24-03-2012, 03:54 PM
GSM BSS KPI Analysis
BSS KPI.pdf (Size: 1.26 MB / Downloads: 63)
Definition
The paging success rate is the ratio of the successfully sent circuit
paging requests initiated by the MSC to all CS paging requests.
The paging requests consist of the CS paging requests initiated by
the MSC and the co-ordinated CS paging requests sent on the Gs
interface from the GPRS network.
Paging Success Rate = Successful Pagings on the Abis Interface (CS
Service)/MSC-Initiated Paging Requests for CS Service
The paging success rate lays the foundation for the wireless service.
A high paging success rate can improve multiple service KPIs on
condition that the hardware capacity is certain.
Immediate Assignment Success Rate
Constraints on Sampling Methods
Avoid sampling on occasions where burst traffic occurs.
Constraints on Sampling Environment
Coverage
Such coverage problems as blind coverage area, low coverage level,
and cross coverage, which cannot be solved through network
optimization, exist in the sampling environment.
Interference
Unavoidable inter-network interference, interference from repeaters,
or high and unavoidable intra-network interference caused by
aggressive frequency reuse exists in the sampling environment.
Immediate Assignment Success Rate
Constraints on Sampling Environment
Transmission
Avoid sampling on occasions where the transmission quality on the
Abis interface is poor and transmission links on the Abis interface are
unstable.
Device
Avoid sampling on occasions where a large number of terrestrial
resources are unavailable or devices are faulty.
Traffic volume
The traffic volume is unevenly distributed in the network. Capacity
expansion is not implemented in some cells where the congestion
ratio on SDCCH is high.