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US 10,433,234 B2Granted
SDN controlled overlay network
AssigneeIndian Institute of Technology Bombay
InventorsAbhay Karandikar, Pranav Kumar Jha, Akshatha Nayak M, Pon Nidhya Elango
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Abstract
A SDN controlled Overlay Network. Embodiments disclosed herein relate to multi-RAT (Radio Access Technology) wireless communication network and more particularly to a SDN (Software Defined Networking) controlled network overlaid on a multi-RAT wireless communication network. Embodiments herein enhance relay functionality in wireless communication networks using overlay networks, wherein the overlay network is controlled and managed by a SDN (Software Defined Networking) controller.
Claims12
An apparatus (101) for managing an overlay network in a multi-Radio Access Technology (RAT) wireless network, the apparatus (101) comprising:
- a network controller (301);
- a flow configuration module (302);
- and
- at least one interface (303), wherein the at least one interface (303) couples the network controller (301) and the flow configuration module (302) to the overlay network, wherein the overlay network comprises an AS (Application Server) (106), a packet handler (107), a DNS (Domain Name System) server (108), and a DHCP (Dynamic Host Configuration Protocol) server (109), wherein the network controller (301) is configured to:
- select at least one device (102) in the multi-RAT wireless network as a relay (102b, 102c) based on at least one radio measurement, wherein the at least one radio measurement comprises at least one or more of data transfer capability of the at least one device (102) over an air interface, location of the at least one device (102), battery life of the at least one device (102), path loss as experienced by the at least one device (102) towards at least one of a eNodeB (103) or another relay (102b) to which the at least one device (102) is connected, wherein the network controller (301) is configured to change a status of the relay (102b, 102c) to a UE (102a), when the battery life of the at least one device (102) is lower than a configurable threshold;
- provide appropriate radio configuration to the relay (102b, 102c), on selecting the at least one device (102) as a relay (102b, 102c);
- controlling association of at least one UE (User Equipment) (102a) with the relay (102b, 102c) based on at least one of channel quality, QoS (Quality of Service) characteristics of data flow to and from the UE (102a), available optimal path between the UE (102a) and the relay (102b, 102c), and load and transfer capability of the relay (102b, 102c);
- perform interference management in a supplementary radio link based on sharing of the at least one radio measurement with the network controller (301), wherein the sharing is performed by the at least one device (102) on at least one or more of periodic intervals and on pre-defined events occurring;
- and
- enable communication over the supplementary radio link between the at least one UE (102a) and the relay (102b, 102c).
7 more elements
A method for managing an overlay network in a wireless network, the method comprising:
- selecting, by a network controller (301), at least one device (102) in the wireless network as a relay (102b, 102c) by a SDN (Software Defined Networking) controller (101) based on at least one radio measurement, wherein the at least one radio measurement comprises at least one or more of data transfer capability of the device (102) over an air interface, location of the at least one device (102), battery life of the at least one device (102), path loss as experienced by the at least one device (102) towards at least one of a eNodeB (103) or another relay (102b) to which the at least one device (102) is connected, wherein changing, by the network controller (301), a status of the relay (102b, 102c) to a UE (102a), when the battery life of the at least one device (102) is lower than a configurable threshold;
- providing, by the network controller (301), radio configuration to the relay (102b, 102c) by the SDN controller (101), on selecting the at least one device (102) as a relay (102b, 102c);
- controlling, by the network controller (301), an association of at least one UE (User Equipment) (102a) with the relay (102b, 102c) by the SDN controller (101) based on at least one of channel quality, QoS (Quality of Service) characteristics of data flow to and from the UE (102a), available optimal path between the UE (102a) and the relay (102b, 102c), and load and transfer capability of the relay (102b, 102c);
- performing, by the network controller, interference management in a supplementary radio link based on sharing of the at least one radio measurement with the network controller (301), wherein the sharing is performed by the at least one device (102) on at least one or more of periodic intervals and on pre-defined events occurring;
- and
- enabling, by the network controller (301), communication over the supplementary radio link between the at least one UE (102a) and the relay (102b, 102c).
3 more elements
Dependencies are inferred from the claim text.