72results about How to "Reduce the number of slots" patented technology

The invention provides an iteration-enhanced amplifying and forwarding cooperated communication method which is mainly used for solving the problems of low frequency spectrum efficiency and high interruption probability of the existing cooperation method. The method comprises: according to the quality of service (QoS) requirement of a destination node, setting the receiving signal to noise ratio gammath of the destination node; during communication, comparing the signal to noise ratio of a received source signal with the gammath by the destination node; if the signal to noise ratio is larger than the gammath, feeding back to notify all relays to stop forwarding; otherwise, firstly selecting the front N relays with higher signal to noise ratios from the total M relays to perform forwarding, wherein each relay occupies one time slot; combining source nodes and the signals of all the forwarding relays by the destination node; comparing the total signal to noise ratio of the received signals with the gammath; if the total signal to noise ratio is larger than the gammth, feeding back to notify all the relays to stop forwarding; and otherwise, after the N relays finish forwarding, notifying the left M-N relays to forward together if the signal to noise ratio received by the destination node is still less than the gammath. By utilizing the method, the interruption probability of an audio frequency (AF) cooperation system can be lowered, and the frequency spectrum efficiency is improved.

The invention discloses a new cutting raise cutting technology used in underground mining. The technology is characterized by combining step cutting with parallel and oblique composite cutting, charging by steps and delaying primary blasting, wherein a parallel cut hole runs through the whole cutting raise length and is charged by two steps and an oblique cut hole inclines relative to a blasting plane and extends towards a center hole. The technology has the beneficial effects that the cutting raise once cutting length can be greatly increased, the cutting times can be reduced, the mine stoping process can be optimized and hazardous operation of workers under the condition that roofs are quite unstable during repeated cutting can be simultaneously avoided, thus reducing consumption of human and financial resources in the underground mine stope stoping process and improving the mine safety and production benefits.

The invention discloses a method for identifying an electronic label in an RFID system, and the RFID system. The method expresses the mathematical expectation value c1' of a timeslot number with electronic label response within the timeslot according to the probability theory of the electronic label for choosing the timeslot, and the mathematical expectation value c0' of an empty timeslot number without the electronic label response within the timeslot; the total number of the responding labels is estimated according to that c<k> equals to N minus c0' and c1'; then n', the number of the electronic labels which are not identified is estimated; later, the length of a frame which is set in the next response process is close to n', the number of the electronic labels. In the invention, the n', the number of the electronic labels to be identified is estimated according to the probability theory of the electronic label for choosing the timeslot, thus ensuring that the length of the frame set in the following responding process is close to the n', the number of the labels to be identified, as far as possible and the efficiency of identifying the electronic labels by the system reaches the maximum, and meanwhile, the timeslot number needed in the process of identifying the electronic labels is also the least. The method of the invention is easy to realize and has relatively high identifying efficiency (close to the theoretical max) especially under the condition of multiple electronic labels.

The embodiment of the invention discloses a method, device and equipment for generating a picking task in internal distribution warehouse-out, and a storage medium. The method comprises the steps: when a plurality of internal allocation delivery orders distributed to the same target warehouse are received, splitting each internal allocation delivery order according to article category identifiers,and generating delivery sub-orders corresponding to the article category identifiers in each internal allocation delivery order; for each article category identifier, according to the article numberin each warehouse-out sub-order corresponding to the corresponding article category identifier and a first preset article number, combining the warehouse-out sub-orders to obtain at least one target sub-task, wherein the to-be-sorted number of the target subtask does not exceed a first preset article number, and the first preset article number is determined according to the article number of corresponding article category identifiers which can be stored in the article storage container; and generating a picking task for each target sub-task. By means of the technical scheme, the number of storage positions located in the order picking task is reduced, and the subsequent order picking efficiency is improved.

