Uu Interface Sublayers RLC Worksheet 03

TX Buffer RLC Control SDU Re-assembly

Seqmentation and Concatenation

Re-TXBuffer

Remove RLC Header

Reception buffer and ARQ Re-order

RoutingAdd RLC Header

PDCP PDURLCHeader

PDCP PDURLC Header

TM-SAP TM-SAP

TX BufferTransmitting TM-RLCentity

Receiving TM-RLC entity

DCCH/PCCH/CCCH TMD PDU

No segmentation or concatenation of RLC SDUsNo RLC header

Uu-LTE

TX Buffer

Seg and Conc

Add RLC Header

Recep buffer and HARQ re-

order

RemoveRLC Header

SDU Re-assemble

UM-SAP UM-SAP

Transmitting UM-RLCentity

Receiving TM-RLC entity

Uu-LTE

DTCH UMD PDU

FI E SN (5 bit)

(10 bit)

R R R EFI SN

SN

TXSeg/Conc RLC PDUs so UMD PDU fits into RLC PDUs total size as indicated by the lower layers

RXDuplication detection/re-order/loss detectionRe-assemble/discard if necessary

FI = Framing indicator Indicates where data found in segments'E = Ext bit 0 data bits follow and , 1 other header fields follow.SN = Sequence Number Incremented by 1 for each RLC PDUR = Reserved

AM-SAP

Data PacketControlPacket

DCCH/DTCH DCCH/DTCH

AMD PDU or AMD PDU Segment or Status PDU

E SNFIPRFD/C

SN

D/C = 0 control pkt and 1 data pktRF = Reseg flag 0 complete PDU, 1 PDU segP = Polling 0 no status rep req, 1 status rep req

TXSeg/Conc RLC PDUs so AMD PDU fits into RLC PDUs total size as indicated by the lower layersThe TX supports retrans of RLC data PDUs (ARQ)

RXDuplication detection/re-order/loss detectionRetrans requestsRe-assemble/discard if necessary

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