Parameter Planning and Mapping Guideline for Swap Project

Guidelines for Parameter Mapping

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Guidelines for Parameter Mapping and Planning (Grameenphone Swap Project)

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Contents I. Preparation of GSM Plan........................................................5 1.

BSC

Dump

Collection………………………………………………………………………………... 2.

Update

the

5 Nominal

Plan………………………………………………………………………….. 3.

Agreed

Strategy

for

Adding

5 and

Activating

TRX…………………………………………… 4.

Physical

6 Configuration

of

DTRUs………………………………………………………………… 5.

Forward

to

BSS

7 and

ROC

Engineer………………………………………………………….….. 6.

7

Final

Checking…………………………………………………………………………….…………….

8

II. Preparation of Basic Parameters Plan.....................................8

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Abstract: Parameter Planning and mapping is basically the preparation of all planned data for BSC configuration for swap project. This includes all Basic Parameters such as CGI, BCCH, BSIC, Frequencies, etc. as well as all RF Parameters like Idle parameters, Handover, Call Control, Channel Management, and etc from ericsson to Huawei. For Grameenphone Swap Project, parameter mapping was successfully done and corresponding tools were already developed to automatically fetch and map existing data from processed BSC dumps to Huawei parameters. The Nominal Plan for the whole project was already approved and corresponding initial POs were already issued. Based on this plan, all consequent parameters are prepared.

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I. Preparation of GSM Plan The

first

role

of

Planning

Team

during

the

Initial

Phase

of

Swap

Implementation is the validation of the Nominal Plan as per the existing network configuration. The following steps can be followed to prepare the Final GSM Plan which will be submitted for final approval of GP’s planning team. 1. BSC Dump Collection Since the nominal plan was based on the previous traffic statistics which may have become invalid due to the fast increase in traffic. The latest BSC Dump will validate the nominal plan configuration. The agreed timeline for provision of BSC Dumps is 35 days before each cluster’s cutover date. Each cluster may belong to different existing BSC. All these BSCs should be collected from the client 35 days before the swap night. All parameters and configuration of the cells should be freeze after the BSC Dump is provided. 2. Update the Nominal Plan The Final GSM Plan should not be, in any way, less than the existing configuration. Based on the BSC dumps collected, the nominal plan should be updated accordingly. Since the nominal plan was based on the EOY 2007 traffic, the planned configuration may be insufficient with the actual traffic or may not match the existing configuration due to the significant increase of traffic in the swap region. The following parameters may be changed in the nominal plan: 

TRU configuration



Antenna Configuration



Required no. of Cabinets



E1 Requirement and RBLT information



Other Solutions

The initial step will be done by HW RNP which is updating the TRU Configuration. All fields related to RF Configuration shall be updated by HW RNP such as: 2014-12-29

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

Cell – Name of the Cell



Cluster – Which cluster the cell belongs to



Existing TRX Confguration - based on the dumps, the existing configuration of the cell



Nominal Plan – our planned configuration for the cell



To

be

Installed

Configuration

–

revised

TRX

configuration

considering the existing configuration. The agreed rules in revising the nominal plan shall be discussed on the item# 3 of this topic. 

Activated on Swap Night Configuration – shall also be discussed on step 3 based on the agreement with GP.



Existing BSC – which existing BSC is the cell currently homed (which Ericsson BSC)



New BSC – planned HW BSC for the cell.



New LAC – planned LAC for the cell.



Solution – this is separated between 2 bands (900 and 1800). Also, this determines both the physical configuration of the TRUs as well as the antenna enhancement, in case there is TMA used. Details will be further explained in item# 4.



Antenna and Cabinet Expansion – initially this is already included in the nominal plan. But after checking the existing configuration, in some cases, there is a need to increase the number of TRX and thus result to additional Antenna or Cabinet. Limitation for the current solutions for GP: o 1 antenna- 4 combined TRX or 2 TRX using PBT o 1 cabinet- 9 DTRUs



Antenna Model – this will still base on the nominal plan but after swap, HW will use the existing antenna (900 and 1800), and should follow the same model for expansion.



