102results about How to "Reduce transmission delay" patented technology

The present invention relates to retransmissions in a communications system. A method and system of reducing uplink retransmission delay of a radio communications system by introducing an uplink MAC ARQ layer of Node B is disclosed. Further, a MAC PDU data indicator for soft combining control in Node B and RLC PDU reordering is introduced.

A method for implementing a stall avoidance mechanism during uplink transmission of data blocks from transmitter to a receiver includes first determining a missing data block in response to a successful receipt of a received data block at the receiver. Once the missing data block is determined, the receiver requests retransmission of the missing data block. The receiver starts a timer when the request for retransmission is made such that the timer has a time value based on the number of reception attempts of the received data block made by the receiver.

The invention discloses a P2P stream media live-broadcast low-delay transmission method comprising the following steps of: collecting multimedia frames in a multimedia data stream and coding the multimedia frames by multimedia; slicing the coded multimedia frames into multimedia data packets of about 1KB and numbering each sliced multimedia data packet; transmitting the multimedia data packets to each broadcasting node through a live-broadcast network; and receiving the multimedia data packets by the broadcasting nodes, combining the multimedia frame data packets into the multimedia frames and playing the multimedia frames. The invention also discloses a P2P stream media live-broadcast low-delay transmission system comprising a multimedia frame collecting module, a multimedia frame slicing module, a multimedia frame data packet transmission module, a multimedia frame recombination module, and the like. The invention improves transmission efficiency, reduces transmission delay and bandwidth waste and increases data transmission stability.

The invention provides a polarization code coding method, a decoding method, a coding device and a decoding device. The coding method comprises the following steps: a coding device generates a first bit sequence according to target information needing to be transmitted to a decoding device, wherein the first bit sequence includes information bits and fixed bits, and the information bits are used to carry the target information, and the fixed bits are used to carry preset information; the coding device determines a check bit according to the first bit sequence; the coding device generates a second bit sequence according to the first bit sequence and the check bit; and the coding device generates a polarization code sequence according to the second bit sequence. Decoding delay can be reduced, and the user experience can be improved.

The embodiment discloses a method and a device for realizing a local exchange, which includes: acquiring calling user information and to-be-called information; inquiring a data dictionary, judging whether a local exchange can be carried out between a calling user and a to-be-called user, according to the calling user information and the to-be-called user information; controlling the local exchange between a calling user and a to-be-called user to be carried out, if the local exchange between a calling user and a to-be-called user can be carried out. The embodiment of the invention reduces theoccupation of the core network resource, and shortens the transmission time delay of speech.

The invention discloses a data transmission method and an apparatus thereof. The method comprises partitioning the data into at least one fragment and transmitting the fragment, wherein the fragment is provided with the size of fragment and the transmission time interval; adjusting the size of fragment and transmitting data according to the adjusted size of fragment within the time delay detection time; detecting the time delay change for data transmission within the time delay detection time; according to the result of the time delay change and on the basis of the preset adjusting rule, dynamically adjusting the size of fragment and the transmission time interval, and transmitting the data according to the adjusted size of fragment and the adjusted transmission time interval to enable the time delay change to achieve the preset scope; and transmitting the data according to the size of fragment and the transmission time interval when the time delay change achieves the preset scope. In the embodiment, the size of fragment and the transmission time interval can be automatically adjusted according to the current time delay change, thus adjusting the number of fragments, reducing the transmission time delay, and guaranteeing that the transmission time delay for various data is the lowest.

The invention provides a route maintenance method between the MESH points, which is applied in the network including the multiple MESH points, this method includes the following steps: the MESH point broadcasts the notification message to other MESH points which includes the source MESH point address and route information; the MESH points receiving the notification messages determines the optimized route with the MESH point according to the route information. The invention also provides route maintenance system and MESH point between the MESH points. Based on the HWMP protocol, the invention also provides one simple and effective MESH point route learning method, drives and maintains the route learning of the MESH points via the MP ANOUNCEMENT information, so it avoids the route request response process in the HWMP protocol and reduces the transfer delay of the packet.

