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Single Cell functional test
         ( SCFT )
3 g scft
SCFC‐1
                              •   Pilot – Scrambling code – identify cell as per 
                                  planned in cell 
                              •   Cell info Message – broad cast name of area on 
                                  Cell info Message – broad cast name of area on
                                  mobile screen
                              •   L‐M Complete‐ Land line to Mobile, to check 
                                  workability
                              •   M‐L – Mobile to Land line, to check workability
All these info can be find 
                              •   M‐M ( TTSL ) complete – TATA Mobile to TATA 
from stationary test
                y
                                  Mobile , normally TATA 3G to TATA 2G / 3G ( 
                                  Mobile normally TATA 3G to TATA 2G / 3G (
                                  depends on other phones in which technology )
                              •   M‐M ( Other ) complete ‐ – TATA Mobile to Other 
                                  Mobile , normally TATA 3G to other 2G / 3G ( 
                                  Mobile normally TATA 3G to other 2G / 3G (
                                  depends on other phones in which technology )
SCFC‐2
                              •   BLER  Block error rate ( describe how good is radio channel quality, BLER Directly 
                                  BLER – Block error rate ( describe how good is radio channel quality BLER Directly
                                  related to voice quality , It should be less as possible < 2 %)
                              •   EcNo‐ Energy per Noise ( describe how good is RF signal quality in terms of 
                                  Interference. EcNo value representation of health of network. It should between 
                                  – 3 to ‐9 dB in good condition ). If it is poor, it lead to high BLER and Call drop . 
                                  EcIo may get lower not just due to Ec is poor but also due other neighbour cells  
                                  are interferecing.
                                  are interferecing
                              •   RSCP – Recive strength of  CPICH‐ Common Pilot channel code power – Every has 
                                  has Pilot Ch with certain fix power ( typically 2 Watt ( 33 dBm ) ) and due to path 
                                  loss from Base station to Mobile, signal strength get faded. Ec indicates Chip 
                                  energy , its obvious , if you are far Ec signal strength low. Desire value better than 
                                  > ‐90 dBm. If Ec is good it may be EcIo may also good, Which is not completely 
                                  true.
                                  true
                              •   RSSI – Receive Signal strength indicator – It is total receive power of 5 MHz 
                                  channel bandwidth of WCDMA, it should be better than – 90 dBm
All these info can be find    •   MS Tx Pwr – Mobile Transmit Power ‐ It indicate how much Mobile is 
                                  transmitting power, Lower transmit power is better for network. MS can transmit 
from dedicated Driving g          between ‐40 to + 21 dBm and Data card ‐40 to +23 dBm. If UP Link has 
                                  interference MS has to transmit more to reach Node B. Desire value < +10 dBm
                                  i     f       MS h               i                 hN d B D i          l     10 dB
mode ‐ Moving                 •   Active Set / HO State : In WCDMA if Neighbor cell has better EcIo ( > ‐13 dB ) 
                                  normally RNC add them in soft HO, so sometime MS is talking to 2 or 3 cells 
                                  simultaneously.  Those ongoing cell will be part of Active sets, from where you 
                                  can which neighbors are active in soft handover. More in Active sets are not good 
                                  as 1 user is consuming 3 cells and their resources but it may happen if you do not 
                                  do Soft handover due to some  reasons , it may lead to call drop
                                  d       f h d      d                                  l d       ll d
                              •   AMR Codec Rates :‐ Voice has various codec ( Analog to digital with some error 
                                  protection , Voice rate ( User bits+ error protection bits = X kpbs, You can 
                                  compress voice so you can increase more error protection ). When you are in bad 
                                  EcIo or poor Ec ( RSCP ) voice data become more compress which may not be 
                                  good for user perception but you get more space for error protection , AMR is all 
                                  about saving call depends on RF condition. Normally AMR 12.2 kbps call is very 
                                  desirable. If other codec ( 7.8 , 5.6 ..are not enable then mostly you will get 12.2 
                                  kbps )
SCFC‐3
                              •   Idle Neighbour List ‐ Network sends list of neighbor cells with their 
                                  Scrambling code to MS in idle mode so MS can reselect best cells to 
                                  be latch, so MS can listen paging messages if any and other network 
                                  b l h          MS       li       i             if        d h             k
                                  related broad casted parameter which MS require to understand 
                                  network setting. So based on those all understanding of parameter 
                                  MS take decision how to react in idle mode and also during initial 
                                  phase of access. Our objective to note down who are the neighbor 
                                    h      f           O     bj i           d        h        h     i hb
All these info can be find        define from OSS and what we can see from system information 
from idle stationary or           during Drive test. Our job to compare what is define in OSS and 
                                  what we are receiving in field and find out if any discrepancy or 
dedicated driving mode
dedicated driving mode            mismatch.
