BTS manual
One on station ready to Tools: PC, install the Measurement file, flat-blade screwdriver, for measurement with a serial cable, a large wrench or locking plier’s diode (transfer test). Second, talk about the main part of the indoor installation (equipment) 1. Floor load-bearing, does not meet the load-bearing capacity of 600 kg / m must be reinforced, check the rack-mount; 2. Grounding, interior equipment grounding resistance is less than 5 ohms; 3. Attention to the top of the rack open space protection, install the power cord, check BTS rack power on power-48V or so (-39V to-72V), and positive and negative cannot be reversed; 2M cable, but more reserved line, and disk-to-rack to the top (see Figure 1);
FIGURE 1
4. Check each sector within the RF cable and carrier frequency and other connections (including CS03, CS28 and CS04). 5. All the cable alignment specifications, tidy, beautiful, tie help tie uniform.
6. The label position is accurate, specifications, and tidy.
Third, the tone measured opening establish a connection to the BTS The computer connected to the device after the SUMA board, open BTSNEM-BTSWAZX1, commte of input user name and password bts2site (see Figure 2), the connection.
Figure 2 login screen
Interface setting
Figure 3
Click the Connect button, set up after the following connection on BTS interface (see Figure 4);
Figure 4 Above the connection process, the following is a hard test steps
debug software to download and start the BTS
1. Download the Measurement Software ① Open the menu, select Configuration-> BTS Software, Download (or choose Configuration-> Download Commissioning Software, BTS Commissioning panel), the following interface (see Figure 5);
Figure 5 Selecting the Measurement software path and download
Figure 6 file download process ② After the open the Configuration-> BTS Commissioning Panel (see Figure 7);
Figure 7 BTS Commissioning interface Click Stare Commissioning button to start the hardware test and settings: 2. The next configuration of the BTS logical sector number (see Figure 8). Click the Edit Sector Mapping in accordance with the corresponding label on the ANC N, P, Q correspond to the first, second and third plot in Sector corresponds to the ANC where the slot is set to 1, 2, 3, and then click OK. Bridge - whether or not to use the bridge, the tick that the use of, such as the use of the bridge in a high-loss mode. Such as the cell's TRE total of not more than two, generally do not use a bridge; Sector - indicates that the logical sector of the corresponding cell in accordance with the CAE table settings.
Figure 8 BTS logical sector number of settings Success will prompt the following information: the Apply the RI Changes: BTS ...... success 3. Double the carrier frequency setting. Click the Start button on the Twin - the TRA Settings corresponding.
Figure 9 pairs of carrier frequency settings
1. Is set to the DUAL the TRE (dual carrier frequency mode) 2 Set the DIV SINGLE the TRE TX (overwrite mode) 3 DIV (single carrier frequency mode is set to SINGLE the TRE NO TX) 4. The carrier frequency of the hardware check. Click the Start button corresponding to the Hardware the Check the following interface
Figure 10 hardware configuration status check - All Sectors of the Init menu to the adoption of the hardware testing in the operational state 5, start the BTS for measurement state, select the Init - All Sectors correspond to the Start button to start (Figure 11).
Figure 11 activation hardware After the success of all modules of the lights are lit, then adjustable measuring. The next standing wave ratio test: the Start button, click the VSWR Measurement corresponding to the following interface:
Configure the following parameters: 'ANX Device': ANX ** (** = ANX position) to select the corresponding cell cavity position 'Frequency': available the frequency selection (900 frequency points and 1800 frequencies to choose the right) 'Output Power Attenuation': 0 dB 'Measuring Period’: 10 seconds. 'Urgent Alarm Threshold Value': 3 Set, click Start to begin the VSWR test, wait until the results come out.
7. After all tests are passed; click the End Commissioning button, the following interface:
Select the hardware you need to update data from the right window, click OK to end the test mode, wait until the following message appears: Do you want to save the result into a commissioning report? Select YES to save the report of the Measurement
Tune the measurement process. 1. Enter the first check the status of BTS module; Click; select the Hardware in the Modules in the left window, the following interface (Figure 12), from the right window to view the hardware operation of the site:
Figure 12 is activated the module status BTS main RIT module of the physical address map (Figure 13):
Sub-frame
The physical address of the BTS module
SR5
Fan unit 80
81
84
87
90
SR4
Fan unit 62
63
66
69
72
SR3
Fan unit 48
49
52
55
58
SR2
Fan unit 32
33
36
39
42
SR1
Fan unit 16
17
20
23
26
Slot
0
1
4
7
10
Figure 13 Note: BTS RIT physical address is translated by the corresponding sub-frame and slot, the corresponding rule is:
XY - that is, sub-frame number of layers; Y is the slot number. The address is a hexadecimal number need to be converted to decimal. If the station unit is in the subtract, slot 1, its physical address is 21, the decimal value is 33.
The BTS to open a new station process After the completion of the above steps, you can prepare the opening of the new site, the specific processes can be divided into the following two steps. 1, located QMUX Address: the Start button, click the Edit Q1 is the Address edit site QMUX address
Figure the 14 Qmux address settings Set QUMX click Configuration -> Transmission Settings ... -> the SUM the Initial Settings transfer settings window (Figure 15, 26)
Figure 15 transfers the settings window
QUMX provided by CAE table or OMCR measured to obtain; transfer settings (the Configuration -> Transmission Settings ... -> SUM Board Configuration), if only one the BTS, select the chainend position, if there are two the BTS, shared all the way to transfer, a BTS to the chain-middle position, second choice chain-end position is set up, and click OK
Figure 16 2. Address time slot set, waiting for data download. Under normal circumstances, the transmission through the SUMA board ABIS1, OML lights lit, O & M lights flashing, indicating that this time is to download data, O & M long bright lights, indicating that the data download is complete. At this point, all the work has been completed, can OMCR side confirm the opening of the base station. Fourth, the expansion of volume reduction
In order to network optimization and the utilization of the carrier frequency is sometimes on the base station sectors extend volume reduction. Spread spectrum point 1. Contained to the expansion pilot insertion slots, select the cell corresponding to the connected line CS28 line 2. Choose Configuration -> the HW Settings ... -> Begin the HW Modification 3. double the carrier frequency setting. Click the Start button on the Twin - the TRA Settings corresponding.
