System Manual

BreezeCOMPACT System Manual
128
Chapter 3: Operation and Administration
Procedures
Performance Monitoring
#
KPI RReport
Unit
Description
Calculation
Guidelines
1
Air Link
Utilization
Percent
(%)
Air link utilization enables
the actual consumption of
the a
ir resource during the
sampling period to be
analyzed.
The calculation is based on
the actual consumption of
the air frame resource
blocks (RBs) as a
percentage of the
number
of RBs available for data
transport.
The utilization is
presented separately for
the DL and the UL.
100 * (Used
RBs) /
(Potential RBs
per channel
BW)
This important KPIs
to track
the system
load over time
especially in peak
hours.
2
Registered
and Active
UEs
Count
This report presents the
following information:

Number of
Registered UEs:
All UEs that are
registered to the
eNodeB (RRC
connected)

Number of Active
UEs:
UEs that are
currently using
and occupying
sector resources
(meaning those
that have DL
and/or UL data
packets)
Count Active
and Idle UEs
This report presents
a snapshot of the
number of registered
and active UEs
within the sampling
period.
It can be used for
over-subscription
validation.
3
Layer 3
Throughput
Bps
Average eNodeB traffic
over the collection period
for both DL and UL (IP
layer, excluding LTE MAC
overheads)
Number of bits
/ (sampling
period)
4
Packet Error
Rate (PER)
Downlink
Percent
(%)
Each transport block
carrying one or more
packets has a
retransmission (HARQ)
mechanism,
After the maximum
number of retransmission
s
is exceeded, the packet is
considered as a packet
with errors.
Number of DL
packet e
rrors /
total number of
bursts within
the sampling
period
Can be used to
explore (TCP)
throughput
degradation issues
(if the PER ratio is
high).