Steps of RF Optimization

What ar the steps of RF Optimization?

The major steps utilized in RF optimisation ar preparation, knowledge assortment, knowledge analysis, and modification and realization.

1.Preparation of RF optimisation

First of all build the target of the optimisation KPI , divide the sites in clusters, build the a glance at} route, and collect tools and prepare documents for the RF optimisation able to positive the} swish operation of RF optimisation.

Ø Prepare the optimisation objective

Make the optimisation objective of the RF-related KPI indexes,including the coverage quantitative relation, soft football play quantitative relation, and pilot pollution quantitative relation,which compose the network optimisation acceptance indexes.

Ø Divide web site in clusters

Divide the sites into totally different cluster. usually the sites settled in same neighborhood ar classified in {an exceedingly|in a very} same cluster.Perform the cooccurring RF optimisation for a gaggle {of {site|website|web web site}s|of net sites|of websites} rather than one site. The cooccurring RF optimisation for a gaggle {of sites|of net sites|of websites} ensures that co-frequency interference between adjacent cells is taken into account within the network optimisation.

Ø verify the DT route

Before beginning a Drive a glance at}, the DT route is created for confirming whether or not the Network meets acceptance KPIs necessities. If the DT route for network acceptance is already scheduled , make {sure that} the scheduled route contains the route for confirming whether or not the network meets acceptance KPIs necessities.

2. knowledge assortment

Collect the MS/AT knowledge by the Drive a glance at}, indoor a glance at}, and sign tracing, and verify that the KPI necessities ar met supported the decision tracing knowledge and configuration knowledge of the BSC or access network (AN). This knowledge is additionally used for knowledge analysis. 

Ø Drive a glance at}

During network readying, network optimisation is usually performed underneath the blank condition of the network. Perform voice service or knowledge service tests for the network within the consistent with the service varieties within the network designing space. Use DT tools to gather the radio signals for analyzing the outside signal coverage, handoff, and pilot pollution issues.

After the communication network is place into operation, the network load additionally be|is also} significant. Hence, network tests within the loaded condition ar needed. once finishing the network optimisation within the blank condition, perform a a glance at} to verify that the standard of the network within the loaded condition meets the wants. the info assortment for the network within the loaded condition is analogous thereto for the network within the blank condition.

Ø Indoor a glance at}

The services to be a glance at}ed by the indoor check should be provided within the seamless coverage network consistent with the contract (for the business office) or designing report (for the trial office). the tactic of indoor a glance at} is that the same as that of the DT. an enclosed a glance at} is performed to check the signal coverage within the indoor coverage areas (such as in building, grocery, and underground train), important places (such as gymnasium and governmental offices), and a few special a glance at} areas (such as vital person|VIP|high-up|dignitary|panjandrum|high muckamuck|important person|influential person|personage} areas) to get, analyze, and solve RF issues.

Ø BSC Configuration knowledge assortment

Before and through RF optimisation, collect the configuration knowledge concerning the adjacent cells for network optimisation and collect extra configuration knowledge from BSC. Then, check whether or not the prevailing configuration knowledge is per the previous knowledge record and {therefore the|and additionally the} designing knowledge.

3.Data Analysis

Find out the issues of the network, specialize in the coverage, pilot pollution, and football play issues, and take corresponding modification measures.

Ø Coverage Analysis

that specialize in signal distribution, the coverage analysis could be a key task of RF optimisation. The coverage analysis includes the dominant cell analysis, downlink coverage analysis, and transmission coverage analysis.

ü No signal or poor signal coverage

If no signal is detected in {an exceedingly|in a very} cell consistent with the DT, the BTS could haven't any transmit power or the antennas additionally be|is also} blocked throughout the a glance at}.