                                     i    t h
                              •   Handoff Parameter – in 3G, MS is not sending measured neighbor 
All these info can be find        cells detail always, it will only send when it required ? When certain 
from Driving mode ‐
            g                     criteria fulfill for neighbor compare to serving cell then Mobile send 
Moving                            some measurement report to Node B and then Node B will send to 
                                  RNC and based on Handover parameter setting and algorithm RNC 
                                  will instruct Node B to inform Mobile to add or remove or replace 
                                  neighbor cells. Handoff parameters can be seen from system 
                                  information. Our job to compare what is define in OSS and what we 
                                  are receiving in field and find out if any discrepancy or mismatch.
                              •   HO from 1 to  ‐ 2nd or 3rd cell of same site, this test to check intra 
                                  site Soft handovers are happening or not. 
                              •   HO from 2 to  ‐ 1st  or 3rd cell of same site, this test to check intra 
                                  site Soft handovers are happening or not. 
SCFC‐4
                              •   Ho from 3 to –  1st  or 2nd   cell of same site, this test to check intra site Soft 
                                  handovers are happening or not. 
                              •   Soft Ho to other sites – if h i
                                  S f H         h i          if other sites neighbor cells are having better EcIo and they 
                                                                               i hb       ll     h i b          E I    d h
                                  satisfy parameter setting of Handover in that case, mobile send to send 1A event 
                                  measurement report to RNC via Node B and then we have to add neighbor cell in 
                                  to soft handover ( in active set ). Addition of neighbor cell only possible if it is 
                                  define as neighbor in serving cell. If it is define we can see from Idle neighbor cell 
                                                                      p                 g             g
                                  list or from OSS data base dump. Sometime Neighbor cell might has some 
                                  hardware or congestion and addition may not be possible, so we need to observe 
                                  and note it down whether Soft handover with other site’ cell got success or fail. 
                                  Sometime other site might not radiating so in idle neighbor list all is define but 
                                  Mobile cannot find it during measurement so it may be reason it was not possible 
                                  and other far site’s cells are coming and those may not be define as neighbor which 
                                  results in to poor serving EcIo.
                                  results in to poor serving EcIo
                              •   Hard HO – normally in WCDMA technology mostly handover are soft handover, but 
                                  some type of handover like between cell belongs to different RNC or 3G to 2G 
                                  handover for voice considered as hand handover.  We have to check is it happening 
All these info can be find        or not ?
from dedicated Driving g      •   3G Voice call HO to 2G – if 3G load is high or EcIo or RSCP value is very poor than 
                                                                              g                                 yp
mode ‐ Moving                     some threshold value then it may trigger 3G to 2G handover. Means 3G cell has 
                                  some 2G neighbors also to take care of voice call in case of poor condition.
                              •    3G Data call HO to 2G – if 3G load is high or EcIo or RSCP value is very poor than 
                                  some threshold value then it may trigger 3G to 2G handover. Means 3G cell has 
                                  some 2G neighbors also to take care of DATA  call in case of poor condition. 
