33results about How to "Prevent throughput degradation" patented technology

A terminal 211 measures pilot signals transmitted in directional (beam) patterns from an adjacent cell and an own cell, and estimates reception qualities with the presence (high) / absence (low) of the interference from the adjacent cell. The terminal 211 requests data rate request values (DRC1, DRC2) corresponding to the reception qualities with the presence / absence of the interference to the base station 201. The base station 201 shares beam direction schedule with an adjacent cell base station, and confirms the presence / absence of interference to the terminal 211 for each slot. In accordance with the presence / absence of the interference, the base station 201 selects a suitable one of the two values of the data rates requested from the terminal 211, and modulates the data and transmits it.

A method and system for transmitting information between a sending means and a receiving means using packets for information transmission. The receipt of transmitted packets is acknowledged and unacknowledged packets are retransmitted from the sending means. The amount of transmitted unacknowledged information or the number of consecutive unacknowledged packets is detected, and the reason for information or packet loss is determined based on the amount of transmitted unacknowledged information or the number of consecutive unacknowledged packets. This amount is compared with a path maximum transmission unit (PMTU) to determine the reason for loss. A single or small number of unacknowledged packets is determined to be a result of Bit Error Rate (BER), whereas a larger number of consecutive unacknowledged packets may be determined to be congestion. Congestion control parameters are kept unchanged when the reason for loss is caused by Bit Error Rate (BER), whereas control parameters are changed when the reason for loss is congestion.

A dual technology printer includes first and second print stations having a polychromatic print engine and a monochromatic print engine, respectively. The print engines are preferably an ink jet print engine and a thermal print engine. A variable length media queue is formed between the two print stations. The queue may be formed by a guide roller that defines a loop of media between the stations and that is movable to adjust the length of the loop and thereby the length of the queue. Preferably, the second print station has a predetermined pixel addressability and a resolution substantially equal to the addressability to produce sharp borders for machine readable symbologies. In a printing operation, the printing of color images at the first print station may be carried out ahead of demand for a particular batch printing operation during which monochromatic images are printed at the second print station.

A terminal 211 measures pilot signals transmitted in directional (beam) patterns from an adjacent cell and an own cell, and estimates reception qualities with the presence (high) / absence (low) of the interference from the adjacent cell. The terminal 211 requests data rate request values (DRC1, DRC2) corresponding to the reception qualities with the presence / absence of the interference to the base station 201. The base station 201 shares beam direction schedule with an adjacent cell base station, and confirms the presence / absence of interference to the terminal 211 for each slot. In accordance with the presence / absence of the interference, the base station 201 selects a suitable one of the two values of the data rates requested from the terminal 211, and modulates the data and transmits it.

An object of the present invention is to provide an inspection apparatus and an inspection method excellent in that high-sensitivity defect detection performance is achieved without causing throughput degradation even if an adequate contrast of a defective region cannot be obtained due to characteristics of an inspected sample. To achieve the object, according to the present invention, an SEM pattern inspection apparatus for determining defective portions from an image generated based on secondary electrons or reflected electrons generated from the sample after causing an electron beam to repeatedly scan the inspected sample reciprocatingly on a line has a function to use a retrace of the electron beam for image acquisition, precharging, or discharging.

The invention discloses a task-driven multi-gateway cooperation method. A gateway controller in the scheme has global network state information; task scheduling and gateway switching based on a service request and network state information can be realized; multiple gateways exist in a wireless network; the various gateways use different frequencies as data channels, and cover an area together; themultiple gateways are extended to cover a relatively large area; once data of a sensor node is sent to any gateway node, the data can be cooperatively sent to a corresponding aggregation node in themultiple gateways; and thus, low throughput capacity due to multi-hop routing between sensor nodes can be effectively avoided. By means of the method, the gateways can be adaptively switched among 3G,LTE and Ethernet freely according to the network state; furthermore, the quality of service (QoS) of the network can be ensured; and the resource utilization rate, the QoS and the user experience canbe improved.

