3G Optimisation Cookbook_v2

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3G Optimisation Cookbook

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Cell Selection Parameters

QrxlevMin (A_WCEL)

 Description: The minimum required RX level in the cell. This parameter is also used to create value for the parameter DeltaQrxlevmin to be sent in SIB3/4 when the used value is < -115.

 Default value : -115 dBm QqualMin (A_WCEL)

 Description : The minimum required quality level in the cell (Ec/No)  Default : -18 db

UEtxPowerMaxPRACH (A_WCEL)

 Maximum UE transmission power on PRACH

 This parameter defines the maximum transmission power level a UE can use on PRACH. The value of the parameter also affects the cell selection and reselection procedures.

The value of the parameter is sent to UE in the Cell selection and re-selection of System Information Blocks 3 and 4 of the serving cell.

 Default : 21 dBm

AAL2 resources availability in RNC (M800)

RNC_602a

AAL2 resource reservation success rate [%] :

The transport resource request success ratio [%] KPI describes the average success rate of the transport resource reservation attempts for all AAL2 type connections

AAL2_SUCCEEDED - AAL2 signaling requests which have been successfully executed in A2SP

AAL2_REJECTED - AAL2 signaling requests which have failed for any reason. E.g. signaling failed or uplink CAC reject

RES_EXT_CAP - Transport resources requests which are rejected by downlink CAC since there is not enough capacity in the external AAL2 path.

RES_INT_CAP - Resource reservations which are rejected by downlink CAC since there are no RNC-internal AAL2 processing resources available

RES_OTHER - Resource reservations which have failed for any other reason than CAC or signaling (for example route analysis, parameter or DSP resource allocation problem)

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AAL2 Resource Reservation in RAN05(M800)

M800 is useful for monitoring success of the resource reservation requests and able to point out different type of failures, such as

 Lack of Iub bandwidth  Lack of RNC capacity  AAL2 signaling failure

M800 collects the statistics per AAL2 user plane VCC object, note that there can be several UP VCCs!

 The resource reservation is performed in such order that all CAC reservations for RNC internal and external (AAL2 path) resources are done before signaling

 If the CAC actions are successfully completed, the signaling is started and RNC asks BTS to arrange its resources accordingly

 If the CAC actions fail, the signaling phase is not started at all and the signaling counters are not aware of the connections rejected due to RNC AAL2 layer CAC

There are also dedicated counters for HSDPA connections resource reservations

The object of the measurement is the AAL2 path selected with ATM interface ID/VPI/VCI identifiers

 The statistics for the whole RNC (sum of all configured AAL2 paths counters) are available by selecting the measurement object as interface-0/VPI-0/VCI-0

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 Also some failure situations, for example digit analysis failure, are updated only for 0/0/0 object because the actual VCI is not known

Performance Measurements for Transport

Counter

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ISHO vs Failures

Beberapa penampakan Failure yang ada di KPI ISHO : 1. UTRAN_NOT_ABLE_EXEC_ISHHO_RT 2. UE_NOT_ABLE_EXEC_ISHHO_RT 3. UTRAN_NOT_ABLE_EXC_ISHHO_NRT 4. UE_NOT_ABLE_EXEC_ISHHO_NRT 5. UNSUCC_IS_HHO_UE_TRX_PWR_RT 6. UNSUCC_IS_HHO_CPICH_ECNO_RT 7. UNSUCC_IS_HHO_CPICH_RSCP_RT 8. UNSUC_IS_HHO_UE_TRX_PWR_NRT 9. UNSUCC_IS_HHO_CPICH_ECNO_NRT 10. UNSUCC_IS_HHO_CPICH_RSCP_NRT 1. UTRAN_NOT_ABLE_EXEC_ISHHO_RT

Description: Number of inter-system handover failures for RT due to UTRAN. --- The failure can occur, for example, due to the following reasons: relocation preparation procedure failure in the CN, or relocation resource allocation procedure failure in the target BSC. Updated: When the hard handover attempt fails before the serving RNC sends the handover When the RNC receives an RANAP: RELOCATION PREPATION FAILURE message from the CN, or the RNC does not receive an RANAP: RELOCATION COMMAND message from the CN within a certain time period. This counter is updated only during inter-system handovers.

2. UE_NOT_ABLE_EXEC_ISHHO_RT

Description : The number of times when during inter-system handover for RT the source RNC has ordered the UE to use a configuration which the UE does not support. --- If the source RNC instructs the UE to use a configuration that it does not support, the UE will send a

failure message to the source RNC. The handover procedure ends and the UE resumes normal operation as if no handover attempt had occurred.

Updated: When the source RNC receives an RRC: HANDOVER FROM UTRAN FAILURE message from the UE, and the failure cause is "configuration unacceptable".

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3. UTRAN_NOT_ABLE_EXC_ISHHO_NRT

Description: The number of inter-system handover failures for NRT due to UTRAN. Updated: This counter is never updated.

4. UE_NOT_ABLE_EXEC_ISHHO_NRT

Description: The number of times when during inter-system handover for NRT the source RNC has ordered the UE to use a configuration which the UE does not support. --- If the source RNC instructs the UE to use a configuration that it does not support, the UE will send a failure message to the source RNC. The handover procedure ends and the UE resume normal operation as if no handover attempt had occurred.

Updated: When the source RNC receives an RRC: CELL CHANGE ORDER FROM UTRAN FAILURE message from the UE, and the failure cause is "configuration unacceptable".

5. UNSUCC_IS_HHO_UE_TRX_PWR_RT

Description: The number of unsuccessful inter-system handovers caused by UE transmission power for RT. --- If the UE fails to establish the physical channel(s) indicated in the handover command, the UE will revert to the configuration prior to the reception of the handover command (old configuration) and transmit a failure message to the source RNC. The hard handover procedure ends and the UE resumes the normal operation as if no hard handover attempt had occurred.

Updated: When the source RNC receives an RRC: HANDOVER FROM UTRAN FAILURE message from the UE, and the failure cause is not "configuration unacceptable". This counter is updated only when the trigger reason is UE transmission power.

6. UNSUCC_IS_HHO_CPICH_ECNO_RT

Description: The number of unsuccessful inter-system handovers caused by CPICH Ec/No for RT. --- If the UE fails to establish the physical channel(s) indicated in the handover

command, the UE will revert to the configuration prior to the reception of the handover command (old configuration) and transmit a failure message to the source RNC. The hard

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handover procedure ends and the UE resume the normal operation as if no hard handover attempt had occurred.

Updated: When the source RNC receives an RRC: HANDOVER FROM UTRAN FAILURE message from the UE, and the failure cause is not "configuration unacceptable". This counter is updated only when the trigger reason is CPICH Ec/No.

7. UNSUCC_IS_HHO_CPICH_RSCP_RT

Description: The number of unsuccessful inter-system handovers caused by CPICH RSCP for RT. --- If the UE fails to establish the physical channel(s) indicated in the handover

command, the UE will revert to the configuration prior to the reception of the handover command (old configuration) and transmit a failure message to the source RNC. The hard handover procedure ends and the UE resume the normal operation as if no hard handover attempt had occurred.

Updated: When the source RNC receives an RRC: HANDOVER FROM UTRAN FAILURE message from the UE, and the failure cause is not "configuration unacceptable". This counter is updated only when the trigger reason is CPICH RSCP.

8. UNSUC_IS_HHO_UE_TRX_PWR_NRT

Description: The number of unsuccessful inter-system handovers caused by UE transmission power for NRT. --- If the UE fails to establish the physical channel(s) indicated in the

handover command, the UE will revert to the configuration prior to the reception of the handover command (old configuration) and transmit a failure message to the source RNC. The hard handover procedure ends and the UE resumes the normal operation as if no hard handover attempt had occurred.

Updated: When the source RNC receives an RRC: CELL CHANGE ORDER FROM UTRAN FAILURE message from the UE, and the failure cause is not "configuration unacceptable".

