Methods and Apparatus for Detecting and Indicating Congestion at a UE Which Uses a Non-3GPP Access Point

Abstract: methods and apparatus for providing l4s support with regard to non-3gpp untrusted/trusted accesses in which a user equipment (ue) is enabled to monitor for uplink and/or downlink congestion with regard to l4s uplink data traffic flows at the ue, detect congestion, and perform explicit congestion notification (ecn) markings or communicate congestion information to perform ecn marking to another device are described. in some embodiments, the ue device indicates detected congestion, at the ue, in an uplink (ul) traffic flow via performing ecn marking of an innermost ip header ecn field. in some other embodiments, the ue device communicates detected congestion information, via a gre message to a core network interface device, which communicates, via gtp-u, the detected congestion information to a upf, which then uses the received ue detected congestion information to performs ecn marking in the innermost ip header of an uplink data packet.

Inventor(s): Paul L. Russell, JR., Yildirim Sahin, Imtiyaz Shaikh, Maulik Vaidya

CPC Classification: H04W28/0284 (Traffic management, e.g. flow control or congestion control)

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