Add Frequencies – number of frequencies needed to add for the revised configuration. All existing frequencies shall be used after swap but in some cases, although the total number of TRX of the cell is same as the existing, new frequencies for 900 is required due to more planned 900M TRXs than the existing (1800 maybe less than existing). Example: Existing is 2+4 but plan is 4+2. So 2 900 frequencies are required. Frequency plan shall be provided per BSC.

3. Agreed Strategy for Adding and Activating TRX Adding TRX in the plan is necessary to accommodate the increasing traffic of the network. GP has agreed to add these required TRX based on the following rule:  2014-12-29

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configuration

from

the

Nominal

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Plan

upto

the

existing

configuration. 

If Existing =< Nominal Plan, Huawei may only activate with equal or less than the accepted Nominal Plan but not less than the existing.

The agreed strategy for the additional resources which maybe needed is as follows: 

Re-shuffle TRUs in 1 site to meet, at least, the same configuration as existing. Therefore, reconfiguration of the site will be done by HW RNP and implemented by BSS.



If maximum/total TRXs of the whole site for 900M or 1800M cannot accommodate the same configuration as existing, additional DTRUs from the buffer will be added.

4. Default Physical Configuration of DTRUs The solution for different configurations are required in GP’s ROC system and should therefore be prepared by HW RNP. Existing solutions used by GP to enhance the coverage is also followed by HW for the swap. Existing TCC+TMA is swapped with Huawei’s PBT+TMA, while Uncombined + TMA is same for Huawei after swap. After discussion with BSS, we identified the difference with the existing network. There are 2 differences with the existing standard configuration used by GP and Huawei’s standard configuration: 

Existing network cannot share 1 DTRU into 2 different cells/ sectors. In Huawei, it is possible and is considered in the initial plan in RFQ.



Existing network use combined mode as default for all types of configuration.

These differences prompt GP to keep the configuration in their database which is the ROC system. In each cell, the physical connections should be mentioned in the solution field. This is also necessary for the PAT of the BSS. These are the standard physical connection of Huawei when no other special solution such as PBT+TMA, or Uncombined+TMA is used: 

S1 = Uncombined



S2 = Uncombined



S3 = Combined + 1 DTRU Uncombined



S4 = Combined



S5 = Combined DTRU connected to another DDPU is Uncombined

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5. Forward to BSS and ROC Engineer The receipients of the GSM plan are the BSS Team and the ROC Engineer. BSS Team will start updating their E1 information to complete the whole revised plan and physical reconfiguration in the warehouse. ROC Engineers will upload the GSM plan in ROC for GP Approval. After GP approve, survey team will start their survey to verify all existing data is correct in ROC. If there are any mismatch found at the site, HW RNP and Survey team will discuss with GP and make necessary corrections in the ROC as well as the plan. 6. Final Checking As agreed with GP, 14 days before swap, GP will again provide the BSC dumps of each cluster for the final checking. HW RNP will recheck for any possible changes in the existing configuration. Excluding the special cases where necessary, changes should be very minimal and will not involve antenna or E1 configuration changes. If there are any changes found in the existing configuration, the GSM plan will be revised and forwarded to BSS and ROC again. BSS will modify the physical configuration and ROC engineer will take action for the final approval.

II. Preparation of Basic Parameters Plan Tools1: CDD_Map_Tool Tools1: MO_FREQ_TRX_Toolv3 After the GSM plan is finalized for each BSC, the Basic Parameter List should be prepared immediately for the whole BSC. When the first dump of the last cluster of the BSC has been provided, the Basic Parameter List can be prepared for this BSC. The timeline given is within 5 days after the last cluster’s dump was provided by GP. This Basic Parameter List is provided to BSS per BSC. BSS will use this file in their preloading. Pre-loading is the preparation of .dat file which will be loaded to BSC thru LMT. 1. Content of the file The file contains basic and important parameters of the cell. For the format of the file, please see appendix. 2014-12-29

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Based on the dumps and the plan, the following data should be filled up: 

BSC Name – Planned BSC of the cell



Site Name – Make sure to confirm the status of ALL UNDER CONSTRUCTION sites.



