Method and apparatus for determining pt server having...

H - Electricity – 04 – W

Patent

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H04W 4/08 (2009.01) H04W 4/10 (2009.01)

Patent

CA 2628052

Disclosed is a method and apparatus for determining a controlling PT server. A mobile communication terminal transmits a group generation request message to a PT XDMS, and the PT XDMS determines a specific PT server having the largest number of members as a controlling PT server. The PT XDMS generates group identity information by using an address of the specific PT server, and transmits a group generation response message including the group identity information to the mobile communication terminal. Then, the mobile communication terminal transmits the group identity information of the group generation response message to a PT server with being included in an INVITE message. The PT server certifies the group identity information included in the INVITE message, and determines whether or not itself is to be operated as a controlling PT server.

Cette invention concerne un procédé et un dispositif permettant de définir un serveur doté d'une fonction de commande. Un terminal de communication mobile transmet un message de demande de génération groupée à un PT XMDS, lequel PT XMDS définit un serveur PT spécifique ayant le nombre le plus élevé de membres comme serveur PT de commande. Le PT XMDS génère une information d'identité de groupe au moyen d'une adresse du serveur PT spécifique et adresse un message de réponse de génération de groupe, informations d'identité de groupe y compris, au terminal de communication mobile. Le terminal de communication mobile transmet alors l'information d'identité de groupe dudit message de réponse à un serveur PT, avec message d'INVITE inclus. Le serveur PT authentifie l'information d'identité de groupe incluse dans le message INVITE et détermine s'il doit lui-même ou non fonctionner comme serveur PT de commande.

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