36results about How to "Improve data transfer throughput" patented technology

A data transport system for transporting data between a server (21) and a client receiver (27) over a network (23) includes a receiving proxy cache (25) coupled to a client receiver (27) via a reliable connection (29), such as a cable connection. The majority of data is transported from the server (21) to the receiving proxy cache (25) over an efficient data transmission channel (41). The receiving proxy cache (25) verifies the status of the data transmitted over the efficient channel (41). If there is an error in the data transmission, a portion of the data associated with the error is retransmitted from the server (21) to the receiving proxy cache (25) over a reliable data transmission channel (43). The complete data at the receiving proxy cache (25) is delivered to a client receiver (27) over a reliable connection (29).

A packet size control method allowing reduction in the period of time during which transmission is in a blocked state is disclosed. The size of a packet to be sent is determined depending on a measured round trip time (RTT), a current bandwidth of the data link layer, and a current congestion window size. First, a maximum segment size (MSS) is obtained based on the measured RTT and the current bandwidth of the data link layer using a table obtained by data transfer simulation. Thereafter, the obtained MSS is corrected using the current congestion window size. And the correct MSS is used to determine the final segment of data to be sent.

A semiconductor device is disclosed in which a plurality of memory cores are provided on a semiconductor chip. Each of the memory cores comprises: first and second circuit regions and a first and second through electrode groups. a first power supply is supplied in the first circuit region in which a data bus for parallel data is driven, and a second power supply separated from the first power supply is supplied in the second circuit region in which the parallel data and serial data are bidirectionally converted. The first through electrode group includes through electrodes supplying the first power supply to the first circuit region, and the second through electrode group includes through electrodes supplying the second power supply to the second circuit region.

A system and method for robust data loss recovery in a wireless local area network is provided. The method includes splitting user data into multiple data fragments. The method further includes creating multiple beacon frames by placing each data fragment in a unique beacon frame and broadcasting the beacon frames through a wireless medium by an access point of the network. Prior to transmission, the method includes arranging the frames into a plurality of groups and creating a parity frame for each group, to be transmitted along with the beacon frame. After transmission, the beacon frames are received by a wireless client and data fragments are extracted from each beacon frame. At the receiving end, the wireless client checks whether all the transmitted beacon frames have been received. Finally, the user data is reconstructed from the extracted data fragments by reassembling the data fragments.

The invention discloses a multi-carrier communication method and device of a TDD mode MIMO wireless communication system. The wireless communication system has a plurality of channels of base band signals, and each channel of signals include two spatial flow signals; the method includes the steps that frequency conversion is carried out by a transmitter on the multi-channel two-spatial-flow base band signals two times to obtain different-frequency single carrier microwave frequency band signals of the multi-channel two-spatial-flow, then the different-frequency single carrier microwave frequency band signals are merged to form a single channel of cross polarization double-spatial-flow multi-carrier microwave frequency band signals to be transmitted through a single antenna, the single channel of cross polarization double-spatial-flow multi-carrier microwave frequency band signals are separated by a receiver into multiple-channel two-spatial-flow single carrier microwave frequency band signals, and down-conversion is carried out on the multiple-channel two-spatial-flow single carrier microwave frequency band signals two times to obtain the multiple channels of base band signals. The invention further provides the multi-carrier communication device of the TDD mode MIMO wireless communication system in the mode. Compared with the prior art, the multi-carrier communication method and device have the advantages that abundant spectrum resources of millimeter waves can be effectively utilized, and the data transmission handling capacity of the wireless communication system can be improved in a multiplied mode.

The invention provides a method of adjusting a satellite relay data transmission communication rate in a self-adaptive manner, and aims to provide a transmission method which is low in time delay andreliable in transmission, and can efficiently improve data transmission throughput. The method is realized through the following technical solution: in an aircraft flight process, calculating of a pointing angle alpha of a phase control array antenna and an antenna pointing angle beta in real time by a relay terminal wave beam pointing calculation module, sending the same into a data finding module, using the pointing angle alpha of the phase control array antenna and the antenna pointing angle beta as a finding address to find and obtain actual effective isotropic radiated power (EIRP) of thephase control array antenna in real time from a memory of a relay terminal by the data finding module, sending the actual EIRP of the antenna into a threshold comparison criterion module, completingjudgment on the actual EIRP of the phase control array antenna and link status according to the antenna pointing angle alpha and the antenna pointing angle beta, and then completing self-adaptive adjustment of the communication rate according to the link status.

