A system and method for managing bandwidth of an upstream communications channel in a communications system.

Data Center Bridge (DCB)-based path selection methods and systems reduce packet loss in a network system comprising a Link Aggregation Group (LAG) topology. In embodiments, once traffic received at a LAG node and identified as DCB traffic, links whose DCB status are identified as “up” are assigned to a LAG sub-trunk that may be used to forward the DCB traffic on the LAG trunk, while non-DCB traffic is forwarded to any member of the LAG, irrespective of DCB status. In addition, DCB traffic received from a LAG peer node, which sends traffic on an inter-node link (INL) when no DCB-enabled links to a downstream device are present, is identified as DCB traffic and forwarded on a LAG sub-trunk that comprises DCB-enabled links. An egress mask that indicates to not forward the traffic received at the LAG node on the INL may be overridden, such that DCB traffic may be forwarded.

Embodiments of a device and method are disclosed. In an embodiment, a method of communications involves generating a packet for communications in a wired communications network, where the packet includes a header and a payload, and where the header includes packet type information that indicates a network connection within the wired communications network in which the packet is used, and transmitting the packet through the network connection.

This application provides a data transmission method. The method includes: An electronic device first establishes an MPTCP connection to an application server, where the MPTCP connection includes two TCP connections. Then, the electronic device receives indication information from an application server, where the indication information includes a type identifier and a parameter. When the type identifier indicates a low data transmission delay requirement, the electronic device receives, in a first time period after the electronic device receives the indication information, the data stream by using a first TCP connection. When an accumulated data amount actually received by the electronic device in the first time period is less than a product of the parameter and duration corresponding to the first time period, the electronic device receives the data stream in a second time period by using both the two TCP connections.

This application provides a data transmission method. The method includes: An electronic device first establishes an MPTCP connection to an application server, where the MPTCP connection includes two TCP connections. Then, the electronic device receives indication information from an application server, where the indication information includes a type identifier and a parameter. When the type identifier indicates a low data transmission delay requirement, the electronic device receives, in a first time period after the electronic device receives the indication information, the data stream by using a first TCP connection. When an accumulated data amount actually received by the electronic device in the first time period is less than a product of the parameter and duration corresponding to the first time period, the electronic device receives the data stream in a second time period by using both the two TCP connections.

In an aspect, an embodiment of the present disclosure is directed to network control topology that implements a centralized network controller to deterministically assign, and reassign, underlay multicast groups according to one or more policies and/or parameterized intent of the network administrator. The centralized network controller, in some embodiments, comprises a map server-neap resolver controller configured to provide deterministic and centralized allocation of underlay multi cast groups, e.g., to provide security, traffic engineering, network and resource management.

A method for congestion control in a data communication protocol employing acknowledged communication may include measuring a flight size. A transmission rate may be measured. A trend of the flight size may be determined. A trend of the transmission rate may be determined, and the trend may be derived from a transmission rate gradient calculation, in which either the transmission rate measurements or the transmission rate gradient calculations or both may be filtered to reduce their temporal variability. Whether there is a congestion may be detected according to the determined trend of the transmission rate and the trend of the flight size. Upon detection of the congestion, a change may be made from a current congestion control state to a new congestion control state. Data may be transmitted while respecting a maximum amount of unacknowledged data which the transmitting node may transmit. An apparatus is also disclosed.

A network node adapted to forward incoming data packets, the network node including a tag identifying unit, adapted to identify a tag of an incoming data packet as a replicate tag; a tag look-up module, adapted to retrieve from a tag table a number of replications and destinations for the replicate tag; a replicating engine, configured to replicate the incoming data packet according to the number of replications, thereby generating replicated data packets; and a forwarding unit, adapted to forward the replicated data packets to the destinations.

This disclosure describes an architecture for supporting MBS sessions in a wireless access network. Each of such MBS sessions is flexibly and dynamically delivered by the access network into one or more Point-To-Point (PTP, or unicast) and Point-To-Multipoint (PTM, or multicast) delivery instances. As such, a subset of the UEs participating in the MBS may be configured to receive the MBS session in a PTP-like manner and quality. The architecture further allows for access network level switching of one or more of the UEs participating in the MBS session between the PTP mode and PTM mode. Such switching are effectuated dynamically without involvement of application layer. The resource allocations and configuration for the PTP and PTM delivery instances may be performed in the access network collaboratively between a central unit (CU) and one or more distributed units (DUs). Such collaborative resource allocation and configuration may be effectuated using a novel architecture for the signaling messages between the CU and the DUs.

Methods, systems, and computer readable media described herein can be operable to facilitate an IGMP fastleave using a listener reference count. A gateway proxy saves each listener for every specific multicast group, thus the gateway knows if a listener is the last one in the group when it receives a leave report from a listener. The gateway leaves the group immediately without sending specific query if the leave report comes from the last listener of the current group, thereby significantly reducing the leave latency. Otherwise, the standard procedure wins, and the gateway sends out a specific query when the leave report is not from the last listener.