H.1 General

28.5503GPPManagement and orchestrationPerformance assuranceRelease 18TS

After network slice instance is created, 3GPP management system creates all resources to the NSI and configurations satisfy the network slice requirements, including the performance of NSI requested according to network slice SLS (as part of SLA). In order to guarantee the performance of network slice, NSI modification can be triggered by NSI provisioning service. During the NSI performance supervision, the end to end KPIs defined in TS 28.554 [21], performance measurements defined in TS 28.552[2] and optionally slice QoE provided by NWDAF in 3GPP TS 23.288 [22] should be used for SLA fulfilment evaluation. According to the evaluation result, NSI modification defined in TS 28.531[24] can be triggered for network slice performance assurance.