45results about How to "Reduce positioning delay" patented technology

According to one embodiment of the present invention, a method for calculating the location of a terminal in a wireless communication system, which is to be performed by the terminal, comprises the steps of: transmitting, to a location server, a request for location estimation assist data for calculating the location of the terminal; receiving the location estimation assist data from the location server; and calculating the location of the terminal using the location estimation assist data. The location estimation assist data includes radio map information including a received signal strength (RSS) value from each access point collected at a plurality of location estimation reference points in a region having a predetermined range. The radio map includes information regarding the location estimation reference points (hereinafter, referred to as “update points”) which require an update of the radio map. The method may further include a step of determining whether or not an update of the location estimation assist data is required based on the calculated location of the terminal and the information regarding the update points.

The invention provides a terminal location method and terminal location system, characterized in that the terminal location method comprises: a service base station of a to-be-located terminal transmits sector identification of each location base station and location access probe sequence within the sector of each location base station to a terminal; the terminal transmits corresponding location access probe sequence to one of the location base stations after receiving a forward super-frame prefix sent to one of the location base stations; one of the location base stations recognizes that the location access probe sequence is used for locating terminals, calculates return time delay from the terminal to one of the location base stations according to receiving time which receives the location access probe sequence and sending time of the forward super-frame prefix, and reports to a controller of the service base station; the controller of the service base station locates the terminal according to position information of each location base station and the reported return time delay. By using the invention, MACID resource and wireless resource are saved and the time needed by locating terminal is reduced.

The present invention proposes an intelligent parking management device based on dual-antenna differential and parking lock, including a dual-antenna positioning beacon, a parking lock, a centralized controller, a car owner’s smartphone, and a background server. The wireless link is connected to the owner's smartphone and broadcasts positioning information to the owner's smartphone. The owner's smartphone communicates with the background server through a 3G/4G wireless link to obtain information about the parking lot and parking space for parking guidance, and at the same time obtain the parking duration and For charging information, the background server communicates with several parking locks through a centralized controller to control the locking or unlocking of the parking locks; the present invention uses low-cost parking locks to avoid the reserved parking spaces being occupied, and introduces high-performance dual-antenna differential signal processing. Reliable and accurate positioning technology realizes precise positioning of moving vehicles and personnel at the parking space level, helps car owners quickly find parking spaces through path planning and navigation interface, and improves the parking experience of car owners.

The invention provides a method for reducing E-CID (Enhanced Cell-ID positioning method) positioning delay and signaling overheads. The method aims to solve the problem about which scheme needs to be adopted to guarantee the smooth completing of the switching process and the positioning process if the E-CID is conducted on switched UE and to reduce the delay and signaling resources of the two processes as far as possible. According to the scheme, only switching based on an X2 port and an S1 port between base stations in an LTE system is concerned, for X2 switching and S1 switching between the base stations, E-CID measuring configuration information is carried in a switching request message, and after a target base station is switched, the positioning process of the UE can be completed continuously according to the E-CID measuring configuration information brought about by a source base station. According to the method, for the UE needing to be switched, due to the fact that the UE does not need to interact with the E-SMLC, the positioning delay and signaling resources can be reduced.

An embodiment of the invention provides an inertial sensor and visual sensor data fusion algorithm. With the adoption of the provided inertial sensor and visual sensor data fusion positioning method,positioning information is determined according to first positioning data, acquired by an inertial sensor, of a positioning point and second positioning data, acquired by a visual sensor, of the positioning point, or the positioning information is determined according to the first positioning data when the second positioning data acquired by the visual sensor are not acquired, so that the positioning information is not required to be always determined according to the second positioning data acquired by the visual sensor when two-dimensional space coordinates and/or three-dimensional space coordinates are determined, the positioning information can be still output when the frequency of the visual sensor is lower or the accurate positioning data cannot be determined according to acquired images, the output frequency of the positioning information is improved and positioning delay is reduced.

The invention discloses an unmanned ship-oriented unmanned aerial vehicle autonomous landing control method, and belongs to the field of machinery and control. The method comprises the following steps: (1) determining an area where an unmanned ship is located through a GPS (Global Positioning System), and guiding an unmanned aerial vehicle to fly over the unmanned ship to complete first positioning; (2) after the unmanned aerial vehicle descends to the UWB effective height, determining the relative position of the unmanned aerial vehicle and the unmanned ship parking apron through an airborne UWB label, and completing second positioning; (3) identifying an AprilTag code of the parking apron through an airborne visible light camera, identifying a constant-temperature heat source on the parking apron through an airborne infrared camera at the same time, and fusing UWB, infrared and visible light positioning data to complete third positioning; and (4) when the unmanned aerial vehicle completes all positioning processes, starting an autonomous landing program to complete landing operation. The method depends on a multi-sensor information fusion technology, the accuracy and robustness of autonomous landing positioning of the unmanned aerial vehicle are well guaranteed, and the limitation that GPS positioning is not high in precision and traditional monocular vision positioning is prone to being interfered by the environment is overcome.

