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

A radio base station includes multiple antennas associated with a cell. Multiple mobile radios are selected to receive transmissions over a shared radio channel during a predetermined time interval. Information is transmitted over the shared radio channel to multiple mobile radios in the cell during the predetermined time interval using multiple antenna beams. As a result, interference from the transmission appears as white additive Gaussian noise in time and in space in the cell. A “flashlight effect” caused by a single beam transmission over the shared channel during a predetermined time interval that would normally detrimentally impact mobile channel quality detection is avoided. Other methods for avoiding the flashlight effect are described.

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.

The invention discloses a data transferring method of the wireless chain circuit control layer, which comprises the following steps: a) the wireless chain circuit control layer receives the server data unit of the upper layer; b) the wireless chain circuit control layer quotes whether the received server data unit has the confirm information TCP ACK; c) the wireless chain circuit control layer first sends the protocol data unit which is corresponding to the server data unit of the confirm information TCP ACK. It provides a RLC data transferring method.

A method and apparatus for downloading a hyper text transfer protocol (HTTP) web page over a wireless link that couples a modem to a gateway. A transmission control protocol (TCP) link is opened between the gateway and the modem. A HTTP uniform resource identifier (URI) is received at the modem from a web browser, where the HTTP URI corresponds to the HTTP web page of an origin server. The TCP link is configured well before the web browser provides the URI. The HTTP URI is sent to the gateway. An Internet protocol (IP) address is determined for a domain name indicated in the HTTP URI by the gateway. The HTTP web page is retrieved by the gateway using the Internet, without the modem requesting it. The HTTP web page is transmitted to the satellite modem. Objects referenced in the HTTP web page are accessed similarly to the HTTP web page, but objects can also be accessed in parallel. In some cases, bandwidth is scaled for the TCP link according to loading of the modem.

The invention discloses a data transmission method. The method comprises: a receiving end receives the capability information of TCP/IP data. The size of the TCP/IP connection window is adjusted according to the capability information and then the adjusted size of the TCP/IP connection window is noticed to a sending end. The TCP/IP data sent by the sending end is received and is cached. The cached TCP/IP data is dispatched and then sent to the receiving end according to the capability information. Simultaneously, the invention discloses a data transmission device and a data transmission system. Using the invention can improve the transmission throughput of the TCP/IP data, guaranteeing the consistency from end to end and avoiding data loss.

The invention relates to a system and method for seamlessly providing services in a mobile video live vehicle in an NDN. The system comprises an NDN controller, NDN nodes, the video live vehicle, a content requester and access points. The video live vehicle walks in the whole network topology range, and is used for receiving Interest packages, sending Data packages and sending MoveInfo packages comprising mobile information to the NDN network controller during access point switching. The content requester sends the Interest packages and receives the Data packages. The NDN controller is used for calculating forwarding outlets of the nodes in the network again according to a new NDN node to be connected when the video live vehicle switches the access points, and the Interest packages in the network are accurately forwarded to the video live vehicle. The round-trip-delay of the request response can be effectively shortened, the control flow is reduced, and the user experience is improved.

The invention belongs to the field of network security posture awareness, and relates to a network security posture information acquisition system and a method based on an SFLOW and an OWAMP (One Way Active Measurement Protocol). The network security posture information acquisition system comprises that a management control module which comprises an endpoint management module, a task configuration module and a task distribution module; a data preprocessing module is responsible for performing data standardization process on SFLOW data information and OWAMP data information acquired by a data acquisition module, removing redundant information acquired by different nodes, and storing the preprocessed data to a data processing center; and a visual module is responsible for displaying assessment information generated by the performance assessment module to a user in an imaging way. A session between a session initiating end and a session receiving end is encrypted by an HMAC (Hash Message Authentication Code) and an NTP clock synchronization protocol, therefore, the network security posture information acquisition system has great advantages in safety and timeliness; furthermore, for a measuring way is compared with a measuring way based on roundtripping, and the round-trip delay can be reduced.

The invention provides an information center network interest packet forwarding method based on reinforcement learning. The method comprises an exploration stage and a utilization stage, wherein during the exploration stage, a Q value is added into a forwarding information table, a candidate port list is acquired according to the longest prefix matching, departure time and the minimum Q value areadded into a data packet, the Q value of a data packet port data flow is computed via information carried in the data packet, the utilization stage is entered after the N1 interest packets are forwarded; when forwarding the interest packets, an intelligent agent also selects the best forwarding port according to probability, when a probability computing formula is met or the N2 interest packets are sent, the utilization stage is ended, and the exploration stage is entered once again. According to the method provided by the invention, an interest packet forwarding process is converted into a path optimization problem, and thus a congestion problem in a network is effectively solved.

The invention discloses a method to lower the influence of an echo on subjective sensation in VoIP communication, and solves the problem that the echo reflected back by a far-end Acom causes a passive influence on the hearing sense of a near-end user. The method includes the steps that device detection is cut in to detect the actual attenuation of the echo and the circulating time delay of the echo; when the cut-in device of the local end finds that the echo is higher, the cut-in device of the local end adjusts the own parameter, and informs the cut-in device of the opposite end through a band inside or a band outside communication way to adjust the parameter in order to lower the circulating time delay of the echo, and reduces the influence caused by the echo reflected back from the cut-in device of the opposite end on the subjective sensation of the local end user. The invention adopts the measures of adjusting the packaging interval of the medium packages and the size of a Jitter Buffer, switching a phonetic code-decode algorithm, and closing the silence detection, etc. to improve the passive influence of the echo on the user.

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.

It is provided an apparatus, comprising a receiving means for receiving a request for control of a data call with an analog bearer capability from a calling party which is attached to an originating switching apparatus of an originating circuit switched network wherein the data call is to be routed to a terminating switching device; a determining means for determining a capability of the terminating switching device based on an identification of the terminating switching device; and an originating instruction means for instructing the originating switching apparatus to reserve, for the data call, an originating interworking function for transforming the data call into a data flow of unrestricted digital information if the determined capability corresponds to unrestricted digital information.

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.

The invention provides a method and a system for supporting multi-domain-name record query based on extension of a pseudo resource record OPT. The method comprises the following steps of step 101.initiating multi-type record query of a domain name; step 103.carrying out extension on the pseudo resource record OPT and packaging into a DNS data packet; step 105.receiving the DNS data packet, extracting corresponding information and carrying out query; and step 107.returning a query result. According to the method and the system, the multi-type record query of the same domain name can be carried out; the information query of any type of records of sub-domains of a main domain can be carried out; multiple journey queries are changed to single query, so that the round trip time of DNS query is reduced; and the method and the system has important significance for various usage occasions, such as DKIM and DMARC.