摘要:
A method, system, device, and computer code product is disclosed in which a sender transmits data to a plurality of receivers via a point-to-multipoint session. The receiver sends data repair requests to the sender requesting data expected but not received and the sender retransmits the expected but not received data via the point-to-multipoint session. The sender can also schedule point-to-point data repair sessions with individual receivers if the retransmission via the point-to-multipoint session does not correct all errors. The sender can be configured to delay point-to-point repair sessions using a randomization mechanism based on the number of receivers using the point-to-multipoint session.
摘要:
A method, system, device and software code product are disclosed which provide efficient multicast/broadcast distribution of formatted data. Formatted data can comprise metadata and content (media data) and several embodiment of the inventions disclose retransmitting the metadata in order to increase the reliability of the file distribution by increasing the chances that the metadata is received without error. In addition, embodiments of the invention disclose scheduling transmission of data packets of formatted data so that the metadata packets are transmitted at an earlier time location than they occur in the original formatted data file to decrease latency in file playback.
摘要:
A method used for communicating packets or other information units from a server (11) to a client (15) over a communication path including a packet scheduler (14-1) followed by a bottleneck path (14-2), with the packet scheduler (14-1) having a buffer for holding packets so as not to transmit over the bottleneck path (14-2) at a rate either too high or too low, the method providing that the server (11) communicate to the client (15) sender information indicating the last packet sent to the client (11) by the server (11) and do so via a mechanism by which the sender information is communicated over the bottleneck path (14-2) ahead of substantially all packets already in the buffer. The client (11) then uses the sender information to provide, as needed, information useful in adapting the rate at which the packets arrive at the packet scheduler (14-1)
摘要:
The systems and methods include scalable feedback during point-to-multicast (PtM) streaming sessions with user feedback during a broadcast/multicast streaming session. The method of providing scalable feedback during PtM streaming sessions can include communicating data from a sender to at least one receiver and communicating feedback from at least one of the at least one receiver to the sender during a multimedia streaming session.
摘要:
Methods, systems, transmitters, receivers, network elements and software applications in a system for acknowledging the reception of sets of data objects, wherein one or more transmitters transmit one or more sets of data objects within respective point-to-multipoint transmission sessions to a plurality of receivers, and wherein repair requests and/or delivery verification reports are transmitted by at least one of said receivers to network elements within point-to-point transmission sessions. Different back-off times are assigned for delivery verification reports and repair requests, at least two delivery verification reports of one receiver are jointly transmitted within one point-to-point transmission session, and a delivery verification report is transmitted after a completed repair session within the same point-to-point transmission session used by the repair session. Furthermore, a minimum set of parameters to be sent in delivery verification reports is shown.
摘要:
A system and method for transmitting protected real-time content from one user to another is described. In a first aspect, a user sends a Rights Object to another user. In a second aspect, a user sends a Rights Object to another user via an intermediate server for a multiparty communication. In this second aspect, the users may be able to switch between designated Rights Objects as needed.
摘要:
A ducting structure for generating wind power from a vertical structure. The ducting structure includes a main housing sized and shaped to be coupled to a wind turbine and located on the vertical structure. The main housing includes a vertically oriented aperture having a first duct leading to the coupled wind turbine and a horizontally oriented aperture having a second duct leading to the coupled wind turbine. The vertically oriented aperture captures a prevailing wind and the horizontally oriented aperture captures an updraft flowing upwardly along the vertical structure. The captured updraft and the prevailing wind are guided through the first and second ducts past the coupled wind turbine.
摘要:
This invention relates to a method, system, transmitter, network element, receiver and software application for a system capable of point-to-multipoint transmission, where one or more data packets are transmitted from a transmitter to one or more receivers, where at least at one specific receiver of said receivers, a reception of repair data packets is required, where repair information is signaled to a repair server in order to trigger a transmission of the repair data packets, and where the repair information comprises information related to the number of transmitted data packets correctly received at the specific receiver. The system may for instance be the 3GPP Multimedia Broadcast Multicast System, the transmission of data packets may for instance be controlled by the File Delivery Over Unidirectional Transport protocol and the signaling of the repair information may for instance be controlled by the Hypertext Transfer Protocol.
摘要:
The present invention relates to a method of recycling aluminum clad materials. In particular, the method relates to recycling clad materials such as brazing sheet comprised of two or more aluminum alloys, by selective melting of one of the alloys. The feedstock is agitated during heating to allow separation of the molten alloy from the unmelted core, and the molten alloy is removed, such as by draining off during the process.
摘要:
In a multimedia streaming network where a client has a receiver buffer to store a plurality of packets received from a server so as to compensate for the difference between data transmission amount by the server and data usage amount by the client, the server should be able to adapt the data transmission rate based on the status of the receiver buffer. For rate adaptation purposes, server reconstructs a list of packets in the receiver buffer based on information provided by the client. The information signaled to the server is indicative of the next unit to be decoded and the sequence number of the packet to which the next unit to be decoded belongs.