China Academy of Telecommunications Technology

Datang Mobile Communications Equipment Co., Ltd.

China Academy of Telecommunications Equipment Co., Ltd.

Xueming Pan

Zukang Shen

Xuejuan Gao

Guojun Xiao

Yanan Lin

Shaohui Sun

Yu Ding

Jiaqing Wang

Rui Zhao

Libo Wang

Jing Min Xu

Qiubin Gao

Fang-Chen Cheng

Deshan Miao

Bin Ren

Rakesh Tamrakar

Yingmin Wang

Fangchen Cheng

Lei Wang

Ying Peng

Yanping Xing

Yu Yang

Guoqing Li

Zheng Zhao

Wenhong Chen

Fangli Xu

Yajun Zhu

Li Long Chen

Xiaodong Yang

Jie Zhang

Yali Zhao

Shiqiang Suo

Qianqian Si

Weijie Xu

Wenjian Zhang

Tony Ekpenyong

Fei Qin

Ke Wang

Yongbin Xie

Hai Tang

Wei Bao

Ekpenyong Tony

Ranran Zhang

Jinling Hu

Mei Liu

Deshan Miu

Songtao Liu

Ke Fei Wang

Di Zhang

Tingting Liu

Wenling Bai

Chenggang Jiang

Haijun Zhou

Li Chen

Yuexia Song

Keke Liu

Ya'nan Lin

Wenping Ma

Minli Jia

Jing Xu

Zukang Sehn

Deshan Mu

Disclosed are a subframe type notification and determination methods and device. The invention enables a terminal to dynamically determine a subframe type, such that a subframe type can be flexibly changed to adapt to different service transmission requirements, thereby increasing system transmission efficiency. The subframe type determination method of the invention comprises: detecting, in a preset resource, indication information for determining a subframe type; and determining, according to a detection result, the subframe type.

Subframe type notification and determination methods and device

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 in the present invention are a method and device for transmitting and detecting a synchronous signal, which is used to solve the problem that there is currently no clear solution as to how should a terminal detect a synchronous signal when multiple types of base-band numerology are defined in a new wireless communication system. The method comprises: a terminal determining a base-band numerology used to detect a synchronous signal; the terminal detecting the synchronous signal according to the determined base-band numerology. The terminal first determines a base-band numerology used to detect a synchronous signal before detecting said synchronous signal, and then detects the synchronous signal according to the determined base-band numerology, so as to identify the base-band numerology used in the synchronous signal transmission in future communication systems which support multiple types of base-band numerology, thereby correctly detecting the synchronous signal.

Method and device for sending and detecting synchronous signal

A random access method and a terminal are provided. The random access method comprises: receiving random access mechanism configuration information sent by a base station, wherein the random access mechanism configuration information includes a random access type and random access time-frequency resource information corresponding to the random access type, and the random access type includes a first random access mechanism and/or a second random access mechanism; and performing a random access process of the first random access mechanism or the second random access mechanism according to the random access mechanism configuration information.

Random access method and terminal

An uplink transmission method and an uplink transmission device are provided. The uplink transmission method includes: detecting an UL grant on a target time-domain resource and a target frequency-domain resource in a first time unit, the UL grant being to schedule one or more UEs to perform uplink transmission in a target time unit, a time unit having a predefined length of B1 subframes or B2 symbols, where B1 and B2 are each an integer greater than or equal to 1; acquiring scheduling information for the UE in the target time unit from the UL grant; and performing the uplink transmission on a time-domain resource and a frequency-domain resource scheduled in the target time unit in accordance with the scheduling information.

Uplink transmission method and device

A method and device for determining the initial positions of a downlink data channel are provided. The method includes: a base station transmits to a terminal a generated indication signaling, and the terminal determines, on the basis of the received indication signaling, the time domain initial positions of the downlink data channel in L downlink TTIs. With the method, when the downlink control channel only appears in a part of the positions in a frequency domain or does not appear at all, and when the downlink control channel does not occupy the complete downlink control area in the time domain or the resources occupied by the downlink control channel in the time domain are variable, the base station can still accurately notify the terminal the time domain initial positions of the downlink data channel.

