Huawei Technologies Co., Limited

Hong Kong Applied Science and Technology Research Institute Company, Limited

The University of Hong Kong

Jrd Communication (Shenzhen) Ltd.

Kin Nang Lau

An Ling Liu

Kwok Shum Au

Huang Huang

Tingting Geng

Rongdao Yu

Ross David Murch

Xiongbin Rao

Xiangming Kong

Yinggang Du

Rui Wang

Jing Qiu

Tianyu Wu

Gong Zhang

Yan Chen

Yong Cheng

Wai Ho Mow

Yi Long

Cheng He

Xiaona Wang

Soung Liew

Yan Wang

Douglas Ronald George

Meixia Tao

Cheong Yui Wong

Roger Shu Kwan Cheng

Chih-Lin I

Zhengang Pan

Wing Chau Chan

Shu Kwan Cheng

Xueyuan Zhao

Shuqi Chai

Chun Kit Lee

Esther Koh

A method, base station and user equipment for multicasting and a device with a storage capability are disclosed in the present disclosure. The method for multicasting includes the following steps of: receiving, by a base station, queue state information transmitted in a time division manner by different user equipments (UEs) in a multicast group; and estimating queue state information of at least another part of UEs in the multicast group according to the received queue state information of the UEs. In this way, the present disclosure can enable the resource allocated to each of the UEs by the base station to match the queue state information of the UE, thereby avoiding the waste of resources without influencing the play effect.

Method, base station and user equipment for multicasting and device with a storage capability

A communication beam determining method and a corresponding apparatus are disclosed. The method includes respectively sending, by a network side device, downlink sounding signals by using M beams with a first width, where main lobe directions of any two of the M beams are different; receiving, by the network side device, sounding results returned by user equipment (UE), and determining N beams with a second width based on the sounding results, where the second width is less than the first width, a coverage area of a set of the N beams is smaller than a coverage area of a set of the M beams, and M and N are integers and not less than 2; and respectively sending, by the network side device, downlink scanning signals by using the N beams, and determining, based on scanning results returned by the UE, a first beam for data transmission with the UE.

Communication beam determining method and corresponding apparatus

Embodiments of the present invention provide a channel state information (CSI) feedback method and apparatus, user equipment, and a base station. The method, performed by a user equipment device, includes: pre-synchronizing, between the user equipment device and a base station, a basis matrix that includes sparsity of CSI in a frequency domain and a space domain; receiving pilot information from the base station; determining, according to the pilot information, a CSI information matrix that includes information about the frequency domain and the space domain of CSI; determining the data by using the CSI information matrix; and feeding back the data to the base station, so that the base station restores the corresponding CSI information from the data by using the basis matrix.

Channel state information feedback method and apparatus, user equipment, and base station

Embodiments of the present invention provide a signal processing method and a base station. By using respective sparse characteristics of a user signal and an interference signal, the user signal and the interference signal are iteratively recovered, that is, the interference signal is first fastened, and the user signal is recovered; and then the user signal is fastened, and the interference signal is recovered. In this way, an iteration cycle is repeated until the recovered user signal and the recovered interference signal meet a preset condition, thereby effectively improving interference cancellation performance, achieving relatively good interference suppression.

Signal processing method and base station

The present invention provides a channel measurement method, a channel measurement apparatus, user equipment. A wireless communications system includes a channel measurement apparatus and at least two user equipments. The method includes: sending, by the channel measurement apparatus, an antenna domain training sequence to the at least two user equipments; receiving, by the channel measurement apparatus, channel response measurement sequences sent by the at least two user equipments, where the channel response measurement sequences are sequences that are obtained after the antenna domain training sequence passes through channels and that are received by the at least two user equipments; and performing, by the channel measurement apparatus, joint processing on the received channel response measurement sequences of the at least two user equipments to obtain downlink channel state information CSIT.

