5153results about How to "Increase transfer rate" patented technology

A system for delivering content, such as video content, via a network. In an illustrative embodiment, the system includes a server system that is connected to the network and has access to the content. A client system is adapted to forward a request for the content to the server system via the network. One or more content-delivery routines in communication with the server system are adapted to initiate sending of the content to the client system via multiple streams over the network in response to the request.

Available bandwidth utilization during transfer of large files over a TCP / IP network is improved by load balancing data streams and dynamically controlling the number of data streams utilized. A determination is made of the optimum number of data streams for a particular data file transfer in the early stage of transmission. An initial number of data streams, which is one unless otherwise specified or determined, is used to transmit one or more file segments, each on a different data stream, immediately followed by a second initial number of data streams, which is at least two greater than the initial number of data streams, is used to transmit another portion of the large data file. During each transmission, individual and aggregate transmission bandwidths are determined. Responsive to a determination that the latest aggregate transmission bandwidth is significantly different from the previous aggregate transmission bandwidth, the number of data streams is modified.

The invention discloses a method, equipment and a system for transmitting data. The method comprises the following steps that: a first class of user terminal serves as a relay user node between a second class of user terminal and a network side; and the second class of user terminal forwards data messages to the network side through the first class of user terminal. By the method, the equipment and the system, the cost can be reduced, the transmission rate can be improved, and the technical defect that service with high requirements on data transmission rates is difficult to guarantee or the manufacturing cost is increased in the prior art is overcome.

The invention provides a method, device and system for data scheduling and transmission. The method includes the following steps: configuring scheduling information according to a predetermined scheduling mode of unauthorized uplink subframes, he wherein scheduling information is used for indicating a terminal to perform transmission of uplink data on an unauthorized frequency spectrum; and receiving uplink data sent by the terminal according to the scheduling information. The problem of lack of technologies of reducing signaling overheads and improving an unauthorized frequency spectrum uplink transmission rate in related technologies causes reduced uplink data transmission efficiency is solved, and the effects of reducing signaling overheads and improving the unauthorized frequency spectrum uplink transmission rate are achieved.

The invention relates to a cross-physical isolation data transparent transmission system between an intranet and an extranet. The system comprises a first enterprise service bus and a second enterprise service bus which are respectively arranged on the two sides of physical isolation, wherein a first safety data transmission adapter and a second safety data transmission adapter are respectively deployed on the first and second enterprise service buses, the physical isolation is arranged between gateways of the intranet and the extranet for performing network safety area isolation, the first and second enterprise service buses are used for respectively providing calling interfaces and simultaneously communicating with the physical isolation, and the first and second safety data transmission adapters are respectively responsible for safety certification and calibration of integrity and effectiveness of data of the intranet and the extranet. The invention further relates to a cross-physical isolation data transparent transmission method of the system. Improvement of data transmission can be performed under a physical isolation environment through the system and the method, the difficulty in transformation and the workload of the service system can be simplified, and the safety in data transmission can be further enhanced through the safety data transmission adapters.

The invention relates to a method for automatic recognition and stage compression of medical image regions of interest based on an artificial neural network. Medical image files in a digital diagnostic system are generally larger, and due to the limitation by factors of bandwidth and the like, the transmission speed is low, the effect is not good, and the diagnosis quality is influenced. By the method, medical digital images are subjected to noise elimination, the tissue outline of a human body is recognized, tissue images are subjected to multiple times of overlay operation, image features of the regions of interest are strengthened, feature values are extracted, classification is performed by using an artificial neural network method, the regions of interest and corresponding levels are determined, and tagged image file format (TIFF) images are generated in different compression modes according to different levels of the regions of interest and non-regions of interest. By the method, the medical image files are greatly lessened, the transmission speed is increased, and effective necessary information used for diagnosis and treatment in the images is kept, so the method facilitates the reading of doctors, and can be applied to the digital diagnostic system and a remote medical system, and improve the diagnosis and treatment efficiency and effect.