The embodiment of the invention provides a method, device and equipment for transmitting a positioning purpose reference signal and a computer readable storage medium. The method comprises the step ofsimultaneously transmitting the positioning purpose reference signal with one or more pieces of network equipment through N antenna ports. The method comprises the following steps of: transmitting apositioning purpose reference signal based on a plurality of antenna ports, so that the positioning purpose reference signals between the UE and the plurality of network devices can be transmitted atthe same time, the UE can measure the positioning measurement parameters between the UE and the plurality of network devices at the same time, the positioning time delay is reduced, and the positioning precision is improved.

The invention relates to an energy-saving indoor uplink positioning method and system, and the method comprises the following steps: S1, a positioning Bluetooth terminal transmits a preset uplink positioning access Bluetooth broadcast in a determined period, and an indoor distributed antenna monitoring system waits to inform the positioning Bluetooth terminal that the positioning Bluetooth terminal is monitored by uplink positioning; wherein the uplink positioning access broadcast comprises the following data: a positioning access sign + a preset service sign + a subscription service providersign + a user attribution + user identification data + transmitting power + a broadcast period. The invention is reasonable in design, compact in structure and convenient to use.

The embodiment of the invention provides a positioning method and system. The method comprises the steps that a positioning management function LMF located in an access network receives information sent by network equipment in the access network or sends information to the network equipment. According to the scheme of the invention, the positioning time delay can be saved.

Provided is an enhanced cell-ID (E-CID) terminal positioning method, comprising: receiving a positioning request, and enabling measurement according to the positioning request; when determining that a neighboring cell of a serving cell where the terminal is located is a cell located in the current eNode B, acquiring the position information of the neighboring cell; and transmitting a positioning response carrying the position information. Also provided are an alternative E-CID terminal positioning method, E-CID terminal positioning system, eNode B and computer storage medium.

Embodiments of the invention provide a measurement method and device for positioning, and a storage medium. The method comprises the following steps: receiving resource configuration information and measurement constraint information sent by a positioning server, wherein the measurement constraint information is used for indicating how target equipment uses the resource corresponding to the resource configuration information for measurement; and performing resource measurement based on the resource configuration information and the measurement constraint information, and sending a measurement result to the positioning server. According to the embodiments of the application, the measurement constraint information is added to perform positioning measurement limitation, so UE or the base station only measures a reference signal in an effective direction, the measurement complexity of the UE and the base station is reduced, and positioning time delay is also reduced.

The embodiment of the invention discloses a positioning method and device, equipment and a storage medium, and the method comprises the steps: extracting a first target feature point from an image collected by image collection equipment; extracting a second target feature point on the image outside the forbidden area determined by taking the first target feature point as the center; and matching the first target feature point and the second target feature point with a plurality of sampling points in a preset map to determine position information of the image acquisition device.

The invention relates to an EFI-based cooperative localization node selection method. The EFI-based cooperative localization node selection method comprises the steps that a precision threshold g of alocalization system is set according to the application requirement, and a target node acquires a neighbor node set; the target node updates an edge Fisher information matrix of the target node according to the edge Fisher information matrix of the target node and received edge Fisher information matrixes of neighbor nodes and calculates SPEBi and SPEBj; the node enabling the SPEBi and SPEBj to be minimum is selected and added into Ii, and the I node is removed from deltai; the step 2, the step 3 and the step 4 are repeated according to the updated edge Fisher information matrix of the targetnode until the localization precision of the node is lower than or equal to g; and the location of the node is calculated with nodes in I.

The invention provides a wireless communication method and device, which can reduce the positioning delay. The method comprises: a terminal device receives positioning measurement information of a PRS to be measured sent by an LMF; the terminal device determines a first measurement gap for performing positioning measurement on the to-be-measured PRS according to the positioning measurement information of the to-be-measured PRS, wherein the information of the first measurement gap is sent to a base station by the terminal device and/or the LMF.

The invention discloses a collision processing and indicating method, equipment, a device, and a medium. The method comprises the steps: user equipment obtains the type of a downlink positioning reference signal and collision judgment information, wherein the collision judgment information is one or a combination of the following information: content carried by a downlink signal or a channel, first indication information, second indication information and third indication information, the type of the downlink positioning reference signal is an aperiodic positioning reference signal or a semi-continuous positioning reference signal, the first indication information is used for indicating a positioning time delay demand, the second indication information is used for indicating the priority of the downlink signal or the channel, and the third indication information is used for indicating priorities of the first indication information and the second indication information; according to the downlink positioning reference signal type and the collision judgment information, determining that the downlink positioning reference signal or other downlink signals or channels are selected to be discarded on the collided orthogonal frequency division multiplexing symbols. The invention can improve the positioning precision and reduce the positioning time delay.

