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KPI's and Counters for GPRS
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GGSN 1. KPI for GGSN Mobility
No KPI Registered
Accessibility Level A
Maximum PDP context activation vs Maximum PDP context in the platform Formula (Max users with act PDP context/ Maximum PDP Context in the platform) * 100% Description The maximum requests of PDP context activation received by the GGSN
PDP context act success ratio:
Formula (PDP context act success / PDP context act) * 100% Description
Congestion duration Formula Congestion duration Description
Level B
Fecha:
Authentication success ratio Formula ( Authentication request success / Authentication request ) * 100% Description
DHCP allocation success ratio Formula ( DHCP address allocation success / Received DHCP address allocation request ) * 100% Description
PDP context act fail Formula PDP context act fail Description
2G MS PDP context active failed by no resource Formula 2G MS PDP context active failed by no resource Description
PDP context act fail by auth failed Formula 2G MS PDP context active failed by auth failed Description
PDP context act fail by system fault Formula 2G MS PDP context active failed by system fault Description
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KPI's and Counters for GPRS
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2G PDP ctx act fail (other reason) Formula 2G MS PDP context active failed by other reason Description
Retainability Level A
PDP context deact success ratio Formula (PDP context deact success / PDP context deact ) * 100% Description
Level B
Usage Level A PDP usage ratio: Fomula PDP usage ratio Description
PDP context num Formula PDP context num Description PDP contexts which are in active status in the GGSN
Average CPU occupation ratio Formula Average CPU occupantion ratio Description Average CPU occupation ratio
PDP context act duration: Formula PDP context act duration Description PDP context activation time initiated by MS
Gi Peak Throughput in Mb/s Formula Gi Peak Throughput in Mbytes/s Description Peak Gi uplink byte forwarding rate during a period
Level B
Fecha:
Gi Peak Packet Throughput (pps) Formula Gi Peak packet Throughput Description Peak packet Gi link forwarding rate during a period
Device Uplink transport success ratio Formula Device uplink transport success ratio Description
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KPI's and Counters for GPRS
Device Downlink transport success ratio Formula Device downlink transport success ratio Description
Gn Peak Throughput in Mb/s Formula Gn Peak Throughput in Mbytes/s Description Peak Gn uplink byte forwarding rate during a period
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Level C
Gn Peak Packet Throughput Formula Gn Peak packet Throughput (pps) Description Peak Gn packet forwarding rate during a period
2. Counters for GGSN
Fecha:
Basic session service measurement GGSN Received Packets: Packets received by GGSN GGSN Received Error Packets: Error packets received by GGSN GGSN Sent Packets: Packets sent by GGSN GTP-C peer restart times: Statistics of peer restarting times GTP-C path down times: Statistics of GGSN GTP signaling path broken times PDP context act duration: PDP context activation time initiated by MS PDP context num: PDP contexts which are in active status in the GGSN PDP context act: Attempts of PDP context activation request received by GGSN PDP context act success: Successful times of PDP context activation by GGSN Average act PDP context: Average PDP contexts activated by GGSN Max users with act PDP context: The maximum number of PDP context activated by GGSN PDP context deact: Attemps of PDP context deactivations request received by GGSN PDP context deact success: Successful times of PDP context deactivation by GGSN PDP context act fail: Failed times of PDP context activation by GGSN PDP Context num: PDP context which are in activated status in GGSN system PDP usage ratio: (Current PDP context in GGSN system / PDP context which the lincense permit) Congestion duration: Congestion duration of GGSN
Transport performance measurement Gn Uplink in MB: Uplink forwarding bytes on Gn interface in statistical period Gn Uplink packets: Uplink forwarding packets on Gn interface in statistical period Gn Downlink in MB: Downlink forwarding bytes on Gn interface in statistical period Gn Downlink packets: Downlink forwarding packets on Gn interface in statistical period Gi Uplink in MB: Uplink forwarding bytes on Gi interface in statistical period Gi Uplink packets: Uplink forwarding packets on Gi interface in statistical period Gi Downlink in MB: Downlink forwarding bytes on Gi interface in statistical period Gi Downlink packets: Downlink forwarding packets on Gi interface in statistical period Gn Peak Throughput in Mbytes/s: Peak Gn byte forwarding rate during a period Gi Peak Throughput in Mbytes/s: Peak Gi byte forwarding rate during a period Gn Peak packet Throughput (pps): Peak Gn packet forwarding rate during a period Gi Peak packet Throughput (pps): Peak Gi packet forwarding rate during a period Device uplink transport success ratio: (Gi uplink packets / Gn uplink packets)*100 Device downlink transport success ratio: (Gn downlink packets / Gi downlink packets)*100
G-CDR Bill Statistics CDR's create success: Total bills that are created successfully CDR's create fault: Total bills that are created unsuccessfully Elaborado por: Enrique Torres
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GTP Performance measurement CG communication fault: Broken times of communication between GC and GGSN GC redirection fault: Failed times of redirection Num of CDR's sent to CG: Total number of bills that are sent to the GC
AAA Performance measurement Authentication request success: Successful times of authentication request sent from GGSN to AAA server Authentication request: Number of authentication request sent from GGSN to AAA Accounting start success: Successful times of accounting start request sent from GGSN to AAA server Accounting start request: Attemps of accounting start request sent from GGSN to AAA server Accounting stop success: Successful times of accounting stop request sent from GGSN to AAA server Accounting stop request: Attemps of accounting stop request sent from GGSN to AAA server
DHCP performance measurement Received DHCP address allocation request: Requests of DHCP allocations received from the user DHCP address allocation success: Number of successful DHCP allocations
System performance measurement Average CPU occupantion ratio: Average value of the board CPU occupation ratio Average memory utilization ratio: Average value of board memory occupation ratio
Fecha:
KPI's and Counters for GPRS
