es the bits among the different PhCHs. The bits input to the physical channel segmentation are X1,X2,N3,...,Ny , where Y is the number of bits input to the physical channel segmentation block. P denotes the number of PhCHs. The bits after the physical channel segmentation get denoted where p is PhCH number and U is the number of bits in one radio frame for each PhCH, i.e. U= (Y - NTGL)/P for compressed mode by puncturing, and U = Y/P otherwise. For all modes, we map some bits of the input flow to each code until the number of bits on the code reach V. For modes other than compressed mode by puncturing, we take all bits of the input flow for mapping to the codes. For compressed mode by puncturing, only the bits of the input flow not corresponding to bits p are taken for mapping to the codes, each bit p is removed to ensure creation of the gap required by the compressed mode, as described next. Bits on the 1st PhCH after physical channel segmentation: Bits on 2nd PhCH after physical channel segmentation: Bits on Pth PhCH after physical channel where fis such that: in modes other than compressed mode by puncturing, Xi = k, all k; in the compressed mode by puncturing, bit 1,1 corresponds to the bit Xi,k with smallest index k when the bits p are not counted, bit U1,2, it corresponds to the bit Xi,k with second smallest index k when the bits p are not counted, and SO on for bits We denote the bits input to the physical segmentation by S1,S23S33....SS Hence, = Sk and Y = S. We denote the bits input to the physical segmentation by W1, W(PU) Hence,xk=wkandY=PU[10]. 4.6.11 Second Interleaving The 2nd interleaving consists on a block interleaver with inter-column permutations. We denote the input bits to the 2nd interleaver by where p is PhCH number and U is the number of bits in one radio frame for one PhCH. The matrix con- figuration can be as follows: The UMTS Network and Radio Access Technology Set the number of columns C2 = 30. Number columns 0,1,2,...,C2- 1 from left to right. Determine the number of rows R2 by findin