The invention discloses an automatic copper ball feeder, which belongs to the technical field of copper feeders for electroplating equipment titanium baskets and comprises a ball box with an inner ball guide device, a feeder, an electrical box and a stand with firmly connected casters at the bottom. The ball box, the feeder, the electrical box and the stand are mutually and fixedly connected in a mechanical way. A ball guide passage is connected onto the feeder and communicated with a channel through a chute and a ball guide duct while the lower portion of the channel is connected with a titanium basket. The automatic copper ball feeder is capable of automatically controlling copper balls to be fed into the titanium basket and capable of automatically controlling the mount of copper balls to be fed and feeding speed and counting the total amount, so that production efficiency and production quality of electroplating equipment are improved and cost is reduced.

The invention provides a dynamic framed binary tree (DFBT)-based RFID anticollision method, and combines ideas of two types of existing label anticollision algorithms. A Vogt algorithm is adopted to estimate the number of to-be-identified labels in advance, a dynamic frame slotted ALOHA algorithm is selected to identify the labels, unidentified labels are extracted and subjected to collision position determination, and collision label splitting is carried out by combining the collision position condition and a binary tree algorithm. A simulation result shows that with a DFBT algorithm, identification time is shortened, the total number of required time slots is reduced and the identification efficiency is raised; when the label number reaches to around 1000, the system identification efficiency can still be maintained at around 64%; the identification efficiency of the DFBT algorithm is improved by 210% and 30% compared with that of the dynamic frame slotted ALOHA algorithm and that of a backward binary search tree algorithm respectively; and the method provided by the invention is featured by high stability and low cost and has a good application prospect in the current field of Internet of Things.

The invention discloses a method for optimizing a blind ultraviolet non line-of-sight Ad-hoc communication network shared channel. The method comprises the following steps: firstly, drawing up conflict graphs under three communication modes according to the characteristics of a blind ultraviolet non line-of-sight Ad-hoc network, and proposing a conflict avoidance model; then constructing a link conflict graph based on the conflict avoidance model, and proposing a dyeing theory to be applied on a time slot allocation control method of the blind ultraviolet non line-of-sight Ad-hoc communication network shared channel; further proposing a UVAd-TDMA protocol suitable for the blind ultraviolet non line-of-sight Ad-hoc network. The local link conflict graphs obtained by the method are small in color point quantity, namely the time slots divided within unit time are few, so that the target that different complementary interference channels are distributed to conflicted links by using the least time slot quantity within the unit time by the blind ultraviolet non line-of-sight Ad-hoc communication network is achieved.

The invention discloses a method applied to an ultrahigh frequency reader for efficiently identifying a tag. According to the method, firstly, a Q initial value of a system is set to be 2, the maximum likelihood estimation method is combined with the method, and the throughput rate of the system is calculated; secondly, the monotony of the throughput rate function when the tag number is larger than the time slot number, different step lengths delta Q are adopted for fast adjusting the Q value according to a throughput rate grouping manner of the system, and therefore the system can be in the optimal Q value identifying state all the time to perform identifying. According to the method, the throughout rate is stabilized to be at least 33 percent, when the Q initial value is smaller than the tag number, the set of the Q initial value little influences the throughout rate of the system, the dependency on the set of the Q initial value by the system is greatly relieved, and the stability and practicability of the system are improved.

The invention discloses a time slot resource allocation method and device. The method comprises the following steps: a network side measures the signal receiving qualities of time slots used by a user terminal and calculates the quantity of the time slots the signal receiving qualities of which are higher than a set threshold; the network side calculates the size of a transmission block when a first time slot resource allocation mode is allocated to the user terminal according to the calculated quantity of the time slots the signal receiving qualities of which are higher than the set threshold; and the network side calculates the size of a transmission block when a second time slot resource allocation mode is allocated to the user terminal according to the quantity of all time slots used by the user terminal; and the network side selects a time slot resource allocation mode and a time slot resource corresponding to the time slot resource allocation mode according to the calculated sizes of the transmission blocks of the first time slot resource allocation mode and the second time slot resource allocation mode. By adopting the method and device disclosed by the invention, the wireless resource utilization ratio can be improved.

