Why are there many different logical, transport and physical channels in umts? RRC connection vs RB
Jun 192009

Due to soft handover, the classification of SRNC and DRNC occurs:

1. SRNC: Serving Radio Network Controller

2. DRNC: Drift Radio Network Controller

SRNC is the RNC which combines signals from multiple node Bs and sends them to CN (SGSN for PS, MSC for CS).

sho

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