Datang Mobile Communications Equipment Co., Ltd.

China Academy of Telecommunications Technology

Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd.

Xiangli Lin

Xuejuan Gao

Di Zhang

Bin Ren

Zheng Zhao

Yanping Xing

Fang-Chen Cheng

Fangchen Cheng

Tony Ekpenyong

Qianqian Si

Ekpenyong Tony

Fei Wang

Zuoxin Li

Yansong Han

Jiuming Chi

Changfan Li

Yingying Liu

Jian Peng

Xi Han

The present application describes a data transmission method and device, which are used to better support non-orthogonal multiple access data transmission in an uplink grant-free scenario. The data transmission method includes determining a demodulation reference signal (DMRS) orthogonal port pattern of an uplink data channel, there being more than 12 DMRS orthogonal ports; and using the DMRS orthogonal port pattern to carry out data transmission.

Data transmission method and device

Embodiments of the present application provide a method and a device for determining a power control offset for a PUCCH, for resolving the technical issue in which existing methods for determining a power control offset for a PUCCH are incompatible with new radio communications systems. The method comprises: determining the number of bits, O, of first uplink control information (UCI) required to be transmitted on a PUCCH, and determining the number, N, of resource elements (RE) carrying the first UCI in the PUCCH; and determining, according to formula (I), an offset Δ(i) for calculation of power control of the PUCCH, wherein g(O/N) is a function having Oand Nas variables thereof.

Method and device for determining power control offset for pucch

Disclosed are a non-orthogonal multiple access (NOMA) multi-layer transmission method and an apparatus therefor. The method includes: a terminal determines a spread spectrum sequence group for NOMA multi-layer transmission, with the terminal being configured for NOMA multi-layer transmission, and the spread spectrum sequence group includes N spread spectrum sequences, the N spread spectrum sequences correspond to N data layers, the N spread spectrum sequences are mutually orthogonal, N is the number of data layers of NOMA multi-layer transmission, and N is an integer greater than 1; and the terminal sends data, the data comprising the N data layers using the spread spectrum sequence group for spectrum spreading.

Non-orthogonal multiple access (NOMA) multi-layer transmission method and apparatus therefor

Embodiments of the present application provide a method and a device for determining a power control offset for a PUCCH, for resolving the issue in which existing methods for determining a power control offset for a PUCCH are incompatible with new radio communications systems. The method comprises: determining the number of bits, O, of first uplink control information (UCI) required to be transmitted on a PUCCH, and determining the number, N, of resource elements (RE) carrying the first UCI in the PUCCH; and determining, according to formula (I), an offset &#x394;(i) for calculation of power control of the PUCCH, and g(O/N) is a function having Oand Nas variables thereof.

Method and device for determining power control offset for PUCCH

An uplink power control method and a mobile terminal are provided. The method includes: acquiring an uplink transmission parameter corresponding to an uplink channel format; calculating an uplink power adjustment value according to the uplink transmission parameter, to control an uplink power.

Uplink power control method and mobile terminal

A method and a device for dividing short TTIs of a special subframe are provided. The method includes: in a case that a configuration of a special subframe having a normal CP is used in downlink, and a DwPTS of the special subframe is used for short TTI transmission, dividing short TTIs in the DwPTS based on a predefined division pattern of short TTIs in a case that based on the configuration of the special subframe having the normal CP used in downlink and a length of a control region in the DwPTS, the DwPTS is determined to satisfy a division condition corresponding to the predefined division pattern of short TTIs.

Method and device for dividing short transmission time interval of special subframe

A method of generating an uplink signal sequence, a user equipment, a base station and a computer-readable storage medium are provided. The method includes: generating an uplink signal sequence r(n) based on r(n)=e(n), 0&#x2264;n&#x3c;12, where a is configured to distinguish a terminal, an uplink signal base sequence(n)=e, where u represents a group number, and v represents an intra-group base sequence number, &#x3c6;(n)&#x3c0;/4 represents a phase of a base sequence; performing a full traversal of multiple possible phases of the phase &#x3c6;(n)&#x3c0;/4 on the uplink signal sequence with a length of 12, and selecting a predetermined number of uplink signal sequences with a lowest peak-to-average power ratio and a lowest cross-correlation characteristic.

Method of generating uplink signal sequence, user equipment, base station and computer-readable storage medium

Disclosed in the present application are a data transmission method and device. The method comprises: a base station sends a signaling notification to a terminal, so that the terminal determines, according to the signaling notification, whether a pilot signal of data transmitted using a second transmission time interval exists within a first transmission time interval, wherein the first transmission time interval is shorter than the second transmission time interval, or the priority of a service carried by the first transmission time interval is higher than the priority of a service carried by the second transmission time interval, there is a resource overlap between the first transmission time interval and the second transmission time interval, and the terminal using the first transmission time interval for data transmission knows a pilot signal location of the data transmitted using the second transmission time interval; and the base station performing transmission according to a pilot signal resource location of the second transmission time interval. The present application can ensure that a receiving end for other service transmissions can use a pilot signal for data demodulation, thereby avoiding the waste of resources caused by the destruction of the pilot signal.

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Beijing, China

Xiangli Lin