                                  Normally it called it as 3G to 2G Cell reselection as in Data call ( except 64 kbps 
                                  Normally it called it as 3G to 2G Cell reselection as in Data call ( except 64 kbps
                                  Video Data call ).
                              •   2G Voice Call HO to 3G – 2G cell layer is mostly to take care of voice but if you wish 
                                  and 2G is loaded more than certain threshold you can shift calls to 3G if 3G cell has 
                                  good RSCP and EcIo at that location. If such event occurs MS send Measurement 
                                     p                               p     g
                                  report to 2G BSC and then as per neighbor define table BSC talk to RNC and get it    g
                                  done. If from 2G to 3G neighbor is not define then Mobile doesn’t know about 3G 
                                  and never scan and measure them and so there is no chance for 2g to 3g handover.
SCFC‐5
                          •   2G Data call HO to 3G – Normally 3G is good for better data throughput 
                              if Mobile is capable for 3G technology. If some how due to any reason 
                              mobile is connect to 2G and doing GPRS/EDGE and 3G neighbor defined 
                                  bl                        dd            /         d        hb d f d
                              its desirable to switch from 2G to 3G and maximize data through put. 
                              There are certain condition where Mobile has to keep checking 
                              availability of 3G and if found with certain RSCP and EcIo and if 3G nbr is 
                              defined it may select 3G cell.
                          •   Ping/Latency Test – when Mobile is in 3G data call, you might has 
                              different type of data channel size ( 32/64/128/256/386 kbps its 
                              depends on RF condition and Cell loading ). You have to do Ping test to 
                              specific IP address with that data channel size. In ping , what we do ? 
                              Ping command send certain size of packet from laptop to IP address –
                                  g                                  p              p p
                              server and server received it and send it back to Laptop. How fast you 
                              can get it back from laptop to server to laptop depends on how good is 
                              your data channel speed and RF condition. We call it as Round Trip Delay  
All these info can be find    Time ( RTT ). Desired value < 200 ms. Latency means delay, certain 
from stationary Data call 
                y             services like video streaming, cannot be good if delay is more. So each 
                                                             g,           g            y
testing cell wise             services has to fulfill certain QoS ( quality of service parameters ) to 
                              satisfy expectation of user experience.
                          •   FTP Upload Throughput – FTP ( file transfer protocol ) – When you are 
                              on 3G data call, you can send specific size of file ( 1 / 2 MB ) to FTP 
                              server, how much time it will take to upload to that ftp server depends 
                              server how much time it will take to upload to that ftp server depends
                              on RF condition, Data Channel ( DCH ) size and Network parameters. If 
                              you have good throughput, you can upload faster. Throughput depends 
                              on you are on Release 99 data call or Release 7(HSPA ) data call. We have 
                              see what is configuration of Data channel we are using during such 
                              uploading. We to monitor and calculate average thought to upload file.
                              uploading. We to monitor and calculate average thought to upload file.
                          •   HTTP Upload Throughput‐ Hyper link transfer protocol – when you 
                              access to internet browser and sending email or uploading photo during 
                              that time measuring throughput. Throughput depends on as mentioned 
                              above point.
SCFC‐6
                           •   FTP Download Throughput – as above like upload, only 
                               different to get the file from server to your laptop.
                               different to get the file from server to your laptop
                           •   HTTP Download Throughput – as above like upload, only 
                               different to download some video or big file or email to your 
                               local laptop
                           •   SMS outgoing – When you are in 3G, You can send SMS to 
                               any phone and check whether this service working or not in 
                               each cell
                           •   SMS incoming – When you are in 3G, You can receive SMS 
                               SMS incoming When you are in 3G You can receive SMS
                               from any phone and check whether this service working or 
All these info can be find     not in each cell
from stationary Data call  •
                y              Video call ( voice CS 64 ) outgoing – Video call in 3G is Circuit 
                                                               g g
testing cell wise              switch call like Voice, it takes fix 64 kbps dedicated end to 
                               end link. As long as you on video call, occupied channel 
                               cannot be share to downgrade. We have to check video calls 
                               are working or not when you do outgoing call.