A method of sending a data flow including a video flow from a sending entity to a receiving entity over a telecommunications network, includes having the sending entity: obtain from the receiving entity information about a downlink bandwidth available for reception of the data flow at the receiving entity side; obtain information about an uplink bandwidth available for the transmission of the data flow at the sending entity side; set transmission parameters of the data flow to be sent to the receiving entity based on the information about the available downlink bandwidth and the available uplink bandwidth; and transmit the data flow in accordance with the set transmission parameters.

The invention discloses a double-data modulation method of pulse and OFDM. An optical spectrum of a single chip white light LED is formed by exciting fluorescent powder of yellow color or red-green color and the like by a blue light, and the shape of the whole optical spectrum has two relative independent peak values, wherein the responding speed of the blue light is higher than that of a warm color light. The invention can be used for transmitting data by pulse modulation of the blue light and can be used as a carrier wave for the warm color light OFDM modulation, thus a double channel high-speed data transmission is realized. In addition, the blue light can be used as a reference simultaneously for OFDM symbol synchronization, direct current offset estimation and channel estimation.

The invention relates to a nano carbon material with a network structure consisting of polymer chains, in particular to a nano carbon sulfur composite material with a network structure suitable to be used in a secondary lithium sulfur battery anode and a preparation method thereof. The carbon sulfur composite material is formed by adopting the following steps of: introducing functional groups onto carbon particles by adopting the electric conductivity and the porosity of a carbon material and the reaction capacity of similar condensed aromatics of the carbon material and by means of an irreversible chemical reaction; introducing the polymer chains, wherein the polymer chains are stretched, bent and cross-linked on the surfaces of the carbon particles to form a cross-linked network structure; and compounding a sulfur element or a polysulfide (m is more than 2) containing -Sm- structure into the network structure to form the nano carbon sulfur composite material with the network structure. The carbon sulfur composite material has a rich cross-linked network structure, nano-scale network pores constrain the sulfur element or the polysulfide (m is more than 2) containing the -Sm- structure in the network, and the active substances are limited in a certain region to react, so that the composite material has predominant electrochemical performance.

An embodiment of the invention discloses a screen sharing method, associated equipment and a communication system. The screen sharing method includes that a screen sharing service is started on a first mobile terminal; the first mobile terminal receives a screen sharing service access request coming from N second mobile terminals and corresponding to the screen sharing service through a wireless local area network, wherein the first mobile terminal and the N second mobile terminals are arranged in the wireless local area network, and N is a positive integer; if the N second mobile terminals are allowed to access to the screen sharing service, the first mobile terminal encodes contents displayed in a first region of a first mobile terminal screen into first video streaming and transmits the same to the N second mobile terminals through the wireless local area network. By the screen sharing method, support by a screen sharing technology to scenarios with highly demanded fluency and real-time performance is beneficially improved, and mobile terminal participation and screen sharing flexibility can be enhanced so as to increase the number of screen sharing participants.

The invention discloses a method for preparing cross-linking waterborne adhesive for lithium ion batteries. Waterborne polymers containing organic carboxylic acid, amino or hydroxyl and a water-soluble micromolecular cross-linking agent containing hydroxyl, amino or carboxyl are jointly used as raw materials of the waterborne adhesive and subjected to cross linking through esterification and amidation under the condition of coating and drying of electrode plate paste of the lithium ion batteries. A preparation process is simple, existing lithium ion battery production process conditions are unchanged, electrodes high in bonding performance, flexibility and elasticity are obtained, and problems of low bonding strength among electrode active substances, conductive agents and current collectors and looseness and shedding due to insufficiency in elasticity for relieving expansion and contraction in charging and discharging processes of the lithium ion batteries in the prior art are solved.