Embodiments of the present invention provide a positioning measurement processing method and equipment for user equipment. The method includes: the second base station receives a handover request sent by the first base station, and the handover request includes an E-CID measurement association identifier and a UE identifier; after receiving the handover completion message of the UE, the second base station sends a message to the MME Sending a path switch request message, the path switch request message including the UE identity and an immediate trigger location request indication; wherein the immediate trigger location request indication is used to instruct the MME to immediately send a second location request to the E-SMLC message; the second base station receives the second E-CID measurement start request sent by the E-SMLC, and performs the E-CID measurement on the UE according to the second E-CID measurement start request; thereby realizing During UE handover, the E-CID positioning delay caused by re-triggering positioning measurement is reduced.

The invention relates to a method and device for determining the satellite validity, a storage medium and electronic equipment, and aims to reduce positioning delay. The method comprises the steps ofdetermining a code phase estimation value and a Doppler estimation value of a captured satellite signal; performing frequency offset correction on the satellite signal according to the Doppler estimation value; performing correlation calculation on the corrected baseband signal according to the code phase estimation value; performing phase rotation on the baseband signal after correlation calculation according to a plurality of preset frequency offsets to obtain a plurality of corresponding correlation value sequences, and dividing the correlation value sequences according to a plurality of preset bit boundaries for each correlation value sequence to obtain a plurality of target sub-sequences; and for each correlation value sequence, performing coherent accumulation on the target sub-sequence corresponding to each preset bit boundary to obtain a plurality of metric values, and if the ratio of the maximum metric value corresponding to the code phase estimation value to the noise power of the satellite signal is greater than or equal to a preset threshold value, determining that the captured satellite signal is valid.

Embodiments of the present invention provide a method and a device for positioning a user equipment in a handover process. The method mainly includes: receiving, by a target base station of the user equipment in the handover process, positioning measurement related information of the user equipment transmitted from a source base station of the user equipment; and performing, by the target base station, a positioning measurement for the user equipment according to the positioning measurement related information after the user equipment has accessed the target base station successfully. Embodiments of the present invention enables the target base station to perform positioning measurement for the user equipment immediately after the UE has successfully accesses the target base station, and eliminates the need for a positioning server to retrigger a user equipment positioning process, thus reduces the signaling cost caused by retriggering the user equipment positioning process.

The invention provides a positioning device and equipment. The positioning device comprises a microprocessor, a power management module, a data receiving module and a data output module, and the microprocessor is connected with the power management module, the data receiving module and the data output module. The microprocessor comprises a programmable logic PL module and a processing system PS module which are connected with each other, the PL module is connected with the data receiving module, and the PS module is connected with the data output module. The PL module receives original observation data of a global navigation satellite system (GNSS) and atmospheric correction data through the data receiving module, and sends the original observation data of the GNSS and the atmospheric correction data to the PS module; and the PS module adopts a PPP-RTK algorithm to determine the position data of the positioning device according to the GNSS original observation data and the atmospheric correction data, and outputs the position data through the data output module. According to the device, the data processing capability of equipment is improved, and the universality and portability of the equipment are also improved.

The embodiment of the invention relates to the technical field of wireless communication, and discloses a reference signal transmission method, user equipment, network equipment and electronic equipment, and the reference signal transmission method comprises the steps: receiving the configuration information, transmitted by first network equipment, of a positioning purpose reference signal; and then, according to the configuration information, transmitting the positioning purpose reference signal for a first time with the second network equipment in one time slot, wherein the first time is aninteger greater than 1. According to the method provided by the embodiment of the invention, the positioning purpose reference signal can be sent for multiple times in one time slot, and the sending of the positioning purpose reference signal based on the micro time slot is realized, so that the positioning precision is improved, the positioning time delay is reduced, and the requirement of an NRsystem on a positioning technology is met.

The invention provides a camera shooting type touch control method and device. The method comprises the following steps: firstly computing the first initial coordinates of a touch object and then computing the theoretical value of the touch positioning information of the first initial coordinates which are shot by a third camera device or a fourth camera device according to the first initial coordinates; and then comparing the theoretical value of the touch positioning information with the actual value obtained through shooting and screening the first initial coordinates to determine the coordinate of the touch object. The method and the device have the following beneficial effects that: the initial coordinates are unnecessary to compute twice, the computation amount in camera shooting type positioning and positioning time delay are reduced and the speed of camera shooting type touch positioning is increased; as the two camera devices are adopted to respectively shoot the two subareas of a touch control area, fisheye lenses with high performance are unnecessary to install, thus lowering the cost; and as the subarea where the touch object possibly appears is firstly judged and then the shot images are obtained from the corresponding camera device, the shot images of the two camera devices are unnecessary to obtain, thus simplifying a positioning process and speeding up positioning.

The invention belongs to the field of audio and video transmission control. The invention relates to an information output method and system based on an H.265 protocol distributed system. The information output method based on the H.265 protocol distributed system comprises the following steps: in a state that a source filter is activated, receiving video stream data sent by a sending end, and reading current image information parameters in the video stream data; in a state that the current image information parameter is matched with a preset image parameter, forming first frame data based onthe video stream data matched with the current image information parameter; and establishing a filter chart in a state of obtaining the first frame data, and outputting audio and video data information matched with the first frame data to a decoder.