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

Reducing shared downlink radio channel interference by transmitting to multiple mobiles using multiple antenna beams

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.
Owner:TELEFON AB LM ERICSSON (PUBL)

Voice adaptive gateway pacing methods and systems for wireless multi-hop networks

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.
Owner:NEC CORP

Data transmission method for wireless link control layer

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.
Owner:XFUSION DIGITAL TECH CO LTD

HTTP acceleration over a network link

InactiveUS20050210122A1Limiting uplink bandwidthOvercome transmission delay incurredMultiple digital computer combinationsRadio transmissionDomain nameModem device
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.
Owner:QUALCOMM INC

Data transmitting method, equipment and system

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.
Owner:XFUSION DIGITAL TECH CO LTD

Service caching method and device based on mobile edge computing as well as serving base station

The embodiment of the invention provides a service caching method and device based on mobile edge computing as well as a serving base station. The service caching method comprises the following steps:receiving a first video service request sent by a serving base station, wherein the first video service request is used for requesting acquisition of play resources of a target video; and sending pre-cached play resources of the target video to the serving base station, wherein the pre-cached play resources are part of play resources of the target video, and quantity of the pre-cached play resources is determined according to service features of the target video. The method provided by the embodiment of the invention caches part of play resources of the target video, so that only the part ofplay resources cached are sent to a serving base station of a user in an initial caching stage when the user watches the target video, and round-trip delay in the initial caching stage when the user watches the video can be reduced under the premise that an MEC load and cost are not increased.
Owner:CHINA MOBILE COMM LTD RES INST +1

System and method for seamlessly providing services in mobile video live vehicle in NDN

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.
Owner:COMP NETWORK INFORMATION CENT CHINESE ACADEMY OF SCI

Network security posture information acquisition system and method based on SFLOW and OWAMP (One Way Active Measurement Protocol)

ActiveCN104104548AReduce round-trip delayConfirm the direction of congestionData switching networksData informationData acquisition
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.
Owner:HARBIN ENG UNIV

Carrier resource allocation method and device of heterogeneous network

The invention discloses a carrier resource allocation method and a carrier resource allocation device of a heterogeneous network. The method comprises the step that: a base station determines carrier resource allocation information according to user information and a user carrier resource condition. The carrier resource allocation information comprises one or a combination of the following information: using condition of a different carrier frequency / operator carrier resource, a symmetrical selection way for uplink and downlink carriers, a carrier dispatching type, and a pairing way and a link relationship of uplink and downlink carrier resources. The device comprises a carrier resource allocation module, a link carrier selecting module, a carrier dispatching module and a carrier resource pairing and link indicating module. By the method, the setting of the carrier dispatching type, the carrier-dispatching way, the carrier resource allocating way, and pairing and linking of the uplink and downlink carrier resource is realized. The carrier resource allocating and dispatching way can be flexibly configured. A better compromise is performed between improvement on the user and system performance and improvement on carrier resource utilization rate.
Owner:ZTE CORP

Method and systems for allocating bandwidth

InactiveCN101595658AReduce round trip delayReduce round-trip latency perceptionRadio transmissionCommunications systemMessage delivery
A method and a system for allocating bandwidth for VoIP calls over a satellite communication system, in which a remote satellite terminal (VSAT) is requesting to a hub-gateway (HG), bandwidth to be allocated according to a dynamic technique based on the packet rate between an access device (AD) and the remote satellite terminal (VSAT), comprising: a) by the access device (AD), sending a smart IP packet (SP) to the remote satellite terminal (VSAT), having the function of a bandwidth control message packet, containing information on bandwidth allocation requirements for a given set of VoIP calls; b) by the remote satellite terminal (VSAT), identifying the received smart IP packet SP as the control message packet; c) by the remote satelli-te terminal (VSAT), analyzing the information on bandwidth allocation requirements contained in the received smart IP packet (SP); and d) by the remote satellite terminal (VSAT), upon necessity, requesting to the hub-gateway (HG) bandwidth to be allocated in accordance with the analyzed information on bandwidth allocation requirements.
Owner:SIEMENS AG

Information center network interest packet forwarding method based on reinforcement learning

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.
Owner:HENAN UNIV OF SCI & TECH

Method for reducing influence caused by echo to subjective perception in VoIP communication

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.
Owner:ZTE CORP

Method and Apparatus for Data Retransmission in an Enhanced Multimedia Broadcast and Multicast Service