The invention relates to a preparation method of a solar light splitting water hydrogen production catalyst without noble metal as a cocatalyst. Specifically, graphene is used as a cocatalyst to prepare semiconductor nanoparticle-graphene composite photocatalysts, including CdS-graphene composites and TiO2-graphene composites. The hydrogen production efficiency of the photocatalyst with graphene as the cocatalyst is comparable to or even higher than that of the photocatalyst containing the same mass of noble metal Pt under the same hydrogen production conditions. Graphene materials have good electron aggregation and transport functions, which promote the effective separation of electrons and holes, reduce the probability of proton recombination, and increase the photocatalytic efficiency of photocatalysts and the efficiency of photo-splitting water to produce hydrogen; and the preparation method of graphene materials is simple , cheaper than precious metals, and has no pollution to the environment, which is conducive to large-scale preparation and production. The preparation of photocatalysts using graphene as a cocatalyst has opened up a new method for reducing the cost of hydrogen production from solar energy and improving the efficiency of hydrogen production by photolysis of water.

The invention relates to a multimodal orbital angular momentum multiplexing system and method. The system comprises a transmitting device and a receiving device which are in mutual communication connection. The transmitting device comprises a bit level processing module, a constellation mapping module, an orbital angular momentum modulation module, a digital domain orbital angular momentum multimodal multiplexing module, a DAC module, an upper conversion module and a ring array transmitting antenna. The receiving device comprises a ring array receiving antenna, a down conversion module, an ADC module, a digital domain orbital angular momentum demodulation and demultiplexing module and a detection decoding module. According to the system and the method, a vortex electromagnetic wave multimodal OAM (Orbital Angular Momentum) multiplexing communication technology of which physical feature is clearly different from that of a traditional plane wave is realized; the spectral efficiency and the transmission rate are multiplied; and the improvement space and potential of the modal multiplexing quantity is further expanded. The system and the method can be applied to the multimodal OAM multiplexing communication system in a microwave or millimeter wave band.

The invention provides a method for activating and deactivating an auxiliary carrier in a dual carrier HSDPA, which comprises the following steps: judging whether a terminal is scheduled on a main carrier or an auxiliary carrier in a preset scheduling period; according to a judgment result, calculating a historical throughput rate on a priority queue; under the condition of reaching a scheduling period with a preset quantity, sampling historical throughput to obtain a maximum value; comparing the maximum value of the historical throughput and a preset threshold; and according to a comparison result, selectively activating and deactivating the auxiliary carrier or keeping the state of the auxiliary carrier unchanged. The invention also provides a device for activating and deactivating the auxiliary carrier in the HSDPA. The method and the device achieve the aim of activating and deactivating the auxiliary carrier timely for UE according to the load condition of the UE, also reduce additional network control overhead brought by HS-SCCH order transmission, save the power consumption of the UE and improve the transmission rate of the UE.

A method for recording information on a recording medium utilizing an interference pattern by interference between an information light modulated spatially with digital pattern information displayed on a spatial light modulator having multiple pixels and a reference light for recording. In order to provide a novel recording method capable of enhancing the recording density and the transfer rate furthermore, digital information to be recorded is represented by match / mismatch of the attributes of adjacent pixels in the spatial light modulator to produce digital pattern information.

The invention discloses a method for cooperation partner selection and precoding cooperative communications in a cellular communication system. The method comprises the following steps: (1) a user terminal with bad uplink channel quality sends a cooperative communication request to a base station; (2) the base station selects a partner terminal for the user terminal; (3) in a first frame of a cooperation period, the user terminal sends local data to the base station, and the base station and the partner terminal receive the data simultaneously; (4) in a second frame of the cooperation period, the partner terminal sends the local data to the base station, and the base station and the user terminal receive the data simultaneously; (5) in a third frame of the cooperation period, the user terminal and the partner terminal preprocess the relay data by a precoding matrix which is fed back by the base station, and send the relay data to the base station simultaneously; and (6) the base station judges the signals received in the transmission time slots of different frames in a combination way to obtain an estimated value of the sent signal. The method has the advantages of low complexity and high utilization rate of the system resources, and is used for the reliable data transmission in the cellular communication system.

