baseband

LTE (Digit ig ita al Unit - Based) Based) Conf Config iguratio uration n

Solutio olu tion n to Exercis Exercise es

03815-LZU1082381 Rev A

LTE (Digital Unit - Based) Configuration

DISCLAIMER This document is a training document and contains simplifications. Therefore, it must not be considered as a specification of the system. The contents of this document are subject to revision without notice due to ongoing progress in methodology, design and manufacturing. Ericsson shall have no liability for any error or damage of any kind resulting from the use of this document. This document is not intended to replace the technical documentation that was shipped with your system. Always refer to that technical documentation during operation and maintenance.

© Ericsson AB 2016

This document was produced by Ericsson. 

-2 -

The document is to be used for training purposes only and it is strictly prohibited to copy, reproduce, disclose or distribute it in any manner without the express written consent from Ericsson.

© Ericsson AB 2016

03815-LZU1082381 Rev A


Table of Contents

Exercise 1 DSCP, DSCP, Pbit and VLAN con figu fi gu rati on ...... ......... ...... ..... .. 4 Exercise 2 Site files ............................................................ 6 Exercise 3 Unders Und erstan tan ding di ng BSIM ............ .................. ............. ............. ............ ........ .. 9 Exercise 4 Cell Cell parameters parameter s and QoS tabl e ......... ............ ...... ...... ..... .. 14 Exercise 5 Featu Feature re Check and Acti Ac tivati vati on ........ ........... ...... ...... ...... ..... .. 16 Exercise 6 End-to-e End-to-end nd con figuration procedure demo dem o (opti (op ti on al) ................ ....................... ............. ............ ............. ............. ............ ........... ..... 18 Exercise 7 Invest igatin ig atin g IPSec IPSec c onfi on fi gurati gu rati on ...... ......... ...... ...... ..... 19 Exercise 8 Ad di ng a new sec t or (Opt io nal ).................... 20

03815-LZU1082381 Rev A

© Ericsson AB 2016

-3 -


Exerc Exercis ise e 1 DSCP DSCP,, Pbit and VLAN VLAN config conf igur uration ation INSTRUCTIONS: Parameters (attributes) that are related to DSCP or P-bit or VLAN configuration for the Managed Object (MO) are shown below.

ManagedElement

Equipment

IpSystem

TransportNetwork

Subrack

Slot

IpAccessHostEt

PlugInUnit

IpAccessSctp

Sctp

N/A N/A

ExchangeTerminalIp dscpPbitMap

GigaBitEthernet

ntpDscp N/A

IpInterface

vid vLan Observe: attribute Vlan is not used in this node type!

Figure 1-1: List all attributes related to configuration of VLAN, DSCP and Pbit

Now, using AMOS against a node assigned, answer the following questions: Tip: use the command “get . dscp” 1. In which MO is the DSCP value used for NTP packets sent from the RBS stored? Which is the value set on test environment? As can be s een i n f ig ure ur e abo ve, t he IpAccessHostEt MO IpAccessHostEt MO holds the DSCP DSCP value that is us ed to tag out going NTP NTP frames. 2. In which MO is the DSCP value used for S1/X2 Control Plane stored? The MO ENodeBFunction has an attribute c alled dscpLabel. dscpLabel . This DSCP DSCP value is used to tag all sign aling messages messages s ent to/from the RBS.

-4 -

© Ericsson AB 2016

03815-LZU1082381 Rev A


3. Where do you find information about DSCP DSCP values for S1/X2 User Plane? In the QCI table (check the attribute dscp in dscp in t he MOs MOs QciProfilePredefined ). 4. In which MO can you find the DSCP value used to tag Mul (Operation and Maintenance) traffic? Check Check t he attribute dscp in dscp in MO IpOam=1,Ip=1. IpOam=1,Ip=1.

03815-LZU1082381 Rev A

© Ericsson AB 2016

-5 -


Exerc Exercis ise e 2 Site files fi les SITE INSTALLATION FILE 1

In Figure 2-1 below, the filled values reflect the network below: 

The eNB OaM IP address is 10.0.10.40.



