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

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 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 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 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 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 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.

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.