Huawei Technologies Co., Limited

Hauwei Technologies Co., Ltd.

Godo Kaisha IP Bridge 1

Chaojun Li

Sha Ma

Juan Zheng

Yongxia Lyu

Jiafeng Shao

Zuomin Wu

Xiaobo Chen

Hailong Hou

Qiang Wu

Yongxia Lv

Lei Wan

Yang Li

Yongqiang Fei

Lei Guan

Yan Cheng

Lixia Xue

Bo Li

Xiaotao Ren

Zhiyu Yan

Liyan Su

Kunpeng Liu

Xiaoan Fan

Yawei Yu

Wei Quan

Zheng Yu

Brian Keith Classon

Bingyu Qu

Xiaodong Yang

Zhe Jin

Yujuan He

Yunji Zhang

Jian Zhang

Qiang Li

Hao Sun

Jianghua Liu

Zhiheng Guo

Hui Zhang

Xinqian Xie

Ruixiang Ma

Yuan Yuan Li

Jinhuan Xia

Mingyu Zhou

Tong Ji

Yuhua Chen

Yubo Yang

Yi Long

Yuan Li

Ronghui Wen

Zhihua Tang

Weilin Qu

Xiao'an Fan

Brian Classon

A communication method and apparatus to reduce a waiting latency in a retransmission process. A terminal device receives a first PDSCH from a network device. In response to failing to decode data carried on the first PDSCH, the terminal device sends an SRS to the network device on a first time-frequency resource. In response to the network device not receiving feedback information of the first PDSCH, or receiving feedback information of the first PDSCH that is a NACK, the network device retransmits the first PDSCH based on a result of measuring the SRS. After determining that the first PDSCH fails to be decoded, the terminal device directly sends the SRS to the network device by using the first time-frequency resource.

Information sending and receiving method, apparatus, and system

The technology of this application provides a control information transmission method, so that sizes of different downlink control information (DCI) can be aligned, thereby reducing types of DCI sizes and reducing power consumption when a terminal detects DCI. The method includes a terminal device detecting first DCI in a first search space, where the first DCI is used to indicate an active bandwidth part (BWP) of the terminal device, a size of the first DCI and a size of second DCI are aligned, the second DCI can be sent by a network device to the terminal device in a first common search space, and the second DCI is used to schedule a system message, a paging message, or a random access response (RAR).

Control information transmission method

A multi-antenna operation mode indication method and an apparatus resolve a problem that increased power consumption and a resource waste are caused because a terminal device still operates in a multi-user multiple-input multiple-output (MU-MIMO) mode by default in a single-port transmission mode. The method includes: a network device sends indication information to a terminal device, to indicate that a multi-antenna operation mode of the terminal device is single-user multiple-input multiple-output (SU-MIMO) or MU-MIMO. The terminal device determines, based on the indication information from the network device, whether a demodulation reference signal (DMRS) port number corresponding to the terminal device and a DMRS port number not corresponding to the terminal device are allocated to another terminal device, to adjust the multi-antenna operation mode.

Operation mode indication method, apparatus, and system

This application provides an uplink signal sending method, an apparatus, and a system, and generally relates to the field of communications technologies. The uplink signal sending method includes obtaining first indication information, and determining, based on the first indication information, whether to send an uplink signal on a supplementary uplink (SUL) or an uplink (UL). The first indication information is used to indicate a SUL available time, and the SUL available time is a time in which an uplink signal can be sent on an SUL carrier in a preset period. The method is applied to a procedure in which an uplink signal is sent by using an uplink carrier, to improve flexibility in an uplink signal sending process.

Uplink signal sending method, apparatus, and system

The present disclosure relates to methods and apparatus for determining an initial bandwidth part. One example method includes determining a frequency resource of a first initial BWP, where the frequency resource of the first initial BWP is included in a frequency resource of a second initial BWP, the frequency resource of the first initial BWP corresponds to a first-type terminal device, the frequency resource of the second initial BWP corresponds to a second-type terminal device, and the terminal devices of two types have different capabilities.

Method and apparatus for determining initial bandwidth part BWP, and storage medium

Embodiments of this application provide a random access response method and an apparatus. The method includes: RARs associated with one RO are transmitted based on groups, so that a transport block size of RAR data transmitted each time is reduced, and N bits in DCI format 1_0 of CRC are scrambled by using a RA-RNTI to indicate scheduling information of N RAR groups in a PDSCH. Alternatively, DCI format 1_0 of CRC is scrambled by using identifiers of RAR groups, to correspondingly schedule the RAR groups in the PDSCH. According to this application, a problem of a large transport block caused by a large quantity of RARs being transmitted in a PDSCH can be avoided, so that a modulation order or a bit rate is reduced, and demodulation performance of a terminal device is improved.

