Huawei Technologies Co., Limited

Chenchen Liu

Ming Gan

Jian Yu

Xiao Han

Rui Du

Meihong Zhang

Dandan Liang

Yunbo Li

Yuchen Guo

Xun Yang

Mengshi Hu

Yiqing Li

Yingxiang Sun

Yan Long

Bo Gong

Yan Xin

Shimon Shilo

Genadiy Tsodik

Qian Zhang

Guogang Huang

Wei Lin

Yun Zhang

Yang Yang

Jia He

Xiaohu Tang

Junping Zhang

Bingfu Wang

Li Yan

Xianfu Lei

Jing Li

Yuxin Lu

Ju Cao

Xiaohui Peng

Danny Kai Pin Tan

Yang Li

Cailian Deng

Zhengchun Zhou

Baojian Zhou

Xiangwen Guo

Jiahui Zhang

Huangxun Chen

Chongyang Zeng

Haibo Lin

A wireless local area network sensing method. The method includes: in a process in which a second network device performs high frequency MIMO channel access, a first network device sends indication information to a plurality of second network devices, where the indication information indicates the plurality of second network devices to send uplink sensing signals; and the first network device receives the uplink sensing signals from the second network devices and performs uplink sensing based on the uplink sensing signals.

Wireless local area network sensing method, network device, and chip

A method and an apparatus for transmitting a physical layer protocol data unit (PPDU) are provided. The method includes: generating a synchronization header field based on a first sequence or a third sequence, where a side lobe of a periodic cross-correlation function of the first sequence and a second sequence is a constant value, the first sequence is a binary sequence consisting of 1 and 0, the second sequence is a binary phase shift keying sequence corresponding to the first sequence, a side lobe of a periodic autocorrelation function of the third sequence is a constant value, and the third sequence is a binary phase shift keying sequence consisting of 1 and −1; and sending the PPDU on a target channel, where the PPDU includes the synchronization header field.

Method and apparatus for transmitting physical layer protocol data unit

A radar measurement method and an apparatus are disclosed, which relate to the field of communications technologies, and are used to support radar measurement in a wireless local area network (WLAN). The method includes: An access point (AP) generates a first frame, where the first frame includes radar measurement information. Then the AP sends the first frame to M stations (STAs), to configure the way the M STAs perform radar measurement. This application is applicable to a radar measurement procedure.

Radar measurement method and apparatus

A data transmission method and a communication apparatus are disclosed. The method includes: determining an aggregated physical layer protocol data unit (A-PPDU), where the A-PPDU includes at least two PPDUs belonging to different protocols, the A-PPDU includes a first sequence, the first sequence includes N segments of subsequences, any of the N segments of subsequences is obtained by performing phase rotation on a high efficiency-long training field (HE LTF) sequence and/or an extreme high throughput-long training field (EHT LTF) sequence based on a phase rotation parameter corresponding to the HE LTF sequence and/or a phase rotation parameter corresponding to the EHT LTF sequence, N phase rotation parameters corresponding to the N segments of subsequences include at least one phase rotation parameter whose value is −1, and N is a positive integer greater than or equal to 2; and sending the A-PPDU.

Data transmission method and communication apparatus

The technology of this disclosure relates to a signal modulating method, a signal demodulating method, a device, a storage medium, and a program product. In the signal modulating method according to a first aspect of this disclosure, a sending device modulates a bit sequence onto a plurality of subcarriers through binary phase shift keying (BPSK) constellation point mapping, dual carrier modulation (DCM), and a duplication (DUP) operation, where the plurality of subcarriers include a first group of subcarriers and a second group of subcarriers. Then, the sending device changes a phase of first data carried in the first group of subcarriers by 90 degrees or minus 90 degrees, and further generates a modulation signal based on the first data that is carried in the first group of subcarriers and whose phase has been changed and second data carried in the second group of subcarriers.

Signal modulating method, signal demodulating method, device, storage medium and program product

A method for transmitting an extremely high throughput long training field (EHT-LTF) sequence includes: A first communication device generates and sends an extremely high throughput physical layer protocol data unit (EHT PPDU), where the EHT PPDU includes an EHT-LTF; and correspondingly, a second communication device receives the EHT PPDU, and parses the EHT-LTF in the received EHT PPDU. In this way, an LTF sequence can be designed for the IEEE 802.11be standard, and a PAPR value of the LTF sequence on a resource unit can be reduced.

