What limits the Coverage? – LTE RF Optimization
What limits the Coverage?
Downlink coverage is limited by the maximum amount of power that can be applied to the downlink reference signals. However, the LTE standards do not specify how much power the various channels and reference signals should use; instead it is up to the eNB vendor to develop the appropriate algorithms and controls.
In general, the goal is to keep a constant Energy Per Resource Element (EPRE) so that the UEs can use RS measurements to estimate the power of other downlink channels.
However, the EPRE is not exactly the same in all resource elements because different modulation schemes require different power levels.
Uplink power is distributed to the PUCCH, the PUSCH, and the DM RS of each channel. The UEs peak output power capability determine the uplink coverage limit.
You may also like to go throughWhat is RF Optimization?,4G-LTE KPIs,3GPP Accessibility KPI,Retainability KPI in LTE, Throughput KPI & Latency KPI, Mobility KPI, Cell Availability KPI in LTE, Coverage of an LTE Cell, Cell-specific DL Reference Signal, UE Measurement- Reference Signal Received Power (RSRP), RSRQ and SINR, Coverage Analysis in LTE and What is the “right” coverage.