Project

General

Profile

Feature #3329

osmo-bts: Implement IMMEDIATE ASSIGNMENT EXTENDED

Added by pespin 6 months ago.

Status:
New
Priority:
Normal
Assignee:
sysmocom
Category:
-
Target version:
-
Start date:
06/08/2018
Due date:
% Done:

0%

Spec Reference:

Description

See 04.08 "9.1.19 Immediate assignment extended". It allows to send two Immediate Assignment to different MS in the same message.

Furthermore, according to 08.58 "5.7 IMMEDIATE ASSIGNMENT" section:

The IMMEDIATE ASSIGNMENT EXTENDED message is either sent by the BSC in the IMMEDIATE ASSIGN
COMMAND, or built by the BTS from up to two IMMEDIATE ASSIGN COMMAND messages.

So we don't need to support IMMEDIATE ASSIGNMENT EXTENDED in osmo-bsc, we can already craft them in osmo-bts (bts.c) in a way similar to what we already do with IMMEDIATE ASSIGNMENT REJECT commands (we couple up to 4 messages in one in there).

We recently saw some production scenarios which high load in which the AGCH IMM Assign queue was saturated (1000 messages in the queue), so this should help maintain the queue len in lower numbers.


Related issues

Related to OsmoBSC - Feature #3330: osmo-bsc: Implement IMMEDIATE ASSIGNMENT EXTENDEDNew2018-06-08

History

#1 Updated by pespin 6 months ago

  • Related to Feature #3330: osmo-bsc: Implement IMMEDIATE ASSIGNMENT EXTENDED added

Also available in: Atom PDF

Add picture from clipboard (Maximum size: 48.8 MB)