The invention discloses a route repair method based on AODV and a link failure type, which requires that a mobile node broadcasts a close notification message before the close. An upstream node at the disconnection position of a link initiates a local repair process. Firstly, the upstream node broadcasts a route request packet within the range of one hop; if the upstream node receives a close notification message from a downstream node, the upstream node tries to establish the route of a next two-hop node or a destination node of data packet to the upstream node; if the upstream node does not receive the close notification message from the downstream node, the upstream node tries to establish the route of a next one-hop node or the destination node of the data packet to the upstream node; and secondly, if the first route repair fails, the upstream node broadcasts the route request packet within the range of a network and tries to establish the route to the destination node of the data packet. The method can reduce the route repair time after the link is disconnected, reduce the cost for control packet needed by the route repair, and improve the performance of an Ad Hoc network.

The invention discloses a GPU box PCIE extended interconnection topology device. The device comprises a GPU box, wherein the GPU box comprises eight groups of interconnected GPUs, a CPU server connected with the GPUs and a PCIE switch module; the PCIE switch module installs a high-speed interconnected cable card through a PCIE slot to realize interconnection among different GPU boxes; the GPUs areconnected through the PCIE switch module; the CPU server is connected with the GPU box through a PCIE link; the PCIE switch module extends the PCIE link into eight groups of PCIE X16 links to realizeconnection between the CPU server and the eight groups of GPUs. Through the device, independent design of a standard PCIE interface GPU box is realized, maximization of GPU performance is guaranteed,transmission delay is short, extensibility is good, flexible configuration and matching usage can be realized, and GPU box design needed for high performance and artificial intelligence is provided.

The method includes steps: after determining that both the node of sending end (NSE) and the node of receiving end (NRE) are located within local mobile management domain controlled by local mobile anchor point (LMAP), LMAP starts up optimizing route; access device attached to NSE forwards message to be sent to the access device attached to NRE directly without need of forwarding by LMAP; after receiving message, the access device attached to NRE forwards the message to NRE. Thus, the invention can optimize route, and reduce transmission delay. The invention also discloses the system for routing message of local mobility management network. The system includes NSE, NRE, the access device attached to NSE, and the access device attached to NRE.

The embodiment of the invention discloses a method, device and system for transmitting uplink data. The method comprises the following steps of: initiating a scheduling request transmission and a competition-based uplink data transmission to base station equipment when the uplink data are required to be sent by user equipment; and selecting the channel type of the current transmission by the userequipment according to the transmission capability of the user equipment when the scheduling request transmission conflicts with the competition-based uplink data transmission, and sending the uplinkdata or a scheduling request according to the channel type. By virtue of the method, the transmission reliability of the uplink data can be improved and the transmission delay is shortened.

The invention discloses a data transmission method and device and a network node. The method comprises: enabling a first node to obtain data information and secret key information of data recorded ona first block chain; obtaining encrypted data according to the data information, and obtaining a secret key according to the secret key information of the data; and decrypting the encrypted data by using the key to obtain data. According to the method, the characteristic of data sharing on the block chain is utilized, so that the first node of the requester can directly obtain the data informationfrom any block chain node of the block chain, the burden of repeated transmission of the data information between a core network or a plurality of routes is further reduced, and the transmission delay is reduced.

The invention provides a method for realizing routing in a wireless network, a forwarding node and the wireless network. The wireless network comprises a plurality of nodes. The method comprises the following steps of using nodes which information data sent by a first forwarding node with a first transmitting power can reach as neighbor nodes of the first forwarding node in the nodes; selecting a first neighbor node, determining the next second forwarding node to transmit the information data according to the size relationship between the second link energy consumption between the forwarding node and the non-first neighbor node and the first link energy consumption between the forwarding node and the first neighbor bode. The technology is applicable if any changes of the nodes in a wireless network exist, thus, the information data can be flexibly transmitted; and moreover, as the power of the transmitted information data between the selected forwarding nodes is smaller than the first transmitting power, thus, the energy consumption for transmitting information data is saved, and the transmission delay is reduced.

