I. BSC Swap Data
The BSC swap data includes the data of the Huawei BSC and data of the BSC of the original network, the former of which should be prepared by Huawei engineers and the later of which should be prepared and collected by the customer.
Huawei BSC data includes adjacent cell relationship and MSC interconnection data. You need to confirm if the Huawei data is supported by the customer. In addition, you should note that if the BSCs of the original network are under the control of one MSC and if the LAI and CGI of the original network can be reallocated.
For the BSC data of the original network, you need to modify the handover-related data only. That is, add adjacent cell data to the original cells that have been swapped and configure the Huawei cells as adjacent cells of the ordinal cells.
Hereunder introduces the steps to design Huawei BSC swap data: 1) Submit the reviewed RNP&RNO data to the project supervisor
After the RNP&RNO data has been reviewed, you should submit the RNP parameter design report to the project supervisor. For details, see the previous introductions.
2) Design BSC hardware data, BTS hardware data, interconnection data, and network planning data. After that, the project supervisor should check the data according to the following instructions:
If the data is fit for the version used for deployment. If all the data is correctly designed.
If the configuration data of the BSC hardware is consistent with the designed file. For example, the position of the transparent BIE must be fit for the actual connection and the FTC board configuration must also fit the actual connection.
If the type and port configuration of the BTS are in accordance with the actual connection. If external cell data is added to Huawei data. In addition, if the parameters (such as phase
mark and CIC) related to A-interface are necessary.
Make sure that the data can be normally converted on BAM.
Make sure that if the functional hardware supports related functions, such as half rate function, and check the corresponding 14FTC/34BIE.
3) Check DBF data
After designing the project supervisory data, you should submit the DBF data to the network planning owner for review. And the network planning owner should use OMC program and Nastar to check the DBF data. In addition, the network planning owner should also check the followings: If each algorithm is fit for planning design.
If all the parameters are configured and correct.
If the values of the parameters are greater than the suggested values. If the adjacent cell data is completely and correctly configured. If the configuration of half rata and MAR is fit for the design.
If any abnormal information is found, you should correct the information. After that, create an “Autocfg.dat” and put all the above information into the file. And this file should be sent to engineering personnel for loading.
II. MSC Data
The destination (signaling) point code of the LAC and CI of the BTSs to be swapped should be changed. Since the BTSs will be under the control of other BSCs after swap, the destination (signaling) point code stored in the MSC database should be changed accordingly.
To ensure the smooth interconnection and interworking, you should confirm the information of the Huawei BTSs that need to be added to the original system. In addition, you should also confirm that the CGIs and LACs of all the cells are defined in MSC. Note that the definitions of CGI and LAC vary with operators, so you need to check them one by one. If cross-province handover or cross-region handover will appear, you should notify the customer to modify the related information after the integration of the network.
For packet service, you need to confirm the data related to LAC and SGSN. For prepaid service, you need to consider if the routing information of the prepaid subscribers should be modified. III. PCU Data
You need to check the following data:
IP address configuration (If the IP address is correctly configured.) Routing information (If the routing information is correctly configured.)
Hardware data configuration (If the POMU board, RPPU board, L2PU board, and PMC board are configured at the corresponding slot.)
E1 slot configuration (If the RPPU board number, E1 number, and E1 sub-slot number are correctly configured. And if the E1 slot configuration at the PCIC side is consistent with that of the BSC side.)
LAPD link configuration (If the link configuration is consistent with that configured at the BSC side.)
ATTR data configuration (Pay attention to check the configuration of CGI and routing area.) GPRS data configuration (Pay attention to check the network mode of operation and other
defaulted values.)
Dynamic adjustment parameter configuration (CS type and license restriction) PDCH parameter configuration
E1 configuration at Gb interface (Pay attention to the load sharing principle, the backup principle, clock, frame format, code, and other interconnection parameters.)
BC configuration (Pay attention to the configuration principle and interconnection setting.) NS-VC configuration
Cell data configuration at Gb interface (CellID and BSSID) IV. SGSN Data
The SGSN data is mainly prepared for PCU swap. V. BTS Integration
You need to get the key to the equipment room. The BTS integration is performed according to BTS survey, but you can finish the preparations in advance.
If many BTSs are to be integrated, you need to carry computers to load the software; otherwise the load at the BSC side will become heavy.
VI. Network Optimization Integration Preparations
After testing the original equipment, collecting the swap data, and planning the frequencies and parameters, you should confirm the test time, place, and lines for the integration. For details, see RPO401-01 DT preparation self-check list (G/C/W).
Note:
A work memo is needed for data design and modification. The memo should include modification contents, required feedback time, name and ID of engineering personnel, engineering time, etc. At last, this work memo must be confirmed and loop closed.
In addition, you should confirm the transmission according to the following instructions:
The labels of the A-interface, Abis-interface, and Gb interface (the three interfaces locate at the GBSS side and GBSS is installed on DDF rack) are confirmed and placed in due position.
The trunks are normal and the status of the indicators of BIE board and MSM board is normal.
A-interface transmission is fit for CIC configuration according to project file and data. The connection between each BTS and the concatenation relationship of each are correct
according to project file and data. Enough jumpers should be prepared.
The A-interface transmission at the MSC side and the Gb interface transmission at the SGSN side should be confirmed.