30results about How to "Avoid false switching" patented technology

The application provides a method executed by user equipment UE, comprising the following steps: receiving a first radio resource control RRC message containing a switching command from a base station; determining whether a first condition contained in the first RRC message is satisfied; and if the first condition is satisfied, sending a switching indication to the base station, wherein the switching indication is used to inform the base station that the UE is about to start switching. The application further provides user equipment and a corresponding base station. Through the technical scheme of the application, the data transmission interruption time in the switching process in NR can be further reduced, and unnecessary wrong switching can be avoided.

The invention provides a method executed by user equipment UE. The method comprises the following steps: receiving a first radio resource control (RRC) message comprising a switching command from a base station; keeping the switching configuration in the first RRC message; and managing the switching configuration. The invention also provides the user equipment and the corresponding base station. The UE still keeps communication with a source base station before receiving the RRC message comprising the switching command and before carrying out switching, thereby reducing data transmission interruption time.

A control loop system for a multi-mode digital switching power supply, including a digital sampling module, an error generation module, a state register module, a state judgment module, an error amplification module, a control voltage limiting module and a multi-mode switch signal generation module, the digital sampling The module collects the controlled signal and converts it into a digital signal Vod. The state judgment module judges the state value state that the control loop system needs to enter according to the trigger condition of the state transition. The error amplifier generates the control value P(n) according to the error signal e(n). The control quantity P(n) enters the control voltage limiting module, and the control voltage limiting module obtains the corresponding control voltages Vc1(n) and Vc2(n) according to the state value state and P(n) of the control loop system at this time, multi-mode The switching signal generating module obtains a duty ratio signal according to Vc2(n) and the state value state, and controls the conduction of the switching tube of the controlled power converter.

An embodiment of the present invention provides a shared protection method in an optical transport network, a first node device, and a system, and relates to the field of communication technology. The shared protection method in an optical transport network includes: the first node device obtains fault information, and the second node device obtains fault information. A node device is a node device that detects a fault; the first node device judges whether the fault information belongs to the switching condition of the preset high-order ODUk1 group, and if so, obtains the first information according to the fault information, and converts the second One piece of information is sent to other node devices in the ODUk shared protection ring respectively, so that other node devices realize the group switching of interrupting the service according to the first information; if not, the first node device obtains the second information according to the fault information, and sends the second The information is sent to the other node devices respectively, so that the other node devices implement individual switching of interrupted services according to the second information. The invention improves the speed of service switching.

The invention discloses a method and a system for protection switching, wherein the method comprises the following steps that: a standard subframe or an extended subframe determines the attribute of a protection switching notification event according to a preset strategy; the standard subframe or the extended subframe sends the protection switching notification event to service units and other subframes inside the standard subframe or the extended subframe according to the determined attribute of the protection switching notification event; and the first service unit and the second service unit perform the selection of transmission entities according to the protection switching notification event. The technical proposal can correctly perform protection switching, and solve the problems of switching deadlock or error switching caused by using a pure sustainable event or transient event to notify the protection switching at the same time.

The method includes following steps: (1) setting up on optical monitoring channel, optical power detection device is in use for detecting optical power of optical monitoring channel; (2) based on optical power of main optical channel in working line, optical power of main optical channel and optical power of monitoring channel in protective line to determine whether protection and rearrangement system is start up or not. The invention can prevent light protection effectively from being error rearranged in procedure adopted continuously. The invention guarantees use of light protection, raises survivability of network, and provides technical groundwork for using linear protection in operation and maintenance.

The network protection method, network node, and communication system provided by the embodiments of the present invention obtain the communication status of the source node of the protection section when the path of the transmission service has signal degradation or signal failure, and according to the communication status of the source node, and The communication status of the local communication path determines whether to perform protection switching, which can avoid false switching to a certain extent, thereby improving the accuracy of protection switching in the communication network.

