Datang Mobile Communications Equipment Co., Ltd.

China Academy of Telecommunications Technology

Shanghai Ultimate Power Communications Technology Co., Ltd.

Other

Xiaomi Inc.

Shaohui Sun

Yingmin Wang

Deshan Miao

Qiubin Gao

Xueming Pan

Jiaqing Wang

Shaoli Kang

Shiqiang Suo

Bin Ren

Zukang Shen

Guojun Xiao

Fang-Chen Cheng

Rakesh Tamrakar

Fei Qin

Di Zhang

Yu Ding

Hui Li

Xuejuan Gao

Xin Su

Wenhong Chen

Meiying Yang

Lei Wang

Runhua Chen

Gang Li

Ren Da

Zheng Zhao

Tamrakar Rakesh

Yang Yu

Zhenyu Zhang

Libo Wang

Ying Peng

Fangchen Cheng

Yali Zhao

Ke Fei Wang

Jing Min Xu

Jing Liang

Ruiqi Zhang

Jun Chen

Li Liu

Yanan Lin

Rui Zhang

Yanping Xing

Qianqian Si

Ke Wang

Shanzhi Chen

Yongbin Xie

Hai Tang

Guiliang Yang

Yuemin Cai

Hai Bi

Baoming Bai

Ranran Zhang

Chen Luo

Jiancheng Sun

Meifang Jing

Xiaoming Dai

Chun Luo

Xijin Mu

Bo Han

Wenjian Zhang

Hao Ni

Jinbo Zhao

Changguo Sun

Jiangsheng Fan

Ye Zhou

Rongyi Fang

Guanghui Zhang

Shaoshuai Fan

Liming Hou

Xi Meng

Hao He

Deshan Miu

Yongjun Deng

Yeming Tang

Jinling Hu

Yunzhe Hou

Ying-min Wang

Fei Wan

Qunying Wu

Mengfan Zhou

Boyang Hu

Dafei Yu

Zhanqi Zheng

Jing Xu

Wenping Ma

Zhuo Gao

Haijun Zhou

Provided in the embodiments of the present disclosure are a carrier phase tracking method and device for an orthogonal frequency division multiplexing (OFDM) multi-carrier system. The method includes: performing frequency domain tracking on a received current OFDM symbol and determining a phase of each subcarrier; analyzing a phase curve of all subcarriers and determining an inter-symbol phase average offset, and the inter-symbol phase average offset is used to characterize an estimated value of a difference obtained by subtracting a second value from a first value, the first value is a carrier phase value of the current OFDM symbol, and the second value is an estimated value of a carrier phase of a previous OFDM symbol; and performing time domain tracking by using the inter-symbol phase average offset as an input phase and determining an estimated value of a carrier phase of the current OFDM symbol.

Carrier phase tracking method and device for orthogonal frequency division multiplexing multi-carrier system

The present application relates to the field of communications, and in particular to a channel and/or signal transceiving method and apparatus. The method comprises: a network side configuring a first channel and/or a first signal, wherein the first channel and/or the first signal are/is used for indicating the receiving and/or sending of a second signal of at least one terminal group corresponding to at least one terminal; and the network side sending the first channel and/or the first signal to the at least one terminal, and the terminal receiving, on the basis of a manner indicated by the network side, the second signal sent by the network side, such that when the terminal is in an RRC-idle or RRC-inactive state, the network side can reduce, in the manner, the number of times that various types of messages are received by a terminal side.

Channel and/or signal transceiving method and apparatus

Disclosed in the present disclosure are channel selection and configuration methods and apparatuses. At a terminal side, the channel selection method provided in an embodiment of the present disclosure includes: determining a current signal transmission condition; and according to the current signal transmission condition and the configuration of a network, selecting the resources and channel format of a random access channel, and the random access channel uses a structure in which signal transmission is performed by using a means of repeated transmission by multiple preamble symbols.

Channel selection and configuration methods and apparatuses

A method, a device, a terminal and a service device for determining satellite communication system parameters are provided. The method includes: obtaining gateway station information, according to an ephemeris information table or a system message; calculating feeder link information of a current communication link, according to the obtained gateway station information; and determining a satellite communication system parameter of the terminal according to the feeder link information.

Method, device, terminal and service device for determining sateellite communications system parameters

This disclosure provides a satellite beam offset processing method, a device and a medium. The method includes: a network side device indicating a satellite beam offset parameter to a terminal via a broadcast message and/or a dedicated signalling; the terminal receiving the satellite beam offset parameter indicated by the network side device via the broadcast message and/or the dedicated signalling; and the terminal adjusting a communication process of the terminal according to the satellite beam offset parameter.

Satellite beam offset processing method, device and medium

Embodiments of the present application relates to a method and device for random access, for use in resolving the problem that no current random access process can satisfy requirements of a satellite communication system. The method of the embodiments of the present application comprises: receiving and obtaining a related parameter in a configuration message, the related parameter comprising common cell delay information; generating a physical random access channel random access preamble (PRACH Preamble) sequence, and determining an uplink sending timing location according to the common cell delay information; and sending the PRACH Preamble sequence on a time-frequency resource corresponding to the uplink sending timing location. A relative transmission delay and a multi-path channel delay from a terminal, to a satellite, and to a base station are compensated according to the determined uplink sending timing location, thereby reducing overheads of a PRACH channel.

Method and device for random access

Provided in the embodiments of the present disclosure are an information reporting method, a terminal and a base station. The method includes receiving first indication information that is configured for a terminal by a base station and is used for reporting channel state information (CSI) in an energy-saving state; receiving first downlink control information (DCI) that is sent by the base station and is scrambled by a power saving radio network temporary identity (PS-RNTI); and performing CSI measurement according to the first indication information and/or the first DCI, and reporting a CSI measurement result to the base station. Therefore, by means of the present disclosure, a base station can obtain a CSI measurement result in a timely manner and perform effective scheduling, and a terminal executes CSI reporting in an energy-saving state under the instruction of the base station, to improve the efficiency of CSI reporting.

