144results about How to "High data transmission reliability" patented technology

The present invention relates to a method and apparatus for acknowledgement (ACK) transmission in a WLAN. A station receives a plurality of data frames from a plurality of other stations and then transmits an ACK for the plurality of data frames to the plurality of stations. The ACK is a multi-user (MU) block ACK frame which includes a plurality of block ACKs for the plurality of stations. One block ACK includes at least one ACK for at least one data frame that is received from one station.

Method and apparatus for transmitting messages between communication devices via a communication channel allowing at least voice messages to be transmitted, the messages including data subdivided in a sequence of basic data units, the method including; a) encoding the basic data units as unique signals (usj) including a predetermined number of basic signals (bi), each basic signal having a unique fixed frequency (fi); b) transmitting a sequence of unique signals (usj) during a sequence of fixed time periods (t1, t2, t3, . . .); c) receiving and decoding the sequence of unique signals (usj) into the sequence of basic data units; the data being transmitted in superposition over voice.

The selection of the spatial mode together with modulation and encoding schemes based on channel condition measurements requested from MS forms a basis for selecting a best transmission data rate in a wireless link in every channel conditions. A method and network element comprising multiple-input multiple-output (MIMO) capable antenna technology allows the use of a best transmission data rate in the channel if selection of transmission mode has been made correctly. The thresholds for transmission mode selections are pre-determined and compared to instantaneous channel quality information. The practical MIMO solution based on correct selection procedure provides also continuous sufficient channel condition for terminal users when the user moves from LOS situation to NLOS situation.

Embodiments of the present disclosure provide a resource selection or reselection method by a user equipment (UE) and the UE in Vehicle to vehicle / pedestrian / infrastructure / network (V2X) communication. The method comprises the steps of: detecting physical sidelink control channel (PSCCH) transmitted by other UE(s); selecting (a) single-subframe resource(s) from single-subframe resources which do not overlap with single-subframe resources reserved by the detected PSCCH; and transmitting physical sidelink shared channel (PSSCH) on the selected single-subframe resource(s).

The invention relates to a grain cabin capacity information wireless monitoring system, monitoring method and networking method, belonging to the wireless communication and networking technical field. The grain tank capacity information wireless monitoring system of the invention comprises a cabin grain condition data acquisition subsystem based on CAN bus, a cabin grain condition data transmission subsystem based on Zigbee, a cabin grain condition data transmission subsystem based on GPRS and a center server subsystem; wherein the wire data acquisition network based on CAN bus is combined with the wireless data transmission network, thus not only playing the advantages of simple power supply and high reliable data transmission of the wired network, but also playing the advantages of no wiring, low cost and low power consumption of the wireless transmission network; and ZigBee short distance wireless communication is combined with GPRS long distance wireless communication, the advantages can be mutually compensated, and cabin grain condition monitoring in long-distance range is realized. The system can adapt to sensor output signal meeting industrial standard, is compatible with heterogeneous sensor and has strong generality.

The embodiment of the invention provides Ethernet, and a data transmitting method and a device thereof, which are used for the technical field of communication, wherein the data transmitting method of the Ethernet comprises the following steps that: a first transmitting device receives a credit packet from an adjacent second transmitting device, wherein the credit packet carries receiving credit information which is used for indicating the current rest space size of a buffer region of the second transmitting device; the first transmitting device obtains the current rest space size of the buffer region according to the receiving credit information; and the first transmitting device transmits data packets to the second transmitting device, wherein the total size of the transmitted data packets is not greater than the obtained current rest space size of the buffer region. The embodiment of the invention ensures that the receiving buffer of receivers can not generate overflow phenomena, so the occurrence of packet loss is avoided, and the data transmission reliability of the Ethernet is improved.

The invention relates to a method for transmitting compression parameters in a mobile communication system, comprising a mobile node, a first and a second packet switching node. In the method the second packet switching node is informed of the entry of the mobile node to an area controlled by the second packet switching node. At least one compression parameter is received from the first packet switching node to the second packet switching node. The second packet switching node informs at least one of the at least one compression parameter to the mobile node by way of layer-3 parameter renegotiation for a logical link connection. The benefits of the invention are related to improved reliability of packet data transmission to and from a mobile node.

