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588results about How to "Flexible allocation" patented technology

FPGA (Field Programmable Gate Array)-based on-orbit reconfiguration system and method for satellite on-board computer

The invention discloses an FPGA (Field Programmable Gate Array)-based on-orbit reconfiguration system for a satellite on-board computer. The FPGA-based on-orbit reconfiguration system comprises an on-board FPGA chip, a control FPGA chip and an SPI (Serial Peripheral Interface) flash memory unit, wherein the on-board FPGA chip is internally integrated with CPU cores; the control FPGA chip is used for receiving configuration files, which are uploaded by a communication module of a satellite, for on-orbit reconfiguration, unloading the configuration files in the SPI flash memory unit, and controlling the on-orbit reconfiguration of the on-board FPGA chip; the SPI flash memory unit is used for storing the configuration files required for on-orbit reconfiguration; in the process of realizing on-orbit reconfiguration by means of running a JTAG (Joint Test Action Group) configuration mode, the control FPGA chip reads the configuration files required for the JTAG configuration mode from the SPI flash memory unit, and sends the configuration data to the on-board FPGA chip; in the process of realizing on-orbit reconfiguration by means of running an SPI configuration mode, the control FPGA chip informs the on-board FPGA chip of starting the SPI configuration mode, and the on-board FPGA chip reads the configuration files required for the SPI configuration mode from the SPI flash memory unit.
Owner:SHANGHAI ENG CENT FOR MICROSATELLITES

Device and method for dynamically confirming CFI (Control Format Indication)

The invention discloses a device and a method for dynamically confirming a CFI (Control Format Indication). The device comprises a cell parameter configuration unit, a PHICH (Physical Hybrid Indication Channel) calculation unit, a scheduling calculation unit, a CFI calculation unit and a CFI mapping unit. The method comprises the following steps of: acquiring cell configuration parameters; calculating a PHICH parameter of the cell according to the cell configuration parameters; calculating and acquiring a total CCE (Command Control Equipment) resource bit needed by the empty subframe according to the numbers of information to be scheduled and UE (User Equipment) to be scheduled in the empty subframe when the number of the information to be scheduled is changed in an empty subframe of the cell; and calculating a total REG (Registered) number needed by the empty subframe and calculating the CFI value of the empty subframe of the cell according to the total REG number needed by the emptysubframe. The invention dynamically confirms the CFI value and improves the resource utilization ratios of downlink PDCCH (Physical Downlink Control Channel) and PDSCH (Physical Downlink Shared Channel) resources.
Owner:GLOBAL INNOVATION AGGREGATORS LLC

Time division duplex transmission method for broadband wireless communication system

The invention relates to a time division duplex transmission method for a broadband wireless communication system, belonging to the technical field of digital information transmission. The method comprises the following steps: using a time / frequency-domain unified orthogonal frequency division multiple access (TFU-OFDMA) technology to carry out downlink multiple access so as to obtain downlink signals at a transmitting end of a base station; using a time / frequency-domain unified single carrier multiple access (TFU-SCMA) technology to carry out uplink multiple access so as to obtain uplink signals at a transmitting end of user equipment; and using a time division duplex frame structure to carry out duplex transmission on the downlink signals and the uplink signals. The TFU-OFDMA technology provided by the invention solves the multiple access problems in the TFU-OFDM (Time / Frequency-domain Unified Orthogonal Frequency Division Multiplexing) modulation process, can flexibly allocate wireless resources and can effectively overcome deep fade, narrow-band interference and the like. The TFU-SCMA technology provided by the invention solves the multiple access problems in the improved SC-FDE (Single Carrier Frequency Domain Equalization) modulation process, reserves the advantages of low complexity of the transmitting end in the SC-FDE technology, low peak-to-average power ratio and the like, and enables the receiving end to be subject to synchronization and channel estimation better.
Owner:TSINGHUA UNIV

Entire vehicle energy distribution method, system and electric vehicle

The invention discloses a whole vehicle energy distribution method, a system and an electric vehicle, comprising: setting energy use priority from high to low, sequentially including safety requirement, driving requirement and comfort requirement; Detecting an entire vehicle mode, wherein when the entire vehicle mode is a mileage mode, the required power for controlling the comfort requirement isless than a first preset value, wherein the entire vehicle mode comprises a mileage mode and a normal mode; obtaining The maximum discharge power of the power battery, and the allowable power of eachenergy use priority according to the maximum discharge power; Controlling the subsystem in the whole vehicle system to work according to the permissible power. Adding A mileage mode in the whole vehicle mode, According to the whole vehicle mode, the energy distribution scheme of the whole vehicle is made. In the low temperature limit environment, if the driver pursues the long mileage, the required power of the comfort demand is limited, which not only saves the electric energy of the power battery, but also can more flexibly carry out the energy distribution according to the driver's demand,and improve the driver's driving experience.
Owner:重庆长安新能源汽车科技有限公司

