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40results about How to "Increase multiplexing capacity" patented technology

Resource allocation method and resource allocation system for uplink demodulation reference signals (DMRSs)

The invention discloses a resource allocation method and a resource allocation system for uplink demodulation reference signals (DMRSs). The method comprises the following steps: a base station allocates N resources or N parameter sets which are used for sending the uplink DMRSs for a user terminal through high-level signaling, and indicates that one of the N resources or one of the N parameter sets is used for the user terminal to send the uplink DMRSs through K bits in downlink control information; and the user terminal sends the uplink DMRSs by using a source or a parameter set indicated by the K bits, wherein both N and K are positive integers. The scheme saves the consumption of singling and dynamically allocates the resources or the parameter sets for the DMRSs for UE (User Equipment) among cells, so that the orthogonality of the DMRSs of the UE among different cells can be realized, the scheduling restrictions are overcome, the multiplexing capacity of the DMRSs is strengthened, and the problems in related technologies that the orthogonality of the DMRSs of the UE among the different cells cannot be realized, the scheduling restrictions exist, the multiplexing capacity of the DMRSs is insufficient are solved, thereby improving the transmission performance of a system.
Owner:ZTE CORP

Method and system for sending SRS (survey reference signal)

The invention discloses a method and a system for sending an SRS (survey reference signal); the method comprises the following steps: user equipment (UE) transmits the SRS to a base station on a time domain resource, a frequency domain resource and / or a code domain resource, wherein the time domain resource comprises the last time domain sign, the first time domain sign or the last but one time domain sign of a sub-frame of an SRS cycle; the frequency domain resource comprises a frequency domain location of the SRS or a sending frequency comb of the SRS, the code domain resource is obtained by the following method: a sequence group number of the SRS is generated by the UE according to a parameter which is configured for the UE by the base station through a high level signaling and is proprietary by users, and the code domain resource which is needed for sending the SRS is determined according to the generated sequence group number of the SRS. The available resource of the SRS is increased, the user multiplexing capacity of the SRS is improved, and the channel estimation quality of the base station to the SRS is improved, therefore, the application of the coordinated multi-point transmission technology to the system is supported effectively.
Owner:ZTE CORP

Method and system for sending measuring reference signal

The invention provides a method and a system for sending a measuring reference signal. The method comprises the following steps: issuing configuration information sending a survey reference signal (SRS) to a user by a base station, wherein the configuration information comprises precoding enabling indication information used for indicting whether the SRS is precoded or not; receiving configuration information by a user terminal; when the precoding enabling indication information indicates and enables, precoding the SRS to be sent and sending a precoded SRS to the base station by the user terminal; and when the precoding enabling indication information does not indicate and enable, sending the SRS which is not precoded to the base station. According to the technical means provided by the invention, the technical problems of insufficient user multiplexing capacity of the SRS in the relevant technology is solved so as to save SRS resource and effectively improve the SRS resource use rate, thereby improving the user multiplexing capacity of the SRS.
Owner:ZTE CORP

Micro-structure fiber optic Fabry-Perot cavity quasi based quasi-distributed sensor

The invention relates to a micro-structure fiber optic Fabry-Perot cavity quasi based quasi-distributed sensor, which comprises a broadband light source (1), a fiber optic circular (2), a plurality of sensor units (3), a sensor-based optical fiber (4), an optical spectrum analyzer (5) and a data processor (6), wherein each sensor unit (3) is a micro-structure fiber optic Fabry-Perot cavity, and the sensor units are connected in series and are integrated on the sensor-based optical fiber (4); and three ports of the fiber optic ring device (2) are respectively connected with the broadband light source (1), the sensor-based optical fiber (4) integrating all sensor units, and the optical spectrum analyzer (5), and the optical spectrum analyzer (5) is connected with the data processor (6). The micro-structure fiber optic Fabry-Perot cavity quasi based quasi-distributed sensor has the advantages of large sensing capacity, simple structure, low cost, wide application prospect and the like.
Owner:HUAZHONG UNIV OF SCI & TECH

Method and device for interference processing and signal notification among nonorthogonal user equipment

The invention discloses a method and device for interference processing and signal notification among nonorthogonal user equipment, and the signal notification method comprises the steps: notifying target user equipment of at least one piece of the following information for interference removing: paired user equipment information of the target user equipment, data transmission related configuration parameter information of the paired user equipment, and demodulation pilot frequency related configuration parameter information related with the data transmission of the paired user equipment. The same time frequency resources or partly identical time frequency resources and different transmission powers are configured for the data transmission of the target user equipment and the data transmission of the paired user equipment. Moreover, nonorthogonal demodulation pilot frequency resources are configured for the demodulation pilot frequency related with the data transmission of the paired user equipment and the demodulation pilot frequency related with the data transmission of the target user equipment.
Owner:ZTE CORP

