RAB Example Parallel CS + PS and associated SRB This document details 2 simultaneous RABs and associated SRBs from TS32.8 The RABs are:. Conversational symmetrical Circuit Switched 64 kbps 2. Interactive or Background asymmetric Packet Switched 28 kbps DL, 64 kbps UL The SRB is symmetrical at 3.4 kbps
6..2.4..52 Conversational / unknown / UL:64 DL:64 kbps / CS RAB + Interactive or background / UL:64 DL:28 kbps / PS RAB + UL:3.4 DL:3.4 kbps SRBs for DCCH Uplink Transport channel parameters Transport channel parameters for Conversational / unknown / UL:64 kbps / CS RAB Higher layer RLC MAC Layer RAB/Signalling RB RAB Logical channel type DTCH RLC mode TM Payload sizes, bit 64 Max data rate, bps 64 TrD PDU header, bit MAC header, bit N/A TrCH type TB sizes, bit 64 S, bits x64, bits 2x64(alt. 4x64) TTI, ms 2(alt. 4) Coding type TC CRC, bit 6 Max number of bits/tti after channel coding 3948(alt. 7884) Uplink: Max number of bits/radio frame before rate 974(alt. 97) matching RM attribute 5-95 Transport channel parameters for Interactive or background / UL:64 kbps / PS RAB Higher layer RLC MAC Layer RAB/Signalling RB RAB Logical channel type DTCH RLC mode AM Payload sizes, bit 32 Max data rate, bps 64 AMD PDU header, bit 6 MAC header, bit N/A TrCH type TB sizes, bit S, bits x, bits x 2, bits 2x 3, bits 3x 4, bits 4x TTI, ms 2 Coding type TC CRC, bit 6 Max number of bits/tti after channel coding 4236 Uplink: Max number of bits/radio frame before 28 rate matching RM attribute 3-7
Transport channel parameters for UL:3.4 kbps SRBs for DCCH Higher RAB/signalling RB SRB# SRB#2 SRB#3 SRB#4 layer User of Radio Bearer RRC RRC NAS_DT High prio NAS_DT Low prio RLC Logical channel type DCCH DCCH DCCH DCCH RLC mode UM AM AM AM Payload sizes, bit 36 28 28 28 Max data rate, bps 34 32 32 32 AMD/UMD PDU header, bit 8 6 6 6 MAC MAC header, bit 4 4 4 4 4 logical channel multiplexing Layer TrCH type TB sizes, bit (alt, ) S, bits x (alt x), bits x TTI, ms 4 Coding type CC /3 CRC, bit 6 Max number of bits/tti before 56 rate matching Uplink: Max number of bits/radio 29 frame before rate matching RM attribute 55-85 CS CS size 2 CS (Conv. 64 kbps RAB, I/B 64 kbps RAB, DCCH)= (,, ), (,, ), (, 2, ), (, 3, ), (, 4, ), (,, ), (,, ), (, 2, ), (, 3, ), (, 4, ), (,, ), (,, ), (, 2, ), (, 3, ), (, 4, ), (,, ), (,, ), (, 2, ), (, 3, ), (, 4, ) Physical channel parameters DPCH Uplink Min spreading factor 8 Max number of DP data 48 bits/radio frame Puncturing Limit.88
Downlink Transport channel parameters Transport channel parameters for Conversational / unknown / DL:64 kbps / CS RAB Higher layer RLC MAC Layer RAB/Signalling RB RAB Logical channel type DTCH RLC mode TM Payload sizes, bit 64 Max data rate, bps 64 TrD PDU header, bit MAC header, bit N/A TrCH type TB sizes, bit 64 S, bits x64, bits 2x64(alt. 4x64) TTI, ms 2(alt. 4) Coding type TC CRC, bit 6 Max number of bits/tti after channel coding 3948(alt. 7884) RM attribute 5-95 Transport channel parameters for Interactive or background / DL:28 kbps / PS RAB Higher layer RLC MAC Layer RAB/Signalling RB RAB Logical channel type DTCH RLC mode AM Payload sizes, bit 32 Max data rate, bps 28 AMD PDU header, bit 6 MAC header, bit N/A TrCH type TB sizes, bit S, bits x, bits x 2, bits 2x 3, bits 4 x 4, bits 8 x TTI, ms 2 Coding type TC CRC, bit 6 Max number of bits/tti after channel coding 846 RM attribute 2-6
Transport channel parameters for DL:3.4 kbps SRBs for DCCH Higher layer RAB/signalling RB SRB# SRB#2 SRB#3 SRB#4 User of Radio Bearer RRC RRC NAS_DT High prio NAS_DT Low prio RLC Logical channel type DCCH DCCH DCCH DCCH RLC mode UM AM AM AM Payload sizes, bit 36 28 28 28 Max data rate, bps 34 32 32 32 AMD/UMD PDU header, bit 8 6 6 6 MAC MAC header, bit 4 4 4 4 4 logical channel multiplexing Layer TrCH type TB sizes, bit (alt, ) (note) S, bits x (alt x) (note), bits x TTI, ms 4 Coding type CC /3 CRC, bit 6 Max number of bits/tti before 56 rate matching RM attribute 55-85 NOTE: alternative parameters enable the measurement "transport channel BLER" in the UE. CS CS size 2 CS (Conv. 64 kbps RAB, I/B 28 kbps RAB, DCCH)= (,, ), (,, ), (, 2, ), (, 3, ), (, 4, ), (,, ), (,, ), (, 2, ), (, 3, ), (, 4, ), (,, ), (,, ), (, 2, ), (, 3, ), (, 4, ), (,, ), (,, ), (, 2, ), (, 3, ), (, 4, ) Physical channel parameters DPCH Downlink DTX position Flexible Spreading factor 8 DPCCH Number of CI bits/slot 8 Number of TPC bits/slot 8 Number of Pilot bits/slot 6 DP Number of data bits/slot 68 Number of data bits/frame 92
The Transport Format Sets (S) of each Transport Channel (The 6 boxes represent the individual transport channels and show the elements (transport formats) of the 6 Transport Format Sets (S)) DL I/B 28 kbps RAB Transport Format Set UL I/B 28 kbps RAB Transport Format Set Transport Blocks (TB) Transport Block Size = bits 2 Transport Block Set 2 Transport Block Set Size = 8 bits 3 3 4 4 DL 3.4 kbps SRB Transport Format Set UL 3.4 kbps SRB Transport Format Set DL Conv 64kbps RAB Transport Format Set UL Conv 64kbps RAB Transport Format Set 64 64 64 64
The Uplink Transport Format Combination Set (CS) (Each of the 2 elements in the set represents a possible transport format combination (C) of the 3 UL transport channels),,,,, 2,, 3,, 4,,,,,, 2,, 3,, 4, 64 64 64 64 64 64 64 64 64 64,,,,, 2,, 3,, 4,,,,,, 2,, 3,, 4, 64 64 64 64 64 64 64 64 64 64
The Downlink Transport Format Combination Set (CS) (Each of the 2 elements in the set represents a possible transport format combination (C) of the 3 DL transport channels),,,,, 2,, 3,, 4,,,,,, 2,, 3,, 4, 64 64 64 64 64 64 64 64 64 64,,,,, 2,, 3,, 4,,,,,, 2,, 3,, 4, 64 64 64 64 64 64 64 64 64 64