APN Session Measurement 2G MS activate session request: Attemps of PDP context activations initiated by MS 2G MS activate session succeed: Successful times of PDP context activation initiated by MS 2G MS act PDP context success ratio: Successful rate of PDP context activation 2G MS deactivate session request: Attemps of PDP context activations initiated by MS 2G MS deactivate session succeed: Successful times of PDP context activation initiated by MS 2G GGSN deactivate session request: Attemps of PDP context activations initiated by GGSN 2G GGSN deactivate session succeed: Successful times of PDP context activation initiated by GGSN 2G MS PDP context active failed by no resource: MS PDP context activation failed times caused by no resource 2G MS PDP context active failed by system fault: MS PDP context activation failed times caused by system fault 2G MS PDP context active failed by auth failed: MS PDP context activation failed times caused by auth failed 2G MS PDP context active failed by other reason: MS PDP context activation failed times caused by other reason
APN Status statistics Active PDP context: Activated PDP contexts in GGSN by an APN Max active PDP context by APN: Maximun activated PDP contexts in GGSN by an APN
User's bill measurement CDR's create success: Number of a specific user's bills that are created successfully CDR's create fault: Number of a specific user's bills that are created unsuccessfully
APN AAA performance measurement Authentication request success ratio: successful rate of access request sent to GGSN Accounting start success: Successful times that accounting start request is sent to AAA server Accounting start request: Times that an accounting start is sent to AAA server Accounting stop success: Successful times that accounting stop request is sent to AAA server Accounting stop request: Times that an accounting stop is sent to AAA server
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KPI's and Counters for GPRS
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APN Transport performance measurement APN Gn Uplink in MB: Uplink forwarding bytes on APN Gn Interface APN Gn Uplink packets: Uplink forwarding packets on APN Gn interface APN Gn Downlink in MB: Downlink forwarding bytes on APN Gn Interface APN Gn Downlink packets: Downlink forwarding packets on APN Gn interface APN Gi Uplink in MB: Uplink forwarding bytes on APN Gi Interface APN Gi Uplink packets: Uplink forwarding packets on APN Gi interface APN Gi Downlink in MB: Downlink forwarding bytes on APN Gi Interface APN Gi Downlink packets: Downlink forwarding packets on APN Gi interface APN Average packet throughput (pps): Average forwarding rate of both APN Gn and APN Gi interfaces APN Peak packet throughput (pps): The maximum value of forwarding rate of both APN Gn and APN Gi interfaces
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KPI's and Counters for GPRS
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SGSN 3. KPI for SGSN Mobility Level A
Ratio of successful intra-SGSN RAU Formula (2G intra RAU success times / 2G intra-SGSN RAU request times) * 100 Description
Accessibility Level A
Attach ratio Formula (Attached users / total GSM users in the VLR) * 100% Description
Attach users vs Maximum attached users in the platform Formula (Attached users / Maximum attached users in the platform) * 100% Description
Ratio of successful attach Formula (2G GPRS attach accept times / 2G GPRS attach request times) * 100 Description
MS-initiated ctx activation user ratio: Formula ( 2G MS init PDP ctx act success / 2G MS init PDP ctx act) * 100% Description
Network-initiated ctx activation user ratio: Formula ( 2G Network init PDP ctx act success / 2G Network init PDP ctx act ) * 100% Description
Level B
Fecha:
Ratio of successful attach of Foreign subscribers Formula (2G attach accept sent to foreign subscribers / 2G attach request received from foreigh subscribers) * 100 Description
Ratio of successful authentication Formula (2G authentication success times / 2G authentication request times) * 100 Description
Ratio of successful identity Formula (2G identity success times / 2G identity request times) * 100 Description
Number of fails to activate a secondary PDP Formula 2G PDP ctx sec act reject Description Elaborado por: Enrique Torres
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Ratio of Foreign subscribers ctx act fail Formula (2G foreign subscribers act PDP ctx reject / 2G foreign subscribers act PDP ctx request) * 100 Description
Retainability Level A
Ratio of attachments refused when local update is initiated Formula (Location update refused times / HPLMN user location update times) * 100 Description
Usage Level A
2G average PDP act duration Formula 2G average PDP act duration Description
Average users at STANDBY status Formula Average users at STANDBY status Description
2G average attached users Formula 2G average attached users Description
2G average attach duration Formula 2G average attach duration Description
CPU overload duration Formula CPU overload duration Description Duration of times the CPU occupancy is over 85%
CPU congestion duration Formula CPU congestion duration Description Duration of times the CPU occupancy is over 95%
Ratio of available channel to bear services Formula ((Valid channel number ) / (Valid channel number + Invalid channel number)) * 100 Description
MTP link durations of congestion Formula MTP link durations of congestion Description
Fecha:
Sent Throughput per act PDP ctx connection Formula (Gn mean sent througput (kbps)) / (2G MS init PDP ctx act success + 2G Network init PDP ctx act success ) Description Elaborado por: Enrique Torres
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Receive Throughput per act PDP ctx connection
Formula (Gn mean receive througput (kbps)) / (2G MS init PDP ctx act success + 2G Network init PDP ctx act success ) Description
Level B MTP in service ratio
Formula ((MTP link duration in service) / (MTP link duration in service + MTP link duration of unavailable)) * 100% Description
NO.7 average link send load every link (erl) Formula NO.7 average link send load every link (erl) Description
NO.7 average link received load every link (erl) Formula NO.7 average link received load every link (erl) Description
Ratio of successful ciphering Formula (2G security mode control request times / 2G authentication request times) * 100 Description
DNS success response Ratio Formula (Success response from DNS server / Resolving request DNS server) * 100 Description
Sent Throughput per READY user Formula (Gn mean sent througput (kbps)) / (Users at READY status ) Description
Receive Throughput per READY user Formula (Gn mean receive througput (kbps)) / (Users at READY status) Description
Level C
Fecha:
Gn mean sent througput (kbps) Formula Gn mean sent througput (kbps) Description
Gn mean received throughput (kbps) Formula Gn mean received throughput (kbps) Description
Gn peak sent throughput (kbps) Formula Gn peak sent throughput (kbps) Description
Gn peak received throughput (kbps) Formula Gn peak received throughput (kbps) Description
Gn mean received packets (pkts/sg) Elaborado por: Enrique Torres
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Formula Gn mean received packets (pkts/sg) Description
Gn mean sent packets (pkts/sg) Formula Gn mean sent packets (pkts/sg) Description
Gn peak received packets (pkts/sg) Formula Gn peak received packets (pkts/sg) Description