9. UNSUCC_IS_HHO_CPICH_ECNO_NRT

Description: The number of unsuccessful inter-system handovers caused by CPICH Ec/No for NRT. --- If the UE fails to establish the physical channel(s) indicated in the handover

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command (old configuration) and transmit a failure message to the source RNC. The hard handover procedure ends and the UE resumes the normal operation as if no hard handover attempt had occurred.

Updated: When the source RNC receives an RRC: CELL CHANGE ORDER FROM UTRAN FAILURE message from the UE, and the failure cause is not "configuration unacceptable". This counter is updated only when the trigger reason is CPICH Ec/No.

10. UNSUCC_IS_HHO_CPICH_RSCP_NRT

Description: The number of unsuccessful inter-system handovers caused by CPICH RSCP for NRT. --- If the UE fails to establish the physical channel(s) indicated in the handover

command, the UE will revert to the configuration prior to the reception of the handover command (old configuration) and transmit a failure message to the source RNC. The hard handover procedure ends and the UE resumes the normal operation as if no hard handover attempt had occurred.

Updated: When the source RNC receives an RRC: CELL CHANGE ORDER FROM UTRAN FAILURE from the UE, and the failure cause is not "configuration unacceptable". This counter is

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ISHO Analysis

Breakdown ISHO analysis into three phases:

 Compressed mode performance (RNC_294c/RNC_295c)

 Inter-system measurement success (RNC_573c/RNC_574c)

 Inter-system handover success (RNC_300e / RNC_301d) If high ISHO compressed mode start not possible

 Check busy hour data of PrxTotal , PtxTotal and M1000C22 AVE_PTXTOT_CLASS_4 and

M1000C20 AVE_PTXTOT_CLASS_3 for AC rejection

If Low ISHO Measurement Success Rate (RNC_573c/RNC_574c)

 Check ADJG neighbour list for missing neighbours or existing neighbour performance

(RNC_905a/RNC_902a)

 Check parameter discrepancy (BSIC) or BSIC collision due to too tight reuse

 Check Compressed mode parameter set

 Check ISHO triggering Threshold – too slow triggering

 Check EcNo Distribution (M1007C38-M1007C47) or propagation delay counters (M1006) to indicate low coverage / interference problem

If Low ISHO Success Rate (RNC_300e <95% / RNC_301d < 80%)

 Check missing or wrong 2G parameter in MSC/SGSN (LAC, CellId, BCCH)

 Check discrepancy of Cell information in RNC

 Check 2G cell GPRS/EGPRS data congestion

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HSDPA Retainability Analysis

1. Identify root cause failure distribution and main contributor of low retainability -

RSRAN079

2. If high HSDPA Radio Link Failures (NRT) – dominant cause

 Compare to Cell Update ATT due to Radio link Failure (M1006C39) and Cell Update ATT due to RLC Recoverable Error (M1006C40)

 Check Serving Cell Change failure rate (KPI RNC_733a) - high SCC failures lead to radio link failure ---> RSRAN079

 Check CQI distribution (M5000C8-M5000C39) or EcNo distribution for bad coverage issue (M1007C38-M1007C47) --> RSRAN039

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 Check HSDPA FMCS Mobility Control Parameter (handover or SCC too late)

 Check call re-establishment T315 timer due to radio link failure

3

. If high HSDPA Non- Radio Link Failures (NRL)

 UE responding with some failure message or not responding to some message but no RL failure (timer expiry) --> RSRAN038

 Check RB reconfiguration, physical channel reconfiguration, NBAP RL reconfiguration failure rate

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HSDPA Retainability Failure Cause Analysis Flowchart

HSDPA Accessibility Analysis

1. Identify root cause of failure distribution and main failure contributor in Services –

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2. If high HSDPA Access Failure _max user fails --> check RSRAN067

3. If high HSDPA Access Failure_UL DCH check

Rejected HS-DSCH return channel due to lack of radio power resource

 Check M1002C521 or M1002C522 or M1000C144 (RAS06) – only when HSDPA static allocation

 Check Cell resource PrxTotal, PtxTotal

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4. If high HSDPA Access Failure_UE

 Check RB reconfiguration failure rate



ICSU log for UE types troubleshooting 5. If high HSDPA Access Failure_BTS

 Lack of UL channel resources (check CE resource utilisation using M5001 counters at BH)

 Too high SHO overhead – all branches must have enough CE capacity if UE is in SHO when HS-DSCH allocation is started

6. HS-DSCH return channel setup fail due to Iub transport

 Breakdown the failure distribution (64,128,384,MAC-d)

 Evaluate number of reconfiguration failure due the transmission

 Check M1005C128 CANC_ADD_SRNC_TRAN_STP_FAIL

 Check RAB_STP_FAIL_XXX_IUB_AAL2, M1001C531-C533

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Optimising Iub considering CID congestion

Following performance indicators are proposed:

M550: Average utilization of AAL2 connections - includes R99, SRB, HSDPA and return channels

 SUM_AAL2_CONNECTIONS / NBR_SAMPLES/ CID MAX = C4/C7/248

M550: Max utilization of AAL2 connections during measurement period

 MAX_AAL2_CONNECTIONS/CID MAX = C6/248 CID Utilization Monitoring Process

 The maximum CID utilisation is followed and forecasted to future so that there is enough time to introduce the new configuration before CID congestion occurs.

 Average CID utilisation helps in interpreting if a peak in the maximum value is normal growth or just load variation.

 CID congestion is usually a problem of special events when there are a lot of voice calls and SMS

 CID congestion is probable in DCH&HSDPA, DCH and RT_DCH VCCs

 Unlikely in others

CID Optimisation Actions and RU10 Features

 The CID congestion needs to be solved by adding a VCC

 DCH&HSDPA (former shared) UP VCC

Likely to cause performance degradation to HSDPA if transmission capacity is not increase - HSDPA rates are limited to VCC PCR

- UBR+ is not recommended with DCH&HSDPA VCC

 Path Selection – CID congestion in RT VCC - Introduce a 2nd RT VCC

- If additional capacity is not available then each VCC will get PCR_RT_NEW = PCR_RT_OLD/2

- Capacity fragmentation may cause increased probability for AAL2 CAC blocking, with AMR the impact should not be big

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Check Iub Performance

# counter yg diambil m550 (reservasi- atm), 530 (utilisasi-atm), m800(aal2 resservasi) # data2 tsb yg aslinya per 15 minit diubah jadi perjam, ditampilin jd grafik (utilisasi, CAC reservasi, CID utilisasi)

# nah kasus yg biasa terjadi, kalo di rf ada masalah accesibility terus due to nya iub,

biasanya kalo kita lihat cid utilisasi dah full (max 248) -- MAX_AAL2_CONNECTIONS (M550C6)

--> M550

# kasus yg lain biasanya seputar descrapensy N2N xconnectnya (no vc, no vp) dari setting di node-b kemudian tellabs dan coco/rnc, utk yg satu ini biasanya ceknya masih manual ketika ada laporan node b misal hsdpa gk ada trafik kita cek di node b, lalu dari coco dump cek, kemudian cek di tellabs, biasanya kita minta berupa “show running config”, bentuknya berupa txt

Nah itu tadi di atas utk iub yg masih atm & hybrid, kalo yg sudah nativeIP,monitor

utilisasinya ngandelin reporting suite RSRAN98 & 99 utk cek reservasi, utilisasi, truoghput, dan utk yg native ini masigh rada ngambang, paling masalahnya ada laporan perfomace node b jatuh kita liaht utilisasi & reservasi dah mentok kita propose upgrade ajeh

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High in call drop rate - WCDMA (Nokia)

1. Check high call drop cells and its neighbouring cells of any faulty alarms

2. Identify call drop root cause failure distribution and main failure contributor (radio, Iu, BTS, Iur, MS, RNC) – Services -> RSRAN079

3. Check SHO KPI if performance < 90% ( leads to radio failure)

 Check if cells are at RNC border (check Iur capacity and SRNC relocation problem)

 Detect badly performing neighbours using HO success rate per adjacency counters

(M1013)