A method for distributing wireless resource in multicarrier time division duplexing mobile communication system, such as TD-CDMA system, to overcome the shortage of 3GPP single carrier cell channel distribution technology of covering more lager area in composing cellular system, which contains using an area of covering same or almost same as a cell, selecting one carrier as main carrier and other carriers as auxiliary carrier, the frequency of main carrier is as different as possible, setting all public control channel in main carrier, the left resource of main carrier and resource of auxiliary carrier are used in uplink and downlink service channel, the arrangement of public channel in main carrier is same with that in single carrier cell.

The invention belongs to the technical field of pipeline valves and discloses a ball valve. The ball valve comprises a valve body, a valve ball, a driving shaft, a first inlet valve seat, a first outlet valve seat, a second inlet valve seat and a second outlet valve seat; the first inlet valve seat and the first outlet valve seat are located at the inlet position and the outlet position in the valve body respectively and form normal contact sealing with the valve ball; the second inlet valve seat and the second outlet valve seat are located at the inlet position and the outlet position in the valve body respectively and form selective contact sealing with the valve ball; and when the sealing between the first inlet valve seat and / or the first outlet valve seat and the valve ball fails, the second inlet valve seat and the second outlet valve seat respectively move relative to the valve body and respectively form contact sealing with the valve ball. According to the ball valve provided by the invention, double-seal switching can be achieved, the anti-leakage effect is improved, and the ball valve has the longer service life.

The invention relates to the technical field of hydropower station water turbine governor control systems, in particular to a water turbine governor servomotor double-sensor redundancy type fault detection method. By measuring and calculating the displacement change rate, the displacement change rate difference, the displacement change accelerated speed and other related variable values of two displacement sensors, corresponding logical judgment is conducted, and accordingly, the fault situation of the redundant displacement sensor of a servomotor is obtained. Through the method, the problem that under the condition that a slide block connection rod or a stay wire of a servomotor displacement sensor is broken, but an output signal is normal, the fault of the displacement sensor cannot be detected out can be effectively solved, and misjudgment for other fault types is effectively prevented; and the reliability of a water turbine governor control system is greatly improved, and safe stable operation of a water-turbine generator set is ensured.

The invention provides a current detection circuit for a PWM / PFM dual-mode DC-DC switching power supply. The detection circuit is used for carrying out high-side switching tube peak current detectionand inductive current zero-crossing detection, carrying out zero-crossing cycle counting, and when five consecutive cycles have zero crossing, triggering a PWM mode to be switched to a PFM mode. The current detection circuit is an on-chip circuit and comprises a peak current detection circuit, an inductive current zero-crossing detection circuit and a zero-crossing cycle counting circuit. By configuring source end voltage of a current mirror image tube, mirror image precision of the current is ensured; by detecting source end current of the mirror image tube, a peak current detection functionis realized; and by sampling drain end voltage of SN of an NMOS transistor, when the voltage rises from a negative level to a positive level, a zero-cross signal is output, and zero-crossing cycle counting is started, thereby realizing inductive current zero-crossing detection and counting functions. The reference circuit is simple in structure and high in precision, and is suitable for the PWM / PFM dual-mode DC-DC switching power supply.

The invention provides a large-scale multiple-object ultrasonic tracking and locating system and method, relating to an indoor object tracking and locating system and method based on ultrasonic wave. The large-scale multiple-object ultrasonic tracking and locating system comprises an emitting assembly, a receiving assembly and a calculating display unit, wherein the emitting assembly comprises a plurality of ultrasonic signal emitters with different frequencies or different time slot features, and each emitter is installed on different objects and used for periodically emitting ultrasonic signals; the receiving assembly comprises a plurality of ultrasonic signal receiving and processing units for receiving and processing the ultrasonic signal emitted by the emitter; and the calculating display unit comprises a USB (Universal Serial Bus) and an upper computer three-dimensional display server. The invention realizes the tracking and the locating of large-scale multiple-object by schemes of spatial subdivision, time frequency combination, spatial handoff and the like. The locating system of the invention has the characteristics of large locating range, multiple tracking objects, no synchronous error, no need of complex network protocol, low power consumption, high stability and the like.

