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UTRAN side MAC architecture. 3GPP TSs and TRs are the property of ARIB, CWTS, ETSI, T1, TTA and TTC who jointly own copyright in them. They are subject to further modification and are therefore provided to you ‘as is’ for information purposes only. Further use is strictly prohibited. | UMTS Air Interface 51 Figure UTRAN side MAC architecture. 3GPP TSs and TRs are the property of ARIB CWTS ETSI T1 TTA and TTC who jointly own copyright in them. They are subject to further modification and are therefore provided to you as is for information purposes only. Further use is strictly prohibited. respective mapping between logical and transport channels. The TCTF field indicates the common logical channel type or if a dedicated logical channel is used. UE Id Mux for dedicated type logical channels the UE Id field in the MAC header is used to distinguish between UEs. TFC selection in the downlink transport format combination selection is done for FACH and PCH and DSCHs. Demultiplex for TDD operation the demultiplex function is used to separate USCH data from different UEs . to be transferred to different MAC-d entities. DL code allocation this function is used to indicate the code used on the DSCH. Flow control is provided to MAC-d. The RLC provides RLC-PDUs to the MAC which fit into the available transport blocks on the transport channels. There is one MAC-c sh entity in the UTRAN for each cell. The following functionality is covered by the MAC-d entity at the UTRAN side Channel switching dynamic transport channel type switching is performed by this entity based on decision taken by RRC. C T MUX box the function includes the C T field when multiplexing of several dedicated logical channels onto one transport channel is used. Priority setting this function is responsible for priority setting on data received from DCCH DTCH. Ciphering ciphering for transparent mode data to be ciphered is performed in MAC-d. Deciphering deciphering for ciphered transparent mode data is performed in MAC-d. DL scheduling priority handling in the downlink scheduling and priority handling of 52 Broadband Wireless Mobile 3G and Beyond transport channels is performed within the allowed transport format combinations of the TFCS assigned by the RRC. Flow control a flow .

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