3GPP2
ITU
3GPP
IETF
To advice a UE that the system is ready for new originating call
To advice a UE about important changes in the system information.
To advice a UE of a terminating text message.
To advice a UE that the load is reaching its maximum allowed value.
1.25 mhz
1.4 mhz
3 mhz
7.5 mhz
10 mhz
3GPP2
ITU
3GPP
IETF
UE
ENB
MME
S-GW
AMR improves the mean opinion score (MOS) by selecting the proper modulation based on the road channel quality.
AMR extends the radio coverage by adapting the robustness to channel orrors.
Any bit rate below 12.2 kbps is available for call setup.
Both full rate & half rate are allowed when using AMR
7 km
15 km
30 km
80 km
Add a small outdoor cell in the same RAT & frequency.
InStall TMA/RRU
Decrease anteena height
Offlaod traffic to a different RAT
Automatically adjust individual cell offset
Automatically setup WCDMA neighbor relations
Prevent PCI conflicts occuring
Remove unused neighbor relations
Automatically setup realtions when needed
The TA command send to the enb will increase
The TA command send to the UE will increase
The TA command send to the ENB will decrease
The TA command send to the UE will decerease
Implement new scrambling code plan
Reduce CPICH power of detected Cell
Reduce CPICH power of new site
Adjust intercell ho parametr in both sites
Impelement a new BSIC plan
Impelement a new BCCH plan
Impelement a new MAIO plan
Impelement a new PSC plan
Sector name BSIC-MAIO mapping
Sector name BCCH-MAIO mapping
Sector name BCCH-BSIC mapping
BCCH BSIC-MAIO mapping
Geo sector location
MOS statistics
N/W performance statistics
Interference matrix
Anteena radiation gain per pixel
Anteena radiation gain per cell
Downlink load factor per cell
Downlink load factor per pixel
Automated n/w planning
Coevarage prediction
Worst offenders detection
Performance monitoring
Cell A is 3 dB higher EIRP than Cell B.
Cell A has the same EIRP as Cell B.
Cell A is 3 dB lower EIRP than Cell B.
Cell A is 6 dB lower EIRP than Cell B.
UE uses several radio links which require less channelization codes.
Can reduce UE transmit power.
UE uses less resources on the IuB and Iur interfaces.
Overcomes fading through macro diversity.
Active Set
Monitored Set
Connected Set
Detected Set
Idle Set
-20 dB
1.2 dB
3.33 dB
20 dB
RACH
FACH
BCCH
SDCCH
SC-FDMA separates uplink transmissions in the time and/or frequency domain.
SC-FDMA is beneficial because it avoids intra-cell interference.
SC-FDMA is beneficial because it avoids inter-cell interference.
SC-FDMA allows simultaneous uplink transmissions on the same physical resource blocks.
TCH
SDCCH
SCCH
BCCH
2x2 MIMO can double downlink throughputs in areas of low SINR when the two data streams are transmitted from co-polar antenna elements.
2x2 MIMO can double downlink throughputs in areas of low SINR when the two data streams are transmitted from cross polar antenna elements.
2x2 MIMO can double downlink throughputs in areas of high SINR when the two data streams are transmitted from co-polar antenna elements.
2x2 MIMO can double downlink throughputs in areas of high SINR when the two data streams are transmitted from cross polar antenna elements.
Physical Uplink Control Channel (PUCCH)
Physical Uplink Shared Channel (PUSCH)
Physical Downlink Control Channel (PDCCH)
Physical Random Access Channel (PRACH)
It is the process of tuning a transmitter’s output frequency to a designated channel.
It is the process of tuning multiple transmitters to designated output frequency channels.
It is the process of tuning the propagation model based on frequency usage.
It is the process of tuning the RF parameters per frequency band.
Link budget is reduced when interference decreases.
Quality degrades when intercell interference increases.
Throughput per user decreases when traffic decreases.
