This invention discloses a method for controlling a wireless communication device to transmit data packets. The method includes steps of: transmitting data packets; counting retry times of data packets in a predetermined time period and generating a result accordingly; comparing said result with a predetermined value and generating a comparison result accordingly; and reducing transmission time of data packets according to said comparison result.

In one embodiment, a time period is identified in which probe packets are to be sent along a path in a network based on predicted user traffic along the path. The probe packets are then sent during the identified time period along the path. Conditions of the network path are monitored during the time period. The rate at which the packets are sent during the time period is dynamically adjusted based on the monitored conditions. Results of the monitored conditions are collected, to determine an available bandwidth limit along the path.

A system and method for transmitting data in a network comprising the steps of determining a traffic congestion variable of a data transmission node arranged to receive data from one or more source nodes of the network, using the traffic congestion variable to select a preferred transmission mode for use by the one or more source nodes to transmit data to the data transmission node, and switching an operating transmission mode of each of the one or more source nodes to the preferred transmission mode such that the one of more source nodes transmit data to the data transmission node with the preferred transmission mode.

A first network device including a physical layer device. The physical layer device is configured to receive data for transmission to a second network device and receive sideband data for transmission to the second network device. The sideband data corresponds to control information, management information, and/or status information. The physical layer device is further configured to provide, via a first wired connection, the data for transmission to the second network device, generate alignment markers, insert the sideband data into the alignment markers, and selectively provide, via the same first wired connection, the alignment markers including the sideband data inserted by the physical layer device.

A method of analyzing packets performed by a computer, the method includes, for each of a plurality of data transmission apparatuses and for each of a plurality of periods, specifying a number of packets transmitted from each of a plurality of data transmission apparatuses, specifying a number of times that a transmission interval of the packets is equal to or larger than a first value, specifying a ratio of the number of times to the number of packets, specifying amount of increase of the ratio for a period immediately before each of the plurality of periods, specifying a period in which the number of the data transmission apparatuses of which the amount of increase is equal to or larger than a second value is equal to or larger than a third value among the plurality of periods, and outputting first information indicating the specified period.

A timer is associated with a packet of a flow from a VM at an application executing in conjunction with a vSwitch in a host system, using a processor assigned to the vSwitch in the host system. At the application, using a counter, a number of packets of the flow that are received and acknowledged in response packets is counted, the response packets being received from a receiver of the flow. At the application, using a period measured by the timer and the number of received packets acknowledged as counted by the counter, a CWND value is computed. The CWND value is applied to the flow at the vSwitch such that the vSwitch transmits, from the flow to a network, only a number of packets up to the CWND value.

A method of localized congestion exposure within a local loop in a cellular network that is performed by a localized congestion exposure sender node of the local loop. The method includes receiving downlink packets that are destined for a downstream user device. The method also includes receiving packets that have feedback indicating a congestion level from a downstream node of the cellular network. The method further includes inserting a declaration of an expected downstream congestion level into headers of the received downlink packets; and forwarding the downlink packets that have the declaration of the expected downstream congestion level inserted into the headers toward the downstream user device.

A plurality of cache servers, connected to a packet forwarding apparatus, forwarding a packet transmitted and received between a storage apparatus that holds a content under management in store and a user terminal, temporarily holds at least part of the content under management in store. A controller decides an on-screen resolution at the terminal, based on information contained in a content request message from the terminal, and selects a cache server that holds a content of the on-screen resolution in store. The controller instructs the selected cache server to deliver the content. The cache server instructed calculates a bit rate based on a signal received from the terminal. The cache server reads content from the terminal, which is to have the on-screen resolution and a bit rate not higher than the calculated bit rate. The content is stored in a packet and transmitted, then delivered without reducing the user's QoE.

A communication apparatus communicating with an external apparatus via a relaying device is provided. The communication apparatus includes a communication unit configured to perform communication with the relaying device, and a control unit configured to reduce a communication speed of the communication unit to a lower speed if the communication apparatus is to be shifted from a first power mode to a second power mode in which power consumption is lower than that in the first power mode. The communication unit, if the communication apparatus shifts to the second power mode, transmits identification information of the communication apparatus to the relaying device using a first method, and after a predetermined time has passed, transmits the identification information to the relaying device by a second method.

Methods and systems for communicating with rate control. A communication is sent and received from a first device to a second device over a network, wherein the communication comprises at least one audio stream and a second communication stream. A capacity of the network is probed at the first device for the sending and receiving the communication. A presence of a voice in the at least one audio stream is detected at the first device via a voice activity detection of the at least one audio stream. A rate limit is set for the sending and receiving the communication at the first device based on the capacity of the network and the detection of the presence of the at least one audio stream.