The invention provides a method, an apparatus and a system for adjusting a power amplifier voltage and controlling a time slot. The method for adjusting the power amplifier voltage comprises the following steps of: determining the power amplifier voltage by a base station within a statistical time period according to the relation among carrier power control information, a power amplifier output power and power amplifier efficiency; selecting the power amplifier voltage of the current time point in the previous statistical time period of the statistical time period as a target power amplifier voltage; and adjusting the power amplifier voltage of the current time point according to the target power amplifier voltage, wherein the power amplifier of a multiple carrier module in the statistical time period works in a linear amplifying region. By adopting the method of the embodiment, the power amplifier voltage of the multiple carrier module can be dynamically adjusted and the time slot ofthe multiple carrier module can be dynamically controlled.

The invention relates to a self-adaptive multi-way tree anti-collision method based on a collision tree and belongs to the technical field of radio frequency identification. The method is characterized by selecting an eight-way collision tree or a two-way collision tree for search according to the number of collision tags and the number of collision bits, selecting the eight-way collision tree forsearch when the number of the collision tags is greater than or equal to four and determining a new query prefix by sending a query command to obtain the information of the first three collision bitsof a collision sequence, selecting the two-way collision tree for search when the number of collision tags is less than four. The method achieves non-free timeslot eight-way tree query by optimizinga query prefix, and thus effectively solves the problem of low search efficiency of a two-way tree under the condition that tags are too many and the problem that multi-way tree search causes increaseof free timeslots. Compared with the prior art, the method guarantees that a search process is free of free timeslots, effectively reduces the total number of timeslots of systems while greatly reducing collision timeslots, and thus increases the identification rate and the throughput rate of systems.

The invention discloses a wireless relay network uplink transmission method based on blind known interference cancellation. The wireless relay network uplink transmission method based on the blind known interference cancellation is characterized in that two users are simultaneously transmitted at a first time slot when the channel capacity between a first user and a base station is lower than transmission rate requirements and business data of a second user can be coded by the base station under the interference of sent signals of the first user, wherein the first user is located in a relay node business coverage area and the second user is located in a high-speed business coverage area, and the base station codes the second user business data and recovers second user dispatching signs from the composite signals of the two user; relay nodes can receive composite signals from the two users in a first time slot and the relay nodes amplify and transmit the composite signals in a second time slot; and the base station receives the composite signals which are transmitted by a relay in the second time slot and carries out the business data of the first user which are recovered by the blind known interference cancellation (BKIC). The wireless relay network uplink transmission method based on the blind known interference cancellation can accomplish uplink transmission of the two users in wireless relay network by only using two time slots in probability of tending to one under the condition of a higher signal to noise ratio. System spectrum efficiency is improved.

The invention discloses a resource allocation optimization method based on dynamic adjustment of an MF-TDMA single-beam satellite communication system. The method comprises the following steps: step 1, carrying out carrier allocation according to a service amount of a link application; step 2, dynamically adjusting the modulation coding mode of each link application by adopting a quantum immunization method; and step 3, allocating the time slot required by the link application on the carrier. On the basis that system time-frequency resources are fully utilized and the link application servicevolume is met, the MF-is realized by dynamically adjusting the modulation coding mode of each link application; and reasonable allocation of TDMA single-beam satellite communication system resources is realized.

The invention relates to a two-in-one feeding device for a sorting system, comprising a main line body, a straight section feeding platform, and an oblique section feeding platform; the straight section feeding platform is linearly connected with the front end of the main line body, The table is connected obliquely to the front side of the main line body; the straight section feeding table is equipped with a straight section detection photoelectric, the oblique section feeding table is equipped with an oblique section acceleration detection photoelectric at the front, and the rear is provided with an oblique section deceleration Photoelectric detection; the main line body is provided with a detection device capable of tracking and detecting the traveling position and time of each object on the main line body. The invention realizes the speed adjustment of the belts of each feeding table through a plurality of photoelectric sensors, and realizes that when two feeding ports feed parts at the same time, the number of vacancies on the main line body is greatly reduced, and the feeding efficiency is greatly improved, thereby sorting Efficiency is also greatly improved.

The invention provides a resource selection method and device and a terminal, and the method is applied to the terminal, and comprises the steps: selecting transmission resources for the first M timesof transmission of a service packet by executing resource sensing; transmission resources are randomly selected for N times of transmission after M times of transmission; wherein N + M is the total transmission frequency of the service packet, N is greater than or equal to 1, and M is greater than or equal to 1. According to the scheme, for the terminal sensitive to power consumption, the power saving efficiency can be improved while the transmission reliability is considered during resource selection.

