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6.7 Configure Scan Mode / Cell Selection
6.7.1 Overview
The Scan Mode / Cell Selection setting has to do with how the CPE selects the best wireless signal
between it and an eNB for its connection to the LTE network. The setting determines which frequencies
the CPE’s routine scan of available frequencies will cover.
Scanning is a process of tuning to specific frequencies and using a simple measure of signal quality to
select the best cell (eNB) with which to communicate. It is a routine background function that occurs
regularly to ensure the CPE is using the best available signal. There are four different scanning options, as
shown in Figure 18 and described below.
Figure 18: Scan Mode/Cell Selection
•
Full Band – Default setting. The CPE will routinely scan all channels in the band, which can make
the time it takes to connect to the network longer than the other modes. The band is dependent
on the CPE model.
• Frequency Lock / Dedicated EARFCN – You can specify up to nine frequencies or E-UTRA Absolute
Radio Frequency Channel Numbers (EARFCNs) the CPE will scan during its routine signal scan.
The frequency/EARFCN information will come from the service provider.
•
Cell Lock / PCI Lock
- A combination of Physical Cell Identifier (PCI) + EARFCN or frequency. The
CPE will scan only the list of eNBs with the PCI and EARFCN combination, which accelerates
network access time.
•
PCI-only Lock – You can lock the CPE to a designated PCI or PCI range.