Disclosed is an asynchronous MAC based sensor node using a Wake-Up RF. The sensor node includes a main transceiver to transmit / receive data, a Wake-Up transceiver to transit a state of the sensor node; and a micro-control unit, which transmits a Wake-Up frame to at least one receiving node through the Wake-Up transceiver such that the receiving node is activated from an inactive state into an active state and transmits data to the activated receiving node through the main transceiver. The asynchronous MAC based sensor node reduces unnecessary power consumption, hop-by-hop delay, and overhead required for timing synchronization, thereby implementing an effective sensor

The invention provides a CQI information receiving method, transmitting method, receiving device, and transmitting device. The CQI information receiving method includes sending high-level configuration signaling to a terminal; and receiving the CQI information from the terminal, wherein the CQI information is determined based on a CQI form which is obtained based on the high-level configuration signaling. According to the invention, the problem that the high data transmission reliability, low data transmission rate, and low system spectral efficiency cannot satisfy the coverage of the enhanced MTC terminal in the prior art is solved, and the effects of high data transmission reliability, low data transmission rate, and low system spectral efficiency required by the coverage of the enhanced MTC terminal can be achieved.

The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure discloses a system, a data transmission method and a network equipment supporting a Packet Data Convergence Protocol (PDCP) duplication function. The data transmission method supporting a PDCP duplication function comprises the steps of: transmitting, by a first network equipment, a configuration instruction message of a radio bearer supporting a PDCP duplication function to a second network equipment; and, performing, by the first network equipment and the second network equipment, transmission of a data packet of the radio bearer configured with the PDCP duplication function. In the present disclosure, by an interface between the first network equipment and the second network equipment, the transmission of duplicated data packets between the first network equipment and the second network equipment is realized, and the reliability of data transmission is improved. The present disclosure also discloses a method and device for transferring supplementary uplink carrier configuration information and a method and device for performing a connection mobility adjustment.

The invention discloses a fire automatic alarming system based on LORA wireless communication and a method thereof. The system comprises a master control system, fire detecting equipment, alarm equipment, a firefighting executing device and an LORA wireless communication network. The fire detecting equipment is used for monitoring a fire signal and transmits a fire signal to the master control system. After the master control system receives the fire signal, the master control system transmits an alarm signal to the alarm equipment, and simultaneously the master control system transmits a firefighting control signal to the firefighting executing device. After the alarm equipment receives the alarm signal, the alarm equipment notifies a user of a fire alarm condition in a manner of transmitting a high-strength sound-and-light alarm signal. The firefighting executing device makes field executed firefighting equipment perform fire extinguishing according to the firefighting control signal. According to the fire automatic alarm system and the method thereof, LORA wireless communication technology is utilized, thereby truly realizing an alarming and firefighting linkage function of an existing wired firefighting automatic alarm system, and preventing defects of complicated wiring, many difficulties in manual mounting and complicated maintenance in a wired fire automatic alarm system.

The invention relates to a transmitting device for performing an initial and one or more retransmissions of data via a sidelink interface. A receiver and processor perform a resource sensing procedure to acquire information about radio resources usable for the device to transmit data at a later point in time. The processor performs an autonomous radio resource allocation to select time frequency radio resources within a transmission window to be used for performing a first transmission of the data, based on information acquired by the resource sensing procedure. The processor determines a data transmission timing pattern, that indicates a transmission timing for performing one or more transmissions of data. A transmitter performs the first data transmission using the selected time-frequency radio resources and performs the data retransmissions at the transmission timing defined by the determined data transmission timing pattern with respect to the first data transmission.

A system and method are disclosed for transmitting upstream data from a cable modem within a cable television plant. One aspect of the invention pertains to a method that includes transmitting a first portion of the upstream data on a first upstream channel from the cable modem and transmitting a second portion of the upstream data on a second upstream channel from the cable modem. The second upstream channel differs from the first upstream channel. In another aspect, the invention pertains to a cable modem that includes a processor configured to initiate transmission on multiple upstream channels. The cable modem further includes an upstream transmitting component operating in conjunction with the processor and configurable by the processor to transmit data over multiple upstream channels. In one embodiment, the upstream transmitting component includes a first transmitter that is capable of being configured by the processor to transmit data at both a first upstream channel and a second transmitter that is capable of being configured by the processor to transmit at a second upstream channel that differs from the first upstream channel.

