Huawei Technologies Co., Limited

Rongdao Yu

Jun Wang

Sheng Liu

Yinggang Du

Rong Li

Rui Wang

Yunfei Qiao

Jian Wang

Jun Chen

Yingtao Li

Xiaoyan Bi

Yu Wang

Ying Chen

Jian Jun Wang

Yi Bin Wang

Bin Wang

Maosheng Huang

Hejia Luo

Gongzheng Zhang

Yalin Liu

Yong Xie

Kangmin Huang

Huimin Zhang

Dageng Chen

Tao Wu

Huang Huang

Huazi Zhang

Branislav M Popovic

Tong Li

Xueqiang Yan

Kin Nang Lau

Shengchen Dai

Ye Wu

Lu Rong

Chen Xu

Guangjian Wang

Yourui Huangfu

Wei Ye Chen

Tizheng Wang

Qi Li

Tianxiang Wang

Ross David Murch

Teyan Chen

Guijie Wang

Yongjun Liu

Sainan Li

Anahid Robert Safavi

Alberto Giuseppe Perotti

Weiwei Zhang

Heng Liao

Jie Jin

Xian Meng

Guangzhu Zeng

Shanxi Chen

Dawei Huo

Xiongbin Rao

Deli Qiao

Chuili Kong

Xu Li

An Ling Liu

Yibo Lv

Kinnang Lau

Saber Soltani

Huiqing Zhai

Zhihui Ma

Zhenhua Li

Changhong Liang

Eddy Chiu

Hua Liang

Guihong Li

A positioning method in a satellite network, a communication apparatus, a computer-readable storage medium, a program, and a program product are provided. The method includes: a terminal device receives a first broadcast signal block of a first satellite; obtains a measurement value of the first broadcast signal block; obtains positioning assistance information, from the first satellite, indicating a frequency and a polarization direction of the second satellite, where a frequency and/or a polarization direction of the first satellite are/is different from the frequency and the polarization direction of the second satellite; receives a second broadcast signal block of the second satellite based on the positioning assistance information; obtains a measurement value of the second broadcast signal block; and obtains location information of the terminal device based on the measurement value of the first broadcast signal block and the measurement value of the second broadcast signal block.

Positioning method and communication apparatus in satellite network

A hybrid automatic repeat request (HARQ) process disabling method, a receiving device, and a sending device in communication, the method including a receiving device obtaining indication data, where the indication data is used to indicate to disable a HARQ process, and the receiving device disabling the HARQ process.

HARQ process disabling method, receiving device, and sending device

The present disclosure relates to power control methods and apparatuses. In one example method, a first uplink transmit power for a terminal device communicating with a source network device is adjusted, based on a first parameter, to obtain a second uplink transmit power, where the second uplink transmit power is used to communicate with a target network device in a handover process.

Uplink power control method and apparatus during handover

User equipment receives at least one TAC that is broadcast by a network device, where the TAC includes geographical location information, and the geographical location information is used to indicate a geographical location of a preset location point in a TA corresponding to the TAC. The user equipment determines, based on the TAC and a tracking area list (TAL), whether the TAL needs to be updated. If it is determined that the TAL needs to be updated, the user equipment sends a tracking area update request to the network device. The user equipment receives a response message, of the tracking area update request, returned by the network device.

Satellite tracking area update method and related apparatus

This application relates to the field of wireless communications technologies, and discloses a satellite location information transmission method, and related apparatus, system, and storage medium. The method includes: receiving satellite location information sent by at least one satellite base station, where the satellite location indicates a location of a satellite base station in a satellite orbit; determining a target satellite base station among the at least one satellite base station based on the received satellite location information; and initiating a random access process to the target satellite base station. The technical solutions provided in the embodiments of this application can reduce UE power consumption.

Satellite location information transmission method, apparatus, system, and storage medium

A radio over fiber (RoF) system and a nonlinear compensation method, where the RoF system includes a BBU and an RRU, the RRU includes an electrical component, and the BBU includes a downlink and a feedback link. A predistortion module and an optical component are disposed on the downlink, an input end of the feedback link is connected to an output end of the optical component, and the feedback link is configured to feed back, to the predistortion module, a nonlinear signal output by the optical component. The RoF system further includes a temperature detection module configured to detect a temperature value of the electrical component, and transmit the temperature value to the predistortion module. The predistortion module is configured to perform digital predistortion DPD on a baseband signal based on the temperature value and the nonlinear signal.

Radio over fiber system and nonlinear compensation method

A data processing method for a data processing system having a first communications node and a second communications node where the first communications node corresponds to a first blockchain node and the second communications node corresponds to a second blockchain node that maintains a same block chain as the first blockchain node, the method including obtaining, by the first communications node, to-be-verified data when a terminal camps on a target cell, where the to-be-verified data is obtained based on camping information of the terminal, and the target cell is a cell within signal coverage of the first communications node sending, by the first communications node, the to-be-verified data to the second communications node, so that the second communications node verifies the to-be-verified data based on the second blockchain node, and obtaining, by the first communications node, a target block if the verification succeeds.