Site Type – this information is in the nominal plan (whole site list). GF for Greenfield and RT for Rooftop.



Cell Name



Cluster – which cluster it belongs to.



To be installed – the final revised configuration plan which is uploaded in ROC. From GSM Plan.



ACT sector configuration – from the GSM plan, the planned TRX configuration to be activated on swap night.



MCC, MNC, CI – from the dump, follow the existing values.



LAC – planned new LAC



TEMP NCC – initially, BSS will configure a temporary NCC for the sites in the BSC. This is necessary so that all cells may be configured as External Cell with the TRUE NCC (Duplicate Cell). On the swap night of each cluster, the Duplicate External Cell will be deleted and the cell may be configured with the correct NCC. See discussion of the Neighbor List Preparation.



NCC – this is the TRUE NCC from the dump files which will be configured only during the swap night when the cell is deleted from the external list.



BCC – BCC from the dump files.



BCCH No. – after swap, BCCH will follow the existing frequency plan. This value will be taken from the dump.



Cell Layer, Cell Priority, Cell Ext Type



Cell Type – Normal or Concentric Cell



GPRS Support, Edge Support, SDCCH Dynamic Allocation Allowed, UL DTX, DL DTX, Encryption Algorithm



1800M TMA/PBT/Uncombined, 900M TMA/PBT/Uncombined



No of SDCCH, No. of SDCCH + CBCH and No. of PDTCH



Power Settings- This follow a default method for setting the values according to the default configuration. See (2) of this chapter.



Frequencies – MA list, MAIO, HSN, Hopping Mode for 1800M and 900M.

2. Power Settings For each default configuration, there is and equivalent power setting used. For Power Type parameter, 900M use 60W while 1800M use 40W. Power Level and Power Finetune are modified according to a default parameter configuration. The aim of setting the power level and power finetune is to have an approximately same power output for all TRX. The 2014-12-29

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setting also consider the output power before swap which should approximately be comparable. Before swap the default configuration in Ericsson is always combined mode and DTRU cannot be shared between two cells. Therefore, to have the same output power as before swap, we need to reduce the power at some amount equal to a combined mode output power. The combiner loss of HW is ~3.3 dB. The default settings are as below: 

S1 = Uncombined Power Level = 1 Power Finetune = 1.2



S2 = 2 TRUs are Uncombined Apply to ALL TRUs: Power Level = 1 Power Finetune = 1.2



S3 = Combined + 1 DTRU Uncombined Apply to 1 TRU only -> Uncombined TRU: Power Level = 1 Power Finetune = 1.2 2 TRUs combined: Power Level = 0 Power Finetune = 0



S4 = Combined Apply to ALL TRUs: Power Level = 0 Power Finetune = 0



S5 = Combined and 1 DTRU connected to another DDPU is Uncombined Apply to 1 TRU only -> Uncombined TRU: Power Level = 1 Power Finetune = 1.2 4 TRUs combined: Power Level = 0 Power Finetune = 0



S6 = Combined Apply to ALL TRUs: Power Level = 0 Power Finetune = 0

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On the second BSC Dump collection, the import files should be prepared. All existing BSCs dump for the new HW BSC should be received from GP before the start of Pre-Benchmarking. 2. Final Data File from BSS The Import files requires the Cell Index No. of the swap cells in the whole BSC. BSS should provide the .dat file of the BSC 10 days after they receive the Basic Parameter List. The Cell Index No. cannot be changed when the import files are prepared, otherwise, you need to prepare again the files updated with the final Cell index number. 3. Network Optimization Parameter (RF Parameters) Tools1: CDD_Map_Tool Tools2: CONSOLIDATE For the Network Optimization Parameter import files, the Tool to be used for the preparation is the CDD Mapping Tool. Using CDD Mapping Tool, you need to process each Exisitng BSC Dump, and save all output files in 1 folder. The output files will contain different sheets with the following RF Parameter tables: 

Basic Parameters - 2 Sheets, First Sheet can be used for the Preparation of Basic Parameter List (see Chapter II), Second is for the import function.