Gn peak sent packets (pkts/sg) Formula Gn peak sent packets (pkts/sg) Description
MTP link send load: Formula MTP link send load Description
MTP link receive load: Formula MTP link receive load Description
4. Counters for SGSN Measurement Set: Basic SM 2G measuremnt 2G PDP context activation measuremnt 2G MS init PDP ctx act: Number of request of MS-initiated PDP context activation using static or dynamic PDP context. 2G MS init PDP ctx act success: Number of success of MS-initiated PDP context activation 2G Network init PDP ctx act: Number of request of Network-initiated PDP context activation using static or dynamic PDP context. 2G Network init PDP ctx act success: Number of success of Network-initiated PDP context activation 2G PDP ctx act reject: Number of PDP context activation failures. 2G PDP ctx act fail (QoS negotiation fail): Context activation fail due QoS negotiation fail 2G PDP ctx act fail (rejected by GGSN): Context activation fail due Rejected by GGSN 2G PDP ctx act fail (insufficient network resources): Context activation fail due insufficiente network resources 2G PDP ctx act fail (DNS resolution fail): Context activation fail due DNS resolution fail 2G PDP ctx act fail (Missing or unknow APN): Context activation fail due missing or unknow APN 2G PDP ctx act fail (Unknow PDP addr or PDP type): Context activation fail due unknow PDP addr or PDP type 2G PDP ctx act fail (user authentication fail): Context activation fail due user authentication fail 2G PDP ctx act fail (service unsupported): Context activation fail due service unsupported 2G PDP ctx act fail (service unsubscribed): Context activation fail due service unsubscribed 2G PDP ctx act fail (Ge fail): Context activation fail due Ge fail 2G PDP ctx act fail (UGBI PDP Conjestion): Context activation fail due UGBI PDP Conjestion Fecha:
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2G PDP ctx act fail (Operator Determined Barring): Context activation fail due Operator Determined Barring 2G PDP ctx act fail (unspecified reason): Context activation fail due unspecified reason 2G PDP ctx sec act reject: Number of fails to activate a secondary PDP 2G average users with act PDP ctx: arithmetical mean of user with PDP context activated 2G max users with act PDP ctx: maximum number of users with PDP context activated 2G secondary PDP ctx act: Request of activate a secondary PDP context 2G foreign subscribers act PDP ctx request: Request to activate a PDP context by foreign subscribers 2G foreign subscribers act PDP ctx reject: Request to activate a PDP context by foreign subscribers that were rejected 2G ave act PDP sessions (interactive): Mean number of active PDP context for QoS Class Interactive 2G ave act PDP sessions (conversation): Mean number of active PDP context for QoS Class conversation 2G ave act PDP sessions (streaming): Mean number of active PDP context for QoS Class streaming 2G ave act PDP sessions (background): Mean number of active PDP context for QoS Class background
2G SM resource PM 2G average PDP act duration: mean activation duration of PDP context Measurement Set: Basic MM measuremnt 2G L3 MM of foreign MS measurement 2G attach request received from foreigh subscribers: Attach request with the SGSN initiated by roaming subscribers. 2G attach accept sent to foreign subscribers: Number of successful attach from roaming users. 2G RAU received from foreign subscribers: “Routing area update request” received from foreign subscriber. 2G RAU accept sent to foreign subscribers: “Routing area update accept” sent to foreign subscriber. 2G attach procedure measurement 2G GPRS attach request times: Number of GPRS attach request with SGSN. 2G GPRS attach accept times: Number of GPRS attach success with the SGSN. 2G GPRS attach reject times (illegal MS): Number of attach reject due illegal MS 2G GPRS attach reject times (LA not allowed): Number of attach reject due “Location area not allowed” 2G GPRS attach reject times (roaming not allowed in LA): Number of attach reject due roaming not allowed in location area. 2G GPRS attach reject times (illegal ME): Number of attach reject due illegal ME 2G GPRS attach reject times (GPRS service not allowed): Number of attach reject due GPRS service not allowed 2G GPRS attach reject times (protocol error): Number of attach reject due protocol error (unspecified) 2G GPRS attach reject times (Gr Fail): Number of attach reject due Gr protocol error (unspecifed) 2G GPRS attach reject times (Ge Fail): Number of attach reject due Ge protocol error (unspecifed) 2G GPRS attach reject times (GPRS not allowed in PLMN): Number of attach reject due GPRS is not allowed in the PLMN 2G GPRS attach reject times (Not suitable cells in LA): Number of attach reject due no suitable cells in LA. 2G detach procedure measurement 2G MS-init GPRS detach request times: Number of MS-initiated request for GPRS detach 2G SGSN-init GPRS detach request times: Number of SGSN-initiated request for GPRS detach 2G HLR-init GPRS detach request times: Number of HLR-initiated request for GPRS detach Fecha:
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2G intra-SGSN RAU PM 2G intra-SGSN RAU request times: Number of intra SGSN RAU request 2G intra RAU success times: Number of successfull SGSN RAU 2G intra Com-RAU request times: Number of intra-SGSN combined RA/LA update requests 2G intra succcessful times of Com-RAU: Number of successful combined intra SGSN RAU updates Security measurement 2G Security measurement 2G authentication request times: Number of authentications started with SGSN 2G authentication success times: Number of successful authentications with SGSN 2G identity request times: Number of request identity started with SGSN 2G identity success times: Number of successful identification process with SGSN 2G security mode control request times: Number of request for ciphering mode control initiated with SGSN 2G authentication request times: Number of successful ciphering mode control initiated with SGSN Radio resource measurement 2G System user measurement Users at STANDBY status: Number of users in STANDBY status (in real time). Average users at STANDBY status: Average number of users in STANDBY status Max users at STANDBY status: Maximum number of users in STANDBY status Users at READY status: Number of users in READY status (in real time). Average users at READY status: Average number of users in READY status Max users at READY status: Maximum number of users in READY status 2G attached users: Number of attached users (in real time) 2G average attached users: Average number of attached users 2G max attached users: Maximum number of attached users MM resource measurement 2G average attach duration: Mean attach duration of 2G users. GTP control measurement SGSN DNS request PM Resolving request DNS server: Number of resolution request the SGSN deliver to the DNS Success response from DNS server: Number of correct responses that SGSN receive from DNS Data packets transfer measurement GTP-U data packet transfer PM 2G uplink packets: