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52results about How to "Avoid inefficient transmission" patented technology
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Information processing apparatus and communication apparatus
InactiveUS20060205358A1Avoid inefficient transmissionImprove transmission efficiencyPower managementReceivers monitoringInformation processingSelf adaptive
The present invention relates to an information processing apparatus and a communication apparatus for accurately recognizing at the base station the current receiving quality of the mobile terminals for improving the throughput of the base station. A mobile terminal 61 determines its own receiving quality based on the signal received from the base station 62 for generating the receiving quality message indicating the receiving quality and generates the power control information requesting the transmission power of the base station 62. The receiving quality message is transmitted at a frame rate and power control information is transmitted at the slot rate to the base station 62. Based on both the receiving quality message and power control information, the base station 62 estimates the current receiving quality of the mobile terminal 61 and adaptive modulation and coding is performed based on the estimated value. The present invention may be applied to cellular phones and base stations.
Owner:SONY GRP CORP
Electronic substrate, semiconductor device, and electronic device
InactiveUS20070205855A1Solve the large power consumptionImprove transmission efficiencyTransformersSemiconductor/solid-state device detailsInductorSemiconductor
An electronic substrate includes: a base substrate having an active face and a rear face; inductor elements formed on or above the active face, and formed on or above the rear face; and a conductive member electrically connected to the inductor element formed on or above the rear face, penetrating through the base substrate from the active face to the rear face.
Owner:SEIKO EPSON CORP
Radio base station, relay station and radio communication method
InactiveUS20080108303A1Easy to useSmooth managementFrequency-division multiplex detailsNetwork topologiesRadio Base StationControl unit
A relay station has a reception unit receiving a signal sequence indicating a connection request, from among a predetermined signal sequence group; a control unit generating a ranging request message indicating that a radio terminal newly requesting connection exists; and a transmission unit transmitting the ranging request message to a radio base station.
Owner:FUJITSU LTD
Radio communications system and radio communications control method
InactiveUS20080045143A1Reduce in quantityEfficient radio communication serviceSite diversityFrequency-division multiplex detailsOmnidirectional antennaCommunications system
A radio communications system having a radio base station and a radio relay station is disclosed. A terminal performs radio communications through a link with the radio base station or a link with the radio base station via the radio relay station. The radio base station includes an antenna gain pattern switching part configured to switch between an omnidirectional antenna gain pattern and an adaptive array antenna gain pattern forming a beam; and a control part configured to direct the beam to the terminal in one of an extended service area covered by the adaptive array antenna gain pattern outside a regular service area covered by the omnidirectional antenna gain pattern and the service area of the radio relay station by causing the antenna gain pattern switching part to switch to the adaptive array antenna gain pattern.
Owner:FUJITSU LTD
Information processing apparatus and communication apparatus
InactiveUS20060105719A1Improve transmission efficiencyAvoid inefficient transmissionReceivers monitoringError detection/prevention using signal quality detectorInformation processingCommunication device
The present invention relates to an information processing apparatus and a communication apparatus for accurately recognizing at the base station the current receiving quality of the mobile terminals for improving the throughput of the base station. A mobile terminal 61 determines its own receiving quality based on the signal received from the base station 62 for generating the receiving quality message indicating the receiving quality and generates the power control information requesting the transmission power of the base station 62. The receiving quality message is transmitted at a frame rate and power control information is transmitted at the slot rate to the base station 62. Based on both the receiving quality message and power control information, the base station 62 estimates the current receiving quality of the mobile terminal 61 and adaptive modulation and coding is performed based on the estimated value. The present invention may be applied to cellular phones and base stations.
Owner:SONY CORP
Authorized spectrum assisted access method, network equipment and terminal equipment
InactiveCN105430677AAvoid inefficient transmissionEliminate competitionNetwork planningData transmissionLow transmission
Owner:SHENZHEN GIONEE COMM EQUIP
Information processing apparatus and communication apparatus
InactiveUS20060121856A1Avoid inefficient transmissionImprove transmission efficiencyPower managementReceivers monitoringInformation processingCommunication device
The present invention relates to an information processing apparatus and a communication apparatus for accurately recognizing at the base station the current receiving quality of the mobile terminals for improving the throughput of the base station. A mobile terminal 61 determines its own receiving quality based on the signal received from the base station 62 for generating the receiving quality message indicating the receiving quality and generates the power control information requesting the transmission power of the base station 62. The receiving quality message is transmitted at a frame rate and power control information is transmitted at the slot rate to the base station 62. Based on both the receiving quality message and power control information, the base station 62 estimates the current receiving quality of the mobile terminal 61 and adaptive modulation and coding is performed based on the estimated value. The present invention may be applied to cellular phones and base stations.
