Huawei Technologies Co., Limited

Future Wei Technologies, Inc.

Bingyu Qu

Lixia Xue

Hao Sun

Jianqin Liu

Weimin Xiao

Yongxing Zhou

Lei Guan

Kunpeng Liu

Philippe J Sartori

Chuanfeng He

Jialing Liu

Jiafeng Shao

Brian Keith Classon

Qiang Wu

Xu Zhang

Vipul Anil Desai

Qiang Li

Yan Cheng

Zheng Yu

Yufei W Blankenship

Yuanjie Li

Xiaodong Yang

Yang Li

Hossein Bagheri

Sha Ma

Lei Wan

Chaojun Li

Qian Cheng

Fredrik Berggren

Ruiqi Zhang

Qinghai Zeng

Jian Zhang

Wei Bai

Jianguo Wang

Xiaoyan Bi

Yong Liang Liu

Zhongfeng Li

Anthony C K Soong

Di Zhang

Junwei Wang

Hui Zhang

Mingxin Gong

Yujuan He

Xueru Li

Xuan Feng

Xianda Liu

Zhiyu Yan

Chao Luo

Deping Liu

Weijun Sun

Yi Wei

Shulan Feng

Leiming Zhang

Wei Jun Zhang

Feng Wang

Haibao Ren

Lu Rong

Junchao Li

Su Huang

Wenlin Zhang

Hao Hu

Yingtao Li

Hai Bo Zhang

Dan Hu

Weihua Liu

Xiang Chen

Wei Jin

Yingzhe Ding

Shengxi Pan

Feifei Gu

Qiang Cheng

Miao Zhao

Weimin Xieo

Philipp Sartori

Hossein Bagheeri

Classon Brain

Berggren Fredrik

A sequence-based signal processing method and apparatus are provided. A sequence meeting a requirement for sending a signal by using a physical uplink control channel (PUCCH) is determined. The sequence is a sequence {f} consisting of 12 elements, frepresents an element in the sequence {f}, and the determined sequence {f} is a sequence meeting a preset condition. Then, the 12 elements in the sequence {f} are respectively mapped to 12 subcarriers, to generate a first signal, and the first signal is sent. By using the determined sequence, when the signal is sent by using the PUCCH, a low correlation between sequences can be maintained, and a relatively small peak-to-average power ratio (PAPR) value and a relatively small cubic metric (CM) value can be maintained. Therefore, a requirement of a communication application environment in which the signal is sent by using the PUCCH is met.

Sequence-based signal processing method and apparatus

A communication method and apparatus are provided. The method includes: A terminal device determines a first sequence whose length is ΣK, and sends the first sequence on M subcarrier groups, where an isubcarrier group in the M subcarrier groups includes Ksubcarriers on a same symbol, i=0, 1, . . . , M−1, and frequency domain positions of subcarriers included in any two of the M subcarrier groups are different and belong to different symbols; and a sequence carried in each of the M subcarrier groups is a fragment of the first sequence, and fragments carried in any two subcarrier groups are different. According to the method, the terminal device sends the first sequence on the M subcarrier groups, so that interference between different terminal devices is small when channel estimation is performed by combining M symbols. This can effectively improve accuracy of channel estimation.

Communication method and apparatus

This application discloses a synchronization signal sending method and a related device. The method includes: generating, a first synchronization signal sequence and a second synchronization signal sequence, where the first synchronization signal sequence is a sequence obtained based on a first m-sequence, the second synchronization signal sequence is a sequence obtained based on a Gold sequence, the Gold sequence is generated based on a second m-sequence and a third m-sequence, and a generator polynomial of the first m-sequence is the same as a generator polynomial of the second m-sequence; mapping, the first synchronization signal sequence onto M subcarriers in a first time unit to obtain a first synchronization signal, and mapping the second synchronization signal sequence onto M subcarriers in a second time unit to obtain a second synchronization signal, where M and N are positive integers greater than 1.

Techniques for synchronization in wireless communications

An uplink transmission method and a communication apparatus. A terminal device receives first indication information indicating at least two uplink carriers to effectively reduce control signaling overheads. The terminal device sends uplink transmission on the at least two uplink carriers based on the first indication information. The uplink transmission is sent on the at least two uplink carriers in response to control signaling overheads being reduced. The use of the at least two uplink carriers increases an uplink capacity.

Uplink transmission method and communication apparatus

A communication method and a communications apparatus: A network device sends first signaling, where the first signaling is used to configure Kchannel state information-reference signal CSI-RS resources; a terminal device receives the first signaling, and reports channel state information CSI; and the network device receives the CSI, where the CSI includes a channel quality indicator CQI of a first codeword, a channel measurement part used to calculate the CQI of the first codeword is determined based on channel measurement results of KCSI-RS resources.

