A.1 Conversational Radio Access Bearer

3GPP43.051GSM/EDGE Overall descriptionRelease 16Stage 2TS

In table A.1, case A represents optimized conversational RAB further described in clause A.1.2. Case B represents the generic conversational RAB.

Table A.1: Conversational RAB

PDCP

RLC

MAC

Physical Layer

Basic Physical
SubChannel

Traffic Channel

Dedicated
Control Channel

Type

Interleav.

Mod.

Coding

Non Transparent

Header Removal

Transp.

Dedicated

DBPSCH/F

TCH/F

8 diag

GMSK

UEP

As TCH/AFS

FACCH/F (2)
SACCH/TF or
SACCH/TPF +

EPCCH/F

A

8PSK (1)

UEP

ffs

FACCH/F (2)
SACCH/TF or
SACCH/TPF +

EPCCH/F

DBPSCH/H

TCH/H

4 diag

GMSK

UEP

As TCH/AHS

FACCH/H (2)
SACCH/TH or
SACCH/TPH +

EPCCH/H

8PSK

UEP

As TCH/AHS

FACCH/H (2)
SACCH/TH or

SACCH/TPH +

EPCCH/H

Non Transparent

Header
Compression
or No Adaptation

Transparent

Unack

Dedicated

DBPSCH/F

PDTCH/F

4 rect

GMSK

EEP

SACCH/TF or

SACCH/TPF +

EPCCH/F
PACCH/F

B

8PSK

EEP

SACCH/TF or

SACCH/TPF +

EPCCH/F
PACCH/F

TCH/F (2)

ffs

GMSK

EEP

FACCH/F (2)

SACCH/TF or

SACCH/TPF +

EPCCH/F

8PSK

EEP

FACCH/F (2)

SACCH/TF or

SACCH/TPF +

EPCCH/F

DBPSCH/H

PDTCH/H

4 rect

GMSK

EEP

SACCH/TH or

SACCH/TPH +

EPCCH/H
PACCH/H

8PSK

EEP

SACCH/TH or

SACCH/TPH +

EPCCH/H
PACCH/H

TCH/H

ffs

GMSK

EEP

FACCH/H
SACCH/TH or

SACCH/TPH +

EPCCH/H

UEP Unequal Error Protection – EEP Equal Error Protection.

(1) This row is intended for the realization of wide-band speech codec and is ffs.

(2) Whether FACCH and PACCH are both needed is ffs.