Huawei Technologies Co., Limited

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Lu Rong

Jianglei Ma

Kelvin Kar Kin Au

Yong Liang Liu

Yinggang Du

Liqing Zhang

Xiaoyan Bi

Jin Liu

Jinfang Zhang

Zhengzheng Xiang

Pu Yuan

Xiang Ren

Rong Li

Jun Luo

Yan Chen

Yalin Liu

Xiuqiang Xu

Yong Xie

Shunqing Zhang

Dageng Chen

Wen Tong

Peiying Zhu

Yongxing Zhou

Bingyu Qu

Wei Zhang

Lei Zhang

Thomas Wirth

Hejia Luo

Jun Chen

Lei Lu

Xi Zhang

Huazi Zhang

Jian Jun Wang

Jian Wang

Lars Thiele

Rui Wang

Yiqun Wu

Rongdao Yu

Yong Liu

Su Huang

Jianjun Wu

Yue Zhou

Lu Wu

Martin Kurras

Hong Cheng

Mingxin Gong

Bo Fan

Bojie Li

Guangzhu Zeng

Yungang Li

This application discloses a DMRS indicating method, a DMRS receiving method, and an apparatus. The method includes: determining, by a transmit end from a plurality of groups of demodulation reference signal DMRS configuration information, DMRS configuration information corresponding to a current DMRS transmission scheme, and obtaining DMRS indication information based on the DMRS configuration information, where each group of DMRS configuration information includes a plurality of pieces of DMRS configuration information; and sending, by the transmit end, the DMRS indication information. The method and the apparatus provided in this application are implemented to match a plurality of scenarios in NR. This can satisfy a requirement for transmitting more layers of data, and can further reduce indication overheads.

Demodulation reference signal indicating and receiving methods, transmit end, and receive end

This application provides a data transmission method and apparatus, to determine a TC-state used for data transmission and correctly receive downlink data, thereby improving data transmission efficiency. The method includes: receiving a first physical downlink control channel (PDCCH), where the first PDCCH is used to schedule a first physical downlink shared channel (PDSCH); receiving a downlink signal by using a first transmission configuration indicator state (TC-state); obtaining a time interval between the first PDCCH and the first PDSCH; and if the time interval is less than a preset threshold, obtaining the first PDSCH from the downlink signal.

Data transmission method and apparatus

This disclosure discloses signal configuration methods and apparatuses. In an implementation, a method comprises: generating at least two reference signals of a same type corresponding to at least two antenna ports indicated to a terminal device, wherein the at least two reference signals comprise a first reference signal and a second reference signal, wherein a first sequence of the first reference signal is obtained based on a first initialization factor determined based on an index of a first code division multiplexing (CDM) group, and wherein a second sequence of the second reference signal different from the first sequence is obtained based on a second initialization factor determined based on an index of a second CDM group; and transmitting the at least two reference signals.

Reference signal configuration method and apparatus, and sequence configuration method and apparatus

A signal transmission method and an apparatus are disclosed. In an embodiment a signal transmission method includes generating a reference signal and sending the reference signal, wherein the reference signal is sent in a specific time-frequency resource, and the specific time-frequency resource is located on symbols corresponding to a synchronization signal block.

Demodulation reference signal transmission method and apparatus

Embodiments of this application disclose a resource configuration method and a device. The method includes: generating, by a transmit end device, configuration information, where the configuration information is used to indicate at least one resource bundling size, the resource bundling size belongs to a resource bundling size set, and the resource bundling size set corresponds to at least one system configuration parameter; and sending, by the transmit end device, the configuration information.

Resource configuration method and device

Signal processing complexity in fifth generation (5G) networks can be reduced by communicating wireless signals over self-contained partitions of a carrier such that the wireless transmission communicated over each self-contained partition of the carrier includes all physical control channel signaling required to decode data carried in a physical data channel of the partition. The control signaling may include resource assignment within the partition, modulation and coding scheme indication, reference signal configuration and retransmission information. In some embodiments, an anchor partition of a carrier is used to communicate initial access information for self-contained partitions of the carrier. The initial access information may include center-frequencies, bandwidths, and/or air interface configurations of the self-contained partitions. The anchor partition may also carry load indications associated with the self-contained partitions.

Systems and methods for self-contained air interface partitions

This application provides an information transmission method and device. The method includes: determining, by a terminal device when an uplink-downlink configuration between the terminal device and a network device is a first uplink-downlink configuration, a first resource used to transmit first information; receiving, by the terminal device, indication information from the network device, where the indication information is used to indicate that the uplink-downlink configuration is a second uplink-downlink configuration; determining, by the terminal device based on the indication information, a second resource used to transmit the first information; and transmitting, by the terminal device, the first information with the network device on the second resource.

Information transmission method and device

It is possible to reduce the implementation complexity associated with dynamic carrier configuration by defining overlapping sets of candidate numerologies for at least some carriers in the network. A common numerology is included in sets of candidate numerologies pre-associated with two different carriers. This reduces the amount of numerologies that need to be supported by the corresponding user equipments (UEs) and base stations, which in turn reduces the complexity of those devices, e.g., less complex hardware, protocol stacks, and software, lower storage and processing requirements, etc. The common numerology specifies a common subset of physical layer parameters for both carriers. In one example, the common numerology specifies the same sub-carrier frequency spacing and symbol duration for both carriers. The common numerology may further specify the same cyclic prefix (CP) length for symbols communicated over both carriers.

Systems and methods for configuring carriers using overlapping sets of candidate numerologies

A codebook feedback method and an apparatus. In the method, antenna ports corresponding to first-type reference signals of a cell in which a user equipment (UE) is located are grouped into at least two antenna port groups, and each antenna port group includes at least one antenna port, and the method includes receiving, by the UE, a first-type reference signal that is corresponding to a target antenna port group and that is sent by a base station, where the target antenna port group is an antenna port group in the at least two antenna port groups, obtaining, by the UE, precoding matrix indicator (PMI) information of the first-type reference signal corresponding to the target antenna port group and sending, by the UE, the PMI information to the base station.

Codebook feedback method and apparatus

A signal transmission method and an apparatus are disclosed. In an embodiment a signal transmission method includes generating a demodulation reference signal and sending the demodulation reference signal, wherein the demodulation reference signal is sent in a specific time-frequency resource, and the specific time-frequency resource is located on symbols corresponding to a synchronization signal block.

Embodiments of the present disclosure disclose a precoding configuration method, device, and system. The precoding configuration method includes: generating precoding configuration information, where the precoding configuration information is used to configure a width of a frequency band for same precoding; and sending the precoding configuration information. The embodiments of the present disclosure further provide a transmit end device, a receive end device, and the precoding configuration system. In the precoding configuration method provided in the embodiments of the present disclosure, the precoding configuration information is generated and sent, so that a receive end can determine, based on the precoding configuration information, the width of the frequency band for same precoding. In the prior art, the width of the frequency band for same precoding is determined based on only system bandwidth, while the width of the frequency band for same precoding can be flexibly determined in the technical solutions provided in the embodiments of the present disclosure, so that requirements of a wireless communications system can be met in diversified scenarios, and system performance can be effectively optimized in different scenarios.

Precoding configuration method, device, and system

This application provides a reference signal sending and receiving method, a network device, and a terminal device. The method includes: determining, by a network device, a transmit power used to transmit a reference signal, where the transmit power is related to a quantity of ports carried on an RE occupied by the reference signal; and sending, by the network device, the reference signal based on the transmit power.

Reference signal sending and receiving method, network device, and terminal device

Growing community of inventors

Shanghai, China

Lu Rong