The invention discloses a method and equipment for transmitting data. The method includes that relay nodes RN acquire transmission layer care-of addresses distributed by a target donor evolved node B DeNB for the relay nodes RN; the relay nodes RN inform serving gateways S-GW corresponding to user equipment UE of the transmission layer care-of addresses, and the serving gateways S-GW transmit the data which are required to be transmitted to the relay nodes RN to the target donor evolved node B DeNB by the aid of the transmission layer care-of addresses. The method and the equipment in an embodiment of the invention have the advantages that the relay nodes RN inform the serving gateways S-GW corresponding to the user equipment UE of the transmission layer care-of addresses which are distributed to the relay nodes RN by the target donor evolved node B DeNB, so that the serving gateways S-GW corresponding to the user equipment UE can directly transmit the data to the target donor evolved node B DeNB, the data can be prevented from being transmitted through P-GW (data packet networks gateway) (RN)/S-GW (RN) in data transmission procedures, the UE data packet transmission delay can be shortened, transmission load on a network can be reduced, return link resources between the P-GW (RN)/S-GW (RN) and the target donor evolved node B DeNB can be saved, and the user experience can be improved.

The invention discloses a power transmission and transformation equipment state online monitoring method integrating edge calculation and deep learning. According to the invention, the method comprises the steps: completing the acquisition of power transmission and transformation equipment image information through a monitoring equipment layer; enabling an edge network layer to realize the mutualcommunication between the monitoring equipment layer and an edge server layer; enabling the edge server layer to preprocess the acquired image information of the power transmission and transformationequipment; enabling a mobile core network layer to realize mutual communication between the edge server layer and the cloud server layer; and enabling the cloud server layer to complete the power transmission and transformation equipment state classification and fault identification according to the fusion edge calculation and a trained deep learning model. Compared with an existing power transmission and transformation equipment state on-line monitoring method, the power transmission and transformation equipment state on-line monitoring technology has the advantages of being high in recognition precision, low in transmission time delay, low in cost and the like.

The invention discloses a time-sensitive network data transmission system and transmission method. The system comprises end equipment serving as a data transceiving point, a clock synchronization module for providing an accurate synchronous clock for a network, and bridge equipment playing a switching role, in the bridge equipment, a port flow monitoring and filtering module provides a supervisionmechanism for port data entry management and control, priority queues provide at most eight priority queues, a transmission scheduling module provides a transmission mechanism for time-sensitive datatransmission, and the scheduling module is preempted to optimize time-sensitive data transmission delay. The internal memory unit performs centralized management on the to-be-converted data frames. The system adopts a perfect data shaping scheduling mechanism, so that strong real-time data can preempt weak real-time data, the preempted data can continuously occupy a channel to be transmitted after the strong real-time data is transmitted, a set of rapid transmission solution is provided for future deterministic data, the transmission delay of the data is greatly reduced. The reliability and stability of data transmission are improved.

The embodiment of the invention discloses a circuit commutative (CS) field service processing method for receiving the calling UE confirmed by the base station and a called UE located in a same base station and a same gathering base station, sending the local loop indication. According to the local loop indication, the communication mode of the calling UE and the called UE is shifted as the local loop mode. The embodiment of the invention also discloses a CS field service processing system and a device. The method, system and device of the invention can reduce the bandwidth demand and the service flow transmitting time delay.

The invention relates to a UAV communication TDMA networking method, system, device and storage medium. The UAV communication TDMA networking method includes that a base station sends broadcast signals to a UAV so as to enable TDMA time slot synchronization of a UAV and the base station; the base station receives UAV time slot distribution requests; the base station generates TDMA time slots according to the quantity of the received UAV time slot distribution requests so as to enable the UAV to perform data transmission on the corresponding TDMA time slots. Dynamic generation and distributionof the quantity of the TDMA time slots of the base station are realized and the quantity of the TDMA time slots is decided according to the number of UAVs. Therefore, defects of channel waste when thequantity of UAVs is small and time slot distribution incapability when UAV data is excessive due to fixed time slot quantity in a prior TDMA communication method are made up. According to the invention, the UAV performs data transmission on the TDMA time slots, so that transmission efficiency and reliability are improved effectively, interaction time requesting is not required and transmission time delay is reduced.

