Datang Mobile Communications Equipment Co., Ltd.

China Academy of Telecommunications Technology

Xiangli Lin

Xuejuan Gao

Di Zhang

Bin Ren

Zheng Zhao

Yanping Xing

Fang-Chen Cheng

Fangchen Cheng

Tony Ekpenyong

Qianqian Si

Ekpenyong Tony

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.

Growing community of inventors

Beijing, China

Xiangli Lin