 High incoming HO failure rate in all adjs – check sync alarms

 Assessing neighbor list plan and visualization check with map

 Evaluate HO control parameters and trigger threshold

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 Check missing neighbour (M1015), GSM frequency plan neighbour RNC and MSC database consistency audit, check alarm of reference clock in 3G or in 2G, check 2G TCH congestion

 Check RRC Drop ISHO RT / NRT

5. Detecting DL or UL path loss problem if RAB drop due to radio (dominant call drop cause > 50%)

 Check UL Lost Active KPI from Iub counters (active L1 synchronization failure) to check UL/DL path loss problem

 Check ASU failure rate (UNSUC_ASU) which link to NO RESPONSE FROM RLC

 Mapping radio failures with Tx power and CPICH related parameters -> CPICHToRefRABOffset, PTXDPCH MAX

 Check Call reestablishment timer -> T315

 EcNo distribution for bad coverage issue (M1007C38-M1007C47) 6. Check core network parameter setting if RAB_ACT_FAIL_XXX_IU

 Check SCCP SGSN/RNC IuPS Tias/Tiar if RAB_ACT_FAIL_BACKG_IU 7. If high RAB_ACT_FAIL_XXX_BTS

 Check if any BTS faulty alarm (7653 cell faulty alarm)

 If no alarms, COCO detach/attach 8. If high RAB_ACT_FAIL_XXX_MS

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Identify CSSR

CSSR affected if any of the followings take place :



RRC Conn. Setup Fail



RRC Conn. Access Fail



RAB Setup Fail



RAB Setup Access Fail

RRC/RAB Setup & Access Analysis Process Flow Chart

1. Check the problem cells and its neighbouring cells of any faulty alarms 2. Identify root cause failure distribution using Service Report -> RSRAN073

3. RRC_CONN_STP_FAIL_AC

 Check UL Interference, DL Power & Code occupancy if there is need to upgrade radio capacity

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 UL Power Spikes -> Disable UL Admission Control to if the number of failures is critical

M1002C1 CH_REQ_LINK_REJ_UL_SRNC ----> Evaluate Prx Resource Problem

M1002C2 CH_REQ_LINK_REJ_DL_SRNC --->Evaluate Ptx Resource Problem 4. RRC_CONN_STP_FAIL_BTS

 Evaluate NBAP counters (radio link reconf. Failures) and KPIs for troubleshooting BTS resources

 Check BTS configuration in terms of WAM and CE allocation – Use Channel Element (5001) Counters in order to

 evaluate lack of Channel Elements

 Expand the Capacity or decrease the traffic offered to the site

 In case BTS is not responding delete and re-create COCO 5. RRC_CONN_STP_FAIL_TRANS

 Evaluate Number of reconfiguration failure due the transmission

 Check COCO Configuration

 Use AAL2 Mux in case of two WAM

 Expand the capacity or decrease the traffic offered to the site 6. RRC_CONN_STP_FAIL_RNC

 Typically RNC fault or Incoming SRNC Relocation Failure (inter-RNC border)  Required ICSU log tracing if no RNC fault or SRNC relocation problem

7. RRC_CONN_STP_FAIL_RNTI ALLO FAIL

RNC decides to reject RRC connection request due to RNTI allocation failure caused by RRMU overload

8. RRC_CONN_STP_FAIL_IUB_AAL2_TRANS

Updated when there is shortage or blocking of AAL2 resource

A subset of RRC_CONN_FAIL_TRANS which include ERQ/ECF fail due to some reason such as DMPG

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9. RRC_CONN_ACC_FAIL_RADIO Dominant failure causes

Perform drive test to detect if UL or DL coverage

UL Coverage -> Tune Cell Dominance if the cause is UL interference

DL Coverage -> Tune SCCPCH Power if UE does not receive the RRC Setup Message -> If UE does not synchronize, reduce N312 from 2 to 1 (depends on UE model) or tune CPICHToRefRABOffset vs Qqualmin (or Qrxlevmin)

10. RRC_CONN_ACC_FAIL_MS

UL Coverage -> Tune Cell Dominance (or CPICH) in order to balance UL and DL (if UL interference if not the cause)

11. If RRC setup/access failure due to Radio/MS, it is also possible to check whether UEs are located at distance area or close to cell edge area

Propagate delay counters from RRC measurement M1006C128-C148 reports call setup distance during RRC connection request or cell update

This give hints that either cells has large coverage area (tall sites with over-shooting) or non-optimum cell coverage from neighbouring cells

RAB setup & Access Fail - Root Cause

Analysis

1. Check the problem cells and its neighbouring cells of any faulty alarms 2. Identify root cause failure distribution and main failure contributor using Services ->RSRAN073

3. RAB_STP_FAIL_XXX_AC

Check UL Interference, DL Power & Code occupancy if there is need to upgrade radio capacity

REQ_CS_VOICE_REJ_UL_SRNC -> Evaluate Prx cell resource

REQ_CS_VOICE_REJ_DL_SRNC -> Evaluate Ptx cell resource

NO_CODES_AVAILABLE_SF128/SF32 -> Evaluate AMR voice / PS64 code congestion

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4. RAB_STP_FAIL_XXX_BTS

Evaluate NBAP counters (radio link reconf. Add failures) and KPIs for troubleshooting BTS resources

Check BTS configuration in terms of WAM and CE allocation – Use Channel Element (5001) Counters in order to evaluate lack of Channel Elements

Expand the Capacity or decrease the traffic offered to the site In case BTS is not responding delete and re-create COCO

5. RAB_STP_FAIL_XXX_TRANS

Evaluate Number of reconfiguration failure due the transmission Check M1005C128 CANC_ADD_SRNC_TRAN_STP_FAIL

Check RAB_STP_FAIL_XXX_IUB_AAL2, M1001C531-C533 Check COCO Configuration

6. RAB_ACC_FAIL_XXX_UE

Evaluate Cell resource Prx and Ptx (for example high uplink interference)

Check RB reconfiguration failure ration ( If ATO setting is insufficient – recommmended is 500ms )

7. RAB_ACC_FAIL_XXX_RNC

Typically RNC fault or Incoming SRNC Relocation Failure (inter-RNC border) Required ICSU log tracing if no RNC fault or SRNC relocation problem

Application throughput downlink

1. Open logfile STATIONERY, biasanya menggunakan MS 3 (.3) 2. Join ke folder PS

3. di window folder contents -- klik kanan folder PS -- Statistics -- Packet data statistics 4. dari hasil dilihat sheet "Application throughput downlink" dan bisa dilihat data average PS

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Identify CSSR 2nd

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FMCG Parameter

GSMcauseCPICHEcNo : This parameter indicates whether a handover to GSM caused by low measured absolute CPICH Ec/No of the serving cell is enabled.

When the handover to GSM is enabled, the RNC shall set up an intra-frequency CPICH Ec/No measurement in order to monitor the absolute CPICH Ec/No of the serving cell.

The measurement reporting criteria of the intra-frequency CPICH Ec/No measurement are defined by the Intra-frequency Measurement Control parameters (FMCS object).

Rec: Enabled (1)

GSMcauseCPICHrscp : This parameter indicates whether a handover to GSM caused by low measured absolute CPICH RSCP of the serving cell is enabled.

When the handover to GSM is enabled, the RNC shall set up an intra-frequency CPICH RSCP measurement in order to monitor the absolute CPICH RSCP of the serving cell.

The measurement reporting criteria of the intra-frequency CPICH RSCP measurement are defined by the Intra-frequency Measurement Control parameters (FMCS object).

Rec: Enabled (1)

GSMcauseTxPwrDL : This parameter indicates whether a handover to GSM caused by high downlink DPCH TX power is enabled.

Downlink DPCH TX power threshold for the handover to GSM is determined on service-by-service basis.

Rec: Disabled (0)

GSMcauseTxPwrUL : This parameter indicates whether a handover to GSM caused by high UE TX power level is enabled.

UE TX power threshold for the handover to GSM is determined on service-by-service basis.

Rec: Disabled (0)

GSMcauseUplinkQuality : This parameter indicates whether a handover to GSM caused by bad uplink DCH quality is enabled.

