3gnets sample test

1 LTE Architecture - 3G Network Solutions

LTE Sample Conformance Tests

3GNetwork Solutions [email protected] +91 9886212362 or +91 80 40932221

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3GPP Conformance Test

• These sample tests show some of the selected test cases out of 36.523.

• The 3GNets team can provide similarly all the test cases in real live network & LAB.

• The tests results will show if the functioal tests are pass/fail and performance of the Handset and/or Network at various L1, L2, L3 modules in AS and NAS.

• The report here shows some tests how the Huawei LTE data card has fared in Airtel’s LTE rel-9 Network.

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Samples of Conformance Tests 36.523..1

6.1.2.4.1 (Cell Re-Selection)- UE in E-UTRA RRC_IDLE. When UE detects the cell ranked as the best cell - then { UE reselects the new cell }

8.1.1.1.1 (Paging)- when UE receives Paging with an ue-Identity set to S-TMSI which was allocated to the UE at the UE registration procedure -then { UE establishes an RRC connection }

8.1.3.6.1 (Redirection)- UE in E-UTRA RRC_CONNECTED. When { UE receives RRCConnectionRelease including redirectionInformation with utra-CarrierFreq UTRA frequency - then {UE enters RRC_IDLE on UTRA frequency included in IE redirectionInformation }

8.2.1.7.1 (SRB2 establishment)- UE in E-UTRA RRC_CONNECTED without SRB2 & NW sends RRCConnectionReconfiguration including SRB2 configuration - then { UE successfully establish the signalling radio bearer }

2

Samples of Conformance Tests 36.523..2

8.2.2.2.1 (SRB reconfig)-UE in E-UTRA RRC_CONNECTED. When UE receives RRCConnectionReconfiguration containing SRB reconfiguration - then { UE reconfigures affected SRBs and sends RCConnectionReconfigurationComplete}

8.2.4.1.1 (Handover with RachConfig) - UE having completed radio bearer establishment and initial security activation & performed intra frequency measurement. when UE receives an RRCConnectionReconfiguration including a mobilityControlInfo with a rach-ConfigDedicated - then { UE transmits an RRCConnectionReconfigurationComplete message }

8.3.1.5 (A3 Meas Report)- UE in E-UTRA RRC_CONNECTED & configured for A3. When { Neighbour becomes offset better than serving } - then { UE sends MeasurementReport with measId for event A3 }.

8.5.1.4 (RLF & TAU) - UE in E-UTRA RRC_CONNECTED with default bearer established and radio link failure was detected and UE initiates re-establishment. When UE receives a RRCConnectionReestablishmentReject - then { UE goes to RRC_IDLE and trigger TAU procedure in order to recover RRC connection }

3

6.1.2.4.1-Cell Reselection

With { UE in E-UTRA RRC_IDLE state }

ensure that

{ when { UE detects the cell ranked as the best cell }

then { UE reselects the new cell }

Neighbour Ranking Evaluation

Q meas,s

Averaged RSRP value

Q offset For intra-freq: Equals to Qoffsets,n, if Qoffsets,n is valid, otherwise zero. For inter-freq: Equals to Qoffsets,n + Qoffsetfreq if Qoffsets,n is valid, otherwise only Qoffsetfreq

Cell selection criteria Srxlev > 0

SIB3 Cell Reselection Parameters Layer 3 message Message content

Serving and Neighbour Cell Measurement

Neighbour Cell Ranking Better Final Analysis

Cell selection criteria Srxlev >0

Serving cell measurements Rs=Qmeas,s + Qhyst -110dbm + 4 = -106dbm

Neighboring cell measurements

Rn = Qmeas, n – Qoffset Cell1(id- 385, Srxlev=23) = -104.25dbm Cell 2(id-0, srxlev =-18 ) = 8.5dbm Cell3 (id-511, srxlev=-26) = -180.0dbm

Only cell1 qualifies as the candidate cell with S>0 and also its ranking greater than the serving cell.