Number of 2G uplink packets forwarded successful from GTP 2G downlink packets: Number of 2G downlink packets forwarded successful from GTP 2G uplink kbytes: Number of 2G uplink Kbytes forwarded from GTP 2G downlink kbytes: Number of 2G downlink Kbytes forwarded from GTP Gn sent Kbyte: Number of Kbytes of GTP packets sent to GGSN Gn received Kbyte: Number of Kbytes of GTP packets received from GGSN Gn mean sent througput (kbps): Mean sent throughput over Gn interface Gn mean received throughput (kbps): Mean received througput over Gn interface Gn peak sent throughput (kbps): Peak sent throughput over Gn interface Gn peak received throughput (kbps): Peak received througput over Gn interface Gn mean received packets (pkts/sg): Mean of packets per second processed by SGSN Gn mean sent packets (pkts/sg): Mean of packets per second processed by SGSN Gn peak received packets (pkts/sg): Peak of packets per second processed by SGSN Gn peak sent packets (pkts/sg): Peak of packets per second processed by SGSN Gn uplink data packets dropped: Number of Gn uplink data packets dropped Gn downlink data packets dropped: Number of Gn downlink data packets dropped
Fecha:
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KPI's and Counters for GPRS
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System load measurement System load PM Average CPU occupation ratio: CPU occupancy ratio CPU overload times: Number of times the CPU occupancy ratio exceeds 85% CPU overload duration: Duration of times the CPU occupancy is over 85% CPU congestion times: Number of times the CPU occupancy ratio exceeds 95% CPU congestion duration: Duration of times the CPU occupancy is over 95% NO.7 measurement MAP bassic traffic PM HPLMN user location update times: Provides the number of times SGSN initiates location update to HLR Location update refused times: Provide the number of times HLR returns the message that the user attachment is rejected when location update is initiated. Gr signaling link PM NO.7 link send load (erl): Sending signaling load over NO.7 interface NO.7 link receive load (erl): Received signaling load over NO.7 interface NO.7 average link send load every link (erl): Average sending signaling load over NO.7 interface NO.7 average link received load every link (erl): Average received signaling load over NO.7 interface Gb procedure measurement SNDCP PM Average PDP ctx using protocol compression: Number of protocol compression entities used by MS at the end of measured period Average PDP ctx using data compression: Number of data compression entities used by MS at the end of measured period Gb resource PM E1 in service: Number of E1's configured for Gb interface Valid channel number: Number of BC available to bear services Invalid channel number: Number of BC unavailable to bear services Normal cell number: Number of cells that can bear services Abnormal cell number: Number of cells that can not bear services Gb link in service: Number of NSVCs that can bear services Gb link unavailable: Number of NSVCs that can not bear services Ga interface PM Ga interface PM SGSN and CG communication interruption times: Number of times of communication interruption between SGSN and CG CDRs sent to CG: Number of CDR sent to CG Max CDRs per second sent to CG: Maximum number of CDRs por second sent to CG CDR data transfer success Num: Number of success in transmitting CDRs to th CG MTP link measurement MTP signaling link PM MTP link duration in service: Provides the duration in service of signalling link MTP link duration of unavailable: Provides the duration out of service of signalling link MTP link fault times: Number of times that the signalling link is in the status SIOS (service interrupted status) MTP link duration fault: Provides the time of signalling link cannot transmit MTP link send load: The measure provides the occupantion percentage of the information sent from the signaling link with the unit time. MTP link receive load: The measure provides the occupantion percentage of the information received by the signaling link with the unit time. MTP link congestion: Number of times of congestion of signaling link MTP link durations of congestion: Provides the duration of link congestion
Fecha:
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GB measurement (BSSID specified) GB measurement (BSSID speciffic) SGSN Gb Mean sent throughput (bps): Throughput sent to BSS SGSN Gb Mean received throughput (bps): Throughput received from BSS SGSN Gb Peak sent throughput (bps): Peak throughput sent to BSS SGSN Gb Peak received throughput (bps): Peak throughput received from BSS Performance measurement of attach procedures within a BSS (2G) 2G attach procedure measurement (BSSID speciffic) 2G GPRS attach request times: Provide the numnber of GPRS attach request. 2G GPRS attach accept times: Provide the number of GPRS attachment success Performance measurement of PDP context activation procedures with a BSS (2G) 2G PDP context activation measurement (BSSID speciffic) 2G MS init PDP ctx act: Number of request of MS-initiated PDP context activation using static or dynamic PDP context. 2G MS init PDP ctx act success: Number of success of MS-initiated PDP context activation 2G Network init PDP ctx act: Number of request of Network-initiated PDP context activation using static or dynamic PDP context. 2G Network init PDP ctx act success: Number of success of Network-initiated PDP context activation Specific BSS resources measurement 2G User number PM per BSS 2G attached user number per BSS: Number of users attached in a specific BSS 2G activated PDP number per BSS: Number of users with PDP context active in a speciffic BSS APN SM course PM APN SM course PM 2G max act PDP context by APN: Maximum number of PDP context active using specific APN 2G average act PDP context by APN: Average number of PDP context active using specific APN UHPU user plane measurement (APN specified) UHPU user plane measurement (APN specific) Average throughput of UL based on specific APN (Kbps): Average throughput of uplink in specific APN Average throughput of DL based on specific APN (Kbps): Average throughput of downlink in specific APN Peak throughput of UL based on specific APN (Kbps): Peak throughput of uplink in specific APN Peak throughput of DL based on specific APN (Kbps): Peak throughput of downlink in specific APN
Fecha:
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PCU 5. KPI for CPU Mobility Level A
Paging Load Formula (Number of packet paging request sent: + Number of circuit paging request sent) Description Paging load with BSC
Accessibility Level A
Ratio of dynamic PDCH request Formula (Number of successful conversion from TCH to PDTCH) / (Number of attempts of converting TCH to PDTCH) Description Ration of dynamic PDCH request
Ratio of successful uplink TBF establishment Formula (Number of successful uplink TBF establisment / Number of uplink TBF establishment attempts) Description Qos of GPRS BSS in uplink. If the value is low could be problems in insuficient radio channel resource or fault in radio channel.
