The Importance of Cell Tower Locking
In today’s landscape, cell towers are strategically placed to minimize dead zones and ensure stable signal coverage across most regions. However, this proximity can lead to overlapping signals in certain areas. When you find yourself in these overlapping zones—especially while traveling—your devices may struggle to maintain a consistent connection, oscillating between competing signals. Implementing Cell Tower Locking allows you to secure a more stable connection by focusing on a single, preferred cell tower.
With ZBT’s advanced 5G NR network gateways, locking onto a specific cell tower has never been easier.
1. Access the Device OS: Begin by logging into the device's operating system using the SSH protocol.
2. Query Neighboring Cell Information: Execute the command `zbt_modem -B 0001:01:00.0 SAT sp 'AT+QSCAN=3,1'` to gather data on neighboring cells.
3. Handling Scan Failures: If the scan does not succeed, reset the system with the following commands:
- `zbt_modem -B 0001:01:00.0 SAT sp AT+CFUN=0`
- `zbt_modem -B 0001:01:00.0 SAT sp AT+CFUN=1`
4. Cell Configuration: Use the following parameters to lock onto your desired cell:
- For 5G NR:
```
AT+QNWLOCK="common/5g", <pci>, <freq>, <scs>, <band>
```
- `<pci>`: Cell ID to lock
- `<freq>`: Cell frequency band
- `<scs>`: Cell subcarrier spacing (options: 15, 30, 60)
- `<band>`: Cell band
- For LTE 4G:
```
AT+QNWLOCK="common/4g", 1, <freq>, <pci>
```
- `<freq>`: Frequency band
- `<pci>`: Cell ID to lock
5. Resetting the Locked Cell: To unlock the cell, use:
```
AT+QNWLOCK="common/5g",0
```
6. Implementing the Lock:
- For 5G NR:
```
zbt_modem -B 0001:01:00.0 SAT sp 'AT+QNWLOCK="common/5g",165,627264,30,78'
```
- For LTE 4G:
```
zbt_modem -B 0001:01:00.0 SAT sp 'AT+QNWLOCK="common/4g",1,2452,8'
```
By mastering the cell tower locking procedure with ZBT routers, you can ensure a more stable and reliable cellular service for all your devices.
About ZBT
ZBT is a leader in developing network hardware and software solutions that deliver affordable and secure connectivity for families and businesses worldwide. We serve a variety of industries, tackling everyday internet challenges and providing sophisticated networking solutions for smart buildings and IoT networks. At ZBT, we prioritize the enhancement of network security and reliability to support the success of our partners.