Transmission method and system for physical downlink shared channel

The invention discloses a transmission method for a physical downlink shared channel (PDSCH). The transmission method comprises the following steps: a network side determines the transmission parameter of the PDSCH according to a DM-RS related transmission mode and / or scheduled UE related information, and the transmission parameter of the PDSCH comprises one or more of the following parameters: a resource mapping way of the PDSCH, used downlink DM-RS antenna ports, scrambling sequence identity (SCID) needed by the downlink DM-RS ports during initialization and a scrambling code initialization value X; the network side sends data according to the determined transmission parameter of the PDSCH. The invention further and correspondingly discloses a transmission system for the PDSCH. According to the method and the system, the DM-RS antenna port selection can be realized; multiple DM-RS antenna ports are used, so that the reliability of transmission is improved, interference is eliminated, the multiplexing capacity of MU-MIMO is increased, and the frequency-selective grain is increased.
Owner:ADVANCED STANDARD COMM LLC

Sounding reference signal transmission method, network side equipment and user equipment

The invention provides a sounding reference signal transmission method, network side equipment and user equipment, and belongs to the field of communication. The sounding reference signal transmission method used for the network side equipment comprises the steps that parameter configuration information of the user equipment UE used for transmitting SRS is determined; and the determined parameter configuration information is indicated to the UE so that the UE is enabled to use the unused DMRS resources to transmit the SRS according to the parameter configuration information. According to the technical scheme, the influence on the DMRS can be reduced as much as possible when the unused DMRS are reused for SRS transmission so that the multiplexing capacity can be enhanced and the great orthogonal performance can be maintained.
Owner:CHINA MOBILE COMM GRP CO LTD

Method and device for uplink information transmitting

ActiveCN103312438ARealize sendingSolve the problem of relatively small multiplexing capacityError preventionMulti-frequency code systemsTime domainMultiplexing
The invention discloses a method and a device for uplink information transmitting. The method comprises the steps that uplink information is mapped to a pre-set time frequency resource, wherein the pre-set time frequency resource comprises N frequency domain PRB and X time domain orthogonal frequency division multiplexing OFDM symbol; by using a first extension sequence, the time domain resource occupied by the mapped uplink information is extended to M sub frame from X OFDM symbol, wherein N, X and M are positive integers; and the uplink information after extension processing is transmitted. According to the invention, the transmitting uplink multiplexing capacity and the uplink coverage are improved.
Owner:ZTE CORP

Distributed sensor optical fiber as well as preparation device and method thereof

The invention discloses a distributed sensor fiber as well as a preparation device and method thereof. The distributed sensor optical fiber comprises an outer layer which is an ultraviolet transparent coating layer (1) and an inner layer which is an optical fiber core, wherein a plurality of weak Bragg reflection period structures (2) which have identical physical structures and identical optical properties are continuously distributed on the optical fiber core at an interval of a section of delay optical fiber (4). When the optical fiber provided by the invention is used as a distributed sensing detection carrier, the sensing measurement range can be efficiently widened, and the sensing distance and concentration can be increased.
Owner:武汉光谷光联网科技有限公司

Distributed optic fiber sensor based on multi-domain mixed and multiplex mode and modulation and demodulation method thereof

The invention relates to a distributed optic fiber sensor based on a multi-domain mixed and multiplex mode and a modulation and demodulation method of the distributed optic fiber sensor. The optic fiber sensor comprises a data processing and controlling device (1), a light source module, an optical fiber sensing unit (13), a filter (4), a filter controlling module, a data collecting module and a light circulator (9). The data processing and controlling device (1) is respectively connected with the light source module, the filter controlling module and the data collecting module, the light circulator (9) is respectively connected with the light source module, the optical fiber sensing unit (13) and the filter (4), the filter controlling module is connected between the data processing and controlling device (1) and the filter (4), and the output end of the filter (4) is further connected with the input end of the data processing and controlling device (1) through the data collecting module. The distributed optic fiber sensor based on the multi-domain mixed and multiplex mode has the advantages of being large in capacity, low in cost, high in modulation and demodulation speed, compact in structure and the like and is suitable for large-scale and distributed sensing multiplexing.
Owner:HUAZHONG UNIV OF SCI & TECH

Double-core FBG (fiber bragg grating) array sensing network and distributed sensing information obtaining method

