Patents
Literature

588results about How to "Improve transmission efficiency" patented technology

Data packet forwarding method and device for virtual machine network

The invention relates to a data packet transmitting method and a device of virtual machine network, wherein the method comprises analyzing and obtaining source host machine IP address and source virtual machine MAC address and storing to a data base when a physical network card is monitored to be provided with a data packet which is to be transmitted to a local virtual network card, analyzing and obtaining a destination virtual machine MAC address when the virtual network card is detected to be provided with the data packet which is to be transmitted to network, judging whether the destination virtual machine MAC address is broadcasting MAC address or not, if the destination virtual machine MAC address is broadcasting MAC address, calculating and obtaining a multicast IP address as a destination host machine IP address, if not, inquiring in the data base and obtaining IP address as destination host machine IP address, if the address can not be found, then, calculating the multicast IP address as the destination host machine IP address, and setting the destination host machine IP address into the data packet. The device comprises a module for executing the method. The invention adopts a unicast and multicast combined mode to transmit data in virtual machine network, lowers bandwidth load, and improves the transmission efficiency of the data packet.
Owner:BEIHANG UNIV

Simulation data accessing method based on power grid CIM (Common Information Model) interface

The invention provides a power grid CIM (Common Information Model)-based method for accessing real-time data state estimated result of an EMS (Energy Management System) into an interface of a full-digital real-time simulation system. The method comprises the steps of: outputting a power grid model of the EMS and a telemetry information-equipment relation table into a format data file according to a CIM derivation standard, reading the CIM file in by a full-digital real-time simulation system of a power system through a data interface to form a computation database, and directly transmitting the power system simulation data based on the database back to the EMS for detection. The power grid CIM-based method has the advantages of multi-system joint debugging, high data precision and fast transmission speed, provides reliable data basis and unified network model for online safety analysis and prewarning control of a large power grid for the first time, and breaks through the bottleneck that calculation results cannot be compared because the offline calculation and a calculation module are inconsistent; and tests prove that a measurement model which is used for the full-digital real-time simulation system of the power system and constructed on the basis of the CIM derivation standard of the EMS is correct and consistent.
Owner:CHINA ELECTRIC POWER RES INST +1

Configuration method of cyclic prefix, base station and terminal

The invention provides a configuration method of a cyclic prefix (CP), a base station and a terminal, wherein the method comprises the steps of respectively configuring the CP length of each subframe by the base station, dispatching the terminal in need of the first CP length at the subframe which is configured with the first CP length and dispatching the terminal in need of the second CP length at the subframe which is configured with the second CP length according to the transmission requirement of the terminal. The invention provides a method for flexibly configuring the CP length, not allthe uplink or downlink subframes are necessarily configured to extended CP by using the method for the terminal which supports the multipoint cooperation or relay transmission, however the subframe is respectively configured, part of the subframes are configured to extended CP, the terminal which supports the multipoint cooperation or relay transmission is dispatched on the subframe which is configured with the extended CP, and the terminal is dispatched on the subframe which is configured with the conventional CP by using the common transmission mode, thereby improving the transmission efficiency of the system and saving the resources of the system.
Owner:DATANG MOBILE COMM EQUIP CO LTD

A method and device for vehicle to everything (V2X) communications and a transmitting and receiving method and equipment in v2x communication

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present invention provides a method and device for vehicle to everything (V2X) communications. The method comprises: receiving configuration signaling transmitted by an eNB, and then determining, according to the configuration signaling, at least one of a search space corresponding to S-DCI_C, a transmission carrier of S-DCI_C, and the number of bits corresponding to S-DCI_C; or determining, according to the configuration signaling, at least one optional time position information for transmitting a Side Link Synchronization Signal (SLSS) and a Physical Sidelink Broadcast CHannel (PSBCH), and then, based on coverage state about whether a first UE is within cellular network coverage, according to the type of a reference synchronization source, determining time position information from the at least one optional time position information for transmitting the SLSS and the PSBCH, identity information of the SLSS to be transmitted, and the value of the inCoverage field in the PSBCH to be transmitted. The present application also provides a transmitting and receiving method in V2X communication, comprising the steps of: detecting, by a first-type UE, a PSCCH in format of SCI X transmitted by other UEs, and determining, according to the SCI X, whether to further measure PSSCH-RSRP of a PSSCH scheduled by the SCI X and whether to further decode the PSSCH scheduled by the SCI X. The method provided by the present application further comprises the steps of: detecting, by a second-type UE, a PSCCH in format of SCI X transmitted by other UEs, and determining, according to a modulation and coding bit field in the SCI X and a predefined TBS mapping rule, a TBS of a PSSCH scheduled by the SCI X. The method provided by the present application further comprises the step of: determining, by the second-type UE and according to a modulation scheme, the transmitting power of the PSCCH of the SCI X and the transmitting power of the PSSCH scheduled by the SCI X. By the above method, the coexistence of a first-type V2X UE and a second-type V2X UE can be better realized, and the transmission efficiency of the second-type V2X UE can be improved.
Owner:SAMSUNG ELECTRONICS CO LTD

