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US 7,649,837 B1Granted
Control of gateway support node selection
AssigneeNokia Networks Oy
InventorMikko Puuskari
Life of this patent
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Abstract
The invention relates to controlling selection of a gateway support node of a packet-switched network. The invention includes defining at least one condition for the gateway support node. When the condition is fulfilled, another gateway support node is more suitable for transmitting packets. When fulfillment of the condition is detected, a first message indicating the other gateway support node is transmitted to the serving support node.
Claims12
A method, comprising:
- defining at least one condition for a first gateway support node, so that when the condition is fulfilled, a second gateway support node is more suitable for transmitting packets over a connection, the second gateway support node being an alternative to the first gateway support node so that the packets are transmitted from a subscriber either via the first gateway support node or via the second gateway support node, the condition not relating to a receiver of a packet;
- detecting, by the first gateway node that the condition is fulfilled;
- instructing, by the first gateway node, to select the second gateway support node by sending a first message indicating the second gateway support node;
- receiving in the first gateway support node a second message which indicates that a tunnel for transmitting packets between a subscriber and an external data network is to be established between a serving support node and the first gateway support node,
- checking said condition, and
- transmitting the first message to the serving support node if said condition is fulfilled, or
- establishing a tunnel if said condition is not fulfilled.
4 more elements
A method, comprising:
- defining at least one condition for a first gateway support node, so that when the condition is fulfilled, a second gateway support node is more suitable for transmitting packets over a connection, the second gateway support node being an alternative to the first gateway support node so that the packets are transmitted from a subscriber either via the first gateway support node or via the second gateway support node, the condition not relating to a receiver of a packet;
- detecting, by the first gateway node that the condition is fulfilled;
- instructing, by the first gateway node, to select the second gateway support node by sending a first message indicating the second gateway support node;
- establishing a tunnel between a serving support node and the first gateway support node;
- detecting a change in operating conditions in the first gateway support node;
- checking said at least one condition for the first gateway support node;
- and
- transmitting a first message to the serving support node if said condition is fulfilled, said first message indicating that the tunnel should be removed to said second gateway support node.
5 more elements
A packet-switched telecommunications system, comprising
- a support node serving a subscriber of the telecommunications system,
- a first and a second gateway support node, wherein
- the support node is arranged to activate establishment of a tunnel, to be used for transmission of packets, originating from the subscriber, between the support node and the first gateway support node,
- in response to fulfillment of a predefined condition, the predefined condition not relating to a receiver of a packet, the first gateway support node is arranged to send to the serving support node a first message indicating the second gateway support node which is more suitable for transmitting packets,
- in response to receiving the first message, the serving support node is arranged to activate establishment of a tunnel to be used in transmission of packets with the second gateway support node indicated, and
- packets transmitted using the tunnel between the support node and the first gateway support node are not sent from the first gateway support node to the second gateway support node.
3 more elements
Dependencies are inferred from the claim text.