Owner:ITOH KATSUTOSHI +1
Apparatus and method for cooperatively transmitting downlink between base station and relay station
InactiveUS20120106433A1Avoid wastingAvoid inefficient transmissionError prevention/detection by using return channelFrequency-division multiplex detailsCommunications systemData collaboration
The present invention relates to an apparatus and method for cooperatively transmitting a downlink between a base station and a relay station. According to one embodiment of the present invention, a method for cooperatively transmitting a downlink signal between a base station and a relay station in a wireless broadband communication system comprises the steps of: receiving cooperative transmission data from the base station and transmitting an acknowledgement message corresponding to the cooperative transmission data to the base station; receiving scheduling information for transmitting the cooperative transmission data by a cooperative transmission scheme; and transmitting the data cooperative transmission data to a terminal in reference to the scheduling information.
Owner:LG ELECTRONICS INC
Radio communications system and antenna pattern switching
InactiveUS8000648B2Avoid inefficient transmissionReduce in quantitySite diversityFrequency-division multiplex detailsOmnidirectional antennaCommunications system
A radio communications system having a radio base station and a radio relay station is disclosed. A terminal performs radio communications through a link with the radio base station or a link with the radio base station via the radio relay station. The radio base station includes an antenna gain pattern switching part configured to switch between an omnidirectional antenna gain pattern and an adaptive array antenna gain pattern forming a beam; and a control part configured to direct the beam to the terminal in one of an extended service area covered by the adaptive array antenna gain pattern outside a regular service area covered by the omnidirectional antenna gain pattern and the service area of the radio relay station by causing the antenna gain pattern switching part to switch to the adaptive array antenna gain pattern.
Owner:FUJITSU LTD
Differential device
InactiveUS20160169360A1Prevent occurrenceAvoid assemblyDifferential gearingsExternal connectionEngineering
To prevent decrease in assembling precision of the differential device and enable avoiding decrease in transmission efficiency even when a tooth portion is formed in an outer peripheral portion of an input member. The differential device includes: a differential case; and a differential mechanism housed in the differential case and distributively transmitting rotational force of the differential case to a pair of mutually-independent output shafts. The differential case includes the input member including an input part which receives the rotational force, an end portion of the input member on at least one side in an axial direction thereof being opened, and at least one cover portion covering the opened end portion of the input member on the one side in the axial direction. The input member includes a fitting hole opened in an outer side surface of the input member, an outer peripheral portion of the cover portion being fitted in the fitting hole, and a support wall portion facing an inner side surface of the cover portion fitted in the fitting hole. The cover portion and the support wall portion are joined together by lap welding from outside of the cover portion, in a position separating inward in a radial direction of the input member from a fitting portion between the fitting hole and the cover portion.
Owner:MUSA PRECISION IND CO LTD
Communication apparatus, communication method, and integrated circuit
ActiveUS20090060061A1Reduce transmission efficiencyPrevent insertionError prevention/detection by using return channelTransmission path divisionFrame basedTransmission channel
A communication apparatus is connected to a transmission channel for transmitting data to another communication apparatus. The communication apparatus includes: a communication frame generator which generates a communication frame for storing the data; and a controller which controls to insert a pilot symbol into the communication frame based on a state of the transmission channel.
