Page 1458 - 5G Basics - Core Network Aspects

3 Signalling aspects

overlap between each other. The interoperability testing in different cloud capabilities type is different; there
are three major interoperability testing scenarios as follows:
• infrastructure capabilities type interoperability testing
• platform capabilities type interoperability testing

• application capabilities type interoperability testing.
As shown in Figure 1, there are three different target areas of cloud computing interoperability testing as
follows:
• "CSC – CSP", dealing with interaction between CSC and CSP
• "CSP – CSP", dealing with collaboration among different CSPs
• "CSP – management", dealing with CSP management functions.

Figure 1 – Target areas of cloud computing interoperability testing

Also, the cloud architecture in terms of the common set of cloud computing functional components are
described in [ITU-T Y.3502]. Figure 2 presents a high level overview of the CCRA functional components
organized by means of the layering framework.

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