The invention belongs to the technical field of communications, and especially relates to a cooperative spectrum sensing implementation scheme based on a cognitive radio technology in a wireless communication system. The invention provides a perceptual information fusion method based on energy detection, wherein after local spectrum sensing based on energy detection of all cognitive nodes is completed, a fusion center and all users participating in spectrum sensing cognition adopt the perceptual information fusion method provided by the invention to realize fusion of perceptual information, therefore, the accuracy of a spectrum sensing result and the scope of spatial application can be improved, the time overhead of reporting a local perception judgment result to the fusion center by all cognitive nodes can be reduced and the cooperative sensing performance better than a traditional cooperative perception fusion rule can be obtained.

A data transfer control device 1061 includes a read pointer update unit 5004 updating a value of a global read pointer RPg with a value of a local read pointer (first local read pointer) RP11 held by a local read pointer hold unit 5007 when completion of data transfer is recognized and a position, in an order of reading descriptors, of a descriptor D3010a indicated by the local read pointer RP11 is earlier than positions of descriptors D3010b and D3010c respectively indicated by local read pointers (second local read pointers) RP12 and RP13 held by the other data transfer control devices 1062 and 1063.

A semiconductor apparatus comprises a data processing unit for processing data, a buffer for temporarily storing the data processed by the data processing unit, and a buffer control unit for causing the data stored in the buffer to be burst-transferred to a data storage unit. The buffer control unit allows burst-transfer of the data stored in the buffer to be started before full amount of data to be transferred in a single burst-transfer is stored in the buffer.

A disk array controller having a first interface unit to a host computer, a second interface unit to a plurality of disk drives, a cache memory unit for temporarily storing data to be transferred to and from the disk drives, and a selector unit provided between the first and second interface units and the cache memory unit, wherein a plurality of connection requests from the first and second interface units are queued to preferentially process a connection request for a vacant access port to the cache memory unit.

The invention provides a smart TV antenna and a smart TV. The smart TV antenna is disposed in the TV, the smart TV antenna comprises: a printed circuit board, wherein the printed circuit board comprises a first surface and a second surface, which are opposite to each other; a grounding metal layer, wherein the grounding metal layer is disposed on the first surface; at least two radiation regions,wherein the at least two radiation regions are disposed on the second surface; and a metal loading layer, wherein the metal loading layer is disposed on the second surface and is located between the radiation regions, the metal loading layer is electrically connected with the grounding metal layer through a through hole passing through the printed circuit board, and the radiation regions are electrically connected with the metal loading layer to enhance the vertical polarization characteristics of the radiation regions. The smart TV antenna provided by the invention enhances the vertical polarization characteristic, which is beneficial to improving the data transmission throughput rate and the omnidirectionality, and reducing the dead zones of wireless signals of the TV.

The invention discloses a data transmission method and system for a Ka band downlink. According to the invention, the space information network communication scene is taken into account; the judgment condition of whether the sensing strategy is required or not under the given space communication condition is deduced; the self-adaptive transmission strategy of a single link based on the judgment condition is given; a data transmission scheme to improve the data transmission throughput of two or more Ka band independent downlinks is proposed based on the single downlink; and the adaptive transmission strategy scheme based on the delay CSI is verified under different channel conditions; therefore, the data transmission throughput of the Ka band space communication can be improved effectively, and the file transfer efficiency is improved.

The invention discloses a UART (Universal Asynchronous Receiver/Transmitter) data transmission method. The method comprises the following steps: a sending end marks a sending channel as a normal sending channel or an abnormal sending channel; the normal sending channel obtains data from the priority buffer area and the normal buffer area in sequence and writes the data into the sending buffer areaso as to send the data to a receiving end; the receiving end performs integrity judgment on the received data, returns feedback information to the sending end, and processes the received data; judging whether the sent data exceeds the maximum retransmission frequency or not when the sending end judges that the data transmission is not successful; if so, transferring to a priority buffer area, andtransmitting by other normal transmitting channels; if not, directly resending the data; and when the sending end judges that the data transmission is successful, starting the transmission of the next frame of data. According to the invention, multiple UART channels are adopted for data distribution and transmission, mutual pressure reduction is realized, and the pressure of data transmission ofeach channel is averaged, so that the average efficiency of data transmission is effectively improved.