It is presented a method for determining packet loss in a fronthaul link of a radio access network. The method being performed in a packet loss determiner and comprising the steps of: obtaining a set of user equipments, UEs, that are all scheduled to communicate over a radio interface in a scheduling interval; creating a subset of UEs, comprising a number of UEs, from the set of UEs, that are the UEs in the set being most vulnerable to fronthaul packet loss; determining, for each UE in the subset of UEs, whether the communication in the scheduling interval was unsuccessful; and determining a packet loss in the fronthaul link depending on to what extent each one of the UEs in the subset of UEs is determined to have had unsuccessful use of the radio interface.

A controller of a network, including routers to forward flows of packets originated at senders to receivers along distinct network paths each including multiple links, such that the flows merge at a common link that imposes a traffic bottleneck on the flows, receives from one or more of the routers router reports that each indicate an aggregate packet loss that represents an aggregate of packet losses experienced by each of the flows at the common link. The controller sends to the senders aggregate loss reports each including the aggregate packet loss so that the senders have common packet loss information for the common link on which to base decisions as to whether to switch from delay-based to loss-based congestion control modes when implementing dual-mode congestion control of the flows. In lieu of the controller, another example employs in-band router messages populated with packet losses by the routers the messages traverse.

A controller of a network, including routers to forward flows of packets originated at senders to receivers along distinct network paths each including multiple links, such that the flows merge at a common link that imposes a traffic bottleneck on the flows, receives from one or more of the routers router reports that each indicate an aggregate packet loss that represents an aggregate of packet losses experienced by each of the flows at the common link. The controller sends to the senders aggregate loss reports each including the aggregate packet loss so that the senders have common packet loss information for the common link on which to base decisions as to whether to switch from delay-based to loss-based congestion control modes when implementing dual-mode congestion control of the flows. In lieu of the controller, another example employs in-band router messages populated with packet losses by the routers the messages traverse.

The disclosure generally relates to various methods to increase network coverage for a Voice-over-Internet Protocol (VoIP) session between a first user equipment (UE) and a second UE. In an aspect, a first and second UEs negotiate a codec configuration to use in the VoIP session, transmits, to the second UE, a maximum end-to-end packet loss rate (PLR) that the first UE can tolerate for received media given the negotiated codec configuration, receives, from the second UE, a maximum end-to-end PLR that the second UE can tolerate for received media given the negotiated codec configuration, and determines a distribution of the maximum end-to-end PLRs among respective uplinks and downlinks at the first UE and the second UE.

A computer readable network analysis program of performing local modeling analysis of determining an estimated value of a current network quality corresponding to explanatory variable vector in current aggregated data based on a local model including local training data; determining an abnormality in the network based on whether or not a measured value of the current network quality is lower than a threshold; determining whether or not a distribution of the connections having the measured value of the network quality exceeding the threshold is present in a large size; extracting an individual-analysis-target connection group including more than predetermined proportions of connections in the distribution of the connections having the large size; and performing the local modeling analysis to the individual-analysis-target connection group and the remaining connection groups to determine the abnormality in the network.

Techniques are described for generating and using an extended Bi-directional Forwarding Detection (BFD) control packet in a network. The extended BFD control packet includes a control message that includes a BFD session information, an identifier associated with the device sending the BFD control packet, and a payload part. The extended BFD control packet may be used to perform packet loss and/or packet delay related measurements.

Techniques are described for generating and using an extended Bi-directional Forwarding Detection (BFD) control packet in a network. The extended BFD control packet includes a control message that includes a BFD session information, an identifier associated with the device sending the BFD control packet, and a payload part. The extended BFD control packet may be used to perform packet loss and/or packet delay related measurements.

Embodiments herein disclose path selection for data traffic within a software-defined wide area network using traffic metrics. Some embodiments relate to a method that includes polling peers of the SD-WAN for traffic metrics, receiving traffic metrics from at least a portion of the peers, combining the received traffic metrics, calculating performance of a plurality of possible paths from a source node to a destination node, the nodes being within the SD-WAN topology, and selecting a path from the source node to the destination node based on the calculated performance.

Systems including at least one processor and a memory storing instructions that, when executed by the at least one processor, result in the system collecting real-time telemetry measurements for packets received at each hop of an overlay network, and the system injecting the measurements into a variable-length trailers of the packets.

Systems including at least one processor and a memory storing instructions that, when executed by the at least one processor, result in the system collecting real-time telemetry measurements for packets received at each hop of an overlay network, and the system injecting the measurements into a variable-length trailers of the packets.