                               are working or not when you do outgoing call.
                           •   Video call ( voice CS 64 ) incoming – Video call in 3G is Circuit 
                               switch call like Voice, it takes fix 64 kbps dedicated end to 
                               end link. As long as you on video call, occupied channel 
                               cannot be share to downgrade. We have to check video calls 
                                       b h          d         d W h             h k id        ll
                               are working or not when you get incoming video call.
SCFC‐7
                              •   Media On Demand ( PS64, PS128, PS384 ) – in 3G, 
                                  specially Release 99 Packet data call has certain type of 
                                  channel configuration/size. We have to check which 
                                  channel size we are using whatever we do on such 
                                  channel.
                                   h      l




All these info can be find 
from stationary Data call 
                y
testing cell wise

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3 g scft

  • 3. SCFC‐1 • Pilot – Scrambling code – identify cell as per  planned in cell  • Cell info Message – broad cast name of area on  Cell info Message – broad cast name of area on mobile screen • L‐M Complete‐ Land line to Mobile, to check  workability • M‐L – Mobile to Land line, to check workability All these info can be find  • M‐M ( TTSL ) complete – TATA Mobile to TATA  from stationary test y Mobile , normally TATA 3G to TATA 2G / 3G (  Mobile normally TATA 3G to TATA 2G / 3G ( depends on other phones in which technology ) • M‐M ( Other ) complete ‐ – TATA Mobile to Other  Mobile , normally TATA 3G to other 2G / 3G (  Mobile normally TATA 3G to other 2G / 3G ( depends on other phones in which technology )
  • 4. SCFC‐2 • BLER  Block error rate ( describe how good is radio channel quality, BLER Directly  BLER – Block error rate ( describe how good is radio channel quality BLER Directly related to voice quality , It should be less as possible < 2 %) • EcNo‐ Energy per Noise ( describe how good is RF signal quality in terms of  Interference. EcNo value representation of health of network. It should between  – 3 to ‐9 dB in good condition ). If it is poor, it lead to high BLER and Call drop .  EcIo may get lower not just due to Ec is poor but also due other neighbour cells   are interferecing. are interferecing • RSCP – Recive strength of  CPICH‐ Common Pilot channel code power – Every has  has Pilot Ch with certain fix power ( typically 2 Watt ( 33 dBm ) ) and due to path  loss from Base station to Mobile, signal strength get faded. Ec indicates Chip  energy , its obvious , if you are far Ec signal strength low. Desire value better than  > ‐90 dBm. If Ec is good it may be EcIo may also good, Which is not completely  true. true • RSSI – Receive Signal strength indicator – It is total receive power of 5 MHz  channel bandwidth of WCDMA, it should be better than – 90 dBm All these info can be find  • MS Tx Pwr – Mobile Transmit Power ‐ It indicate how much Mobile is  transmitting power, Lower transmit power is better for network. MS can transmit  from dedicated Driving g between ‐40 to + 21 dBm and Data card ‐40 to +23 dBm. If UP Link has  interference MS has to transmit more to reach Node B. Desire value < +10 dBm i f MS h i hN d B D i l 10 dB mode ‐ Moving • Active Set / HO State : In WCDMA if Neighbor cell has better EcIo ( > ‐13 dB )  normally RNC add them in soft HO, so sometime MS is talking to 2 or 3 cells  simultaneously.  Those ongoing cell will be part of Active sets, from where you  can which neighbors are active in soft handover. More in Active sets are not good  as 1 user is consuming 3 cells and their resources but it may happen if you do not  do Soft handover due to some  reasons , it may lead to call drop d f h d d l d ll d • AMR Codec Rates :‐ Voice has various codec ( Analog to digital with some error  protection , Voice rate ( User bits+ error protection bits = X kpbs, You can  compress voice so you can increase more error protection ). When you are in bad  EcIo or poor Ec ( RSCP ) voice data become more compress which may not be  good for user perception but you get more space for error protection , AMR is all  about saving call depends on RF condition. Normally AMR 12.2 kbps call is very  desirable. If other codec ( 7.8 , 5.6 ..are not enable then mostly you will get 12.2  kbps )
