15 results about "Guard time" patented technology

Systems, methods, and instrumentalities are disclosed herein associated with timing alignment in duplex. A wireless transmit / receive unit (WTRU) may be configured to determine a guard time period. The WTRU may receive information related to a grant allocation. The grant allocation may begin at a time associated with a number of starting symbol(s) within a subband. The WTRU may determine that the time associated with the number of starting symbol(s) is within the guard time period. The WTRU may calculate the difference between the time associated with the number of starting symbols and the start time of the guard time period. The WTRU may determine to puncture a part of the transmission that uses the grant allocation based on the size of the difference between the time associated with number of starting symbol(s) and the start time of the guard time period.

Methods, systems, and devices for wireless communication are described. For multiple passive devices, a reader device may configure guard time durations outside of one or more respective access occasions, whereas when communicating with a single passive device, a reader device may define guard time durations at boundaries within each respective access occasion of the passive device, where guard time durations may also increase with time. A reader device may further split resources to make room for forward link transmissions and additional backward link, or backscatter, communications, or may increase access occasions over time. Guard time durations or access occasions may be defined to increase by a quantity of time intervals in accordance with a defined pattern at one or more defined times. Additional signaling and configurations may be defined for reader devices and passive devices, including dynamic or defined configurations for guard time durations, access occasions, or ambiguity windows.

The invention provides an integrated control method and system based on a whole satellite control macro instruction, and the method comprises the steps: generating a macro instruction in a unified format, and the macro instruction comprises a header, segment information and an auxiliary package; uploading the macro instruction to a satellite integrated electronic system; analyzing the macro instruction, and dynamically scheduling a task queue according to task analysis time in the header; when the task is executed, cooperative operation of the associated subsystems is automatically triggered, and the cooperative operation comprises attitude and orbit control pointing, load startup and shutdown, solid memory recording or playback and link establishment; task conflicts are processed through a task queue conflict detection mechanism, the planned tasks cover the planned tasks of the same time window, and insertion of new tasks is shielded by the protection time window for the tasks in execution. According to the method, collaborative management and task scheduling of multiple subsystems such as satellite attitude and orbit control, load, solid storage and link are realized, the instruction complexity is remarkably reduced, and the whole satellite control efficiency and robustness are improved.

Provided is a wireless communication device capable of reducing a guard time when performing TDD communication. The wireless communication device performs time division duplex (TDD) wireless communication. The wireless communication device comprises: a means for setting the duration of a transmission / reception period, in which a transmission period for transmitting a signal to a target device and a reception period for receiving a signal from the target device in TDD wireless communication come in succession, to the same duration as a round-trip delay time of a wireless signal between the wireless communication device and the target device; and a means for periodically performing transmission to the target device and reception from the target device by repeating the transmission / reception period.

This invention belongs to the field of overload protection technology, and relates to an overload protection method for power devices based on energy integration. 2 The protection method includes step one: After the solid-state power controller starts working, the MCU periodically monitors the channel current I and simultaneously calculates the overload multiple M. I =I / I0; Step 2: Accumulate the heat value Q t Perform real-time calculations; Step 3: When Q t Not greater than the set protection threshold Q R When Q is active, disable the trip protection and return to step one; when Q is active... t Greater than the set protection threshold Q R When the overload tripping curve occurs, the circuit breaker is tripped, and the process returns to step one. This invention defines the essence of the overload tripping curve; the only parameter involved in the SSPC overload protection time calculation is the energy accumulation value Q. t Current overload factor M I It can determine the timing for trip protection.

The present invention transmits signals of many optical paths to an upper node by time-division multiplexing optical signals of many lower nodes using a single wavelength. The present invention suppresses a decrease in a transmittable band for each time slot due to an increase in the number of time slots to be statically allocated to each node with an increase in the number of optical paths. A shared time slot (16) which a plurality of lower nodes can use for transmission is prepared. An upper node regularly transmits an optical path header signal (15) including allocation information of the shared time slot and the plurality of lower nodes. Each lower node grasps the shared time slot allocated thereto from the allocation information of the optical path header, and transmits a time-division multiplexed optical signal at the timing when the corresponding shared time slot is in an empty state. The lower node that performs transmission transmits a shared timed slot state signal indicating the state of the corresponding shared time slot in a guard time interval (17). The upper node can designate an ID of a priority node capable of preferentially using the corresponding time slot among the plurality of lower nodes allocated to each shared time slot. The lower nodes other than the priority node wait for transmission until the time slot comes into an empty state.