The address to the default router is 10.0.10.100



The OaM network prefix length is 24.



The VLAN (for O&M) is 910.



The logical name of the eNB is RBS40.

Figure 2-1: Site Installation Installation file

2

If the integration is to be done manually, what field may be deleted from the file above? As sh ow n i n t he f il e, th e “ Smr s Dat a addres add res s” is no t required.

-6 -

© Ericsson AB 2016

03815-LZU1082381 Rev A


SITE BASIC FILE 3

Figure 2-2 below shows the script for the Site Basic configuration with the following configuration requirements are fulfilled: 







One NTP server is used for the OaM time. OaM time. The IP address is 10.0.10.92. In the future, another server with IP 10.0.10.93 will be used. The Network Synchronization has two sources: o

A GPS on the front of the DU.

o

An NTP server with an IP address of 10.1.7.55. The IP subnet prefix length is 24 and the default router is 10.1.7.1. VLAN 110 is used for the synchronization traffic. The RBS IP address used to communicate with the NTP server is 10.1.7.30

The GPS synchronization source has to be given a higher priority than the Synchronization over IP source for the Network Sync. OSS-RC master server ihas IP 192.145.60.2.

Figure 2-2: Exercise 2 – Site Basic file

03815-LZU1082381 Rev A

© Ericsson AB 2016

-7 -


4 Also answer the following questions: a) What would you change in the file if the node did not have any GPS source for network synch? 1. The tag wi th GpsSyn GpsSyn cRef (at (at the top) would be deleted. 2. In the Synchronization tag (at (at the bottom of the file), the syncPriorityRef1 would syncPriorityRef1 would instead be “ IP-1IP-1-1” 1” and syncPriori tyRef2 would b e deleted. deleted. b) If the SoIP client (NTP synch) solution was not required, how you adjust the file in Fig 2-2? Delete the IpSyncRef tag, and the syncPriorityRef2 attribute.

-8 -

© Ericsson AB 2016

03815-LZU1082381 Rev A


Exerc Exercis ise e 3 Understandin Underst anding g BSIM BSIM OBJECTIVE: The aim of this exercise is to understand the use of the Base Station Integration Manager (BSIM) tool in the OSS-RC and its role in autointegration.

INSTRUCTIONS: 1

From the Common Explorer/View/Utilities menu (while in the Network Configuration perspective), open the templates that are available for BSIM to use. Which of these are specific to (and mandatory) LTE ? (Hint: Sort based on “Type”) 



2

Auto Au to Int egr ati on RbsSumm Rbs Summ aryFil ary File e / Au to Int egr ati on / SMRS AddNo Ad dNodeExam deExam pl e / ERBS / ARNE



1Cell_FDD_RNBulkCMExample_Lxx / RNBulkCM / LRAN



SiteEquipment_Lxx / RbsEquipment / SMRS SMRS



SiteBasicExample_Lxx / SiteBasic / SMRS SMRS



SiteInstallExample_Lxx / SiteInstall / FileMgr



TNBulkCMExample / TNBulkCM / LRAN

Open and Copy an existing Site Basic template on a texteditor. [On the file, right-click/Edit/Ctrl-A/Ctrl-C, and then paste is on a text-editor.] (Do NOT change the template directly!!!) {No solution required.}

3

Which of the parameters do you think will change from one RBS to another in the Site Basic file? Are these parameters reflected as substitution variables in the file? ipAccessHostEt.ipAddress will definit ely change vid, n etworkPrefixLength, defaultRouter0 defaultRouter0 might might change, depending depending on the network sc enario. enario. If different RBSs RBSs have different synchronization sol utions , the synchron ization ization part co uld change.

03815-LZU1082381 Rev A

© Ericsson AB 2016

-9 -


Other Other parameters parameters will most likely remain the same in the whole network.