Owner:PANASONIC CORP
Data security transmission method for edge gateway of Internet of Things
ActiveCN119277365Aimprove performanceGuarantee stabilitySecurity arrangementSecuring communicationSensing dataSecure transmission
The invention discloses a data security transmission method for an edge gateway of the Internet of Things, particularly relates to the technical field of data transmission, and is used for solving the problem that an encryption mode of existing low-power-consumption equipment is not flexible in data encryption transmission. Sensing data are collected and preprocessed through low-power-consumption equipment; analyzing a multi-dimensional load state of a communication channel through network state tensor decomposition, and evaluating a future load change risk; time distribution of encryption and decryption links is analyzed through a distributed time optimization game, and link delay balance is evaluated; and dynamically adjusting whether to use the lightweight encryption algorithm based on the analysis result. When a lightweight encryption algorithm is selected, the equipment encrypts data to generate preliminarily encrypted data and transmits the preliminarily encrypted data to the edge gateway; and the edge gateway performs high-strength encryption upgrading on the preliminary encryption data to generate deep encryption data and transmits the deep encryption data to the cloud server. According to the invention, the energy consumption of the low-power-consumption equipment is reduced while the data security is ensured, and the reliability of data transmission is improved.
Owner:BEIJING NANTIAN ZHILIAN INFORMATION TECH CO LTD
Radio apparatus
ActiveUS8149930B2Improve Channel Estimation AccuracyAvoid inefficient transmissionMultiplex communicationAmplitude-modulated carrier systemsRadio equipmentData signal
Among destination terminal apparatuses to which a plurality of data signals are to be transmitted, a control unit specifies a terminal apparatus to which a known signal, whose number of streams is greater than the number of streams for a data signal, is to be transmitted. The control unit appends a known signal, whose number of streams is greater than the number of streams for this data signal, to the data signal which is to be transmitted to the specified terminal apparatus. While assigning the data signal, to which the known signal has been appended, to a posterior part of the plurality of data signals, the control unit generates packet signals in a manner that a known signal, whose number of streams corresponds to the number of streams for a data signal in a header portion, is appended to a header portion of the plurality of data signals.
Owner:HERA WIRELESS
Hierarchical encryption method and system based on reinforcement learning
The invention discloses a hierarchical encryption method based on reinforcement learning. The method comprises the following steps: dividing the current to-be-encrypted plaintext into multiple information units; determining encryption level of each information unit and a target encryption method corresponding to the encryption level according to a preset hierarchical encryption decision maker; andencrypting the current to-be-encrypted plaintext according to the target encryption method of each information unit. Through the above method disclosed by the invention, the current to-be-encrypted plaintext is divided into multiple information unit, the information unit is encrypted according to the target encryption method corresponding to the encryption level of each information unit, only theinformation unit is encrypted in the encryption process, and the problem that the transmission efficiency of the key is low since the same encryption way is used for all parts of the plaintext, the encryption key and the to-be-encrypted plaintext length are in positive correlation relation, the length of the key can be changed along the length of the to-be-encrypted plaintext if the to-be-encrypted plaintext is long, and the long key needs to occupy large transmission bandwidth in the transmission process is solved.
Owner:UNIV OF SCI & TECH OF CHINA
Delay determinacy message retransmission method with local cache
ActiveCN103825689AReduce quantity and frequencyImprove packet retransmission efficiencyError prevention/detection by using return channelRadio transmissionSatelliteReal-time computing
The invention provides a delay determinacy message retransmission method with a local cache. A receiving end requests data which needs retransmitted from a sending end unequivocally, and information of more than one lost data section is included in a request. The local cache is arranged, lost messages can be subjected to local retransmission, and accordingly the phenomenon of packet loss of a reverse link ACK can be avoided. The method is a strategy through which loss restoring is carried out quickly with limited bandwidth, on a channel with large delay and error rate and asymmetric link bandwidth, the frequency and the amount of message retransmission are reduced, and the problem of channel efficiency lowering during packet loss caused by reverse channel bandwidth limiting on the channel is avoided. By arranging the local cache, the problem that channel transmission efficiency is low due to large delay when reverse ACK messages are lost can be solved. According to the method, satellite link message retransmission efficiency can be greatly improved, and satellite channel using rate is greatly improved.
