45results about How to "Avoid inefficient transmission" patented technology

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.

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.

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.

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.

The invention provides an authorized spectrum assisted access method, network equipment and terminal equipment. The method comprises the following steps that: after the network equipment determines the need of configuring authorized spectrum assisted access for the terminal equipment to carry out data transmission, the terminal equipment sends a mode query message; the network equipment receives the working mode information sent by the terminal equipment, and the working mode information carries the working mode information of the terminal equipment in a network where an authorized spectrum is at present; and the network equipment configures the authorized spectrum assisted access mode for the terminal equipment under the premise of avoiding conflict. After the network equipment determines the need of configuring an LAA for the terminal equipment, firstly the working condition of the terminal equipment in the authorized spectrum at preset is determined, and then the LSS is configured to eliminate the competition and interference caused by authorized spectrum assisted access transmission and unauthorized spectrum transmission data. When the authorized spectrum is corresponding to WiFi, the problem of low transmission efficiency can be avoided.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The invention provides a data transmission method and system, relates to the technical field of electronic information, and can solve the problem of low data transmission efficiency. According to the specific technical scheme, after a sending device obtains target data and target information, the target data and the target information generate a target data packet, and the target data packet is sent to a receiving device; and the receiving device receives the target data packet, obtains the target information by analyzing the target data packet, and processes the target data according to the target information. The present disclosure is used for data transmission.