Hence finally UE camps on cell1 with cell id 385 and that becomes the serving cell

Cell Reselection Latency

Latency

Mode reports HW Timestamp

Serving Cell Measurements and Evaluation

(38731496.25 ms) 10:45:31.496

Idle Neighbor Cell Measurement Request/Response

(38731503.75 ms) 10:45:31.504

Neighbor Measurements (38731503.75 ms) 10:45:31.504

Reselection Candidates Log Packet

(38731503.75 ms) 10:45:31.504

PBCH Decoding Results (38731518.75 ms) 10:45:31.519

8.1.1.1.1 - Paging

with { UE in E-UTRA RRC_IDLE state }

ensure that

{ when { UE receives a Paging message including an ue-Identity set to the S-TMSI which was allocated to the UE at the UE registration procedure }

then { UE establishes an RRC connection } }

10 Paging- 3G Network Solutions

Paging Testing Pass/Fail

St Procedure Message Sequence TP Verdict

U - S Message

1 The SS transmits a Paging message including an

unmatched identity (incorrect S-TMSI).

<-- Paging - -

2 Check: Does the UE transmit an

RRCConnectionRequest message within 5 s?

--> RRCConnectionRequest 1 F

3 The SS transmits a Paging message including a

matched identity.

<-- Paging - -


RRCConnectionRequest message?

--> RRCConnectionRequest 2 P

5 The SS transmits an RRCConnectionSetup

message.

<-- RRCConnectionSetup - -


RRCConnectionSetupComplete message

including SERVICE REQUEST to confirm the

successful completion of the connection

establishment?

--> RRCConnectionSetupComplete 2 P

6A-6D Steps 6 to 9 of the generic radio bearer

establishment procedure (TS 36.508 4.5.3.3-1) are

executed to successfully complete the service

request procedure.

- - - -

7 Check: Does the test result of generic test

procedure in TS 36.508 subclause 6.4.2.3 indicate

that the UE is in E-UTRA RRC_CONNECTED

state on Cell 1?

- - 1, 2 -

Paging Message

From SIB2 -> t300 = ms200 Start T300 at Connection Request Connection Setup comes much within T300 within 40ms.

200 ms

T300 =200ms

start

stop

T300 =200ms

start

stop

Paging – PCCH - 10:56:54.460 Service Request- 10:56:54.461 Connection Req- UL-CCCH 10:56:54.461 Connection Setup DL-CCCH 10:56:54.496 Setup Complete UL-DCCH- 10:56:54.500 Security ModCmd DL-DCCH- 10:56:54.526 Sec Mode Comp UL-DCCH- 10:56:54.526 Con Reconfif DL-DCCH- 10:56:54.526 ConReconfComp UL-DCCH 10:56:54.529 Con Reconfif DL-DCCH- 10:56:54.546 ConReconfComp UL-DCCH 10:56:54.548 Con Release DL-DCCH 10:57:16.541

40ms

29ms

From SIB2 Message -> T300 = ms200 Start T300 when Connection Request is sent eNB Stops once Connection Setup comes from eNB

8.1.3.6.1 RRC release with redirection

with { UE in E-UTRA RRC_CONNECTED state } ensure that { when { UE receives an RRCConnectionRelease message including an IE redirectionInformation with utra-CarrierFreq UTRA frequency } then {sUE enters RRC_IDLE tate on UTRA frequency included in IE redirectionInformation }

E-RRC release Message Sequence


U - S Message

1 SS transmits an RRCConnectionRelease

message (IE redirectionInformation including

UTRA-CarrierFreq of Cell 5).

<-- RRCConnectionRelease - -

2 Check: Does the test result of generic test

procedure in TS 36.508 subclause 6.4.2.8

indicate that the UE is camped on UTRAN

Cell 5?

