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Item Information

In order to realize convenient and effective performance measurement, the Performance Management System groups into a "measurement unit" for the "measurement items" with similar measurement purposes; and groups into a "measurement function set" for the "measurement units" with similar measurement purposes.

The measurement function set of cBSS Performance Management System includes:

BSC Overall Performance Measurement

Carrier Performance Measurement

Carrier Power Control Measurement

Carrier Channel Performance Measurement

A2 Interface Performance Measurement

MTP Signaling Link Measurement

PCF Call Processing Measurement

PCF Data Processing Measurement

BSC Data Processing Measurement

CSPU CPU Occupancy Measurement

In this part, detailed description including the meaning and measurement points will be given to the measurement item of Performance Management System according to the above classification.

BSC Overall Performance Measurement

BSC Overall Performance Measurement includes the following measurement units:

Paging Success Ratio

Location Updates

Short Message Traffic

CS Call Setup Success Ratio

PS Call Setup Success Ratio

CS Call Drop Ratio

PS Call Drop Ratio

of 53Item Information

TCH Congestion Ratio

Traffic Amount

Intra-BS Soft HO Success Ratio

Intra-SP Hard HO (within same BS) Success Ratio

Inter-SP Hard HO (within same BS) Success Ratio

Inter-BS Outgoing Hard HO Success Ratio

Inter-BS Incoming Hard HO Success Ratio

Inter-BS Soft HO Success Ratio

Hard HO Decision Algorithm

Note

Some measurement units included in BSC Overall Performance Measurement are the same as those in Carrier Performance Measurement.


Location Updates

Measurement item Item meaning & measurement point

Paging RequestsMeaning: Number of Paging Requests received.Measurement point: Paging Request sent /re-sent by the MSC is received.

Paging Responses Meaning: Number of Paging Response messages received.Measurement point: BS sends Paging Response to MSC.


Meaning: Paging Success Ratio = Paging Responses/Paging Requests*100%Measurement point: Computed item.


Location Update Requests

Meaning: Number of Location Update Request messages sent to MSC.Measurement point: BS sends Location Updating Request message to MSC.

Location Updates Meaning: Number of Location Updates within unit time. (Unit: Times/Minute)


Short Message Traffic

[BSC] CS Call Setup Success Ratio

within Unit Time Location Updates within Unit Time = Location Update Requests/Granularity Period Measurement point: Computed item.

Measurement item Meaning & measurement point

MT/PP Short Messages

Meaning: Number of ADDS page messages received by BS from MSC, and mobile identity carried by this message is not "broadcast address".Measurement point: BS receives ADDS page message issued by MSC, and mobile identity carried by this message is not "broadcast address".

Broadcast Short Messages

Meaning: Number of ADDS page messages received by BS from MSC, and mobile identity carried by this message is "broadcast address".Measurement point: BS receives ADDS page message issued by MSC, and mobile identity carried by this message is "broadcast address".

MO/PP Short Messages

Meaning: Number of ADDS Transfer messages sent by BS to MSC. Measurement point: BS sends ADDS Transfer to MSC.

TCH Downlink Messages

Meaning: Number of ADDS Deliver messages received by BS. Measurement point: BS receives ADDS Deliver message.

TCH Uplink Messages

Meaning: Number of ADDS Deliver messages sent by BS to MSC. Measurement point: BS sends ADDS Deliver to MSC.


[BSC] CS Call Attempts

Meaning: Number of Origination or Paging Response messages received in speech service calls. Measurement points:

(1) MS-originated: BS receives Origination Message.

(2) MS-terminated: BS receives Page Response Message.

[BSC] CS Assignment Attempts

Meaning: Number of Assignment Request messages received by BS in speech service calls. Measurement point: BS receives Assignment Request.

[BSC] CS TCH Ready

Meaning: Number of Channel Assignment Messages or Extended Channel Assignment Messages sent by BS to MS in speech service calls. Measurement point: BS sends Channel Assignment Message or Extended Channel Assignment Message to MS.

[BSC] Successful Acquisitions of

Meaning: Number of TCH Preamble messages received by BS in speech service calls.


[BSC] PS Call Setup Success Ratio

Reverse TCH Preambles (CS) Measurement point: BS receives TCH Preamble message.

[BSC] Successful CS Call Setups

Meaning: Number of Assignment Completed messages sent by BS to MSC in speech service calls. Measurement point: BS sends Assignment Completed message to MSC.

[BSC] CS Call Setup Failures (MSC Reject)

Meaning: Number of speech service call setup failures due to Assignment Request message not received.

[BSC] CS Call Setup Failures (MSC Reject) = [BSC] CS Call Attempts - [BSC] CS Assignment Attempts Measurement point: Computed item.

[BSC] CS Call Resource Allocation Failures

Meaning: Number of speech service call setup failures due to call resource allocation failure.

[BSC] CS Call Resource Allocation Failures = [BSC] CS Assignment Attempts - [BSC] CS TCH Ready Measurement point: Computed item.

[BSC] Reverse TCH Preamble Acquisition Failures (CS)

Meaning: Number of speech service call setup failures due to no TCH Preamble message received.

[BSC] Reverse TCH Preamble Acquisition Failures (CS) = [BSC] CS TCH Ready - [BSC] Successful Acquisitions of Reverse TCH Preambles (CS) Measurement point: Computed item.

[BSC] CS TCH Signaling Exchange Failures

Meaning: Number of speech service call setup failures which occur after TCH Preamble message is received.

[BSC] CS TCH Signaling Exchange Failures = [BSC] Successful Acquisitions of Reverse TCH Preambles (CS) - [BSC] Successful CS Call Setups Measurement point: Computed item.

[BSC] CS Call Setup Success Ratio

Meaning: [BSC] CS Call Setup Success Ratio = ([BSC] Successful CS Call Setups/[BSC] CS Call Attempts× 100%Measurement point: Computed item.


[BSC] PS Call Attempts

Meaning: Number of Origination or Paging Response messages (excluding the Origination messages with DRS=0) received in packet service calls.

Measurement points:




[BSC] PS Assignment Attempts

Meaning: Number of Assignment Request messages received by BS from the MSC in packet service calls. Measurement point: BS receives Assignment Request.

[BSC] PS TCH Ready

Meaning: Number of Channel Assignment Messages or Extended Channel Assignment Messages sent by BS to MS in packet service calls. Measurement point: BS sends Channel Assignment Message or Extended Channel Assignment Message to MS.

[BSC] Successful Acquisitions of Reverse TCH Preambles (PS)

Meaning: Number of TCH Preamble messages received by BS in packet service calls.

Measurement point: BS receives TCH Preamble message.

[BSC] Successful PS Call Setups

Meaning: Number of Assignment Completed messages sent by BS to MSC in packet service calls. Measurement point: BS sends Assignment Completed message to MSC.

[BSC] PS Call Setup Failures (MSC Reject)

Meaning: Number of call setup failures due to Assignment Request message not received.

[BSC] PS Call Setup Failures (MSC Reject)=[BSC] PS Call Attempts-[BSC] PS Assignment Attempts Measurement point: Computed item.

[BSC] PS Call Resource Allocation Failures

Meaning: Number of packet service call setup failures due to call resource allocation failure.

[BSC] PS Call Resource Allocation Failures = [BSC] PS Assignment Attempts - [BSC] PS TCH Ready Measurement point: Computed item.

[BSC] Reverse TCH Preamble Acquisition Failures (PS)

Meaning: Number of packet service call setup failures due to reverse TCH preamble acquisition failure.

[BSC] Reverse TCH Preamble Acquisition Failures (PS)= [BSC] PS TCH Ready - Successful Acquisitions of Reverse TCH Preambles (PS) Measurement point: Computed item.

[BSC] PS TCH Signaling Exchange Failures

Meaning: Number of packet service call setup failures which occur after TCH Preamble message is received.

[BSC] PS TCH Signaling Exchange Failures = [BSC] Successful Acquisitions of Reverse TCH Preambles (PS) - [BSC] Successful PS Call Setups Measurement point: Computed item.

[BSC] PS Call Setup Success Ratio

Meaning: [BSC] PS Call Setup Success Ratio = ([BSC] Successful PS Call Setups/[BSC] PS Call Attempts× 100%Measurement point: Computed item.


[BSC] CS Call Drop Ratio

[BSC] PS Call Drop Ratio


[BSC] CS Call Drops (Too many Erasure frames)

Meaning: Number of speech service call drops caused by too many Erasure frames. Measurement point: None.

[BSC] CS Call Drops (Markov calls)

Meaning: Number of speech service call drops caused by too high MARKOV frame error rate. Measurement point: None.

[BSC] CS Call Drops (No reverse frame received)

Meaning: Number of speech service call drops due to no reverse frame received. Measurement point: None.

[BSC] CS Call Drops (Abis interface abnormal)

Meaning: Number of speech service call drops due to Abis interface abnormal (including BTS resource fault, Abis link resource fault, FMR resource fault and RPS resource fault). Measurement point: None.

