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Article | REF: TE7368 V1

Cellular networks - UMTS system

Author: Jean CELLMER

Publication date: May 10, 2002 | Lire en français

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    11. Transport and physical channels

    Transport channels are based on physical channels, organized as shown in figure 25 . In addition to the physical channels that support transport channels, there are a few special physical channels that carry information specific to the physical layer and are transmitted by each base station:

    • synchronization channel (SCH) ;

    • common pilot channel (CPICH) ;

    • acquisition indication channel (AICH) ;

    • messaging indication channel (PICH) ;

    • CPCH status indication channel (CSICH) ;

    • collision detection channel and channel allocation indicator (CD/CA-ICH).

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