4

If they are not, change the file so that the substitution variables are reflected. Save the file with your name in your home directory. (This file will/may be imported to the templatedatabase later.) For each each of the parameters parameters that c ould c hange, indicate it by the formal “ %variable%” %variable% ” . For For example, example, if the vid shou ld change, then then ins tead tead of writ ing a number f or the VLAN Id, you could write” %Vid %Vid for traffic%”

5

Open another template file that is already available in the template-database- a TNBulkCM file. Copy it on a text-editor.

{No solution required.}

6

If this file was imported to an RBS 6000, how many/which MOs would be created in the node? How many existing MOs would just be changed? Depends Depends on whic h file is us ed. The The number of “ create” create” commands tells how many will be created. created. Similarly, the number number of “ update” update” commands commands tells how many many MOs MOs will be updated.

7

Is the MO “TermPointToMme” created? Why? If it is not c reated, reated, then it is b ecause ecause the DNS DNS is supp osed to pr ovide the IP address address and t he RBS would automatically create it. Check the parameter dnsLookupOnTai.

8 Are all the attributes that would differ between different RBSs accounted for with/as “substitution variables”? Depends Depends on which f ile is checked. Look for %subst ituti on variables%

9

Copy an existing ARNE template on a text-editor. (Do not make change in template directly!!!) {No solution required.}

10 Should the Site be created or is it assumed to exist already? If, in the ARNE file, the Site is “ Existing, th en the site must already already exist (it will NOT be created). created). If it says “ New” New” , it will be created created by this file.

- 10 -

© Ericsson AB 2016

03815-LZU1082381 Rev A


11 According to the ARNE file, is the password for a ll the RBSs the same, or are they different? Depends Depends on whic h file is c hecked. Look if there is a %substitut ion variables% variables% for parameter parameter “ Passw Passw ord” . If it is “ fixed” , then all all the RBSs defined defined throug h BSIM are expected expected to have the same password.

12 There are a lot of other template files, just browse through them to get an idea of how they look like. {No solution required.}

13 If you made a change to a Site Basic file in question 4, you can import it now. a) Right-click on the Site basic template and “duplicate”. b) On the duplicated copy, change change the name and “import” the file that you had saved earlier. c) Press “Save” at the end. The template should now appear in the list. {No solution required.}

14 Understand the auto-integration procedure in BSIM by following the procedure given below: {No solution required, instruction clear enough} a. Create a new Planned Planned Configuration. Give your own name. Press on the “New Node” icon (just where it says “Nodes”) b. Under general TAB:  







RBS Name: eRBS1X (X = group_number) Choose "auto-integrate" but NOT the “Security” or “Without Laptop” options Use the “OSS Node template” to be “AddNodeExample”. (This is the ARNE template that will define the RBS in the OSS-RC. Choose an existing site and SubNetwork Group- if needed.) O&M Host IP address: 10.60.200.1X (X =group_number) MIM Version assigned by the instructor.

c. Transport TAB. 

03815-LZU1082381 Rev A

Select “Import Transport Configuration”

© Ericsson AB 2016

- 11 -


Use CM Template assigned by the Instructorfor example TNBulkCMExample. TNBulkCMExample. Fill in the field “eNB ID” to be your group number.



d. Radio TAB. Select “Import Radio Configuration”



Use CM Template assigned by the Instructor. Fill in all substitution variables.



e. Auto Integrate TAB Fill in the substitution variables in each of the template files. You can use your own template file for SiteBasic if you prefer. 



f.

Do not bother about the DNS and the DHCP templates

Result TAB: Before pressing the “Add Nodes”, itit is good to “Validate Nodes” that all the parameters are filled in. 





Once done, it might be also wise to “export” the configuration inputs into a file, so that the next time you need to do it again, you do not have to fill the details. The file would have all the inputs already. This is done by pressing the symbol “arrow-up” next to the “New Node” symbol used earlier. Now add the node. If the SMRS is properly mounted to the OSS-RC, then the RBS will be visible in the Common Explorer and the OSS Explorer.