Idle Parameters



Channel Management Parameters



Call Control Parameters



Handover and Power Control Parameters



GPRS and Other Parameters



Number of Edge Timeslots

Another tool can be used to consolidate all the related BSCs output files and filter from these files only the cells included in the HW BSC. The tool is the “CONSOLIDATE Tool”. There are 4 import files (4 sheets) from this tool which can be saved as text separately and import directly to LMT.

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4. Network Plan Parameter (Adjacent Cell and External Cells List) Tools1: NB_Definition Tools2: CONSOLIDATE There are two import files for the Network Plan Parameter, the 2G External cell list and the Adjacent Cell Relations. The NB_Definition Tool can be used to prepare these two files. Save all the output files for all Existing BSC Dumps where the cells are currently homed. Consolidate all the output files using the Consolidate Tool. 

2G External Cell list Preparation: These are the steps to follow: i. From the output file, there are 3 sheets. In the 2G_EXT Sheet, change the LAC of the “ALREADY Swap cells”, that is, Huawei cells which belong to the other swapped BSCs should be updated with the new LAC. The BSC dumps may still contain the old LAC of these swapped cells. LAC information should be checked especially for the recently swapped clusters from other Adjacent BSCs. ii. Combine the EXT_OWN sheet and 2G_EXT sheet. iii. Check the LAC of all swapped cells. All swapped cells MUST USE the new LAC (25XXX). iv. Save as text file. v. From LMT, some test BTS may have defined 2G External Cells. These 2G Ext cells should be deleted first to avoid conflict with the same Cell Index number as some cells in

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the import file. In case the defined 2G External Cells are important for the Test BTS, Export first the Network Plan Parameter for 2G External before deletion. vi. Import the text file with the combined list of EXT_OWN and updated 2G_EXT.

vii. Optional: Change the Cell Index Number of Exported 2G External Cells for the Test BTS with unused numbers. Import the file again to LMT. 

Adjacent Cell List Preparation: Tools2: CHECK_BCCH_BSIC From the output file, the first sheet is the Adjacent Cell List Import File. Save the file as text file. The file cannot be imported if there are same BCCH and BSIC among the defined neighbors of each cell. To avoid the error in import function, follow the steps below: i.

Copy the Adjacent Cell Relations in an excel sheet. Lookup the BCCH and BSIC combination from the Internal Cells and External Cell Export file.

ii.

Copy the Adjacent Cell Relations in an excel sheet. Lookup the BCCH and BSIC combination from the Internal Cells and External Cell Export file.

iii.

Use Pivot table to check if there are same BCCH+BSIC combination used by the Neighbors of each cell. These scenarios are likely to happen because of the temporary NCC used for the internal cells which are not swapped yet. These Temporary NCC may be changed in case of same combinations with some adjacent cells.

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iv.

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If the pivot table shows “2” for a particular combination, look for the adjacent cells having the combination indicated with “2”. Replace the temporary NCC of the internal cells having same BCCH and BSIC combinations.

So here, should replace MYPLR4B. v.

Export the internal cell data and check again for same Combinations.

vi.

Import the Adjacent Cell File.

IV. Checklist for NB Definition Tools2: NB_List_Tool After the finalizing the Import files for Adjacent cell, a checklist should be provide which contains which cells should be defined in different NEs every swap night. 1. NB List This Sheet contains the Adjacent Cell List (Serving to Target Cell List). The sheet should also include some important data both for Serving Cell and Adjacent Cell: 

Cell ID



LAC



CGI



BSC



MSC



BCCH



BSIC



CLUSTER

2. HW MSC Definition In HW MSC, LAC information of the surrounding neighbor cells should be defined. Every swap BSC, the LAC that shall be defined for proper interBSC/MSC handover. From the NB List (1), pivot table can be used to determine which LAC should be defined for the swap BSC inter-BSC/MSC 2014-12-29

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HO.

