Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Electric Power Research Institute, China Southern Power Grid

Guangdong Oppo Mobile Telecommumcations Corps., Ltd.

Koninklijke Philips Corporation N.v.

Shenzhen Heytap Technology Corp., Ltd.

Shenzhen Power Supply Co., Ltd

Bin Feng

Hai Tang

Ning Yang

Yanan Lin

Wenbo Zhu

Mingli Fu

Lei Jia

Xiaolin Li

Bin Zhang

Yunpeng Zhan

Shuai Hou

Baojun Hui

Yifan Zhang

Lingmeng Fan

Yongjie Nie

Jie Liu

Ming Cong

Xiao Chen

Guoxing Wu

Shu Xu

An antioxidant addition device for a 500 kV cross-linked polyethylene insulating material includes a heating hopper module and a heat-insulation conduit module. The heating hopper module includes an inlet port, a heating jacket, a material bin, and a filter screen. The heat-insulation conduit module includes a liquid metering pump, a stainless steel liquid-conduit, a heat-insulation unit, and an outlet port. The antioxidant is added into the material bin through the inlet port, heated in the material bin to a liquid phase antioxidant, filtered through the filter screen, then metered by the liquid metering pump, then passed into the stainless steel liquid-conduit, and finally discharged through the outlet port for use.

Antioxidant addition device and method for 500 kV cross-linked polyethylene insulating material

The present application provides a high-voltage cable insulation material continuous extrusion processing characteristic evaluation and optimization method and apparatus. The method comprises: continuously extruding a material under test as a melt, measuring and recording an inlet pressure P, a mass growth rate w, and the diameter D' of a melt sample strip, and obtaining apparent shear viscosity η(t) (step A1); obtaining an outlet expansion rate δ (step A2); recording and displaying curves η(t) and δ(t), and treating the time corresponding to an increase of a set percentage on the curves as a cross-linking starting time TX (step A3); selecting a reference sample for testing, and determining a cross-linking reaction starting time TS according to η(t) and δ(t) curves of the reference sample (step A4); and defining an index α according to Tx and Ts.

High-voltage cable insulation material continuous extrusion processing characteristic evaluation and optimization method and apparatus

Provided is a radio-frequency Power Amplifier Modules including Duplexers (PA Mid) device. The radio-frequency PA Mid device has a coupling output port (CPLOUT), a coupling input port (CPLIN), and an antenna port (ANT). The radio-frequency PA Mid device includes: a transceiving circuit () configured to support transceiving control of a radio-frequency signal; a coupling unit () including an input port (a), an output port (b), a first coupling port (c) configured to couple the radio-frequency signal and output a forward coupled signal, and a second coupling port (d) configured to couple a reflected signal of the radio-frequency signal and output a reverse coupled signal; and a coupling switch () configured to selectively output, via the coupling output port (CPLOUT), the forward coupled signal, the reverse coupled signal, or an external coupled signal received via the coupling input port (CPLIN).

Radio-frequency PA Mid device, radio-frequency system and communication device

Provided are a radio communication method and device. The radio communication method comprises: in a first time interval, first network equipment receives a first request message transmitted by terminal equipment and requesting the first network equipment to establish or recover a radio bearer for the terminal equipment; the first network equipment acquires, according to the first request message, context information of the terminal equipment, wherein the context information of the terminal equipment is stored in management equipment, the context information of the terminal equipment is sent to the management equipment and transmitted from a second network equipment to the management equipment, and the second network equipment is the last network equipment generating or updating, before the first interval, the context information of the terminal equipment, and the first network equipment establishes or recovers, according to the context information of the terminal equipment, the radio bearer for the terminal equipment. The embodiment can reduce required transmission resources and signaling overhead, reducing costs of constructing a network.

Radio communication method and device

The present invention provides a polypropylene cable protective layer and a preparation method thereof. The polypropylene cable protective layer sequentially includes a dielectric layer, a buffer layer and an insulating layer from the inside to the outside, and the thickness of the dielectric layer accounts for 5%˜12% of the thickness of the polypropylene cable protective layer; the thickness of the buffer layer accounts for 17%˜25% of the thickness of the polypropylene cable protective layer; the dielectric layer, the buffer layer and the insulating layer are respectively obtained by the wrapping of a polypropylene film A, a polypropylene film B and a polypropylene film C. The polypropylene cable protective layer of the present invention forms a dielectric gradient, and realizes the improvement of the insulation strength and voltage level of the power cable, and the increase of the transmission capability.

