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cell individual offset

This topic contains 6 replies, has 0 voices, and was last updated by  Murali Anand 4 months, 2 weeks ago.

Viewing 7 posts - 1 through 7 (of 7 total)
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  • #69004 Reply


    hi all

    please any one can advice me about the CIO parameter setting , why the default value is 0 , and when I need to change it .

    I know that it affect the drop rate , but I need to know under which conditions it will ?


    #69005 Reply


    Im not also familiar with this parameter, but as someone hinted to me, CIO is a 3G handover parameter. The higher the CIO,the earlier it will handover to neighbor cell, therefore the lesser the chance of call drop because of handover failure. Im not even 1% sure if my argument is correct. Comments pls.

    #69006 Reply



    Definition (copied from doc)
    The offset is added to the measured quantity before the UE evaluates whether an event has occurred. Improper use of non-default values may result in instability and unequal cell borders.

    By applying a positive offset, the UE sends a MEASUREMENT REPORT message back to the SRNC as if the measured value is offset higher than reality. By applying a negative offset, the UE considers the measured value to be offset lower than reality at event evaluation.

    -10 dB (late detection) –> 10 dB (early detection)

    0 dB

    0.5 dB


    #69007 Reply

    Sachin Dubey

    Hi, I want to understand, what are the conditions other than Cell Unavailability, for a Cell, that triggers the counter to peg under Category of Drop due to Unmonitored Neighbors.In simple understanding, can anyone share the reasons of drop due to unmonitored neighbors.



    #69008 Reply


    Hi, you can change de CIO (Cell Individual Offset) when you want perform HO easier, while greater CIO value is easier the HandOver to target Cell.

    #69009 Reply


    why I need to add an offset value ?
    what is the important of this value ?

    #69010 Reply

    Murali Anand

    Why CIO is not required for inter rat handover?

Viewing 7 posts - 1 through 7 (of 7 total)
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