Uplink control information feedback and receiving method, base station and relay station

The invention discloses an uplink control information feedback and receiving method, a base station and a relay station, which can maintain the orthogonality of a PUCCH (Physical Uplink Control Channel) of the relay station and a PUCCH of UE (user equipment) while realizing the flexible PUCCH resource distribution of the relay station. The uplink control information feedback method comprises the following steps of: receiving PUCCH format 2/2a/2b channel resources distributed by the base station; and feeding back uplink control information on the PUCCH format 2/2a/2b channel resources, wherein the uplink control information comprises answering information and/or SRI information. The method for receiving the uplink control information comprises the following steps of: assigning the PUCCH format 2/2a/2b channel resources to the relay station, and receiving the uplink control information fed back by the relay station on the PUCCH format 2/2a/2b channel resources, wherein the uplink control information comprises answering information and/or SRI information. The embodiment of the invention can maintain the orthogonality of the PUCCH of the relay station and the PUCCH of the UE while realizing the flexible PUCCH resource distribution of the relay station.
Owner:HUAWEI TECH CO LTD

Intelligent distribution double-frequency wireless access device and method and network device

The invention discloses an intelligent distribution double-frequency wireless access device and a method and a network device which are applied to room distribution wireless local area network. The intelligent distribution double-frequency wireless access device is characterized in that a control module is used for determining a radio-frequency signal which accesses to present station (STA), the radio-frequency signal is a first radio-frequency signal or a second radio-frequency signal, a double-frequency radio-frequency module is determined to be distributed to access to the present STA, the determined double-frequency radio-frequency module is in operation in a mode of the radio-frequency signal determined by the control module, a distribution module distributes the first radio-frequency signal or the second radio-frequency signal derived from the double-frequency radio-frequency module to at least one first sub-radio-frequency signal or at least one second sub-radio-frequency signal, a sending module sends the first sub-radio-frequency signal or one way of the second sub-radio-frequency signal to an antenna, the radio-frequency signal which accesses to the present STA and the double-frequency radio-frequency module which is to access to the present STA can be initiatively and flexibly determined, thereby resources in the double-frequency access device can be fully utilized, and the problem of low resource utilization ratio of a double-frequency access point (AP) in prior art is solved.
Owner:RUIJIE NETWORKS CO LTD

Data encryption and decryption method and device

The invention discloses a data encryption method and device and a data decryption method and device, and aims to solve the problems that a static secret key and an encryption algorithm in an existingdata encryption method are single, fixed for a long time and easy to crack. The method comprises the following steps: enabling a server to receive a secret key and algorithm allocation request sent bya first terminal, wherein the secret key and algorithm allocation request comprises a needed secret key level and an algorithm category; selecting a secret key, an encryption algorithm and a corresponding decryption algorithm from the established secret key database and algorithm database according to the required secret key level and algorithm category; sending the secret key identifier and thealgorithm identifier to the first terminal; receiving a data encryption request sent by a second terminal, wherein the data encryption request carries a secret key identifier and an algorithm identifier sent to the second terminal by the first terminal; extracting a secret key corresponding to the secret key identifier and an encryption algorithm corresponding to the algorithm identifier from thesecret key database and the algorithm database respectively; and enabling the second terminal to encrypt the data requested by the first terminal by using the secret key and the encryption algorithm.
Owner:CHINA MOBILE GROUP JILIN BRANCH +1

Broadband asynchronous adjustable multi-carrier wireless transmission method and system supporting multi-antenna transmission

ActiveCN105306118ALarge transmission bandwidthData transfer without synchronizationSpatial transmit diversityMulti-frequency code systemsTransport systemCarrier signal
The invention discloses a broadband asynchronous adjustable multi-carrier wireless transmission method supporting a multi-antenna transmission. The method comprises a signal transmission step and a signal receiving step. The invention also discloses a broadband asynchronous adjustable multi-carrier wireless transmission system supporting the multi-antenna transmission. The system comprises a transmission end and a receiving end, wherein the transmission end comprises a sub-band baseband transmission module, a multi-carrier synthesis module, a D/A module, a transmission radio-frequency module and a reflecting antenna; and the receiving end comprises a receiving antenna, a reception radio-frequency module, an A/D module, a multi-carrier analysis module and a sub-band baseband receiving module. Through adoption of the method and the system, spectrum allocation is performed flexibly under a larger bandwidth on the basis of keeping the advantages of OFDM (Orthogonal Frequency Division Multiplexing); asynchronous transmission is realized; the spectrum utilization ratio is increased; the peak-to-average ratio is lowered; frequency offsets are effectively resisted; carrier side lobes are reduced; and radio resources are saved.
Owner:SOUTHEAST UNIV
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