Rec: Disabled (0)

GsmDLTxPwrThrAMR : This parameter determines the downlink DPCH TX power threshold for a CS voice connection.

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inter-RAT (GSM) measurements in compressed mode if the DPCH TX power of a single radio link reaches the threshold. The DL DPCH TX power threshold is relative to the allocated maximum transmission power of the DPCH.

Rec : '-3 dB, internal_value = gui_value * 2

GsmDLTxPwrThrCS : This parameter determines the downlink DPCH TX power threshold for a CS data connection.

When the handover to GSM caused by high DL DPCH TX power is enabled, the RNC starts inter-RAT (GSM) measurements in compressed mode if the DPCH TX power of a single radio link reaches the threshold. The DL DPCH TX power threshold is relative to the allocated maximum transmission power of the DPCH.

GsmDLTxPwrThrNrtPS : This parameter determines the downlink DPCH TX power threshold for a non-real time PS data connection.

GsmDLTxPwrThrRtPS : This parameter determines the downlink DPCH TX power threshold for a real time PS data connection.

GsmMaxMeasPeriod : The maximum number of periodical inter-RAT (GSM) measurement reports determines the maximum allowed duration of the GSM measurement. If the RNC is not able to execute the handover to GSM, it stops the GSM measurement after the UE has sent the predefined number of measurement reports to the RNC.

Rec : 20, internal_value = gui_value

GsmMeasAveWindow : This parameter determines the maximum number of periodical inter-RAT (GSM) measurement reports (maximum size of the sliding averaging window) from which the RNC calculates the averaged GSM RSSI values for the handover decision algorithm.

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GsmMeasRepInterval : This parameter determines the measurement reporting interval for periodical inter-RAT (GSM) measurements.

Rec : 0.5 s, range 0.5 s (2) | 1 s (3) | 2 s (4) | 3 s (5) | 4 s (6)

GsmMinHoInterval : This parameter determines the minimum interval between a successful inter-RAT handover from GSM to UTRAN and the following inter-RAT handover attempt back to GSM related to the same RRC connection.

Rec : 10 s, internal_value = gui_value

GsmMinMeasInterval : This parameter determines the minimum interval between an unsuccessful inter-RAT (GSM) measurement or handover procedure, and the following GSM measurement procedure related to the same RRC connection.

Rec : 2 s, internal_value = gui_value

GsmNcellSearchPeriod : This parameter determines the number of periodical inter-RAT (GSM) measurement reports, starting from the first report after the measurement setup, during which a handover to GSM is not possible. This period allows the UE to find and report all potential GSM neighbour cells before the handover decision.

Rec : 0, internal_value = gui_value

GsmUETxPwrFilterCoeff : In the CELL_DCH state the UE physical layer measurement period for UE TX power measurements is 1 slot. The Filter Coefficient parameter controls the higher layer filtering of physical layer UE TX power measurements before the event evaluation and measurement reporting is performed by the UE.

Rec : 10 ms (8), range : Filtering period approximates 10 ms (8) | Filtering period approximates 15 ms (9) | Filtering period approximates 30 ms (10) | Filtering period approximates 60 ms (11) | Filtering period approximates 120 ms (12) | Filtering period approximates 240 ms (13) | Filtering period approximates 480 ms (14)

GsmUETxPwrThrAMR : This parameter determines the UE TX power threshold for a CS voice connection. If the handover to GSM caused by high UE TX power level is enabled, the RNC starts inter-RAT (GSM) measurements in compressed mode when the UE TX power reaches this threshold. The UE TX power threshold is relative to the maximum TX power level an UE can use on the DPCH in the cell (or the maximum RF output power capability of the UE, whichever is lower).

Rec : '-3dB as default , -60dB only on 3G congested site defined by TSEL to force AMR to 2G, internal_value = gui_value

GsmUETxPwrThrCS : This parameter determines the UE TX power threshold for a CS data connection. If the handover to GSM caused by high UE TX power level is enabled, the RNC starts inter-RAT (GSM) measurements in compressed mode when the UE TX power reaches this threshold. The UE TX power threshold is relative to the maximum TX power level an UE can use on the DPCH in the cell (or the maximum RF output power capability of the UE,

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whichever is lower).

Rec : '-3 dB, internal_value = gui_value

GsmUETxPwrThrNrtPS : This parameter determines the UE TX power threshold for a non-real time PS data connection. If the handover to GSM caused by high UE TX power level is enabled, the RNC starts inter-RAT (GSM) measurements in compressed mode when the UE TX power reaches this threshold. The UE TX power threshold is relative to the maximum TX power level an UE can use on the DPCH in the cell (or the maximum RF output power capability of the UE, whichever is lower).

GsmUETxPwrThrRtPS : This parameter determines the UE TX power threshold for a real time PS data connection. If the handover to GSM caused by high UE TX power level is

enabled, the RNC starts inter-RAT (GSM) measurements in compressed mode when the UE TX power reaches this threshold. The UE TX power threshold is relative to the maximum TX power level an UE can use on the DPCH in the cell (or the maximum RF output power capability of the UE, whichever is lower).

GsmUETxPwrTimeHyst : If the handover to GSM caused by high UE TX power is enabled, the RNC starts inter-RAT (GSM) measurements in compressed mode when the UE TX power

reaches a predefined threshold. If the UE TX power goes down again (after the UE TX power threshold has once triggered), the UE TX Power Time Hysteresis determines the time period during which the UE TX power must stay below the UE TX power threshold before the RNC calls off the GSM measurements caused by the high UE TX power.

Rec : 320 ms (11)

GsmMinSLHOInterval : This parameter defines the minimum interval between a successful service- or based inter-RAT handover from GSM to UTRAN and the next service- or load-based inter-RAT handover attempt back to GSM, related to the same RRC connection.

This parameter is effective if the original handover reason is known to be a service- or load-based one.

Rec : 30, internal_value = gui_value, unit s, Recommeded value is only applicable if GSM ==> UTRAN IRAT HO is available

AMRDirReCell : This parameter enables and disables the use of Directed Retry of AMR call Inter-system Handover. If the value is 'Enabled', then AMR calls are directed to the GSM network in case of UTRAN congestion, in order to improve the setup of AMR calls. If the value is 'Disabled', then AMR calls are rejected in case of UTRAN congestion.

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DLDPCHTxPwrClOffset : This parameter defines the cancellation threshold (DL_DPCH_TXPWR_THRESHOLD+DLDPCHTxPwrClOffset) for the DL DPCH TX Pwr.

Def : -3 dB

ISHOClcauseCPICHEcNo : This parameter indicates whether an inter-system handover cancellation caused by a CPICH Ec/No exceeding the cancellation threshold is enabled or not. If the value is '0', the ISHO cancellation due to CPICH Ec/No is disabled. If the value is '1', the ISHO cancellation due to CPICH Ec/No is enabled.

ISHOClcauseCPICHrscp : This parameter indicates whether an inter-system handover

cancellation caused by a CPICH RSCP exceeding the cancellation threshold is enabled or not. If the value is '0', the ISHO cancellation due to CPICH RSCP exceeding the cancellation

threshold is disabled. If the value is '1', the ISHO cancellation due to CPICH RSCP exceeding the cancellation threshold is enabled.

ISHOClcauseTxPwrDL : This parameter indicates whether an inter-system handover

cancellation caused by a low measured Downlink DPCH Transmission power level is enabled or not. If the value is '0', the ISHO cancellation due to low measured Downlink DPCH

Transmission power level is disabled. If the value is '1', the ISHO cancellation due to low measured Downlink DPCH Transmission power level is enabled.

ISHOClcauseTxPwrUL : This parameter indicates whether an inter-system handover

cancellation caused by UE Transmission power decreasing below the reporting threshold is enabled or not. If the value is '0', the ISHO cancellation due to UE Transmission power is disabled. If the value is '1', the ISHO cancellation due to UE Transmission power is enabled.