  • 5. SCFC‐3 • Idle Neighbour List ‐ Network sends list of neighbor cells with their  Scrambling code to MS in idle mode so MS can reselect best cells to  be latch, so MS can listen paging messages if any and other network  b l h MS li i if d h k related broad casted parameter which MS require to understand  network setting. So based on those all understanding of parameter  MS take decision how to react in idle mode and also during initial  phase of access. Our objective to note down who are the neighbor  h f O bj i d h h i hb All these info can be find  define from OSS and what we can see from system information  from idle stationary or   during Drive test. Our job to compare what is define in OSS and  what we are receiving in field and find out if any discrepancy or  dedicated driving mode dedicated driving mode mismatch. i t h • Handoff Parameter – in 3G, MS is not sending measured neighbor  All these info can be find  cells detail always, it will only send when it required ? When certain  from Driving mode ‐ g criteria fulfill for neighbor compare to serving cell then Mobile send  Moving some measurement report to Node B and then Node B will send to  RNC and based on Handover parameter setting and algorithm RNC  will instruct Node B to inform Mobile to add or remove or replace  neighbor cells. Handoff parameters can be seen from system  information. Our job to compare what is define in OSS and what we  are receiving in field and find out if any discrepancy or mismatch. • HO from 1 to  ‐ 2nd or 3rd cell of same site, this test to check intra  site Soft handovers are happening or not.  • HO from 2 to  ‐ 1st  or 3rd cell of same site, this test to check intra  site Soft handovers are happening or not. 
  • 6. SCFC‐4 • Ho from 3 to – 1st  or 2nd cell of same site, this test to check intra site Soft  handovers are happening or not.  • Soft Ho to other sites – if h i S f H h i if other sites neighbor cells are having better EcIo and they  i hb ll h i b E I d h satisfy parameter setting of Handover in that case, mobile send to send 1A event  measurement report to RNC via Node B and then we have to add neighbor cell in  to soft handover ( in active set ). Addition of neighbor cell only possible if it is  define as neighbor in serving cell. If it is define we can see from Idle neighbor cell  p g g list or from OSS data base dump. Sometime Neighbor cell might has some  hardware or congestion and addition may not be possible, so we need to observe  and note it down whether Soft handover with other site’ cell got success or fail.  Sometime other site might not radiating so in idle neighbor list all is define but  Mobile cannot find it during measurement so it may be reason it was not possible  and other far site’s cells are coming and those may not be define as neighbor which  results in to poor serving EcIo. results in to poor serving EcIo • Hard HO – normally in WCDMA technology mostly handover are soft handover, but  some type of handover like between cell belongs to different RNC or 3G to 2G  handover for voice considered as hand handover.  We have to check is it happening  All these info can be find  or not ? from dedicated Driving g • 3G Voice call HO to 2G – if 3G load is high or EcIo or RSCP value is very poor than  g yp mode ‐ Moving some threshold value then it may trigger 3G to 2G handover. Means 3G cell has  some 2G neighbors also to take care of voice call in case of poor condition. • 3G Data call HO to 2G – if 3G load is high or EcIo or RSCP value is very poor than  some threshold value then it may trigger 3G to 2G handover. Means 3G cell has  some 2G neighbors also to take care of DATA  call in case of poor condition.  Normally it called it as 3G to 2G Cell reselection as in Data call ( except 64 kbps  Normally it called it as 3G to 2G Cell reselection as in Data call ( except 64 kbps Video Data call ). • 2G Voice Call HO to 3G – 2G cell layer is mostly to take care of voice but if you wish  and 2G is loaded more than certain threshold you can shift calls to 3G if 3G cell has  good RSCP and EcIo at that location. If such event occurs MS send Measurement  p p g report to 2G BSC and then as per neighbor define table BSC talk to RNC and get it  g done. If from 2G to 3G neighbor is not define then Mobile doesn’t know about 3G  and never scan and measure them and so there is no chance for 2g to 3g handover.