Information reporting method, terminal and base station

Disclosed in the embodiments of the present application are a network access method and apparatus for a terminal, an electronic device and a storage medium. The method includes a terminal determining a beam sweeping interval and a sweeping frequency point, and receiving a base station signal sent or forwarded by a satellite; determining the downlink signal quality of the base station according to the base station signal; and if it is determined, according to the downlink signal quality, that the terminal can successfully find a satellite, executing a network access process of the terminal. In the embodiments of the present application, the downlink signal quality of a base station is determined by means of a base station signal sent or forwarded by a satellite; and it is further determined, according to the downlink signal quality, whether a terminal can successfully find a satellite.

Network access method and apparatus for terminal, electronic device and storage medium

A method and apparatus for transmitting downlink control information. In the present invention, transmitted downlink control information at least comprises one or more of the following information fields: a first information field used for indicating the frequency domain resources occupied by the data resources scheduled by the DCI, a second information field used for indicating the time frequency resources occupied by the data resources scheduled by the DCI, and a third information field used for indicating the scheduled N users. As the resource size occupied by the transmission resources in the frequency domain and/or in the time domain is indicated by means of the downlink control information, transmission of downlink control information can be implemented in flexible resource allocation scenarios having variable transmission time intervals.

Method and apparatus for transmitting downlink control information

Disclosed are a beam switching method and apparatus, relating to the field of wireless communications, and used for reducing beam switching time and reducing the signaling overhead of switching. The method comprises: determining a beam that needs to be switched, and obtaining the beam identifier of a switched beam and physical random access channel (PRACH) resource indication information; and after the switching of the beam is completed, transmitting, to a network device on the time frequency resource of the switched beam indicated by the PRACH resource indication information, a PRACH signal used for indicating that the switching of the beam is completed. By means of the beam switching method, a beam switching process does not need to transmit an RRC signaling to the network device, and does not need to wait to establish an RRC connection with the network device.

Beam switching method and apparatus

Embodiments of the present application provide a power-saving information transmission method, a base station, and a terminal. The method includes configuring, by a base station, first power-saving information of a first moment of a first carrier, the first power-saving information being used for indicating transmission of first information of the first carrier and/or a second carrier; and transmitting, by the base station, the first power-saving information. Embodiments of the present application can solve the problem that how to configure the power-saving information of multiple carriers in case that the base station is provided with multiple carriers and a terminal achieves a power-saving effect, and avoid or mitigate the problem that in case that different energy saving information are configured for different carriers, the terminal cannot save energy as long as the configuration for one carrier is not configured for energy saving, to reduce the power consumption of the terminal.

Power-saving information transmission method, base station and terminal

A control method and a control device in a heterogeneous three-dimensional hierarchical network, and a communication system are provided. The control method includes: obtaining a coverage mode of a terminal; when the coverage mode is single-layered sub-network coverage, setting a non-ground mobile communication sub-network or a ground mobile communication sub-network corresponding to the single-layered sub-network coverage to be in a standalone operating mode or an intra-layer carrier aggregation mode; and when the coverage mode is multi-layered sub-network coverage, setting the non-ground mobile communication sub-network corresponding to the multi-layered sub-network coverage, or the ground mobile communication sub-network and the non-ground mobile communication sub-network corresponding to the multi-layered sub-network coverage, to be in a cross-layer carrier aggregation mode. The ground mobile communication sub-network and the non-ground mobile communication sub-network use a same or unified radio access technology.

Control method and control device in heterogeneous three-dimensional hierarchical network, and communication system

Disclosed are beam training methods and devices. A beam training method includes: a transmitting end determining a first mapping relationship between BPL identifiers, CRIs, and transmitting beams; the transmitting end configuring a first reference signal resource for a receiving end, and transmitting configuration information of the first reference signal resource to the receiving end, the configuration information including a first BPL identifier; the transmitting end determining a first transmitting beam; the transmitting end transmitting a reference signal to the receiving end, by using the first transmitting beam within the first reference signal resource, so that the receiving end receives the reference signal on the first reference signal resource.

Beam training method and device, communication system

Disclosed in the embodiments of the present application are a method and a device for eliminating non-line of sight (NLOS) in time of arrival (TOA) measurement values, and a terminal. The method includes: modeling a probability density of the first TOA measurement values from each base station to a terminal into a Gaussian mixture model, and selecting the TOA measurement values modeled into the Gaussian mixture model; performing NLOS identification on the selected TOA measurement values to obtain an identification label; and the identification label is used to indicate whether the selected TOA measurement values correspond to NLOS; and correcting the selected TOA measurement values according to the identification label, to eliminate errors caused by NLOS in the selected TOA measurement values.

Method and device for eliminating non-line of sight errors of time of arrival measurement values, and terminal

Disclosed are a signal transmission method and device. In the present application, the method includes: a base station configuring sending resources for at least two of a first signal, a second signal and a third signal, and sending the at least two signals according to the sending resources for the at least two signals, wherein in the at least two signals, the transceiving of one signal is indicated by at least one of the other signals; the first signal is a signal for at least one of the functions of synchronization, wave beam measurement, wave beam acquisition and RRM; the second signal is a signal for at least one of the functions of synchronization, fine synchronization, wave beam measurement, wave beam acquisition, RRM, CSI measurement and terminal wakeup; and the third signal is a signal for paging.

Signal transmission method and device

Growing community of inventors

Beijing, China

Shaohui Sun