Telefonaktiebolaget Lm Ericsson (Publ)

Huaisong Zhu

Zhan Zhang

Jianfeng Wang

Qianxi Lu

Yipeng Zhang

Yang Hu

Lei Xiao

Chunhui Liu

Qingyu Miao

Li Wang

Xinghua Song

Zhiheng Guo

Shaowei Yu

Yanyan Zhu

Yi Wang

Angelo Centonza

Yang Tian

Ming Li

Zhi Ge

Henrik Sahlin

Yu Yang

Feng Li

Christian Skärby

Hugo Tullberg

Youping Su

Jie Mao

Jinliang Huang

Xueqin Chen

LuSheng Yu

Yanqiang Li

Zhiyi Zong

Qi Qin

Jingyue Nie

Yang Liu

Jinhua Liu

Rui Fan

Shaohua Li

Jonas Fröberg Olsson

Hai Feng Wang

Bin Xu

Ying Sun

Hao Zhang

Fredrik Huss

Chen Liu

Huichun Liu

Jiansong Gan

Yongquan Qiang

Xinyu Gu

Caner Kilinc

Yu Qian

Zhenguo Ma

Jinsong Yang

Jiying Xu

Yuanjun Xu

Kangqi Liu

Tao Gu

Dian Bj Wang

Jiuhui Du

Yaxin Zhou

Yingjun Shi

Chi Chuen Yuen

Wenming Cui

Steve Lou

Lei Ziao

Yiliang Chen

Yue Huang

Ruiling Zheng

Dian Wang

Embodiments of the present disclosure provide methods and apparatus for configuring channel resource. A method performed at a network node may comprise: determining (S) a need to change radio frequency of a cell served by the network node; determining (S) whether a configuration for channel resource to which the radio frequency to be changed has been received by a terminal device served in the cell; and transmitting (S), to the terminal device, an indicator for the configuration for the channel resource, in response to that the configuration for the channel resource has been received by the terminal device. According to embodiments of the present disclosure, the network node may just transmit an indicator for the configuration for the channel resource, and thus the messages in the communication network needed to configure channel resource may be reduced.

Method and apparatus for configuring channel resource

A method and a base station for resource allocation are disclosed. According to an embodiment, the base station determines a number of physical resource blocks (PRBs) consumed by a code block. The base station allocates a first set of PRBs for a transmission for a terminal device, based on channel qualities of a second set of PRBs which have a quantity equaling to the determined number and have the worst channel qualities among the first set of PRBs.

Method and base station for resource allocation

Embodiments of the present disclosure relate to a method and an apparatus for antenna calibration. A method performed by an apparatus for antenna calibration may comprise: inserting a calibration signal to a physical resource block allocated for a traffic signal; and distinguishing the calibration signal from the traffic signal at a calibration receiver for antenna calibration. According to embodiments of the present disclosure, antenna calibration signals and traffic signals may be transmitted simultaneously.

Methods and apparatus for antenna calibration

A method and a terminal device are disclosed for measurement control. According to an embodiment, the terminal device detects, for a cell that is shared by two operators and to be measured by the terminal device, whether frequency bands used by the two operators for the cell are overlapped. When detecting that frequency bands used by the two operators for the cell are overlapped, the terminal device performs measurement on a reference signal from one of the two operators at least at the overlapped portion of the frequency bands. The terminal device reports information about a result of the measurement to the two operators.

Method and terminal device for measurement control

Methods and apparatuses are disclosed for beam measurement. According to an embodiment, a base station obtains a subset of target beams of at least one neighboring base station which is to be measured by a terminal device. The subset is based on historical association between a source beam serving the terminal device and one or more of the target beams. The base station transmits information indicating the subset to the terminal device.

Methods and apparatuses for beam measurement

A method and an apparatus for fault mitigation in a base station are disclosed. According to an embodiment, a faulty antenna element in an antenna array is detected. The antenna array transmits a first beam covering a predetermined range of directions. A target direction in which radiation power dropped due to a fault of the detected faulty antenna element is determined. A second beam pointing to the determined target direction is generated.

Method and apparatus for fault mitigation in base station

A method in a network device for link adaptation includes estimating a probability distribution of downlink Signal to Interference plus Noise Ratio, SINR, for a terminal device based at least on one or more Acknowledgement, ACK, or Negative Acknowledgement, NACK, messages from the terminal device. A Modulation and Coding Scheme, MCS, for downlink transmission to the terminal device is determined based on the estimated probability distribution of downlink SINR.

