In addition, the proposed HO mechanism uses an event A2 HO , which conducts HO when the RSRP of the serving cell eNB falls below the A2 HO threshold.
When an event A3 HO is used (which is the most commonly used HO scheme in LTE), HO is conducted whenever a new target eNB is detected because the difference in the RSRP of the serving eNB and the target eNB is used in determining the HO triggering point .
In LTE networks, the UEs periodically report the RSRP of neighboring eNBs to the serving eNB, and the serving eNB makes HO decisions based on these measurement reports .
Hence, in the first place, we are interested on accurately predicting the best connection the UE would select in idle mode and the RSRP field measurements it uses.
In our case, the field measurements representing the RSRP at a given location were collected using a small truck equipped with the spectrum analyzer Rohde & Schwarz, the functionality of which supports LTE signal analysis.
To minimize the deviation in the measured RSRP values, and the impact that small-scale fading has in larger-scale path loss , all field measurements were post-processed so that a single value, the median, was calculated for each of the measured locations.
City had been implementing a scheme similar to the RSRP
versus PUSCH Throughput (average and edge of cell)
For LTE, RSRP
is a important indicator to evaluate coverage.
When the RSRP of the serving eNB drops below the signal-to-interference-plus-noise ratio (SINR) threshold by HOM, the UE enters the HO region.
where RSRP is the reference signal received power and i and j indicate the serving and target eNB, respectively.
Parameter Value System carrier frequency, bandwidth 2 GHz, 5 MHz MeNB, HeNB antenna pattern omni-directional number of RBs 25 number of sub-carrier per RB 12 RSRP
sampling time interval 50 msec packet schedule proportional fair TTI 1 msec [alpha] 0.