Connectivity Framework
3 : Connectivity Reference Architecture
feasible . We need connectivity architectures that can address the diversity of IIoT systems , while tacking the N ² challenge and enabling the vision of the industrial internet .
The rest of this section describes a connectivity reference architecture that achieves near linear scalability , O ( N ), with respect to the number of connectivity technologies . It accomplishes this by defining a small set of connectivity core standards . Standardized core gateways bridge the connectivity core standards . Domain-specific connectivity technologies need a gateway to just one of the connectivity core standards , to participate in an information exchange with the rest of the IIoT ecosystem .
3.2 CONNECTIVITY CORE STANDARDS
New connectivity technologies will need to be integrated with legacy technologies during a system ’ s lifetime . A connectivity architecture shall allow a plethora of connectivity technologies to interoperate within an industry , and across industries to support the vision of an IIoT that spans industries .
A connectivity gateway bridges one or more connectivity technologies , as shown in Figure 3-2 .
Functional Domain Other Endpoints
Other Connectivity Technologies
Endpoints Gateway
Connectivity Core Standards ( baseline )
Gateway
Other Functional Domain
Figure 3-2 : Connectivity Gateway Concept . A connectivity core standard technology ( baseline ) is one that can satisfy all of the connectivity requirements for a functional domain . Gateways provide two functions ( 1 ) integrate other connectivity technologies used within a functional domain , ( 2 ) interface with connectivity core standards in other functional domains .
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