Aastra X Series, Руководство по установке и внедрению

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Page 1-21 10/2008 AMT/PTD/TR/0020/2/7/EN
• Case of theoretical limits
• Case of two base stations without handover
• Case of two base stations with handover
RSSI (Hex)
60
Bx: base station studied
Dn: direction chosen
60
50
40
30
30
40
50
3D
CRC Err
3D
Err CRC
Graph of Bx for direction Dn
2
RSSI (Hex)
bottom
distance
Graph of Bx for direction Dn
1
BS
top
right
back
front
storey left
60
0
ou
3D
CRC Err
The vertical axis represents the RSSI level of the base station
studied, as seen by the mobile (in mode DEBUG)
The horizontal axis represents the distance between the mobile
and the base station studied
The lower level 3D (hex) that determines the limits of the area if
there is no CRC error
The point of the curve from where the CRC is failed
RSSI (Hex)
60
distance
Bx: base station
studied
Dn: direction chosen
60
50
40
30
30
40
50
3D
CRC Err
3D
CRC Err
Graph of B1 for direction Dn (right) Graph of B2 for direction Dn (left)
RSSI (Hex)
SSI (Hex)
60
30
40
50
CRC Err
3D
60
50
40
30
3D
CRC Err
RSSI (
Intersection