Choose only the Adjacent Clusters which belongs to other MSCs (Phase) or those in same MSC but not yet swapped. The list of LAC should be emailed to the HW Core: [email protected] 3. Other HW BSC Definition As the swap implementation progress, some cells in the swap BSC have neighbor cells in other swapped BSCs. Therefore, as soon as the neighbor cell is swapped, we need to update the External cell list definition in other HW BSC. The LAC information should be updated every swap night. From the NB List again, pivot table can be used to identify which HW BSC have adjacency defined and which cells should be updated. Follow the images for the pivot table: 

Drag the following data to the pivot table-

Originating Cluster, Adjacent BSC, Adjacent Cluster, Name of the Originating Cell, CGI of Originating Cell, BCCH and BSIC of Originating cell.



Select ONLY the swap CLUSTER (the cluster to be swapped, in the example, Phase 1- Cluster 10).

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Select ONLY the HW BSCs except the serving BSC (the BSC to be swapped, in the example, BSC4 or SVHBS153).



Copy the table and update the LAC information of these External Cells in the Adjacent BSC, in the example, in BSC 1 (SVHBS150).

4. For Ericsson BSC Definition There are Adjacent BSCs for the swap BSC which are still using Ericsson BSC. The external cell definition for these BSCs should be updated with the new swapped cells or in some cases, they only need to update the LAC definition. A checklist for the external cell definition in other BSCs for the swapped cells should be provided to GP. Use the NB List file again to create a pivot table: 2014-12-29

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Drag the following data to the pivot table-

Originating Cluster, Adjacent BSC, Adjacent Cluster, Name of the Originating Cell, CGI of Originating Cell, BCCH and BSIC of Originating cell.



Select ONLY the swap CLUSTER (the cluster to be swapped, in the example, Phase 1- Cluster 10).



Select all the Ericsson BSCs.



Uncheck all swapped clusters including the cluster to be swapped for the data preparation, in this example cluster 10.

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Remove the ADJ Cluster Column and put in the Drop Page Field (Top of Pivot)



Copy and send to GP NIC ([email protected]), HW RNP, and UCE for consistency checking.

5. For Ericsson MSC Definition Same Procedure are Ericsson BSC, only include the information for Adjacent MSC.

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Remove the ADJ Cluster Column and put in the Drop Page Field (Top of Pivot)



Copy and send to GP NIC ([email protected]), HW RNP, and UCE for consistency checking.

V. Preparation of MML Commands Tools2: MML_TOOL Every swap night, the true NCC should be configured for the internal cells and update other HW BSCs external cell LAC definition. To do this, BSS will the scripts to update the NCC. The MML Tool can be used to provide the Scripts. There are 3 MML command files that should be prepared: 1. Remove External Cells On cells to be swapped shall be removed from the 2G external cell definition as it becomes internal cells. 2. Change the Temporary NCC to Real NCC For the swap cells, after deletion from the external cells, the real NCC may now be defined to the internal cells. 3. LAC update for Other HW BSCs A script is also used to change the LAC information of the swap cells in other BSCs external cell definition from Old LAC (Ericsson) to New LAC (Huawei). 4. Check the Reserved Parameter 2 From Optimization Parameter Output file from Tool, in Sheet BSS_BASIC, Check for cells with MAXTA less than 63. Get the list of these cells and its corresponding Reserved Parameter 2 values. Use the Tool to generate the script to modify the parameter.

VI. Important Note: Do not include cells which will not be swapped on the same night. In some 2014-12-29

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cases, when cluster has more than 35 sites, some sites are not swapped together in one night. Some sites will be swapped on the next night so LAC should be updated according to the scheduled swap night of each site.

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Parameter Planning and Mapping Guideline for Swap Project

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