Abstract: The present invention provides a single-crystal high-nickel positive electrode material and a preparation method therefor and an application thereof. The preparation method comprises the following steps: (1) mixing a precursor, a lithium source, and a nano oxide, and performing primary sintering treatment in an oxygen-containing atmosphere to obtain a primary sintered material; and (2) mixing the primary sintered material obtained in step (1) with a titanium source and a cobalt source, and performing secondary sintering treatment in an oxygen-containing atmosphere to obtain the single-crystal high-nickel positive electrode material. The present invention uses a Ti/Co co-coating method, the residual alkali amount of the prepared single-crystal high-nickel positive electrode material can be greatly reduced, and the capacity and the rate capability can also be kept at a high level, so that the technological process is reduced, and the cost is reduced.

Abstract: A composite material and a preparation method therefor and a lithium-ion battery positive electrode material. The preparation method for the composite material comprises the following steps: performing first calcination treatment on a mixture of a manganese source, a nickel source, a lithium source and a cobalt source to obtain cobalt-doped lithium nickel manganese oxide; and performing second calcination treatment on a mixture of the cobalt-doped lithium nickel manganese oxide and silicon dioxide.

Abstract: Provided are a signal processing method and apparatus, a storage medium, and an electronic apparatus. The method is applied to an optical communication receiving end, and comprises: after receiving an optical analog signal, converting the optical analog signal into a digital signal; and performing nonlinear effect compensation processing on the digital signal.

Abstract: A service transmission method and apparatus, a sender and a storage medium are disclosed. The service transmission method, applied to at a sender, may include: preempting, by one transmission entity, a transmission opportunity of another transmission entity to perform service transmission.

Abstract: The present disclosure provides a ranging method and a registration method for an optical network, an Optical Line Terminal (OLT), an Optical Network Unit (ONU), and an optical network system. An OLT groups ONUs controlled by the OLT according to receiving optical power values of the ONUs. The OLT allocates corresponding uplink bandwidths to the ONUs in different groups, the uplink bandwidths being used to send registration information by the ONUs to be registered.

Abstract: A ranging method for an optical network, an OLT, an ONU, and an optical network system are provided. The OLT sends a bandwidth allocation message to the ONU; an OLT receiving a response message sent by an ONU in a first sending mode, wherein the first sending mode comprises sending power and a transmission rate; and the OLT performs ranging on the ONU according to the response message.

Abstract: The present disclosure provides a ranging method and a registration method for an optical network, an Optical Line Terminal (OLT), an Optical Network Unit (ONU), and an optical network system. An OLT groups ONUs controlled by the OLT according to receiving optical power values of the ONUs. The OLT allocates corresponding uplink bandwidths to the ONUs in different groups, the uplink bandwidths being used to send registration information by the ONUs to be registered.

Abstract: A ranging method for an optical network, an OLT, an ONU, and an optical network system are provided. The OLT sends a bandwidth allocation message to the ONU; an OLT receiving a response message sent by an ONU in a first sending mode, wherein the first sending mode comprises sending power and a transmission rate; and the OLT performs ranging on the ONU according to the response message.

Abstract: An embodiment of the present disclosure provides a visual real-time interaction method for software defined networking (SDN). According to this method, a visual interface is established for the SDN. The visual interface includes at least one first node indicative of a port of a switch and at least one second node indicative of a port of a service provider. The first node and the second node are distributed on at least one stack hub. A connection is established between the first node and the second node. The connection has a curvature different from a curvature of the stack hub, and at least an extension line of the connection intersects with the stack hub. A location corresponding to the port of the switch and a location corresponding to the port of the service provider and an attribute of the connection are determined according to the connection.

Abstract: A method and a device for establishing channels for PON are disclosed. The method is applied to an ONU side and comprises: sending, after receiving a registration message sent from an OLT, a message responding to the registration message to the OLT, wherein the message responding to the registration message includes first parameter information for defining self uniqueness or includes combined information composed of self-first parameter information and second parameter information configured by the OLT, and the first parameter information and the combined information is used for defining a binding relationship for establishing multiple channels with the OLT; and completing the establishment of channels according to a channel use command sent from the OLT, wherein the channel use command comprises multiple pieces of channel identification information allocated by the OLT.

Abstract: Provided are a method for managing an ONU in a passive optical network, an OLT and a system. The method includes determining a first quiet window and a second quiet window, and allocating the first quiet window to an ONU within a first preset distance range and allocating the second quiet window to an ONU within a second preset distance range, where the distance between the optical line terminal (OLT) and the ONU within the first preset distance range is less than the distance between the OLT and the ONU within the second preset distance range.

