3848093882

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■■ EM^POL

Q]j GPRS Link adaptation parameters

Change to a higher coding scheme

From	To	Required BLER
CS-1	CS-2	< 4%
CS-2	CS-3	< 6%
CS-3	CS-4	< 2%

A change to a lower coding scheme is performed if the BLER > 10%

Up - and down switching points between coding schemes for ETT Streaming TBFs

From	To	Required BLER
CS-1	CS-2	< 0.1%
CS-2	CS-1	> 1%

SERUflPOL

EGPRS Link quality control

Estimate the quality Choose coding scheme Re-segmentation is possible

-    Use very little coding at first

-    Send morę coding if necessary

-    Receiver uses soft combining

Possible to change modę during a TBF!