- - 1 P

Message Latency

RRC Connection Setup Complete (UL-DCCH) HW Timestamp : (22099170.00 ms) 06:08:19.170

RRC Connection Release (DL-DCCH) HW Timestamp : (22102131.25 ms) 06:08:22.131

Release with Redirection to UTRAN Pass/Fail

RRC Connection Setup Complete (UL-DCCH) Time : 11:38:19.157

Length : 123

Log Code (Hex) : 0xB0C0

HW Timestamp : (22099170.00 ms) 06:08:19.170

1.25 ms fraction : 0.00

CFN : 68

1.25 ms counter : 833950479336

RRC Signaling Header

Log Packet Version : 2

RRC Release Number : 9.5.0

Radio Bearer Id : 1

Physical Cell Id : 20

E-ARFCN : 39000

System Frame Number

System frame number : N/A

Sub frame number : N/A

Message Type : DcchUplink

Message Length : 98

rrc-TransactionIdentifier : 1

criticalExtensions : c1

c1 : rrcConnectionSetupComplete-r8

rrcConnectionSetupComplete-r8

selectedPLMN-Identity : 1

registeredMME

mmegi : 1000010110000110

mmec

MMEC : (0x90) : 144

dedicatedInfoNAS

Protocol Discriminator : 7 (EMM)

Message Type : Attach Request

RRC Connection Release (DL-DCCH) Time : 11:38:22.008

Length : 30


HW Timestamp : (22102131.25 ms) 06:08:22.131


CFN : 104

1.25 ms counter : 833950481705




Radio Bearer Id : 1


E-ARFCN : 39000

System Frame Number



Message Type : DcchDownlink

Message Length : 5


criticalExtensions : c1

c1 : rrcConnectionRelease-r8

rrcConnectionRelease-r8

releaseCause : other

redirectedCarrierInfo

RedirectedCarrierInfo : utra-FDD

utra-FDD : 10833

Setup Complete and Release

8.2.1.7.1- RRC reconfig for SRB2


with { UE in E-UTRA RRC_CONNECTED state without SRB2}

ensure that {

when { SS sends an RRCConnectionReconfiguration message including SRB2

configuration }

then { UE successfully establish the signalling radio bearer }

RRCConnectionReconfigComplete

RRC reconfig message

RRC Connection Reconfiguration (DL-DCCH) HW Timestamp : (40993461.25 ms) 11:23:13.461 RRC Signaling Header Radio Bearer Id : 1 Physical Cell Id : 20

E-ARFCN : 39000 rrc-TransactionIdentifier : 1 criticalExtensions : c1 c1 : rrcConnectionReconfiguration-r8 rrcConnectionReconfiguration-r8 radioResourceConfigDedicated srb-ToAddModList SRB-ToAddModList : [0 ] :

srb-Identity : 2

rlc-Config : explicitValue

explicitValue

RLC-Config : am

ul-AM-RLC

t-PollRetransmit : ms45

pollPDU : pInfinity

pollByte : kBinfinity

maxRetxThreshold : t32

dl-AM-RLC

t-Reordering : ms35

t-StatusProhibit : ms0

logicalChannelConfig : explicitValue

explicitValue

priority : 3

prioritisedBitRate : infinity

bucketSizeDuration : ms300

logicalChannelGroup : 0

RRCConnectionReconfig message

SRB2 Parameters

RRC Connection Reconfiguration Complete (UL-DCCH) Time : 16:53:10.049

Vendor Header

Length : 27


HW Timestamp : (40993463.75 ms) 11:23:13.464


CFN : 124

1.25 ms counter : 833896474771




Radio Bearer Id : 1


E-ARFCN : 39000

System Frame Number



Message Type : DcchUplink

Message Length : 2


criticalExtensions : rrcConnectionReconfigurationComplete-r8

rrcConnectionReconfigurationComplete-r8

Message dump (Hex):

12 00

RRCConnectionReconfigComplete

RRC Connection Setup (DL-CCCH)