Communication method and communications apparatus

This application provides a sequence-based signal processing method and apparatus. A sequence used for sending a signal on a PUSCH is determined. The sequence is a sequence {x} including N elements, xis an element in the sequence {x}, and the determined sequence {x} is a sequence satisfying a preset condition. Then, a first signal is generated and sent. By using the determined sequence, when a signal is sent on the PUSCH, relatively good sequence frequency domain flatness can be maintained, and a relatively low PAPR value and a relatively low cross-correlation between sequences can be maintained, thereby satisfying a communications application environment in which a signal is sent on the PUSCH, especially an NR system scenario or an NR similar scenario.

Sequence-based signal processing method and signal processing apparatus

This application provides example reference signal (RS) transmission methods and example communication apparatuses. One example reference signal transmission method includes receiving, by a terminal device, first information in a first time unit, where the first information triggers the terminal device to transmit a RS. The terminal device can then transmit the RS in a second time unit, where the second time unit is indicated by a time offset indicator n in valid uplink transmission time units starting from the first time unit.

Reference signal transmission method and communication apparatus

This application provides a reference signal transmission method. The method includes: A transmit end determines a time-frequency resource occupied by a reference signal, where the time-frequency resource includes M symbols in time domain and N subcarriers corresponding to each of the M symbols in frequency domain, M is an integer greater than or equal to 2, and N is an integer greater than 1; the transmit end generates a reference signal sequence with a length of M×N, and maps the reference signal sequence to the time-frequency resource for sending; and accordingly, a receive end receives the reference signal on the time-frequency resource.

Reference signal transmission method and apparatus

A sequence-based signal processing method and apparatus are provided. A sequence meeting a requirement for sending a signal by using a physical uplink control channel (PUCCH) is determined, where the sequence is a sequence {f} consisting of N elements, fis an element in the sequence {f}, and the determined sequence {f} is a sequence meeting a preset condition; then, the N elements in the sequence {f} are respectively mapped to N subcarriers to generate a first signal; and the first signal is sent. By using the determined sequence, when a signal is sent by using a PUCCH, a low sequence correlation can be maintained, and a relatively small peak-to-average power ratio (PAPR) value and cubic metric (CM) value can also be maintained, thereby meeting a requirement of a communication application environment in which a signal is sent by using a PUCCH.

A method includes: determining a first sequence based on a first parameter, a second parameter, and a third parameter, where the first sequence is determined based on the third parameter and a second sequence, the second sequence is determined based on the first parameter and the second parameter, the first parameter and the second parameter are root indexes of the second sequence, and the third parameter is a time domain cyclic shift value; and sending a signal based on the first sequence.

Sequence-based signal transmission method and communication apparatus

Embodiments of the present disclosure provide, among other implementations, sequence determining methods. One example method includes: determining an index v of a sequence group, where the sequence group comprises a sequence {x} and a sequence {y}; generating a second sequence based on the index v of the sequence group, where the second sequence is at least one of a second sequence {f} or a second sequence {g}; and transmitting uplink control information or a reference signal based on the second sequence.

Sequence determining method and apparatus

Embodiments of this application disclose example data processing methods and example apparatuses. One example method includes determining, by a first terminal device based on a parameter group, a first sequence including N elements, where the parameter group includes a first parameter, a second parameter, and a cyclic shift value, the first sequence is obtained by performing cyclic shift on a second sequence based on the cyclic shift value, and the second sequence is determined based on the first parameter and the second parameter. The first terminal device can then send a signal to a network device based on the first sequence.

Data processing method and apparatus

This application provides a sequence-based signal processing method and apparatus. An example signal processing method includes: determining a sequence {x} including N elements, where N is equal to 18 and the sequence {x} satisfies a preset condition; generating a first signal based on the sequence {x}; and sending the first signal.

This application relates to a sequence detection method and a device. One example method includes receiving a first sequence carried on a plurality of subcarriers; differentiating the first sequence based on L granularities, to obtain a first differential sequence set comprising L sequences; determining K candidate frequency domain root sequences in the U candidate frequency domain root sequences based on differential sequence cross correlation value sets corresponding to the U candidate frequency domain root sequences; and determining a candidate frequency domain root sequence and a time domain cyclic shift value that correspond to the first sequence, based on the first sequence and the K candidate frequency domain root sequences.

Sequence detection method and device

Growing community of inventors

Beijing, China

Bingyu Qu