diff --git a/doc/ref_model/chapters/chapter02.rst b/doc/ref_model/chapters/chapter02.rst
index bf0eefdd..9d35d116 100644
--- a/doc/ref_model/chapters/chapter02.rst
+++ b/doc/ref_model/chapters/chapter02.rst
@@ -345,13 +345,15 @@ expectation levels:
- **Computing**
- Speed (e.g., CPU clock and physical cores number)
- - Predictability (e.g., CPU and RAM sharing level)
+ - Predictability (e.g., CPU and RAM sharing level; real-time pre-emptive scheduling and/or settings for BIOS, kernel
+ and OS services)
- Specific processing (e.g., cryptography, transcoding)
- **Networking**
- Throughput (i.e., bit rate and/or packet rate)
- - Latency
+ - Latency and Time Sensitive Networking (TSN)
+ - Platform Synchronization (e.g. GNSS, PTP, SyncE)
- Connection points / interfaces number (i.e., vNIC and VLAN)
- Specific traffic control (e.g., firewalling, NAT, cyphering)
- Specific external network connectivity (e.g., MPLS, VXLAN)
@@ -517,6 +519,12 @@ The following **profile extensions** are proposed:
| | | | | geographical | |
| | | | | distribution. | |
+-------------------+-------------------------+---------------+---------------+------------------------+---------------+
+| Real-Time and | rt-tsn | ❌ | ✅ | Labels a host/node | For example, |
+| Time Sensitive | | | | configured for Real- | nodes to run |
+| Networking - RAN | | | | -Time predictability | vDU |
+| cell sites | | | | and Time Sensitive | |
+| | | | | Networking | |
++-------------------+-------------------------+---------------+---------------+------------------------+---------------+
| Fixed function | compute-ffa | ❌ | ✅ | Labels a host/node | |
| accelerator | | | | that includes a | |
| | | | | consumable fixed | |
diff --git a/doc/ref_model/chapters/chapter03.rst b/doc/ref_model/chapters/chapter03.rst
index 3b72aeaa..9d01d4f8 100644
--- a/doc/ref_model/chapters/chapter03.rst
+++ b/doc/ref_model/chapters/chapter03.rst
@@ -955,11 +955,11 @@ Managed Objects :cite:p:`rfc5907`,
Server Option for DHCPv6 :cite:p:`rfc5908`)
as the default time synchronization for the cluster. That level of synchronization is not sufficient for some
network functions. Just like real-time operating systems instead of base OS, so is precision timing for clock
-synchronization. Precision Time Protocol version 2 `PTP `__ cite:p:`ieee1588dash2019`
+synchronization. Precision Time Protocol version 2 PTP :cite:p:`precision-time-protocol-version-2` __ :cite:p:`ieee1588dash2019`
is commonly used for Time-Sensitive Networking. This allow synchronization in microsecond range rather than
millisecond range that NTP provides.
-Some Network functions, like vDU, of vRAN, also require `SyncE `__ :cite:p:`itutg8262`. Control,
+Some Network functions, like vDU, of vRAN, also require SyncE :cite:p:`syncE` :cite:p:`itutg8262`. Control,
User and Synchronization (CUS) Plane specification defines different topology options that provides Lower Layer Split
Control plane 1-4 (LLS-C1 - LLS-C4) with different synchronization requirements
(`ITU-T G.8275.2 `__ :cite:p:`itutg82752`).
diff --git a/doc/ref_model/chapters/chapter04.rst b/doc/ref_model/chapters/chapter04.rst
index 50dcba69..0b97a099 100644
--- a/doc/ref_model/chapters/chapter04.rst
+++ b/doc/ref_model/chapters/chapter04.rst
@@ -134,6 +134,12 @@ Exposed performance optimisation capabilities
+---------+---------------------+------+-------------------------------------------------------------------------------+
|e.cap.025| AF_XDP |Yes/No| Indicates whether or not the Cloud Infrastructure supports AF_XDP. |
+---------+---------------------+------+-------------------------------------------------------------------------------+
+|e.cap.026| Real-Time |Yes/No| Indicates whether the Cloud Infrastructure supports real-time versions and/or |
+| | | | configuration for BIOS, kernel and OS services. |
++---------+---------------------+------+-------------------------------------------------------------------------------+
+|e.cap.027| Time Sensitive |Yes/No| Indicates whether the Cloud Infrastructure node supports timing accuracy with |
+| | Networking | | PTP and synchronization with SyncE. |
++---------+---------------------+------+-------------------------------------------------------------------------------+
**Table 4-2:** Exposed performance optimisation capabilities of the Cloud Infrastructure
diff --git a/doc/ref_model/chapters/chapter05.rst b/doc/ref_model/chapters/chapter05.rst
index 0bf9d4b8..28af6536 100644
--- a/doc/ref_model/chapters/chapter05.rst
+++ b/doc/ref_model/chapters/chapter05.rst
@@ -713,13 +713,25 @@ infra.hw.pci.cfg.003 PCIe lanes 8
Network acceleration configurations
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-==================== =================== =============================== ======== ================ ======================
-Reference Feature Description Basic High performance Capabilities Reference
-==================== =================== =============================== ======== ================ ======================
-infra.hw.nac.cfg.001 Crypto acceleration IPSec, Crypto. N Optional ``e.cap.009``
-infra.hw.nac.cfg.002 SmartNIC Offloads network functionality. N Optional ``e.cap.015``
-infra.hw.nac.cfg.003 Compression Optional Optional
-infra.hw.nac.cfg.004 SR-IOV over PCI-PT SR-IOV N Optional ``e.cap.013``
-==================== =================== =============================== ======== ================ ======================
++----------------------+----------------+----------------------+----------+-------------+---------------+
+| Reference | Feature | Description | Basic | High | Capabilities |
+| | | | | performance | Reference |
++======================+================+======================+==========+=============+===============+
+| infra.hw.nac.cfg.001 | Crypto | IPSec, Crypto. | N | Optional | ``e.cap.009`` |
+| | acceleration | | | | |
++----------------------+----------------+----------------------+----------+-------------+---------------+
+| infra.hw.nac.cfg.002 | SmartNIC | Offloads network | N | Optional | ``e.cap.015`` |
+| | | functionality. | | | |
++----------------------+----------------+----------------------+----------+-------------+---------------+
+| infra.hw.nac.cfg.003 | Compression | | Optional | Optional | |
++----------------------+----------------+----------------------+----------+-------------+---------------+
+| infra.hw.nac.cfg.004 | SR-IOV over | SR-IOV | N | Optional | ``e.cap.013`` |
+| | PCI-PT | | | | |
++----------------------+----------------+----------------------+----------+-------------+---------------+
+| infra.hw.nac.cfg.005 | Time Sensitive | Timing accuracy with | N | Optional | ``e.cap.027`` |
+| | Networking | PTP Hardware Clock | | | |
+| | | and synchronization | | | |
+| | | with SyncE. | | | |
++----------------------+----------------+----------------------+----------+-------------+---------------+
**Table 5-19:** Network acceleration configuration specification