[BSC] CS Call Drops (A2 interface abnormal)

Meaning: Number of speech service call drops due to A interface abnormal (including abnormal release by MSC, call release due to A2 interface circuit abnormal, CIE resource fault, TIE resource fault and LIM resource fault). Measurement point: None.

[BSC] CS Call Drops (Other causes)

Meaning: Number of speech service call drops due to other causes (including system internal error and OAM interruption). Measurement point: None.

[BSC] CS Call Drop Ratio

Meaning:

[BSC] CS Call Drop Ratio =

(([BSC] CS Call Drops (Too many Erasure frames) + [BSC] CS Call Drops (Markov calls)+ [BSC] CS Call Drops (No reverse frame received) + [BSC] CS Call Drops (Abis interface abnormal) + [BSC] CS Call Drops (A2 interface abnormal) + [BSC] CS Call Drops (Other causes)) / [BSC] Successful CS Call Setups)× 100% Measurement point: Computed item.


[BSC] PS Call Drops (Too many Erasure frames)

Meaning: Number of packet service call drops due to too many Erasure frames. Measurement point: None.

[BSC] PS Call Meaning: Number of packet service call drops due to no reverse frame


[BSC] TCH Congestion Ratio

Drops (No reverse frame received)

received. Measurement point: None.

[BSC] PS Call Drops (Abis interface abnormal)

Meaning: Number of packet service call drops due to Abis interface abnormal (including BTS resource fault, Abis link resource fault, FMR resource fault and RPS resource fault). Measurement point: None.

[BSC] PS Call Drops (A2 interface abnormal)

Meaning: Number of packet service call drops due to A interface abnormal (including abnormal release by MSC, call release due to A2 interface circuit abnormal, CIE resource fault, TIE resource fault and LIM resource fault). Measurement point: None.

[BSC] PS Call Drops (PCF failure)

Meaning: Number of packet service call drops due to link fault from BS to PCF (including A8 interface fault, PPU resource fault and abnormal release by PDSN). Measurement point: None.

[BSC] PS Call Drops (Other causes)

Meaning: Number of packet service call drops due to other causes (including system internal error and OAM interruption). Measurement point: None.

[BSC] PS Call Drop Ratio

Meaning:

[BSC] PS Call Drop Ratio= (([BSC] PS Call Drops (Too many Erasure frames) + [BSC] PS Call Drops (No reverse frame received) + [BSC] PS Call Drops (Abis interface abnormal) + [BSC] PS Call Drops (A2 interface abnormal) +[BSC] PS Call Drops (PCF failure)+ [BSC] PS Call Drops (Other causes)) / [BSC] Successful PS Call Setups)× 100% Measurement point: Computed item.


[BSC] TCH Assignment Requests

Meaning: Number of TCH Assignment Requests for calls, hard handoffs and soft handoffs. Measurement point: The radio resource management module receives TCH Assignment Request.

[BSC] Successful TCH Assignments

Meaning: Number of successful TCH assignments for calls, hard handoffs and soft handoffs. Measurement point: The radio resource management module sends TCH setup message.

[BSC] TCH Assignment Failures (WALSH shortage)

Meaning: Number of TCH assignment failures due to WALSH shortage.

Measurement point: The radio resource management module sends TCH rejection message.

[BSC] TCH Meaning: Number of TCH assignment failures due to low forward


[BSC] Traffic Amount

Assignment Failures (Low forward power)

power. Measurement point: The radio resource management module sends TCH rejection message.

[BSC] TCH Assignment Failures (Low reverse power)

Meaning: Number of TCH assignment failures due to low reverse power.


[BSC] TCH Assignment Failures (Channel shortage)

Meaning: Number of TCH assignment failures due to channel element (CE) shortage. Measurement point: The radio resource management module sends TCH rejection message.

[BSC] TCH Assignment Failures (Other causes)

Meaning: Number of TCH assignment failures due to other causes.


[BSC] TCH Congestion Ratio

Meaning: [BSC] TCH Congestion Ratio = (1 - [BSC] Successful TCH Assignments / [BSC] TCH Assignment Requests)× 100%Measurement point: Computed item.


[BSC] CE Seizure Duration - Speech FCH

Meaning: Duration of CE seizure by speech service fundamental channel (FCH). (Unit: Second) Measurement point: The accumulated duration of CE seizure by speech service FCH (including soft handoff).

[BSC] CE Seizure Duration - Packet FCH

Meaning: Duration of CE seizure by packet service FCH. (Unit: Second) Measurement point: The accumulated duration of CE seizure by packet service FCH (including soft handoff).

[BSC] CE Seizure Duration - SCH

Meaning: Duration of CE seizure by packet service supplementary channel (SCH). (Unit: Second) Measurement point: The accumulated duration of CE seizure by forward packet service SCH.

[BSC] WALSH Seizure Duration

Meaning: Duration of WALSH seizure by FCH. (Unit: Second) Measurement point: The accumulated duration of WALSH seizure by FCH (including soft handoff and hard handoff).

[BSC] TCH Seizure Duration (excluding HO)

Meaning: Duration of TCH Seizure (excluding HO). (Unit: Second) Measurement point: The accumulated duration of FCH seizure by voice service and data service (excluding handoff).

[BSC] CE Traffic Density - Speech

Meaning: Densityof traffic borne by CE seized by speech service FCH (including soft handoff). (Unit: Erl)

[BSC] CE Traffic Density - Speech FCH = [BSC] CE Seizure Duration -


[BSC] Intra-BS Soft HO Success Ratio

FCH Speech FCH /(60×Granularity Period) Measurement point: Computed item.

[BSC] CE Traffic Density - Packet FCH

Meaning: Density of traffic borne by CE seized by packet service FCH (including soft handoff). (Unit: Erl)

[BSC] CE Traffic Density - Packet FCH = [BSC] CE Seizure Duration - Packet FCH /(60×Granularity Period) Measurement point: Computed item.

[BSC] CE Traffic Density - Packet SCH

Meaning: Density of traffic borne by CE seized by packet service SCH. (Unit: Erl)

[BSC] CE Traffic Density - SCH = [BSC] CE Seizure Duration - SCH /(60×Granularity Period) Measurement point: Computed item.

[BSC] WALSH Traffic Density

Meaning: Density of traffic borne by WALSH seized by all service FCH (including soft handoff and hard handoff). (Unit: Erl)

[BSC] WALSH Traffic Density= [BSC] WALSH Seizure Duration/(60×Granularity Period) Measurement point: Computed item.

[BSC] TCH Traffic Density (excluding HO)

Meaning: Density of traffic borne by TCH excluding handoff. (Unit: Erl)

[BSC] TCH Traffic Density (excluding HO)=[BSC] TCH Seizure Duration (excluding HO)/((Granularity Period)*60) Measurement point: Computed item.

[BSC] Soft HO Ratio

Meaning: FCH soft handoff ratio (excluding softer handoffs).

[BSC] Soft HO Ratio = (( [BSC] CE Traffic Density - Speech FCH + [BSC] CE Traffic Density - Packet FCH - [BSC] TCH Traffic Density (excluding HO) / [BSC] TCH Traffic Density (excluding HO))× 100% Measurement point: Computed item.


[BSC] Intra-BS Soft HO Requests

Meaning: Number of Intra-BS Soft HO Requests. Measurement point: The radio resource management module sends the soft handoff decision. Measured by number of branches added or deleted.

[BSC] Successful Intra-BS Soft HOs

Meaning: Number of successful intra-BS soft handoffs. Measurement point: BS receives Handoff Complete message. Measured by number of successful handoff branches.

[BSC] Intra-BS Soft HO Failures

Meaning: Number of intra-BS soft handoff failures caused by the target cell radio resources request failure.


[BSC] Intra-SP Hard HO (within same BS) Success Ratio

(Radio resources unavailable)

Measurement point: Radio resource allocation fails in intra-BS soft handoff procedure.

[BSC] Intra-BS Soft HO Failures (Requested Abis resources unavailable)

Meaning: Number of intra-BS soft handoff failures caused by the Abis resources request failure.

Measurement point: Abis resource allocation fails in intra-BS soft handoff procedure.

[BSC] Intra-BS Soft HO Failures (Radio interface abnormal)

Meaning: The timer expires when waiting for Handoff Complete Message. Measurement point: The timer expires when BS is waiting for Handoff Complete Message.

[BSC] Intra-BS Soft HO Failures (MS rejected)

Meaning: Number of inter-BS soft handoff failures caused by MS rejection.Measurement point: BS receives Reject Order after it sends Handoff Direction Message in intra-BS soft handoff procedure.

[BSC] Intra-BS Soft HO Failures (Other causes)

Meaning: Number of intra-BS soft handoff failures caused by other reasons. Measurement point: Inter-BS soft handoff fails due to other causes.

[BSC] Intra-BS Soft HO Success Ratio

Meaning: [BSC] Intra-BS Soft HO Success Ratio = ([BSC] Successful Intra-BS Soft HOs / [BSC] Intra-BS Soft HO Requests ×100%Measurement point: Computed item.


