7 results about "Cooperative beamforming" patented technology

This invention relates to the field of communication technology, specifically to a method and apparatus for the joint design of a virtual antenna array and beamforming for unmanned aerial vehicles (UAVs). The method includes: constructing a near-field signal transmission model based on the positions of each UAV, the distance between the communication user and the sensing target; determining an integrated sensing beamforming model based on the virtual antenna array; determining the downlink signal transmission model for the communication user and the sensing signal echo model based on the near-field signal transmission model; determining the Fisher information matrix and Cramer-Rhodes bound of the sensing target; constructing an objective function with the goal of minimizing the Cramer-Rhodes bound; and solving the objective function using an inner loop algorithm and an outer loop algorithm to determine the positions of each UAV and the beamforming matrix. This invention combines the coordinated position adjustment of multiple UAVs with cooperative beamforming to improve the communication quality for the communication user and the sensing performance for the sensing target, thereby fully utilizing the flexible deployment characteristics of UAVs.

Provided is a base station including a distributed unit and a plurality of radio units, wherein each of the plurality of radio units includes: a reception unit that receives, from the distributed unit, configuration information related to cooperative beamforming control; a control unit that, on the basis of the configuration information, enables a synchronization window for synchronizing data transmission timings among the plurality of radio units; and a transmission unit that uses the synchronization window to transmit data to a terminal.

Embodiments of the present disclosure provide a beamforming method and apparatus, and a storage medium. The method comprises: measuring first measurement signals and second measurement signals, and determining measurement results; on the basis of the measurement results, determining serving transmitting / receiving points, coding matrix coefficients of the serving transmitting / receiving points, and / or beamforming coefficients of a network device; and transmitting the coding matrix coefficients of the serving transmitting / receiving points and / or the beamforming coefficients of the network device to the network device, wherein the first measurement signals comprise measurement signals transmitted from the network device by means of transmitting / receiving points, and the second measurement signals are measurement signals transmitted from the transmitting / receiving points. According to the present disclosure, the second measurement signals transmitted to a terminal by the transmitting / receiving points are increased, so that the terminal may distinguish the measurement signals, and the terminal may voluntarily select the serving transmitting / receiving points on the basis of the measurement results and report related information of cooperative beamforming to a network side, thereby improving the beamforming performance of a system, and reducing the measurement overhead.

The present application belongs to the field of wireless communications. Disclosed are a communication method and apparatus for a Co-BF sounding process, a device, and a medium. The method is executed by a first access point device, and the method comprises: receiving a first frame sent by a second access point device, wherein the first frame is used for indicating a first state; the first state is a state in which the second access point device receives a compressed beamforming / channel quality indication report within one or more coordinated beamforming sounding sequences; the first access point device is an initiating access point device within the one or more coordinated beamforming sounding sequences; and the second access point device is a responding access point device within the one or more coordinated beamforming sounding sequences.

This invention relates to the field of wireless communication technology, specifically to a method and system for cooperative precoding of uplink and downlink in full-duplex multi-user communication. The method includes: establishing a full-duplex multi-user MIMO communication system; constructing uplink and downlink signal models for the communication system; constructing a cooperative precoding uplink and downlink cooperative beamforming optimization model, and establishing a model for maximizing total spectral efficiency under uplink and downlink transmit power constraints; based on the weighted minimum mean square error criterion, introducing auxiliary variables to transform the total spectral efficiency maximization model into an equivalent outer-layer iterative total spectral efficiency maximization problem, and iteratively solving it; establishing an alternating iterative framework for uplink and downlink beamforming matrices, and solving to obtain the uplink and downlink beam matrices. This invention improves the total spectral efficiency of multi-user communication systems in full-duplex communication mode.

This disclosure provides methods, devices, and systems for a unified frame transmission sequence for coordinated beamforming and coordinated spatial reuse. Some aspects more specifically relate to a first access point (AP) that transmits an invite frame within a shared transmission opportunity of the first AP. The invite frame may indicate initiation of a frame transmission sequence associated with a coordinated AP scheme of a plurality of coordinated AP schemes. The first AP and the second AP may communicate one or more frames within the shared transmission opportunity in accordance with the frame transmission sequence. The one or more frames may include information that coordinates downlink physical layer protocol data unit (PPDU) transmissions between the first AP and one or more second APs. In response to communicating the one or more frames, the first AP, a second AP, or both may transmit a coordinated downlink PPDU transmission.

The present application belongs to the field of wireless communications, and discloses a communication method, apparatus, and device, a medium, and a program product. The method is executed by a first station. The method comprises: sending a first frame, the first frame indicating coordinated beamforming sounding.