SERVER FOR CONTROL PLANE AT MOBILE COMMUNICATION NETWORK AND METHOD FOR CONTROLLING SIPTO BASED SESSION
First Claim
1. A method of controlling a session in a mobile communication network, the method performed by serving server that takes charge of a control plane and comprising:
- receiving a tracking area update (TAU) request message of a terminal via a target base station;
obtaining subscription information indicating that the session for the terminal is to be passed through a path over nodes within a fixed network different from the mobile communication network;
determining whether gateway relocation is necessary;
releasing a previously established session for the terminal;
transmitting an accept message to the terminal via the target base station, the accept message comprising information for a processing result; and
establishing a session that passes through the path over the nodes within the fixed network based on the subscription information,wherein the subscription information includes a parameter that is related to Selected Internet Protocol Traffic Offload (SIPTO) and indicates whether the session is allowed for SIPTO,wherein the subscription information is either set together with an access point name (APN) or set in a unit of bearer, andwherein releasing the previously established session comprises releasing at least one session associated with the APN among sessions in which the terminal is performing if the subscription information is set together with the APN.
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Accused Products
Abstract
Disclosed is a method of controlling a session in a serving server taking charge of the control plane within a mobile communication network. The control method may include receiving, by the serving server, a tracking area update (TAU) request message of a terminal from a target base station; retrieving, by the serving server, a previous server that has taken charge of the control plane for the terminal; receiving, by the serving server and from the retrieved previous server, a context response message comprising information indicating that a session for the terminal had been established to be passed through a path over the nodes within a fixed network different from a mobile communication network; deciding, by the serving server, whether gateway relocation is needed; releasing, by the serving server, the established session; transmitting, by the serving server, an accept message comprising information for the processing result to the terminal through the target base station; and establishing, by the serving server a session passing through a path over the nodes within a fixed network different from a mobile communication network based on the information.
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Citations
1 Claim
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1. A method of controlling a session in a mobile communication network, the method performed by serving server that takes charge of a control plane and comprising:
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receiving a tracking area update (TAU) request message of a terminal via a target base station; obtaining subscription information indicating that the session for the terminal is to be passed through a path over nodes within a fixed network different from the mobile communication network; determining whether gateway relocation is necessary; releasing a previously established session for the terminal; transmitting an accept message to the terminal via the target base station, the accept message comprising information for a processing result; and establishing a session that passes through the path over the nodes within the fixed network based on the subscription information, wherein the subscription information includes a parameter that is related to Selected Internet Protocol Traffic Offload (SIPTO) and indicates whether the session is allowed for SIPTO, wherein the subscription information is either set together with an access point name (APN) or set in a unit of bearer, and wherein releasing the previously established session comprises releasing at least one session associated with the APN among sessions in which the terminal is performing if the subscription information is set together with the APN.
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Specification