Provided is a method, system, and an article of manufacture for maintaining data accessible by a host in two storage devices, wherein the data is comprised of a plurality of data sets. A determination is made of a percentage of uncopied data at the first storage device, wherein uncopied data comprises data sets to be copied from the first storage device to the second storage device. If the calculated percentage is greater than a threshold amount, a rate at which uncopied data sets are transferred from the first storage device to the second storage device is increased.

The invention provides a preparation method of a graphene based reinforced and flame-retarded recycled polyester staple fiber. The method comprises the following steps: preparing graphene master batch; preparing phosphate based halogen-free flame retardant master batch; weighing the graphene master batch and the phosphate based halogen-free flame retardant master batch, mixing with a recycled polyester raw material, drying, feeding molten dried raw materials into an impurity removal stirrer under the action of a screw extruder by a melt pump for carrying out homogenization impurity-removal treatment, feeding a homogenized and impurity-removal polyester melt into a secondary filter by the melt pump, enabling a filtered melt to pass through a mixed melt on a pipeline to enter a spinning manifold, carrying out drafting processing on a spun fiber to obtain the reinforced and flame-retarded recycled polyester fiber, cutting off bundles and packaging. The reinforced and flame-retarded recycled polyester chip has the good spinning forming property, the fiber quality is high, the using amount of a fire retardant can be effectively reduced under the synergistic effect of grapheme and the phosphate based flame retardant, the cost is reduced, the reinforcement effect can be achieved and the mechanical property of the fiber is effectively improved.

The invention discloses an Internet of Vehicles deployment system based on fog computing and relates to the field of Internet of Vehicles deployment and planning. A road side unit RSU collects vehicle traffic information and sends the information to fog equipment; the fog equipment processes and forwards the vehicle traffic information and temporarily stores the vehicle traffic information; and the fog equipment uploads the stored vehicle traffic information to a server cluster, and the server cluster controls the vehicle traffic information through computation and analysis of a big data result and makes a reasonable traffic strategy. According to the system, the fog equipment is introduced to the edge of the network, and meanwhile, the fog equipment temporarily computes and stores the vehicle traffic information, so that the bandwidth resources are saved and the data transfer rate is improved.

The invention relates to a carbon-sulfur-shell matter composite material having a network dual-core shell structure and a preparation method thereof. The carbon-sulfur-shell matter composite material has a carbon-sulfur-shell three layer structure, a central core (inner core) is nano carbon particles, sulfur elemental or a polysulfide containing-Sm-structure (m>2) is directly deposited on the nano carbon particles, or functional groups are introduced onto the nano carbon particles by use of polycyclic aromatic hydrocarbon like reaction capacity of the carbon material and through an irreversible chemical reaction, polymeric chains are introduced in, a crosslinked network structure is formed through stretching, bending and crosslinking of the polymeric chains on the surface of the nano carbon particles, the sulfur elemental or the polysulfide containing the-Sm-structure (m>2) is composited onto the crosslinked network structure to form a nano sulfur layer having a network structure, then a mono-core shell nano composite material having a network structure is obtained and is used as a second layer (outer core) of the carbon-sulfur-polymer composite material having the network dual-core shell structure, an outermost layer is a shell matter layer, electronic and / or ionic conductivity of the material are / is improved, dissolving loss of discharge products can be further inhibited, and structural stability of the material is improved. The material is suitable for positive poles of lithium sulfur batteries, and has a prominent effect on improvement of cycle stability of the lithium sulfur batteries.

The present invention provides a method and apparatus for data compression that includes representing each sub-pixel of each pixel with a pointer corresponding to an attribute of the sub-pixel, the attribute being a floating point binary number. An overall attribute of each pixel is then determined. The determining of the overall attribute of each tile may include any one of assigning the attribute of the sub-pixels to the overall attribute of the pixel when the sub-pixels are represented by an identical pointer, and resolving the overall attribute of the tile by the attributes of the sub-pixels when the sub-pixels are represented by non-identical pointers of the pixel.