Owner:PLA UNIV OF SCI & TECH
Radio apparatus
ActiveUS20070064822A1Improve Channel Estimation AccuracyAvoid inefficient transmissionMultiplex communicationAmplitude-modulated carrier systemsRadio equipmentData signal
Among destination terminal apparatuses to which a plurality of data signals are to be transmitted, a control unit specifies a terminal apparatus to which a known signal, whose number of streams is greater than the number of streams for a data signal, is to be transmitted. The control unit appends a known signal, whose number of streams is greater than the number of streams for this data signal, to the data signal which is to be transmitted to the specified terminal apparatus. While assigning the data signal, to which the known signal has been appended, to a posterior part of the plurality of data signals, the control unit generates packet signals in a manner that a known signal, whose number of streams corresponds to the number of streams for a data signal in a header portion, is appended to a header portion of the plurality of data signals.
Owner:HERA WIRELESS
Radio apparatus
InactiveUS20070064592A1Improve Channel Estimation AccuracyAvoid inefficient transmissionModulated-carrier systemsRadio/inductive link selection arrangementsRadio equipmentData signal
A control unit adjusts the number of streams for each of a plurality of packet signals and specifies a packet signal whose number of streams is the maximum among the packet signals whose number of streams has been adjusted. The control unit assigns a known signal and a data signal to each of streams for the specified packet signal. While setting another stream, the control unit assigns an extensional known signal to the another stream. The control unit also assigns a known signal and a data signal to at least one of streams for the packet signals which have not been specified.
Owner:HERA WIRELESS
Neutral valve structure
InactiveUS20060260302A1Avoid inefficient transmissionLow costFluid couplingsGearing controlLine tubingEngineering
There is provided a neutral valve structure applied to at least one of a pair of operation fluid lines in an HST, including: a valve body slidable in the axis line direction so as to take a closing position where the corresponding operation fluid line is liquid-tightly closed and a releasing position where the corresponding operation fluid line is released to a low-pressure area; and a biasing member for urging the valve body toward the releasing position on one side of the axis line direction. The valve body includes: a closing-side pressure-receiving portion for receiving the hydraulic pressure of the corresponding operation fluid line so as to press the valve body toward the closing position on the other side of the axis line direction against the urging force of the biasing member; and a releasing-side pressure-receiving portion for receiving the hydraulic pressure of the corresponding operation fluid line so as to press the valve body toward the releasing position on one side of the axis line direction along with the biasing member. The closing-side pressure-receiving portion has a receiving pressure area larger than that of the releasing-side pressure-receiving portion.
Owner:KANZAKI KOKYUKOKI MFG
Radio apparatus
InactiveUS20070064591A1Improve Channel Estimation AccuracyAvoid inefficient transmissionModulated-carrier systemsRadio transmissionRadio equipmentTerminal equipment
A control unit assigns a plurality of data signals in a manner that, of the plurality of data signals, data signals of higher data rate are assigned anteriorly. Of terminal apparatuses to which the plurality of data signals are to be transmitted respectively, the control unit specifies a terminal apparatus to which a training signal is to be transmitted. If the data signal to be sent to the specified terminal apparatus is contained in an anterior part of the packet signal, the control unit will append a training signal to a front part preceding a leading data signal. If the data signal to be sent to the specified terminal apparatus is not contained in an anterior part of the packet signal, the control unit will move this data signal to a posterior part of the packet signal and then append a training signal to a front part preceding this moved data signal.
Owner:HERA WIRELESS
Radio transmission system,radio relay system and communication device
InactiveCN1684396AAvoid inefficient transmissionReduced characteristicsRadio transmission for post communicationMulti-frequency code systemsWireless transmissionGuard interval
The invention provides a wireless transmission system capable of preventing the deterioration in the reception characteristics, caused by transmitting the same transmission signal from a plurality of transmitters, and reduction in the transmission efficiency, caused by stopping the transmission a signal from a certain transmitter. In a wireless transmission system, wherein the same transmission signals transmitted from a plurality of transmitters are received by a receiver, each of the transmitters and the receiver comprise a detection means for detecting the start and stop of data transmission from the transmitter, and a guard interval length control means for controlling a guard interval length, based on the result of the detection in the detection means.
Owner:NTT DOCOMO INC
Communication apparatus, communication method, and integrated circuit
ActiveUS8325784B2Avoid inefficient transmissionLow efficiencyError prevention/detection by using return channelTransmission path divisionFrame basedTransmission channel
A communication apparatus is connected to a transmission channel for transmitting data to another communication apparatus. The communication apparatus includes: a communication frame generator which generates a communication frame for storing the data; and a controller which controls to insert a pilot symbol into the communication frame based on a state of the transmission channel.