[BSC] Intra-SP Hard HO (within same BS) Requests

Meaning: Number of intra-SP hard handoff (within the same BS) requests .Measurement point: The source side sends intra-BS Hard Handoff Request message.

[BSC] Successful Intra-SP Hard HOs within same BS

Meaning: Number of successful intra-SP hard handoffs within the same BS.Measurement point: The source side receives the Clear command, the cause value carried by which is "Handoff successful".

[BSC] Intra-SP Hard HO (within same BS) Failures (Radio resources unavailable)

Meaning: Number of intra-SP hard handoffs within the same BS which fail due to radio resources unavailable at the target side.Measurement point: The source BS receives the Handoff Failure message, the cause value carried by which is "Radio resources unavailable".

[BSC] Intra-SP Hard HO (within same BS) Failures (Requested terrestrial resources

Meaning: Number of intra-SP hard handoffs within the same BS which fail due to terrestrial resources unavailable at the target side.

Measurement point: The source side receives the Handoff Failure message, the cause value carried by which is "Requested terrestrial


[BSC] Inter-SP Hard HO (within same BS) Success Ratio

unavailable) resources unavailable".

[BSC] Intra-SP Hard HO (within same BS) Failures (Returned to original channel)

Meaning: Number of intra-SP hard handoffs within the same BS which fail because MS fails to handoff to the target side, and remains at the source side. Measurement point: BS receives Candidate Frequency Search Report Message from MS after it sends Handoff Direction Message.

[BSC] Intra-SP Hard HO (within same BS) Failures (MS rejected)

Meaning: Number of intra-SP hard handoffs within the same BS which fail due to Reject Order received. Measurement point: BS receives Reject Order after it sends Handoff Direction Message.

[BSC] Intra-SP Hard HO (within same BS) Failures (Other causes)

Meaning: Number of intra-SP hard handoffs within the same BS which fail due to other causes. Measurement point: The timer expires when the target side waiting for Handoff Complete Message from MS.

[BSC] Intra-SP Hard HO (within same BS) Success Ratio

Meaning: Intra-SP hard handoff (within the same BS) success ratio.

[BSC] Intra-SP Hard HO (within same BS) Success Ratio= ([BSC] Successful Intra-SP Hard HOs within same BS/ [BSC]Intra-SP Hard HO (within same BS) Requests) × 100% Measurement point: Computed item.


[BSC] Inter-SP Hard HO (within same BS) Requests

Meaning: Number of inter-SP hard HO (within the same BS) requests.

Measurement point: BS sends Handoff Required message to the MSC.

[BSC] Successful Inter-SP Hard HOs within same BS

Meaning: Number of successful inter-SP hard HOs within the same BS.

Measurement point: The source BS receives Clear command, the cause value carried by which is "Handoff successful".

[BSC] Inter-SP Hard HO (within same BS) Failures (Radio resources unavailable)

Meaning: Number of inter-SP hard handoffs within the same BS which fail due to radio resources unavailable.

Measurement point: BS receives the Handoff Reject message, the cause value carried by which is "Radio resources unavailable".

[BSC] Inter-SP Hard HO (within same BS) Failures (Requested terrestrial resources unavailable)

Meaning: Number of inter-SP hard handoffs within the same BS which fail due to terrestrial resources unavailable.


[BSC] Inter-SP


[BSC] Inter-BS Outgoing Hard HO Success Ratio

Hard HO (within same BS) Failures (Returned to original channel)

Meaning: Number of inter-SP hard handoffs within the same BS which fail because MS returns to the original channel.

Measurement point: BS receives Candidate Frequency Search Report Message from MS after it sends Handoff Direction Message.

[BSC] Inter-SP Hard HO (within same BS) Failures (MS rejected)

Meaning: Number of inter-SP hard handoffs within the same BS which fail because MS is rejected. Measurement point: BS receives Reject Order after it sends Handoff Direction Message.

[BSC] Inter-SP Hard HO (within same BS) Failures (Other causes)

Meaning: Number of inter-SP hard handoffs within the same BS which fail due to other causes. Measurement point: The timer expires when the target side is waiting for Handoff Complete Message from MS.

[BSC] Inter-SP Hard HO (within same BS) Success Ratio

Meaning: Inter-SP Hard HO (within same BS) Success Ratio.

[BSC] Inter-SP Hard HO (within same BS) Success Ratio= ([BSC] Successful Inter-SP Hard HOs within same BS/ [BSC]Inter-SP Hard HO (within same BS) Requests) × 100% Measurement point: Computed item.


[BSC] Inter-BS Outgoing Hard HO Requests

Meaning: Number of Inter-BS Outgoing Hard HO Requests.


[BSC] Successful Inter-BS Outgoing Hard HOs

Meaning: Number of successful inter-BS outgoing hard handoffs. Measurement point: The source BS receives Clear command, the cause value carried by which is "Handoff successful".

[BSC] Inter-BS Outgoing Hard HO Failures (Radio resources unavailable)

Meaning: Number of inter-BS outgoing hard handoff failures caused by radio resources unavailable .


[BSC] Inter-BS Outgoing Hard HO Failures (Requested terrestrial resources unavailable)

Meaning: Number of inter-BS outgoing hard handoff failures caused by requested terrestrial resources unavailable.


[BSC] Inter-BS Outgoing Hard HO Failures (Returned to

Meaning: Number of inter-BS outgoing hard handoff failures caused by the returning of MS to original channel.

Measurement point: BS receives Candidate Frequency Search Report


[BSC] Inter-BS Incoming Hard HO Success Ratio

original channel) Message from MS after it sends Handoff Direction Message.

[BSC] Inter-BS Outgoing Hard HO Failures (MS rejected)

Meaning: Number of inter-BS outgoing hard handoff failures caused by MS rejection.Measurement point: BS receives Reject Order after it sends Handoff Direction Message.

[BSC] Inter-BS Outgoing Hard HO Failures (Other causes)

Meaning: Number of inter-BS outgoing hard handoff failures caused by other reasons.Measurement point: The timer expires when the target BS is waiting for Handoff Complete Message from MS.

[BSC] Inter-BS Outgoing Hard HO Success Ratio

Meaning: Inter-BS outgoing hard HO success ratio.

[BSC] Inter-BS Outgoing Hard HO Success Ratio = ([BSC] Successful Inter-BS Outgoing Hard HOs / [BSC] Inter-BS Outgoing Hard HO Requests ×100% Measurement point: Computed item.


[BSC] Inter-BS Incoming Hard HO Requests

Meaning: Number of Inter-BS Incoming Hard HO Requests.

Measurement point: Handoff Reject message is received from the MSC.

[BSC] Successful Inter-BS Incoming Hard HOs

Meaning: Number of successful inter-BS incoming hard handoffs.

Measurement point: Handoff Complete message is sent to the MSC.

[BSC] Inter-BS Incoming Hard HO Failures (Resource allocation failed)

Meaning: Number of inter-BS incoming hard handoff failures caused by resource allocation failure.Measurement point: The target BS receives Handoff request message but fails to get the requested call resources, and sends Handoff Failure to the MSC.

[BSC] Inter-BS Incoming Hard HO Failures (Execution failed)

Meaning: Number of inter-BS incoming hard handoff failures caused by execution failure.Measurement points:

(1) Speech service call: The timer expires when BS is waiting for Handoff Completion message from MS times out, and then BS sends Handoff Failure to the MSC.

(2) Packet service call: The timer expires when BS is waiting for Handoff Completion message or A9-AL Connected Ack, and then BS sends Handoff Failure to the MSC.

[BSC] Inter-BS Incoming Hard

Meaning: Number of inter-BS incoming hard handoff failures because the execution is interrupted by the MSC.


[BSC] Inter-BS Soft HO Success Ratio

HO Failures (Interrupted by MSC)

Measurement point: The target BS receives Clear Command from the MSC after it receives Handoff Request and responds with Handoff Request Ack and before it sends Handoff Complete or Handoff Failure to the MSC.

[BSC] Inter-BS Incoming Hard HO Failures (Other causes)

Meaning: Number of intra-BS incoming hard handoff failures due to other causes.Measurement point: The target BS receives the Clear message from the bottom layer.

[BSC] Inter-BS Incoming Hard HO Success Ratio

Meaning: inter-BS incoming hard HO success ratio.

[BSC] Inter-BS Incoming Hard HO Success Ratio = ([BSC] Successful Inter-BS Incoming Hard HOs / [BSC] Inter-BS Incoming Hard HO Requests ×100% Measurement point: Computed item.


[BSC] Inter-BS Soft HO Requests

Meaning: Number of Inter-BS Soft HO Requests. Measurement point: BS sends A7-Handoff Request message.

[BSC] Successful Inter-BS Soft HOs

Meaning: Number of successful inter-BS soft handoffs. Measurement point: Handoff Complete message received by BS.

