System Manual

BreezeCOMPACT System Manual
77
Chapter 3: Operation and Administration
Procedures
BreezeCOMPACT Full Configuration via CLI
It is possible to use different PLMN IDs for a SIM card (Home PLMN ID) and for
the network (PLMN ID configured in an eNB/EPC and broadcast over the air). In
this case, the UE is in
Roaming mode for the network.
ECGI Setting:
The following parameters enable the operator to define a unique ECGI:
 An eNB is a base station, which can have multiple cells (sector/carriers), each
with its own cell ID.
 The BreezeCOMPACT BS type is a Macro BS (Macro eNB). A Macro eNB can
include multiple cells.
 The global identity of the cell (ECGI) is 28 bits, where 20 MSBs refer to the Macro
eNB identity and the last eight bits (LSBs) refer to the
local cell ID inside the
eNB.
In order for the MME to distinguish between two eNBs, the 20 MSBs for the two eNBs
should be different. If an eNB has multiple cells/sectors, the 20 MSBs must be the same
for these cells/sectors, and the eight LSBs should be different. To ensure that this is the
case, each BreezeCOMPACT has two configurable parameters: the eNB identifier (20
bits) and the local cell identifier (eight bits). Together, they define a unique ECGI.
The ECGI ID contains 28 bits, and consists of the M
Macro eNB ID
and l
local cell ID
. The
ECGI ID displays on the UE. The ECGI ID is determined, as follows:
eNB-identity * 256 + cell-identity.
If the operator does not have multi-sector/multi-carrier functionality, the operator can
leave the local cell ID’s default value (for example, 1),
and configure only the eNB ID as
a unique value.
23
set cell ran-common enb-identity <eNB Identity>
This parameter must be unique on the network. It specifies the Global eNB ID for the
Macro eNB ID (20 bits).
24
set cell1 general cell-identity
<
<Cell ID>
This is the Local Cell ID for the Macro eNodeB ID. The default can be 1.
25
set cell ran-common cell-radius <Cell Radius in KM>
This parameter defines the maximum cell radius, in kilometers. The eNodeB determines
the cell radius according to the received RACH code. RACH codes exceeding the c
cell-radius
parameter are rejected and the UE cannot attach. This value must not exceed the
maximum allowed distance for the Special Subframe (SSF) configuration.
26
set cell ran-common eNB-name<ENB name>
In this parameter there is a possibility to define a name to this ENB that will be
populated in the S1-MME interface.
Note: the name should not contain space.
In order to show the configuration done run the following command from
BreezeCompact% prompt in ENB :
27
show cell ran-common
As a result you should see an output similar to as follows:
enb-identity 1;
enb-name "eNB";
cell-radius 39;
In general, the special sub frame (SSF) configuration determines the gap required
between the DL path and the UL path. It is primarily used to supported different cell