Beijing Zhigu Rui Tuo Tech Co., Ltd

Samsung Electronics Co., Ltd.

Future Wei Technologies, Inc.

Nec (china) Co., Ltd.

Chenyang Yang

Weicai Huang

Yafei Tian

Gang Wang

Yingyang Li

Chengjun Sun

Anthony C K Soong

Fang Yuan

Mazin Ali Al-Shalash

Ming Lei

Yifan Xue

Dongdong Li

Pan Chen

Dandan Wang

Guodong Zhao

Zhilin Chen

Shengqian Han

Embodiments of the present application disclose a precoding method, an information sending method, and apparatuses thereof. The precoding method comprises: acquiring first information associated with a receiving matrix of at least one user equipment associated with a base station; and determining a first transmitting precoding matrix of the base station according to at least the receiving matrix of the at least one user equipment. According to the methods and apparatuses in the embodiments of the present application, a transmitting precoding matrix of a base station is designed according to a receiving matrix of a user equipment, which can reduce inter-cell interference.

Precoding method, information sending method, and apparatuses thereof

A pilot allocation method for a multi-antenna system and a pilot allocation apparatus are provided. The method comprises: determining the number of pilots to be allocated and the number of training cycles at least according to the number of users in each cell, and determining a pilot allocation scheme of the each cell according to the number of pilots to be allocated and the number of training cycles. The determining a pilot allocation scheme of the each cell can comprise determining pilots allocated for users in the l-th cell used during each training cycle, and during each training cycle, allocating pilots of at least the k-th user of the l-th cell to different users in other cells of the system. By allocating pilots allocated to a desired user to different users during each training cycle, pilot contamination can be randomized during several different continuous training cycles, thereby providing a basis for the later accurate channel estimation.

Pilot allocation method for multi-antenna system and pilot allocation apparatus

Embodiments of the present application disclose a communication method and a communication node for device-to-device (D2D) direct communication, and relate to the field of D2D technologies. The method comprises: receiving, by a first node, an interference signal from an interference node; and sending, by the first node, the interference signal and a to-be-sent signal in a manner in which the interference signal and the to-be-sent signal can be received by at least one second node. The communication method and the communication node in the embodiments of the present application can effectively reduce interference of a cellular network on D2D communication. By using the communication method and the communication node in the embodiments of the present application, a base station resource does not need to be consumed, and signaling interactions are fewer, which help to improve the resource utilization.

Communication method and communication node for device-to-device direct communication

Examples of the present application provide an interference cancellation method, system, device and a UE. The interference cancellation method of a communication network including a plurality of User Equipments (UEs) and Base Stations (BSs) includes: acquiring a Signal to Noise Ratio (SNR) and Interference to Noise Ratio (INR) of a downlink signal detected by a first UE and a SNR and INR of a downlink signal detected by a second UE, respectively through a first BS and a second BS; and notifying the first BS and the second BS of a transmission mode of associated UEs, wherein the first UE is located in a cell served by the first BS, and the second UE is located in a cell served by the second BS.

Interference cancellation method, system, device and UE

The present invention relates to method and apparatus for channel direction information feedback in a heterogeneous system. According to an embodiment of the present invention, a method for channel direction information feedback in a heterogeneous system comprises: determining, for a user equipment, total feedback bits for quantization of channel direction information, based on a trade off between accuracy of channel direction information quantization and reliability of uplink feedback transmission on a predetermined uplink feedback resource, wherein coordinated multi-point transmission between a local base station and a cross base station is performed for the user equipment in the heterogeneous system; and notifying said user equipment of said total feedback bits for quantization of channel direction information that will be conveyed on said predetermined uplink feedback resource. The embodiments of the present invention further relate to corresponding base station, user equipment and computer program product.

Method and apparatus for adaptive channel direction information feedback in a heterogeneous system

A system and method for cooperative spectrum sensing in cognitive radio (CR) systems is provided. A method for CR user operation includes coordinating with partner CR users to share spectrum sensing information, combining spectrum sensing information from partner CR users, and determining if a transmission opportunity exists based on the combined spectrum sensing information. The method also includes transmitting a message to a CR user if the transmission opportunity exists, and storing the message if the transmission opportunity does not exist.

System and method for cooperative spectrum sensing in cognitive radio systems

Growing community of inventors

Beijing, China

Chenyang Yang