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gNB: increase some configuration defaults

Robert Schmidt requested to merge gnb-improve-defaults into develop

A couple of defaults (LDPC decoder iterations, UL max MCS) are low, and a "default" OAI will not have good UL throughput. Let's increase the defaults, as most machines should handle them.

  • set UL max MCS from 9 to 28 in config, and remove this config parameter from many config files
  • set LDPC decoder iterations from 5 to 12 by default: better UL behavior, machines should be performant enough
  • remove many ULSCH max frame inactivity 0, 1, config options to move towards scheduling UEs less often
Edited by Robert Schmidt

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