Export data Nemo to Mapinfo

Cara export data Nemo ke Mapinfo adalah sebagai berikut :

Setelah kumpulan logfile (idle atau dedicated) di UMTS --> UMTS Map Sumary, alangkah enaknya kalau kita bekerjanya di Mapinfo, krn lbh mudah untuk proses plot.

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FMCS Parameter

ActiveSetWeightingCoefficient : Active Set Weighting Coefficient (W) is used to weight either the measurement result of the best active set cell (M_best) or the sum of

measurement results of all active set cells (M_sum) when the UE calculates the reporting range for the events 1A (cell addition) and 1B (dropping of cell).

The formula is: W * M_sum + ( 1 - W )* M_best.

Def : 0

AdditionReportingInterval : When a monitored cell enters the reporting range and triggers event 1A (cell addition), the UE transmits a Measurement Report to the RNC. If the RNC is not able to add the monitored cell to the active set, the UE continues reporting after the initial report by reverting to periodical measurement reporting.

The parameter Addition Reporting Interval determines the interval between periodical measurement reports when such reporting is triggered by the event 1A.

Def : 2 --> 0.5 s

AdditionTime : When a monitored cell enters the reporting range (addition window), the cell must continuously stay within the reporting range for a given period of time before the UE can send a Measurement Report to the RNC in order to add the cell into the active set (event 1A).

The length of this period is controlled by the parameter Addition Time.

Rec : (11) 320 ms ==>RT, (11) 320 ms ==> NRT, (13) 1280 ms ==>HSDPA

AdditionWindow : Addition Window determines the relative threshold (A_Win) used by the UE to calculate the reporting range of event 1A. The threshold is either relative to the CPICH Ec/No measurement result of the best active set cell (M_best), or to the sum of active set measurement results (M_sum), depending on the value of the parameter Active Set

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Weighting Coefficient (W).

When the CPICH Ec/No measurement result of a monitored cell (M_new) enters the reporting range, the UE transmits a Measurement Report to the RNC in order to add the monitored cell into the active set:

M_new >= W * M_sum + ( 1 - W )* M_best - A_Win

Rec : (8) 4dB ==> RT, (5) 2.5dB ==> NRT, (0) 0dB ==> HSDPA

DropTime : When an active set cell leaves the reporting range (drop window), the cell must continuously stay outside the reporting range for a given period of time before the UE can send a Measurement Report to the RNC in order to remove the cell from the active set (event 1B).

The length of this period is controlled by the parameter Drop Time.

Def : 640 ms (12)

DropWindow : Drop Window determines the relative threshold (D_Win) which is used by the UE to calculate the reporting range of event 1B. The threshold is either relative to the CPICH Ec/No measurement result of the best active set cell (M_best) or to the sum of active set measurement results (M_sum), depending on the value of the parameter Active Set Weighting Coefficient (W).

When the CPICH Ec/No measurement result of an active set cell (M_old) leaves the reporting range, the UE transmits a Measurement Report to the RNC in order to remove the cell from the active set:

M_old <= W * M_sum + ( 1 - W )* M_best - D_Win

Def : (12) 6dB ==> RT, (8) 4dB ==> NRT, (8) 4dB ==> HSDPA

EcNoFilterCoefficient : In the CELL_DCH state the UE physical layer measurement period for intra-frequency CPICH Ec/No measurements is 200 ms. The Filter Coefficient parameter controls the higher layer filtering of physical layer CPICH Ec/No measurements before the event evaluation and measurement reporting is performed by the UE.

Def : 3 (600 ms)

HHoEcNoCancel : If the inter-frequency or inter-RAT (GSM) handover caused by low measured absolute CPICH Ec/No is enabled, the RNC starts the inter-frequency or GSM measurement in compressed mode when all active set cells have triggered the reporting event 1F for CPICH Ec/No.

The RNC cancels the event 1F of an active set cell if the CPICH Ec/No measurement result of the active set cell becomes better than or equal to the threshold HHoEcNoCancel and the UE transmits the corresponding event 1E triggered Measurement Report to the RNC.

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Note that once the RNC has started the inter-frequency or inter-RAT (GSM) measurement for the purpose of hard handover due to low measured absolute CPICH Ec/No, the RNC does not break off the ongoing measurement, even if one or more active set cells trigger the

reporting event 1E for CPICH Ec/No.

Rec : -11dB ==> RT, -12dB ==> NRT, -15dB ==> HSDPA

MaxActiveSetSize : This parameter determines the maximum number of cells which can participate in a soft/softer handover.

Reporting deactivation threshold indicates the maximum number of cells allowed in the active set in order for the event 1A to trigger. The RNC calculates the deactivation threshold from the parameter MaxActiveSetSize: Reporting Deactivation Threshold = MaxActiveSetSize - 1

Reporting Deactivation Threshold parameter is part of System Information Block 11/12. Replacement activation threshold information element indicates the minimum number of cells allowed in the active set in order for the event 1C to trigger. The threshold equals to the maximum size of the active set which is controlled with the parameter

MaxActiveSetSize.

Replacement Activation Threshold parameter is part of System Information Block 11/12.

Def : 3

HHoEcNoCancelTime : If the inter-frequency or inter-RAT (GSM) handover caused by low measured absolute CPICH Ec/No is enabled, the RNC starts the inter-frequency or GSM measurement in compressed mode when all active set cells have triggered the reporting event 1F for CPICH Ec/No.

The RNC cancels the event 1F of an active set cell if the CPICH Ec/No measurement result of the active set cell becomes better than or equal to the threshold HHoEcNoCancel and the UE transmits the corresponding event 1E triggered Measurement Report to the RNC.

The parameter HHoEcNoCancelTime determines the time period during which the CPICH Ec/No of the active set cell must stay better than the threshold HHoEcNoCancel before the UE can trigger the reporting event 1E.

Note that once the RNC has started the inter-frequency or inter-RAT (GSM) measurement for the purpose of hard handover due to low measured absolute CPICH Ec/No, the RNC does not break off the ongoing measurement, even if one or more active set cells trigger the

reporting event 1E for CPICH Ec/No.

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ReplacementReportingInterval: When the number of cells in the active set has reached the maximum, and a monitored cell becomes better than an active set cell, the UE transmits a Measurement Report to the RNC in order to replace the active cell with the monitored cell (event 1C).

If the RNC is not able to replace the active cell with the monitored cell, the UE continues reporting after the initial report by reverting to periodical measurement reporting. The parameter Replacement Reporting Interval determines the interval of periodical

measurement reports when such reporting is triggered by the event 1C.

Def : 2 (0.5s)

HHoEcNoThreshold : If the inter-frequency or inter-RAT (GSM) handover caused by low measured absolute CPICH Ec/No is enabled, the UE transmits an event 1F triggered

measurement report to the RNC when the CPICH Ec/No measurement result of an active set cell becomes worse than or equal to an absolute CPICH Ec/No threshold.

The parameter HHoEcNoThreshold determines the absolute CPICH Ec/No threshold which is used by the UE to trigger the reporting event 1F. When the measured CPICH Ec/No of all active set cells has become worse than or equal to the threshold in question, the RNC starts inter-frequency or inter-RAT (GSM) measurements in compressed mode for the purpose of hard handover.

Rec : -14dB ==> RT, -15dB ==> NRT, -18dB ==> HSDPA

ReplacementTime : When the number of cells in the active set has reached the maximum, and a monitored cell enters the reporting range (replacement window), the monitored cell must continuously stay within the reporting range for a given period of time before the UE can send a Measurement Report to the RNC in order to replace an active set cell with the monitored cell (event 1C). The length of this period is controlled by the parameter

Replacement Time.

Def : 320 ms (11)

HHoEcNoTimeHysteresis : If the inter-frequency or inter-RAT (GSM) handover caused by low measured absolute CPICH Ec/No is enabled, the UE transmits an event 1F triggered

measurement report to the RNC when the CPICH Ec/No measurement result of an active set cell becomes worse than the threshold HHoEcNoThreshold.

