5G monitoring - full neighbor scan
- Dejan Pojbič
General
This feature expands the existing set of statistics which are gathered and reported via MQTT messages by OpenSync as part of the CELLM manager. The newly added statistics contain neighbor cell information of all service providers from a full scan (AT+QSCAN). There are 14 new elements, described in the Northbound API section below.
Northbound API
MQTT reports
A new message has been added to CELLM MQTT reports:
// radio access technology
enum RadioAccessTechnology {
RADIO_ACCESS_TECHNOLOGY_LTE = 0;
RADIO_ACCESS_TECHNOLOGY_NR5G = 1;
}
message CellFullScanNeighborCell {
RadioAccessTechnology rat = 1;
uint32 mcc = 2;
uint32 mnc = 3;
uint32 freq = 4;
uint32 pcid = 5;
int32 rsrp = 6;
int32 rsrq = 7;
uint32 srxlev = 8;
NrScs scs = 9;
int32 squal = 10;
uint32 cellid = 11;
uint32 tac = 12;
Bandwidth bandwidth = 13;
uint32 band = 14;
}Full scan neighbor cell messages are reported as part of the existing CellularInfoReport message:
/* Cellular info */
message CellularInfoReport {
...
+ /* Full scan neighbor cell info */
+ repeated CellFullScanNeighborCell full_scan_neigh_cell_info = 12;
}The meaning of all newly added fields is described in the following table:
Name | Type | Description |
|---|
Name | Type | Description |
|---|---|---|
| enum | Radio access technology { “LTE”, “NR5G” } |
| uint32 | Mobile country code (the first part of PLMN code) |
| uint32 | Mobile network code (the second part of PLMN code) |
| uint32 | The (EUTRAN) Absolute Radio Frequency Channel Number. EARFCN for
|
| uint32 | Physical Cell ID |
| int32 | Reference Signal Received Power. Valid range is from -44 dBm to -140 dBm. |
| int32 | Reference Signal Received Quality. Valid range is from -3 dB to -20 dB. |
| uint32 | Received signal (RX) Level value, in dB, for cell selection. |
| enum | Sub-carrier spacing value. Only applicable for |
| int32 | Received signal Quality value, in dB, for cell selection. Only applicable for |
| uint32 | Cell ID. Optional. |
| uint32 | Tracking area code. Optional. |
| enum | Bandwidth. Optional. |
| uint32 | Frequency band. Optional. |
Southbound API
5G cellular network scan info is gathered using the existing function osn_cell_read_modem(), so no new Target API functions were added for this feature.