proxy MIP advertisement. If not, the mobile node retrieves (310) the foreign agent IP address and forwards (312) it to a processing element. If so, the mobile node retrieves (314) the foreign agent IP address and a static capabilities list associated with the foreign agent, constructs (316) a proxy MIP advertisement and forwards (318) it to a processing element. Upon receiving the foreign agent IP address or proxy MIP advertisement, the processing element constructs (320) a mobile IP registration request using the foreign agent IP address. The registration request is sent (322) to a home agent (130).

L'invention concerne une solution d'inscription d'IP mobile destin~e aux noeuds mobiles (108-111) d'un syst­me de communication sans fil (100). Un noeud mobile re×oit une adresse IP d'agent ~tranger provenant d'un message de commande et tente (304) simultan~ment d'acqu~rir un canal. Sensiblement imm~diatement apr­s l'acquisition (306) d'un canal, le noeud mobile d~termine (308) s'il doit envoyer ou non une annonce MIP mandataire. S'il ne doit pas proc~der ~ l'envoi, le noeud mobile r~cup­re (310) l'adresse IP de l'agent ~tranger et la transmet (312) ~ un ~l~ment de traitement. S'il doit proc~der ~ l'envoi, le noeud mobile r~cup­re (314) l'adresse IP de l'agent ~tranger, ainsi qu'une liste de capacit~s statiques associ~es audit agent ~tranger, puis construit (316) une annonce MIP mandataire et la transmet (318) ~ un ~l~ment de traitement. Lorsqu'il re×oit l'adresse IP d'agent ~tranger ou l'annonce MIP mandataire, ledit ~l~ment de traitement construit (320) une demande d'inscription d'IP mobile au moyen de ladite adresse IP d'agent ~tranger. La demande d'inscription est alors envoy~e (322) ~ un agent de rattachement (130).

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