The parameter HHoEcNoTimeHysteresis determines the time period during which the CPICH Ec/No of the active set cell must stay worse than the threshold HHoEcNoThreshold before the UE can trigger the reporting event 1F. When the measured CPICH Ec/No of all active set cells has become worse than the threshold in question, the RNC starts inter-frequency or inter-RAT (GSM) measurements in compressed mode for the purpose of hard handover.

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ReplacementWindow : When the number of cells in the active set has reached the

maximum specified by the parameter MaxActiveSetSize and a monitored cell becomes better than an active set cell, the UE transmits a Measurement Report to the RNC in order to

replace the active cell with the monitored cell (event 1C). The parameter Replacement Window determines the margin by which the CPICH Ec/No measurement result of the monitored cell (MNew) must exceed the CPICH Ec/No measurement result of the an active set cell (MInAS) before the UE can send the event 1C triggered Measurement Report to the RNC:

MNew >= MInAs + ReplacementWindow / 2

Def : 4 (2dB)

HHoRscpCancel : If the inter-frequency or inter-RAT (GSM) handover caused by low measured absolute CPICH RSCP is enabled, the RNC starts the inter-frequency or GSM measurement in compressed mode when all active set cells have triggered the reporting event 1F for CPICH RSCP. The RNC cancels the event 1F of an active set cell, if the CPICH RSCP measurement result of the active set cell becomes better than or equal to the threshold HHoRscpCancel and the UE transmits the corresponding event 1E triggered measurement report to the RNC.

Note, that once the RNC has started the inter-frequency or inter-RAT (GSM) measurement for the purpose of hard handover due to low measured absolute CPICH RSCP, the RNC does not break off the ongoing measurement, even if one or more active set cells trigger the reporting event 1E for CPICH RSCP.

Rec : -102dBm ==> RT, -105dBm ==> NRT, -105dBm ==> HSDPA

HHoRscpCancelTime : If the inter-frequency or inter-RAT (GSM) handover caused by low measured absolute CPICH RSCP is enabled, the RNC starts the inter-frequency or GSM measurement in compressed mode when all active set cells have triggered the reporting event 1F for CPICH RSCP. The RNC cancels the event 1F of an active set cell, if the CPICH RSCP measurement result of the active set cell becomes better than or equal to the threshold HHoRscpCancel and the UE transmits the corresponding event 1E triggered measurement report to the RNC.

The parameter HHoRscpCancelTime determines the time period during which the CPICH RSCP of the active set cell must stay better than the threshold HHoRscpCancel before the UE can trigger the reporting event 1E.

Note, that once the RNC has started the inter-frequency or inter-RAT (GSM) measurement for the purpose of hard handover due to low measured absolute CPICH RSCP, the RNC does not break off the ongoing measurement, even if one or more active set cells trigger the reporting event 1E for CPICH RSCP.

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HHoRscpFilterCoefficient : In the CELL_DCH state the UE physical layer measurement period for intra-frequency CPICH RSCP measurements is 200 ms. The Filter Coefficient parameter controls the higher layer filtering of physical layer CPICH RSCP measurements before the event evaluation and measurement reporting is performed by the UE.

The CPICH RSCP measurement reports can be used to trigger off inter-frequency or inter-RAT (GSM) measurements for the purpose of hard handover.

Def : 200 ms (0)

HHoRscpThreshold : If the inter-frequency or inter-RAT (GSM) handover caused by a low measured CPICH RSCP is enabled, the UE transmits an event 1F triggered measurement report to the RNC when the CPICH RSCP measurement result of an active set cell becomes worse than or equal to an absolute CPICH RSCP threshold.

The parameter HHoRscpThreshold determines the absolute CPICH RSCP threshold which is used by the UE to trigger the reporting event 1F. When the measured CPICH RSCP of all active set cells has become worse than or equal to the threshold in question, the RNC starts inter-frequency or inter-RAT (GSM) measurements in compressed mode for the purpose of hard handover.

Rec : -105dBm ==> RT, -110dBm ==> NRT, -110dBm ==> HSDPA

HHoRscpTimeHysteresis : If the inter-frequency or inter-RAT (GSM) handover caused by low measured CPICH RSCP is enabled, the UE transmits an event 1F triggered measurement report to the RNC when the CPICH RSCP measurement result of an active set cell becomes worse than the threshold HHoRscpThreshold.

The parameter HHoRscpTimeHysteresis determines the time period during which the CPICH RSCP of the active set cell must stay worse than the threshold HHoRscpThreshold before the UE can trigger the reporting event 1F. When the measured CPICH RSCP of all active set cells has become worse than the threshold in question, the RNC starts frequency or inter-RAT (GSM) measurements in compressed mode for the purpose of hard handover.

Rec : (6) 100 ms ==> RT, (6) 100 ms ==> NRT, (6) 100 ms ==> HSDPA

DropReportingInterval : When an active cell enters the reporting range and triggers event 1B (cell deletion), the UE transmits a Measurement Report to the RNC. If the RNC is not able to remove the active cell from the active set, the UE continues reporting after the initial report by reverting to periodical measurement reporting.

The parameter Drop Reporting Interval determines the interval between periodical

measurement reports when such reporting is triggered by the event 1B. This parameter is part of System Information Block 11/12.

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HOPS Parameter

EcNoAveragingWindow : This parameter determines the number of event triggered periodic intra-frequency measurement reports from which the RNC calculates the averaged CPICH Ec/No values.|Def : 8

EnableInterRNCsho : Parameter indicates whether the neighbouring cell can participate in a soft handover, if it is controlled by a RNC other than the local RNC.|Range : No (0) Yes (1).|Def:Yes (1)

EnableRRCRelease : When the intra-frequency neighbour cell in question enters the

reporting range and triggers either event 1A (cell addition) or event 1C (cell replacement), the UE shall transmit a Measurement Report to the RNC in order to add the neighbouring cell to the active set. If the RNC is not able to add the neighbouring cell to the active set, the parameter Enable RRC Connection Release indicates whether a RRC connection release (excluding emergency calls) is required in order to avoid excessive uplink interference due to non-optimum fast closed loop power control.|Range :No (0) Yes (1). |Rec: No ==> RT, No ==> NRT, Yes ==> HSDPA

HHOMarginAverageEcNo : This parameter determines the maximum allowed difference between the averaged CPICH Ec/No of the neighbouring cell and the averaged CPICH Ec/No of the best active cell in situations when an inter-RNC soft handover is not possible between these cells. If the difference between the averaged CPICH Ec/No values exceeds the value of the parameter, the RNC performs an intra-frequency hard handover in order to avoid

excessive uplink interference due to non-optimum fast closed loop power control.|Def: 10

HHOMarginPeakEcNo : This parameter determines the maximum allowed difference

between the CPICH Ec/No of the neighbour cell and the CPICH Ec/No of the best active cell in situations when an inter-RNC soft handover is not possible between these cells. If the difference in CPICH Ec/No values exceeds the value of the parameter, the RNC performs an intra-frequency hard handover in order to avoid excessive uplink interference due to non-optimum fast closed loop power control.|Def : 4

AdjsHCSpriority : Defines the priority level of the neighbouring cell in the hierarchical cell re-selection procedure. 0 indicates the lowest HCS priority and 7 indicates the highest HCS priority. Lower HCS priority values are meant for larger macro cells and higher HCS priority values are meant for smaller pico/micro cells.| Def : 0

AdjsHCSthreshold : Defines the threshold level which must be exceeded by the CPICH Ec/No of the neighbouring cell before the hierarchical cell re-selection becomes possible.|Def : 0

AdjsPenaltyTime : Defines the time period during which the Temporary Offset 1/2 is applied in the cell re-selection procedure for the neighbour cell in question.|Def : 0

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AdjsQoffset1 : This parameter is used in the cell re-selection and ranking between WCDMA cells. The value of this parameter is subtracted from the measured CPICH RSCP of the neighbour cell before the UE compares the quality measure with the cell

re-selection/ranking criteria.|Def :0

AdjsQoffset2 : This parameter is used in the cell re-selection and ranking between WCDMA cells. The value of this parameter is subtracted from the measured CPICH Ec/No of the neighbour cell before the UE compares the quality measure with the cell

re-selection/ranking criteria.|Def : 0

AdjsQqualMin : Determines the minimum required CPICH Ec/No level which must be exceeded by the measurement result of the neighbouring cell before the cell re-selection becomes possible.|Def: -20

AdjsQrxlevMin : Determines the minimum required CPICH RSCP level which must be exceeded by the measurement result of the neighbouring cell before the cell re-selection becomes possible.|Def : -58

AdjsTempOffset1 : This parameter is used in the cell ranking between GSM and WCDMA cells when the neighbour cell has the same HCS priority level as the serving cell.

