Huawei Technologies Co., Limited

Future Wei Technologies, Inc.

Shenzhen Yinwang Intelligent Technologies Co., Ltd.

Xingxin Zhang

Xuehuan Wang

George Calcev

Lin Cai

Pengxin Bao

Chao Li

Xun Yang

Tianyu Wu

Menghong Liu

Bo Wang

Hang Liu

Jie Sun

Jianjun Yang

Chunhui Zhu

Kaidi Huang

Qingyong Chen

Chenggang Jiang

Jiu Yin

Jiasong Ning

This disclosure discloses image transmission methods and apparatuses. In an implementation, a method performed by an apparatus includes generating a first data packet, wherein the first data packet comprises a portion of content of a frame of an image and first information indicating frame synchronization and line synchronization and sending the first data packet to a second communications apparatus.

Image transmission method and apparatus

A resource configuration method includes: determining a first time-frequency resource used by at least one second apparatus; determining a target time-frequency resource used by the at least one second apparatus; and sending first information, where the first information is used to indicate at least one of a first time domain resource offset and a first frequency domain resource offset, the first time domain resource offset is an offset from the first time-frequency resource to the target time-frequency resource in time domain, or the first frequency domain resource offset is an offset from the first time-frequency resource to the target time-frequency resource in frequency domain.

Resource configuration method and apparatus

A data transmission method according to an I2C protocol and a transmission apparatus includes: a first transmission chip obtains I2C data from a first device, wherein the I2C data is data sent by the first device to a second device. The first transmission chip sends first feedback information to the first device, wherein the first feedback information is used to indicate whether the I2C data is successfully received. The first transmission chip forwards the I2C data to a second transmission chip corresponding to the second device. The first transmission chip receives second feedback information from the second transmission chip, and the second feedback information is used to indicate whether the I2C data is successfully received. The first transmission chip stores the second feedback information in a first storage space that is storage space of the first transmission chip.

Data transmission method according to inter-integrated circuit protocol and transmission apparatus

A control method includes, after determining a target device to be controlled, a host sends indication information, a control command, and an address of a register of the target device to a control device through an Inter-Integrated Circuit (I2C) interface, so that the control device encapsulates the indication information, the control command, and the address of the register of the target device, and sends the indication information, the control command, and the address of the register of the target device that are encapsulated to a slave device connected to the control device.

Control method and apparatus

This application provides an in-vehicle communications system used in a vehicle. The in-vehicle communications system includes a control device, a plurality of gateway devices, and a plurality of communication endpoints. Each gateway device is communicatively coupled to the control device, and each gateway device is communicatively coupled to at least two other gateway devices. Each gateway device is further communicatively coupled to at least one communication endpoint. A gateway device or a controller is configured to: when receiving communication data of end-to-end communication, route the communication data by using a first communication link indicated by a local routing policy, and if the first communication link is abnormal, route a part or all of the communication data by using a second communication link. The system may be used in the field of assisted driving and self-driving.

In-vehicle communications system, in-vehicle communication method, and device

Embodiments of this application disclose a data processing method, which can be applied to a clock synchronization network system. The system can correct, based on a clock frequency error or a time error, a data timestamp of a data packet collected by the system in a time period in which there is no reference clock, so that a corrected system time of the data packet is consistent with a reference time. This improves accuracy of data record.

Data processing method and apparatus

Embodiments of this application disclose a data transmission method and a communications apparatus. A method in an embodiment includes: sending, by a network device, first data to a terminal in a first subframe through a first channel, where the first channel is a channel occupied in a channel system by a service between the network device and the terminal; performing, by the network device, channel listening on a channel that is not occupied in the channel system by the service; and when there is a second channel in an idle state, sending, by the network device, second data of the service to the terminal in a second subframe through the first channel and the second channel, where the second subframe is after the first subframe. The service includes the first data and the second data, and a data frame of the service includes the first subframe and the second subframe.

Data transmission method and communications apparatus

Embodiments of the present application disclose a modulation method, including: performing coding processing on raw data to obtain a coded sequence; performing constellation mapping on the coded sequence based on a preset constellation diagram, to obtain M symbols; dividing the M symbols into N segments; obtaining a constellation phase of each symbol in the N segments; adjusting a constellation phase of a symbol in each of the N segments according to a preset phase adjustment rule, where the N segments are concurrently adjusted; and modulating M symbols obtained through phase adjustment, to obtain a modulated signal, and sending the modulated signal. Correspondingly, this application further provides a demodulation method, a sending device, a receiving device, and a communications system.

Modulation method, demodulation method, related device, and system

A system and method of ANQP querying using a common ANQP group version. One embodiment of the method includes associating an original common ANQP group version with a common ANQP group, transmitting a message containing the original common ANQP group version to at least one station, associating a new common ANQP group version with the common ANQP group when an element therein is changed, and transmitting another message containing the new common ANQP group version to the at least one station.

System and method of ANQP querying using a common ANQP group version

Embodiments of the present invention disclose a method and an apparatus for retrieving transmission opportunity control in reverse direction grant. The method includes: obtaining, by a reverse direction responder (RD responder), a TXOP control from a reverse direction initiator (RD initiator); enabling, by the RD responder, a multi-user multiple-input multiple-output (MU-MIMO) mode; sending, by the RD responder, a frame to a plurality of stations concurrently in a TXOP period, the plurality of stations comprise the RD initiator; wherein the frame carries information that only requires the RD initiator to send back only a single acknowledgement in the TXOP period to return the TXOP control.

Method and apparatus for retrieving a transmission opportunity control in reverse direction grant

Embodiments of the present invention provide a network offload method and apparatus, where the method includes: receiving, by a first network controller, network state information of a terminal, where there is at least one terminal, the network state information is state information of the terminal on at least one corresponding access network, and the first network controller is a network controller of a first access network; generating, by the first network controller, an offload policy for the terminal according to the network state information; and sending, by the first network controller, the offload policy to the terminal; and/or sending the offload policy to an access device of the at least one access network, so that a network-side device or the terminal performs offload according to the offload policy and the network side can implement control on terminal offloading.

Network offload method and apparatus

An extension to the Access Network Query Protocol (ANQP) protocol allows stations (STAs) to discover multiple APs via a single ANQP request/response exchange. A STA can send a single ANQP request message to request information for multiple APs, e.g., two or more neighboring APs. The receiving AP may retrieve discovery information for one or more neighboring APs, and send an AP response message including the retrieved discovery information to the requesting STA. The ANQP request message identify the multiple APs for which discovery information is sought, and may specify which information is being requested for that corresponding AP.

System and method for efficient access network query protocol (ANQP) discovery of multiple access points (APs)

A method embodiment includes receiving, by an access point (AP), a request for an access network query protocol (ANQP) element, and multicasting the ANQP element as an ANQP information element (IE), wherein the ANQP IE is configured in accordance with a format transmittable by the AP in a multicast.

System and method for adaptive access network query protocol (ANQP) element provisioning

When an access point notifies a user equipment of a communications network supported by the access point, the access point also notifies the user equipment of priority information of the access point, so that the user equipment can select an access point that an operator expects the UE to select, to be connected to the communications network, thereby avoiding inconsistency between an access point, which is randomly selected by the user equipment to be connected to a communications network, and an access point that a communications network operator expects the UE to select.

Growing community of inventors

Chengdu, China

Xingxin Zhang