The embodiment of the invention provides a mobile terminal antenna structure. The antenna structure comprises a first antenna, a second antenna, a third antenna, a fourth antenna, a fifth antenna, a sixth antenna, a matching circuit and a feed point, wherein a spacing area is arranged between one end of the first antenna and one end of the second antenna; a fourth antenna is arranged on one side of the spacing area, one end of a fifth antenna is opposite to one end of the fourth antenna, a third antenna is arranged on the side edge of the fifth antenna, and a feed point is arranged on the side edge of the third antenna; at least part of the third antenna is parallel to the fourth antenna and at least part of the third antenna is parallel to the first antenna; and the fifth antenna, the sixth antenna and the third antenna are electrically connected and intersect at one point, one end of the matching circuit is connected with the fifth antenna, the sixth antenna and the third antenna, and the other end of the matching circuit is connected with the feed point. According to the embodiment of the invention, the structural strength and the appearance visual effect of the mobile terminal can be improved, and the free space and the head-hand performance are better.

The invention provides a method, equipment and a system for controlling a slot time. The method for controlling the slot time comprises steps: determining a time span of a carrier frequency slot time of a multi-carrier module from a dormant mode to an available mode through a base station; and controlling the carrier frequency slot time of the multi-carrier module and the carrier slot time of the multi-carrier module through the base station according to the time span and the slot time occupation information of the multi-carrier module. The method of the embodiment of the invention can be adopted to solve a radio frequency index deterioration problem of the multi-carrier module when the base station dynamically turns off the available carrier frequency slot time of the multi-carrier module in an activated state.

The invention discloses an ultrahigh-frequency passive tag real-time parallel decoding method, a storage medium and equipment. The method comprises the steps: selectively reading a tag through a plurality of reference tags, transmitting two SELECT commands to select two reference tags, and setting a Query command to select the same time slot for response; decoding the collision signal by using a reverse reasoning method, detecting a lead code, detecting the lead code by using a cross-correlation method, comparing the received signal with a constructed lead code sequence by using a sliding window, positioning a lead code part and finding out a starting point of an RN16 part; decoding the conflicting RN16, deducing the symbol of the din through the dout adjacent to the din, then decoding thelabel RN16 by using a single label decoding mechanism, and generating a random number as an ACK command by using the decoded RN16; sending an ACK command, and proving that the EPC replied by the label successfully realizes decoding. According to the method disclosed in the invention, the communication between the reader and the label can be efficiently realized, and the communication throughput rate is improved.

The present invention relates to a protection mode of cross disc M to N. A link detection and capacity allocation unit A and a link detection and capacity allocation unit B are connected through a plurality of cross discs, according to a result of link detection, data service capacity is allocated on an available link, sending data service is started, after data is sent to each cross disc, the cross disc finds a corresponding physical link and finally forwards the data service to the link detection and capacity allocation unit B according to chip target MAC in the data service. According to the protection mode of the cross disc M to N, equal distribution of data of a service disc can be realized, seamless switching of the cross disc can be realized on this basis, a service flow of a cross disc protection mode is optimized to the max, a number of slots needed by the cross disc can be reduced, and cost pressure of too many cross discs and a technical bottleneck of sending simultaneously and receiving selectively are solved effectively.

The invention provides a zero-forcing precoding frame time slot anti-collision method for an RFID system and proposes a parallel anti-collision algorithm based on combination of zero-forcing precodingand a frame time slot ALOHA algorithm. Through the precoding technology, encoding is performed in advance before label transmission, so that error codes or collisions in a transmission and receivingprocess can be reduced. A simulation result indicates that when the total label number is 1000, the throughput rate is around 0.7 and is increased by about 83% compared with that of an ISE-BS algorithm, by about 20% compared with that of a DGBT algorithm, and by about 300% compared with that of an FSA algorithm. According to the invention, the throughput rate and the stability are improved and good application values are achieved in fields requiring quick identification of a large amount of labels.

