Accessibility
RAB connection measurement per cell
Overview
The CN in CS domain initiates the radio access bearer setup procedure by sending a RAB ASSIGNMENT REQUEST message to the RNC.
After receiving the RAB ASSIGNMENT REQUEST message, the RNC selects an appropriate cell, allocates resources, and performs
admission control based on the information in the message (such as service type, QoS, and priority), the traffic load of the system,
and the networking strategy (such as DRD). The requirements of high-priority users are met preferentially(That is, when the
resources are insufficient and the UEs with low-priority cannot set up the RAB, the RNC sends to the CN a RAB ASSGNMENT
RESPONSE message if the queuing algorithm is enabled, indicating that the RAB is in the queue to wait for resources).If the
admission of the RAB succeeds, the RNC starts the Iu transport connection setup procedure, the Iub radio bearer setup procedure,
and the Uu radio bearer setup procedure. At last, the RNC sends to the CN a RAB ASSNMENT RESPONSE, indicating whether the RAB
setup is successful.
If DRD is enabled during the RAB setup, the RAB setup measurement is performed on the DRD target cell. Otherwise, the RAB setup
measurement is performed on the DRD source cell.
The RAB setup procedure is as follows:
Figure 1 RAB Setup Flow
CS Attempt Measurement points
A
B
C
H
I
J
PS Attempt Measurement points
A
B
H
I
J
CS Failure Measurement points
E
N
F
G
K
PS Failure Measurement points
E
N
F
G
K
Counter Relationship
Counter
Description
VS.RAB.AttEstabCS.Conv, VS.RAB.AttEstabCS.Str
VS.RAB.AttEstab.AMR, VS.RAB.AttEstabCS.AMRWB, VS.RAB.AttEstCS.Conv.64
VS.HSPA.RAB.AttEstab.CS.Conv, VS.RAB.AttEstabCS.VPLimit
VS.RAB.SuccEstabCS.Conv, VS.RAB.SuccEstabCS.Str
VS.RAB.SuccEstabCS.AMR, VS.RAB.SuccEstabCS.AMRWB, VS.RAB.SuccEstCS.Conv.64
VS.HSPA.RAB.SuccEstab.CS.Conv
Description
VS.RAB.AttEstabPS.Bkg, VS.RAB.AttEstabPS.Conv, VS.RAB.AttEstabPS.Int,
VS.RAB.AttEstabPS.Str
VS.RAB.AttEstab.PSR99
VS.RAB.SuccEstabPS.Bkg, VS.RAB.SuccEstabPS.Conv, VS.RAB.SuccEstabPS.Int,
VS.RAB.SuccEstabPS.Str
VS.RAB.SuccEstab.PSR99
VS.RAB.SuccEstabPS.0kbps
Description
VS.RAB.FailEstabCS.DLIUBBand.Cong, VS.RAB.FailEstabCS.ULIUBBand.Cong,
VS.RAB.FailEstabCS.ULCE.Cong, VS.RAB.FailEstabCS.DLCE.Cong,
VS.RAB.FailEstabCS.ULPower.Cong, VS.RAB.FailEstabCS.DLPower.Cong,
VS.RAB.FailEstabCS.Code.Cong
VS.RAB.FailEstabCS.TNL
VS.RAB.FailEstabCS.IubFail
VS.RAB.FailEstabCS.UuFail, VS.RAB.FailEstabCS.RBIncCfg,
VS.RAB.FailEstabCS.RBCfgUnsup, VS.RAB.FailEstabCS.UuNoReply,
VS.RAB.FailEstabCS.PhyChFail
VS.RAB.FailEstabCS.RNL, VS.RAB.FailEstabCS.TNL
Description
VS.RAB.FailEstabPS.DLIUBBand.Cong, VS.RAB.FailEstabPS.ULIUBBand.Cong,
VS.RAB.FailEstabPS.ULCE.Cong, VS.RAB.FailEstabPS.DLCE.Cong,
VS.RAB.FailEstabPS.Code.Cong, VS.RAB.FailEstabPS.ULPower.Cong,
VS.RAB.FailEstabPS.DLPower.Cong
VS.RAB.FailEstabPS.TNL
VS.RAB.FailEstabPS.IubFail
VS.RAB.FailEstabPS.UuFail, VS.RAB.FailEstabPS.UuNoReply,
VS.RAB.FailEstabPS.RBIncCfg, VS.RAB.FailEstabPS.RBCfgUnsupp,
VS.RAB.FailEstabPS.PhyChFail
VS.RAB.FailEstabPS.RNL, VS.RAB.FailEstabPS.TNL
Sub Counter
VS.RAB.AttEstab.AMR
VS.RAB.AttEstabCS.AMR.12.2
VS.RAB.AttEstCS.AMR.7.95
VS.RAB.AttEstCS.AMR.4.75
VS.RAB.SuccEstabCS.AMR
VS.RAB.SuccEstabCS.AMR.12.2
VS.RAB.SuccEstCS.AMR.7.95
VS.RAB.SuccEstCS.AMR.4.75
Counter
VS.RAB.FailEstabCS.Unsp
VS.RAB.FailEstabCS.Cong
VS.RAB.FailEstabCS.UuFail
VS.RAB.FailEstabCS.RNL
Counter
VS.RAB.FailEstabPS.UuFail
VS.RAB.FailEstabPS.RNL
VS.RAB.FailEstabPS.Unsp
Sub Counter
VS.RAB.FailEstabCS.Cong
VS.RAB.FailEstabCS.DLIUBBand.Cong
VS.RAB.FailEstabCS.ULIUBBand.Cong
VS.RAB.FailEstabCS.ULCE.Cong
VS.RAB.FailEstabCS.DLCE.Cong
VS.RAB.FailEstabCS.Code.Cong
VS.RAB.FailEstabCS.ULPower.Cong
VS.RAB.FailEstabCS.DLPower.Cong
VS.RAB.FailEstabCS.RBIncCfg