[BSC] Inter-BS Soft HO Failures (Radio resources unavailable)

Meaning: Number of inter-BS soft handoff failures caused by unavailable radio resources at the target side.Measurement point: The source BS receives A7-Handoff Request Ack, the cause value carried by which is "No radio resource available".

[BSC] Inter-BS Soft HO Failures (Requested Abis resources unavailable)

Meaning: Number of inter-BS soft handoff failures caused by unavailable requested Abis resources.

Measurement point: Temporarily not measured.

[BSC] Inter-BS Soft HO Failures (Radio interface fault)

Meaning: Number of inter-BS soft handoff failures caused by radio interface fault.Measurement point: The timer expires when BS is waiting for Handoff Complete Message.

[BSC] Inter-BS Soft HO Failures (MS rejected)

Meaning: Number of inter-BS soft handoff failures caused by MS rejection.Measurement point: BS receives Reject Order after it sends Handoff Direction Message.

[BSC] Inter-BS Soft HO Failures (A3 link setup failed)

Meaning: Number of inter-BS soft handoff failures caused by A3 link setup failure.Measurement point: The timer expires when BS is waiting for A3-Connect Ack, or A3-Connect Ack carries failure indication.


[BSC] Hard HO Decision Algorithm

Carrier Performance Measurement

Carrier Performance Measurement includes the following measurement units:

CS Call Setup Success Ratio

PS Call Setup Success Ratio

CS Call Drop Ratio

PS Call Drop Ratio

TCH Congestion Ratio

Traffic Amount

Intra-BS Soft HO Success Ratio

[BSC] Inter-BS Soft HO Failures (Other causes)

Meaning: Number of inter-BS soft handoff failures caused by other reasons. Measurement point: Inter-BS soft handoff fails due to other causes.

[BSC] Inter-BS Soft HO Success Ratio

Meaning: Inter-BS soft handoff success ratio.

[BSC] Inter-BS Soft HO Success Ratio = ([BSC] Successful Inter-BS Soft HOs / [BSC] Inter-BS Soft HO Requests ×100% Measurement point: Computed item.


[BSC] Hard HO Requests (Pseudo Pilot)

Meaning: Number of pseudo pilot hard handoffs triggered by BS. Measurement point: BS receives PSMM and triggers pseudo pilot hard handoff.

[BSC] Hard HO Requests (Mobile assisted)

Meaning: Number of mobile assisted hard handoffs triggered by BS. Measurement point: BS receives PSMM and CFSRPM, and triggers mobile assisted hard handoff.

[BSC] Hard HO Requests (Same-frequency)

Meaning: Number of intra-frequency hard handoffs triggered by BS. Measurement point: BS receives PSMM and triggers intra-frequency hard handoff.

[BSC] Hard HO Requests (Handdown)

Meaning: Number of handdown hard handoffs triggered by BS.Measurement point: BS receives PSMM and triggers handdown hard handoff.

[BSC] Hard HO Requests (Direct)

Meaning: Number of direct hard handoffs triggered by BS.Measurement point: BS receives PSMM and triggers direct hard handoff.


Intra-SP Hard HO (within same BS) Success Ratio

Inter-SP Hard HO (within same BS) Success Ratio

Inter-BS Outgoing Hard HO Success Ratio

Inter-BS Incoming Hard HO Success Ratio

Inter-BS Soft HO Success Ratio

[Carrier] CS Call Setup Success Ratio


[Carrier] CS Call Attempts

Meaning: Number of Origination or Paging Response messages received in speech service calls. Measurement points:



[Carrier] CS Assignment Attempts

Meaning: Number of Assignment Request messages received by BS in speech service calls. Measurement point: BS receives Assignment Request.

[Carrier] CS TCH Ready

Meaning: Number of Channel Assignment Messages or Extended Channel Assignment Messages sent by BS to MS in speech service calls. Measurement point: BS sends Channel Assignment Message or Extended Channel Assignment Message to MS.

[Carrier] Successful Acquisitions of Reverse TCH Preambles (CS)

Meaning: Number of TCH Preamble messages received by BS in speech service calls.


[Carrier] Successful CS Call Setups

Meaning: Number of Assignment Completed messages sent by BS to MSC in speech service calls. Measurement point: BS sends Assignment Completed message to MSC.

[Carrier] CS Call Setup Failures (MSC Reject)

Meaning: Number of speech service call setup failures due to Assignment Request message not received.

[Carrier] CS Call Setup Failures (MSC Reject) = [Carrier] CS Call Attempts - [Carrier] CS Assignment Attempts Measurement point: Computed item.

[Carrier] CS Call Resource Allocation

Meaning: Number of speech service call setup failures due to call resource allocation failure.

[Carrier] CS Call Resource Allocation Failures = [Carrier] CS


[Carrier] PS Call Setup Success Ratio

Failures Assignment Attempts - [Carrier] CS TCH Ready Measurement point: Computed item.

[Carrier] Reverse TCH Preamble Acquisition Failures (CS)

Meaning: Number of speech service call setup failures due to no TCH Preamble message received.

[Carrier] Reverse TCH Preamble Acquisition Failures (CS)= [Carrier] CS TCH Ready - [Carrier] Successful Acquisitions of Reverse TCH Preambles (CS) Measurement point: Computed item.

[Carrier] CS TCH Signaling Exchange Failures

Meaning: Number of speech service call setup failures which occur after TCH Preamble message is received.

[Carrier] CS TCH Signaling Exchange Failures = [Carrier] Successful Acquisitions of Reverse TCH Preambles (CS) - [Carrier] Successful CS Call Setups Measurement point: Computed item.

[Carrier] CS Call Setup Success Ratio

Meaning: [Carrier] CS Call Setup Success Ratio = ([Carrier] Successful CS Call Setups/[Carrier] CS Call Attempts× 100%Measurement point: Computed item.


[Carrier] PS Call Attempts

Meaning: Number of Origination or Paging Response messages (excluding the Origination messages with DRS=0) received in packet service calls. Measurement points:



[Carrier] PS Assignment Attempts

Meaning: Number of Assignment Request messages received by BS from the MSC in packet service calls. Measurement point: BS receives Assignment Request.

[Carrier] PS TCH Ready

Meaning: Number of Channel Assignment Messages or Extended Channel Assignment Messages sent by BS to MS in packet service calls. Measurement point: BS sends Channel Assignment Message or Extended Channel Assignment Message to MS.

[Carrier] Successful Acquisitions of Reverse TCH Preambles (PS)

Meaning: Number of TCH Preamble messages received by BS in packet service calls.


[Carrier] Meaning: Number of Assignment Completed messages sent by BS to


[Carrier] CS Call Drop Ratio

Successful PS Call Setups

MSC in packet service calls. Measurement point: BS sends Assignment Completed message to MSC.

[Carrier] PS Call Setup Failures (MSC Reject)

Meaning: Number of call setup failures due to Assignment Request message not received.

[Carrier] PS Call Setup Failures (MSC Reject)=[Carrier] PS Call Attempts-[Carrier] PS Assignment Attempts Measurement point: Computed item.

[Carrier] PS Call Resource Allocation Failures

Meaning: Number of packet service call setup failures due to call resource allocation failure.

[Carrier] PS Call Resource Allocation Failures = [Carrier] PS Assignment Attempts - [Carrier] PS TCH Ready Measurement point: Computed item.

[Carrier] Reverse TCH Preamble Acquisition Failures (PS)

Meaning: Number of packet service call setup failures due to reverse TCH preamble acquisition failure.

[Carrier] Reverse TCH Preamble Acquisition Failures (PS)= [Carrier] PS TCH Ready - Successful Acquisitions of Reverse TCH Preambles (PS) Measurement point: Computed item.

[Carrier] PS TCH Signaling Exchange Failures

Meaning: Number of packet service call setup failures which occur after TCH Preamble message is received.

[Carrier] PS TCH Signaling Exchange Failures = [Carrier] Successful Acquisitions of Reverse TCH Preambles (PS) - [Carrier] Successful PS Call Setups Measurement point: Computed item.

[Carrier] PS Call Setup Success Ratio

Meaning: [Carrier] PS Call Setup Success Ratio = ([Carrier] Successful PS Call Setups/[Carrier] PS Call Attempts× 100%Measurement point: Computed item.


[Carrier] CS Call Drops (Too many Erasure frames)

Meaning: Number of speech service call drops caused by too many Erasure frames. Measurement point: None.

[Carrier] CS Call Drops (Markov calls)

Meaning: Number of speech service call drops caused by too high MARKOV frame error rate. Measurement point: None.

[Carrier] CS Call Drops (No reverse frame received)

Meaning: Number of speech service call drops due to no reverse frame received. Measurement point: None.


[Carrier] PS Call Drop Ratio

[Carrier] CS Call Drops (Abis interface abnormal)

Meaning: Number of speech service call drops due to Abis interface abnormal (including BTS resource fault, Abis link resource fault, FMR resource fault and RPS resource fault). Measurement point: None.