Ratio of successful downlink TBF establishment Formula (Number of successful downlink TBF establisment / Number of downlink TBF establishment attempts) Description Qos of GPRS BSS in downlink. If the value is low could be problems in insuficient radio channel resource or fault in radio channel.
Level B
Fecha:
Ratio of successful uplink assignment Formula ((Number of successful uplink assignments)/(Number of uplink assignments))* 100% Description Reflect GPRS QoS of Cell, if the number is low some problem is on radio enviroment, network paramenter configuration, network resource or network equipment
Ratio of successful uplink inmediate assignment Formula ((Number of successful uplink inmediate assignments)/(Number of uplink inmediate assignments))* 100% Description Reflect GPRS QoS of Cell, if the number is low some problem is on radio enviroment, network paramenter configuration, network resource or network equipment
Ratio of successful uplink assignment on PACCH Formula ((Number of successful uplink assignment on PACH)/(Number of uplink assignment on PACH))* 100% Description Reflect GPRS QoS of Cell, if the number is low some problem is on radio enviroment, network paramenter configuration, network resource or network equipment
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Ratio of successful downlink assignment Formula ((Number of successful downlink assignments)/(Number of downlink assignments))* 100% Description Reflect GPRS QoS of Cell, if the number is low some problem is on radio enviroment, network paramenter configuration, network resource or network equipment
Ratio of successful downlink inmediate assignment Formula ((Number of successful downlink inmediate assignments)/(Number of downlink inmediate assignments))* 100% Description Reflect GPRS QoS of Cell, if the number is low some problem is on radio enviroment, network paramenter configuration, network resource or network equipment
Ratio of successful downlink assignment on PACCH Formula ((Number of successful downlink assignment on PACH)/(Number of downlink assignment on PACH))* 100% Description Reflect GPRS QoS of Cell, if the number is low some problem is on radio enviroment, network paramenter configuration, network resource or network equipment
Retainability Level A
Number of downlink TBF normal release Formula none Description Number of downlink control acknowledgement message for ending TBF received by PCU from MS. If the value is too low could be considered that the radio enviroment, network parameter configuration and network resource of the cell must be optimized.
Number of uplink TBF normal release Formula none Description Number of uplink control acknowledgement message for ending TBF received by PCU from MS. If the value is too low could be considered that the radio enviroment, network parameter configuration and network resource of the cell must be optimized.
Ratio of downlink TBF dropped Formula (Number of downlink TBF abnormal release due to N3105 overflow) / (Number of successful downlink TBF establisment) * 100% Description If the value is higher than 8% check the link quality incluiding interference, Abis and G-Abis
Usage Level A
Fecha:
Uplink throughput on LLC level per active PDP context Formula (Uplink Throughput (Kbits/seg))/(2G average users with act PDP ctx) Description Number of occupied PDCHs in N measurement times
Downlink throughput on LLC level per active PDP context Formula (Downlink Throughput (Kbits/seg))/(2G average users with act PDP ctx) Description Number of occupied PDCHs in N measurement times
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KPI's and Counters for GPRS
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Max number of occupied PDCHs Formula none Description Number of occupied PDCHs in N measurement times
Load of GPRS BSS by TBF Formula (Number of uplink TBF establishment attempts + Number of Downlink TBF establishment attempts) Description Traffic load model with BSC
Number of PDCH channels occuppied for downlink transmission Formula none Description Measure the average number of PDCH channels in a cell that are occupied for downlink data transmision for one measuring period. The PDCH channel occuppied for downlink transmission refers to the currently used PDCH channel with the downlink TBF.
Number of PDCH channels occuppied for uplink transmission Formula none Description Measure the average number of PDCH channels in a cell that are occupied for uplink data transmision for one measuring period. The PDCH channel occuppied for uplink transmission refers to the currently used PDCH channel with the downlink TBF.
Uplink PDTCH/PACCH utilization rate (%) Formula (Number of block sent on Uplink PDTCH/PACCH / Number of block scheduled on Uplink PDCH) Description Measure the channel utilization ratio of the uplink PDTCH/PACCH.
Downlink PDTCH/PACCH utilization rate (%) Formula (Number of block sent on Downlink PDTCH/PACCH / Number of block scheduled on Downlink PDCH) Description Measure the channel utilization ratio of the downlink PDTCH/PACCH.
Cell mean PDCH bearer rate (%) Formula none Description Measure the channel utilization ratio of the downlink PDTCH/PACCH.
