PROTOCOL DATA UNIT SYSTEMS AND METHODS
A method of processing a protocol data unit (PDU) set for a data network includes steps of (a) receiving a first PDU packet of the PDU set, (b) receiving, subsequent to reception of the first PDU packet, a second PDU packet of the PDU set, (c) determining, after receiving the first and second PDU packets, a congestion status of the data network for the PDU set, (d) controlling, based on the determined congestion status, a handling state of the second PDU packet to match a handling state of the first PDU packet, and (e) transmitting the first PDU packet and the controlled second PDU packet to a destination receiver of the data network.
1 . A method of enabling a congestion indication utilizing a first node of a data network, comprising the steps of:
receiving, by a session management function (SMF) of the data network, a policy configured to enable an explicit congestion notification (ECN) marking for a low latency low loss scalable (L4S) throughput for a first protocol data unit (PDU) session;
enabling, based on the received policy, a first ECN marking by way of the first node; and
indicating, based on the step of enabling, the first ECN marking to the first node;
transmitting the first PDU session by way of the first node; and
monitoring one or more packets of the first PDU session based on the first ECN marking.
2 . The method of claim 1 , wherein the step of enabling is based on one or more of a PDU session type of the first PDU session, an access type of the first node, and a device type of a source, destination, and/or application corresponding to the first PDU session.
3 . The method of claim 2 , wherein the PDU session type indicates one of a single PDU session and a multiple-access PDU (MA-PDU) session.
4 . The method of claim 3 , wherein the PDU session type indicates the MA-PDU session, and wherein the first node includes a user plane function (UPF).
5 . The method of claim 2 , wherein the access type of the first node includes one of a 3GPP access means and a non-3GPP access means.
6 . The method of claim 2 , wherein the device type is at least one of a 3GPP user equipment device (UE) and a non-3GPP UE.
7 . The method of claim 6 , wherein the 3GPP UE supports non-stratum access (NAS) signaling, and wherein the non-3GPP UE does not support NAS signaling.
8 . The method of claim 7 , wherein the first node includes a node UE, and wherein the node UE is configured to initiate the first PDU session based on a determination that the device type of the source or destination indicates a non-3GPP UE.
9 . The method of claim 1 , wherein the step of enabling is based at least in part on an ECN marking capability of a user plane function (UPF).
10 . The method of claim 1 , wherein the step of indicating is based on a response from the first node indicating that the first node a user plane function (UPF).
11 . The method of claim 1 , wherein the step of indicating is based on a response from the first node including an implicit indication that the first node is a non-3GPP access node.