[Carrier] CS Call Drops (A2 interface abnormal)

Meaning: Number of speech service call drops due to A interface abnormal (including abnormal release by MSC, call release due to A2 interface circuit abnormal, CIE resource fault, TIE resource fault and LIM resource fault). Measurement point: None.

[Carrier] CS Call Drops (Other causes)

Meaning: Number of speech service call drops due to other causes (including system internal error and OAM interruption). Measurement point: None.

[Carrier] CS Call Drop Ratio

Meaning:

[Carrier] CS Call Drop Ratio =

(([Carrier] CS Call Drops (Too many Erasure frames) + [Carrier] CS Call Drops (Markov calls)+ [Carrier] CS Call Drops (No reverse frame received) + [Carrier] CS Call Drops (Abis interface abnormal) + [Carrier] CS Call Drops (A2 interface abnormal) + [Carrier] CS Call Drops (Other causes)) / [Carrier] Successful CS Call Setups)× 100% Measurement point: Computed item.


[Carrier] PS Call Drops (Too many Erasure frames)

Meaning: Number of packet service call drops due to too many Erasure frames. Measurement point: None.

[Carrier] PS Call Drops (No reverse frame received)

Meaning: Number of packet service call drops due to no reverse frame received. Measurement point: None.

[Carrier] PS Call Drops (Abis interface abnormal)

Meaning: Number of packet service call drops due to Abis interface abnormal (including BTS resource fault, Abis link resource fault, FMR resource fault and RPS resource fault). Measurement point: None.

[Carrier] PS Call Drops (A2 interface abnormal)

Meaning: Number of packet service call drops due to A interface abnormal (including abnormal release by MSC, call release due to A2 interface circuit abnormal, CIE resource fault, TIE resource fault and LIM resource fault). Measurement point: None.

[Carrier] PS Call Drops (PCF

Meaning: Number of packet service call drops due to link fault from BS to PCF (including A8 interface fault, PPU resource fault and abnormal


[Carrier] TCH Congestion Ratio

failure) release by PDSN). Measurement point: None.

[Carrier] PS Call Drops (Other causes)

Meaning: Number of packet service call drops due to other causes (including system internal error and OAM interruption). Measurement point: None.

[Carrier] PS Call Drop Ratio

Meaning:

[Carrier] PS Call Drop Ratio= (([Carrier] PS Call Drops (Too many Erasure frames) + [Carrier] PS Call Drops (No reverse frame received) + [Carrier] PS Call Drops (Abis interface abnormal) + [Carrier] PS Call Drops (A2 interface abnormal) +[Carrier] PS Call Drops (PCF failure)+ [Carrier] PS Call Drops (Other causes)) / [Carrier] Successful PS Call Setups)× 100% Measurement point: Computed item.


[Carrier] TCH Assignment Requests

Meaning: Number of TCH Assignment Requests for calls, hard handoffs and soft handoffs. Measurement point: The radio resource management module receives TCH Assignment Request.

[Carrier] Successful TCH Assignments

Meaning: Number of successful TCH assignments for calls, hard handoffs and soft handoffs. Measurement point: The radio resource management module sends TCH setup message.

[Carrier] TCH Assignment Failures (WALSH shortage)

Meaning: Number of TCH assignment failures due to WALSH shortage.


[Carrier] TCH Assignment Failures (Low forward power)

Meaning: Number of TCH assignment failures due to low forward power. Measurement point: The radio resource management module sends TCH rejection message.

[Carrier] TCH Assignment Failures (Low reverse power)

Meaning: Number of TCH assignment failures due to low reverse power.


[Carrier] TCH Assignment Failures (Channel shortage)

Meaning: Number of TCH assignment failures due to channel element (CE) shortage. Measurement point: The radio resource management module sends TCH rejection message.

[Carrier] TCH Assignment

Meaning: Number of TCH assignment failures due to other causes.


[Carrier] Traffic Amount

Failures (Other causes)


[Carrier] TCH Congestion Ratio

Meaning: [Carrier] TCH Congestion Ratio = (1 - [Carrier] Successful TCH Assignments / [Carrier] TCH Assignment Requests)× 100%Measurement point: Computed item.


[Carrier] CE Seizure Duration - Speech FCH

Meaning: Duration of CE seizure by speech service fundamental channel (FCH). (Unit: Second) Measurement point: The accumulated duration of CE seizure by speech service FCH (including soft handoff).

[Carrier] CE Seizure Duration - Packet FCH

Meaning: Duration of CE seizure by packet service FCH. (Unit: Second) Measurement point: The accumulated duration of CE seizure by packet service FCH (including soft handoff).

[Carrier] CE Seizure Duration - SCH

Meaning: Duration of CE seizure by packet service supplementary channel (SCH). (Unit: Second) Measurement point: The accumulated duration of CE seizure by forward packet service SCH.

[Carrier] WALSH Seizure Duration

Meaning: Duration of WALSH seizure by FCH. (Unit: Second) Measurement point: The accumulated duration of WALSH seizure by FCH (including soft handoff and hard handoff).

[Carrier] CE Traffic Density - Speech FCH

Meaning: Density of traffic borne by CE seized by speech service FCH (including soft handoff). (Unit: Erl)

[Carrier] CE Traffic Density - Speech FCH = [Carrier] CE Seizure Duration - Speech FCH /(60×Granularity Period) Measurement point: Computed item.

[Carrier] CE Traffic Density - Packet FCH

Meaning: Density of traffic borne by CE seized by packet service FCH (including soft handoff). (Unit: Erl)

[Carrier] CE Traffic Density - Packet FCH = [Carrier] CE Seizure Duration - Packet FCH / (60×Granularity Period) Measurement point: Computed item.

[Carrier] CE Traffic Density - Packet SCH

Meaning: Density of traffic borne by CE seized by packet service SCH. (Unit: Erl)

[Carrier] CE Traffic Density - SCH = [Carrier] CE Seizure Duration - SCH /(60×Granularity Period) Measurement point: Computed item.

Meaning: Density of traffic borne by WALSH seized by all service FCH (including soft handoff and hard handoff). (Unit: Erl)


[Carrier] Intra-BS Soft HO Success Ratio

[Carrier] WALSH Traffic Density

[Carrier] WALSH Traffic Density= [Carrier] WALSH Seizure Duration / (60×Granularity Period)

Measurement point: Computed item.

[Carrier] TCH Traffic Density (excluding HO)

Meaning: Density of traffic borne by TCH excluding handoff. (Unit: Erl)

[Carrier] TCH Traffic Density (excluding HO)=[Carrier] TCH Seizure Duration (excluding HO) / ((Granularity Period)*60) Measurement point: Computed item.


[Carrier] Intra-BS Soft HO Requests

Meaning: Number of Intra-BS Soft HO Requests. Measurement point: The radio resource management module sends the soft handoff decision. Measured by number of branches added or deleted.

[Carrier] Successful Intra-BS Soft HOs

Meaning: Number of successful intra-BS soft handoffs. Measurement point: BS receives Handoff Complete message. Measured by number of successful handoff branches.

[Carrier] Intra-BS Soft HO Failures (Radio resources unavailable)

Meaning: Number of intra-BS soft handoff failures caused by the target cell radio resources request failure.Measurement point: Radio resource allocation fails in intra-BS soft handoff procedure.

[Carrier] Intra-BS Soft HO Failures (Requested Abis resources unavailable)

Meaning: Number of intra-BS soft handoff failures caused by the Abis resources request failure.

Measurement point: Abis resource allocation fails in intra-BS soft handoff procedure.

[Carrier] Intra-BS Soft HO Failures (Radio interface abnormal)

Meaning: The timer expires when waiting for Handoff Complete Message. Measurement point: The timer expires when BS is waiting for Handoff Complete Message.

[Carrier] Intra-BS Soft HO Failures (MS rejected)

Meaning: Number of inter-BS soft handoff failures caused by MS rejection.Measurement point: BS receives Reject Order after it sends Handoff Direction Message in intra-BS soft handoff procedure.

[Carrier] Intra-BS Soft HO Failures (Other causes)

Meaning: Number of intra-BS soft handoff failures caused by other reasons. Measurement point: Inter-BS soft handoff fails due to other causes.

[Carrier] Intra-BS Soft HO Success Ratio

Meaning: [Carrier] Intra-BS Soft HO Success Ratio = ([Carrier] Successful Intra-BS Soft HOs / [Carrier] Intra-BS Soft HO Requests ×100%Measurement point: Computed item.


[Carrier] Intra-SP Hard HO (within same BS) Success Ratio

[Carrier] Inter-SP Hard HO (within same BS) Success Ratio


[Carrier] Intra-SP Hard HO (within same BS) Requests

Meaning: Number of intra-SP hard handoff (within the same BS) requests .Measurement point: The source side sends intra-BS Hard Handoff Request message.

[Carrier] Successful Intra-SP Hard HOs within same BS

Meaning: Number of successful intra-SP hard handoffs within the same BS.Measurement point: The source side receives the Clear command, the cause value carried by which is "Handoff successful".

