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Feature #1543

open

link/rate adaption as per spec

Added by laforge about 8 years ago. Updated about 4 years ago.

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

0%

Spec Reference:

Description

Even for GPRS only, our downlink link/rate adaption currently is only based on the error rate in terms of how many lost RLC packets / bytes we see from that MS. This method works well but is not conforming to a certain standard.

As per the GPRS spec, it should be based on bit error rate, expressed as link quality measurements, as it is done in the uplink direction.

What needs to be done
  • the above metrics first need to be computed/generated as per spec and then passed into a decision making algorithm.
  • that algorithm should be modular so that we can experiment (and switch at runtime) future different algorithms to compare them against each other.
  • unit tests for metrics + inital algorithm

Also, it is a question whether we should keep all the above separate for uplink and downlink, resulting in possibly diffeent CS based on the direction.

Finally, the question is how to test this properly, in a way that can be automatized and become part of a continuous integration setup.


Related issues

Related to OsmoBTS - Bug #1616: osmo-bts-trx / osmo-bts-octphy doesn't provide C/I information to PCU Resolvedfixeria02/23/2016

Actions
Related to OsmoPCU - Feature #1536: Implement adaptive CS selectionClosedpespin02/22/2016

Actions
Actions #2

Updated by laforge over 7 years ago

  • Assignee set to neels
Actions #3

Updated by neels over 7 years ago

My awareness level of this issue so far is very low.

Actions #4

Updated by laforge over 7 years ago

  • Related to Bug #1616: osmo-bts-trx / osmo-bts-octphy doesn't provide C/I information to PCU added
Actions #5

Updated by msuraev over 7 years ago

  • Related to Feature #1536: Implement adaptive CS selection added
Actions #6

Updated by laforge over 7 years ago

  • Assignee changed from neels to msuraev
Actions #7

Updated by laforge about 6 years ago

  • Assignee deleted (msuraev)
Actions #8

Updated by laforge over 5 years ago

Actions #9

Updated by laforge almost 5 years ago

  • Assignee set to lynxis
Actions #10

Updated by laforge about 4 years ago

  • Assignee deleted (lynxis)
Actions

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