Group 896GPRS Radio Resource

Management

Radio Channel Model

•Path Loss

•Slow Fading

•Fast Fading

Group 896GPRS Radio Resource

Management

C/I Generation1. Mean C/I --- Path Loss and Reuse Pattern

Path Loss PDF(r)

pdf(r)=k*r, 15m<r<500m

Group 896GPRS Radio Resource

Management

0: Investigated Cell

1~6: Co-channel Cell

D: Reuse Distance

R: Cell Radius

r: MS-BTS Distance12

3

4 5

60

D

R

r

Reuse Pattern C/I Calculation

Group 896GPRS Radio Resource

Management

PDF Mean C/I

Group 896GPRS Radio Resource

Management

2. C/I per MS --- Shadowing Effect

Lognormal Distribution

C/I for Each Mobile

Group 896GPRS Radio Resource

Management

Time Correlation Function

Group 896GPRS Radio Resource

Management

Frequency Correlation Function

Group 896GPRS Radio Resource

Management

Coding Scheme Selection

CIR 0~5 CS1CIR 6~9 CS2CIR 10~16 CS3CIR 16~30+ CS4

Group 896GPRS Radio Resource

Management

BLER Generation

Random Seed< BLER Block Correct

C/I

CS_x

RandomSeed

Random Seed> BLER Block Erroneous

BLER Generation

C/I

BLER

Mapping Function

Group 896GPRS Radio Resource

Management

Path Loss

Shadowing Effect

MS ID

pdf(r)

Mean CIR

CIR per MS

CS_x Selection

BLER Mapping

RandomSeed

Block CorrectOr Erroneous

Distance Generation