42results about How to "Reduce round-trip delay" patented technology

The present invention discloses a method and an apparatus for data retransmission in an enhanced multimedia broadcast and multicast service; and the method includes: dividing all user terminals into different user groups according to service priorities of the user terminals, and setting retransmission parameters for the different user groups; and in a particular time period, if the number of times of data retransmission requests received from user terminals in one user group by a base station is not less than a preset value of the set retransmission parameter, performing data retransmission for the user terminals in the user group and retiming; otherwise, when the particular time period expires, performing the data retransmission for the user terminals in the user group and retiming. The present invention improves the data retransmission efficiency of the enhanced multimedia broadcast and multicast service on the premise of ensuring a certain level of impartiality.

In accordance with aspects of the present principles, the quality of voice traffic and bandwidth utilization for data communication over a wireless multi-hop network may be improved. In an implementation of the present principles, a data packet transmission rate over a wireless multi-hop network may be controlled at an interface between the multi-hop network and a wired network based on a voice packet quality measure calculated from network parameters. Voice and data traffic quality and efficiency may be further improved by reordering a packet transmission queue at the interface to avoid timeout and / or varying a packet queue length at the interface using an acknowledgement window transmitted to a data packet sender.

A network node and a method for scheduling transmissions between the network node and a wireless device within the same physical layer resource. The method includes selecting a beam for transmission between a network node and a first wireless device; and determining whether a portion of the physical layer resource remains after allocating a portion of the physical layer resources to a first set of wireless devices within a transmission range of the selected beam. Layer resources are available. If so, the selected beam is adjusted such that a second set of wireless devices that are not within the transmission range of the selected beam are within the transmission range of the adjusted beam. If not (after allocating part of the physical layer resources to the first and second sets of wireless devices), and if there are sufficient physical layer resources for communication between the network node and the first and second sets of wireless devices Transmission using the adjusted beam, the adjusted beam is used to schedule transmissions between the network node and the first and second sets of wireless devices.

The invention discloses a self-maintaining method and a routing and forwarding method of a novel pending interest table. Aiming at the design requirements of fast processing and efficient forwarding of the pending interest table, the present invention proposes a new structure of the pending interest table by improving the structure of the PIT, and further proposes the concept of "prefix value". Prefixes with high value in PIT, and information containing these prefixes can be preferentially queried and processed when interest packets enter and data packets return, thereby saving overall processing time and ensuring the efficient operation of the entire NDN router. It has the advantages of fast retrieval speed, small packet round-trip delay, and low packet loss rate, and can greatly improve the forwarding efficiency of the pending interest table.

The invention discloses an intermediate node, a communication network and a data transmission control method. The data transmission control method comprises the steps of: analyzing an MAC (Media Access Control) address of a port of a former node for sending a data packet, which is carried in the data packet, and analyzing a node sequence number distributed for the data packet by the former node after the intermediate node receives one data packet; carrying out corresponding recording on the analyzed MAC address and the analyzed node sequence number; finding each node sequence number recorded corresponding to the MAC address by aiming at the MAC address of each record when the intermediate node arrives in each confirmation period so as to determine a maximum node sequence number and a node sequence number of a lost data packet; turning back a confirmation message carrying with the determined node sequence number to the former node; determining the data packet received by the intermediate node by the former node based on the received confirmation message, and removing the determined data packet from a corresponding queue of the intermediate node. By application of the data transmission control method, the data transmission quality can be improved.

The invention relates to a method for accelerating a DCOM system, for reducing interaction number of a wide area network using DCOM according to an inherent law of DCOM, so as to enhance DCOM transfer efficiency, comprising the steps of: analyzing all DCOM transfer request with proxy; if corresponding information has been stored in a client proxy gateway, answering the request directly from the client proxy gateway for query operation of a component support interface; if corresponding information has been stored in a client proxy gateway, answering the request directly from the client proxy gateway for query operation of DISPID of a component support interface method; analyzing all DCOM transfer answers with proxy, discarding an answer when the transfer thereof has been acted by the client proxy gateway.