What are fast fading and slow fading?

Fast fading is also called multi-path fading, as a result of multi-path propagation.  When multi-path signals arriving at a UE, the constructive and destructive phases create a variation in signal strength.

Slow fading is also called shadowing.  When a UE moves away from a cell the signal strength drops down slowly.

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Detail Doc on Layer 3 Messages

Call Flow with Layer 3 Messages on Ericsson System

Cell Azimuth-Mapinfo Tool

If you want to create a azimuth than its a very good tool for that.

You can try it.

Download From here

Plan Checker A Mapinfo Frequency Planning Tool

Very Good Tool Developed by Nokia for Frequency Planning.
Plan_Checker7v3 By DayantiPratiwi

Plan Checker

Features:

• Verify Frequency Planning
• Useful for New Frequency Planning
• Verify Neighbor Data or Neighbor Relation
• And lots more on Drive Test Analysis

Click Here to Download.

Distance Calculator Tool for RF Engineers

Distance Calculator Tool for RF Engineers

Very Good tool You can Download.

Distance Calculator.

Its calculate distance between two latitude and longitude.

Download Link

Brief describe the advantages and disadvantages of soft handover?

Advantages:

·         Overcome fading through macro diversity.

·         Reduced Node B power which in turn decreases interference and increases capacity.

·         Reduced UE power (up 4dB), decreasing interference and increasing battery life.

Disadvantages:

·         UE using several radio links requires more channelization codes, and more resources on the Iub and Iur interfaces.

More Dowload For You:

Actix Tutorial

Why is there soft handover gain?

Soft handover gain comes from the following:

• Macro diversity gain over slow fading.
• Micro diversity gain over fast fading.
• Downlink load sharing over multiple RF links.  By maintaining multiple links each link could transmit at a lower power, resulting in lower interference therefore a gain.

Just for you:

Download WCDMA IRAT Handover Document.

Download Documnet on GSM to WCDMA Handover

Sometimes we say Ec/Io and sometimes we say Ec/No, are they different?

Io = own cell interference + surrounding cell interference + noise density

No = surrounding cell interference + noise density

That is, Io is the total received power density including CPICH of its own cell, No is the total received power density excluding CPICH of its own cell.  Technically Ec/Io should be the correct measurement but, due to equipment capability, Ec/No is actually measured.  In UMTS, Ec/No and Ec/Io are often used interchangeably.

Explore more:

KPI Monitoring and Improving Guide