What is Interfrequency handover?
Inter-Frequency Handover means mobility in connected mode between two different cells and different LTE frequencies, This topic will be assigned to Event A4 which is used for LTE Inter-Frequency handover.
How do you increase VoLTE drop in LTE?
Consider activating features that will improve VoLTE retainability: TTI- Bundling, RRC connection re-establishment. Check parameter inconsistences associated with DRX settings, ROHC parametrisation, inactivity timers, etc. Check specific mobility parameterisation for QCI=1.
What is CSFB and Srvcc in LTE?
CSFB is a service handover procedure while SRVCC is a coverage handover procedure.
What is event A5 in LTE?
Event A5. LTE Event A5 is triggered when the serving cell becomes worse than threshold-1 while a neighbouring cell becomes better than threshold-2. The event is triggered when both of the following consitions are true: MEASserv + Hyst < Threshold-1.
What are the different types of handover in LTE?
In LTE there are three different types of handover can be possible Intra-LTE Handover: In this case source and target cells are part of the same LTE network. Inter-LTE Handover: Handover happens towards other LTE nodes. (Inter-MME and Inter-SGW) Inter-RAT Handover: Handover between different radio technologies.
Why do LTE UES have to go into compressed mode during handover?
In fact, when a handover is beginning, an LTE UE has to go into a ‘compressed mode’ where it listens to its current cell for part of the time and searches for a new cell the rest of the time.
Which LTE bands are suitable for roaming?
Networks on LTE band 20 (LTE-FDD) are suitable for roaming in ITU Region 1 only. Networks on LTE band 5 (LTE-FDD) are suitable for roaming in ITU Regions 2 and 3. Networks on LTE bands 38, 40 (LTE-TDD) may allow global roaming in the future (ITU Regions 1, 2 and 3).
What are superseded bands/LTE frequency bands?
Superseded bands are indicated by a grey background. There are regular additions to the LTE frequency bands / LTE spectrum allocations as a result of negotiations at the ITU regulatory meetings.