HW Timestamp : (40993188.75 ms) 11:23:13.189

RRC Connection Setup Complete (UL-DCCH)

HW Timestamp : (40993192.50 ms) 11:23:13.192

RRC Connection Reconfiguration (DL-DCCH)

HW Timestamp : (40993461.25 ms) 11:23:13.461

RRC Connection Reconfiguration Complete (UL-DCCH)

HW Timestamp : (40993463.75 ms) 11:23:13.464

269 ms

43 ms

RRCConnectionReconfig Latency

with { UE in E-UTRA RRC_CONNECTED state} ensure that {

when { UE receives an RRCConnectionReconfiguration message containing SRB reconfiguration }

then { UE reconfigures affected SRBs and sends RCConnectionReconfigurationComplete message }

8.2.2.2.1-SRB Reconfiguration


U - S Message

1 The SS transmits an

RRConnectionReconfiguration

message containing a

radioResourceConfigDedicated

with SRB reconfiguration.

<-- RRCConnectionReconfigur

ation

- -


RRCConnectionReconfigurationCo

mplete message?

--> RRCConnectionReconfigur

ationComplete

1 P

3 SS transmits

RRCConnectionReconfiguration

message containing a

radioResourceConfigDedicated

with DRB reconfiguration.

<-- RRCConnectionReconfigur

ation

- -


RRCConnectionReconfigurationCo

mplete message?

--> RRCConnectionReconfigur

ationComplete

2 P

SRB Reconfig Behaviour

L3 Message Details

pdcp-Config discardTimer : ms1500

ul-AM-RLC t-PollRetransmit : ms40

dl-AM-RLC t-Reordering : ms50 t-StatusProhibit : ms50

mac-MainConfig : explicitValue periodicBSR-Timer : sf10 retxBSR-Timer : sf320

SRB Reconfig Parameters

with { UE having completed the radio bearer establishment and initial security activation procedure and performed the intra frequency measurement} ensure that { when { UE receives an RRCConnectionReconfiguration message including a mobilityControlInfo with a rach-ConfigDedicated } then { UE transmits an RRCConnectionReconfigurationComplete message }

8.2.4.1.1 -Handover with RACH-ConfigDedicated


U - S Message


RRCConnectionReconfiguration message to order

the UE to perform intra frequency handover to Cell

4.

<-- RRCConnectionReconfiguration - -


RRCConnectionReconfigurationComplete

message on Cell 4 using dedicated preamble to

confirm the successful completion of the intra

frequency handover?

Check2: Does the UE transmit an

RRCConnectionReconfigurationComplete using

the security key derived from the currently active

KeNB?

--> RRCConnectionReconfigurationCo

mplete

1,3 P

3 The SS changes Cell 1, Cell 4 and Cell 11

parameters so that Cell1 becomes better.

- - - -

4 The UE transmits a MeasurementReport message

to report event A3 on Cell 4 with the measured

RSRP, RSRQ value for Cell 1.

--> MeasurementReport - -


RRCConnectionReconfiguration message to order

the UE to perform intra frequency handover to Cell

1.



RRCConnectionReconfigurationComplete

message on Cell 1 using dedicated preamble to

confirm the successful completion of the intra

frequency handover?

Check2: Does the UE transmit an

RRCConnectionReconfigurationComplete using

the security key derived from the

nextHopChainingCount?