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.
Owner:ZTE CORP

Method, device and base station for guard interval setting

The invention provides a method and a device for setting protection interval, and a base station. The method comprises the following steps: acquiring one or more of transmission delay, time advance and distance of a plurality of terminals connected to a base station relative to the base station; clustering the terminals according to one or more of the transmission delay, time advance and distance to get at least one cluster, wherein each cluster includes at least one terminal; and setting the configuration information of the protection interval of a scheduling sub frame corresponding to each cluster according to the longest transmission delay or the maximum time advance or the greatest distance corresponding to the terminals in each cluster. According to the method, the base station clusters the terminals according to the transmission delay, time advance and distance of the terminals relative to the base station. The length of protection interval can be configured flexibly. The system cost and the risk of inter-station interference in the system are reduced. The round-trip delay is reduced. The user experience is improved.
Owner:CHINA MOBILE COMM GRP CO LTD

Component carrier processing method and system

The invention discloses a component carrier processing method and a component carrier processing system. The configuration of component carriers is finished by the interaction of a preset component carrier configuration indicator used for processing the component carrier between a base station and a user terminal. By the method provided by the invention, the configuration of the component carriers can be finished by only once signaling interaction between the base station and the user terminal (UT) so as to remarkably shorten the round trip delay of the signaling interaction; and simultaneously, the setting of the component carrier configuration indicator improves the configuration flexibility of the component carriers of the base station, and operations comprising addition, deletion and simultaneous addition / deletion over the component carriers in uplinks and downlinks can be finished by changing different fields of the component carrier configuration indicator so as to improve the height flexibility of the base station.
Owner:ZTE CORP

Method and system for shortening network connection delay during long-distance communication

The invention relates to a method and a system for shortening network connection delay during long-distance communication, which shorten the time delay of cross-geographic-area and cross-intercontinental long-distance communication in an internet communication process under the condition of not changing a communication protocol between an original client and an original server. By means of pre-establishing connection of a part of sections in a link, the overall TCP connection establishment delay is reduced, and the method belongs to overlay network. Since TCP handshake and TLS key exchange arenot subjected to long-distance communication, and only the service request itself is subjected to long-distance communication, the time required for TCP handshake and TLS key exchange is obviously reduced, and the delay of the whole communication process is shortened.
Owner:YONYOU NETWORK TECH CO LTD

Reducing latency in circuit switched data calls

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.
Owner:NOKIA SOLUTIONS & NETWORKS OY

A software-defined network control optimization method for large-scale applications

The invention provides a software defined network control optimization method facing large-scale application. The software defined network control optimization method comprises the following steps: 1, an OpenFlow controller analyzes an OpenFlow flow table and divides a decision control region into N decision regions; 2, the OpenFlow controller updates a data packet forwarding rule of the decision regions into OpenFlow decision switching equipment; 3, OpenFlow entrance switching equipment analyzes a data packet and sends the data packet to OpenFlow exit switching equipment or forwards a forward path request flow table of the data packet to the OpenFlow decision switching equipment; 4, the OpenFlow decision switching equipment analyzes the forward path request flow table and forwards the data packet to the OpenFlow exit switching equipment corresponding to a forwarding rule; 5, the OpenFlow controller updates the forwarding rule of the data packet to the OpenFlow entrance switching equipment. Compared with the prior art, the software defined network control optimization method facing the large-scale application provided by the invention can effectively reduce the round-trip-delay of a network and the dependency of the data packet on the controller, improves the network throughput, and is applicable to large-scale network application.
Owner:STATE GRID CORP OF CHINA +3

Intermediate node, communication network and data transmission control method thereof

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.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Method for accelerating DCOM system

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.
Owner:SANGFOR TECH INC

A cloud platform, a method for running an application, and an access network unit

The embodiment of the present invention discloses a cloud platform, including: an Internet unit, used to distribute applications and lightweight servers developed by application service providers to core network units; The weight server is distributed to the access network unit; the access network unit is used to virtualize the terminal, and migrate the calculation task of the terminal to the virtual user terminal in the virtual machine for execution, and the lightweight server Virtualization is performed, and the network service capability of the lightweight server is migrated to the access network unit so that the virtual user terminal runs the application distributed by the core network unit. The embodiment of the invention also discloses a method for running an application and an access network unit. By adopting the invention, the cost of developing cloud products for operators can be reduced, user experience can be improved, and the service promotion effect of operators can be enhanced.
Owner:HUAWEI TECH CO LTD

Method and system for supporting multi-domain-name record query based on pseudo resource record OPT extension

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.
Owner:CHINA INTERNET NETWORK INFORMATION CENTER
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