The invention provides a quantum code symptom extraction line design method based on an equivalent unidirectional CNOT gate, which is used for solving the technical problem of high resource consumption in the prior art, and comprises the following steps of: constructing a position sequence number matrix, obtaining a stabilizer of a to-be-designed quantum code fault-tolerant symptom extraction line, constructing an equivalent unidirectional CNOT gate, determining a marking mode of the stabilizer in A, establishing a mark matrix F'm * k based on the equivalent unidirectional CNOT gate, establishing a to-be-detected matrix F''m * k, establishing a result matrix Fm * k of A, obtaining a current fault-tolerant symptom extraction line A, obtaining a fault-tolerant symptom extraction line B symmetrical to the current fault-tolerant symptom extraction line A, and forming a designed quantum code symptom extraction line by A and B together.

The invention relates to a DFSA and binary algorithm combined single-reader RFID tag identification method, and belongs to the technical field of radio frequency identification. According to the invention, the tag tail code in the collision time slot is processed by adopting a return type binary algorithm, and the search time of the reader is reduced by reducing the search frequency of the readerfor the tag, so that the total time slot number consumed by identification is reduced. According to the invention, the number of tags is estimated according to the identification condition of a reader, then tag identification is carried out by using a dynamic frame time slot strategy, if tag tail codes collide in the identification process, the reader records father nodes of collision positions, and after identification of one tag tail code is completed, the reader returns to the previous father node to continue identification. The invention is suitable for the scene that a single reader in small and medium-sized warehouses identifies the RFID tags, time slots wasted by tag collision in the small and medium-sized warehouses can be reduced, energy consumption of the reader is reduced, and therefore the identification efficiency is improved.

The invention discloses a multi-carrier base station power amplification system, which is characterized by comprising a multi-subcarrier modulation module, a radio frequency modulation module, an optical modulation module, a power amplifier circuit, a low noise amplifier circuit and a radio frequency switch control circuit, and is characterized in that the multi-subcarrier modulation module comprises a first digital access control unit and a multi-carrier radio frequency signal transmitted by a filtering base station; the radio frequency modulation module comprises a multi-carrier power amplifier and a low-noise amplifier on an uplink, the optical modulation module comprises a demultiplexer, a digital multi-carrier selector, a multi-channel microwave power divider, a plurality of power amplifiers and a combiner, and the power amplifier circuit comprises a plurality of component carriers. The low-noise amplifier circuit comprises at least two power amplifiers, at least two feedback sensors and a feedback switch controlled by digital logic, the radio frequency switch control circuit comprises a first switch circuit, the input end of the first switch circuit is connected with the output end of an input / output circuit, and the input end of the input / output circuit is connected with an input connector.

The invention provides a multi-cell MIMO-IMAC interference alignment method based on delayed CSIT, and mainly solves the problems of insufficient application scenarios and low degree of freedom in theprior art. According to the technical schemes of the invention, the method comprises the following steps that: system parameters are set; a user selects a specific sending strategy to send a signal vector to a base station according to the system parameters, and sets a time slot expansion multiple; a cell user sends the signal vector to a base station, and selects a user of a specific cell in each stage except the last stage so as to send a signal to the user; two different cells are selected in each super time slot of the last stage, so that a signal vector designed based on the delayed CSITis sent to a base station; the base stations eliminate interference and obtain the received interference-free signal vector, and interference alignment is realized. The application scene of a systemis expanded, the degree of freedom of the system under specific configuration is improved; and the method can be used for realizing interference management in MIMO-IMAC systems of two or more cells.

A method of copper electroplating in the manufacture of a printed circuit board is disclosed. The method is used for filling through holes and micro vias with copper. The method includes the steps of: (1) preparing an electronic substrate to receive copper electroplating thereon; (2) forming at least one of one or more through-vias and / or one or more micro-vias in the electronic substrate; and (3) electroplating copper in the one or more through-vias and / or the one or more micro-vias by contacting the electronic substrate with an acidic copper electroplating solution. The acidic copper plating solution comprises a source of copper ions; sulfuric acid; a chloride ion source; a brightener; a wetting agent; and a leveling agent. The acidic copper plating solution coats the one or more through-vias and / or the one or more micro-vias until metallization is completed.