A mobile communication system for supporting a Multimedia Broadcast/Multicast Service (MBMS) is provided. More particularly, an apparatus and a method for applying a direct tunnel feature in order to reduce a transmission delay of a mobile communication system for providing an MBMS. The system includes a Gateway GPRS Support Node (GGSN). The GGSN omits transmission of data to a Serving GPRS Support Node (SGSN) and transmits data to a Radio Network Controller (RNC) using the direct tunnel feature when transmitting data.

The objective of the invention is to provide a method, apparatus and system for shortening a transmission delay of time division duplex in a base station. The method according to the invention comprises the following steps: when a request of shortening the transmission delay of time division duplex from at least one user equipment of a cell is received, obtaining configuration indication information corresponding to the cell, wherein the configuration indication information comprises information used for indicating to change the data transmission direction of one or more time slots for transmitting downlink data in the original uplink and downlink configuration; and sending the configuration indication information to the at least one user equipment so as to reconfigure the uplink and downlink configuration of the at least one user equipment based on the configuration indication information.

The embodiment of the invention discloses a data transmission method and device. The data transmission method applied to a relay server comprises the steps of receiving an original data packet sent bya transmitting end; sending first feedback information to the transmitting end according to a receiving state of the original data packet; carrying out FEC (Forward Error Correction) coding on the original data packet, thereby generating FEC redundant information and an FEC data packet, wherein the FEC data packet is generated based on the original data packet and the FEC redundant information; and sending the FEC data packet to receiving end. The method and the device are characterized by low transmission delay, high reliability and high transmission quality.

The invention discloses a real-time communication routing method for a wireless sensor network, and the real-time communication routing method comprises the steps of obtaining the transmission speed of data packets between a current node and all predecessor neighbor nodes of the current node by calculation according to communication delay between the current node and the predecessor neighbor nodes of the current node and queuing delay of the predecessor neighbor nodes after the current node receives the data packets which are sent from an upstream node to a base station node, taking the obtained transmission speed of the data packets as forwarding selection standard, and selecting the next hop of the node in a predecessor forwarding neighbor table to forward the data packets. The real-time communication routing method can effectively ensure that the data packets can select a path with higher efficiency for forwarding during the real-time forwarding process, reduce transmission time delay of the data packets and simultaneously improve the transmission reliability of the data packets.

The invention discloses an IEEE 802.11 WLAN (wireless local area network) low-delay energy-saving technique. A WLAN is an infrastructure WLAN comprising an AP (access point) and a plurality of motion stations STA. The energy-saving technique includes an AP operating step and an STA operating step, wherein an idle timer and a sleep timer are optimized at the STA end. The IEEE 802.11 WLAN low-delay energy-saving technique has the advantages that the technique is energy-saving, delay in data packet transmission is reduced, and memory overhead of the STA and AP in the WLAN is also reduced.

The embodiment of the invention provides a network system and a network communication method. The system comprises a third party server of an IP transmission network located at a wireless access network or between the wireless access network and a wireless core network, and a border node, wherein the border node guides a TCP message corresponding to the TCP connection aiming at a center sever by the equipment to the third party server; the third party server comprises an application server or a cache server for storing the distributing data of the center server and responding to the TCP message according to the distributing data. Through the adoption of the system provided by the embodiment of the invention, the cache server or the application server is sunk to the IP transmission network located at the local wireless access network or between the wireless access network and the wireless core network, and the border node is deployed to guide the TCP message aiming at the center server to the cache server or the application server to realize the flow dispatching. Therefore, the transmission delay to a grouping core network from the wireless access network is reduced, and the user experience is improved.