Polypropylene cable protective layer and preparation method thereof

A method and equipment for regulating a communication parameter are provided. The method includes that: a first equipment establishes a communication with a second equipment according to a preset configuration of a Cyclic Prefix (CP) length; the first equipment regulates the configuration of the CP length according to a network state and/or service state in a communication process; and the first equipment sends CP length regulation indication information to the second equipment, the CP length regulation indication information indicating a result of regulation performed by the first equipment on the configuration of the CP length; wherein the first equipment is network equipment, and the second equipment is terminal equipment.

Method and apparatus for regulating communication parameters

A method and device for transmitting a service are provided, which comprises: when a requirement of the service changes, the network apparatus instructs, via a control signaling, the mobile station to replace the first resource allocation parameter set with a second resource allocation parameter set in a SPS manner, and the first resource allocation parameter set is used to transmit a first service which is being transmitted.

Method, mobile station, and network apparatus for transmitting service

A method and apparatus for establishing a connection are provided. The method includes: terminal equipment determines a connection establishment request format adopted when a connection establishment request message is sent from multiple connection establishment request formats; and the terminal equipment sends the connection establishment request message to network equipment according to the determined connection establishment request format. In such a manner, rapid connection establishment for different service requirements in multiple environments may be adapted.

Method and apparatus for establishing connection

A carrier switching method, a terminal and a base station are provided. According to the method, a carrier set sharing the same set of system information is set, and the base station switches to a new carrier belonging to the same carrier set with an old carrier, and indicates, through signaling, the terminal to perform carrier switching and perform necessary frequency and bandwidth adjustment in case of interference to an operating frequency.

Carrier switching method, terminal and base station

The embodiments of the invention disclose a data transmission method comprising: a base station receives terminal information transmitted by terminal equipment; the base station determines, according to the terminal information, that the terminal equipment is able to communicate with the base station via a first relay node; and the base station transmits to the terminal equipment a first notification message to, instruct the terminal equipment to communicate with the base station via the first relay node. In the embodiment of the invention, the base station can instruct the terminal equipment to switch from a cellular link to a sidelink passing through the first relay node, thereby ensuring communication quality between the terminal equipment and the base station.

Data transmission method, base station, and terminal equipment

A service transmission method and apparatus are provided. The method includes: a first mobile station acquiring N resource allocation parameter sets from a network device; the first mobile station sending first indication information to the network device, where the first indication information is used to indicate service information about a first service needing to be transmitted by the first mobile station; the first mobile station receiving second indication information sent by the network device, where the second indication information is used to indicate a first target resource; and the first mobile station determining, from the N resource allocation parameter sets, a first resource allocation parameter set adapted to the service information about the first service, and the first mobile station transmitting, according to the first resource allocation parameter set, the first service using the first target resource.

Service transmission method and apparatus

The embodiments of the application provide a communication method, terminal equipment, and network equipment. The method comprises: determining a first data transmission format used to generate first transmission version of uplink data; selecting, from a data resource pool, a first data transmission resource used to transmit the first transmission version; transmitting, to network equipment, a first scheduling configuration message containing information of the first data transmission resource and the first data transmission format; encoding and modulating, according to the first data transmission format, the uplink data, to generate the first transmission version; and transmitting, to the network equipment, by means of the first data transmission resource, the first transmission version, so as to facilitate the network equipment to receive, demodulate and decode, according to the first scheduling configuration message, the first transmission version. The embodiments of the invention can reduce communication latency without decreasing communication reliability.

Communication method, terminal equipment, and network equipment

Provided are a method and device for transmitting data in an Internet of Vehicles system. The method comprises: establishing, by a terminal device, a radio resource connection with a network device belonging to a found service cell, the network device being deployed by a first operator; receiving, by the terminal device, information of a second operator transmitted by the network device, the information of the second operator comprises at least one of identifier information and frequency resource information; receiving, by the terminal device, data transmitted by the first operator, and/or, receiving, by the terminal device, and according to the information of the second operator, data transmitted by the second operator. The invention realizes access by a terminal device, and ensures that the terminal device timely acquires information of other operators in a network, thereby enabling the terminal device to simultaneously transmit data to or receive data from multiple operator networks.

Method and device for transmitting data in internet of vehicles system

Disclosed in the present invention are data transmitting method, a terminal and a base station. Provided is as feasible method for transmitting feedback information under the scenario in which a unlicensed carrier works independently, and in which the feedback information corresponding to a plurality of time limits for downlink transmission are transmitted within a time unit for uplink transmission, thereby improving the efficiency of feedback.

Growing community of inventors

Dongguan, China

Bin Feng