Cross-domain discovery between service layer systems and web of things systems
Systems and methods are introduced to enable cross-domain discovery. Systems and methods are also introduced to create representations of resources and information discovered from cross-domain discovery.
1. An apparatus comprising a processor, a memory, and communication circuitry, the apparatus being connected to a communications network via its communication circuitry, the apparatus further comprising computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to:
receive, in a first system compliant with a first communications protocol, via the communication network and from another apparatus on the network, a request message to conduct resource discovery for resources matching specified criteria, wherein the specified criteria comprises data content constraints;
determine resources in the first system that match the data content constraints of the specified criteria, wherein each resource has an associated uniform resource identifier (URI), wherein each resource comprises an interworking avatar (IA) comprising a representation of a resource from a second system, wherein the second system is not compliant with the first system and wherein the second system is compliant with a second communications protocol, wherein the representation of the resource from the second system comprises a format compliant with the first system, and wherein the IA comprises data content matching the data content constraints of the specified criteria; and
send in the first system, via the communication network and to the other apparatus on the network, a response message indicating URIs of the resources comprising IAs that comprise data content matching the data content constraints of the specified criteria.
2. The apparatus of claim 1 , wherein the request message comprises a SPARQL RDF-based query.
3. The apparatus of claim 1 , wherein the request message comprises a parameter indicating cross-domain discovery should be performed.
4. The apparatus of claim 1 , wherein the first system comprises a system compliant with a oneM2M service layer protocol.
5. The apparatus of claim 4 , wherein the IAs comprise oneM2M resource representations of WoT Things.
6. The apparatus of claim 1 , wherein the first system comprises a system compliant with a WoT protocol.
7. The apparatus of claim 6 , wherein the IAs comprise Thing representations of oneM2M resources.
8. The apparatus of claim 1 , wherein the specified criteria comprises a data content-related constraint.
9. The apparatus of claim 8 , wherein the computer-executable instructions, when executed by the processor of the apparatus, further cause the apparatus to:
send, to a cross-domain discovery service, a request message for current data of a discovered IA from the resource from the second system the IA represents; and
receive, from the cross-domain discovery service, a response message indicating current data of the IA.
10. An apparatus comprising a processor, a memory, and communication circuitry, the apparatus being connected to a communications network via its communication circuitry, the apparatus further comprising computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to:
discover, based on a request, a resource in a first system compliant with a first communications protocol; and
create, on a resource host in a second system not compliant with the first system, wherein the second system is compliant with a second communications protocol, an interworking avatar (IA) representing the discovered resource in the first system, wherein the IA comprises data content matching data content constraints specified in the request.
11. The apparatus of claim 10 , wherein the first system comprises a system compliant with a WoT protocol.
12. The apparatus of claim 11 , wherein the IA comprises a oneM2M resource representation of a WoT Thing.
13. The apparatus of claim 10 , wherein the first system comprises a system compliant with a oneM2M service layer protocol.
14. The apparatus of claim 13 , wherein the IA comprises a Thing representation of a oneM2M resource.
15. The apparatus of claim 10 , wherein the computer-executable instructions, when executed by the processor of the apparatus, further cause the apparatus to:
receive, from the second system, a request message for current data of the resource;
determine the current data of the resource; and
send, to the second system, a response message indicating current data of the resource.
16. The apparatus of claim 10 , wherein the creating is initiated before any discovery requests are received.
17. The apparatus of claim 10 , wherein the creating is initiated after receiving a request message for cross-domain discovery.
18. The apparatus of claim 10 , wherein the computer-executable instructions, when executed by the processor of the apparatus, further cause the apparatus to:
host a cross-domain discovery service.
19. The apparatus of claim 18 , wherein the cross-domain discovery service comprises a common service function of a service layer.
20. The apparatus of claim 18 , wherein the cross-domain discovery service comprises a oneM2M resource.