ActiveCN105698831AReduce the spectral width of the light sourceReduce lossConverting sensor output opticallyGratingControl signal
The invention discloses a double-core FBG (fiber bragg grating) array sensing network. The output end of a scanning laser is connected with a semiconductor amplifier, and the output end of the semiconductor amplifier is connected with an optical circulator. An optical connector is connected with the optical circulator, and the optical circulator is connected a first FBG array and a second FBG array in a double-core FBG array. The optical circulator is connected with the input end of a photoelectric detector, and the output end of the photoelectric detector is connected with a grid wavelength detection electric signal input end of a demodulator. A semiconductor light amplification drive signal output end of a pulse function generator is connected with a drive signal input end of the photoelectric detector. A demodulation control signal output end of the pulse function generator is connected with the demodulation control signal input end of the demodulator. A pulse function generator drive signal output end of the demodulator is connected with a drive signal input end of the pulse function generator. The network is high in stability, is low in loss, and has no temperature interference.
Owner:WUHAN UNIV OF TECH

Apparatus and method for transmitting uplink data

Disclosed herein relates to a method of transmitting uplink data to increase multiplex capacity. The method includes allocating, by each of a plurality of machine type communication user equipment (MTC UE), position information within a single resource block (RB), which is used when transmitting uplink data, to the single RB, generating information about a demodulation reference signal (DMRS) used when demodulating the data received from the plurality of MTC UE, and transmitting the position information within the RB and the information about the DMRS to each of the plurality of MTC UE.
Owner:LG ELECTRONICS INC +2

System and method for spread spectrum communication

A spreading code generating apparatus (10) carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out inverse Fourier transform of the channel identification codes to generate spreading codes (121) and inverse spreading codes (131). A transmitting apparatus (20) and a receiving apparatus (30) store the spreading codes (121) and the inverse spreading codes (131) generated by the spreading code generating apparatus (10), respectively, and use a single code respectively selected from the stored codes to carry out spread spectrum communication. With the use of the spreading codes for spreading, the input signal is spread over a wide frequency band with uniform power on the frequency axis. Thus, transmission characteristics are improved, and multiplexing capacity is increased.
Owner:INTERDIGITAL PATENT HLDG INC

SRS transmission method, device and system, storage medium and electronic device

The invention provides an SRS transmission method, device and system, a storage medium and an electronic device, and the method comprises the steps: receiving configuration information transmitted bya first communication node through signaling, and transmitting a sounding reference signal SRS to the first communication node based on the configuration information; or, according to a rule agreed with the first communication node, sending the SRS to the first communication node. Through application of the method and the device, the problems of the small coverage area and multiplexing capacity ofthe SRS and interference to the adjacent cell in the prior art are solved, and the effects of enhancing the coverage area and the multiplexing capacity of the SRS and reducing the interference to theadjacent cell are achieved.
Owner:ZTE CORP

Fiber Bragg grating sensing device

The invention provides a fiber Bragg grating sensing device. A resonant cavity of the fiber Bragg grating sensing device consists of different sensors and a reflection-type semiconductor optical amplifier driven by pulse signals with different frequencies, so that different sensor signals can be read. The problem that the quantity of sensors in the traditional fiber Bragg grating wavelength division multiplexing technology is limited by the bandwidth of a light source is solved by a time division sensor access mode. Owing to a resonant cavity technology, sensing signals can be amplified in the cavity, so that the problem of low signal-to-noise ratio of sensing signals in the traditional time division multiplexing technology is solved. Time division multiplexing and wavelength division multiplexing are combined in a mixed multiplexing technology, so that the sensors are grouped, sensor groups are accessed in a parallel-serial matched mode, and sensor multiplexing capacity a system is greatly improved.
Owner:CHENGDU FORWARD TECH

Signalling configuration method and apparatus

The invention provides a signalling configuration method and apparatus. The method comprises: a base station notifies user equipment of the first special subframe configuration and the second special subframe configuration through a first signalling and a second signalling, wherein the base station and the user equipment determine the first special subframe configuration according to the first signalling, and determine the second special subframe configuration according to the first signalling and the second signalling, or determine the second special subframe configuration according to the second signalling. The signalling configuration method and apparatus solve the problem of low multiplexing capacity of a SRS, and improves the multiplexing capacity of the SRS.
Owner:ZTE CORP

Battery temperature monitoring and alarming system for electric automobile and using method thereof