The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure discloses a system, a data transmission method and a network equipment supporting a Packet Data Convergence Protocol (PDCP) duplication function. The data transmission method supporting a PDCP duplication function comprises the steps of: transmitting, by a first network equipment, a configuration instruction message of a radio bearer supporting a PDCP duplication function to a second network equipment; and, performing, by the first network equipment and the second network equipment, transmission of a data packet of the radio bearer configured with the PDCP duplication function. In the present disclosure, by an interface between the first network equipment and the second network equipment, the transmission of duplicated data packets between the first network equipment and the second network equipment is realized, and the reliability of data transmission is improved. The present disclosure also discloses a method and device for transferring supplementary uplink carrier configuration information and a method and device for performing a connection mobility adjustment.

A link adaptation method performed by a station (STA) in a wireless local area network (LAN) system supporting multi-user multiple-input multiple-output (MU-MIMO) is provided. The method includes: receiving a modulation and coding scheme (MCS) request, a steered sounding physical layer convergence procedure (PLOP) protocol data unit (PPDU) which is beam-formed to the STA, and a MIMO indicator including MU-MIMO-related information from an access point (AP); and transmitting feedback information including an MCS acquired from the steered sounding PPDU and the MU-MIMO-related information to the AP in response to the MCS request.

A service providing system comprising a server device, a terminal device, and a service providing device in combination with an optical wireless tag device to achieve transmitting of ID, password, or other service information stored in the service providing device in a non-contact and non-broadcasting manner, thus enabling highly secured and reliable services.

The invention relates to a grain bin reserve online monitoring and early warning system and a grain bin pressure sensing system. The pressure sensing system comprises a plurality of pressure sensors distributed on the bottom of a grain bin at intervals; each pressure sensor is provided with an output cable; and after vertically reaching a side wall of the grain bin, each output cable is connected with an almost-annular wall attached cable by means of an RS485 bus, then penetrates the side wall, and is connected with a data collection and transmission device outside the grain bin. The online monitoring and early warning system comprises a grain bin pressure sensing system, a data collection and transmission device and a data processing system, wherein the data collection and transmission device communicates with each pressure sensor of the grain bin pressure sensing system through an RS485 bus and a customized protocol. Based on the digital output pressure sensors, the online monitoring and early warning system can detect the current weight of a grain reserve inside the grain bin in real time and upload the data to a monitoring center, and nationwide interconnection is realized, so that dynamic supervision and early warning of all grain reserve depots can be realized.

A method, an apparatus, and a system for Coordinated Multi-Point (CoMP) transmission are provided, which can effectively improve the transmission reliability over the control channel and flexibility of the application. The method includes: allocating different resources to a control channel carrying coordination information and a data channel, and performing CoMP transmission over the control channel and the data channel by using the allocated different resources. The technical solutions provided in the present invention are applicable to an Orthogonal Frequency Division Multiplexing (OFDM) system, a Code Division Multiple Access (CDMA) system, a Time Division Multiple Access (TDMA) system, or other mobile communication systems.

Disclosed are various methods for transmitting or receiving data or control information having high reliability conditions. A method for operating a terminal which transmits uplink control information (UCI) includes: a step of generating UCI; a step of comparing the priority of an uplink (UL) control channel for the transmission of the UCI with the priority of a UL data channel when some symbols of the UL control channel and the UL data channel overlap; and a step of selecting the UL channel having a higher priority among the UL control channel and the UL data channel, and transmitting the UCI to a base station through the selected UL channel.

A method for associating time slots with links between network nodes of a wireless interconnected network, the data in the network being transmittable from a source node to a destination node on a time slot basis by association via hops or corresponding hop levels, wherein a main path having one network node per hop level and the corresponding links between the network nodes of adjacent hop levels is set from the source node to the destination node, and alternative network nodes having corresponding alternative links, which can be used in place of the main path for data transmission, are also set.

Disclosed herein are a method for balancing the quality of a wireless communication channel wherein the quality of the wireless communication channel can be more accurately estimated and adjusted on the basis of the combination of observation results of the number of data frames failed to be transmitted in the past and a received signal strength (RSS), and reliability of data transmission over the channel can thus be increased, and a wireless communication apparatus using the same. The method includes collecting information about whether data frames have been successfully transmitted and information about RSSs of the wireless communication channel, acquiring the number of data frames failed to be transmitted and an average RSS in a predetermined observation period using the collected information, comparing the acquired transmission-failed data frame number with a predetermined threshold value and the acquired average RSS with a predetermined reference RSS, respectively, and estimating the quality of the wireless communication channel and quality degradation factors in detail by performing an AND operation with respect to the comparison results. Therefore, it is possible to stably adjust the channel quality.