The invention discloses an umbrella rib with double long ribs and double short ribs. Comprising a long fiber connector used for being connected to an upper nest, two long ribs connected to the long fiber connector, a short fiber long connector used for being connected to a middle nest, two short fiber connectors hinged to the middles of the long ribs respectively, and two short ribs, wherein one ends of the two short ribs are connected to the same short fiber long connector, and the other ends of the two short ribs are connected to the two short fiber connectors respectively. One end of the steel wire is hinged to one end, close to the short rib, of the short fiber long connector, and the other end is connected to the lower nest. The invention has the following advantages and effects: two umbrella ribs are connected to one long fiber joint, two short ribs are connected between one short fiber joint and two short fiber joints, and the steel wires are connected to the short fiber joints, so that the number of notches for connecting the umbrella ribs in the upper nest, the middle nest and the lower nest can be reduced, and the umbrella ribs are connected to the upper nest, the middle nest and the lower nest. The structural strength of the upper nest, the middle nest and the lower nest is not affected, and the umbrella has good wind resistance after the number of ribs of the umbrella is increased.

The invention discloses a wire saw machining center and an operation method thereof. The wire saw machining center comprises a wire saw cutting mechanism, a steel wire retracting and releasing mechanism and a working table; and a lower body of a tool holder is rotatably connected with an upper body of the tool holder, and the working table comprises a Y-direction reciprocating linear motion mechanism and a Z-direction reciprocating linear motion mechanism. The operation method of a wire saw machining center includes a cutting operation method of not replacing a roller single-wire saw, a two-wire saw and multi-wire saw plane section with arbitrary thickness, a cutting operation method of not replacing a roller single-wire saw, two-wire saw and multi-wire saw curved section with arbitrary thickness and a roller groove changing winding method. According to the wire saw machining center and the operation method thereof, a cutting material can be cut into the plane section or curved sectionwith arbitrary thickness without rewinding a steel wire, replacing rollers or rewinding the steel wire, multi-purpose of one machine can be achieved, and the operation method becomes the real operation method of the wire saw machining center.

The invention discloses a lock cylinder with bead and piece combined coded lock balls, which comprises a lock shell, a plug, a cam and a plurality of ball assemblies arranged on the upper side of the lock shell; each ball assembly comprises a ball spring and a flat ball, the upper side of the plug is provided with a plurality of coded slots corresponding to the ball assemblies in position along the axial direction, strip positioning pieces are connected with left and right sides of the plug, the lock shell is provided with positioning slots positioned at left and right sides and adaptive to the strip positioning pieces, the coded lock balls are arranged in the coded slots, each coded lock ball comprises a columnar top bead of which two sides are each provided with a chute, coded pieces are arranged in the chutes, bayonets adaptive to the strip positioning pieces are arranged at the outsides of the coded pieces, and steps matched with teeth of a key are arranged at the lower ends of the inner sides of the coded pieces.

A method and a device for adjusting a power amplifier voltage and controlling time slot occupancy are provided. A method for adjusting a power amplifier voltage includes: determining, by a base station, a power amplifier voltage in a statistical time period according to carrier power control information and a relation between a power amplifier output power and a power amplifier efficiency; selecting a power amplifier voltage in the previous statistical time period of the statistical time period of the current time point as a target power amplifier voltage; and adjusting a power amplifier voltage at the current time point according to the target power amplifier voltage. A power amplifier of a multi-carrier module works in a linear amplification area in the statistical time period. Through the method, dynamic adjustment of a power amplifier voltage and dynamic time slot control may be realized for the multi-carrier module.

A method performed by a transmitter node is disclosed for enabling receive beam selection at one or more receiver nodes. The method includes obtaining a polarization profile, where the polarization profile defines respective polarizations for a sequence of probe opportunities. The method includes transmitting pilot signals in a single transmit beam in each of a sequence of probe occasions according to a polarization profile. The polarization profile defines a first polarization used in N probing occasions in a sequence of probing occasions and a second polarization used in M probing occasions, where M is less than N and M is not zero.