Abstract: An anchoring device for adapting to tide level for a wave energy power generation device comprises: a housing, wherein a central main shaft is provided at the center thereof, two ends of the central main shaft are respectively rigidly connected to a volute spring, and the interior of the housing is divided into several independent compartments, including a central compartment accommodating the central main shaft; a shaft lock and a central main gear capable of driving the central main shaft to rotate mounted on the central main shaft; and a plurality of hoisting wheel compartments arranged at equal intervals in a circumferential array around the central main shaft. A hoisting wheel is provided in each of the hoisting wheel compartments, and an anchor chain wound on the hoisting wheel protrudes out of the housing through an opening at the bottom of the hoisting wheel compartment.

Abstract: Communication methods and devices include opening a plurality of detection windows according to a preset detection period; in response to having detected a preamble of a radio frame in at least a preset number of continuous detection windows of the plurality of detection windows, switching the receiving end device to an awake state; and receiving the radio frame while the receiving end device is operating in the awake state.

Abstract: The present disclosure provides a quantum dot particle aggregate and a preparation method therefor, a preparation method for a light conversion device, and quantum dot particles. The preparation method for the quantum dot particle aggregate includes: mixing a plurality of first polymer particles, a first quantum dot solution and a second polymer solution, and drying to obtain an aggregate containing a plurality of quantum dot particles A, where each of the quantum dot particles A includes a core of a first polymer particle and a shell of a second polymer formed by the second polymer, a plurality of first quantum dots are positioned in the shell of the second polymer, and the first polymer particle has a minimum dimension greater than or equal to 0.3 mm. The process reduces the damage to quantum dots and can prolong the life time of application products of quantum dots.

Abstract: Embodiments of the present disclosure provide methods and devices for communication by a terminal. The method can include: sending, by the terminal, a first data frame to a relay device in a first mode, the first data frame comprising a first preamble and a first message information set, and the first preamble being used to wake up the relay device; sending, by the terminal, a second data frame to the relay device in the first mode, the second data frame comprising a second preamble and a second information set, the second data frame being sent after the terminal has sent the first data frame and a first time interval has elapsed, and the length of the second preamble being less than that of the first preamble; and receiving, by the terminal, a third data frame sent by the relay device in the first mode, the third data frame being sent to the terminal after being received from the base station by the relay device.

Abstract: Embodiments of the present application provide a method and apparatus of communication between a terminal and a base station. The communication method between a terminal and a base station performed by the terminal includes: sending, by the terminal, a network access request frame with a first preamble to a relay device. The relay device may be configured to receive the network access request frame according to the first preamble, send the network access request frame with a second preamble to the base station, and receive a network access response frame returned by the base station. The length of the second preamble may be smaller than that of the first preamble. The communication method may further includes receiving, by the terminal, the network access response frame sent by the relay device.

Abstract: The frequency band of an uplink channel of the first node is identical to the frequency band of a downlink channel of the second node. The frequency band of the uplink channel of the first node is different from the frequency band of a downlink channel of the first node. Uplink data from the terminal is received through the uplink channel of the first node; when the terminal is an intra-frequency terminal, downlink data is transmitted to the terminal through the downlink channel of the second node; and when the terminal is an inter-frequency terminal, downlink data is transmitted to the terminal through the downlink channel of the first node. The wireless communication method is compatible with intra-frequency terminals and inter-frequency terminals, and the inter-frequency terminal transmits uplink data through the first node and receive downlink data through the second node, thus implementing duplex communication and improving communication efficiency.

Abstract: A method including a network configuration device acquiring at least one channel including at least one of the following channels: a target channel and at least one initial channel, wherein the target channel is a channel used when the network distribution device is connected to a hotspot successfully; the network configuration device sending a request message to the network distribution device through the at least one channel; and the network configuration device determining, in the case of receiving a response packet, network state information of the network distribution device based on the response packet, wherein the network distribution device feeds back the response packet based on the request message. The present disclosure has solved the technical problem in the conventional techniques that users fail to determine whether the network distribution device has accessed a network successfully when the network distribution device is accessing the network.

Abstract: Data transmission methods, apparatuses, base stations, and servers are provided, and relate to the field of the Internet of things. A data transmission method includes determining a system time difference between a first base station and a second base station based on an actual transmission time length of a wireless frame; modifying a sending time of first data according to the system time difference, the sending time of the first data being determined according to a receiving time of second data at the first base station; and sending the first data from the second base station according to the modified sending time of the first data. The present disclosure can reduce the data transmission cost, and improves the reliability of data transmission.

Abstract: Embodiments of the present disclosure provide methods and devices for communication by a terminal.

Abstract: Embodiments of the present disclosure provide methods and devices for communication by a terminal. The method can include: sending, by the terminal, a first data frame to a relay device in a first mode, the first data frame comprising a first preamble and a first message information set, and the first preamble being used to wake up the relay device; sending, by the terminal, a second data frame to the relay device in the first mode, the second data frame comprising a second preamble and a second information set, the second data frame being sent after the terminal has sent the first data frame and a first time interval has elapsed, and the length of the second preamble being less than that of the first preamble; and receiving, by the terminal, a third data frame sent by the relay device in the first mode, the third data frame being sent to the terminal after being received from the base station by the relay device.