Channel measurement method, channel measurement apparatus, user equipment, and system

The present invention relates to the field of communications technologies, and discloses a method, an apparatus, and a system for suppressing interference in a massive multiple-input multiple-output system, which overcome a disadvantage of sensitivity to a backhaul delay during an inter-cell interference cancellation process in an existing massive multiple-input multiple-output system. A specific embodiment of the present invention includes: obtaining channel correlation matrixes of all links, and further calculating a combined outer precoder set according to the channel correlation matrixes, where each combined outer precoder includes at least one outer precoder, and the outer precoder is a semi-unitary matrix and is not sensitive to a backhaul delay. Technical solutions of the present invention are mainly applied to a process of processing interference in a massive multiple-input multiple-output system.

Method, apparatus, and system for processing interference in massive multiple-input multiple-output system

The present invention provides a data stream processing method, device, and system. The data stream processing method includes: using a precoding parameter to perform precoding processing on an lto-be-sent data stream of a current ktransmitting device, where the lto-be-sent data stream includes a lattice point data stream mapped to a lattice grid; and sending the precoded lto-be-sent data stream to a kreceiving device, where both l and k are positive integers. The technical solutions in the embodiments of the present invention can be helpful for filtering out interference, exactly complies with an actual processing procedure of an interfering data stream, and have strong practicability.

Data stream processing method, device, and system

An apparatus and a system for transmitting channel state information acquires channel state information of a channel between a mobile terminal and two or more cooperative base stations. The apparatus quantizes the channel state information separately by using a preset single-cell codebook used for quantizing the channel between the mobile terminal and each one of the two or more cooperative base stations. The apparatus acquires united codeword indexes of the quantized channel state information in the single-cell codebook; and transmits the united codeword indexes of the quantized channel state information in the single-cell codebook.

Method, apparatus and system for transmitting channel state information

Disclosed are systems and methods which provide high bandwidth data communication with respect to a large coverage area using smart antenna and/or directional antenna (referred to herein as multi-beam antenna) technology. Circuitry may be provided at a WLAN AP to provide selection of particular antenna beams used in the downlink and/or uplink, control of multicast transmission, control of unicast transmission, and to provide antenna pattern shaping techniques. Embodiments implement multi-beam antenna technology with little or no hardware modifications to AP circuitry. Other embodiments implement multi-beam technology using radio front-end and/or radio hardware modifications to AP circuitry. Various diversity techniques may be implemented, such as selection diversity, maximum ratio combining, and equal gain combing. To provide desired antenna pattern shaping, phase offsets with respect to a signal as transmitted in each antenna beam may be employed.

WLAN access point with extended coverage area

A method for sensing channel availability in a wireless network includes receiving a measurement request message which includes a channel interval list. A first channel interval in the list includes information associated with a first starting channel number, a first number of channels, and first linkage information of the channel interval list. The method includes processing information associated with the message, generating a first list of contiguous channels, and performing at least first channel measurement to determine a first channel availability for each of the first list of contiguous channels. The method also includes determining whether the channel interval list further includes a second channel interval that needs to be processed based on at least first linkage information, and if needed, generating a second list of contiguous channels and performing at least second channel measurement to determine a second channel availability for each of the second list of contiguous channels.

Method and system for sensing discontiguous channels in a wireless network

Method and apparatus for channel simulation is disclosed. The claimed invention provides method and apparatusto simulate a propagation channel, particularly a multiple-input-multiple-input (MIMO) channel. The claimed invention further provides a method and apparatus for efficient optimization of antenna by the enhanced channel simulation. The claimed invention takes both antenna characteristics and channel characteristics as inputs, and output time-varying channel realizations to generate the system metrics as the optimization target for antenna under optimization. The claimed invention advantageous provides enhanced channel simulation to meet the accuracy requirement of antenna evaluation.

Enhanced channel simulator for efficient antenna evaluation

Systems and methods of MIMO wireless communication system with partial feedback are disclosed. In one embodiment, a base station estimates the channel matrices of the K mobile units and transmits an index value corresponding to each of the estimated channel matrix. Each mobile unit selects a power control matrix and beam-forming matrix based on the received index value and transmits its data stream to the base station using the selected power control and beam-forming matrix. A method for generating the sets of power control matrices, beam-forming matrices, and partitions of the channel matrix space is disclosed.

System and method for multi-access MIMO channels with feedback capacity constraint

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Hong Kong, China

Kin Nang Lau