6 Specific requirements

3GPP44.005General AspectsGSM/EDGE Data Link (DL) LayerRelease 16TS

6.1 Mode of operation and allowed SAPIs

The various types of channels shall support SAPIs and modes of operation as follows.

Type of channel

SAPI = 0

SAPI = 3

BCCH

Unacknowledged

Not supported

CCCH

Unacknowledged

Not supported

SDCCH

Unacknowledged and acknowledged

Acknowledged

SACCH associated with SDCCH

Unacknowledged

Not Supported

SACCH associated with TCH

Unacknowledged

Unacknowledged and Acknowledged

FACCH

Unacknowledged and acknowledged

Not supported

6.2 Acknowledged mode of operation

6.2.1 Window size

The window size, k (see 3GPP TS 44.006), shall be:

– for SAPI = 0, k = 1;

– for SAPI = 3, k = 1.

Other SAPIs, for further study.

6.2.2 Processing capacity

The processing capacity of the MS and the network shall be big enough to avoid that the data link layer entities enter the receiver busy state for SAPI = 0.

Annex A (informative):
Change History

Date / Meeting

Doc

CR

Rev

Subject/Comment

New

January 2015

Version 13 based on version 12.0.0

13.0.0

Change history

Date

TSG #

TSG Doc.

CR

Rev

Cat

Subject/Comment

New

2017-03

RP-75

Release 14 version (frozen at TSG-75)

14.0.0

2018-06

RP-80

Release 15 version (frozen at TSG-80)

15.0.0

2020-07

RP-88e

Upgrade to Rel-16 version without technical change

16.0.0