What are the conditions you typically set to trigger IRAT handover?

RSCP and Ec/Io are used to trigger IRAT handover:

1.       RSCP ≤ -100dBm.

2.       Ec/Io ≤ -16dBm.

Find more document on IRAT
WCDMA IRAT Handover
Details on IRAT Parameter Optimization Document

How many channelization codes are available?

The number of channelization codes available is dependent on the length of code.  In the uplink the length is defined as between 4 and 256.  In the downlink the length is defined as between 4 and 512.

Know more about Scrambling Code

UMTS Scrambling Code Planning Guide

What is channelization code?

Channelization codes are orthogonal codes used to spread the signal and hence provides channel separation, that is, channelization codes are used to separate channels from a cell.

To Know more on WCDMA

100 WCDMA Documents

LTE Presetations 

Consider downlink only, what are the major components in calculating maximum path loss, starting from NodeB?

·         NodeB CPICH transmit power.

·         Jumper and feeder connector loss.

·         Antenna gain.

·         Over-the-air loss.

·         Building / vehicle penetration loss.

·         Body loss.

Parameter Dictionary from well known Vendor
Google Mapinfo Tool

How much is your HSDPA (max) link power?

HSDPA link power is typically 4 to 5dB below the maximum NodeB maximum output power.  For example, for 43dBm maximum NodeB power the HSDPA link power is 39dBm.

HSDPA Network Planning Guide

What is Difference between ARQ and HARQ?

HSDPA Measurement Events

What is a typical CPICH power?

CPICH power typically takes about 10% of the total NodeB power.  For a 20W (43dBm) NodeB, CPICH is around 2W (33dBm).

In urban areas where in-building coverage is taken care of by in-building installations, the CPICH may sometimes go as low as 5% because:

• The coverage area is small since users are close to the site, and
• More power can be allocated to traffic channels.

Find UMTS Questions and Answers

Nemo Outdoor and Analyzer Training Slides

How much power usually a NodeB is allocated to control channels?

The power allocated to control channels may depend on equipment vendor recommendation.  Typically no more than 20% of the total NodeB power is allocated to control channels, including CPICH.  However, if HSDPA is deployed on the same carrier then the total power allocated to control channel may go up to 25 to 30% because of the additional HSDPA control channels required.

What is Power Congestion in UMTS?

How We can tune 3G Network?