The invention relates to the communication field, and discloses a data service transmission method of a dual-mode terminal and the dual-mode terminal. The method comprises the following steps of: preferably residing in a first network system with higher transmission rate at the beginning of the data service; and estimating the channel quality of the first network system with the higher transmission rate by using the existing data transmission condition as the prior knowledge, comparing the theoretical rate of a second network system, and selecting the network capable of obtaining the highest transmission rate to reside. Under the condition of not increasing the cost nor changing the hardware of the conventional dual-mode terminal, the service data can be transmitted at higher transmission rate, and the user experience can be improved.

An embodiment of the invention discloses a webpage loading method. The webpage loading method includes: a server sends a webpage request to a server and loads an overall frame of a requested webpage returned by the server, and first screen content of the requested webpage is loaded to corresponding position of the overall frame; the browser displays the first screen content, and the frame with all or part of the first screen content loaded enters a visible region of the browser; when the frame in the visible region changes, and the browser determining a need of loading of new content in the frame in the current visible region sends an acquisition request to the server to request acquisition of the new content to be loaded; and the browser loads the new content returned by the server at the corresponding position of the overall frame and displays the new content in the current visible region. The embodiment of the invention further discloses a server, a terminal and a webpage loading system. The webpage loading method, the webpage loading system, the browser, the terminal and the server can load webpages dynamically according to users' requests, and accordingly webpage response rate is increased.

The invention provides a neural network equalization method used for an indoor visible light communication system, and belongs to the visible light wireless communication technology field. The method includes the steps: utilizing a ceiling bounce model to calculate a VLC channel impulse response, carrying out photoelectric conversion for a visible light power signal received by a receiving end, and sending a sequence to a neutral network channel equalizer after amplification sampling; utilizing a heredity algorithm to optimize initialization weights and thresholds among neurons, establishing a neural network for training, and minimizing an error function; and judging an output, restoring the sent sequence, and finally achieving an equalization purpose. According to the scheme, interference among codes is obvious minimized, an error rate is reduced, the communication quality is further improved, a transmission rate that the system can reach is increased, the training time is shortened, and the system complexity is reduced.

A steady-state visual evoked brain-computer interface method is based on the stimulation of two frequencies of left and right visual fields, and relates to a visual evoked presentation method of a visual brain-computer interface. The brain-computer interface method is characterized in that four different targets are combined through two blinking frequencies by utilizing a principle of the crossing of the left and the right visual fields; and a correlational analysis method is used to identify which target is watched by a user after brain electrical acquisition equipment records a multi-brain electrical signal in the visual brain area. The equipment and the method of the invention comprise a recording mode of the brain electrical signal, lead selection and signal preprocessing, and a feature extraction method. The visual target presentation method of the invention can be realized through a screen display of a common computer, and the size, the brightness and even the color of the target can be controlled easily. Compared with other steady-state visual evoked brain-computer interfaces, the presentation method can increase the number of the targets under a condition that the usable frequencies are limited, thereby improving the brain-computer interaction ability.

The invention provides a real-time stream media transmission terminal and a real-time stream media transmission method based on a multi-connection technology. The terminal is formed by additionally installing a signaling control unit and a media transmission unit on the basis of a single-connection terminal, the signaling control unit is in charge of completing the negotiation and the building of a multi-connection link, and the media transmission unit is in charge of completing the receiving and sending transmission function of the media. The real-time stream media transmission terminal and the real-time stream media transmission method have the innovation advantages that the multi-connection data transmission building possibility is improved, so the resource utilization rate and the transmission efficiency are improved, and more data can be transmitted in shorter time. In addition, through a jamming control algorithm, a flow rate distributing dispatching algorithm and a connection quality evaluation algorithm based on RTPs (real time protocols) and RTCPs (real-time transmission control protocols) adopted in the method provided by the invention, the data transmission speed can be obviously accelerated, the time delay is reduced, and the unnecessary fast re-transmission is reduced, so the experience effect of users is obviously improved.