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Feature #3054

open

Extended (11-bit) RACH support in OsmoTRX

Added by laforge almost 4 years ago. Updated almost 3 years ago.

Status:
Stalled
Priority:
Normal
Assignee:
Category:
-
Target version:
-
Start date:
03/10/2018
Due date:
% Done:

90%

Spec Reference:

Description

OsmoTRX is currently only correlating with one of the three RACH sync sequences indicated in TS 05.02 5.2.7. We need to define TS1+TS2 as well as correlated against thosee during RACH detection

 const BitVector GSM::gRACHSynchSequence("01001011011111111001100110101010001111000");
+const BitVector GSM::gRACHSynchSequenceTS1("01010100111110001000011000101111001001101");       /* EGPRS with 8PSK in uplink */
+const BitVector GSM::gRACHSynchSequenceTS2("11101111001001110101011000001101101110111");       /* EGPRS without 8PSK in uplink */

Checklist

  • sigProcLib: introduce both TS1 and TS2 RACH synch. sequences
  • sigProcLib: add a CorrType for extended (11-bit) RACH
  • Distinguish handover RACH
  • Extend TRXC interface

Related issues

Related to OsmoBTS - Bug #1854: 11-bit RACH support breaks default 8-bit RACH: collisions are possibleResolvedfixeria11/18/2016

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

Actions
Related to OsmoPCU - Bug #1834: Extended (11-bit) RACH is not properly handledClosedmsuraev10/25/2016

Actions
Related to Cellular Network Infrastructure - Feature #4006: TRX protocol: wind of changeStalledfixeria05/17/2019

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