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Feature #1608

hand-over betwen TCH/H and TCH/F during call based on load / quality

Added by laforge about 2 years ago. Updated 2 months ago.

Status:
New
Priority:
Urgent
Assignee:
Category:
Handover
Target version:
-
Start date:
02/23/2016
Due date:
% Done:

50%

Spec Reference:

Description

If a cell gets loaded more, it may make sense to migrate existing calls to half-rate channels by intra-BTS hand-over.


Related issues

Related to OsmoMSC - Feature #1778: avoid mismatching TCH/F vs TCH/H pchan types Stalled 07/21/2016

History

#1 Updated by laforge 7 months ago

#2 Updated by laforge 6 months ago

  • Assignee set to neels

#3 Updated by laforge 6 months ago

  • Priority changed from Normal to High

#4 Updated by laforge 6 months ago

  • Priority changed from High to Urgent

#5 Updated by neels 5 months ago

I'm not starting on this yet, please let me know in case I should start on this before completing #2618 / #2638

#6 Updated by neels 5 months ago

  • Related to Feature #1778: avoid mismatching TCH/F vs TCH/H pchan types added

#7 Updated by laforge 4 months ago

  • Project changed from OpenBSC to OsmoBSC
  • Category deleted (libbsc)

#8 Updated by laforge 4 months ago

  • Category set to Handover

#9 Updated by neels 2 months ago

  • % Done changed from 0 to 50

handover_decision_2.c which was recently merged does in fact include re-assignment and handover while changing the TCH type. It also employs an AFS bias, i.e. to handover half rate to full rate to improve the quality. Will keep this issue open as a reminder to somehow test how well this works in practice.

to enable, configure osmo-bsc with

network
 handover 1
 handover algorithm 2

and see various handover2 * config options

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