Huawei Technologies Co., Limited

Other

Beijing Jingshi Intellectual Property Management Co., Ltd

Huang Huang

Mao Yan

Kuandong Gao

Hua Shao

Sainan Li

Gao Xiang

Yalin Liu

Guangjian Wang

Lei Chen

Xiaoyong Tang

Fengwei Liu

Xi Yan

Qianli Ma

Kunpeng Liu

Yi Bin Wang

Xi Zhang

Minghui Xu

Kun Zeng

Lanjie Yuan

Zhe Liu

Peng Guan

Qiqi Mao

Wenxian Jiang

Jiebo Yuan

Enzhi Zhou

Xianfeng Du

Wen Tong

Xinghua Song

Yinggang Du

Huangping Jin

Rongdao Yu

Jian Li

Ye Wu

Xiaoyan Bi

Shitong Yuan

Hongzhe Shi

Sergio Benedetto

Guido Montorsi

Bo Fan

Lei Huang

Yuanzhou Hu

Jia He

Xiaona Wang

Kin Nang Lau

Rong Wen

Nuwan Suresh Ferdinand

Yi Wang

Huajiong Lin

Ziming Yu

Qi Feng

Kinnang Lau

Eddy Chiu

Fan Wen

Embodiments of this application provide a communication method and apparatus. In the method, the first communication apparatus may receive a first message, where the first message includes information about an expansion factor. The first communication apparatus determines a quantity of information bits based on the expansion factor, generates a to-be-sent signal based on the quantity of information bits; and transmits the to-be-sent signal. During communication, the communication apparatus uses the expansion factor in transmission, so that the quantity of information bits transmitted in a filter can be increased, to ensure high spectrum utilization and high data transmission efficiency.

Communication method and apparatus

This application provides initial access methods and apparatuses. One method includes: detecting, in M synchronization signal blocks (SSBs) sent by a network device, one or more first SSBs, wherein the M SSBs are sent at a same time on different frequencies, the M SSBs comprise N first SSBs located in a synchronization raster, where N is a positive integer, and sending a random access signal to the network device based on frequency domain positions of the detected one or more SSBs in the M SSBs or in the N first SSBs.

Initial access method and apparatus

Methods, apparatuses, and storage media for transmitting a system information block are described. In an example implementation, a network device sends indication information to a terminal device. The terminal device determines a period of periodic transmission of a system information block (SIB) based on the received indication information, and receives, based on the period, a SIBsent by the network device. Alternatively, the terminal device determines a transmission location of aperiodic transmission of a system transport block based on the indication information, and receives, at the indicated transmission location, a SIBsent by the network device.

Method for transmitting system information block, apparatus, and storage medium

A backscatter communication method and apparatus provides operation including: receiving a first excitation signal from a first device; determining a first resource based on a candidate resource; and sending a backscattered signal of the first excitation signal to a second device based on the first resource. This can reduce a probability of selecting a same resource as another device to some extent, so that a conflict is reduced, and an access success rate of a backscatter device can be improved.

Backscatter communication method and apparatus

In accordance with an embodiment, a phase noise estimation method includes: obtaining, by a receive end, first information indicating a first parameter corresponding to interference information of a first phase tracking reference signal (PTRS), wherein the first parameter comprises one or more of a first phase set or a first amplitude set; obtaining, by the receive end, a first signal, wherein the first signal is determined based on the first parameter and the interference information of the first PTRS, wherein an amplitude of the first signal meets a first threshold; and determining, by the receive end based on the first information and the first signal, an estimated value of a phase noise corresponding to the first PTRS.

Phase noise estimation method, apparatus, and system

Aspects of the present application provide methods and devices for a phase tracking reference (PT-RS) scheme for use by a single carrier Offset QAM (SC-OQAM) transmitter and receiver to estimate, and correct, phase errors that occur over the communication link between the SC-OQAM transmitter and receiver. A transmitter may set the sign (positive or negative) of PT-RS symbols dynamically allowing the transmitter to better utilize IQ interference caused by data symbols and other PT-RS symbols. Another aspect of the present disclosure provides a receiver that can estimate phase error due to phase noise without knowing the sign of PT-RS symbol or the sign of IQ interference. This type of phase error estimation improves the phase noise estimation performance, and thus may improve the overall block error rate (BLER) performance at the receiver.