[Carrier] Intra-SP Hard HO (within same BS) Failures (Radio resources unavailable)

Meaning: Number of intra-SP hard handoffs within the same BS which fail due to radio resources unavailable at the target side.Measurement point: The source BS receives the Handoff Failure message, the cause value carried by which is "Radio resources unavailable".

[Carrier] Intra-SP Hard HO (within same BS) Failures (Requested terrestrial resources unavailable)

Meaning: Number of intra-SP hard handoffs within the same BS which fail due to terrestrial resources unavailable at the target side.

Measurement point: The source side receives the Handoff Failure message, the cause value carried by which is "Requested terrestrial resources unavailable".

[Carrier] Intra-SP Hard HO (within same BS) Failures (Returned to original channel)

Meaning: Number of intra-SP hard handoffs within the same BS which fail because MS fails to handoff to the target side, and remains at the source side. Measurement point: BS receives Candidate Frequency Search Report Message from MS after it sends Handoff Direction Message.

[Carrier] Intra-SP Hard HO (within same BS) Failures (MS rejected)

Meaning: Number of intra-SP hard handoffs within the same BS which fail due to Reject Order received. Measurement point: BS receives Reject Order after it sends Handoff Direction Message.

[Carrier] Intra-SP Hard HO (within same BS) Failures (Other causes)

Meaning: Number of intra-SP hard handoffs within the same BS which fail due to other causes. Measurement point: The timer expires when the target side waiting for Handoff Complete Message from MS.

[Carrier] Intra-SP Hard HO (within same BS) Success Ratio

Meaning: Intra-SP hard handoff (within the same BS) success ratio.

[Carrier] Intra-SP Hard HO (within same BS) Success Ratio= ([Carrier] Successful Intra-SP Hard HOs within same BS/ [Carrier] Intra-SP Hard HO (within same BS) Requests) × 100% Measurement point: Computed item.


[Carrier] Inter-BS Outgoing Hard HO Success Ratio


[Carrier] Inter-SP Hard HO (within same BS) Requests

Meaning: Number of inter-SP hard HO (within the same BS) requests.


[Carrier] Successful Inter-SP Hard HOs within same BS

Meaning: Number of successful inter-SP hard HOs within the same BS.


[Carrier] Inter-SP Hard HO (within same BS) Failures (Radio resources unavailable)

Meaning: Number of inter-SP hard handoffs within the same BS which fail due to radio resources unavailable.


[Carrier] Inter-SP Hard HO (within same BS) Failures (Requested terrestrial resources unavailable)

Meaning: Number of inter-SP hard handoffs within the same BS which fail due to terrestrial resources unavailable.


[Carrier] Inter-SP Hard HO (within same BS) Failures (Returned to original channel)

Meaning: Number of inter-SP hard handoffs within the same BS which fail because MS returns to the original channel.


[Carrier] Inter-SP Hard HO (within same BS) Failures (MS rejected)

Meaning: Number of inter-SP hard handoffs within the same BS which fail because MS is rejected. Measurement point: BS receives Reject Order after it sends Handoff Direction Message.

[Carrier] Inter-SP Hard HO (within same BS) Failures (Other causes)

Meaning: Number of inter-SP hard handoffs within the same BS which fail due to other causes. Measurement point: The timer expires when the target side is waiting for Handoff Complete Message from MS.

[Carrier] Inter-SP Hard HO (within same BS) Success Ratio

Meaning: Inter-SP Hard HO (within same BS) Success Ratio.

[Carrier] Inter-SP Hard HO (within same BS) Success Ratio= ([Carrier] Successful Inter-SP Hard HOs within same BS/ [Carrier] Inter-SP Hard HO (within same BS) Requests) × 100% Measurement point: Computed item.



[Carrier] Inter-BS Incoming Hard HO Success Ratio

[Carrier] Inter-BS Outgoing Hard HO Requests

Meaning: Number of Inter-BS Outgoing Hard HO Requests.


[Carrier] Successful Inter-BS Outgoing Hard HOs

Meaning: Number of successful inter-BS outgoing hard handoffs.


[Carrier] Inter-BS Outgoing Hard HO Failures (Radio resources unavailable)

Meaning: Number of inter-BS outgoing hard handoff failures caused by radio resources unavailable .


[Carrier] Inter-BS Outgoing Hard HO Failures (Requested terrestrial resources unavailable)

Meaning: Number of inter-BS outgoing hard handoff failures caused by requested terrestrial resources unavailable.


[Carrier] Inter-BS Outgoing Hard HO Failures (Returned to original channel)

Meaning: Number of inter-BS outgoing hard handoff failures caused by the returning of MS to original channel.


[Carrier] Inter-BS Outgoing Hard HO Failures (MS rejected)

Meaning: Number of inter-BS outgoing hard handoff failures caused by MS rejection.Measurement point: BS receives Reject Order after it sends Handoff Direction Message.

[Carrier] Inter-BS Outgoing Hard HO Failures (Other causes)

Meaning: Number of inter-BS outgoing hard handoff failures caused by other reasons.Measurement point: The timer expires when the target BS is waiting for Handoff Complete Message from MS.

[Carrier] Inter-BS Outgoing Hard HO Success Ratio

Meaning: Inter-BS outgoing hard HO success ratio.

[Carrier] Inter-BS Outgoing Hard HO Success Ratio = ([Carrier] Successful Inter-BS Outgoing Hard HOs / [Carrier] Inter-BS Outgoing Hard HO Requests ×100% Measurement point: Computed item.


[Carrier] Inter-BS Incoming Hard HO Requests

Meaning: Number of Inter-BS Incoming Hard HO Requests.

Measurement point: Handoff Reject message is received from the MSC.


[Carrier] Inter-BS Soft HO Success Ratio

[Carrier] Successful Inter-BS Incoming Hard HOs

Meaning: Number of successful inter-BS incoming hard handoffs.

Measurement point: Handoff Complete message is sent to the MSC.

[Carrier] Inter-BS Incoming Hard HO Failures (Resource allocation failed)

Meaning: Number of inter-BS incoming hard handoff failures caused by resource allocation failure.Measurement point: The target BS receives Handoff request message but fails to get the requested call resources, and sends Handoff Failure to the MSC.

[Carrier] Inter-BS Incoming Hard HO Failures (Execution failed)

Meaning: Number of inter-BS incoming hard handoff failures caused by execution failure.Measurement points:

(1) Speech service call: The timer expires when BS is waiting for Handoff Completion message from MS times out, and then BS sends Handoff Failure to the MSC.

(2) Packet service call: The timer expires when BS is waiting for Handoff Completion message or A9-AL Connected Ack, and then BS sends Handoff Failure to the MSC.

[Carrier] Inter-BS Incoming Hard HO Failures (Interrupted by MSC)

Meaning: Number of inter-BS incoming hard handoff failures because the execution is interrupted by the MSC. Measurement point: The target BS receives Clear Command from the MSC after it receives Handoff Request and responds with Handoff Request Ack and before it sends Handoff Complete or Handoff Failure to the MSC.

[Carrier] Inter-BS Incoming Hard HO Failures (Other causes)

Meaning: Number of intra-BS incoming hard handoff failures due to other causes.Measurement point: The target BS receives the Clear message from the bottom layer.

[Carrier] Inter-BS Incoming Hard HO Success Ratio

Meaning: inter-BS incoming hard HO success ratio.

[Carrier] Inter-BS Incoming Hard HO Success Ratio = ([Carrier] Successful Inter-BS Incoming Hard HOs / [Carrier] Inter-BS Incoming Hard HO Requests ×100% Measurement point: Computed item.


[Carrier] Inter-BS Soft HO Requests

Meaning: Number of Inter-BS Soft HO Requests. Measurement point: BS sends A7-Handoff Request message.

[Carrier] Successful Inter-

Meaning: Number of successful inter-BS soft handoffs.

Measurement point: Handoff Complete message received by BS.


Carrier Power Control Measurement

Carrier Power Control Measurement provides statistic and measurement data for such item parameters as average carrier transmitting power, Eb/Nt, RSSI and FER. Measurement items are calculated upon the CSPU board, from which the BAM then acquires statistic data. It only includes one measurement unit.

Link Information Measurement

Link Information Measurement

BS Soft HOs

[Carrier] Inter-BS Soft HO Failures (Radio resources unavailable)

Meaning: Number of inter-BS soft handoff failures caused by unavailable radio resources at the target side.Measurement point: The source BS receives A7-Handoff Request Ack, the cause value carried by which is "No radio resource available".

[Carrier] Inter-BS Soft HO Failures (Requested Abis resources unavailable)

Meaning: Number of inter-BS soft handoff failures caused by unavailable requested Abis resources.

Measurement point: Temporarily not measured.

[Carrier] Inter-BS Soft HO Failures (Radio interface fault)

Meaning: Number of inter-BS soft handoff failures caused by radio interface fault.Measurement point: The timer expires when BS is waiting for Handoff Complete Message.

[Carrier] Inter-BS Soft HO Failures (MS rejected)

Meaning: Number of inter-BS soft handoff failures caused by MS rejection.Measurement point: BS receives Reject Order after it sends Handoff Direction Message.