Disclosed is a wireless communication system capable of minimizing the hand-off throughput for wireless communication systems. The wireless communication system according to the present invention includes a first communication device for carrying out an inquiry and paging with respect to a wireless communication device located within a communication allowance range, and starting a connection with the wireless communication device; and a second communication device for receiving and transmitting data with the wireless communication device when the wireless communication device connected with the first communication device is cut off by a hard hand-off.

A communication device includes a congestion detecting part configured to detect congestion of traffic; and a message generation part configured to generate and send a MTU decreasing message, in a case where congestion is detected by the congestion detecting part and a packet having a MTU equal to or greater than a designated value is received; wherein the MTU decreasing message instructs a sender of the packet having the MTU equal to or greater than the designated value to decrease the MTU.

In a case where an image region to be processing in RGB color space and an image region to be processed in YMCK color space are mixed, if objects converted from RGB representation to YMCK representation are re-converted to RGB representation and RGB rendering is performed, the load on the system is increased, and the throughput of a printing apparatus is degraded. Accordingly, bands to be processed in the RGB color space are separated from print information inputted from a host computer, and pre-rendering is performed on the separated bands. Thereafter, bands to be processed in the YMCK color space are rendered by a rendering processing execution unit. The output order of the data of the respective bands pre-rendered in the RGB color space and that of the other bands are adjusted, and the data are sent to a printer engine.

A scheduling method capable of suppressing, in a multicarrier transmission for which a data channel is scheduled, interferences with adjacent cells to suppress reduction of the line capacity, while preventing reduction of the throughput. This method selects a mobile station, to which the data channel is to be assigned, based on the line quality of the control channel for each of OFDM symbols in the time axis direction, while assigning, based on the line quality of the data channel, the data channel of each mobile station for each of the subcarriers in the frequency axis direction. That is, the method performs, based on the line quality of the control channel, the data channel scheduling in the time axis direction, while performing, based on the line quality of the data channel, the data channel scheduling in the frequency axis direction.

A communication terminal apparatus that can perform an appropriate system operation at the network side and also can avoid a reduction in throughput and a reduction in system efficiency. In this apparatus, a compressed mode calculating part (124) determines, based on compressed information and slot format information, a slot that is a gap in a frame of a compressed mode. A transmission power control part (125) establishes a transmission power obtained by increasing, by Delta Pilot, the transmission power as designated and set by a TPC command for the slots other than the gap in the frame of the compressed mode. A DPCCH transmission power reporting part (127) outputs, to a channel encoding part (128), a report value indicative of the transmission power obtained by removing the effect of Delta Pilot from the transmission power established by the transmission power control part (125).

Provided is a coating device including: a substrate carrying unit which rotatably holds a substrate while the substrate is upright and is able to dispose the held substrate at a first position and a second position; an application unit which includes a liquid material nozzle ejecting a liquid material to each of first and second surfaces of the substrate disposed at the first position; and a removal unit which includes an accommodation mechanism accommodating a part of the peripheral edge portion of the substrate disposed at the second position and a cleaning liquid ejection mechanism ejecting a cleaning liquid to the peripheral edge portion and removes the liquid material of the peripheral edge portion.

A method and system for transmitting information between a sending means and a receiving means using packets for information transmission. The receipt of transmitted packets is acknowledged and unacknowledged packets are retransmitted from the sending means. The amount of transmitted unacknowledged information or the number of consecutive unacknowledged packets is detected, and the reason for information or packet loss is determined based on the amount of transmitted unacknowledged information or the number of consecutive unacknowledged packets. This amount is compared with a path maximum transmission unit (PMTU) to determine the reason for loss. A single or small number of unacknowledged packets is determined to be a result of Bit Error Rate (BER), whereas a larger number of consecutive unacknowledged packets may be determined to be congestion. Congestion control parameters are kept unchanged when the reason for loss is caused by Bit Error Rate (BER), whereas control parameters are changed when the reason for loss is congestion.

