Abstract: This application provides a communication method and a communications apparatus. The communication method includes: a first terminal device determines a first parameter, where the first parameter is used to indicate a parameter of a sensing window, a parameter of a resource selection window, and/or a parameter of a first time window, and the first time window includes the sensing window and the resource selection window. The first terminal device determines a first resource pool from at least one resource pool based on the first parameter. The first terminal device selects a first resource from the first resource pool. The first terminal device transmits sidelink information on the first resource. According to the method provided in embodiments of this application, a data transmission delay can be reduced and system communication efficiency can be improved.

Abstract: A light troffer assembly has a cover panel. A T-bar frame has a right T-bar parallel to a left T-bar, and with a rear T-bar parallel to a front T-bar. A bracket frame is mounted between the cover panel and the T-bar frame. The bracket frame includes a first mounting bracket mounted above the right T-bar, a second mounting bracket mounted above the left T-bar, and a first mounting rail and a second mounting rail connecting the first mounting bracket to the second mounting bracket. The mounting bracket frame is sandwiched between the cover panel and the T-bar frame. An LED panel has an LED panel power supply, pivot hook latches and pivot pins.

Abstract: A retrofit light mount has a pivot rack configured to install to a T-bar frame. The pivot rack is elongated and has a U shape when viewed from above. A lamp has an LED box and a reflector. The lamp has a pivot end and a distal end. A pair of spade hooks are formed on the pivot end, including a first spade hook and a second spade hook. An inside rack vertical portion is formed on the pivot rack. The inside rack vertical portion is a vertically oriented panel. A first notch and a second notch are formed on the inside rack vertical portion. The first notch is configured to receive the first spade hook, and the second notch is configured to receive the second spade hook.

Abstract: A Rayleigh scatter light has a first layer and a second layer above the first layer. An LED emitter is mounted in the first layer. The LED emitter is configured to emit light. A focusing lens assembly is mounted in the first layer, and the focusing lens focuses light emitted from the LED emitter into a focused beam. A is mounted in the first layer. The near field mirror receives the focused beam and reflects a mirrored beam from the focused beam. A far field mirror is mounted in the second layer above the near field mirror. The far field mirror receives the mirrored beam from the near field mirror. The far field mirror reflects the mirrored beam to an angled beam. A Rayleigh scatter board is translucent and receives the angled beam which partially scatters when passing through the Rayleigh scatter board.

Abstract: A ceiling lamp, including: a lamp body, a mounting plate, a lighting module and a driving power supply electrically connected with the lighting module, the lighting module and the driving power supply are both disposed in the lamp body, the lamp body is detachably fixed to the mounting plate in a screwing manner; the ceiling lamp further includes a screwing assembly configured to detachably fix the lamp body to the mounting plate in a screwing manner, the screwing assembly includes a engagement module disposed on the mounting plate and configured to be electrically connected with the mains electricity, and a snap-fit module disposed at the lamp body and configured to be electrically connected with the driving power supply, the snap-fit module is connected with the engagement module in a screwing manner to form an electrical connection.

Abstract: A ceiling lamp, including: a lamp body, a mounting plate, a lighting module and a driving power supply electrically connected with the lighting module, the lighting module and the driving power supply are both disposed in the lamp body, the lamp body is detachably fixed to the mounting plate in a screwing manner; the ceiling lamp further includes a screwing assembly configured to detachably fix the lamp body to the mounting plate in a screwing manner, the screwing assembly includes a engagement module disposed on the mounting plate and configured to be electrically connected with the mains electricity, and a snap-fit module disposed at the lamp body and configured to be electrically connected with the driving power supply, the snap-fit module is connected with the engagement module in a screwing manner to form an electrical connection.

Abstract: A strip light has an elongated light module that mounts to a mounting frame with a lamp body bracket. The lamp body bracket is elongated and has a front mounting frame panel, a rear mounting frame panel, a right mounting frame panel, and a left mounting frame panel extending from a lamp body bracket base panel of the lamp body bracket. A first rotating shaft lock is mounted to the lamp body bracket base panel on a first axis of rotation. A second rotating shaft lock is mounted to the lamp body bracket base panel on second axis of rotation. The light module is secured to the lamp body bracket by a pair of rotating locks. An LED light board has LED chips. A hook groove system with a first groove and a second groove is mounted or formed underneath the LED light board.

Abstract: A grow light has a frame that includes a first frame rail and a second frame rail. The frame includes a first reflector. The first reflector extends from the first frame rail to the second frame rail. The frame has a second reflector. The second reflector extends from the first frame rail to the second frame rail. The frame has a right outside crossbar extending from the first frame rail to the second frame rail, and a left outside crossbar extending from the first frame rail to the second frame rail. Tube lights are elongated and extend from the frame. The tube lights have a vertical mode and a horizontal mode. The tube lights include a first tube light and a second tube light.