[Carrier] Inter-BS Soft HO Failures (A3 link setup failed)

Meaning: Number of inter-BS soft handoff failures caused by A3 link setup failure.Measurement point: The timer expires when BS is waiting for A3-Connect Ack, or A3-Connect Ack carries failure indication.

[Carrier] Inter-BS Soft HO Failures (Other causes)

Meaning: Number of inter-BS soft handoff failures caused by other reasons. Measurement point: Inter-BS soft handoff fails due to other causes.

[Carrier] Inter-BS Soft HO Success Ratio

Meaning: Inter-BS soft handoff success ratio.

[Carrier] Inter-BS Soft HO Success Ratio = ([Carrier] Successful Inter-BS Soft HOs / [Carrier] Inter-BS Soft HO Requests ×100% Measurement point: Computed item.


Meaning: Average Eb/Nt of the reverse link. (Unit: dB)


Carrier Channel Performance Measurement

Carrier Channel Performance Measurement provides statistic and measurement data for the number of control channels, channel load, channel available ratio, etc. It includes the following measurement units:

Channel Load Measurement

Control Channels

TCH Available Ratio

Channel Load Measurement

Control Channels

Average Eb/Nt

Calculation formula: 21 + (x - 255)×0.25 = dB

For example: If the reported value is 199, the result is 21+(199-255)×0.25 = 21 - 14 = 7dB.

Measurement point: The radio resource management module acquires Eb/Nt information from link status report. Then it calculates the average value in 5 minutes.

Average RSSI

Meaning: Average received signal strength of carrier. (Unit: dB)Measurement point: The radio resource management module acquires RSSI information from common measurement report. Then it calculates the average value in 5 minutes.

Reverse Link Average FER of Carrier

Meaning: Frame error rate on the reverse channels. (Unit: %) Measurement point: The radio resource management module acquires FER information from link status report. Then it calculates the average value in 5 minutes.

Average Transmit Power of Carrier

Meaning: The average transmit power of carrier (including control channel and traffic channel). (Unit: dBm)Measurement point: The radio resource management module acquires the transmit power information of carrier from common measurement report. Then it calculates the average value in 5 minutes.


Forward Load of Carrier

Meaning: Forward load of current carrier. The forward load is the ratio of current transmitting power to max. transmitting ratio of carrier.Measurement point: The radio resource management module updates carrier forward load according to BT report content, upon receipt of common measurement report.

Reverse Load of Carrier

Meaning: Temporarily set to 0. Measurement point: None.


TCH Available Ratio

A2 Interface Performance Measurement

A2 Interface Performance Measurement provides statistic and measurement data for such item parameters as the number of E1 faults, the number of MSC resetting circuits and the number of failures in assigning QCELP 13K, QCELP 8K or EVRC. It only includes one measurement unit.

A2 Interface Measurement

A2 Interface Measurement


Control Channels

Meaning: Number of forward common channels of sector carrier.Measurement points:

(1) The number of control channels is measured when carrier status (management status, operating status) changes.

(2) The result is set to 0 when the carrier is unavailable.


Configured TCHs

Meaning: Number of traffic channels configured in the sector carrier.Measurement point: As a fixed number of traffic channels are configured in every carrier, the value of this measurement shall be provided by every correctly configured carrier.

Available TCHs

Meaning: Number of available traffic channels in the sector carrier.Measurement points:

(1) The number of available traffic channels is updated when carrier status (management status, operating status) changes.

(2) The result is set to 0 when the carrier is unavailable.

(3) When the carrier becomes available, the result is the number configured.


Calls Disconnected due to MSC Resetting Circuits

Meaning: Number of calls which are disconnected because the MSC sends "Reset CIC". Measurement point: BS receives a Reset CIC message sent by the MSC and there is a call ongoing in this circuit.

Calls Meaning: Number of calls which are disconnected due to E1 failures.


MTP Signaling Link Measurement

Disconnected due to Circuit Failures

Measurement point: E1 status fault occurs and there is call ongoing in the circuit of the E1. Counted once for every voice circuit.

Circuit Resets due to SCCP Link Interruption

Meaning: Number of Reset CIC messages sent by the BS due to broken SCCP link.Measurement point: BS sends Reset CIC message.

QCELP 13K Assignments

Meaning: Number of times that the service option is configured as QCELP 13K. Measurement point: None.

QCELP 8K Assignments

Meaning: Number of times that the service option is configured as QCELP 8K. Measurement point: None.

EVRC Assignments

Meaning: Number of times that the service option is configured as EVRC. Measurement point: None.

QCELP 13K Assignment Failures

Meaning: Number of failures in configuring the service option as QCELP 13K. Measurement point: None.

QCELP 8K Assignment Failures

Meaning: Number of failures in configuring the service option as QCELP 8K. Measurement point: None.

EVRC Assignment Failures

Meaning: Number of failures in configuring the service option as EVRC.

Measurement point: None.

QCELP 13K Assignment Success Ratio

Meaning: QCELP 13K assignment success ratio.

QCELP13K Assignment Success Ratio=

100*(1-QCELP13K Assignment Failures/QCELP13K Assignments) Measurement point: Computed item.

QCELP 8K Assignment Success Ratio

Meaning: QCELP 8K assignment success ratio.

QCELP8K Assignment Success Ratio=

100*(1-QCELP 8K Assignment Failures/QCELP 8K Assignments) Measurement point: Computed item.

EVRC Assignment Success Ratio

Meaning: EVRC assignment success ratio.

EVRC Assignment Success Ratio=

100*(1-EVRC Assignment Failures/EVRC Assignments) Measurement point: Computed item.


MTP signaling link measurement provides various parameter measurements when the signaling link is in normal, faulty, or congested status and the measurement for signaling link to receive and send messages. It only includes one measurement unit.

Signaling Link

Signaling Link


Duration of Link in Service

Meaning: Duration for the signaling link in available status. The available status indicates that the transmission service is available. In a similar way, the unavailable status indicates the transmission service is unavailable. Measurement point: The start time is when the signaling link becomes available and the end time is when the signaling link becomes unavailable.

The unavailable status of signaling link includes the following conditions:

(1) Signaling link failure

(2) Processor failure

(3) Management inhibited

(4) Receive remote handoff command.

Duration of Signaling Link Unavailable (Any cause)

Meaning: Duration for the signaling link in unavailable status. Measurement point: The start time is when the signaling link becomes unavailable and the end time is when the signaling link becomes available.

Signaling Link Failures (All causes)

Meaning: Number of signaling link failures within a certain period. The signaling link failure indicates that signaling link at MTP-2 layer is interrupted. Measurement point: MTP-2 layer reports the interruption of signaling link.

Duration of Signaling Link Failure

Meaning: Duration for the signaling link in faulty status. Measurement point: The start time is when the MTP-2 layer reports the interruption of signaling link and the end time is when it reports the activation of signaling link service.

Local Management Inhibitings

Meaning: Number of signaling link management inhibits within a certain period. Measurement point: The BS inhibits signaling link management and receives management inhibit allowed message of peer BS.

Meaning: Duration for the signaling link in local management inhibited


Duration of Local Management Inhibiting

status. Measurement point: The start time is when local management of signaling link is successfully inhibited and the end time is when it is uninhibited.

Remote Management Inhibitings

Meaning: Number of times that signaling link is inhibited by remote management within a certain period. Measurement point: The local end receives the command of remote signaling link management inhibited and considers that the management can be inhibited, i.e., remote management is inhibited.

Duration of Remote Management Inhibiting

Meaning: Duration for the signaling link in remote management inhibited status. Measurement point: The start time is when remote management of signaling link is inhibited and the end time is when it is uninhibited.

Remote Processor Failures

Meaning: Number of remote processor failures for signaling link within a certain period. Measurement point: The signaling link receives remote processor failure message when it is not in the status of remote processor failure.

Duration of Remote Processor Failure

Meaning: Duration for the signaling link in remote processor failure status. Measurement point: The start time is when the signaling link, not in the remote processor failure status, receives remote processor failure message, and the end time is when the signaling link, in the status of remote processor failure, receives the handoff command from remote end, and FISU/MSU, or local signaling link failure message.

Local Automatic Switchovers

Meaning: Number of local signaling link handoffs within a certain period. Measurement point: The BS hands off signaling link to other links.

Message Signal Units Sent

Meaning: Number of MSUs sent by the BS within a certain period. Measure point: The BS sends a message to the peer BS.

SIF and SIO Octets Sent

Meaning: Number of SIF and SIO octets sent by the BSwithin a certain period. Measurement point: The BS sends the message to the remote end.

Message Signal Units Received

Meaning: Number of MSUs received within a certain period. Measure point: The BS receives a message from the remote end.

SIF and SIO Octets Received

Meaning: Number of SIF and SIO octets received within a certain period. Measurement point: The BS receives the message from the remote end.

Signaling Link Congestions

Meaning: Number of signaling link congestions within a certain period. Measurement points: Congestion occurs to the BS.

