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RNC Monitoring Counters

You can monitor some counters of the RNC object and display the number and details of overrun and

transitional counters in the selected monitoring counters on the RNC. In this way, you can obtain the

information about the performance of current RNC monitored groups.

NOTE:

The centralized network monitoring function can monitor the performance for creating the RNC or BSC6900

UMTS and their corresponding cells, which facilitates the monitoring of object performance. If you need to

use the performance monitoring function, the monitored group must be composed of RNCs or BSC6900

UMTSs, respectively. The combination of RNCs and BSC6900 UMTSs is not supported.

When creating monitored groups, you can select the counters to be monitored in the group and set the upper

and lower limits and transitional values of each monitoring counter. The overrun counters refer to the counters

whose values are greater than the upper limit or smaller than the lower limit. The transitional counters refer to

the counters whose difference of two successive values is greater than the transitional value. The system

collects statistics on overrun counters and transitional counters in real time so that you can know the

performance status of the current monitored group.

Table 1describes the RNC monitoring counters. You can click the related pane on the monitoring panel, andthen view the overrun performance counters or transitional counters in the counter list in the lower part of the

window.

Table 1 RNC Monitoring Counters

Counter Name Definition

RRC Connection Setup Success

Rate(service)The number of successful RRC connections/the number of RRC

connection set up requests received by the RNC x 100%

NOTE:

The number of RRC setup requests refers to the number ofrequests for initiating services.

AMR RAB Assignment Success Rate The number of "AMR RB setup complete" messages received

by the RNC from the UE and the RAB assignment responses

sent by the RNC to the CN/the number of AMR RAB

assignment requests received by the RNC from the CN x 100%

Where:

UE: User Equipment

CN: Core Network

RB: Radio Bearer

VP RAB Setup Success Rate The number of "VP RB setup complete" messages received by

the RNC from the UE and the RAB assignment responses sent

by the RNC to the CN/the number of VP RAB assignment

requests received by the RNC from the CN x 100%

PS RAB Assignment Success Rate The number of "PS RB setup complete" messages received by

the RNC from the UE and the RAB assignment responses sent

by the RNC to the CN/the number of PS RAB assignment

requests received by the RNC from the CN x 100%

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AMR Call Drop Rate The number of AMR service releases initiated by the RNC/the

number of AMR service setups x 100%

VP Call Drop Rate The number of VP service releases initiated by the RNC/the

number of VP service setups x 100%

PS Service Drop Rate The number of PS service releases initiated by the RNC/the

number of PS service setups x 100%

Soft Handover Success Rate The number of Active Set Update Complete messages received

by the RNC/the number of Active Set Update messages sent

by the RNC x 100%

CS Inter-RAT Handover Success

Rate(from UTRAN to GSM)The number of successful inter-system handovers in CS

domain/the number of inter-system handover attempts in CS

domain x 100%

The number of inter-system handover attempts in

CS domain is the number RELOCATION

REQUIRED messages sent by the RNC to the CN.

The number of successful inter-system handovers in

CS domain is the number of IU RELEASE

COMMAND messages received by the RNC. Thevalue of the reason in the IU RELEASE COMMAND

message must be Successful Relocation.

PS Inter-RAT Handover Success

Rate(from UTRAN to GSM)The number of successful inter-system handovers in PS

domain/the number of inter-system handover attempts in PS

domain x 100%

The number of inter-system handover attempts in

PS domain is the number of CELL CHANGE

ORDER FROM UTRAN messages sent by the RNC

to the UE.

The number of successful inter-system handovers inPS domain is the number of IU RELEASE

COMMAND messages received by the RNC. The

value of the reason in the IU RELEASE COMMAND

message must be Normal Release.

Inter-Freq Hard Handover Success Rate The number of physical link reconfiguration messages received

by the RNC/the number of physical link reconfiguration

messages sent by the RNC x 100%

Parent topic:Basic Knowledge

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