  • 7. SCFC‐5 • 2G Data call HO to 3G – Normally 3G is good for better data throughput  if Mobile is capable for 3G technology. If some how due to any reason  mobile is connect to 2G and doing GPRS/EDGE and 3G neighbor defined  bl dd / d hb d f d its desirable to switch from 2G to 3G and maximize data through put.  There are certain condition where Mobile has to keep checking  availability of 3G and if found with certain RSCP and EcIo and if 3G nbr is  defined it may select 3G cell. • Ping/Latency Test – when Mobile is in 3G data call, you might has  different type of data channel size ( 32/64/128/256/386 kbps its  depends on RF condition and Cell loading ). You have to do Ping test to  specific IP address with that data channel size. In ping , what we do ?  Ping command send certain size of packet from laptop to IP address – g p p p server and server received it and send it back to Laptop. How fast you  can get it back from laptop to server to laptop depends on how good is  your data channel speed and RF condition. We call it as Round Trip Delay   All these info can be find  Time ( RTT ). Desired value < 200 ms. Latency means delay, certain  from stationary Data call  y services like video streaming, cannot be good if delay is more. So each  g, g y testing cell wise services has to fulfill certain QoS ( quality of service parameters ) to  satisfy expectation of user experience. • FTP Upload Throughput – FTP ( file transfer protocol ) – When you are  on 3G data call, you can send specific size of file ( 1 / 2 MB ) to FTP  server, how much time it will take to upload to that ftp server depends  server how much time it will take to upload to that ftp server depends on RF condition, Data Channel ( DCH ) size and Network parameters. If  you have good throughput, you can upload faster. Throughput depends  on you are on Release 99 data call or Release 7(HSPA ) data call. We have  see what is configuration of Data channel we are using during such  uploading. We to monitor and calculate average thought to upload file. uploading. We to monitor and calculate average thought to upload file. • HTTP Upload Throughput‐ Hyper link transfer protocol – when you  access to internet browser and sending email or uploading photo during  that time measuring throughput. Throughput depends on as mentioned  above point.
  • 8. SCFC‐6 • FTP Download Throughput – as above like upload, only  different to get the file from server to your laptop. different to get the file from server to your laptop • HTTP Download Throughput – as above like upload, only  different to download some video or big file or email to your  local laptop • SMS outgoing – When you are in 3G, You can send SMS to  any phone and check whether this service working or not in  each cell • SMS incoming – When you are in 3G, You can receive SMS  SMS incoming When you are in 3G You can receive SMS from any phone and check whether this service working or  All these info can be find  not in each cell from stationary Data call  • y Video call ( voice CS 64 ) outgoing – Video call in 3G is Circuit  g g testing cell wise switch call like Voice, it takes fix 64 kbps dedicated end to  end link. As long as you on video call, occupied channel  cannot be share to downgrade. We have to check video calls  are working or not when you do outgoing call. are working or not when you do outgoing call. • Video call ( voice CS 64 ) incoming – Video call in 3G is Circuit  switch call like Voice, it takes fix 64 kbps dedicated end to  end link. As long as you on video call, occupied channel  cannot be share to downgrade. We have to check video calls  b h d d W h h k id ll are working or not when you get incoming video call.
  • 9. SCFC‐7 • Media On Demand ( PS64, PS128, PS384 ) – in 3G,  specially Release 99 Packet data call has certain type of  channel configuration/size. We have to check which  channel size we are using whatever we do on such  channel. h l All these info can be find  from stationary Data call  y testing cell wise