From 780a2467aafcbe8cd1aa8c9d32e90a4d900bd875 Mon Sep 17 00:00:00 2001
From: Robert Schmidt <robert.schmidt@openairinterface.org>
Date: Mon, 26 Jan 2026 14:35:15 +0100
Subject: [PATCH] Add documentation for multi-PDU session configuration

---
 doc/NR_SA_Tutorial_OAI_nrUE.md | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/doc/NR_SA_Tutorial_OAI_nrUE.md b/doc/NR_SA_Tutorial_OAI_nrUE.md
index 01a9cc172f..7af5dd16b5 100644
--- a/doc/NR_SA_Tutorial_OAI_nrUE.md
+++ b/doc/NR_SA_Tutorial_OAI_nrUE.md
@@ -188,8 +188,23 @@ uicc0 = {
 | **IMSI** | Unique identifier for the UE within the mobile network. Used by the network to identify the UE during authentication. It ensures that the UE is correctly identified by the network. | 001010000000001 |
 | **key** | Cryptographic key shared between the UE and the network, used for encryption during the authentication process. | `fec86ba6eb707ed08905757b1bb44b8f` |
 | **OPC** | Operator key for the Milenage Authentication and Key Agreement algorithm used for encryption during the authentication process. | Ensures secure communication between the UE and the network by matching the encryption keys. | `C42449363BBAD02B66D16BC975D77CC1` |
-| **DNN** | Specifies the name of the data network the UE wishes to connect to, similar to an APN in 4G networks. | `oai` |
-| **NSSAI** | Allows the UE to select the appropriate network slice, which provides different QoS. | `1` |
+| **DNN** | _Deprecated_: Specifies the name of the data network the UE wishes to connect to, similar to an APN in 4G networks. | `oai` |
+| **NSSAI** | _Deprecated_: Allows the UE to select the appropriate network slice, which provides different QoS. | `1` |
+| **pdu_sessions** | list of PDU sessions to request | empty array (no PDU session) |
+
+Note that DNN and NSSAI parameters are deprecated, and `pdu_sessions` should be
+used. If the `pdu_sessions` array is present, DNN and NSSAI are ignored.
+
+Each element within the `pdu_sessions` array takes the following parameters.
+Multiple PDU sessions can be requested.
+
+| **Parameter** | **Description** | **Default Value** |
+|---------------|-----------------|-------------------|
+| `id`          | ID of the PDU session to request | index of the current element (1..16) |
+| `type`        | Type of the PDU session to request (allowed: `IPv4`, `IPv6`, `IPv4v6`, `Ethernet` | `IPv4` |
+| `dnn`         | Specifies the name of the data network the UE wishes to connect to | `oai` |
+| `nssai_sst`   | Slice Service Type to request (1=eMBB, 2=URLLC, 3=mMTC) | `1` |
+| `nssai_sd`   | Slice Differentiator to request | `0xffffff` (meaning "no SD") |
 
 The UE configuration must match the one of the network's AMF. The nrUE can connect by default to OAI CN5G with no need to provide the configuration file.