Methods and apparatus for using a phase tracking reference signal with a single carrier waveform

Embodiments of this application disclose a synchronization signal block determining method and a related apparatus. The method includes: A terminal device detects a first synchronization signal block (SSB); the terminal device determines a second SSB based on the first SSB, where a frequency domain position of the first SSB and a frequency domain position of the second SSB are within a preset bandwidth, or a difference between frequency domain positions of the first SSB and the second SSB is a preset value. The second SSB may be considered as a backup SSB for the first SSB.

Synchronization signal block determining method and related apparatus

This application relates to the field of communication technologies, and provides a communication method and apparatus, to improve demodulation performance. A first subcarrier spacing, a second subcarrier spacing, a cyclic prefix (CP) length of a first symbol, and a CP length of a second symbol are determined, where the first subcarrier spacing is K times the second subcarrier spacing, K is an integer greater than 1, and the CP length of the first symbol is greater than or equal to the CP length of the second symbol.

This application provides a signal transmission method and apparatus, a reflector, and a receiver. In one example method, a reflector receives W excitation signals, where W exciters may be configured to carry data and a reference signal that are reflected by the reflector; and the reflector reflects data and L reference signals to a receiver, where the L reference signals are respectively carried in L excitation signals in the W excitation signals, where W and L are both integers greater than or equal to 1, and L is less than or equal to W.

Signal transmission method and apparatus, reflector, and receiver

This application relates to the field of communication technologies, and discloses a communication method and apparatus. On example method includes: a backscatter device receives an excitation signal from an exciter. The backscatter device determines a backscatter signal pattern in a backscatter signal pattern set, where the backscatter signal pattern set includes a plurality of backscatter signal patterns, and backscatter reference signals in the plurality of backscatter signal patterns do not overlap in time domain. The backscatter device modulates a backscatter reference signal and a backscatter data signal on the excitation signal based on the determined backscatter signal pattern, to obtain a backscatter signal. The backscatter device sends the backscatter signal to a receiver.

Communication method and apparatus using a backscatter signal pattern

A method and an apparatus for transmitting a random access signal. The method includes receiving configuration information, wherein the configuration information indicates a random access preamble length, a random access signal subcarrier spacing, and a data subcarrier spacing, determining a subcarrier quantity parameterbased on at least one of the random access preamble length, the random access signal subcarrier spacing, or the data subcarrier spacing, generating a random access signal based on the subcarrier quantity parameter, and sending the random access signal.

Method and apparatus for transmitting random access signal

A symbol processing method and apparatus are provided. The method includes: obtaining, based on a plurality of complex-valued symbols, a first set corresponding to a first transmit symbol and a second set corresponding to a second transmit symbol; performing a copy operation on the first set and the second set, so that both the first set and the second set have a first complex-valued symbol; performing signal processing on the first set and the second set; and performing phase adjustment on the first transmit symbol and/or the second transmit symbol after the signal processing, to ensure that a symbol component whose end position is the first reference point in the first transmit symbol is the same as a symbol component whose end position is the second reference point in the second transmit symbol. This application can ensure that an inter-symbol guard period is flexibly configured.

Symbol processing method and apparatus

This application discloses a communications method and apparatus. The method includes: sending, by a terminal device, a first message to a network device, where the first message includes a first random access preamble and first data, and a first redundancy version is used for the first data; and determining, by the terminal device, that the first data fails to be sent, and retransmitting the first data, where a second redundancy version is used for the first data. The corresponding communications apparatus is further disclosed. An incremental redundancy manner is used in a retransmission procedure of random access data.

Communications method and apparatus

This application provides a random access preamble transmission method and an apparatus. In one example method, a terminal receives indication information, and may indicate, with reference to the indication information, whether a first path loss is the same as a second path loss, and determine the first path loss based on the second path loss. Then, the terminal may set, based on a path loss for transmitting a random access preamble between the terminal and a network device, a transmit power for sending the random access preamble.

Random access preamble transmission method and apparatus

The present disclosure relates to communication methods. One example method includes within a first discontinuous reception (DRX) cycle, starting, by a terminal device, a first timer (for example, a DRX inactivity timer (drx-InactivityTimer)) when a physical downlink control channel (PDCCH) indicates a new transmission. When the first timer expires at or after a time position for sending an indication signal, the terminal device does not receive the indication signal, where the time position is configured by a network device for the terminal device, and the indication signal is used to indicate the terminal device to sleep.

Growing community of inventors

Shenzhen, China

Huang Huang