15 Assuming that Step 14 went fine (or even if it did not), answer 

the following: Where would the “Site Installation” file be saved? What should be done with this file? Site Installation Installation file is saved in the fil e system in the OSSOSSRC. RC. These These files should be sent to the On-site integrator.



Where would the files “Summary”, “RbsEquipment” and “SiteBasic” be saved? These three files are saved in the SMRS server.

16 What does one find in the OSS folder “/var/opt/ericsson/nms_umts_wran_bcg/files/import/ /var/opt/ericsson/nms_umts_wran_bcg/files/import/”? ”?

- 12 -

© Ericsson AB 2016

03815-LZU1082381 Rev A


This is t he place where the Bulk CM for transport and radio are stored. The subst ituti on variables are are replaced replaced by inpu t parameters, parameters, and and the fin al files that are used to con fig ure the TN and RN are are placed here.

17 What is seen in the file /var/opt/ericsson/log/ osgifwk_debug.log This is the log that could be used to troubleshoot if problems occur during the Autointegration process.

03815-LZU1082381 Rev A

© Ericsson AB 2016

- 13 -


Exerc Exercis ise e 4 Cell Cell parameters parameters and QoS table INSTRUCTIONS: By looking through the BSIM template or by using AMOS against a fully configured RBS, answer the following:

1

Which Managed Object defines the cell? EUtranCellFdd EUtranCellFdd (or EUtranCellTdd)

2



What are the EARFCNDL and EARFCNUL defined for one of the cells? Depends. Depends. If using AMOS, AMOS, type “ gets cellfdd arfcn” . In EM, EM, check the property of the EUtranCellFdd MO. Can they be the same in the other cells in the same RBS? Yes. (It (It wil l lead to Intr a-frequency HO eventually.)



Can they be different in the other cells in the same same RBS Yes. (It will lead to Inter-frequency HO eventually.)



Can they be the same in other cells cells in different RBSs? Yes. (It (It wil l lead to Intr a-frequency HO eventually.)



Can they be different in other cells in different RBSs? Yes. (It will lead to Inter-frequency HO eventually.)



Can you calculate the Central Frequency of the UL and DL based on these parameters? Which band does this frequency belong to? (Use Google to search. http://niviuk.free.fr/lte_band.php is http://niviuk.free.fr/lte_band.php is a good site to test.) For example, if the DL ARFCN was 2900, then central frequency 2635.0 MHz in DL 2515.0 MHz in UL is used. These fall in Band 7.

3 





- 14 -

What is the tracking area code defined in this cell? What is tracking area used for? For mobility. (Updating the network on where the UE is, and for the network to page the UE.) Can all the cells in the same RBS have the same tracking area code? Yes Can the cells in the same RBS have the different tracking area codes? Theoretically Theoretically yes, but no t usually done.

© Ericsson AB 2016

03815-LZU1082381 Rev A


4

What is the Physical Cell Identity (PCI) defined in this cell? Check the parameters physicalLayerCellIdGroup and physicalLayerSubCellId.



PCI = 3 X physi calLayerCellIdGroup + physicalLayerSubCellId Can all the cells in the same RBS have the same PCI? No, they should be different.



Can cells in other RBSs have the same PCI? Yes, although they should well apart not to cause interference.

5

How many RxAntenna and TxAntenna are meant to be used for this cell? From Cell, there is a relation to SectorCarrier. SectorCarrier MO the parameters that noOfRxAntenna and noOfTxAn tenna. Note that value 0 has a speci al meanin meanin g.

6

Is it possible to have two sector carriers in the same cell? (Check the CPI.) Yes, Yes, if us ing a feature called called “ Combined Cell” Cell” .

7

Is it possible to have the same SectorCarrier MO referenced by the different cells? Yes.

8

How many MOs “QciProfilePreDefined” exist in the RBS that you are connected to? There are 10

9

What is the DSCP value that would be assigned to a default bearer? Default bearer us es QCI=9. QCI=9. In the QCI=9, QCI=9, the ds cp=14 is used (in the system config uration).