4. Is set to the DUAL the TRE (dual carrier frequency mode) 5. set the DIV SINGLE the TRE TX (overwrite mode) 6. DIV (single carrier frequency mode is set to SINGLE the TRE NO TX)
choose Configuration -> the HW Settings ... -> End the HW Modification end hardware configuration
less frequency 1. the frequency you want to lose killed, and then the carrier frequency to pull out. 2. choose Configuration -> the HW Settings ... -> Begin the HW Modification 3. choose Configuration -> the HW Settings ... -> Remove HW Box pops up, select the frequency you want to lose (in the frequency of physical location for the tag display, and only killed the modules only display), select Remove, after the successful close this window.
4, choose Configuration -> the HW Settings ... -> End the HW Modification end hardware configuration
5. The BTS troubleshooting operations and case Alarm See Select the Alarms window on the left click in the right window to view all the alarms in the site.
① The loss of the signal the incoming signal is lost ② The of AIS 2M lost ③ The Loss of the CRC alignment CRC alarm, you can choose the CRC to open or close to and BSC the corresponding ④ The Loss of frame alignment frame-of-step, may be too large (BER) 2M line is not connected to the head of ⑤ The Error the rate> 1E-3, the Error the rate> 1E-4, the Error the rate> 1E-6 error rate alarm ⑥ FAR end the alarm remote alarm Transmission barrier can be up ring (BSC side) and down ring (BTS side), which determine the fault location, specifically the following illustration:
Figure1: transmission is normal to put the state (DDF positive)
Figure 2 transmission put normal state (DDF positive), in which the red line circle BTS to DDF aircraft parts, the green circle to up part of the DDF frame.
Figure 3 to BTS side of the ring, you can transfer through the SUMA board ABIS lamp lit,.
Figure 4 up the ring, and OMCR transmission
operation of the BTS 1.
The hardware
Click Select the Hardware in the left window the Modules in the right window of a hardware failure to do killed, activation, restart operation: to operate the hardware click the right was built (Figure 17) is selected, according to the need to select the appropriate operation.
Figure 17 2. the district If you want to district killed the activation of operation must first ensure that the Configuration -> the Monitor BTS_TEL & BTS_OM's menu is in a tick "√" state, selected on the left window of the BSC SBLs click in the right window to view district in the basic side state (Figure 18). Selected to operate the cell rightclick to select Disable will pop up after the WTC Parameter window (Figure 19) or wait for a few minutes after the district lock out, To lock out residential release, please select the Init command.
Figure 18
Figure 19
3. Replacement of the cavity and sometimes need to re-configure the logical sector number of the BTS. Selected window on the left click the Remote operate the Inventory -> Sector Mapping; Right-click the editing cavity (Figure 20)
Figure 20 VI Troubleshooting Failure aspect everyone has different opinions based on experience accumulated judgment, saving time and greatly lessened the workload. 1 .SUM board cannot load the file General SUM board hardware failure can be replaced. Some are wet room environment, we can power rack power 1, 3, 5 layers with a fan blowing the temporary board, and then do this tune. The SUM boards load the file properly, but hard to measure all the boards cannot all start (i), the same row of the board cannot start properly, and there is no light indicates that the signs of general power are not added; (ii), the appropriate board failure; (iii), slot reasons; (iv), rear cord is damaged. 3. VSWR prone to this failure.
Standing wave ratio is a reflection of the measure of the degree days feeder coupled to the wireless signal. A direct impact on the output of the downlink signal strength, seriously affecting call quality, the standing wave than the ratio closer to 1, indicating that the higher the degree of coupling of the antenna and cable systems, will have more wireless signal transmission into the air. In turn, the standing wave than the ratio of the higher, it means that more of the wireless signal loss in the days of feeder system, the actual launch into the air, the weaker wireless signal strength. Field standing wave ratio of less than 1.3, the alarm threshold 1.5. Best to use the Site Master the measured standing wave ratio, to ensure the quality of the antenna. If greater than 1.3, can be segmented by one investigation, and general equipment cutover the transit fed not be a problem. Failure reasons: (i), the connector of the cable did not do a good job, or connection issues; (ii), the ANC have a problem; (iii), CS04 cable. The above checks no problem then check the cable of the antenna and cable, if the Site the master, can be used to locate, the investigation will be simple. Transmission barrier, the bit error rate, the base stations flash (which is also to consider the BTS side) Transmission joints, Weld, sealing off; (2), the rack top cable between the SUMA board, replace the rack top cable between the SUMA board by the transmitting port to port 1 (see) transferred to port 3; (3) SUMA board be replaced; (4), rack to the top of the transmission cable between the transmission rack.
5.The opening of the site, the district does not, then road access i) the ANC or the ANC brought the carrier frequency of hidden failures; (ii), CS04 cable; (iii) BSC measured data did not do, such as transmit power is set to a minimum. 6. Base station the EACB board damage, the alarms cannot upload. (i), in the BTS end EACB board the Disable Init operation(ii) EACB board left and right part of the bending deformation of the connection pointer; (iii) the EACB board damage. 7. The RSL confusion RSL confusion carrier frequency and cell volume reduction in spread up the sector and the carrier frequency of the order of a step-by-step do not expand to two or two above the carrier frequency or district.
