Embodiments are directed to a computer system for managing data transfer. The computer system includes a memory, a processor communicatively coupled to the memory, a send component and a receive component having a message queue and a controller. A link interface communicatively couples the send component to the receive component. The link interface includes a mainline channel and a sideband channel, and the computer system is configured to perform a method. The method includes transmitting mainline channel messages over the mainline channel from the send component to the receive component. The method further includes transmitting sideband channel messages over the sideband channel from the send component to the message queue of the receive component. The method further includes utilizing the controller to control a flow of the sideband channel messages to the message queue without relying on sending feedback to the send component about the flow.

A method of encapsulating data and a single frequency network configured to perform the method are disclosed. A content stream of data packets is received, and the data packets in the content stream are formatted in accordance with a first protocol. Information identifying a container size established for the content stream is received. The data packets formatted in accordance with the first protocol are fragmented and packed to form data units formatted in accordance with a second protocol, and the data units are sized based on the container size. The data units formatted in accordance with the second protocol are encapsulated to form second protocol data packets. The second protocol data packets are provided to a transmitter that is synchronized to one or more transmitters in a single frequency network so that each transmitter in the single frequency network broadcasts a same signal that includes the second protocol data packets.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for receiving from a plurality of publishers messages of a first channel of a plurality of distinct channels wherein each channel comprises an ordered plurality of messages, storing messages of the first channel in one or more first buffers according to the order, each first buffer having a respective time-to-live, for one or more connections, determining a respective sampling rate based on a data type of the first channel and a determined latency of the connection, receiving from a subscriber through a first connection a request for messages of the first channel, selecting messages in the first buffers according to the order and the sampling rate, and sending the selected messages using the first connection to the subscriber according to the order.

A method for communication includes receiving and forwarding packets in multiple flows to respective egress interfaces of a switching element for transmission to a network. For each of one or more of the egress interfaces, in each of a succession of arbitration cycles, a respective number of the packets in each of the plurality of the flows that are queued for transmission through the egress interface is assessed, and the flows for which the respective number is zero are assigned to a first group, while the flows for which the respective number is non-zero are assigned to a second group. The received packets that have been forwarded to the egress interface and belong to the flows in the first group are transmitted with a higher priority than the flows in the second group.

The invention is directed to a method and system for selecting queues for source-based queuing in a packet router, requiring only one flow per destination route. The invention stores source interface information for each packet while it is being processed. The invention applies to packet routers including IP routers, Ethernet routers and Label Switched Routers (LSR).

In one embodiment, a device in a network receives a switchover policy for a particular type of traffic in the network. The device determines a predicted effect of directing a traffic flow of the particular type of traffic from a first path in the network to a second path in the network. The device determines whether the predicted effect of directing the traffic flow to the second path would violate the switchover policy. The device causes the traffic flow to be routed via the second path in the network, based on a determination that the predicted effect of directing the traffic flow to the second path would not violate the switchover policy for the particular type of traffic.

Described is a low latency re-timer for systems supporting spread spectrum clocking. The re-timer comprises: a first clock frequency estimator to estimate a frequency of a receive clock (RX CLK) and to provide a first timestamp associated with a first clock that underwent spread spectrum; a second clock frequency estimator to estimate a frequency of a transmit clock (TX CLK) and to provide a second timestamp associated with a second clock that underwent spread spectrum; and a comparator to compare the first timestamp with the second timestamp.

A method for a wireless device of a wireless system is disclosed. The method utilizes a byte-in-flight (BIF) value as an indicator to determine whether to drop the transmission control protocol acknowledgement (TCP ACK) packet according to the BIF value, where the BIF value is an amount of data of the wireless connection which is sent by the first device but not acknowledged yet when obtaining the TCP ACK packet. The wireless device establishes a wireless connection with a first device.

As an example, a method includes storing, in non-transitory memory, prioritization rules that establish a priority preference for egress of data traffic for a first location. The first location includes a first location apparatus to control egress of data traffic for the first location apparatus and a second location apparatus at a second location, which is different from the first location, to receive data traffic and cooperate with the first apparatus to measure bandwidth with respect to the first location. The first location apparatus is coupled with the second location apparatus via at least one bidirectional network connection. The method also includes estimating capacity of the at least one network connection for the egress of data traffic with respect to the first location. The method also includes categorizing each packet in egress data traffic from the first location based on an evaluation of each packet with respect to the prioritization rules. The method also includes placing each packet in one of a plurality of egress queues associated with the at least one network connection at the first location apparatus according to the categorization of each respective packet and the estimated capacity. The method also includes sending the packets from the first location apparatus to the second location apparatus via a respective network connection according to a priority of the respective egress queue into which each packet is placed, such that the first location apparatus transmits at the estimated capacity for the egress of data traffic.

When a signal-to-noise ratio affecting radio communication becomes sufficiently low, then the data transmission rate is responsively decreased in compensation. The signal-to-noise ratio of the communication link is thereby increased. Data for multiple different services is transmitted in data packets between two radios. By allocating one part, or time slot, of the data packet's payload to one service, and allocating another part, or time slot, of the data packet's payload to another service, communications sessions for multiple services can be maintained concurrently. Services are prioritized relative to each other. In case the signal-to-noise ratio becomes too low, data packet portions that are related to lower-priority services can be omitted from some data packets before those data packets are transmitted. Data remaining in the packet can be sent at a reduced data transmission rate without causing the quality of service for the remaining packets to fall below the minimum required level.