VS.RAB.FailEstabCS.RBCfgUnsup
VS.RAB.FailEstabCS.UuNoReply
VS.RAB.FailEstabCS.PhyChFail
VS.RAB.FailEstabCS.IubFail
VS.RAB.FailEstabCS.UuFail
Sub Counter
VS.RAB.FailEstabPS.RBIncCfg
VS.RAB.FailEstabPS.RBCfgUnsupp
VS.RAB.FailEstabPS.UuNoReply
VS.RAB.FailEstabPS.PhyChFail
VS.RAB.FailEstabPS.IubFail
VS.RAB.FailEstabPS.UuFail
VS.RAB.FailEstabPS.Cong
Measurement of CS RAB assignment modification per cell
Overview
If the parameters, such as QoS, of a CS service are changed after the RAB is set up, the CN sends to the RNC a RAB
ASSIGNMENT REQUEST message. After receiving this message, the RNC initiates the RAB modification procedure. If the
RAB modification succeeds, the RNC sends to the CN a RAB ASSIGNMENT RESPONSE message indicating that the RAB
modification succeeds. If the RAB modification fails, the RNC sends to the CN a RAB ASSIGNMENT RESPONSE message
indicating that the RAB modification fails.
For details, see 3GPP TS 25.331 and 3GPP TS 25.413.
Measurement Counters
ID
Counter
67179840 VS.RAB.FailModCS.TNL
Description
Original Release
Number of Failed CS RAB Modifications Due to Iu Transport Connection Earlier than
Setup Failure for Cell
V900R011
67179835 VS.RAB.AttEstModCS.Conv Number of RAB Modification Requests for CS Conversational Services
for Cell
Earlier than
V900R011
67179836 VS.RAB.AttEstModCS.Str
Number of RAB Modification Requests for CS Streaming Services for
Cell
Earlier than
V900R011
67179837 VS.RAB.SuccModCS.Conv
Number of Successful CS RAB Modifications for Conversational Services Earlier than
for Cell
V900R011
67179838 VS.RAB.SuccModCS.Str
Number of Successful CS RAB Modifications for Streaming Services for
Cell
Earlier than
V900R011
73393839 VS.RAB.FailModCS.RNL
Number of Failed CS RAB Modifications Due to Radio Network Layer
Cause for Cell
V900R012
Measurement of PS RAB assignment modification per cell
If the parameters, such as QoS, of a PS service are changed after the RAB is set up, the CN sends to the RNC a
RAB ASSIGNMENT REQUEST message. After receiving this message, the RNC initiates the RAB
modification procedure. If the RAB modification succeeds, the RNC sends to the CN a RAB ASSIGNMENT
RESPONSE message indicating that the RAB modification succeeds. If the RAB modification fails, the RNC
sends to the CN a RAB ASSIGNMENT RESPONSE message indicating that the RAB modification fails.
For details, see 3GPP TS 25.413.
Measurement Counters
ID
Counter
Description
Original Release
67179943 VS.RAB.FailModPS.TNL
Number of Failed PS RAB Modifications Due to Iu Transport Connection Failure for
Cell
Earlier than
V900R011
67179937 VS.RAB.AttEstModPS.Bkg
Number of RAB Modification Requests for PS Background Services for Cell
Earlier than
V900R011
67179934 VS.RAB.AttEstModPS.Conv Number of RAB Modification Requests for PS Conversational Services for Cell
Earlier than
V900R011
67179936 VS.RAB.AttEstModPS.Inter Number of RAB Modification Requests for PS Interactive Services for Cell
Earlier than
V900R011
67179935 VS.RAB.AttEstModPS.Str
Number of RAB Modification Requests for PS Streaming Services for Cell
Earlier than
V900R011
67179941 VS.RAB.SuccModPS.Bkg
Number of Successful RAB Modifications for PS Background Services for Cell
Earlier than
V900R011
67179938 VS.RAB.SuccModPS.Conv
Number of Successful RAB Modifications for PS Conversational Services for Cell
Earlier than
V900R011
67179940 VS.RAB.SuccModPS.Inter
Number of Successful RAB Modifications for PS Interactive Services for Cell
Earlier than
V900R011
67179939 VS.RAB.SuccModPS.Str
Number of Successful RAB Modifications for PS Streaming Services for Cell
Earlier than
V900R011
73393840 VS.RAB.FailModPS.RNL
Number of Failed PS RAB Modifications Due to Radio Network Fault for Cell
V900R012
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