Owner:PANASONIC CORP
Neutral valve structure
InactiveUS7523610B2Avoid inefficient transmissionLow costFluid couplingsGearing controlLine tubingEngineering
There is provided a neutral valve structure applied to at least one of a pair of operation fluid lines in an HST, including: a valve body slidable in the axis line direction so as to take a closing position where the corresponding operation fluid line is liquid-tightly closed and a releasing position where the corresponding operation fluid line is released to a low-pressure area; and a biasing member for urging the valve body toward the releasing position on one side of the axis line direction. The valve body includes: a closing-side pressure-receiving portion for receiving the hydraulic pressure of the corresponding operation fluid line so as to press the valve body toward the closing position on the other side of the axis line direction against the urging force of the biasing member; and a releasing-side pressure-receiving portion for receiving the hydraulic pressure of the corresponding operation fluid line so as to press the valve body toward the releasing position on one side of the axis line direction along with the biasing member. The closing-side pressure-receiving portion has a receiving pressure area larger than that of the releasing-side pressure-receiving portion.
Owner:KANZAKI KOKYUKOKI MFG
RLC ARQ method for cross-base-station carrier aggregation system, and base station
ActiveCN107566093AAvoid wastingAvoid inefficient transmissionError prevention/detection by using return channelTransmission path multiple useCarrier signalRadio Link Control
The invention discloses an RLC ARQ method for a cross-base-station carrier aggregation system, and a base station, and is used for providing a solution for an RLC ARQ process of the cross-base-stationcarrier aggregation system. The method comprises the steps that a main cell obtains a data transmitting state message sent by an auxiliary cell, wherein the data transmitting state message comprisesa serial number of a data PDU (protocol data unit), which has completed the initial transmission, on an RB (radio bearer) which carries out the cross-base-station carrier aggregation on UE, and the RBis located on an RLC (radio link control) entity of the auxiliary cell, and the main cell and the auxiliary cell belongs to different base stations covering the UE at the same time; The main cell determines the serial number of the data PDU which needs to start an ARQ (automatic retransmission request) process on the RB according to the data transmitting state message, and starts the ARQ processfor the data PDU which needs to start the ARQ process on the RB.
Owner:DATANG MOBILE COMM EQUIP CO LTD
Radio apparatus
InactiveUS7778150B2Improve Channel Estimation AccuracyAvoid inefficient transmissionModulated-carrier systemsTransmission control/equalisingRadio equipmentData signal
A control unit adjusts the number of streams for each of a plurality of packet signals and specifies a packet signal whose number of streams is the maximum among the packet signals whose number of streams has been adjusted. The control unit assigns a known signal and a data signal to each of streams for the specified packet signal. While setting another stream, the control unit assigns an extensional known signal to the another stream. The control unit also assigns a known signal and a data signal to at least one of streams for the packet signals which have not been specified.
Owner:HERA WIRELESS
Apparatus and method for cooperatively transmitting downlink between base station and relay station
InactiveUS8619663B2Avoid wastingAvoid inefficient transmissionError prevention/detection by using return channelFrequency-division multiplex detailsCommunications systemBroadband
The present invention relates to an apparatus and method for cooperatively transmitting a downlink between a base station and a relay station. According to one embodiment of the present invention, a method for cooperatively transmitting a downlink signal between a base station and a relay station in a wireless broadband communication system comprises the steps of: receiving cooperative transmission data from the base station and transmitting an acknowledgement message corresponding to the cooperative transmission data to the base station; receiving scheduling information for transmitting the cooperative transmission data by a cooperative transmission scheme; and transmitting the data cooperative transmission data to a terminal in reference to the scheduling information.
