What is CIO offset?
Parameters Definition 1) Cell Individual Offset (CIO): This is a measurement quantity used to determine cell association, regulate cell coverage and usually incorporated in power measurement to control handover.
What is time to trigger in LTE?
The LTE standard supports several parameters to trigger the handover and select the target cells, such as hysteresis margin and Time-to-Trigger (TTT). When applying Time-to-Trigger, the handover is initiated only if the triggering requirement is fulfilled for a time interval.
What is hysteresis in LTE?
Hysteresis is the parameter which is used to make neighbor cell look worse than the current measured value. It helps to UE to make sure that neighbor cell is strong enough and if network triggers handover after receiving the measurement report from the UE, handover to target cell will be successful.
What is A3 event in LTE?
Event A3. The LTE Event A3 is triggered when a neighbouring cell becomes better than the serving cell by an offset. The offset can be either positive or negative.
What is Event A1 in LTE?
LTE Event A1 The LTE Event A1 is triggered when the serving cell becomes better than a threshold. The event is triggered when the following condition is true: MEAsserv – Hyst > Threshold. Triggering of the event is subsequently cancelled when the following condition is true: MEAsserv + Hyst < Threshold.
What is A2 event in LTE?
LTE Measurement Report Trigger (EVENT for Measurement Report)
| Event Type | Description |
|---|---|
| Event A2 | Serving becomes worse than threshold |
| Event A3 | Neighbour becomes offset better than serving |
| Event A4 | Neighbour becomes better than threshold |
| Event A5 | Serving becomes worse than threshold1 and neighbour becomes better than threshold2 |
What is offset and hysteresis in LTE?
Offset: this parameter is for serving cell should be better than neighbour cells before going to send measurement report, ensure that serving cell power should be good than neighbours. Hysteresis: this is for Neighboring cell should be better than serving.
What is A5 event in LTE?
What is Event A2 in LTE?
Event A2. The LTE Event A2 is triggered when the serving cell becomes worse than a threshold. The event is triggered when the following condition is true: MEAsserv + Hyst < Threshold. Triggering of the event is subsequently cancelled when the following condition is true.
What is LTE offset?
Time Offset shows the time offset from the beginning of the time capture to the beginning of the Measurement Interval. For example, when Time Offset = 5 ms and the Search Time trace starts at -8.3 ms, the beginning of the Measurement Interval is located at -3.3 ms within the Search Time trace.
What is Gap LTE?
In the case of LTE, the UE needs measurement gaps in order to perform inter-frequency and inter-RAT measurements. Typical LTE gap length is 6 ms which accommodates 5 ms measurement time (PSS and SSS are transmitted once every 5 ms) and RF re-tuning time of 0.5 ms before and after the measurement gap.