From 3839abebe7623576c10e9117deff096881a7f664 Mon Sep 17 00:00:00 2001
From: luis_pereira87 <lpereira@allbesmart.pt>
Date: Wed, 12 Oct 2022 16:11:50 +0100
Subject: [PATCH] Add section with optional advanced configurations

---
 doc/NR_SA_CN5G_gNB_USRP_COTS_UE_Tutorial.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/NR_SA_CN5G_gNB_USRP_COTS_UE_Tutorial.md b/doc/NR_SA_CN5G_gNB_USRP_COTS_UE_Tutorial.md
index 745659deb1..7cd277eea4 100644
--- a/doc/NR_SA_CN5G_gNB_USRP_COTS_UE_Tutorial.md
+++ b/doc/NR_SA_CN5G_gNB_USRP_COTS_UE_Tutorial.md
@@ -244,3 +244,9 @@ iperf -s -u -i 1 -B 12.1.1.2
 ```bash
 docker exec -it oai-ext-dn iperf -u -t 86400 -i 1 -fk -B 192.168.70.135 -b 100M -c 12.1.1.2
 ```
+
+# 6. Advanced configuration (optional)
+
+- If you get real-time problems on heavy UL traffic, reduce the maximum UL MCS using an additional command-line switch: `--MACRLCs.[0].ul_max_mcs 14`.
+
+- There is noise on the DC carriers on N300 and especially the X300 in UL. To avoid their use or shift them away from the center to use more UL spectrum, use the `--tune-offset <Hz>` command line switch, where `<Hz>` is ideally half the bandwidth, or possibly less.