congestion in RRC phase (RRC capacity)

[Mr_Piongly]

Hi all

in GSM system we have the SD channels that transport signalling traffic.
If we have blocks we can take a TS (time slot) dedicated for TCH and define it as new SD.
In this way we can improve accessibility

In UMTS we have RRC connection , but i don't understand when we will have blocks.
If we have only a carrier f1, how many simultaneous attempts are neccessary to have blocks ? how is it possible whe we need to expande the rrc connection capacity ?

thanks

[Walid Madih]

Hi all

in GSM system we have the SD channels that transport signalling traffic.
If we have blocks we can take a TS (time slot) dedicated for TCH and define it as new SD.
In this way we can improve accessibility

In UMTS we have RRC connection , but i don't understand when we will have blocks.
If we have only a carrier f1, how many simultaneous attempts are neccessary to have blocks ? how is it possible whe we need to expande the rrc connection capacity ?

thanks

in RRC it's not count by number the below cause can cause rejection:
- CAC because of UL/DL power
- NO CE availble
- No Iub resource.
- No Code available.

[zeezzoo]

Dear,

the Capacity in UMTS is related to : Codes , CEs , Downlink Power , RTWP (which is uplink interference = Load of the cell) and Iub Resources .

you can have blocked RRC (Rejected) when you don't have enough resources of at least one of the above mentioned .

first UE sends RRC Connection Request . then if the system has enough resources , it will send RRC Connection Setup (RRC Accepted) .

[riyantoyadi]

for RRC 4 parameter : Code, Power, CE and Iub that's all

[Mctest]

for RRC 4 parameter : Code, Power, CE and Iub that's all

Does the uplink interference influence on the RRC Connection capacity?

[Walid Madih]

Does the uplink interference influence on the RRC Connection capacity?

yes if ul cac is enable for ul power

[manson]

in RRC it's not count by number the below cause can cause rejection:
- CAC because of UL/DL power
- NO CE availble
- No Iub resource.
- No Code available.

How do we know, RRC blocking due to UL/DL power...?
And 4 of cause...
Anybody can explain it...?
Sorry, newbie..

[riyantoyadi]

Huawei have special counter about that :

VS.RRC.Rej.Power.Cong Failure of requesting for power resources.
VS.RRC.Rej.UL.CE.Cong Failure of requesting for uplink CE resources in a cell.
VS.RRC.Rej.DL.CE.Cong Failure of requesting for downlink CE resources in a cell.
VS.RRC.Rej.Code.Cong Failure of requesting for code resources.
VS.RRC.Rej.ULIUBBandCong RNC admission algorithm rejection due to congestion of the uplink Iub interface bandwidth.
VS.RRC.Rej.DLIUBBandCong RNC admission algorithm rejection due to congestion of the downlink Iub interface bandwidth.

hope it usefull

[Ummi]

very usefull info

[Irna]

How about RAB? is there any differences?