Abstract: Communication between a terminal and a base station, and network access methods and apparatuses for a terminal are provided. The communication between the terminal and the base station includes: the terminal sending a network access request frame with a first preamble to a relay device, the relay device being configured to receive the network access request frame according to the first preamble, send the network access request frame with a second preamble to the base station, and receive a network access response frame returned by the base station, a length of the second preamble being smaller than a length of the first preamble; and the terminal receiving the network access response frame sent by the relay device.

Abstract: Embodiments of the present disclosure provide a communication method and a communication apparatus. The method incudes acquiring, from a preset public network access channel, unique network identification information of a region where the terminal is located; determining a spectrum standard corresponding to the region where the terminal is located according to the public network access channel and the unique network identification information; and communicating according to the spectrum standard.

Abstract: The present application discloses communication methods and systems. The communication method includes: receiving a first uplink data frame from a terminal operating in a second mode, wherein the first uplink data frame comprises a first mode identifier and a terminal identifier, and the first mode identifier is used to indicate to a base station that the terminal is operating in a first mode; determining that the terminal operates in the second mode, according to a first information set and the terminal identifier; sending the first uplink data frame to the base station; receiving a first downlink data frame from the base station; and forwarding the first downlink data frame to the terminal.

Abstract: Embodiments of the present disclosure provide communication methods and devices. The method can include opening a plurality of detection windows according to a preset detection period; in response to having detected a preamble of a radio frame in at least a preset number of continuous detection windows of the plurality of detection windows, switching the receiving end device to an awake state; and receiving the radio frame while the receiving end device is operating in the awake state.

Abstract: Embodiments of the present application provide a method and apparatus of communication between a terminal and a base station. The communication method between a terminal and a base station performed by the terminal includes: sending, by the terminal, a network access request frame with a first preamble to a relay device. The relay device may be configured to receive the network access request frame according to the first preamble, send the network access request frame with a second preamble to the base station, and receive a network access response frame returned by the base station. The length of the second preamble may be smaller than that of the first preamble. The communication method may further includes receiving, by the terminal, the network access response frame sent by the relay device.

Abstract: The present application discloses a communication method performed by a relay device. The method includes: receiving a first uplink data frame from a terminal, the first uplink data frame comprising information indicating a first period; determining a length of a first preamble according to the first period and a first time length, the first time length being equal to a length of a third preamble plus a second time length; sending a second downlink data frame to the terminal, the second downlink data frame comprising the first preamble; and receiving a first downlink data frame from a base station, the first downlink data frame comprising a second preamble, wherein a length of the second preamble is less than or equal to each of the length of the first preamble and the length of the third preamble.

Abstract: The present disclosure provides a terminal, a base station and methods for communications between the terminal and the base station, and for the terminal to access a network. According to one exemplary method, a terminal sends a first message to a base station via a first channel, the first message being used to request access to a network. The terminal receives a second message from a first base station via a second channel, the second message including channel plan information for determining a first network connection plan. The terminal determines the first network connection plan according to the channel plan information and accesses the network via a second base station according to the first network connection plan. Channel use plan of the base station can be obtained through signaling interactions in the process of network connection. The terminal can determine whether the network can be accessed and access the network accordingly.

Abstract: Communication between a terminal and a base station, and network access methods and apparatuses for a terminal are provided. The communication between the terminal and the base station includes: the terminal sending a network access request frame with a first preamble to a relay device, the relay device being configured to receive the network access request frame according to the first preamble, send the network access request frame with a second preamble to the base station, and receive a network access response frame returned by the base station, a length of the second preamble being smaller than a length of the first preamble; and the terminal receiving the network access response frame sent by the relay device.

Abstract: The frequency band of an uplink channel of the first node is identical to the frequency band of a downlink channel of the second node. The frequency band of the uplink channel of the first node is different from the frequency band of a downlink channel of the first node. Uplink data from the terminal is received through the uplink channel of the first node; when the terminal is an intra-frequency terminal, downlink data is transmitted to the terminal through the downlink channel of the second node; and when the terminal is an inter-frequency terminal, downlink data is transmitted to the terminal through the downlink channel of the first node. The wireless communication method is compatible with intra-frequency terminals and inter-frequency terminals, and the inter-frequency terminal transmits uplink data through the first node and receive downlink data through the second node, thus implementing duplex communication and improving communication efficiency.

Abstract: A method including a network configuration device acquiring at least one channel including at least one of the following channels: a target channel and at least one initial channel, wherein the target channel is a channel used when the network distribution device is connected to a hotspot successfully; the network configuration device sending a request message to the network distribution device through the at least one channel; and the network configuration device determining, in the case of receiving a response packet, network state information of the network distribution device based on the response packet, wherein the network distribution device feeds back the response packet based on the request message. The present disclosure has solved the technical problem in the conventional techniques that users fail to determine whether the network distribution device has accessed a network successfully when the network distribution device is accessing the network.