Ratio of downlink TBF congestion Formula (Number of downlink TBF establishment failures due to no channel + Number of downlink TBF abnormal release due to no channel) / (Number of downlink TBF establishment attempts) * 100% Description If the value is higher than 10% check the capacity over the air
Ratio of Discarded NS PDU of Gb Interface Formula (Number of NS PDUs discarded by NS sublayer) / (Number of NS PDUs discarded by NS sublayer + Number of NS PDUs received by NS sublayer + Number of NS PDUs sent by NS sublayer) Description Insuficiente bandwith in Gb interface or problems with this interface
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KPI's and Counters for GPRS
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Level B
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Mean number of available PDCHs Formula none Description Number of available PDCHs in N measurement times
Ratio of available PDCH Formula (Mean number of available PDCH) / (Mean number of available PDCH + Mean number of occupied PDCH) Description Ratio of available PDCH
Ratio of normal burst frames received Formula (Number of normal burst frames received)/(Number of normal burst received + Number of Out-ofSynchronization frames received + Number of check error frames received) Description Reflect the performance of G-Abis interface
Ratio of Out-of-Syncronization frames received: Formula (Number of Out-of-Synchronization frames received)/(Number of normal burst received + Number of Outof-Synchronization frames received + Number of check error frames received) Description Reflect the performance of G-Abis interface
Ratio of check error frames received: Formula (Number of check error frames received)/(Number of normal burst received + Number of Out-ofSynchronization frames received + Number of check error frames received) Description Reflect the performance of G-Abis interface
Ratio of valid TRAU frames sent: Formula (Number of valid TRAU frames sent)/(Number of valid TRAU frames sent + Number of empty TRAU frames sent) Description Reflect the performance of G-Abis interface
Ratio of empty TRAU frames sent: Formula (Number of empty TRAU frames sent)/(Number of valid TRAU frames sent + Number of empty TRAU frames sent) Description Reflect the performance of G-Abis interface
Number of RLC data blocks in use on PDCH Formula none Description Measure the number of RLC/MAC block transmitted on uplink/downlink TBF. If the statistic result is higher than traffic model is recommended make an expansion.
Number of RLC data blocks in use on PDCH Formula none Description Measure the number of RLC/MAC block transmitted on uplink/downlink TBF. If the statistic result is higher than traffic model is recommended make an expansion.
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KPI's and Counters for GPRS
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Number of RLC data blocks in use on PDCH Formula none Description Measure the number of RLC/MAC block transmitted on uplink/downlink TBF. If the statistic result is higher than traffic model is recommended make an expansion.
Level C
Fecha:
Mean occupied duration of all available PDCH Formula none Description The measured value indicates the duration when all the available PDCH are occuppied. The start time is the time that the last free PDCH is occuppied and the end time is the time that any occuppied PDCH is released its last TBF.
Load of NS sub-layer Formula (Number of NS PDUs sent by NS sublayer: Number of NS PDU sent + Number of NS PDUs discarded by NS sublayer + Number of NS PDUs received by NS sublayer) Description Load of NS sub layer
Number of RESET messages sent by NS sublayer to peer end Formula none Description Number of RESET messages sent from the local end to SGSN for NSVC resetting during one measurement period. If value is high could be by posible physical fault or data configuration error on the Gb interface or the NSVC configuration of PCU may be inconsistent with that of SGSN
Number of RESET messages received by NS sublayer to peer end Formula none Description Number of RESET messages received from the local end to SGSN for NSVC resetting during one measurement period. If value is high could be by posible physical fault or data configuration error on the Gb interface or the NSVC configuration of PCU may be inconsistent with that of SGSN
Status of Sent RESET messages on NS sublayer to peer end Formula (Number of RESET messages sent by NS sublayer to peer end - Number of RESET ACK messages sent by NS sublayer to peer end) Description The result must be cero (0) if not check the link state of Gb interface and related data configuration.
Status of Received RESET messages on NS sublayer from peer end Formula (Number of RESET messages received by NS sublayer to peer end - Number of RESET ACK messages received by NS sublayer from peer end) Description The result must be cero (0) if not check the link state of Gb interface and related data configuration.
