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Feature #2722

closed

document RACH tuning parameters more thoroughly, give explanations

Added by laforge about 4 years ago. Updated about 2 years ago.

Status:
Resolved
Priority:
High
Assignee:
Category:
-
Target version:
-
Start date:
12/08/2017
Due date:
% Done:

100%

Spec Reference:

Description

Like any GSM network, we do have parameters such as rach max retransmission and rach tx integer that influence the RACH load (and RACH/IMM-ASS delay).

Users on lightly loaded networks with few users need different defaults than users o highly [over]loaded cells.

See also: In general:
  • higher tx-integer will be better for high-load, but will increase the delay of a MS getting any channel
  • higher max-retransmissions means higher rach-load on the cell as the MS will make more re-tries. However, higher chance that it will get through, even in adverse radio conditions.

Let's make sure we give proper advice to our users.


Related issues

Related to OsmoBSC - Feature #2591: ramp up cell slowly based on access control class to avoid severe RACH/SDCCH overloadResolvedstsp10/23/2017

Actions
Related to OsmoBSC - Feature #1611: be more efficient in batching IMMEDIATE ASSIGN REJECT messagesRejectedstsp02/23/2016

Actions
Related to OsmoBSC - Feature #2592: Use "waiting time" of IMMEDIATE ASSIGN REJECTResolvedstsp10/23/2017

Actions
Related to OsmoBSC - Feature #2893: automatic simulator for large LU load Stalled01/27/2018

Actions
Actions #1

Updated by laforge about 4 years ago

  • Related to Feature #2591: ramp up cell slowly based on access control class to avoid severe RACH/SDCCH overload added
Actions #2

Updated by laforge about 4 years ago

  • Related to Feature #1611: be more efficient in batching IMMEDIATE ASSIGN REJECT messages added
Actions #3

Updated by laforge about 4 years ago

  • Related to Feature #2592: Use "waiting time" of IMMEDIATE ASSIGN REJECT added
Actions #4

Updated by laforge almost 4 years ago

  • Related to Feature #2893: automatic simulator for large LU load added
Actions #5

Updated by laforge almost 4 years ago

  • Assignee changed from sysmocom to daniel
Actions #6

Updated by daniel over 3 years ago

  • Priority changed from Normal to High
Actions #7

Updated by daniel about 2 years ago

  • Status changed from New to In Progress
Actions #8

Updated by daniel about 2 years ago

  • % Done changed from 0 to 60
Actions #9

Updated by daniel about 2 years ago

  • Status changed from In Progress to Resolved
  • % Done changed from 60 to 100

Merged

Actions

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