Cell size decreases when intracell interference increases
cell breathing increases
cell breathing decreases
power per user increases
power per user decreases
to extend the battery life of the MS
to reduce the power consumption of the BTS
to allow the uplink channel sharing during non-transmission time slots
to improve the uplink interference by halting the transmission
Regular open loop power control is used.
Inner closed loop power control is used.
Outer loop power control is used.
Dynamic power control is not used.
SRVCC
VoLTE
CSFB
RoHC
16 QAM
GMSK
64 QAM
QPSK
Trigger mobility procedures during a speech connection.
Take into account the timing advance to adjust the BTS timing.
Trigger the location area update procedure.
Control the MS transmitted power during a speech call.
The cell transmit antennas have been connected in cross polar.
The cell transmit antennas have been connected in co-polar.
Both feeders have been swapped with an adjacent cell.
One feeder has been swapped with an adjacent cell.
When the pathloss is high, the Ping test protocol ceases working so that the UE can transmit control signaling to the BTS.
When the pathloss is high, the BTS allocates fewer physical resource blocks in the downlink increasing data transmission times.
When the pathloss is high, the block error rate (BLER) increases which leads to HARQ retransmissions increasing total transmit times.
When the pathloss is high, the physical distance to the base station is always much larger.
Overlaid/Underlaid Subcell
BTS Power Saving
Extended Range Cell
Directed Retry
to relieve localized congestion problems
to increase the 3G-2G handover success rate
to reduce the ping pong effect in the 3G-2G idle reselection process
to increase HSDPA throughput
Increase the CPICH power in the surrounding cells.
Increase the soft handover window in the surrounding cells.
Increase the downtilt in the surrounding cells.
Increase the admission control thresholds in the surrounding cells.
A lack of uplink channel elements during busy hours is causing both high uplink interference and iRAT handovers.
Pilot pollution due to traffic load is causing high uplink RTWP peaks at the busy hour.
External interference is causing high uplink noise during low traffic hours.
iRAT handover signaling load is increasing the uplink noise.
GSM to LTE handover procedures
CS fallback
GSM-LTE cell reselection
GSM-LTE drop per minute improvement
timing advance
RxLev
interference matrix
RxQual
The RS location is shifted in frequency to ensure that all cells transmit RS on the same frequency.
The RS location is shifted in time to ensure that the Primary Synchronization Signal (PSS) in adjacent cells is transmitted in different sub-frames.
The RS location is shifted in frequency to avoid clashing with RS transmitted by adjacent cells.
The RS location is shifted in time to ensure that RS avoids clashing with traffic channels on adjacent cells.
It is a process that only blocks guaranteed bit rate traffic from handing over into a cell.
It is a process that allows rate reduction or pre-emption of lower priority users to allow admission of more users on the cell.
It is a process that constantly monitors dynamic resources like Non-HSDPA downlink transmitted carrier power to ensure that these are not overloaded by existing users on the cell.
It is a process that disconnects inactive users to allow new admission attempts.
initial access to a cell
handover between cells
data transmissions in the downlink
transmission of sounding reference symbols
re-establishment of a radio link after a radio link failure
The target cell should be declared as an inter frequency neighbor of the source cell.
The RAB Establishment should come from IDLE mode using SRB.
The path loss should be above the configured threshold.
There should be differences in the services supported by the source cell and target cell.
It improves uplink coverage by scheduling all HARQ redundancy versions in a row to minimize delay.
It improves mobile broadband user experience when the cell has high VoIP load.
It improves VoIP capacity for a specific mobile broadband load.
It reduces delay by decreasing the size of a VoIP packet to reduce the need for buffer status reports.
LTE users can maintain a 3G speech call between LTE and other RATs.
LTE users are redirected to another RAT if poor coverage is detected on the LTE network.
Specific users are given high priority to ensure higher retainability.
Specific users are given high priority to ensure higher accessibility.
Decrease base station transmission power.
Investigate external interference.
Add a pico cell in the same RAT and frequency.
Run a PIM analysis.
handover optimization
frequency planning optimization
traffic balance
reselection optimization
power budget handover parameters
soft handover parameters
admission control parameters
multi-band handover handling parameters
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