Random access response method and apparatus

A random access method and an apparatus. In one example: A terminal device receives a first wake-up signal, and then determines N random access channel occasions based on a correspondence between the first wake-up signal and the N random access channel occasions. The terminal device determines a first random access channel occasion in the N random access channel occasions, and sends a random access preamble on the first random access channel occasion. A network device uses, as a reception beam, a beam used to send the first wake-up signal, to receive the random access preamble sent by the terminal device.

Random access method and apparatus

A data transmission method and apparatus are provided. The method includes: A terminal device determines a first frequency band, receives first information from a network device, where the first information is used to indicate a first transmission frequency band, determines the first transmission frequency band based on the first information, and transmits data to the network device in the first transmission frequency band. A bandwidth of the first frequency band is greater than a maximum channel bandwidth supported by the terminal device. The first transmission frequency band is used by the terminal device to transmit data. The first frequency band includes the first transmission frequency band.

Determining a transmission frequency band

An embodiment method includes: determining, by a terminal device, at least one parameter based on first MCS information after receiving the first MCS information, where the at least one parameter is used to indicate a first reference signal pattern, so that the terminal device sends an uplink reference signal based on the first reference signal pattern; and determining, by a network device, the at least one parameter based on the first MCS information, where the at least one parameter is used to indicate the first reference signal pattern, so that the network device receives the uplink reference signal based on the first reference signal pattern.

Communication method and apparatus

The present disclosure relates to communication methods and apparatus. In one example method, a first control resource set is determined, where a quantity of symbols comprised in the first control resource set in time domain is a positive integer less than or equal to M, and M is an integer greater than 3. Control information is received on one or more resource elements in the first control resource set.

Control channel transmission method and apparatus

This application provides a synchronization signal transmission method and a communications apparatus. The synchronization signal transmission method and the communications apparatus are applied to the communications field. In the synchronization signal transmission method, a synchronization signal generated and sent by a network device may include a first sequence and a second sequence. The first sequence is a first complex sequence or a sequence obtained based on the first complex sequence. The second sequence is a sequence obtained based on the first complex sequence, and the second sequence is different from the first sequence. Because a correlation processing result between the first sequence and the second sequence is still a complex sequence, there is a good correlation property, so that a terminal device can obtain a relatively sharp correlation peak when synchronizing with the network device based on the synchronization signal, thereby effectively shortening duration required for synchronization.

Synchronization signal transmission method and communications apparatus

The present disclosure provides example signal sending and receiving methods, apparatuses, and devices. One example signal sending method includes a network device sending a first wake-up signal to indicate a terminal device to receive a first data channel, where the first data channel carries at least one of a paging message or a short message, and the short message indicates at least one of whether a system message changes or whether to receive earthquake and tsunami warning system (ETWS) information or commercial mobile alert service (CMAS) information. The first data channel is sent by the network device.

Signal sending and receiving method, apparatus, and device

This application provides a communication method and apparatus, applicable to the communication field, and in particular, to scheduling terminal devices corresponding to different bandwidth sizes or different capabilities. The method includes: A terminal apparatus receives first indication information from a network apparatus. The terminal apparatus receives target system information and/or target downlink control information from the network apparatus on a target frequency domain resource, where a bandwidth size of the target frequency domain resource is less than or equal to a bandwidth size supported by the terminal apparatus, and the target downlink control information is used to schedule the target system information.

Target system information scheduling method and apparatus

An apparatus includes one or more processors and a memory having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to receive a first wake-up signal. The first wake-up signal is one of K wake-up signals, K is an integer greater than or equal to 1, and the K wake-up signals are quasi co-located with K synchronization signal blocks (SSBs), K channel state information-reference signals (CSI-RSs), or K demodulation reference signals (DMRSs). The apparatus is also caused to determine M paging occasions. There is a correspondence between the K wake-up signals and the M paging occasions, and M is an integer greater than or equal to 1. The apparatus is further caused to receive, on the M paging occasions, downlink control information (DCI) used for paging.

Paging method and apparatus

A method includes: receiving first signaling, wherein the first signaling comprises demodulation reference signal (DMRS) patterns configured for N time units, each DMRS pattern is used to indicate a quantity of DMRSs in each time unit, the quantity of DMRSs in each time unit is a total quantity of time domain symbols occupied by all DMRSs in the time unit, DMRSs configured for at least two of the N time units occupy different total quantities of time domain symbols, and N is a positive integer greater than 1; and receiving or sending data in the N time units based on the total quantity of time domain symbols occupied by all the DMRSs in each time unit.

Method for obtaining configuration information of demodulation reference signal, configuration method, and apparatus

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Beijing, China

Chaojun Li