The document lists various counter names and sub counter names related to failed RRC connection preparations in a network, along with explanations of the causes and proposed solutions. Key reasons for failures include congestion or shortages of resources like codes, power, capacity elements and interference issues. Solutions generally involve expanding resources, balancing traffic loads between cells, adding new cells or carriers and addressing transmission problems. Hardware failures are also cited as a potential cause in some cases.

1. Counter Name Sub Counter Name Counter explanation Cause & Solution
C310080064
Number of failed RRC
connection preparation,Due To
Rl setup FAIL
Rl setup FAIL
1. CE shortage；need CE
expansion
2. Check alarm for more
information
C310080065
Number of failed RRC
connection preparation, Due
To Rl setup expiry.
Due To Rl setup expiry Transmission problem
C310080067
Number of failed RRC
connection preparation, Due
To Codes
CODE Shortage
Code shortage, need traffic
balance, add new cell, second
carrier
C310080068
Number of failed RRC
connection preparation, Due
To DL POWER Shortage
DL POWER Shortage
Power shortage, need traffic
balance, add new cell, second
carrier
C310080069
Number of failed RRC
connection preparation, Due
To UL Interfere
UL Interference
Check the reason for RTWP
increase, follow the
interference shooting
document
C310080070
Number of failed RRC
connection preparation, Due
To UL CE Shortage
UL CE
CE shortage；need CE
expansion
C310080071
Number of failed RRC
connection preparation, Due
To DL CE Shortage
DL CE
CE shortage；need CE
expansion
C310080072
Number of failed RRC
connection preparation, Due
To RNC Internal Reasons
/ / RL setup fail, Due to RNC
1. RCB OVERLOAD
2. DSP on RUB not config IP
address
C310080077
Number of failed RRC
connection preparation,Due To
Iub RlSetup TbFail
Iub Transmission Fail Transmission problem
C310080078
Number of failed RRC
connection preparation,Due To
Iub RlSetup TbCacFail
Iub Transmission access Fail Transmission problem
C310080079
Number of failed RRC
connection preparation,Due To
Iub UP Fail
IUB Use Plane Fail Transmission problem
C310086446
Number of failed RRC
connection preparation,Due To
CN
C310086447
Number of failed RRC
connection preparation, Due
To CN Overload
CN OVERLOAD CN OVERLOAD
C310080167
Number of failed RRC
connection access, due to
Radio Interface Synch.
/ /
Have Sent RRC Connection
Setup,
But do not received RRC
Connection Setup Complete or
Radio Link Restore
CAUSE:
DSP Failed
Other hardware problem
RRC lodebalance strategy
Timer for RL restore is to short
SOLUTION: change hardware
to check if it is the problem
1. change the site CMP
2. change resource shelf
priority
if it worked, need upgrade or
repalce
Radio interface failure has
been attributed to some
hardware failures(in sympathy
with traffic as what happened
at site selbone Park (BPC),
Nguboyenja (RRU))
C310080063
Number of failed RRC
connection preparation, NodeB
C310080066
Number of failed RRC
connection preparation, Due
To Admission Control
C310080076
Number of failed RRC
connection preparation, Due
To Trans

2. C310080168
Number of failed RRC
connection access, due to
timeout of Uu interface
/ /
Have sent RRC Connection
Setup, but do not receiced
RRC Connection Setup
Complete, but received Radio
Link Restore
N/A
Meanwhile, UU interface may
require some downtilt
adjustments and that is what I
will be doing for those cells
with more than 100 RRC setup
blocked due to UU interfac
C310080169
Number of failed RRC
connection access, due to
RNC Inner Reasons
/ /
Have sent RRC Connection
Setup,but do not received RRC
Connection Setup Complete,
because of RNC
N/A