Method and network device for link adaptation

Methods of operating a radio access network (RAN) node in a communication network. Methods include operations of receiving valid channel data from multiple user equipment (UE) devices. The channel data includes channel impulse response distribution data corresponding to the UE devices. Operations include generating a virtual UE based on a first delay spread of a first UE device of the UE devices in a multiple user multiple input multiple output (MU-MIMO) scheduling configuration.

Delta spread-wise MU-MIMO scaling configuration

A lens antenna and a lens antenna array are disclosed. A radio device and a method performed by the radio device are also disclosed. The lens antenna may include a lens, and two or more sets of antenna elements which are respectively disposed on two or more imaginary surfaces on a lateral side of the lens. The two or more imaginary surfaces may have different distances to a center point of the lens. The lens antenna array may include a plurality of lens antennas described above. The antenna elements in the plurality of lens antennas may be disposed on a same lateral side of the lenses in the plurality of lens antennas. A method for selecting antenna elements is performed by the radio device controlling the lens antenna or lens antenna array, when the lens antenna or lens antenna array operates as transmission or reception radio antennas.

Lens antenna, lens antenna array, radio device and method performed by radio device

The present disclosure provides a method in a network device serving a first cell and a second cell. The method includes: determining that a first User Equipment, UE, in the first cell and a second UE in the second cell are associated with one physical terminal device; and enabling, in response to said determining, the terminal device to perform as the first UE, without enabling the terminal device to perform as the second UE, one or more of: measuring a reference signal from the network device, transmitting a reference signal to the network device, or transmitting a measurement report to the network device.

Network device and method therein

Various embodiments of the present disclosure provide a method for beamforming. The method which may be at a network node and includes: obtaining channel information of a terminal device; determining a self-correlation factor of the terminal device according to the channel information; determining main lobe width according to a relationship between self-correlation factor and main lobe width; determining a weight vector on at least one transmitting antenna according to the determined main lobe width; and transmitting a message using the weight vector on the at least one transmitting antenna, to the terminal device.

Methods and devices for beamforming

Mechanisms for calibrating radio frequency branches of a radio transceiver device in a radio access network node. The method includes co-scheduling downlink time/frequency resources for terminal devices in accordance with a set of terminal device identifiers. One of the terminal device identifiers is not of any terminal device served by the radio access network node. The downlink time/frequency resources for this terminal device identifier define time/frequency resources for calibrating the radio frequency branches. The method includes determining a difference in amplitude/phase between the radio frequency branches by analysing a signal as received via an internal coupler unit in the radio transceiver device. The signal represents the time/frequency resources as transmitted over at least some of the radio frequency branches. The method includes calibrating the radio frequency branches by adjusting an amplitude/phase setting of at least one of the radio frequency branches according to the determined difference.

Radio frequency branch calibration of a radio transceiver device

The present disclosure provides a method () at a first network node and a method () at a second network node. The method () at the first network node comprises performing () scheduling in a first frequency band and providing () information related to a result of the scheduling to the second network node. The method () at the second network node comprises obtaining () information related to a result of scheduling by the first network node in a first frequency band and determining (), based at least on the information, a size of a guard band between the first frequency band and a second frequency band to be scheduled by the second network node.

Methods and devices for wireless communication

The present disclosure discloses methods and devices for wireless communication. Specifically, a method for resource allocation at a network device is provided. The method includes allocating a first frequency band to at least one first terminal device utilizing a first radio access technology (RAT), and allocating a second frequency band to at least one second terminal device utilizing a second RAT. The first frequency band is at least partly overlapped with the second frequency band, and the overlapped part of the first and second frequency bands is spatially multiplexed between the at least one first terminal device and the at least one second terminal device.

Method and devices for wireless communication

Provided is a method in a network device for radio beam determination. The method includes: obtaining current information data related to a terminal device; and estimating a candidate radio beam configuration for communication with the terminal device based on the current information data by using a probabilistic mechanism, algorithm or policy that is obtained by analyzing historical radio beam configurations for communication with the terminal device and history information data related to the terminal.

Methods and devices for radio beam determination

Growing community of inventors

Beijing, China

Huaisong Zhu