4.2.8 TrCH multiplexing
25.2223GPPMultiplexing and channel coding (TDD)Release 17TS
Every 10 ms, one radio frame from each TrCH is delivered to the TrCH multiplexing. These radio frames are serially multiplexed into a coded composite transport channel (CCTrCH). If the TTI is smaller than 10ms, then no TrCH multiplexing is performed.
The bits input to the TrCH multiplexing are denoted by 
, where i is the TrCH id number and Vi is the number of bits in the radio frame of TrCH i. The number of TrCHs is denoted by I. The bits output from TrCH multiplexing are denoted by 
, where S is the number of bits, i.e. 
. The TrCH multiplexing is defined by the following relations:
k = 1, 2, …, V1
k = V1+1, V1+2, …, V1+V2
k = (V1+V2)+1, (V1+V2)+2, …, (V1+V2)+V3
k = (V1+V2+…+VI-1)+1, (V1+V2+…+VI-1)+2, …, (V1+V2+…+VI-1)+VI