Number of BLOCK messages sent by NS sub-layer to peer end Formula none Description Produced by posible physical link fault on Gb interface, data configuration error, NSVC blocking initiated by the OM or NSVC data configuration inconsistency between the PCU and SGSN
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KPI's and Counters for GPRS
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Number of BLOCK messages received by NS sub-layer to peer end Formula none Description Produced by posible physical link fault on Gb interface, data configuration error, NSVC blocking initiated by the OM or NSVC data configuration inconsistency between the PCU and SGSN
Status of Sent BLOCK messages on NS sublayer from peer end Formula (Number of BLOCK messages sent by NS sub-layer to peer end - Number of BLOCK ACK messages sent by NS sublayer from peer end) Description The result must be cero (0) if not check NSVC data configuration of PCU because is inconsistent with that on SGSN
Status of Received BLOCK messages on NS sublayer from peer end Formula (Status of Received BLOCK messages on NS sublayer from peer end - Number of BLOCK ACK messages received by NS sublayer from peer end) Description The result must be cero (0) if not check NSVC data configuration of PCU because is inconsistent with that on SGSN
6. Counters for PCU
CPU Performance Measurement Average CPU occupancy: No idle CPU in a sampling period Maximum CPU occupancy: Maximum CPU occupancy in a sampling period
BSC Overall Performance Measurement Total bytes of Uplink LLC_PDU sent: Amount of bytes of all LLC_PDU sent from PCU to Gb Interface Total number of Uplink LLC_PDU sent: Number of Uplink LLC_PDU sent Total bytes of Downlink LLC_PDU received: Amount of bytes of all LLC_PDU received by PCU Total number of Downlink LLC_PDU sent: Number of Downlink LLC_PDU sent
NS Performance Measurement Number of NS PDUs sent by NS sublayer: Number of NS PDU sent Number of NS PDUs received by NS sublayer: Number of NS PDU received Number of NS PDUs discarded by NS sublayer: Number of NS PDU discarded Number of RESET ACK messages sent by NS sublayer to peer end Number of RESET ACK messages received by NS sublayer from peer end Number of BLOCK ACK messages sent by NS sublayer from peer end Number of BLOCK ACK messages received by NS sublayer from peer end
Fecha:
G-Abis Interface Performance Measurement Number of normal burst frames received: Number of normal TRAU frames received during one measurement period Number of Out-of-Synchronization frames received: Number of Out-of-Synchronization frames recevied during one measuring period. Number of check error frames received: Number of check error frames received during one measuring period. Number of valid TRAU frames sent: Number of TRAU frames incluiding valid RLC/MACblock data sent by MAC Number of empty TRAU frames sent: Number of TRAU frames not incluiding valid RLC/MAC block data sent by MAC Pb Interface Performance Measurement Number of SABM frames sent: Number of SABM frames requesting link establishment sent during one meassurement period. If the counter is in cero the link is completly disconected. If the counter is non cero it represent the local end attemps to reestablish the link for N times. Number of SABM frames received: Number of SABM frames requesting link establishment. If this counter is more than 1 mean the link is flaping Elaborado por: Enrique Torres
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KPI's and Counters for GPRS
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Number of UA frames sent: Number of link stablishment response frames sent. One UA frame is a response to SABM frame Number of UA frames received: Number of link stablishment response frames received. One UA frame is a response to SABM frame Number of REJ frames sent: Number of REJECT frames sent. Show a poor transmission quality if more than 0~5 per 15 minutes. Number of REJ frames received: Number of REJECT frames received. Show a poor transmission quality Number of Information frame received: Number of information frames received . If more than 0~100 per second another LAPD link should be added. Bytes of Information frames sent: Number of bytes sent using informaton frames. If more than 0~6000 bytes per second another LAPD link should be added. Bytes of Information frames received: Number of bytes received using informaton frames. If more than 0~6000 bytes per second another LAPD link should be added. Number of information frame resend times: Number of information resend frames. If more than 0~10 per 15 minutes, there is a poor transmission quality. Number of data transmit requests from L3 to LAPD: Number of data transmit request initiated by L3 to LAPD. If more than 0~100 per second another LAPD link should be added. Bytes of data transmit requests from L3 to LAPD: Number of bytes from transmit request initiated by L3 to LAPD. If more than 0~100 bytes per second another LAPD link should be added. Number of received frames with wrong received number: Number of frames whose receiving sequence number are not right. If more than one a poor quality is present Number of downlink message queue overflows: Number of overflows ocurring in the queue from L3 to LAPD module. If more than 0 another LAPD link should be added. Number of uplink message queue overflows: Number of overflows ocurring in the queue from LAPD to L3 module. If more than 0 another LAPD link should be added. Total number of frames received: Number of frames received Total number of error frames received: Number of error frames received Total number of frames sent: Number of frames sent Reference ranges are calculated for one 64Kbps LADP signaling link Cell Performance Measurement Packet Access Performance Measurement on PACCH Number of uplink assignments: Number of all uplink assignments request (including single block assignment) Number of successful uplink assignments: Number of uplink assignment success Number of uplink inmediate assignments: Number of all uplink inmediate assignments Number of successful uplink inmediate assignments: Number of uplink inmediate assignment success Number of uplink assignment on PACH: Number of uplink assignment received on PACH Number of successful uplink assignment on PACH: Number of successful uplink assignment on PACH Number of downlink assignments: Number of all downlink assignments request (including single block assignment) Number of successful downlink assignments: Number of downlink assignment success Number of downlink inmediate assignments: Number of all downlink inmediate assignments Number of successful downlink inmediate assignments: Number of downlink inmediate assignment success Number of downlink assignment on PACH: Number of downlink assignment received on PACH Number of successful downlink assignment on PACH: Number of successful downlink assignment on PACH
Fecha:
Paging Request Measurement Number of packet paging request sent:: Number of packet paging messages delivered by PCU Number of circuit paging request sent: Number of circuit paging messages delivered by PCU Uplink TBF Establishment/Release Measurement Number of uplink TBF establishment attempts: Number of request messages received by PCU from MS for establishing uplink TBF. This measure reveal the GPRS traffic load on the cell Number of successful uplink TBF establisment: Number of successful uplink data blocks received by the PCU from MS Number of uplink TBF establishment failures due to MS no response: When Ratio of successful uplink TBF establishment is too low check this KPI. If the measure value is too high the posible reason is poor radio quality of the cell
Elaborado por: Enrique Torres
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KPI's and Counters for GPRS