In a radio-communication system, when wanting to perform high-accuracy scheduling in a base station, a large number of information items, such as channel quality information, desired precoding matrix information and so on, are fed back from a mobile station with a high degree of accuracy. The base station monitors the feedback information and, upon acquisition of it, transmits to the mobile station a certain kind of feedback information which is judged to contribute to scheduling accuracy improvement while preventing the other kinds of feedback information from being sent to the mobile station.

Provided is a wireless communication device whereby settings for wireless LAN base stations can be made in such a way as to improve the efficiency of frequency utilization throughout the entirety of a wireless communication system that includes different models of wireless LAN base stations from different makers. The wireless communication system makes settings necessary for operation of wireless LAN base stations constituting a wireless communication network, and is provided with: an information collection unit for collecting settings information relating to settings of the wireless LAN base stations and wireless environment information at the wireless LAN base stations; a parameter computation unit for calculating, on the basis of the collected settings information and wireless environment information, parameters to be set for the wireless LAN base stations for which the information was collected; and a parameter setting unit for transmitting the calculated parameters over the network to the wireless LAN base stations for which the information was collected, and making parameter settings.

A transmitting apparatus capable of preventing the error rate characteristic from degrading and of preventing the throughput from degrading due to repetition of retransmittals. In the apparatus, a mapping decision part (103) decides to perform a normal constellation mapping at a first transmission and decides to change the constellation mapping positions or change bit mapping of symbols in accordance with the number of times of retransmittal at a retransmittal. A data interchanging part (105) interchanges the transmitted data for each bit on a symbol-by-symbol basis such that the data are arranged in the bit mapping decided by the mapping decision part (103). A mapper part (106) maps the transmitted data, which are inputted from the data interchanging part (105), onto each symbol such that the data are arranged in the constellation mapping position decided by the mapping decision part (103).

A wireless transmission apparatus wherein peak power can be suppressed without degradation of throughput and that of transmission efficiency in a multicarrier transmission. In the apparatus, an encoding part (11) encodes data to be transmitted. A modifying part (12) modifies the encoded data to produce a symbol. An assigning part (13) assigns the symbol to one of a plurality of subcarriers that will constitute a multicarrier signal. A changing part (15) changes the phases of the plurality of subcarriers within a range that does not exceed a determination boarder line of signal points on the I-Q plane. An IFFT part (16) produces the multicarrier signal by use of a high-speed inverse Fourier transformation.

The invention provides a recording device and a control method of the recording device. The recording device comprises a recording head (18) and a recording head moving part of a bracket driving motor (35) for reciprocating motion of the recording head (18). A CPU (61) is used for control to record media in a moving scope of the recording head (18) and to move the recording head (18) to perform recording at the same time. The CPU (61) makes the recording head (18) cross the edge of the recording media to move to a recoding starting position of a recording medium (100) when at the beginning of recording, the recording head (18) is deviating from the position of the recording medium. Based on a moving starting position, an upper limit of a moving speed of the recording head (18) is changed into a speed lower than a set upper limit speed. Accordingly, faults caused by the stranding of the recording head on the recording media can be avoided and higher recording quality can be kept.

Provided is a wireless communication device capable of setting a wireless LAN base station so that the overall frequency utilization efficiency of a wireless communication system including wireless LAN base stations of different models of different manufacturers can be improved. A wireless communication system that performs settings necessary for operating a wireless LAN base station constituting a wireless communication network includes an information collecting unit that collects setting information set in the wireless LAN base station and a wireless environment in the wireless LAN base station. information; a parameter calculation unit that obtains parameters that should be set for the wireless LAN base station of the collection source based on the collected setting information and wireless environment information; and a parameter setting unit that transmits the required parameters to the wireless LAN base station of the collection source via the network. Get the parameters and set the parameters.

