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Feature #1536

closed

Implement adaptive CS selection

Added by zecke about 8 years ago. Updated about 3 years ago.

Status:
Closed
Priority:
Low
Assignee:
Target version:
-
Start date:
02/22/2016
Due date:
% Done:

0%

Spec Reference:

Description

To provide GPRS with a lower quality radio link while providing a higher throughput when the conditions are good, the CS level should be controlled dynamically.

The following topics are affected:

  • Initial CS selection. Currently this is done by configuration. It could also be done by using measurement values provided by the DSP (RSSI and TA) or the MS (C_VALUE, RXQUAL, ...)
  • Monitoring ACK/NACK for a DL TBF to adjust the encoding (DL)
  • Monitoring packet errors for an UL TBF (poll timeout?)
  • Configuration of maximum CS values (UL and DL separately)
  • Handle stalls due to enqueued DL RLC/MAC blocks with a CS level that is too high to be received correctly by the MS (TBF termination?)
  • Configuration of adaptation parameters
  • VTY command to dump per-MS information (overview + detail)

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 #1543: link/rate adaption as per specNew02/23/2016

Actions
Actions #1

Updated by zecke about 8 years ago

From Jacob:

Another related topic:

  • Honour the CS flags passed in SI from the BSC to limit the selection of the CS
Actions #2

Updated by zecke about 8 years ago

  • Priority changed from Normal to Low
Actions #3

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 #4

Updated by msuraev over 7 years ago

Actions #5

Updated by laforge about 6 years ago

  • Assignee deleted (msuraev)
Actions #6

Updated by laforge about 6 years ago

  • Assignee set to 4368
Actions #7

Updated by laforge about 3 years ago

  • Status changed from New to Feedback
  • Assignee changed from 4368 to pespin

I presume this can be closed for quite some time, pespin?

Actions #8

Updated by pespin about 3 years ago

  • Status changed from Feedback to Closed

Yes, I think in general most of it is done nowadays. We can later create specific tickets if we see something we want to improve.

Actions

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