Mobile station traffic routing
View Patent ↗Devices, networks and methods relating to routing gateway traffic in a mesh network for wireless access. A mesh network has multiple nodes in at least one gateway node through which all incoming and outgoing data traffic pass through. The nodes provide wireless access to wireless and user devices, each of which is associated with a node in the mesh network. Each gateway node contains a record detailing which nodes are providing wireless access to which wireless end user device and which nodes are associated with which end user devices. This record of each end user device's location is periodically updated as the gateway node periodically receives data from the nodes which detail the device is being serviced by which node. Any incoming data traffic destined for an end user device is encapsulated and routed to the proper node servicing that end user device.
1. In a mesh network having a plurality of nodes for providing wireless access to a plurality of wireless end user devices including a first device and a second device, the first device being associated with a first home node, the second device being provided wireless access by a second roaming node and being associated with a second home node different from the second roaming node, the second roaming node and the second home node each being different from the first home node, the plurality of nodes including a gateway node for tracking the wireless end user devices and for relaying data traffic between the mesh network and another network external to the mesh network, a method of routing data traffic between the second device and the first device when the first device moves into a coverage area of a first roaming node different from each of the first home node and the second roaming node, the method comprising:
receiving only at the gateway node a notification from the first roaming node that the first device has moved into the coverage area of the first roaming node;
receiving only at the first home node a notification from the gateway node that the first device has moved into the coverage area of the first roaming node;
receiving the data traffic from the second roaming node at the first home node, the data traffic originating from the second device and being destined for the first device;
forwarding the data traffic from the first home node to the first roaming node;
determining at the first roaming node that the data traffic was received from the second roaming node;
determining that the data traffic originated from the second device and is destined for the first device;
reprogramming the first roaming node to route any further data traffic destined for the second device to the second roaming node; and
forwarding the data traffic to the first device wherein further data traffic destined for the second device at the second roaming node from the first roaming node is routed to the second device without involving the second home node or the gateway node.
2. The method according to claim 1 wherein an address of the second device is derived from an address of the second home node.
3. The method according to claim 2 wherein the address of the second device is an IP address of the second device, the address of the second home node is an IP address of the second home node, whereby the IP address of the second device is derived from the IP address of the second home node.
4. The method according to claim 2 wherein routing any further data traffic destined for the second device to the second roaming node comprises associating the further data traffic with an address of the second roaming node which is different from the address of the second home node.
5. The method according to claim 4 wherein associating the further data traffic with the address of the second roaming node comprises repackaging the further data traffic using the address of the second roaming node.
6. The method according to claim 1 wherein any further data traffic destined for the second device which is received by the second roaming node is forwarded by the second roaming node to the second device.
7. The method according to claim 1 wherein determining that the data traffic was received from the second roaming node at the first roaming node comprises determining an association between the data traffic and an address of the second roaming node.
8. The method according to claim 1 wherein determining that the data traffic originated from the second device and is destined for the first device comprises: determining an association between the data traffic and an address of the second device; and determining an association between the data traffic and an address of the first device.
9. A mesh network having a plurality of nodes for providing wireless access to a plurality of wireless end user devices including a first device and a second device, the plurality of nodes including:
a first roaming node for providing wireless access to the first device when the first device moves into a coverage area of the first roaming node, the providing including receiving data traffic from the first device;
a gateway node for tracking the wireless end user devices and for relaying data traffic between the mesh network and another network external to the mesh network, the gateway node being further for receiving a notification from the first roaming node that the first device has moved into the coverage area of the first roaming node, the first roaming node being further for sending the notification only to the gateway node;
a first home node associated with the first device, the first home node being different from the first roaming node, the first home node being for receiving from the gateway node a notification that the first device has moved into the coverage area of the first roaming node, the gateway node being further for sending the notification only to the first home node;
a second home node associated with the second device; and
a second roaming node different from the first roaming node and the second home node, the second roaming node being for receiving from the second device data traffic destined for the first device, and for forwarding the data traffic to the first home node, the first home node being further for forwarding the data traffic to the first roaming node, the first roaming node being further for:
determining that the data traffic was received from the second roaming node;
determining that the data traffic originated from the second device and is destined for the first device;
reprogramming the first roaming node to route further data traffic destined for the second device to the second roaming node; and
forwarding the data traffic to the first device wherein any further data traffic destined for the second device at the second roaming node from the first roaming node is routed to the second device without involving the second home node or the gateway node.
10. The mesh network according to claim 9 wherein an address of the second device is derived from an address of the second home node.
11. The mesh network according to claim 10 wherein routing any further data traffic destined for the second device to the second roaming node comprises associating the further data traffic with an address of the second roaming node which is different from the address of the second home node.
12. The mesh network according to claim 11 wherein associating the further data traffic with the address of the second roaming node comprises repackaging the further data traffic using the address of the second roaming node.