The disclosure provides a method 30 for sector selection performed in a communication system 1 providing wireless communication to a communication device. The communication system 1 is configured for shared cell deployment, the shared cell 9 comprising at least two sectors 2, 3, 4. The communication system (1) is configured for link adaptation of a radio link between the communication device and the shared cell 9. The method 30 comprises: selecting 31, for the communication device 5, a set of sectors 2, 3, 4 for use in downlink transmissions to the communication device 5; determining 32, for the communication device 5, a link adaptation parameter value relating to the link adaptation; adapting 33, for a link adaptation parameter value that is higher than a threshold value, the set of sectors by adding a sector. The disclosure provides corresponding system, computer program and computer program products.

The invention provides a recording device and a control method of the recording device. The recording device comprises a recording head (18) and a recording head moving part of a bracket driving motor (35) for reciprocating motion of the recording head (18). A CPU (61) is used for control to record media in a moving scope of the recording head (18) and to move the recording head (18) to perform recording at the same time. The CPU (61) makes the recording head (18) cross the edge of the recording media to move to a recoding starting position of a recording medium (100) when at the beginning of recording, the recording head (18) is deviating from the position of the recording medium. Based on a moving starting position, an upper limit of a moving speed of the recording head (18) is changed into a speed lower than a set upper limit speed. Accordingly, faults caused by the stranding of the recording head on the recording media can be avoided and higher recording quality can be kept.

The invention provides a vehicle-mounted high-definition map data source selection method and device, the method is combined with a reinforcement learning method to construct an asynchronous data source selection framework, the framework is divided into an offline training part and an online selection part, the offline part is responsible for training a neural network model by using a deep reinforcement learning algorithm, and the online selection part is responsible for training a neural network model by using a deep reinforcement learning algorithm; meanwhile, the online part uses neural network parameters synchronized from the offline part to select data sources, and parallel execution of data source selection, experience track collection and model training is achieved. According to the invention, the problem of reduced throughput in the data source transmission process can be avoided, frequent data source switching is avoided, and the optimal vehicle-mounted high-definition map data source is effectively selected.

Disclosed are a terminal, a base station, a response method, and a retransmission control method, which are capable of switching the response signal transmission method while preventing throughput degradation and without increasing the number of signaling bits. A bundling determination unit (132) of a terminal (100) determines parameters that denote the allocated resource quantities that are allocated thereto from a base station (200), or in other words, a downstream band that is included in a bundling group and a downstream band that is not included in the bundling group, from among a plurality of downstream bands on the basis of base station transmission parameters. Specifically, a degree of resource share (Xn) that is allocated from each respective downstream band to the terminal (100) is employed in the base station transmission parameters.

A communication terminal apparatus can perform an appropriate system operation at the network side and also can avoid a reduction in throughput and a reduction in system efficiency. In this apparatus, a compressed mode calculating part (124) determines, based on compressed information and slot format information, a slot that is a gap in a frame of a compressed mode. A transmission power control part (125) establishes a transmission power obtained by increasing, by Delta Pilot, the transmission power as designated and set by a TPC command for the slots other than the gap in the frame of the compressed mode. A DPCCH transmission power reporting part (127) outputs, to a channel encoding part (128), a report value indicative of the transmission power obtained by removing the effect of Delta Pilot from the transmission power established by the transmission power control part (125).

Provided is a communication device capable of controlling the transmission traffic of data voluntarily according to its own receiving ability while reducing its control processing burden. The communication device comprises a communication unit (35) for receiving the data, an ACK generation unit (45) for generating an ACK packet indicating the contents of a response to a transmission side device (38) for the data received by the communication unit (35) and for transmitting the ACK packet to the transmission side device(38), and a window update notice generation unit (46) for generating, irrespective of the reception result of the data by the communication unit (35), a window update notice packet requesting the transmission side device (38) for the transmission of the data and for transmitting the packet to the transmission side device (38).

Disclosed is a wireless communication system capable of minimizing the hand-off throughput for wireless communication systems. The wireless communication system according to the present invention includes a first communication device for carrying out an inquiry and paging with respect to a wireless communication device located within a communication allowance range, and starting a connection with the wireless communication device; and a second communication device for receiving and transmitting data with the wireless communication device when the wireless communication device connected with the first communication device is cut off by a hard hand-off.