When packet loss is detected during a communication session, a current interactivity mode is checked to determine whether to increase the amount of received audio data stored in a buffer of the receiving device. If the current interactivity mode indicates a low level of interactivity between participants in the communication session, then the total amount of received audio data stored in the buffer is increased, in order to increase the delay between receipt of audio data by the electronic device, and outputting of the audio data by the electronic device. The increased output delay is then used to recover lost packets, so that audio quality is increased while the level of interactivity between participants is low. When the current interactivity mode subsequently indicates higher participant interactivity, the amount of received audio data stored in the buffer may be reduced.

Systems and methods for reducing bandwidth loss in IPv6 packet switching networks. A network appliance is configured to sample IPv6 packets and mirror sampled packets to a working memory or memory structure, such as a queue. A transport layer payload is extracted from each sampled packet and a transport layer checksum validation operation is performed. Upon detecting an error, the network appliance updates a dropped packet rate or other metric.

In one embodiment, a device in a mesh network joins a source-destination oriented partial directed acyclic graph (SDO-PDAG) between a source node and a destination node in the network. The device receives operations, administration and maintenance (OAM) packets flooded along reverse paths of the SDO-PDAG. The device determines, based on the received OAM packets, packet drop rate (PDR) capacities of different paths between the device and the destination node. The device replicates a data packet sent from the source node to the destination node along two or more of the paths between the device and the destination node, based on the determined PDR capacities of those paths.

Systems and methods for detecting packet loss in a communication network are provided. A first network element can determine that a first group of packets meets an observation threshold. The observation threshold can comprise a predetermined number of packets in a sequence. A first timer can be initiated when the first group of packets meets the observation threshold. A first packet can be detected at the first network element after the first timer is initiated. The first timer can be re-initiated when the first packet is detected at the first network element before the first timer expires and the first packet comprises a packet in the sequence greater than a last detected packet. A first packet loss can be determined when the first packet is not a next packet in the sequence.

Technology disclosed herein includes a method to trigger protection switching on a wireless link of a network device comprised in a protection switching capable network. The method comprises monitoring one or more performance metrics on said link and sending a signal failed message when at least one metric of said one or more performance metrics fails to satisfy performance criteria related to the at least one metric of said one or more performance metrics

The invention relates to network nodes for handling non-fulfilment of QoS requirements in wireless communication systems. A first network node obtains QoS requirements associated with a PDU session of a client device application. When the QoS requirements will not be met in a core network, the first network node transmits a first QoS notification to a second network node, wherein the first QoS notification indicates that the one or more QoS requirements will not be met in the core network. When the QoS requirements will not be met in a radio access network, the first network node transmits a second QoS notification to a master node, wherein the second QoS notification indicates that the one or more QoS requirements will not be met in the radio access network. Furthermore, the invention also relates to corresponding methods and computer program.

A method performing a measurement on a data flow at a node of a communication network, the data flow including data units transmitted during first and second block periods marked by respective first and second marking values, the first and second block periods alternating in time. The method includes, at the node, during a current block period: a) determining a first parameter relating to the data units received at the node during a preceding block period; b) receiving from a further node of the transmission path a first data structure including a second parameter relating to data units transmitted to the node during the preceding block period; c) processing the first parameter and the second parameter for providing a result of the measurement on the data flow; and d) transmitting to a still further node of the transmission path a second data structure including the first parameter.

Apparatus and method for monitoring IP multicast delivery. One embodiment comprises an Optical Line Termination (OLT) device that includes a Network Termination (NT) device that connects to a core network, and a plurality of Line Termination (LT) devices that connect to an optical distribution network. The NT device generates an IP multicast monitoring stream directed to a group address, and transmits the monitoring stream to the LT devices. The LT devices then monitor for packets directed to the group address. When an LT device detects a loss of one or more packets directed to the group address, the LT device reports packet loss for the IP multicast monitoring stream to the NT device.

A method and system for testing a Local Area Network (LAN) coupled to a satellite network through a Customer Premises Equipment (CPE) is disclosed. The method includes: providing a LAN diagnostics tool disposed on the CPE for executing a plurality of tests; receiving, at the LAN diagnostics tool, a test request comprising an execution environment indicator; selecting a test agent based on the execution environment indicator; sending in response to the test request, from the LAN diagnostics tool, the selected test agent; and testing the LAN with communications between the LAN diagnostics tool and the selected test agent being executed on a device connected to the LAN.

A communication system comprises a transmission apparatus configured to transmit data via a plurality of communication lines, and a reception apparatus configured to receive the data from the transmission apparatus. The transmission apparatus includes processing circuitry configured to generate information regarding QoS of the plurality of communication lines. The processing circuitry is further configured to designate assignment of the data to communication lines of the plurality of communication lines on a basis of at least (i) the information regarding the QoS of the plurality of communication lines and (ii) assignment information indicating an assignment status of a data amount and a communication line transferred in the past. The transmission apparatus includes communication circuitry configured to allocate and transmit the data to the assigned communication lines of the plurality of communication lines on a basis of an instruction from the processing circuitry.