Duration of Signaling Link Congestion

Meaning: Duration of local signaling link congestion. Measurement point: The start time is when BS signaling link is congested and the end time is when BS signaling link congestion is removed.


PCF Call Processing Measurement

PCF Call Processing Measurement provides measurement of packet call activation, SDB transmission, and inter-PCF handoffs. It includes the following measurement units:

Packet Call Activation SDB Transmission Inter-PCF Handoffs

Packet Call Activation

MSUs Discarded due to Signaling Link Congestion

Meaning: Number of MSUs discarded due to BS signaling link congestion. Measurement point: Signaling link congestion occurs to the BS.

Signaling Link Transmitting Ratio

Meaning: The average sending load of signaling link within a certain period.

Signaling Link Transmitting Ratio=

100*(SIF and SIO Octets Sent+6*Message Signal Units (MSUs) Sent)/(491520*(Granularity Period)) Measurement point: Computed item.

Signaling Link Receiving Ratio

Meaning: The average receiving load of signaling link within a certain period.

Signaling Link Receiving Ratio=

100*(SIF and SIO Octets Received+6*Message Signal Units Received)/(491520*(Granularity Period)) Measurement point: Computed item.


MS Reactivate Attempts

Meaning: Number of call activation requests originated by the MS. Measurement point: PCF receives A9-Setup-A8 message in dormant status.

Successful MS Reactivations

Meaning: Number of successful call activations originated by the MS. Measurement point: PCF returns A9-Connect-A8 message to the BS after successfully processing A9-Setup-A8 in dormant status.

PCF Reactivate Attempts

Meaning: Number of call activation requests originated by the PCF. Measurement point: PCF sends A9-BS-Service-Request message to the BS in dormant status.

Successful PCF Reactivations

Meaning: Number of successful call activations originated by the PCF.

Measurement point: PCF returns A9-Connect-A8 message to the BS after successfully processing A9-Setup-A8 from the BS in dormant


SDB Transmission

Inter-PCF Handoffs

PCF Data Processing Measurement

PCF Data Processing Measurement provides measurement of PCF data flow, buffer area load, and packets discarded.

It includes the following measurement units:

PCF Data Flow PCF Buffer Area Load Measurement Packets Discarded by PCF

PCF data flow measurement is the measurement of the data sent to the MS by PDSN; PCF buffer area load measurement is the measurement of PCF buffer area overflows; PCF packet discarded measurement is the measurement of the packet discarding ratio of BPU.

PCF Data Flow

status.


MS Sends SDBMeaning: Number of times that MS Sends SDB.Measurement point: PCF sends Data-Burst message to the BS in dormant status.

PCF Sends SDBMeaning: Number of times that PCF Sends SDB. Measurement point: PCF sends A9-Short-Data-Delivery message to the BS in dormant status.


Incoming HOs to this PCF with MS Active

Meaning: Number of incoming HOs to this PCF with MS active. Measurement point: When the destination PCF receives A9-Setup-A8 message, the data, which is ready, indicates that DRS is 1 (HO is 1, too).

Outgoing HOs from this PCF with MS active

Meaning: Number of outgoing HOs to this PCF with MS active.

Measurement point: PCF receives A9-AL Disconnected in active status.

Incoming HOs to this PCF with MS Dormant

Meaning: Number of incoming HOs to this PCF with MS dormant. Measurement point: When the destination PCF receives A9-Setup-A8 message, the data, which is ready, indicates that DRS is 0 (HO is 0, too).

Measurement


PCF Buffer Area Load Measurement

Packets Discarded by PCF

BSC Data Processing Measurement

BSC Data Processing Measurement provides measurement of BSC uplink/downlink data flow and packets discarded by the BSC. It includes the following measurement units:

BSC Uplink Packet Data Flow BSC Downlink Packet Data Flow

item Meaning & measurement point

PCF Downlink Packets

Meaning: Number of downlink data packets received by PCF. Measurement point: The GRE packet is received from PDSN.

PCF Downlink Bytes

Meaning: Number of downlink data bytes received by PCF. (Unit: KB)Measurement point: The GRE packet is received from PDSN.

Average Size of PCF Downlink Packets

Meaning: Average size of downlink data packets received by PCF (Unit: byte/packet)

Average Size of Downlink Data Packets=

PCF Downlink Bytes/PCF Downlink Packets*1024 Measurement point: Computed item.

Average Flow of PCF Downlink Data

Meaning: Average flow of PCF downlink data (Unit: Kbit/s)

Average Flow of PCF Downlink Data=

8*PCF Downlink Bytes/(60*(Granularity Period)) Measurement point: Computed item.


PCF Buffer Area Overflows

Meaning: Number of PCF buffer area overflows. Measurement point: The occupancy of PCF buffer area exceeds the max.


Packets Discarded due to Buffer Area Overflow

Meaning: Number of packets discarded due to buffer area overflow. Measurement point: The buffer for the GRE packet newly received from PDSN is unavailable due to full buffer area.

Packets Discarded due to Sequencing Error

Meaning: Number of packets discarded due to sequencing errorMeasurement point: The GRE packet SN newly arrived is less than what is anticipated.


Buffer Area Load Measurement Packets Discarded by BSC

BSC Uplink Packet Data Flow

BSC Downlink Packet Data Flow


Uplink Packets Received by BSC

Meaning: Number of uplink data packets received by BSC. Measurement point: The data packet is received from RLP.

Uplink Bytes Received by BSC

Meaning: Number of uplink bytes received by BSC. Measurement point: The data packet is received from RLP.

Average Size of Uplink Data Packets Received by BSC

Meaning: Average size of uplink data packets. (Unit: byte/packet)

Average Size of Uplink Data Packets Received by BSC=

(Uplink Bytes Received by BSC/Uplink Packets Received by BSC) *1024 Measurement point: Computed item.

Average Flow of BSC Uplink Data

Meaning: Average flow of uplink data. (Unit: Kbit/s)

Average Flow of BSC Uplink Data=

8*Uplink Bytes Received by BSC/(60*(Granularity Period)) Measurement point: Computed item.


Downlink Packets Received by BSC

Meaning: Number of uplink data packets received by BSC. Measurement point: The GRE packet is received from PCF.

Downlink Bytes Received by BSC

Meaning: Number of downlink data bytes received by BSC. Measurement point: The GRE packet is received from PCF.

Average Size of Downlink Data Packets Received by BSC

Meaning: Average size of downlink data packet. (Unit: byte/packet)

Average Size of Downlink Data Packets Received by BSC=

(Downlink Bytes Received by BSC/Downlink Packets Received by BSC) *1024 Measurement point: Computed item.

Average Flow of BSC Downlink Data

Meaning: Average flow of uplink data. (Unit: Kbit/s)

Average Flow of BSC Downlink Data=


Buffer Area Load Measurement

Packets Discarded by BSC

CSPU CPU Occupancy Measurement

CSPU CPU Occupancy Measurement provides measurement of CSPU occupancy. It includes only one measurement unit:

CSPU CPU Occupancy

CSPU CPU Occupancy

Flow Chart

The flow charts referred to in the description of measurement items.

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Figure 01 MTC Flow (CS)

8*Downlink Bytes Received by BSC/(60*(Granularity Period)) Measurement point: Computed item.


BSC Downlink Buffer Area Overflows

Meaning: Number of BSC downlink buffer area overflows. Measurement point: The occupancy of CPPU buffer area exceeds the max.


Packets Discarded due to Downlink Buffer Area Overflow

Meaning: Number of packets discarded due to downlink buffer area overflow. Measurement point: The buffer for the GRE packet newly received from PCF becomes unavailable due to full buffer area.


CSPU CPU Occupancy

Measurement: CSPU CPU occupancy. Measurement point: The measurement is performed by VOS, the setting is completed in the foreground, and the average value is obtained from the BAM.


Figure 02 MTC Flow (PS)


Figure 03 MOC Flow (CS)


Figure 04 MOC Flow (PS)


Figure 05 MS Location Update Flow (CREF Mode)


Figure 06 MS Location Update Flow (DT1 Mode)

Figure 07 MT/PP Short Message (1)

Figure 08 MT/PP Short Message (2)


Figure 09 MO/PP Short Message

Figure 10 Broadcast Short Message


Figure 11 TCH Downlink Short Message

Figure 12 TCH Uplink Short Message

Figure 13 Intra-BS Soft HO Flow


Figure 14 Inter-BS Soft HO Adding Branch Flow


Figure 15 Inter-BS Soft HO Branch Deleting Flow


Figure 16 Intra-SP Hard HO (Within Same BS) Flow


Figure 17 Inter-SP Hard HO (Within Same BS) & Inter-BS Hard HO Flow


Figure 18 Link Information Measurement Point

Figure 19 Carrier Load Measurement Point


Figure 20 MS Sends SDB

Figure 21 PCF Sends SDB


Figure 22 Inter-PCF ACTIVE Handoff


Figure 23 Inter-PCF DORMANT Handoff


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