10 Is it possible to change the dscp value? If so, which tool could be used to make the change? Yes, and and any t ool (AMOS (AMOS or Element Manager or Bul k CM) could be used.

03815-LZU1082381 Rev A

© Ericsson AB 2016

- 15 -


Exerc Exercis ise e 5 Feature Feature Check Check and Acti Ac tivatio vation n INSTRUCTIONS: 1

License Key File (LKF) is unique to each RBS. When, during the configuration, was the Unique Logical Name (ULN) specified? Or is this related to the hardware identity? This is specified during the Site Site configuration. Once the site confi guration is perform ed, check the MO Licensing for the parameter parameter “fi ngerprint” . This This is t he ULN. ULN. It is NOT NOT related related to the hardware identity.

2

How could you verify the licenses AND the feature status using: AMOS



invl 

Element Manager Containment View / ManagedElement / SystemFuuctions /Licensing

SMO



Network View and choose the eNodeB. Only capacity values are shown, not t he feature feature states!

3

How is the License Key File installed? (Check the CPI “License “License Key File Fault”) Fault”) Ac ti on up dat eLi cen seK eyFi le o n t he MO Li cen si ng

4 Assuming that the license key file is installed and the feature was allowed, configure the parameters so that the “Operator Defined QCI” feature may be used. What is the difference between the parameters “featureState”, “licenseState” and “serviceState”? featureSta featureState te is like adminState, operator operator can c ontrol its state “ activated” activated” or “ deactivate deactivated” d” licenseState licenseState (readO (readOnly) nly) is controll ed by t he license fil e. It It is “ enabled” enabled” or “ disabled” disabled” serviceStae serviceStae (rea (readonly) donly) tells i f the feature is “ operable” operable” or “inoperable”

- 16 -

© Ericsson AB 2016

03815-LZU1082381 Rev A


5

Create a new MO called QciProfileOperatorDefined =qc1X (X is the group number) with the following parameters: Dscp: 24 LogicalChannelGroupRef: LogicalChannelGroup=0 Priority: 10 Qci: 1X ResourceType: 0 {No solutio n required.}

03815-LZU1082381 Rev A

© Ericsson AB 2016

- 17 -


Exercise xercis e 6 End-to-end nd-to-end configu conf iguration ration procedure pro cedure demo (Optional) {No solutio n required.}

- 18 -

© Ericsson AB 2016

03815-LZU1082381 Rev A


Exercise xercis e 7 Investi Investigating gating IPS IPSec configu conf iguration ration INSTRUCTIONS: 1

What are the two authentication methods for IpSec configuration? In which MO is this choice made? Certicate based authentication or pre-shared key. The choice is made in IkePee IkePeer.a r.authenticationMethod uthenticationMethod

2

If autointegration was not performed, how would you install the certificates in the RBS? (Use AMOS or CPI or Element Manager to get the answer.) Ac ti on on IpSec MO: i ni tCer tEn roll ro ll men t w il l i nstal ns tal l t he certificate Ac ti on on IpSec MO: i ns tal lTr us ted Cert if ic ates w il l i ns tal l the trusted certificates

3

Which MO represents the IKE Security Association? IkePeer

4

Which MO represents the IKE Child SA? IpSecTunnel

5

How would a router in the untrusted network know where to send an IpSec packet if the whole message is encrypted? An outer ou ter IP header head er i s ad ded (wh ic h i s n ot enc ry pt ed) t hat allows rout ing up t o the Securit Securit y Gateway. Gateway. The outer IP addresses addresses are used used for rou ting in the untrusted network.

03815-LZU1082381 Rev A

© Ericsson AB 2016

- 19 -


Exercise xercis e 8 Adding Addi ng a new new sector (Opti (Optional) onal) {No solutio n required.}

- 20 -

© Ericsson AB 2016

03815-LZU1082381 Rev A

baseband

Recommend Documents