The invention relates to a data transmission system and method under mobile network environments. The method comprises the steps of: receiving request data transmitted by a client through an API, and converting the transmission protocol of the request data into a UDP and sending the UDP; receiving the request data by the UDP, and converting the transport protocol of the request data into a TCP and sending the TCP to a server; receiving the response data sent by the server through the TCP, and converting the transport protocol of the response data to the UDP and sending the UDP; and receiving the response data by the UDP, and sending the response data to a client application through the API. The data transmission system and method can be applied to a client application program with low cost, not depend on client operating system environments, and reduce transmission delay under the condition that original service does not need any adaptation; the system and method have the characteristics of concise server deployment framework, convenient operation and management, and low upgrade cost.

The invention discloses an edge cooperation caching method under a hierarchical wireless network supporting D2D communication. The method comprises the steps that whether a local cache of a device receiving a content request contains request content or not is checked according to the content request; if yes, the request content is hit; if not, routing selection is performed based on a deep reinforcement learning algorithm to hit the request content; and after the request content is hit, the model of the deep reinforcement learning algorithm is updated. According to the method, a deep reinforcement learning algorithm is applied to collaborative cache configuration of a user equipment layer in a mobile wireless network; the unsupervised learning of the cooperative cache of the user equipment is realized, the hit rate of the maximum cache is taken as an optimization target, and the flow is unloaded to the periphery of the user as much as possible, so that the flow transmission in the cellular network is greatly reduced, and the transmission delay of the user request content is shortened.

Embodiments of the present invention provide a wireless communications method and system, a network device, and user equipment. The method includes: sending, by a network device, resource configuration information to user equipment, where the resource configuration information indicates a first transmission resource corresponding to first transmission, and a unit duration for occupying the first transmission resource for the first transmission is less than 1 millisecond; and communicating, by the network device, with the user equipment based on the first transmission resource. In this way, a transmission delay can be shortened, user experience can be greatly improved, and performance of a wireless network can be greatly enhanced.

The present invention relates to an IPv6-based power line carrier communication network congestion control method, and belongs to the intelligent power grid communication technology field. The method comprises the following steps of S1 using carrier network nodes to construct a congestion control-based IPv6 hierarchical forwarding tree network topology structure to thereby reduce the node congestion probability; S2 when the nodes congest, broadcasting a congestion notification message in a multicast manner to carry out the flow distribution on the parent and child nodes again, and combining an IPv6 protocol to enable the noticed nodes to transmit the message according to a corresponding redundant routing addressing method to transfer the flow of a congestion area to other areas of lighter loads to thereby avoid the congestion nodes; S3 after the congestion of the nodes is released, broadcasting a congestion release message in the multicast manner to enable the parent and child nodes to recover an original flow distribution mode. The method of the present invention enables the network throughput and the network overall communication capability to be improved effectively.

Embodiments of the present invention disclose a signaling processing method. The method includes: in a downlink subframe set, generating a downlink assignment index (DAI) respectively for a downlink subframe that has a physical downlink control channel (PDCCH) to be sent, where a value of the DAI is generated according to a preset rule and a sequence of carrier first and then subframe; and sending the PDCCH to the user equipment, where the PDCCH carries the DAI. According to the embodiments of the present invention, a transmission delay is shortened and transmission efficiency is improved.

The invention discloses a space coupling based LDPC code HARQ retransmission mechanism, and belongs to the technical field of error control. A receiving end stores old code sequences failed in transmission in a buffer; a transmitting end constructs a coupling basis matrix and generates a coupling extension verification matrix, codes the old information sequences failed in transmission and to-be-transmitted new information sequences after being subjected to splicing so as to obtain new code word sequences, stores the new code word sequences in the buffer after the punching positions of the old information sequences and the new information sequence are removed from the new code word sequences, and then selects a code sequence with a certain length and transmits the code sequence through a channel; and the receiving end decodes the received code sequence and the old code sequences in the buffer by utilizing the coupling extension verification matrix and an old decoding verification matrix. By utilizing the error correction performance and retransmission chance of the newly transmitted sequences to restore the sequences failed in transmission in an IR-HARQ mechanism, the space coupling based LDPC code HARQ retransmission mechanism can reduce the ARQ retransmission probability and system delay and can improve the throughput of the system while improving the reliability of a communication system.