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Bug #6199

closed

Sporadic dropped bursts by DSP

Added by jolly 5 months ago. Updated 5 months ago.

Status:
Resolved
Priority:
High
Assignee:
Category:
osmo-bts-sysmo
Target version:
-
Start date:
09/29/2023
Due date:
% Done:

100%

Spec Reference:

Description

RSSI application and osmocom-bb show frames with bit errors.

The dropped bursts can be debugged at sysmo-bts:
enter in the VTY: "trx 0 dsp-trace-flag error"

The DSP trace ("cat /dev/rtfifo/dsp_trace") shows for every dropped burst:
"[ERROR] : <124665.0> PhyRf_PushTxBurst: Unexpected burst timing, drop the burst (Burst 124653.0)"

To solve it, use round-robin scheduler with prio 20 or higher:
Add "-r 20" to command line.

Actions #1

Updated by jolly 5 months ago

Test with version 1.6.0 (current libraries) also fails without setting priority to 20.

Actions #2

Updated by osmith 5 months ago

  • Status changed from In Progress to Resolved
  • % Done changed from 0 to 100
Actions #3

Updated by jolly 5 months ago

Also done for osmo-pcu.

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