Hi All, can any one tell what are cons of fast dormancy?
FD or EFD?
More users will in FACH state
The objective of Fast Dormancy is to reduce the battery power consumption of the device . Fast dormancy behavior is characterized by the ratio of the number of RRC Signaling Connection Release Indications /the number of RAB establishment ,abbrivated as SCRI /RAB.
this is the concept , to reduce the battery , the special algorythm is behind it
The great benefits is the mobile no need to do all the process like when you stay in idle mode
If you don’t have the second channel FACH will affect the paging because maybe you have congestion on FACH channel
These are Pros!!
That’s a con
How to know, this feature is enabled in our network?
Before R8, fast dormancy was not standardized so RNC was putting UE to idle upon receiving SCRI. This was causing so called signalling storm. After R8, UEs sent SCRI with cause value indicating battery saving purpose so RNC could put such UEs in FACH or PCH state this eliminating the signaling storm
This eliminating = thus eliminating*
However pre R8 UEs still send SCRI without any cause and RNC release the UE to idle
However u can have an IMEI TAC list configured for such UEs on RNC, so that RNC can still put these pre R8 UEs to FACH/PCH state upon receiving SCRI
Check CELLPCH UE or URA PCH UEs
Great thanks. Does its effect any KPI? I think RRC sr will degrade
CSSR (Call Setup Success Rate)
As no of attempts also decrease
attempts less offcourse
Yes. RAB also? Or ony RRc part
Yes but thats not real degradation.
Need to balance, optimization is not solution to eliminate 100% problems or only improvements, again benefits vs degradation
EFD is basic feature for smart phone for OTT services
EFD = enhanced fast dormancy?
OTT? What is this?
over-the-top content (OTT) is the audio, video, and other media content delivered over the Internet without the involvement of a multiple-system operator (MSO) in the control or distribution of the content.