Abstract:
A system and method for determining end-to-end available bandwidth of a path in a packet-switched communication network. A multi-rate packet chirp injector (12) injects probe traffic packets at different probing rates, u, into the network utilizing a probe chirp. A receiver (16) samples time separation of the probe traffic packets to generate time-separation samples, which are used to calculate relative inter-packet separation strain, e, i.e. inter-packet time-separation change samples at different probing rates. An Expectation-Maximization, EM, analyzer (17) utilizes an EM algorithm to identify useful strain e samples and to estimate parameters of a line 12 representing a direct linear relationship between the probing rate and the inter-packet separation strain e at probing rates greater than a break point. A filter such as, for example, a Kalman filter (18) then determines the available bandwidth of the network path based on the estimated parameters of the line k-
Abstract:
The invention relates to a network node arranged to provide an end user of a network terminal in a local network with an access link to an external network, said network node is arranged to be connected between said local network and said external network. The network node is characterized in that it comprises a control unit arranged to in response to receiving a first triggering information, switch said network node from a normal operational mode into a captive mode, in which said control unit is further arranged to intercept any request from said network terminals to said external network, resolve said request to the IP address of the network node in the local network such that gateway information to the end user of said network terminals is provided. The invention also relates to a method for use in a network node and a computer program product.
Abstract:
A system, computer readable medium and method for providing to a user device (20) location information of a data device that provides a specific asset, where the user device (20) is present in a network (32) that includes at least a serving node (36) and an address of the user device (20) is indicative of a gateway node (35) that is different from the serving node (36). The method includes receiving at the serving node (36) a first message from the user device (20), the first message including a request for the specific asset; sending the first message from the serving node (36) to the gateway node (35); receiving at the serving node (36) a second message from the gateway node (35), the second message including a first location of a first data device (44) that provides the specific asset; modifying at the serving node (36) the second message to include an indication about a second location of a second data device (46) that provides the specific asset, where the first location is different from the second location; and sending the modified second message including the second location to the user device (20) for accessing the specific asset.
Abstract:
The present invention relates to methods and arrangements for arranging a distribution tree in a Peer To Peer P2P streaming system. The system comprises a bootstrapping server (10) that creates an external distribution tree based on received register messages from participating operator external clients (2, 3, 4). The method comprises the following steps: - Configuring an operator controlled node (7) to be a regular node in the created external distribution tree. Configuring the operator controlled node (7) to be a parent node for participating operator internal clients (1, 5, 6).