A battery monitor called a “Voltminder” connects to one or more batteries requiring monitoring via a cigarette lighter cord, or by direct connection to the battery circuit. The battery may be mounted in a motor vehicle, boat, recreation vehicle, or any place requiring the monitoring of the battery voltage. A UHF transceiver transmits the battery voltage, interior temperature, and transmitter ID on a periodic basis to a remote receiver. The transmitter transmits the identity of the particular battery so the distinct battery is know, to distinguish it from other monitored batteries.

An efficient retransmission of data using symbol accumulation wherein the packet received in error is retransmitted at a lower energy-per-bit level concurrently in the same frame with the new packet. The destination device receives the data transmission and retransmission, demodulate the signal, and separates the received data into the new and retransmitted packet. The destination device then accumulates the energy of the retransmitted packet with the energy already accumulated for the packet received in error and decodes the accumulated packet. The accumulation of the additional energy provided by the subsequent retransmissions improves the probability of a correct decoding. The throughput rate can be improved since the packet received in error is retransmitted concurrently with the transmission of the new data packet. The capacity is maximized since the retransmission of the packet received in error is at a lower energy level than that of the new packet.

Data packets (P(1)) to (P(9)) transmitted from a root node include, for example, data blocks (B(101)) each including an error-correction code. If a data packet (P(3)) is received from the root node, and data error of a data block (B(302)), etc. is impossible, a leaf node transmits to the root node a retransmission request for it and block count information (CYCLE5; including a header H making up an independent block) specifying the number of next new transmission data blocks (compression ratio). The root node retransmits requested blocks in a next data packet (P(4)), transmits new blocks (B(401)), (B(402)), and remaining data blocks (B(403)), (B(404)) in a next data packet (P(5)). In this manner, new data is compressed, and the number of retransmissions of data blocks is increased. Thus, data transmission is better ensured while maintaining real time data transmission.

The invention relates to a collaboration wireless display system, which comprises a source device, a target device and collaboration devices; the source device is respectively connected with a plurality of collaboration devices through a wireless transmission network; the collaboration devices are respectively connected with the target device through the wireless transmission network; and the source device is connected with the target device through the wireless transmission network. The source device transmits display data, the collaboration devices are used for receiving the display data of the source device and for forwarding the display data to the target device, and the target device receives the display data and performs the screen display. Due to the adoption of the system and the working method thereof, not only are the link stability of the wireless screen and the data transmission reliability improved, and is the image quality under a complicate wireless communication environment improved, but also a visual effect of the wireless screen can be enhanced.

A method provides for transferring back-up data between on-board electronic modules of a vehicle. The presence of default parameters is sensed at a first electronic module during a running of the vehicle engine for an engine cycle. The current engine cycle accumulation register data is stored for the engine cycle in the first electronic module. A parameter and accumulation register data recovery routine is run wherein parameters and accumulation register data for the first electronic module are recovered from memory in the second electronic module on the vehicle and restored in the memory of the first electronic module. The information is transferred using SAE J1939 protocol. The first electronic module can be an engine control unit and the second electronic module can be a body controller. During a parameter and data back-up routine periodically run, the first electronic module stores current parameters and accumulation register data into memory of the second electronic module that will serve as back-up parameter and accumulation register data storage in the event the first module loses such parameters and accumulation register data.

The invention provides a node communication method of an Ad hoc network. The method comprises: a wireless frame used by inter-node communication comprises a control domain, a data domain, and a feedback domain; a node transmits and receives wireless control information in the control domain, wherein the wireless control information comprises frame structure configuration information used for indicating the time domain structure or the frequency domain structure of the wireless frame or a combination of the time domain structure and the frequency domain structure; the node transmits and receives data via the data domain; and the node receives and transmits feedback information in the feedback domain, wherein the feedback information is constructed by the node according to the state of the data received in the data domain and comprises retransmission feedback indication, a channel quality index, or a combination thereof. The method provided by the invention may greatly improve retransmission efficiency while saving wireless resources, improve data transmission reliability, and reduce interference on adjacent nodes.

The present invention relates to a method and apparatus for acknowledgement (ACK) transmission in a WLAN. A station receives a plurality of data frames from a plurality of other stations and then transmits an ACK for the plurality of data frames to the plurality of stations. The ACK is a multi-user (MU) block ACK frame which includes a plurality of block ACKs for the plurality of stations. One block ACK includes at least one ACK for at least one data frame that is received from one station.