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Number of uplink TBF establishment failures due to no channel: When Ratio of successful uplink TBF establishment is too low check this KPI. If the measure value is too high the posible reason is insuficient channels on the cell Number of uplink TBF abnormal release due to N3101 overflow (MS no response): When you find that the uplink TBF normal release is to low check this statistic if the measure is too low could be a poor radio quality Number of uplink TBF abnormal release due to N3103 overflow (MS no response): When you find that the uplink TBF normal release is too low check this statistic if the measure is too low could be a poor radio quality Number of uplink TBF abnormal release due to SUSPEND: When you find that the uplink TBF normal release is to low check this statistic if the measure is too high could be a MS initiating the circuit service during the course of packet service. It may also be that the cell is at the edge of network location area and the MS in this cell should frecuently initiate location update. Number of uplink TBF abnormal release due to FLUSH: When you find that the uplink TBF normal release is to low check this statistic if the measure is too high could be a frecuently cell reselection of the MS. The radio network enviroment should be carefully planned Number of uplink TBF abnormal release due to no channel: If this value is relative high, it may be caused by the radio channel is fault or blocked manually Average number of concurrent uplink TBF: Measure the average number of concurrent uplink TBF Average duration of uplink TBF: Measure the average duration of normally release uplink TBF Downlink TBF Establishment/Release Measurement Number of downlink TBF establishment attempts: Number of request messages received by PCU from MS for establishing downlink TBF Number of successful downlink TBF establisment: Number of successful downlink data blocks received by the PCU from MS Number of downlink TBF establishment failures due to no channel: If ratio of downlink TBF establishment successes is low check this, If this value is relative high, it may be caused by the radio channel is fault or insuficiente in radio channel resource. Number of downlink TBF establishment failures due to MS no response: When Ratio of successful downlink TBF establishment is too low check this KPI. If the measure value is too high the posible reason is poor radio quality of the cell Number of downlink TBF abnormal release due to N3105 overflow: When you find that the downlink TBF normal release is too low check this statistic if the measure is too low could be a poor radio quality Number of downlink TBF abnormal release due to SUSPEND: When you find that the downlink TBF normal release is to low check this statistic if the measure is too high could be a MS initiating the circuit service during the course of packet service. It may also be that the cell is at the edge of network location area and the MS in this cell should frecuently initiate location update. Number of downlink TBF abnormal release due to FLUSH: When you find that the downlink TBF normal release is to low check this statistic if the measure is too high could be a frecuently cell reselection of the MS. The radio network enviroment should be carefully planned Number of downlink TBF abnormal release due to no channel: If this value is relative high, it may be caused by frecuently breakdown of wireless channel or manually block of the channel Average number of concurrent downlink TBF: Measure the average number of concurrent downlink TBF Average duration of downlink TBF: Measure the average duration of normally release downlink TBF
Uplink LLC Data Transmission Measurement Total number of uplink TBF: Total number of uplink TBF establishment during one period Total number of uplink LLC_PDU sent: Total number of uplink LLC PDU during one period Total bytes of uplink LLC_PDU sent: Total bytes of uplink LLC PDU during one period Uplink Throughput (Kbits/seg): Measure the mean rate of the uplink data on LLC layer
Downlink LLC Data Transmission Measurement Total number of downlink TBF: Total number of downlink TBF establishment during one period Total number of downlink LLC_PDU sent: Total number of downlink LLC PDU during one period Total bytes of downlink LLC_PDU sent: Total bytes of downlink LLC PDU during one period Downlink Throughput (Kbits/seg): Measure the mean rate of the downlink data on LLC layer
Elaborado por: Enrique Torres
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KPI's and Counters for GPRS
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Uplink RLC Data Transmission Measurement Total number of uplink RLC data blocks Total number of uplink RLC data blocks using CS1 Total number of uplink RLC data blocks using CS2 Total number of uplink RLC data blocks using CS3 Total number of uplink RLC data blocks using CS4 Retransmission rate of RLC uplink using CS1 (%): This measurement must be in a range of 0~10% Retransmission rate of RLC uplink using CS2 (%): This measurement must be in a range of 0~10% Retransmission rate of RLC uplink using CS3 (%): This measurement must be in a range of 0~10% Retransmission rate of RLC uplink using CS4 (%): This measurement must be in a range of 0~10% Downlink RLC Data Transmission Measurement Total number of downlink RLC data blocks Total number of downlink RLC data blocks using CS1 Total number of downlink RLC data blocks using CS2 Total number of downlink RLC data blocks using CS3 Total number of downlink RLC data blocks using CS4 Retransmission rate of RLC downlink using CS1 (%): This measurement must be in a range of 0~10% Retransmission rate of RLC downlink using CS2 (%): This measurement must be in a range of 0~10% Retransmission rate of RLC downlink using CS3 (%): This measurement must be in a range of 0~10% Retransmission rate of RLC downlink using CS4 (%): This measurement must be in a range of 0~10% Cell Radio Channel Performance Measurement Number of RLC data blocks received on uplink PDTCH/PACCH: Measure the number of RLC data blocks received on the uplink PDTCH/PACCH. If the statistic result is higher than traffic model is recommended make an expansion. Number of RLC data blocks received on downlink PDTCH/PACCH: Measure the number of RLC data blocks received on the downlink PDTCH/PACCH. If the statistic result is higher than traffic model is recommended make an expansion. Number of cell reselection at short interval by MS: Number of times of a MS stays in the cell for less than the specified time. Number of cell ping-pong reselection by MS: When MS switched from cell A to cell B and switches back to cell A in the configured time, the measured value wiil be incremented by one. Resource Maintenance Performance Measurement Number of BSC-originated cell resets: Number of cell reset messages from BSC received. The posible reasons for this messages are base station reset, cell reset originated by OM at BSC, fault recovery of LAPD link at Pb interface, etc. Number of BSC-originated cell blocks: Number of cell blocking originated by BSC Number of Gb originated cell blocking: Number of cell blocking originated by fault at Gb interface, SGSN originated BVC PTP blocking, PCU OM originated BVC PTP blocking, etc Number of BSC originated channel blocking: Number of BSC originated channel blocking PDCH Resource Performance Measurement Mean number of available PDCH: Mean number of available PDCH in the cell during one measuring period Mean number of occupied PDCH: Mean number of available PDCH in the cell during one measuring period Number of dynamic PDCH reclaimed by BSC: Number of attemps to convert a PDCH to TCH Number of pre-empted PDCH carrying packet traffic: Number of attemps to convert a PDCH with packet traffic in TCH Number of attempts at converting TCH to PDTCH: When the dynamic channel request message is sent to the BSC this counter value will be incremented by one Number of successful conversions from TCH to PDTCH: When the dynamic TCH converts to PDCH successfully, the measured value will be incremented by one.
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KPI's and Counters for GPRS
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PDCH Maximum value Measurement Maximum number of available PDCH Minimum number of available PDCH Maximum number of occupied PDCH Minimun number of occupied PDCH
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