--> RRCConnectionReconfigurationCo

mplete

1,2 P

Handover Sequence to be tested


Time : 16:07:06.416 Vendor Header Length : 27 Log Code (Hex) : 0xB0C0 HW Timestamp : (30846460.00 ms) 08:34:06.460 1.25 ms fraction : 0.00 CFN : 68 1.25 ms counter : 833473637168 RRC Signaling Header Log Packet Version : 2 RRC Release Number : 9.5.0 Radio Bearer Id : 1 Physical Cell Id : 4 E-ARFCN : 39000 System Frame Number System frame number : N/A Sub frame number : N/A Message Type : DcchUplink Message Length : 2 rrc-TransactionIdentifier : 1 criticalExtensions : rrcConnectionReconfigurationComplete-r8 rrcConnectionReconfigurationComplete-r8

UE gets SRB Reconfig in ReConfig Msg within Radio Resource Dedicated Reconfig and sends Reconfig complete after reconfiguring affected SRB. In our case Affected SRB is SRB2. Time to reconfig was 2ms.

RRC Reconfig (DL-DCCH)= (30846457.50 ms) 08:34:06.458 RRC Reconfig Complete(UL-DCCH)= (30846460.00 ms) 08:34:06.460

MobilityControlInfo ::= SEQUENCE { targetPhysCellId PhysicalCellIdentity of Cell 1 carrierFreq Not present rach-ConfigDedicated SEQUENCE { ra-PreambleIndex 63 - ra-PRACH-MaskIndex 0 } }

Layer3 Message Details Message Table

start timer T304 with t304=500ms on Reconfig message as mobilityControlInfo is included. Our Log File contains these messages in sequence:- Measurement Report(UL-DCCH)->RRC Reconfiguration(DL-DCCH)->RRC Reconfiguration Complete(UL-DCCH). UE should send RRC Reconfig Complete msg within 500ms, but we receive it within 16ms.

Our test is pass as 16ms < 500ms.

8.3.1.5 - A3 Meas Reporting with { UE in E-UTRA RRC_CONNECTED state and measurements configured for two event A3 at the same time}

ensure that {

when { Neighbour becomes offset better than serving }

then { UE sends MeasurementReport with correct measId for event A3 }


RRC ConnectionReconfiguration HW Timestamp : 08:28:29.321

RRCConnectionReconfigurationComplete HW Timestamp : 08:28:29.322 MeasurementReport (with A3 Criteria) HW Timestamp : 08:28:31.099

A3 Based Reporting Pass/Fail


U - S Message

1 SS transmits an RRCConnectionReconfiguration message

including MeasConfig to setup intra E-UTRAN measurement

and reporting for two event A3 (measId 1 and measId 2) with

different parameters.


2 The UE transmits an RCConnectionReconfigurationComplete

message.

--> RRCConnectionReconfigurationComple

te

- -

3 Check: Does the UE transmit a MeasurementReport message

within the next 10s?

--> MeasurementReport 1 F

4 SS re-adjusts the cell-specific reference signal level according

to row "T1" in table 8.3.1.5.3.2-1.

- - - -


to report event A3 (measId 1) with the measured RSRP value

for Cell 2?

--> MeasurementReport 2 P

6 SS re-adjusts the cell-specific reference signal level according

to row "T2" in table 8.3.1.5.3.2-1.

- - - -


to report event A3 (measId 2) with the measured RSRP value

for Cell 2?

--> MeasurementReport 2 P

Parameter Unit Cell 1 (414) Cell 2 (83) Remark

T0 Cell-specific RS EPRE dBm/15k

Hz

-85 -110 Power levels are such that entry condition for event A3 (measId 1 & 2) is

not satisfied:


Hz

-85 -91 Power levels are such that entry condition for event A3 (measId 1) is

satisfied:


Hz

-85 -79 Power levels are such that entry condition for event A3 (measId 2) is

satisfied:

• On receiving the MeasConfig and ReportConfig start the timer T321=1s (default) and send reports until it expires for all the duration A3 criteria is met.