The invention relates to an optical fiber line warning door line protection method of a wavelength division system, which concretely comprises the following steps of: subtracting the receiving optical power of a local terminal optical protection unit from the optical power of the transmitting port of a paired optical protection unit to obtain the line insertion loss value of a fiber core, and sequentially detecting the line insertion loss values of a main fiber core and a spare fiber core; wherein the line insertion losses are adopted as switching criterions which comprise two switching criterions, one switching criterion is the criterion for switching from a main line to a spare line and comprises the conditions that the line insertion loss value of any fiber core of a main fiber exceeds the set switching threshold value of the line insertion loss, and the line insertion loss values of two spare fiber cores are both above the set warning threshold of the line insertion loss; and the other switching criterion is the criterion for switching from the spare lines to the main line and comprises the conditions that the line insertion loss of any spare fiber core in the two spare fiber cores exceeds the set switching threshold, and the line insertion loss mean value of the two fiber cores is above the set warning threshold. The invention adopts the line insertion loss as the switching criterion for the line protection of the wavelength division system and effectively solves the difficult problem on multi-span section protection of the wavelength division system.

The invention provides an access router and link reliability protection method, which relates to the communication field. The method for protecting reliability of a link between an access network and a backbone network comprises the following steps that: an access router starting virtual router redundancy protocol (VRRP) protocol of a VRRP virtual gateway is configured; the VRRP virtual gateway establishes a virtual private local area network segment (VPLS) tunnel between every two adjacent access routers through the backbone network; the access router is connected with the VPLS tunnel through a built-in virtual access circuit interface, and the virtual access circuit interface is an access circuit access point for a VRRP signaling to enter the VPLS tunnel; and the VPLS tunnel carries the VRRP signaling. Due to the adoption of the method, mistaken switching of the access rate (AR) main device caused by the malfunction of the link can be avoided.

The present invention discloses a method, an access network control node, and a system for receiving and sending load information, relating to the field of communications. According to the present invention, statistics about load data are separately provided based on sub-service types of CS and PS series of cell A, and load information is compiled by using the load data. The load information is sent to a second access network control node so that an access network control node of cell B closes cell B and / or performs an inter-cell handover for a UE. Therefore, network resources are properly used, thereby avoiding an incorrect cell closing and handover.

The invention provides a remote controller, a display device and a remote controller operation mode switching method. The method comprises the steps of generating a specific command and sending the command; after the specific command is received, turning off a passive switching unit, and switching the operation mode of the remote controller according to the specific command. The remote controller comprises a mode switching module which comprises an automatic switching unit and the passive switching unit, wherein the automatic switching unit is used for turning off the passive switching unit and switching the operation mode of the remote controller according to the specific common after receiving the specific command sent by the display device; the passive switching unit is used for switching the operation mode of the remote controller according to the external operation. The display device comprises a command generation module which is used for generating the specific command and sending the specific command into the remote controller. According to the specific command generated by the display device, the key mode and the idle mouse mode can be automatically switched, so that wrong switching caused by artificial misoperation can be effectively avoided.

The invention discloses a method and a system for protection switching, wherein the method comprises the following steps that: a standard subframe or an extended subframe determines the attribute of a protection switching notification event according to a preset strategy; the standard subframe or the extended subframe sends the protection switching notification event to service units andother subframes inside the standard subframe or the extended subframe according to the determined attribute of the protection switching notification event; and the first service unit and the second service unit perform the selection of transmission entities according to the protection switching notification event. The technical proposal can correctly perform protection switching, and solve the problems of switching deadlock or error switching caused by using a pure sustainable event or transient event to notify the protection switching at the same time.