ü Cross-cell coverage

If the signals from a cell may be received within the close cells, the Coverage of this cell is {just too|is merely too} wide.The cross-cell coverage additionally be|is also} caused by improper web site height or improper settings of antenna tilt angles. The cross-cell coverage cells interfere with adjacent cells. and {therefore the|and additionally the} interference causes the decrease of system capability. in a position to} increase the antenna angle or lower the antenna height to resolve the cross-cell coverage downside. whereas determination the cross-cell coverage downside, avoid the existence of no signal coverage space.

ü No-dominant cell space

The no-dominant-cell space refers to the realm that has no dominant cell or the dominant cell changes oftentimes. No dominant cell ends up in frequent handoffs, reduces the system potency, and will increase the decision drop quantitative relation.You can modify the antenna angle and AZ, enhance the coverage of a powerful signal cell (or the near cell), and cut back the coverage of alternative weak signal cells (or the remote cells) to resolve the no dominant cell downside.

ü Downlink coverage analysis

Analyze pilot signal strength and Rx power collected by the DT. If the pilot signal Rx power is smaller than the thresholds, downlink coverage issues could exist. Mark the realm while not signal coverage within the downlink and analyze the gap between the realm and adjacent BTSs. Analyze the close surroundings of the realm and check whether or not the distribution of Rxs in adjacent sites is traditional. once the analysis, in a position to} decide whether or not the downlink coverage may be improved by modifying antenna angle and AZ. Check whether or not a replacement new} space while not signal coverage exists once the coverage downside of a no signal coverage space is resolved by modifying the antenna. If the antenna modification cannot solve the issues concerning no signal coverage areas, add ton of} sites.

ü transmission coverage analysis

Analyze Texas power collected by the DT.If the Texas is on {top of|over|more than|beyond} the edge, transmission coverage issues could exist. Mark the areaswithout transmission coverage and check whether or not downlink coverage is additionally unprocurable in thoseareas. once each transmission and downlink coverage is poor, the downlink coverage issuestake precedence over the transmission coverage issues. If solely transmission coverage is poor, youcan solve the matter by eliminating the impact of transmission interference, modifying theantenna AZ and angle, or adding the tower mounted electronic equipment (TMA).

Ø Interference Analysis

The interference analysis includes the transmission interference analysis and downlink interference analysis. The interference affects the cell capability and even ends up in the decision drops and access failures.

ü Downlink interference analysis

Analyze the pilot strength Ec/Io collected by the DT.If the Ec/Io is not up to the edge, transmission interference could exist. Mark the areas withpoor Ec/Io and check whether or not downlink Rx coverage is unprocurable in these areas. If downlink Rx coverage is poor, the coverage downside exits. Analyze the causes and so solve the matter. If Rx coverage is nice however the Ec/Io worth is smaller than the edge, downlink interference exists. Analyze the interference causes and so solve the matter.

Perform the subsequent steps to investigate pilot pollution:

1. ensure the pilot pollution areas.

2. Analyze that cells cause the pilot pollution within the stress space.

3. Analyze the Rx and {therefore the|and additionally the} Ec/Io distribution within the cells associated with pilot pollution. Confirm

the cells wherever the coverage has to be reduced or improved, and supply solutions to the

pilot pollution.

Ø football play Analysis

In RF optimisation, closeness optimisation and soft football play quantitative relation management involve handoffs. By modifying RF parameters, in a position to} management the scale and {therefore the|and additionally the} position of the football play space to cut back decision drops because of dramatic signal modification. This improves the football play success quantitative relation.

The optimisation of the adjacent cell list concentrates on the missing configuration of adjacent cells. Use Nastar to ascertain the neighbor cell info and provides suggestions concerning adding, removing, or keeping neighbor cells for every cell.

optimisation of sentimental football play quantitative relation too high soft football play quantitative relation wastes system resources and reduces system capability. throughout RF optimisation, positive the} cowl rage,and management the soft football play quantitative relation inside a suitable vary. in a position to} cut back or changethe soft football play region by increasing the lean angle, modifying the AZ, lowering the antenna, or reducing pilot power.