The invention discloses a battery temperature monitoring and alarming system for an electric automobile. The battery temperature monitoring and alarming system comprises a light source, a first coupler, a same-wavelength fiber grating sensor array, a dense wavelength division multiplexer, a photoelectric detector, a monitoring and alarming circuit, a second coupler and a narrow-band filter. According to the technical scheme, the relative variation and absolute value of the working temperature of the battery can be monitored at the same time, and the purpose of alarming is achieved; and high-density point temperature health monitoring of the battery pack is realized, the complexity of a temperature measurement system is reduced, the cost is reduced, and commercialization is facilitated.
Owner:BEIHANG UNIV

A preparation method of an optical fiber pressure measuring catheter for digestive tract detection

The invention discloses an optical-fiber piezometric catheter for detecting a digestive tract as well as a preparation method and application. The optical-fiber piezometric catheter mainly comprises a sensing optical fiber, a protective sleeve, a polymer encapsulating layer and a medical catheter, wherein the sensing optical fiber contains a sensing area and a non-sensing area; the polymer encapsulating layer encapsulates the sensing area of the sensing optical fiber; the protective sleeve encapsulates the non-sensing area of the sensing optical fiber; the medical catheter encapsulates the part, needing to enter a human body and encapsulated by the polymer encapsulating layer and the protective layer, of the sensing optical fiber. Micro-structural sensing units which are arranged repeatedly are engraved in the sensing area of the sensing optical fiber. The micro-structural sensing units contain the information of spectral central reflection wavelengths and repetition frequency information, realizes wavelength-division and frequency-division dual coding, improves multiplexing capacity, and realizes detecting the pressure of different positions of the digestive tract through a wavelength-division and frequency-division dual coding demodulation technique. The optical-fiber piezometric catheter for detecting the digestive tract has the advantages of long measurement length, high resolution and sensitivity, low manufacturing cost and better comfort.
Owner:HUAZHONG UNIV OF SCI & TECH

Method and equipment for transmitting uplink control information

The embodiment of the invention discloses a method and equipment for transmitting uplink control information. The method comprises the following steps: acquiring multiple first phase rotation coefficients and the first orthogonal code at a terminal equipment side; acquiring multiple second phase rotation coefficients and the second orthogonal code; generating a first group of OFDM symbols carryingthe uplink control information based on multiple first phase rotation coefficients and the first orthogonal code; generating a second group of OFDM symbols carrying the reference information based onmultiple second phase rotation coefficients and the second orthogonal code; and sending the first group of OFDM symbols and the second group of OFDM symbols in the same time slot. The embodiment of the invention further provides corresponding equipment. Through the method disclosed by the embodiment of the invention, the independent transmission of the control information with less information bit can be supported, and the reuse of the existing transmission format on the same resource is realized.
Owner:ALCATEL LUCENT SHANGHAI BELL CO LTD

A device and method for on-line preparation of a weak grating array with continuous wavelength variation

The invention discloses a device and a method for preparing a weak grating array with continuous wavelength change online. The device mainly comprises an optical fiber drawing tower system and an online grating inscribing system, wherein a phase mask plate is mounted on one platform, accurate and rapid regulation and control of the central wavelength of an inscribing grating are achieved, a rotating platform is controlled by a central control system, a rotating angle of the phase mask plate is changed in real time according tochange of the central wavelength of the inscribing grating. According to the method for preparing the weak grating array with the continuous wavelength change online, the grating is inscribed online based on a phase mask method, and the grating array with the same orcontrollable reflectivity and the center wavelength capable of continuously changing is prepared by rotating the angle of the phase mask plate and enhancing and compensating corresponding laser pulseenergy. The device is advantaged in that the weak grating array with continuous wavelength change can be prepared, the shadow effect and crosstalk influence between the identical gratings can be effectively eliminated, and use requirements of a high-capacity dense optical fiber sensing network are further met.
Owner:WUHAN UNIV OF TECH +1

A transmission method and system for a physical downlink shared channel

The invention discloses a transmission method of a physical downlink shared channel, comprising: the network side determines the transmission parameters of the physical downlink shared channel PDSCH according to the transmission mode related to the DM-RS and / or the information related to the scheduled UE, and the transmission parameters of the PDSCH The transmission parameters include one or more of the following parameters: PDSCH resource mapping method, downlink DM-RS antenna port used, scrambling code sequence identity SCID and scrambling code initialization value X required for downlink DM-RS port sequence initialization; The network side sends data according to the determined transmission parameters of the PDSCH. The invention also correspondingly discloses a transmission system of the physical downlink shared channel. The present invention can realize DM-RS antenna port selection, use multiple DM-RS antenna ports to improve transmission reliability, eliminate interference, increase MU-MIMO multiplexing capacity, and improve frequency selection gain.
Owner:ADVANCED STANDARD COMM LLC
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