If the neighbour cell has a different HCS priority level, the offset value is applied for the HCS cell re-selection between GSM and WCDMA cells. The offset is subtracted (during Penalty Time) from the measured CPICH RSCP of the neighbour cell.

The alternative values are the following: 3 dB, 6 dB, 9 dB, 12 dB, 15 dB, 18 dB, 21 dB and 'Infinity'.|Def : 0

AdjsTempOffset2 : This parameter is used in the cell ranking between WCDMA cells when the neighbour cell has the same HCS priority level as the serving cell.

If the neighbour cell has a different HCS priority level, the offset value is applied for the HCS cell re-selection between WCDMA cells. The offset is subtracted (during Penalty Time) from the measured CPICH Ec/No of the neighbour cell.

The alternative values are the following: 2 dB, 3 dB, 4 dB, 6 dB, 8 dB, 10 dB, 12 dB and 'Infinity'.|Def : 0

ReleaseMarginAverageEcNo : This parameter determines the maximum allowed difference between the averaged CPICH Ec/No of the neighbouring cell and the averaged CPICH Ec/No of the best active cell in situations when the RNC is not able to perform a soft handover between these cells.

If the difference between the averaged CPICH Ec/No values exceeds the value of the parameter, the RNC releases the RRC connection in order to avoid excessive uplink

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interference due to non-optimum fast closed loop power control.|Def : 25

ReleaseMarginPeakEcNo : This parameter determines the maximum allowed difference between the CPICH Ec/No of the neighbour cell and the CPICH Ec/No of the best active cell in situations when the RNC is not able to perform a soft handover between these cells. If the difference between CPICH Ec/No values exceeds the value of the parameter, the RNC releases the RRC connection in order to avoid excessive uplink interference due to non-optimum fast closed loop power control.|Def : 7

ADJS Parameter

AdjsScrCode : The downlink scrambling code of the Primary CPICH (Common Pilot Channel) of the intra-frequency neighbour cell.

NrtHopsIdentifier : This parameter defines the parameter set (HOPS object) which controls the intra-frequency handover of a non-real time (NRT) radio bearer to the neighbouring cell. RtHopsIdentifier : This parameter defines the parameter set (HOPS object) which controls the intra-frequency handover of a real time (RT) radio bearer to the neighbouring cell. HSDPAHopsIdentifier : The parameter identifies the parameter set (HOPS object) controlling the intra-frequency handovers of a user having HS-DSCH allocated.

RTWithHSDPAHopsIdentifier : This parameter identifies the parameter set (HOPS object) controlling intra-frequency handovers of a user having HS-DSCH allocated simultaneously with AMR speech CS RAB.

AdjsDERR : This parameter indicates whether the neighbouring cell is forbidden to affect the reporting range (addition/drop window) calculation, if it belongs to the active set. | Range and Step : No (0) Yes (1) | Def : 0

AdjsEcNoOffset : The CPICH Ec/No Offset determines an offset value, which the UE adds to the CPICH Ec/No measurement result of the neighbouring cell before it compares the Ec/No value with the reporting criteria. | Default : 0 dB, -> nilai ditambah (+) berimpact attempt ke neighbor tersebut bertambah

AdjsTxDiv : This parameter indicates whether the Primary CPICH of the intra-frequency neighbour cell is broadcast from two antennas. If the Primary CPICH is broadcast from two antennas, the UE measures the received code power from each antenna separately and sums the measurement results together in order to get the total received code power on the Primary CPICH. | Range and Step : Tx Diversity not used (0), Tx Diversity in use (1) | Def : 0

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AdjsTxPwrRACH : This parameter indicates the maximum transmission power level that a UE can use when accessing the neighbouring cell on the RACH. The UE uses the parameter in the cell re-selection procedure. If the maximum output power of the UE is lower than the value of the parameter, the UE adds the power difference (dB value) to the minimum required CPICH Ec/No level, which the measurement result of the neighbouring cell must exceed before the cell re-selection is possible. | Def : 21

AdjsCPICHTxPwr : This parameter indicates the transmission power level of the Primary CPICH (Common Pilot Channel) of the intra-frequency neighbour cell. | Def : 330

AdjsSIB : The parameter indicates whether the intra-frequency neighbour cell is included in the System Information Block 11&12&18 for the cell selection and re-selection procedures. The intra-frequency neighbour cell is included in the system information when the value of the parameter is "SIB".

The intra-frequency neighbour cell is included in the extended system information when the value of the parameter is "SIBbis".

The total number of intra-frequency, inter-frequency and GSM neighbour cells, which can be included in the System Information Block type 11 (SIB11), is 47. When HCS is used, the

capacity is limited to 35 cells.

System Information Block type 11bis (SIB11bis) increases the maximum number of

adjacencies to 96. SIB11bis can only be decoded by the UEs which support 3GPP R6. If the total number of intra-frequency, inter-frequency and GSM neighbour cells, which are included in the System Information, exceeds the physical size of SIB data, the NBAP interface is not able to pack the neighbour cell information into the SIB data and the scheduling of the system information blocks fails.

The cell is blocked by the system and an alarm 7771 WCDMA CELL OUT OF USE (BCCH scheduling error) is reported for the cell.

Note: The parameter AdjsSIB does not affect intra-frequency measurements in CELL_DCH state of connected mode. That is, all intra-frequency neighbour cells are monitored for the soft(er) handover regardless of the value of the parameter AdjsSIB.

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3G HO Basic reporting events

Intra frequency events

1A: Primary CPICH enters the reporting range (Ncell addition), If active set of UE is full, UE stops reporting 1A event

1B: P-CPICH leaves the reporting range (Ncell deletion)

1C: Non-active P-CPICH becomes better than an active PCPICH 1D: Change of current best cell with new P-CPICH

1E : The measurement value of a primary pilot channel exceeds the absolute threshold 1F : The measurement value of a primary pilot channel is lower than the absolute threshold Inter frequency events

2A : The best frequency changes

2B : The quality of the current cell frequency is lower than a certain threshold, but that of the non-used frequency is higher than a certain threshold

2C : The estimated quality of the non-used frequency is higher than a certain threshold 2D : The estimated quality of the used frequency is lower than a certain threshold 2E : The estimated quality of the non-used frequency is lower than a certain threshold 2F : The estimated quality of the used frequency is higher than a certain threshold Inter system events

3A: The estimated quality value of the used UTRAN frequency is lower than a certain threshold, and that of the other system is higher than a certain threshold

3B : The estimated quality value of the other system is lower than a certain threshold 3C : The estimated quality value of the other system is higher than a certain threshold 3D : The best cell in the other system changes

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3G Handover Types

Intra-Frequency Handovers

1. Softer Handover

 Handover between sectors of the same Node B (handled by BTS)

 No extra transmissions across Iub interface

 Maximum Ratio Combining (MRC) is occurring in both the UL & DL 2. Soft Handover

 UE simultaneously connected to multiple cells (from different Node Bs)

 Extra transmission across Iub, more channel cards are needed (compared to non-SHO)

 Mobile Evaluated Handover (MEHO)

 DL/UE: MRC & UL/RNC: Frame selection combining 3. Hard Handover

 Arises when inter-RNC SHO is not possible (Iur not supported or Iur congestion

 Decision procedure is the same as SHO (MEHO and RNC controlled)

