This KPI is defined with two variants.
This KPI is obtained by the inverse of the average end-to-end User Plane (UP) latency of the network slice divided by the energy consumption of the network slice. The unit of this KPI is (0.1ms * J)-1.
In this KPI variant, latency is the only factor considered for evaluating the performance of network slice, i.e. the performance of network slice (P
ns) for URLLC type of network slice is the inverse of the end-to-end User Plane (UP) latency of the network slice.
Where Network slice mean latency is defined as:
Network slice mean latency = DelayE2EUlNs + DelayE2EDlNs
The following KPIs are used to calculate Network slice mean latency:
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DelayE2EUlNs: Average e2e uplink delay for a network slice, defined in clause 6.3.1.8.1 of TS 28.554 as the average e2e UL packet delay between the PSA UPF and the UE for a network slice;
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DelayE2EDlNs: Average e2e downlink delay for a network slice, defined in clause 6.3.1.8.2 of TS 28.554 as the average e2e DL packet delay between the PSA UPF and the UE for a network slice.
This KPI is obtained by the product of the sum of UL and DL traffic data volumes at N3 interface(s) of the network slice multiplied by the inverse of the end-to-end User Plane (UP) latency of the network slice, divided by the energy consumption of the network slice. The unit of this KPI is bit/(0.1ms*J).
In this KPI variant, data volume and latency are two factors considered for evaluating the performance of network slice, i.e. the performance of network slice (P
ns) for URLLC type of network slice is the sum of UL and DL traffic data volumes at N3 interface(s) multiplied by the inverse of the end-to-end User Plane (UP) latency of the network slice. This solution is applicable for the case of URLLC network slice is deployed and operators want to evaluate the slice EE KPI for different periods of time such as busy time slots (more DV) and idle time slots (less DV).
The following measurements, defined in
TS 28.552, are used to calculate the sum of UL and DL traffic data volumes at N3 interface(s) of the network slice:
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GTP.InDataOctN3UPF.SNSSAI: Number of octets of incoming GTP data packets on the N3 interface, from (R)AN to UPF), where SNSSAI identifies the S-NSSAI, as defined in clause 5.4.1.3 of TS 28.552;
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GTP.OutDataOctN3UPF.SNSSAI: Number of octets of outgoing GTP data packets on the N3 interface, from (R)AN to UPF), where SNSSAI identifies the S-NSSAI, as defined in clause 5.4.1.4 of TS 28.552.
The following KPIs, defined in
TS 28.554, are used to calculate the latency of the network slice:
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DelayE2EUlNs: Average e2e uplink delay for a network slice, defined in clause 6.3.1.8.1 of TS 28.554 as the average e2e UL packet delay between the PSA UPF and the UE for a network slice;
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DelayE2EDlNs: Average e2e downlink delay for a network slice, defined in clause 6.3.1.8.2 of TS 28.554 as the average e2e DL packet delay between the PSA UPF and the UE for a network slice.