An aspect of the present disclosure enables each receiver node of a wireless network to synchronize active widows with those of the sender node. In an embodiment, a receiver node receives a packet from a sender node on a wireless network, with the packet including data indicating a position of the packet in an active window of the sender node. The receiver node determines the position at which the packet is received in an active window of the receiver node. The receiver node determines a difference between the two positions and adjusts a start position of the next active window (of the receiver node) based on the determined difference to synchronize the future active windows at the receiver node to respective active windows at the sender node.

According to one embodiment, a method of performing a re-establishment procedure in a mobile communication system includes: receiving at least one packet data convergence protocol (PDCP) control plane data unit; performing an integrity check on the at least one PDCP control plane data unit; identifying an integrity check failure with regard to the at least one PDCP control plane data unit; and performing a re-establishment procedure if the integrity check failure is identified to exist with regard to the at least one PDCP control plane data unit.

In one embodiment, methods and systems for port pooling are described. An interface may communicate with at least one physical server. The at least one physical server may host a plurality of virtual servers and be connectable via a plurality of gateway ports to a storage area network (SAN). A virtual server manager configured to arrange the plurality of gateway ports in a plurality of port pools, define a virtual server group including a plurality of virtual servers, associate each virtual server with one or more port pools, the one or more port pools defining available gateway ports for access by the particular virtual server; and provide configuration instructions to allow the particular virtual server to communicate with the SAN through the available gateway ports.

A method is disclosed for selectively turning off a switch arrangement for current distribution. A corresponding switch arrangement is also disclosed, including an upstream switch and a directly downstream switch connected in series, each switch being configured to check a current condition associated therewith. Connected between the upstream switch and the downstream switch is a communication link onto which the downstream switch puts a delay signal if its current condition is met and there is no fault present. Following reception of the delay signal, the upstream switch opens only after a delay time. In order to ensure turning off when there is a fault in the opening of a downstream switch even in the case of small overcurrents, when the current condition is met and the fault that prevents opening occurs, the downstream switch puts a fault report onto the communication link that trips the upstream switch.

One embodiment of the present invention provides a switch system. The switch includes a port that couples to a server hosting a number of virtual machines. The switch also includes a link tracking module. During operation, the link tracking module determines that reachability to at least one end host coupled to a virtual cluster switch of which the switch is a member is disrupted. The link tracking module then determines that at least one virtual machine coupled to the port is affected by the disrupted reachability, and communicates to the server hosting the affected virtual machine about the disrupted reachability.

A method for reducing packet loss includes: performing automatic and real-time adjustment to cost values of a first route and a second route, so that the cost value of the corresponding route of the primary pseudo wire (PW) is lower than that of the corresponding route of the secondary PW. A corresponding system is also provided. Automatic and real-time adjustment to cost values of the first route and the second route, enable the cost value of the corresponding route of the primary PW to be lower than that of the corresponding route of the secondary PW, and therefore enable the downlink traffic not passing through the PW that just recovers from a failure, thereby reducing packet loss when the downlink traffic passes through the PW while the primary PW just recovers from a failure.

A method for migrating a data schema comprising combining a first deterministic finite automaton with a second deterministic finite automaton to generate a modified deterministic finite automation. Identifying a state of the modified deterministic finite automaton without computed followers. Computing a new vector of original states for each state of the modified deterministic finite automaton corresponding to the identified state.

This application discloses a communications method and related communications apparatus and system. The method includes recovering, by a first node, when detecting that a first packet is lost, the first packet according to a local recovery mechanism. The first packet is a packet obtained based on a packet sent by at least one first terminal to at least one second terminal, and the first node is a node on a network path between each first terminal and a second terminal communicating with the first terminal. The method further includes adding a first identification information related to local recovery, and sending the first packet. This application can reduce a transmission delay and improve transmission efficiency.

Embodiments of the present disclosure provide methods and devices for data transmission by a switch. The method can include transmitting, by the switch, over a first path, a first packet that is received from a first host to a second host; receiving a replacement packet from the first host, wherein the replacement packet is transmitted from the first host in response to a determination that the first packet was lost and wherein the replacement packet includes a path indicator; and based on the path indicator of the replacement packet, transmitting, over a second path different from the first path, at least part of the replacement packet to the second host.

Communication apparatus includes a host interface and a network interface, which receives from a packet communication network at least one packet stream including a sequence of data packets, which include headers containing respective sequence numbers and data payloads containing slices of the data segment having a predefined, fixed size per slice. Packet processing circuitry is configured to receive the data packets from the network interface, and to map the data payloads of the data packets in the at least one packet stream, using a linear mapping of the sequence numbers, to respective addresses in the buffer.