Adding a BTS (GSM)

This describes how to add a DBS3900 GSM for the BSC and configure its attributes, logical TRXs, and cell attributes.

Scenario	The initial data configuration of a new BTS is performed at the initial network construction phase and at the network optimization phase.
Mandatory/Optional	Mandatory
NEs Involved	DBS3900 GSM

NOTE:

Abis interface boards are classified into the GEIUB, GOIUB, GEHUB, GFGUB, and GOGUB.
The RF modules of the GSM BTS are classified into DRRU, DRFU, GRRU, and GRFU.

Prerequisites

The data described in Data to Be Negotiated and Planned for DBS3900 Initial Configuration is already obtained.
The BSC global data, BSC devices, BSC links, and BSC clock are configured.
The GFGUB/GOGUB is configured. If a pair of active and standby GFGUBs/GOGUBs are configured, their device IP addresses and port IP addresses are configured.
The GXPUM/GXPUT is configured for the GMPS or GEPS where the GFGUB/GOGUB is located.
The GDPUX is configured for the GMPS or GEPS where the GFGUB/GOGUB is located.

Procedure

Start the Add Site wizard on the BSC6000 Local Maintenance Terminal.

If...	Then...
A site is added for the first time,	Right-click the GFGUB/GOGUB interface board of the GMPS or GEPS, and then choose Add Site from the shortcut menu. A dialog box is displayed, as shown in Figure 1.
A cascaded BTS is to be added under an existing BTS,	Right-click the existing BTS on the management tree, and then choose Site Operation > Add Site from the shortcut menu. A dialog box is displayed, as shown in Figure 1.

Figure 1 Add Site dialog box (1)

Click Add Site. A dialog box is displayed, as shown in Figure 2. Then, set parameters in the displayed dialog box.
Figure 2 Add New Site dialog box
Click OK. A dialog box is displayed, as shown in Figure 3.
Figure 3 Add Site dialog box (2)
Click Next. A dialog box is displayed, as shown in Figure 4.
Figure 4 Add Site dialog box (3)
Select the target BTS and click Add Cell. A dialog box is displayed, as shown in Figure 5. Then, set parameters in the displayed dialog box.
Figure 5 Add New Cell dialog box

CAUTION:
If you find the configuration error of a frequency band in a cell or BTS after the configuration is complete, you need to delete the cell or BTS and then add a cell or BTS to modify the frequency band. The reason is that a frequency band cannot be modified in a configured cell or BTS.
Click OK. A dialog box is displayed, as shown in Figure 6.
Figure 6 Add Site dialog box (4)
Click Next. A dialog box is displayed, as shown in Figure 7.
Figure 7 Add Site dialog box (5)
Click Site Attributes. A dialog box is displayed, as shown in Figure 8.
Figure 8 Site Device Attributes dialog box (1)
In the Site Device Attributes dialog box, right-click the GTMU and choose Configure Board Attributes from the shortcut menu. A dialog box is displayed. Click the FE port parameters of BTS tab on the Basic Attributes of Site Board dialog box, as shown in Figure 9. Then, set related parameters.
Figure 9 FE Port Parameter of BTS tab page

NOTE:
BTS3012, BTS3012AE, BTS3012_II, DBS3900, BTS3900, BTS3900A, BTS3900B, and BTS3900E do not support that Muplex Mode is set to HALF.

The parameter Peer Port IP address index specifies the index of the valid IP address for a BSC port. The BSC supports the settings of multiple IP addresses under one Port No.. Peer Port IP address index maps the valid IP address of the BSC port. After the value of Peer Port IP address index is specified, the BSC IP Address in the IP Interface Board Parameter of BTS tab page is generated automatically and cannot be changed.
Click the IP Interface Board Parameter of BTS tab to display the tab page, as shown in Figure 10. Then, set related parameters.
NOTE:
You can obtain the BTS Interface Board Bar Code by running the DSP BTSESN command.

Figure 10 IP Interface Board Parameter of BTS tab page
Click OK to return to the Site Device Attributes dialog box.
Configure the RXU chain and RF module by referring to Adding the RXU Chain and RF Module (Star Topology), Adding the RXU Chain and RF Module (Chain Topology), or Adding the RXU Chain and RF Module (Ring Topology).
Add other modules to subrack 2 in the Site Device Attributes dialog box. For details, see Adding BTS Modules.
Click OK to return to the dialog box, as shown in Figure 7.
Click Next. A dialog box is displayed, as shown in Figure 11.
Figure 11 Add Site dialog box (6)
Select the added cell, and then click Cell Attributes. A dialog box is displayed, as shown in Figure 12.
Figure 12 Set Cell Attributes dialog box
Set parameters of basic cell attributes.
NOTE:
For two cells, the values of at least one of the following parameters should be different: MCC, MNC, LAC, and CI.
In the TRX Attributes group box, select the allocated TRXs, as shown in Figure 13.
Figure 13 TRX Attributes group box
Click Frequency Config. A dialog box is displayed, as shown in Figure 14. Then, select a frequency.
Figure 14 Set Cell Frequency dialog box
Click OK to return to the dialog box, as shown in Figure 12.
Click TRX Config. A dialog box is displayed, as shown in Figure 15.
Figure 15 Configure TRX Attributes dialog box
Add a frequency corresponding to the TRX from Available Frequencies to Assigned Frequencies.
Click the Channel Attributes tab. A tab page is displayed, as shown in Figure 16. Then, set the channel types corresponding to eight channel numbers.
Figure 16 Channel Attributes tab page
Click the Device Attributes tab. A dialog box is displayed, as shown in Figure 17.
Figure 17 Device Attributes tab page
Set Power Level, Power Type, Receive Mode, and Send Mode. For details about the principles of configuring the TRX receive and transmit modes, see Configuring TRX Receive and Transmit Modes.
NOTE:
When "Send Receive Mode" of the DRRU or DRFU is set to "Single Feeder (1TX + 2RX)", and each module corresponds to two TRXs, Power Type of the TRX cannot be 40 W or 45 W.
Click OK to return to the Set Cell Attributes dialog box.
Repeat 21 through 26 until the frequencies, channel attributes, and device attributes of all the TRXs in a cell are configured.
Click OK to return to the Add Site dialog box.
Repeat 16 through 28 until the attributes of all the cells are configured.
Click Finish. The configuration of the BTS is complete.
Activating a BTS.
1. On the Management Tree tab page of the BSC6000 Local Maintenance Terminal, right-click the target BTS and choose Site Operation > Set Site Active State from the shortcut menu. A dialog box is displayed, as shown in Figure 18.
  Figure 18 Set Site Active State dialog box
2. Under Site Active State, select Activated. Then, click Finish to complete the BTS activation.