Systems and methods for transmission of data in a communication system
First Claim
1. A method of transmitting data from a node located in a public network to one of a plurality of devices located in a private network said public network being connected to said private network by a restrictive gateway which allows connections between the public and private networks to be established in only one direction the restrictive gateway preventing communication from being initiated by the node to the one of said plurality of devices such that the node waits until a further device in the private network establishes a communication with the node before the node is able to transmit data to the one of said plurality of devices, said method comprising:
- determining that further device located in the private network has an existing connection with the node via the restrictive gateway comprising;
receiving a first identifier from the one of said plurality of devices, where the first identifier is received from the one of said plurality of devices during a previous connection between the one of said plurality of devices and the node;
receiving a second identifier from the further device;
comparing the first identifier with the second identifier; and
determining that the further device is located in the private network if the first identifier and the second identifier are associated with the same network;
transmitting from the node to the further device located in the private network a message addressed to the one of said plurality of devices via the connection between the node and the further device; and
forwarding the message from the further device to the one of said plurality of devices via a connection established within the private network.
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Accused Products
Abstract
A method of transmitting data from a node, such as a session node including any network node, located in a first network to one of a plurality of devices located in a second network, said method comprising; determining that another device connected to the node is located in the second network; transmitting from the node to the other device located in the second network a message addressed to the one of said plurality of devices via the connection between the node and the other device; and forwarding the message from the other device to the one of said plurality of devices via a connection established within the second network.
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Citations
12 Claims
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1. A method of transmitting data from a node located in a public network to one of a plurality of devices located in a private network said public network being connected to said private network by a restrictive gateway which allows connections between the public and private networks to be established in only one direction the restrictive gateway preventing communication from being initiated by the node to the one of said plurality of devices such that the node waits until a further device in the private network establishes a communication with the node before the node is able to transmit data to the one of said plurality of devices, said method comprising:
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determining that further device located in the private network has an existing connection with the node via the restrictive gateway comprising; receiving a first identifier from the one of said plurality of devices, where the first identifier is received from the one of said plurality of devices during a previous connection between the one of said plurality of devices and the node; receiving a second identifier from the further device; comparing the first identifier with the second identifier; and determining that the further device is located in the private network if the first identifier and the second identifier are associated with the same network; transmitting from the node to the further device located in the private network a message addressed to the one of said plurality of devices via the connection between the node and the further device; and forwarding the message from the further device to the one of said plurality of devices via a connection established within the private network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A node located in a public network arranged to transmit data to one of a plurality of devices located in a private network, said public network being connected to said private network by a restrictive gateway which allows connections between the public and private networks to be established in only one direction, the restrictive gateway preventing communication from being initiated by the node to the one of said plurality of devices such that the node waits until a further device in the private network establishes a communication with the node before the node is able to transmit data to the one of said plurality of devices, said node being configured to:
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determine that a further device located in the private network has an existing connection with the node via the restrictive gateway; receive a first identifier from the one of said plurality of devices, where the first identifier is received from the one of said plurality of devices during a previous connection between the one of said plurality of devices and the node; receive a second identifier from the further device; compare the first identifier with the second identifier; and determine that the further device is located in the private network if the first identifier and the second identifier are associated with the same network; and transmit to the further device located in the private network a message addressed to the one of said plurality of devices via the connection with the further device wherein said message is forwarded from the further device to the one of said plurality of devices via a connection established within the private network.
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12. A communication system comprising a node located in a public network and a plurality of devices located in a private network, said public network being connected to said private network by a restrictive gateway which allows connections between the public and private to be established in only one direction, wherein the node is arranged to transmit data to one of the plurality of devices, the restrictive gateway preventing communication from being initiated by the node to the one of said plurality of devices such that the node waits until a further device in the private network establishes a communication with the node before the node is able to transmit data to the one of said plurality of devices, wherein said node being configured to:
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determine that a further device located in the private network has an existing connection with the node via the restrictive gateway; receive a first identifier from the one of said plurality of devices, where the first identifier is received from the one of said plurality of devices during a previous connection between the one of said plurality of devices and the node; receive a second identifier from the further device; compare the first identifier with the second identifier; and determine that the further device is located in the private network if the first identifier and the second identifier are associated with the same network; and transmit to the further device a message addressed to the one of said plurality of devices via the connection with the further device;
wherein the further device comprises means for forwarding the message to the one of said plurality of devices via a connection established within the private network.
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Specification