EHT-LTF sequence transmission method and related apparatus

This application discloses methods and apparatuses applicable to multiple links, for example, in a wireless local area network supporting an 802.11be standard. In an example, a first station (STA) of a first non-access-point multi-link device (non-AP MLD) receives individually addressed traffic indication information that indicates whether the first non-AP MLD associated with a first access point multi-link device (AP MLD) has a downlink individually addressed traffic and whether a second non-AP MLD associated with a second AP MLD has a downlink individually addressed traffic. The second AP MLD is an AP MLD to which a non-transmitted AP belongs, and the non-transmitted AP is in a multiple basic service set identifier (BSSID) set in which the first AP is located. The first STA determines whether the first non-AP MLD has a downlink individually addressed traffic according to the individually addressed traffic indication information.

Individually addressed traffic indication method applicable to multiple links and related apparatus

This application discloses a data transmission method that includes: scrambling to-be-transmitted data, to obtain scrambled data; and sending the scrambled data to a receive device. The initialization bits of a scrambler used to scramble the data include a first bit sequence and a second bit sequence. The first bit sequence is carried in a service field of the to-be-transmitted data, the second bit sequence reuses a bit in a signal field of a physical layer protocol data unit (PPDU), and the quantity of the initialization bits is equal to the order of the scrambler. In embodiments of this application, when the transmit device and the receive device use the scrambler with a higher order than that in the conventional technology, the initialization bits of the scrambler are based on bits in an existing service field used for data scrambling and reused bits in some signal fields.

Data transmission method and device, chip system, and computer-readable storage medium

This application discloses a signal processing method and an apparatus. The method includes: A transmit device generates a PPDU, and sends the PPDU; and a receive device receives the PPDU, and processes M sequences carried in the PPDU. The PPDU shown in this application includes a first field, the first field is used for carrying M sequences, the M sequences correspond to M space-time streams, one sequence corresponds to one space-time stream, and M is a positive integer. According to the method provided in this application, sequence sending efficiency can be effectively improved.

Signal processing method and apparatus

This disclosure provides data sending and receiving methods and apparatuses. In an implementation, a device performs a non-replication operation on a frequency domain sequence on subcarriers of a first bandwidth, to obtain a frequency domain sequence on subcarriers of a second bandwidth in a transmission bandwidth, transforms the frequency domain sequence on the subcarriers of the first bandwidth and the frequency domain sequence on the subcarriers of the second bandwidth into a time domain, and performs radio frequency processing on time domain data and then sends the processed time domain data.

Data sending and receiving method and apparatus

Embodiments of this application provide a method and an apparatus for transmitting a physical layer protocol data unit, to design a short training field sequence for a larger channel bandwidth. The short training field sequence designed in this application has a smaller peak-to-average power ratio PAPR and better performance. The method includes: generating a physical layer protocol data unit PPDU that complies with the 802.11be standard, where the PPDU includes a short training field, and a quantity of subcarriers of a frequency domain sequence of the short training field is greater than 2048; and sending the PPDU on a target channel, where a bandwidth of the target channel is greater than or equal to 160 MHz.

The disclosure provides ranging methods and apparatuses. One example method includes that a first device sends a first signal on a first channel. The first device receives, on a second channel, a second signal from a second device, where the second signal is a signal obtained after frequency conversion is performed on the first signal. The first device calculates a distance between the first device and the second device based on a phase difference between carriers of the second signal.

Ranging method and apparatus

A spatial multiplexing method and apparatus are provided to introduce WLAN sensing into a conventional spatial multiplexing mechanism and improve communication efficiency. In the method an AP sends a first request message to a first station and a second station, to request to measure channel quality in one or more sensing beam directions in a first SP; the AP sends a second request message to a third station and a fourth station, to request to measure channel quality in a communications beam direction in a second SP; the first station, the second station, the third station, and the fourth station separately perform measurement and report respective first measurement results; and the AP receives the first measurement results of the stations, and determines, based on the first measurement results, whether to perform spatial multiplexing on the first SP and the second SP.

Spatial multiplexing method and apparatus, computer-readable storage medium, and chip

This application provides example object locating methods and apparatuses. One example method includes performing, by a first device, pulse measurement on a target object with assistance of a second device, where the pulse measurement is performed on the target object by using two types of pulse signals, and pulse repetition frequencies of the two types of pulse signals are different. The first device can then locate the target object based on a pulse measurement result of the pulse measurement.

Object locating method and apparatus

This application relates to the field of communication technologies, and provides an information transmission method and an apparatus. The information transmission method includes: A transmit device generates a PPDU of a 320 MHz bandwidth, where some or all fields of the PPDU are rotated in the 320 MHz bandwidth based on a rotation factor sequence, the 320 MHz bandwidth includes sixteen 20 MHz sub-channels, the rotation factor sequence includes 16 rotation factors, and each 20 MHz sub-channel corresponds to one rotation factor. The transmit device sends the PPDU.

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Shenzhen, China

Chenchen Liu