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Bug #4338

closed

Add EGPRS tests toTTCN3 PCU_Tests_RAW

Added by pespin about 3 years ago. Updated about 2 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Target version:
-
Start date:
12/23/2019
Due date:
% Done:

100%

Spec Reference:

Description

I create this ticket to document process of adding some sample test validating EGPRS against osmo-pcu.
Probably the easiest would be to start and create a TC_mo_mt_ping_egprs().

When the mobile station has received the PACKET UPLINK ASSIGNMENT message it shall respond with a PACKET RESOURCE REQUEST message in the first allocated radio block.
A mobile station supporting EGPRS shall indicate the EGPRS capability in the MS Radio Access Capability 2 IE of the PACKET RESOURCE REQUEST message. 

https://issuu.com/leliwa/docs/signalling_in_gprs_egprs_chapter_03/30 page 44-45/68.

That's two-phase access to get EGPRS TBF:
  • MS sends RACH on CCCH asking for UL TBF
  • Network sends IMM ASS on AGCH/PCH providing PDCH + TLLI + TFI
  • MS sends PACKET RESOURCE REQUEST on PDCH assigned with "MS Radio Access Capability 2" IE stating it supports EGPRS
  • The network should send an PACKET UPLINK ASSIGNMENT with updated CS
  • MS answers with PACKET CONTROL ACK
  • MS can now send whatever data.

TS 44.060 sec Table 11.2.16.1: PACKET RESOURCE REQUEST information elements


Files

osmo-pcu.cfg osmo-pcu.cfg 782 Bytes fixeria, 03/04/2020 07:05 PM
offending_UL_RR.pcap offending_UL_RR.pcap 121 Bytes keith, 03/05/2020 08:29 PM

Related issues

Related to OsmoPCU - Feature #4286: Support configuration using 8PSK on dowlink while staying GMSK-only on uplinkResolvedlaforge11/28/2019

Actions
Related to OsmoPCU - Feature #1559: EGPRS/GPRS multiplexing on single PDCHClosed02/23/2016

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Related to OsmoPCU - Bug #1548: 11bit RACH supportResolvedfixeria02/23/2016

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Related to OsmoPCU - Feature #1529: Support MCS 5-9 in uplinkResolvedsysmocom02/22/2016

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Related to Core testing infrastructure - Feature #4510: Support EGPRS RLC/MAC blocks in ttcn3Resolvedpespin04/23/2020

Actions
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