9 results about "Network method" patented technology

In a network relay router 10, a multicast routing protocol processing module 11A sequentially sends a join request message (CP1) to a router 30a functioning as a rendezvous point via an interface 101, based on the settings of a multicast group address or destination address and a sender VRF name. The network relay router 10 receives a multicast packet (DP1) from the router 30a via the interface 101 and acquires a sender address or source address of a transmission device SE from the received multicast packet. The network relay router 10 sends a join request message (CP2) via an interface 102 on the side of the transmission device SE and receives a multicast packet via the interface 102. This establishes an optimum multicast route (MR) between the transmission device SE and the network relay router 10.

To solve the problem that errors generated in solving an infrared cloud image eyed typhoon two-dimensional surface wind field through ordinarily used algorithms are large, the invention provides a method for performing inversion on an eyed typhoon two-dimensional surface wind field by combination with novel algorithms of an SVM and a PDE. The method comprises the steps of first performing typhoon eye wall extraction on an infrared cloud image provided by a weather bureau by combination with the PDE algorithm, obtaining coordinate values and gray levels of every point of an eye wall, utilizing the SVM to perform modeling of the average gray level and the maximum wind speed of a typhoon close to the center, finally performing eye wall segmentation on the randomly given infrared cloud image, extracting reference point gray levels to serve as a model to perform input to obtain the reference point wind speed, and utilizing a linear interpolation to perform inversion of the whole two-dimensional surface wind field. According to experiments, the average error obtained through the method is 2.9m/s, the performance is better that that of a linear regression method and a radial basis neural network method, and a powerful basis is provided for typhoon intensity forecast.

Methods and systems for identifying and preferring certain content transmissions over others for transport in a multiple subscriber computer network, such as public broadband access network. Preferred transport includes exempting participating content transmissions from bandwidth preservation policies, such as byte capping or rate limiting, or permitting the broadband access network provider to bill for certain identified content transmissions. The participating content transmissions are identified on a number of bases including by sending or receiving application, or by use of tags embedded by the content originator, sender or distributor. Those tagging techniques are also usable to enforce the content owner's distribution rights.

The invention discloses a modeling method for low-frequency ground wave propagation delay time-varying characteristics, and the method is specifically implemented according to the following steps: step 1, building a long-term experiment detection system of low-frequency ground wave propagation delay, obtaining propagation delay data, and carrying out the preprocessing of the data; step 2, acquiring meteorological data of three meteorological factors of temperature, humidity and wind speed of an area where a receiving point is located; step 3, analyzing the time-varying characteristics of the low-frequency ground wave propagation delay according to the propagation delay data obtained in the step 1 and the temperature, humidity and wind speed meteorological data obtained in the step 2; and step 4, establishing a propagation delay prediction model by using a BP neural network method. According to the invention, the precision of the low-frequency ground wave positioning navigation and timeservice system is improved.

The embodiment of the invention discloses a virtual mobile network method. The method comprises the following steps that: a mobile cloud terminal receives data transmitted by a terminal; data communication tunnels are established between the mobile cloud terminal and mobile cloud through at least two different mobile networks; the mobile cloud terminal judges whether the communication quality of the data communication tunnels is lower than a threshold or not; and if so, the mobile cloud terminal is switched to another data communication tunnel to perform data communication. The invention also discloses an embodiment of a virtual mobile network system. Through adoption of the virtual mobile network method and system, switching of the mobile networks can be realized.

A communications network, method and computer program product for managing network calls. Calls between mobile stations at base transceiver stations (BTS), each connected to a different base station controller (BSC) in a different switching sub-domain are passed between BSCs over a dedicated line between endpoints. Call linkage for the calls pass in call context objects separate from the calls and need not pass in a signaling channel with the calls.