Method and device for determining initial positions of downlink data channel

A data transmission method, a terminal and a base station are provided by the present disclosure. The data transmission method of the present disclosure includes: receiving a downlink control channel carrying an indication field, wherein the indication field is used for indicating a time domain resource of a target transmission corresponding to the downlink control channel, and/or division of uplink resources and downlink resources in a target time unit in which the target transmission is located; determining the time domain resource of the target transmission corresponding to the downlink control channel, according to the indication field; and transmitting data on the time domain resource.

Data transmission method, terminal and base station

Disclosed are a method and device for determining a baseband parameter The method includes: according to an initial synchronization signal it detects, a terminal determining the TRP group to which the terminal belongs; according to a third synchronization signal detected in the TRP group and/or system information of the terminal group, the terminal determining the numerology.

Method and device for determining baseband parameter

The application provides an uplink transmission method, a network side device and a terminal. The uplink transmission method includes that a terminal receives first configuration information at a first-time-domain position, and receives second configuration information at a second-time-domain position, in which the first configuration information indicates frequency-domain resource information of an uplink shortened Transmission Time Interval (sTTI) transmission performed by the terminal at a third-time-domain position, and the second configuration information indicates scheduling information for the uplink sTTI transmission performed by the terminal at the third-time-domain position; and the terminal performs the uplink sTTI transmission at the third-time-domain position, according to the first and second configuration information.

Uplink transmission method, network side device and terminal

The present invention relates to the technical field of communications, and specifically relates to an uplink transmission method, terminal, and base station, used for providing a pilot frequency transmission solution for a terminal supporting an CP-OFDM waveform, and comprising: a terminal determines a frequency domain starting position of a pilot frequency, the terminal being a terminal using CP-OFDM to perform uplink transmission; on the basis of a comb-type interval and the determined frequency domain starting position, mapping the pilot frequency onto a transmission pilot frequency symbol; and sending the pilot frequency mapped onto the symbol to a base station.

Uplink transmission method, terminal, and base station

The present invention discloses a data transmission method and apparatus. The method comprises: determining on a terminal side whether there is an overlap between a transmission time of an uplink channel which transmits using a first transmission time interval length and a transmission time of an uplink channel which transmits using a second transmission time interval length; when there is an overlap, then selecting a part of the uplink channel for transmission according to a predetermined rule, and abandoning the remaining uplink channel for transmission or puncturing the transmission of the remaining uplink channel. On a network side, determining that the terminal selects one type of uplink channel for transmission according to the predetermined rule, and abandons another type of uplink channel for transmission or punctures the transmission of another type of uplink channel. With the present invention, correct transmission of the terminal can be achieved even when channels with different transmission time intervals overlap.

Method and device for avoiding uplink collisions with overlapping TTI

A data transmission method, a terminal and a base station are provided. The method includes: receiving a downlink control channel, and indication information for indicating a division of uplink resources and downlink resources in a time unit; determining uplink resources and/or downlink resources in a target time unit corresponding to the downlink control channel, according to the indication information, where the target time unit is the time unit in which a target transmission corresponding to the downlink control channel is located; and determining time field resources of the target transmission corresponding to the downlink control channel in the uplink resources or the downlink resources, and performing the target transmission in the time field resources.

Disclosed are an SRS transmission method and device. A terminal determines whether to transmit an SRS according to whether an SRS transmission frequency domain resource overlaps with a narrowband used for transmitting data or according to whether an adjacent narrowband used for data transmission is the same. The present invention is particularly suitable for narrowband terminal SRS transmission.

SRS transmission method and device

The present disclosure provides a transmission method and a transmission device. The transmission method includes: determining, by a transmitting end device, first SA information and first data to be transmitted, the first SA information at least including indication information about a DMRS sequence for the demodulation of the first data; and transmitting, by the transmitting end device, the first SA information in a first physical layer format and transmitting the first data in a second physical layer format.

Transmission method and device

Growing community of inventors

Beijing, China

Xueming Pan