Wireless laser charging equipment for unmanned aerial vehicle and charging system of wireless laser charging equipment

The invention provides wireless laser charging equipment for an unmanned aerial vehicle and a charging system of the wireless laser charging equipment. The charging equipment comprises a wireless laser emitter base station and a solar energy receiver, wherein the wireless laser emitter base station comprises a base, a display screen, a press key, a battery groove cover plate, a rotating motor, a support plate, a support frame, a lateral motor, a movable plate, a laser emitter, positioning equipment, posture measuring equipment, a light beam regulator, a light beam regulator support frame and an observation and aiming device, wherein the solar receiver comprises a solar panel and a fixing frame, and the solar panel is fixedly arranged at the bottom of the unmanned aerial vehicle through a fixing element. The charging system for the wireless laser charging equipment of the unmanned aerial vehicle comprises a laser emitting base station and an unmanned aerial vehicle system, wherein the laser emitting base station and the unmanned aerial vehicle system realize the mutual control through a wireless network. The wireless laser charging equipment and the charging system have the advantages that the unmanned aerial vehicle is charged through laser, the problem of a short endurance time of the unmanned aerial vehicle can be effectively solved, when the wireless laser charging system is used, the unmanned aerial vehicle does not need to land, and only the cruising flight in the effective work range of the laser emitter base station is needed.
Owner:JINLING INST OF TECH

Wireless power ultrasonic diagnostic apparatus

The invention discloses a wireless power ultrasonic diagnostic apparatus, comprising a wireless transmitting unit, a wireless receiving unit and ultrasonic diagnostic equipment, wherein the wireless receiving unit is arranged in the ultrasonic diagnostic apparatus, and no wire is connected between the wireless transmitting unit and the ultrasonic diagnostic apparatus; the wireless transmitting unit comprises a transmitter device for converting drive current into electromagnetic wave to transmit, and the wireless receiving unit comprises a receiver device for receiving electromagnetic wave and converting the electromagnetic wave into induced alternating current via induction coils; and the transmitter device operates under a quasi-resonant state, the resonant frequency of the receiver device and the resonant frequency of the transmitter are the same, and the receiver device and the transmitter device operate under a resonace state. The invention provides a novel power supply mode for the traditional ultrasonic diagnostic apparatus to enable the traditional ultrasonic diagnostic apparatus to have wireless power supply and wireless charging functions, avoid constraint of numerous and complicated cables, and lead the movement and application of the apparatus to be more flexible, convenient and rapid.
Owner:SONOSCAPE MEDICAL CORP

Method, device and system of external communication of 6LoWPAN (internet protocol 6 over low power wireless personal area network) intra-network device and outside

The embodiment of the invention discloses an external communication method, device and system for a 6LoWPAN (internet protocol 6 over low power wireless personal area network) intra-network device and the outside. The method comprises: receiving a data packet sent by the intra-network device, wherein the header of the data packet carries a source address, a destination address and an external forwarding mark, the source address of a link layer header and the source address of an adaptation layer header are addresses of the intra-network device, and the destination address of the link layer header and the destination address of the adaptation layer header are addresses of a gateway device; acquiring the home address of the corresponding external network device; rewriting the destination address of the adaptation layer header of the data packet as the home address of the external network device, and packaging again; and transmitting the data packet after being packaged again to the external network device. The invention is suitable for compressing the header for the data packet when the intra-network device and external network device of the 6LoWPAN network communicate with each other.
Owner:HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products