Data processing method and data processing device

Examples in this application disclose satellite network communication methods, communications apparatuses, and communications systems. One example method includes determining, by a user device, address information of the user device, where the address information includes a second sub-area identifier and a user device identifier (UDID) of the user device, and the second EID indicates a second sub-area which the user device is currently located in, and the second sub-area is one of a plurality of sub-areas divided from earth surface, and sending, by the user device, the address information to a first satellite.

Satellite network communication method, related apparatus, and system

This application provides encoding and decoding methods to reduce retransmission in satellite communication. A sending apparatus obtains an information transport block, where the information transport block includes a plurality of code blocks; and generates a redundant code block based on at least two of the plurality of code blocks. The at least two code blocks and the redundant code block are sent over a satellite channel after channel coding. A receiving apparatus receives the to-be-decoded information over the satellite channel, calculates, based on the to-be-decoded information of the at least two code blocks and the redundant code block, an a priori log-likelihood ratio of a to-be-decoded bit, and combines the a priori log-likelihood ratio and a log-likelihood ratio obtained after demodulation, to obtain a diversity gain. Decoding is performed based on the combined log-likelihood ratio. This method improves decoding accuracy and reduces the need for retransmission.

Satellite communication method and apparatus

The application provides a communication method, an apparatus, and a system that are used in a satellite network. A user terminal receives, on a management channel, a sounding signal sent by a management satellite. The management satellite manages one or more serving satellites. The user terminal sends a respiratory signal to the management satellite. The respiratory signal carries information about the user terminal. The information about the user terminal is used to determine information about a serving satellite that serves the user terminal. The management satellite or a ground station may uniformly schedule the serving satellite to serve the user terminal. When the serving satellite is switched, a negotiation between satellites may be omitted.

Communication method, apparatus, and system based on satellite network

This application provides a communication method based on orbital angular momentum (OAM) and a related apparatus. The method includes: determining OAM modes for at least two subframes of a radio frame, where at least one symbol is mapped to each subframe in the at least two subframes; and sending the at least two subframes, where there is an association relationship between the OAM modes corresponding to the subframes in the at least two subframes. Embodiments of this application are implemented to enhance an electromagnetic field, reduce signal fading, and improve a diversity effect.

Communication method based on orbital angular momentum and related apparatus

This application discloses an adaptive transmission method for satellite communication. First, a receive end determines a redundancy version index; second, the receive end feeds back a redundancy version index signal to a transmit end; then, the transmit end receives the redundancy version index fed back by the receive end, and performs operations such as demodulation and decoding on the redundancy version index signal, to obtain the redundancy version index; and then, the transmit end obtains a corresponding redundancy version combination based on the obtained redundancy version index; and finally, the transmit end selects a proper diversity mode for transmission based on the obtained redundancy version combination.

Adaptive transmission method for satellite communication, apparatus, and system

A data transmission method and a communications device, the method including: determining, by a first communications device, a target data transmission mode, where the target data transmission mode is used to indicate a quantity of times that the first communications device transmits an encoded-bit combination to a second communications device and an encoded-bit combination transmitted each time, the encoded-bit combination transmitted each time may include one encoded bit sequence or a plurality of encoded bit sequences, where the encoded bit sequence is obtained by encoding all or some of K information bits, and K is a positive integer, and sending, by the first communications device, the encoded-bit combination to the second communications device in the target data transmission mode, and receiving, by the second communications device, the encoded-bit combination sent by the first communications device, and decoding the encoded bit sequence included in the encoded-bit combination.

Data transmission method and communications device

A channel prediction method and a related device, where the method includes: obtaining a first channel coefficient sequence in a first time period, where the first channel coefficient sequence includes a plurality of complex values of a channel coefficient; and determining a prediction value of the channel coefficient in a second time period based on the first channel coefficient sequence and a preset vocabulary of channel changes, where the preset vocabulary of channel changes includes a mapping relationship between a channel change value index and each change value of the channel coefficient, and where the second time period is later than the first time period.

Channel prediction method and related device

A data processing method and a data processing apparatus are provided to reduce a bit error rate of a wireless communications system and improve transmission performance of the wireless communications system. The method includes: mapping L to-be-sent bits to L bit locations included in at least one modulation symbol, where the L to-be-sent bits include at least one bit field, a bit in a bit field having a high priority is preferentially mapped to a bit location that is of the at least one modulation symbol and that has a high reliability level, the at least one bit field is at least one of an information bit field, a first parity bit field, and a second parity bit field; and outputting the at least one modulation symbol.

Wireless communication data processing method and apparatus for reducing bit error rate

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Shenzhen, China

Rongdao Yu