The application provides a long-term guarding power supply system and a management and control method, which comprises a thermal battery, a low-power management and control module and a load. The thermal battery is connected with the low-power management and control module and the load. When the low-power management and control module receives an execution task signal, the thermal battery supplies power for the low-power management and control module and the load. The low-power management and control module is connected with the thermal battery and the load. During the guarding process, the low-power management and control module receives a wake-up signal, performs self-checking and other operations on the long-term guarding power supply system according to the received flow, and activates the thermal battery when the execution task signal is received. The load is a load for executing related tasks. The application prolongs the guarding time of the long-term guarding device, which can be up to several years, and realizes safe and reliable long-time guarding and task completion.

To provide a radio communication device capable of reducing a guard time when performing communication of a TDD system.SOLUTION: A radio communication device performs radio communication of a TDD (time division duplex) system. The wireless communication device includes means for setting a time length of a transmission and reception period in which a transmission period for transmitting a signal to a target device and a reception period for receiving a signal from the target device in wireless communication of a TDD scheme are continuous to the same time length as a round-trip delay time of a wireless signal between the wireless communication device and the target device, and means for periodically performing transmission to the target device and reception from the target device by repeating the transmission and reception period.SELECTED DRAWING: Figure 10

A distributed acoustic sensing (DAS) system that collects many frequency bands within the system (in particular, analog to digital converter, or ADC) bandwidth. The bands are divided into multiple groups, and within each group, the inter-band interference from band i to band j is at least l1 dB lower than the power of band j. For different groups, the inter-band interference is at least l2 dB lower than the power of band j, that l2≥l1+Cl, where Cl is a value related to round-trip fiber loss. The bands belonging to the same group are cascaded one after another, with little guard time in between, or packed back-to-back. This arrangement advantageously increases the overall signal power, resulting in an improved SNR.

This terminal comprises: a control unit that assumes that a guard time, which includes a waveform for which the value of power is zero or a prescribed value, is arranged at the head, the end, or the head and the end, of a pulse duration time of on / off modulation, in an orthogonal frequency division multiplexing symbol constituting a low-power wake-up signal; and a reception unit that detects and receives the low-power wake-up signal.

This invention relates to an SSPC overcurrent protection time acquisition device and method, belonging to the field of solid-state power distribution testing technology. The device includes: a multi-voltage signal conditioning circuit (supporting 28V / 270V / 540V), a microcontroller status acquisition module, and a host computer high-precision timing system. The signal conditioning circuit converts the high-voltage signal into a low-level logic signal recognizable by the microcontroller through optocoupler isolation; the microcontroller detects the I / O port status changes (0x00 / 0x01) in real time and uploads the data to the host computer via serial port; the host computer calculates the protection time with microsecond-level accuracy based on the Stopwatch function. This invention solves the problems of high cost, low accuracy, and poor multi-voltage compatibility of traditional testing equipment, and features safe isolation, fast response, and high accuracy.

The invention relates to an end system adaptive time slot escorting and synchronous control method based on a Linux kernel. The method comprises the following steps: establishing a unified time reference of an end system based on a time service mechanism; based on a unified time reference and a secure transmission constraint condition, constructing an inner-layer schedule on a kernel side through a time-aware queue rule, forming outer-layer escort on a port side through a gating list, and constructing to obtain a double-layer time slot escort structure; and constructing an adaptive guard band and phase compensation control law based on the jitter state and the alignment error of the clock, and adaptively adjusting the guard time band and windowing phase compensation of the double-layer time slot escort structure based on the control law so as to realize adaptive time slot escort and synchronous control of the end system. In the prior art, jitter exists in a transmission process from an end system kernel to a physical port, which may cause transmission time slot border crossing; and the problems of drifting of a dispatch table, non-uniform corresponding relation between service priority and a time slot table and the like caused by master clock switching or time service lock losing are solved.

The present disclosure provides a method performed by user equipment in a wireless communication system for subband full duplex operation. The method comprises receiving a Time Division Duplexing uplink / downlink configuration indicating TDD UL / DL patterns for TDD periods, wherein TDD patterns indicate symbol type for each symbol in the TDD periods. The method comprises receiving scheduling for Physical Uplink Shared Channel repetition transmission. The method comprises obtaining invalid symbols for guard time when switching symbol types in PUSCH repetition transmission. The method comprises determining guard time allocations for switching symbol types in PUSCH repetition transmission based on invalid symbols. The method comprises determining actual repetitions according to the received indication and obtained invalid symbols. The method comprises transmitting the actual repetitions.

An apparatus for a device for a wireless communication system, the apparatus including at least one processor, and at least one memory storing instructions that, when executed by the at least one processor, cause the device to: allocate resources for sensing based on a guard time between resources for downlink and uplink transmissions, perform sensing using the resources allocated for the sensing.