Owner:LG ELECTRONICS INC
Synchronized code division multiplexing communication method and synchronized code division multiplexing communication system
InactiveUS8260134B2Avoid inefficient transmissionMultiplex system selection arrangementsStar/tree networksMultiplexingCommunications system
A synchronized CDM communication system performs 1-to-N communication by CDM between a central office and first to N-th optical network units (ONU). The synchronized CDM communication system adds structural elements for realizing a connection state acquisition section to a conventional synchronized CDM communication system. A central office includes a presence check section, a ranging processing section and the connection state acquisition section. The presence check section checks the ONUs that are connected with the central office and the ONUs that are not connected. The ranging processing section performs transmission timing adjustments for the ONUs that are connected. The connection state acquisition section verifies whether all of ONUs are connected with the central office, and performs a discovery of a ONU, among the ONUs that were not connected at the time of the check, that has resumed participation in communication since the check ended.
Owner:OKI ELECTRIC IND CO LTD
Transmitter circuit, interface circuit, information terminal, interface method and recording medium
InactiveCN103493425AAvoid inefficient transmissionReduce power consumptionSynchronisation arrangementTime-division multiplexSerial transferDiscriminator
A signal received by an antenna (60) is input to an encoder unit (201) and also to a discriminator unit (203). The discriminator unit (203) measures the length of a non-communication interval, and, if the length of the non-communication interval is equal to or greater than that of a predetermined interval, then outputs flag setting information. The encoder unit (201) performs a discrimination of sync pattern length on the basis of the flag setting information. The encoder unit (201) refers to the flag at the generation of a serial transmission frame and, if the flag has not been set, then sets the sync pattern length to a first value and, if the flag has been set, then sets the sync pattern length to a second value greater than the first value. The encoder unit (201) generates a serial transmission frame to which a sync pattern having the set sync pattern length has been added. A line driver unit (202) outputs the serial transmission frame generated.
Owner:NEC CASIO MOBILE COMM LTD +1
Packet loss retransmission method and system
InactiveCN110768753AAvoid inefficient transmissionImprove data transfer efficiencyError prevention/detection by using return channelPacket lossReal-time Transport Protocol
The invention discloses a packet loss retransmission method and system. The method comprises the steps that receiving end equipment sends a packet loss retransmission request to sending end equipment;the sending end equipment sends a corresponding real-time transport protocol (RTP) retransmission packet to the receiving end equipment through an RTP control protocol (RTCP) channel according to thepacket loss retransmission request; and when the receiving end equipment receives a data packet on the RTCP channel and judges that the data packet is an RTP retransmission packet, the data packet isput into a corresponding framing queue. According to the invention, the data transmission efficiency and quality can be improved.
Owner:CHENGDU TD TECH LTD
Data transmission method, system and device in multi-hop link
ActiveCN103378926AImprove reliabilityAvoid inefficient transmissionError preventionNetwork topologiesComplete dataThrough transmission
The invention discloses a data transmission method, system and device in a multi-hop link. The method includes the steps that stations in the multi-hop link acquire transmission permission according to set permission transmitting rules; when each station determines that the next binary-hop station has completed data transmission, the station transmits data frames to be sent to the next hop station. Data transmission is controlled through transmission permission transmitting, so that the problem of being low in data transmission efficiency caused by channel competition among the stations is avoided, and overall performance of a network is promoted.
Owner:BEIJING NUFRONT MOBILE MULTIMEDIA TECH
Neutral Valve Structure
InactiveUS20090178400A1Avoid inefficient transmissionLow costFluid couplingsGearing controlLine tubingLow-pressure area
There is provided a neutral valve structure applied to at least one of a pair of operation fluid lines in an HST, including: a valve body slidable in the axis line direction so as to take a closing position where the corresponding operation fluid line is liquid-tightly closed and a releasing position where the corresponding operation fluid line is released to a low-pressure area; and a biasing member for urging the valve body toward the releasing position on one side of the axis line direction. The valve body includes: a closing-side pressure-receiving portion for receiving the hydraulic pressure of the corresponding operation fluid line so as to press the valve body toward the closing position on the other side of the axis line direction against the urging force of the biasing member; and a releasing-side pressure-receiving portion for receiving the hydraulic pressure of the corresponding operation fluid line so as to press the valve body toward the releasing position on one side of the axis line direction along with the biasing member. The closing-side pressure-receiving portion has a receiving pressure area larger than that of the releasing-side pressure-receiving portion.
Owner:SAKIKAWA SHIGENORI