Abstract: A method for implementing a variable optical splitter and a variable optical splitter are provided. The method includes that: the variable optical splitter is divided into one or more virtual optical splitting units according to wavelengths/wavebands of optical signals, wherein the virtual optical splitting units and the wavelengths/wavebands are in a one-to-one correspondence, and moreover, the wavelengths/wavebands and splitting ratios are also in a one-to-one correspondence; and optical guiding or optical splitting is performed on the incident optical signals through the virtual optical splitting units. By adopting the technical solutions provided by the present disclosure, the technical problems that there is yet no optical splitter with a variable splitting ratio in the related technology and the like are solved, and controllability of the splitting ratios of the optical splitter is achieved.

Abstract: An embodiment of the present disclosure provides a visual real-time interaction method for software defined networking (SDN). According to this method, a visual interface is established for the SDN. The visual interface includes at least one first node indicative of a port of a switch and at least one second node indicative of a port of a service provider. The first node and the second node are distributed on at least one stack hub. A connection is established between the first node and the second node. The connection has a curvature different from a curvature of the stack hub, and at least an extension line of the connection intersects with the stack hub. A location corresponding to the port of the switch and a location corresponding to the port of the service provider and an attribute of the connection are determined according to the connection.

Abstract: A data transmission and reception method and device are provided. The data transmission method includes: determining wavelength channels for data to be transmitted according to received wavelength channel information of an optical network unit (ONU); dividing the data to be transmitted in a sequence according to the number of the wavelength channels to obtain data packets; identifying the data packets according to the division sequence to obtain sequence identifiers of the data packets; and encapsulating the data packets into downstream frames of the wavelength channels in a one-to-one correspondence according to the sequence identifiers of the data packets, and transmitting the downstream frames of the wavelength channels separately to the ONU.

Abstract: Provided are a method for managing an ONU in a passive optical network, an OLT and a system. The method includes determining a first quiet window and a second quiet window, and allocating the first quiet window to an ONU within a first preset distance range and allocating the second quiet window to an ONU within a second preset distance range, where the distance between the optical line terminal (OLT) and the ONU within the first preset distance range is less than the distance between the OLT and the ONU within the second preset distance range.

Abstract: A method and a device for establishing channels for PON are disclosed. The method is applied to an ONU side and comprises: sending, after receiving a registration message sent from an OLT, a message responding to the registration message to the OLT, wherein the message responding to the registration message includes first parameter information for defining self uniqueness or includes combined information composed of self-first parameter information and second parameter information configured by the OLT, and the first parameter information and the combined information is used for defining a binding relationship for establishing multiple channels with the OLT; and completing the establishment of channels according to a channel use command sent from the OLT, wherein the channel use command comprises multiple pieces of channel identification information allocated by the OLT.

Abstract: An apparatus includes an integrated circuit, a plurality of bi-directional pins, and an electro-static discharge (ESD) clamp. The integrated circuit is configured to provide a ground potential. The plurality of bi-directional pins are configured to provide a differential input signal for the integrated circuit. The electro-static discharge (ESD) clamp is coupled between the ground potential and the plurality of bi-directional pins.

Abstract: A data transmission and reception method and device are provided. The data transmission method includes: determining wavelength channels for data to be transmitted according to received wavelength channel information of an optical network unit (ONU); dividing the data to be transmitted in a sequence according to the number of the wavelength channels to obtain data packets; identifying the data packets according to the division sequence to obtain sequence identifiers of the data packets; and encapsulating the data packets into downstream frames of the wavelength channels in a one-to-one correspondence according to the sequence identifiers of the data packets, and transmitting the downstream frames of the wavelength channels separately to the ONU.

Abstract: Provided are an ion air supply module needle net layout method and an ion air supply module. The layout method comprises: step 1, a wind speed test: adjusting a distance between a single discharge needle and a metal net, so that an ion wind speed at the wind speed central point position of the metal net is at the maximum, and measuring a distance value L between a tip of the discharge needle and the metal net; step 2, a projection radius measurement: measuring a wind speed Vr deviating from the wind speed central point position, and when Vr=aVmax, measuring that the distance between a wind speed measurement point and a wind speed central point is r; and step 3, a needle net layout: setting the distance between the tip of the discharge needle and the metal net to be within the range of (0.7-1.3)L, with the distance between tips of two adjacent discharge needles being within the range of (0.7-1.3)r.

Abstract: The present disclosure discloses a method and an apparatus for implementing registration. The method includes: tuning, by optical network units (ONUs), own reception wavelengths to a downlink wavelength corresponding to any one of time-wavelength division multiplexing (TWDM) channels; and receiving, from optical line terminals (OLTs) by the ONUs, downlink frames containing operator information, judging that the operator information in the received downlink frames is same as operator information preconfigured in the ONUs, searching for an uplink wavelength corresponding to a current received wavelength in a corresponding relationship between the uplink wavelength and the downlink wavelength received from the OLTs, and tuning own uplink wavelengths to the searched uplink wavelength for registration.