A3 Definition

Measurement Message with A3 setting

RRC Connection Reconfiguration (DL-DCCH) HW Timestamp : (30509321.25 ms) 08:28:29.321 RRC Signaling Header Physical Cell Id : 414 c1 : rrcConnectionReconfiguration-r8 rrcConnectionReconfiguration-r8 measConfig measObjectToAddModList MeasObjectToAddModList : [0 ] : measObjectId : 1 measObject : measObjectEUTRA measObjectEUTRA neighCellConfig Binary string (Bin) : 01 offsetFreq : dB0 cellsToAddModList CellsToAddModList : [0 ] : cellIndex : 1 physCellId : 414 cellIndividualOffset : dB0 reportConfigToAddModList ReportConfigToAddModList : [0 ] : reportConfigId : 1 reportConfig : reportConfigEUTRA reportConfigEUTRA triggerType : event eventId : eventA3 a3-Offset : 2 reportOnLeave : False hysteresis : 2 timeToTrigger : ms320 triggerQuantity : rsrp reportQuantity : sameAsTriggerQuantity maxReportCells : 4 reportInterval : ms240 reportAmount : infinity measIdToAddModList

A3 Event triggered


Time : 11:58:33.569 Vendor Header Length : 27 Log Code (Hex) : 0xB0C0

HW Timestamp : (30509322.50 ms) 08:28:29.322 1.25 ms fraction : 0.00 CFN : 84 1.25 ms counter : 833473367458

RRC Signaling Header Log Packet Version : 2 RRC Release Number : 9.5.0

Radio Bearer Id : 1 Physical Cell Id : 414 E-ARFCN : 39000 System Frame Number

System frame number : N/A Sub frame number : N/A Message Type : DcchUplink Message Length : 2

rrc-TransactionIdentifier : 3 criticalExtensions : rrcConnectionReconfigurationComplete-r8

rrcConnectionReconfigurationComplete-r8

Message dump (Hex): 16 00

Measurement Report (UL-DCCH) Time : 11:58:35.403 Vendor Header Length : 32 Log Code (Hex) : 0xB0C0 HW Timestamp : (30511098.75 ms) 08:28:31.099 1.25 ms fraction : 0.00 CFN : 104 1.25 ms counter : 833473368879 RRC Signaling Header Log Packet Version : 2 RRC Release Number : 9.5.0 Radio Bearer Id : 1 Physical Cell Id : 414 E-ARFCN : 39000 System Frame Number System frame number : N/A Sub frame number : N/A Message Type : DcchUplink Message Length : 7 criticalExtensions : c1 c1 : measurementReport-r8 measurementReport-r8 measResults measId : 1 (Cell 414) rsrpResult : 47 rsrqResult : 10 measResultNeighCells : measResultListEUTRA measResultListEUTRA MeasResultListEUTRA : [0 ] :

physCellId : 83 rsrpResult : 55

Neighbor cell (83) has better RSRP(55) than the Serving cell(414) RSRP(47). Hence A3 Report

UE in E-UTRA RRC_CONNECTED state with default bearer established and radio link failure was detected and UE initiates the re-establishment procedure ensure that { when { the UE receives a RRCConnectionReestablishmentReject message } then { UE goes to RRC_IDLE and trigger TAU procedure in order to recover RRC connection }

8.5.1.4.1-RLF & ReestablishmentReject

Step1: UE in E-UTRA RRC_CONNECTED state with default bearer established and radio link failure was

detected and UE initiates the re-establishment procedure

Step3:UE goes to RRC_IDLE and

trigger TAU procedure in order to recover RRC connection

Step2: the UE receives a

RRCConnectionReestablishmentReject message

42 LTE Architecture - 3G Network Solutions

Thank you

• 3G Networks team can help Testing and Evaluation in following areas:

• Testing UE’s Conformance Test in Lab or in the field/Live Network with respect to 36.523.

• Testing of eNB and Network functionality.

• Testing and Evaluation of different handphones and Network Elements with respect to Latency and Data throughput at Module and Message level.

• Comparetwo handphones and Network Elements performance and identify the areas of improvements.

[email protected] +91 9886212362 or +91 80 40932221

Visit us at http://www.3gnets.in

mailto:[email protected]

http://www.3gnets.in/

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