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Inter-Frequency Handover

 Can be intra-BS, intra-RNC, inter-RNC

 Network Evaluated Handover (NEHO)

 Decision algorithm located in RNC Inter-RAT Handover

Handovers between WCDMA and GSM (NEHO) or GAN (WLAN)

RRC connection request

If admission control rejects the RRC connection request, the RNC sends the RRC: RRC Connection Reject message to the UE. The message includes mandatory IE Wait time. The user equipment waits at least the time stated in the parameter before sending a new RRC: RRC Connection Request message. The value of the Wait time is defined with the Wait time in RRC connection request rejection (WaitTimeRRC) management parameter

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How to avoid ping pong (3G - GSM)

When UE is camped on 3G -> GSM measurements start when CPICH Ec/Io of serving cell is below Ssearch_RAT + QqualMin

When UE is camped on GSM -> cell reselection to 3G is possible if CPICH Ec/Io of the candidate is above FDD_Qmin

FDD_Qmin >= QqualMin+Ssearch_RAT

2G -> 3G Cell Re / Selection

QsearchI (A_BTS)

With this parameter you define the threshold for dual mode mobiles in idle state to search for and to measure UTRAN neighbour cells introduced in 3G Cell Reselection list when a running average of the received downlink signal level (RLA_C) of the serving cell is below (0-7) or above (8-15) the threshold. This parameter is broadcast only on BCCH.

If the parameter value is 7, dual mode mobiles in idle state measure always neighbour UTRAN cell(s). If the parameter value is 15, dual mode mobiles in idle state do not measure any of the neighbour UTRAN cells.

GPRS-capable mobiles do not use this parameter if NCCR is active in the serving cell QsearchP (A_BTS)

With this parameter you define the threshold for GPRS capable dual mode mobiles to search for and to measure UTRAN neighbour cells introduced in 3G Cell Reselection list when a running average of the received downlink signal level (RLA_C) of the serving cell is below (0-7) or above (8-15) the threshold.

This parameter is broadcast on BCCH.

In case this parameter is broadcast on BCCH it shall be used only if GPRS cell re-selection parameters for one or more cells are sent to the MS in a Packet Cell Change Order or Packet Measurement Order message

If the parameter value is 7, GPRS-capable multi-RAT MSs measure always neighbour UTRAN cell(s). If the parameter value is 15, GPRS-capable multi-RAT MSs do not measure any of neighbour UTRAN cells.

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GPRS-capable mobiles use this parameter only if NCCR is active in the serving cell fddQOffset (A_BTS)

With this parameter you define a UTRAN cell reselection offset for non-GPRS capable dual mode mobiles which are in the idle state.

The mobiles add the offset to the running average (RLA_C) of the received signal level of the serving GSM cell and non-serving GSM cells. After that the mobiles compare the measured RSCP values of UTRAN cells with signal levels of the GSM cells.

-32 db = minus infinity dB range: -28..28 dB, step 4 dB FDD_GPRS_Offset

FDDQmin (A_BTS)

This parameter defines a minimum Ec/Io threshold which must be exceeded before a non-GPRS capable dual mode mobile is allowed to make a reselection from the serving GSM cell to an adjacent WCDMA RAN cell that is using frequency division duplex (FDD) type access technology/mode

FDD_REP_QUANT

defines the reporting quantity for UTRAN cell 3G_Search_PRIO

Is used to inidicate to the MS if 3G cells can be looked for when BSIC decoding is required. (0=no, 1=yes, default: 1)

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3G --> 2G Cell Re / selection

Cell Re / selection Criteria S di define sbb :

Squal = Qqualmeas – Qqualmin

Srxlev = Qrxlevmeas - Qrxlevmin - Pcompensation

where :

Squal : Cell Selection quality (dB)

Qqualmeas : Measured cell quality value

Qqualmin : Minimum required quality level in the cell (dB) Srxlev : Cell Selection RX level value (dB)

Qrxlevmeas : Measured cell RX level value

Qrxlevmin : Minimum required RX level in the cell (dBm) Pcompensation : max(UE_TXPWR_MAX_RACH – P_MAX, 0) in dB

"UE_TXPWR_MAX_RACH" : Maximum TX power level an UE may use when accessing the cell on RACH (dBm)

P_MAX : Maximum RF output power of the UE (dBm) Cell Re / selection Criteria S akan terpenuhi jika :

Squal > 0 Srxlev > 0

Asumsi tidak menggunakan HCS maka :

If Squal > Sintrasearch, UE need not perform intra-frequency measurements If Squal <= Sintrasearch, perform intra-frequency measurements

If Squal > Sintersearch, UE need not perform inter-frequency measurement If Squal <= Sintersearch, perform inter-frequency measurements

If Squal > SsearchRAT m, UE need not perform measurements on cells of RAT "m" If Squal <= SsearchRAT m, perform measurements on cells of RAT "m"

ex :

Sintrasearch = 4 dB: Equate to –16dB Ec/No Sintersearch = 2 dB: Equate to –18dB Ec/No SsearchRAT m, = 0dB: Equate to –20dB Ec/No

Parameter untuk Cell Re/Selection 3G --> 2G adalah :

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NCr : Defines the maximum number of cell reselections (def:8) (A_WCEL)

QHCS : Quality threshold level for applying prioritised hierarchical cell re-selection for a cell (def:WCDMA : -24) (A_WCEL)

Qhyst1 : Qhyst1 is used for TDD and GSM cells, and for FDD cells when cell selection and re-selection quality measure is set to CPICH RSCP (def:4) (A_WCEL)

Qhyst2 : Qhyst2 is used for FDD cells when cell selection and re-selection quality measure is set to CPICH Ec/No (def:4) (A_WCEL)

QqualMin : The minimum required quality level in the cell (Ec/No) (def:-20) (A_WCEL)

QrxlevMin : The minimum required RX level in the cell (def: WCDMA 115, GSM -105) (A_WCEL)

SHCS_RAT : The RAT specific threshold for inter-RAT measurement rules (def:1) (A_WCEL)

Sintersearch : The threshold for inter-frequency measurements, and for the HCS measurement rules (def:2)(A_WCEL)

Sintrasearch : The threshold for intra-frequency measurements, and for the HCS measurement rules (def:4)(A_WCEL)

Slimit_SearchRAT : Threshold for skipping inter-RAT measurement rules in HCS (def:2) (A_WCEL)

Ssearch_RAT : The RAT-specific threshold for inter-RAT measurement rules (def:0) (A_WCEL)

SsearchHCS : Threshold for intra- and interfrequency measurement rules in HCS (def:1) (A_WCEL)

TCrmax : The duration for evaluating the allowed amount of cell reselections (def:60sec) (A_WCEL)

TCrmaxHyst : Cell reselection hysteresis for reverting from UE high-mobility measurements (def:0sec)(A_WCEL)

Treselection : The UE triggers the reselection of a new cell if the cell reselection criteria are fulfilled during the time interval Treselection (def:0) (A_WCEL)

UseOfHCS : Indicates whether the serving cell belongs to a Hierarchical Cell Structure (HCS), or not (def:0)(A_WCEL)

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RAB setup failures for CS voice calls

RAB SETUP FAILURES DUE TO AC FOR CS VOICE

NetAct name: RAB_STP_FAIL_CS_VOICE_AC

Description: The number of RAB setup failures caused by admission control for CS voice. When the RNC decides to reject the CS voice RAB request because the admission control entity reports a failure (excluding frozen BTS reason). This happens before the RRC: RADIO BEARER SETUP message would be sent to the UE

RAB SETUP FAILURES DUE TO BTS FOR CS VOICE

NetAct name: RAB_STP_FAIL_CS_VOICE_BTS

Description: The number of RAB setup failures caused by BTS for CS voice.

When the RAB assignment fails due to radio link setup or reconfiguration failure. The failure can happen either in the Iub or in the Iur interface.

RAB SETUP FAILURES DUE TO TRANSPORT FOR CS VOICE

NetAct name: RAB_STP_FAIL_CS_VOICE_TRANS

3G Optimisation Cookbook_v2