Cross-stratum optimization protocol across an interface between the service stratum and the transport stratum
An apparatus comprising an application cross-stratum optimization (CSO) gateway (ACG) coupled to an application layer that handles a plurality of servers, a network CSO gateway (NCG) coupled to a network layer that handles a plurality of network nodes and configured to communicate with the ACG using a CSO protocol (CSOP), and a CSO interface established between the ACG and the NCG that enables the exchange of a plurality of CSOP messages to allow joint application-network resource allocation, provisioning, and optimization. Also disclosed is a network apparatus implemented method comprising sending a user profile from a user plane to an application plane, sending an application profile from the application plane to a network plane via a CSO interface between an ACG and a NCG, and sending network capability information from the network plane to the application plane via the CSO interface.
1. A method, comprising:
sending a resource query from a service stratum gateway to a transport stratum gateway via an interface using a cross-stratum optimization protocol (CSOP) between the service stratum gateway and the transport stratum gateway, wherein the service stratum gateway is configured to access application related data and processes in a service stratum comprising a plurality of servers, and wherein the transport stratum gateway is configured to access network related data at a transport stratum including a plurality of network nodes;
exchanging status data for monitoring, controlling, and managing the transport network between the service stratum gateway and the transport stratum gateway across the interface to enable cross-stratum optimization of application resources and network resources; and
transmitting a reservation request from the service stratum gateway to the transport stratum gateway via the interface to reserve a guaranteed bandwidth across the transport network, wherein the reservation request including a path object having a type length value (TLV) field that carries a path identifier identifying a path to be reserved, and the reservation request comprises a service profile indicating a quality of service (QoS) an application requires of the transport network.
2. The method of claim 1 , wherein the resource query comprises a source, a destination, a bandwidth, a maximum latency, and a maximum jitter.
3. The method of claim 1 , further comprising receiving a Keep Alive message at the service stratum gateway from the transport stratum gateway.
4. The method of claim 1 , wherein the reservation request is sent to setup a new path in the transport stratum or modify an existing path in the transport stratum.
5. The method of claim 4 , wherein the resource query is sent to get a status of resources in the transport stratum to perform a cross stratum optimization calculation.
6. The method of claim 5 , further comprising receiving a response message at the service stratum gateway from the transport stratum gateway in response to the resource query, the response message comprising a status of resources in the transport stratum.
7. The method of claim 1 , wherein the reservation request comprises a service profile object generated in the service stratum and indicating data related to the request.
8. The method of claim 7 , wherein the reservation request comprises an object indicating a requested bandwidth.
9. The method of claim 7 , wherein the reservation request comprises an object indicating a bi-directional path constraint.
10. The method of claim 7 , wherein the reservation request comprises an object indicating a unidirectional path constraint.
11. The method of claim 7 , wherein the reservation request comprises an object indicating a request for a 1+1 protection across the transport stratum.
12. The method of claim 7 , wherein the reservation request further comprises performance constraint object indicating constraints for the reservation request.
13. The method of claim 12 , wherein the performance constraint object indicates a jitter bound for the request.
14. The method of claim 12 , wherein the performance constraint object indicates a latency delay bound.
15. A service stratum gateway comprising:
a transmitter configured to send a resource query to a transport stratum gateway via an interface using a cross-stratum optimization protocol (CSOP) between the service stratum gateway and the transport stratum gateway, wherein the service stratum gateway is configured to access application related data and processes in a service stratum comprising a plurality of servers, and wherein the transport stratum gateway is configured to access network related data at a transport stratum including a plurality of network nodes;
a receiver configured to receive status data for monitoring, controlling, and managing the transport network from the transport stratum gateway across the interface to enable cross-stratum optimization of application resources and network resources; and
a processor coupled to the transmitter and receiver and configured to cause the transmitter to transmit a reservation request to the transport stratum gateway via the interface to reserve a guaranteed bandwidth across the transport network, wherein the reservation request including a path object having a type length value (TLV) field that carries a path identifier identifying a path to be reserved, and the reservation request comprises a service profile indicating a quality of service (QoS) an application requires of the transport network.
16. The service stratum gateway of claim 15 , wherein the reservation request is sent to setup a new path in the transport stratum or modify an existing path in the transport stratum.
17. The service stratum gateway of claim 15 , wherein the resource query is sent to get a status of resources in the transport stratum to perform a cross stratum optimization calculation.
18. The service stratum gateway of claim 15 , wherein the receiver is further configured to receive a response message from the transport stratum gateway via the interface in response to the resource query, the response message comprising a status of resources in the transport stratum.
19. The service stratum gateway of claim 15 , wherein the resource query comprises a source, a destination, a bandwidth, a maximum latency, and a maximum jitter.