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.
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
Add a small outdoor cell in the same RAT & frequency.
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
N/W performance statistics
Anteena radiation gain per pixel
Anteena radiation gain per cell
Downlink load factor per cell
Downlink load factor per pixel
Automated n/w planning
Worst offenders detection
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.
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.
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.
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.
BTS Power Saving
Extended Range Cell
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
GSM-LTE cell reselection
GSM-LTE drop per minute improvement
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.
frequency planning optimization
power budget handover parameters
soft handover parameters
admission control parameters
multi-band handover handling parameters
Increase the number of SDCCH channels to relieve congestion.
Perform a new optimized frequency plan to relieve congestion.
Increase the GPRS reserved time slots to relieve congestion.
Enable the half-rate feature to reduce the load by allowing two users per time slot.
the customer complaint database
configuration management tools
propagation prediction tools
all network elements
It provides accurate dimensioning of every Iub interface.
It adapts the network configuration to every RF scenario.
It provides less complex network configuration.
It reduces hardware maintenance in the network.
Drive Less tuning automatically introduces autonomous "open loop" parameter optimization.
Drive Less tuning captures the in-building user experience.
Geo-location accuracy is higher than using a traditional drive test.
Drive Less tuning introduces Operational Expenditure (OpEx) reduction.
BTS hardware constraints
frequency allocation strategy
Sample each cell in a range of radio conditions.
Run the drive as fast as possible.
Uniformly sample the cluster.
Use high dense samples in border areas of the cluster.
performance management data from the OSS
Mean Opinion Score (MOS) data
digital elevation map
Multiple anteenas capture additional energy increasing the signal levels input to the reciever.
Multiple anteenas expierence different fading conditions which stastically lead to an overall improvement SINR
Multiple anteenas provide visual benefits which improves the chances of obtaining planning approvals for a site build.
Multiple anteenas provide rejection for transmission of nearby sites which use adjecent frequency band
To interface to the site backhaul transmission
To provide RF filtering to overcome reciever blocking & interference
To prepare DL transmission to send to the Radio unit.
To under take uplink basband processing of signals received from the radio units.
To aggrigate signals from multiple technologies for transmission over IP back haul.
The output power
The number of configured channel elements
The number of hopping time slots configured
The number of radio carriers configured
The vertical beam width of anteena
It keeps the uplink transmission power as high as possible according to the UE range.
It keeps the UE transmission power to maintain downlink BLER to the target value.
It equally shares the maximum available uplink margin among the connected users according to the servicesrequested.
It tries to keep the SIR close to the SIR target value as defined by the RNC.
You must have atleast two transmit anteenas on the cell
You must have two transmit anteena elements on the UE.
You must have atleast two receiving anteena elements on the cell.
You must have two receiving anteena elements on the UE.
Frequency diversity gain
Spatial diversity gain
Time diversity gain
Wavelength diversity gain
It is the process of tuning a transmitter's output freq to the designated cell.
It is the process of tuning multiple transmitter s to the designated output freq channels.
It is the process of tuning the propogation model based on freq usage.
It is the process of tuning the RF parameters per freq band.
To extend the battery life of MS.
To reduce the power consumtion of BTS.
To allow the UL channel sharing during non-transmission time slot.
To improve the UL interference by halting the transmission.
Soft & softer HO are available for both in HSPA & EUL.
Softer but not soft HO is available for both HSPA & EUL
No intra freq HO mobility is allowed on HSPA &EUL.
Soft & softer HO are available in EUL but not in HSDPA.
Link adptation dynamically adjust the modulation scheme and coding rate used over the air interface to maximize data thrput based on radio conditions
Link adptation dynamically adjust the modulation scheme and frequecny used over the air interface to maximize data thrput based on radio conditions
Link adptation dynamically adjust the coding rate and frequecny used over the air interface to maximize data thrput based on radio conditions
Link adptation dynamically adjust the PRACH rooot sequency and frequecny used over the air interface to maximize data thrput based on radio conditions
Link budget is reduced when interference decreases
Quality degrades when intercell interference increases.
Thrpt per user decreases when traffic increases.
Cell size decreases when intracell interference increases.
A data trasnmission from users in other cells
A data trasnmission from users in same cells
In-band signals transmitted by other base stations
Random access attempts from users in the same cell.
2 X 20W
2 X 40W
2 X 60W
2 X 80W
It is a process that only blocks guranteed bit rate traffic from handling over into a cell.
It is a process that allows rate reduction or pre-emption of lower priority user to allow admission of more users in the cell.
It is aprocess which constantly monitors dynamic resources like non-hsdpa dl 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 admission attempts.
Initial access to a cell.
HO between cells
Data transmission in DL.
Re-establishment of a radio link after radio link failure
Change HO parameters to balance traffic in colocated cells.
Change HO parameters to balance traffic to its ajecent cells with in same band.
Adjust the adminssion control parameters to allow more users to be accepted in the cell
Impelent the half rate feature.
Overlaid/underlaid sub cell
BTS power saving
Extended range cell
To realise DCH resources
To enable power control in the cell
To decrease UE power consumtion
To increase the time to declare radio link failure.
Apply downtilt using electrical tilt
Apply uptilt using electrical tilt
Apply downtilt using mechanical tilt
Apply uptilt using mechanical tilt
Horizontal beamwidth =12 degree.
Horizontal beamwidth =65 degree.
Horizontal beamwidth =90 degree.
Horizontal beamwidth =110 degree.
Drive less tuning automatically introduces atonomous open loop parameter optmization.
Drive less tuning captures in building user expereince
Geo- location accuracy is higher than using traditional DT.
Drive less tuning introduces operational cost(opex)
BTS hardware constraints
Freq allocation strategy
Long calls( 5 minute + 5 minutes idle)
Short calls( 15 seconds + 15 seconds idle)
No call ( idle state)
Other Operator Traffic Volume
Other Operator DL RX-Level Volume
Both will share same carrier bandwidth
Both will share same antenna tilts
Both will share same cell EIRP
Both will share same antenna azimuth
M - 0 & E - 0
M - 0 & E - 1
M - 0 & E - 6
M - 6 & E - 0
Analog to digital converter.
D) RF modulation & demodulation.
DL=40Mbps & UL = 40Mbps
DL = 20Mbps & UL = 20Mbps.
DL = 40Mbps & UL = 20Mbps
DL = 40Mbps & UL = 30Mbps.
Drive Test Measurements.