HMon sits at the eNodeB or a centralized OAM (Operations, Administration, and Maintenance) server. It collects:
The process generally follows this sequence:
In LTE, handover is triggered by A3 events (neighbor becomes offset better than serving cell). Parameters like Time-to-Trigger (TTT), Hysteresis, and Cell Individual Offset (CIO) are statically configured or slowly adapted. However, user mobility patterns, interference, and cell loads change rapidly. A static configuration leads to suboptimal handovers. lte hmonitor upd
The HMon UPD framework proposes:
"LTE HMONITOR UPD" typically denotes an update or event from a Home/Health/HoPing monitor (HMONITOR) within an LTE network—often a periodic or triggered uplink message conveying measurement, performance, or state-change data. This guide explains likely meanings, how to interpret the fields, diagnostic steps, and actionable tips for troubleshooting and optimization. HMon sits at the eNodeB or a centralized
| Symptom | Possible Cause | Solution | |---------|----------------|----------| | HMonitor_UPD stops | UE not decoding SIB4/SIB5 | Check RF, disable DRX for test | | No neighbor updates | MeasurementReport not sent | Check event thresholds (A2, A3) | | Too many updates | Low TTT or no hysteresis | Increase TTT to 320 ms | | Wrong candidates | PCI conflict | Audit neighbor list, reset PCI |
For UPD = 160 ms, the UE reports the strongest neighbor 150 ms after it becomes viable. Meanwhile, the serving cell RSRP drops below -120 dBm, triggering RLF. This is termed “HMonitor update starvation”. Action: If the update concludes that a handover
Mobile Network Operators (MNOs) constantly change their band priorities and tower identifiers (Cell IDs). An old HMonitor might misinterpret a new 5G anchor band or fail to recognize a Band 12 LTE signal, causing the router to switch to a slower band unnecessarily.