Operating a cellular multiple-input and multiple-output system including a first device having an antenna array having a plurality of antennas, and a second device having at least two antennas includes a same uplink pilot signal broadcast from each antenna of the second device, and received at the antenna array of the first device. Depending on the received same uplink pilot signal, a first set of first device receiving parameters for the antenna array is determined. From each antenna of the at least two antennas of the second device, a corresponding uplink pilot signal is sent and received at the antenna array of the first device using the first set of first device receiving parameters. At the first device, for each received uplink pilot signal, a corresponding second set of first device receiving parameters is determined depending on the plurality of received orthogonal uplink pilot signals.

An access node comprises a processor and a transceiver. The transceiver is configured to receive at least one uplink reference signal corresponding to at least one user node. The processor is configured to determine, based on the at least one uplink reference signal, an estimated position of the at least one user node relative to the access node and at least one directional parameter corresponding to the estimated position of the at least one user node relative to the position of the access node. The transceiver is configured to send at least one downlink control information to the at least one user node, the at least one downlink control information including the directional parameters.

A wireless receiver for a distributed antenna diversity receiver apparatus comprising a pre-combining component arranged to receive an RF signal from an antenna and to recover and output an information signal contained within the received RF signal, and a combined-signal component arranged to receive the recovered information signal output by the pre-combining component of the wireless receiver and a further recovered information signal from a further wireless receiver and to perform diversity combining of the recovered information signals to obtain and output an enhanced information signal. The wireless receiver further comprises a monitoring component arranged to receive intra-packet channel reliability parameters for the wireless receiver and for the further wireless receiver, determine whether to assign a new master receiver for the distributed antenna diversity receiver apparatus based on the received intra-packet reliability parameters.

Various embodiments disclosed herein provide for a base station device that can determine which layers should be mapped to codewords in a multi-layer, multi-antenna transmission. The base station device can transmit reference signals to a user equipment device, with each reference signal associated with a respective codeword to layer mapping combination, and the user equipment can send channel state information associated with each reference signal back to the base station device, and the base station device can rank each combination in terms of spectral efficiency or capacity and/or throughput. The base station device can inform the user equipment of the ranked combinations by sending a bit map with the ranked combinations to the user equipment device.

A distributed unit (DU) includes a processor and a transceiver operatively coupled to the processor. The transceiver is configured to transmit information indicating a plurality of candidate combining methods, and receive a compressed signal. The compressed signal is based on at least one of the candidate combining methods. The transceiver is further configured to receive, from a radio unit (RU), information indicating a combining method supported by the RU, from the plurality of candidate combining methods and transmit information indicating combining weights for the candidate combining method.

A transmission method for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. Each signal has been modulated according to a different modulation scheme. The transmission method applies precoding on both signals using a fixed precoding matrix, applies different power change to each signal, and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

A communication technique for conveying configuration information in a preamble in a frame is described. In this communication technique, an access point may receive a frame from a transmitting electronic device in a wireless local area network (WLAN) with media-access-control (MAC) information in a preamble and at least a packet as a payload. The MAC information may be communicated from a MAC layer to a physical layer in an interface circuit in the access point. Moreover, the MAC information may include an identifier of the receiving electronic device. Based on the identifier, the access point may select a receive antenna pattern for use when receiving the payload.

A wireless communication method and a wireless communication device. The method includes: a sending side device generating a common sequence to send to a plurality of receiving side devices; each of the plurality of receiving side devices determining a first analog weight parameter according to a receiving situation of the common sequence, and determining an antenna configuration for sending a pre-determined pilot frequency signal corresponding to the receiving side device according to the determined first analog weight parameter to send the pre-determined pilot frequency signal to the sending side device; and the sending side device determining a second analog weight parameter regarding the receiving side device according to a receiving situation of the pre-determined pilot frequency signal, and determining an antenna configuration for sending data regarding the receiving side device according to the determined second analog weight parameter to send the data to the receiving side device.

A base station device, a terminal device, and a communication method are provided, and the terminal efficiently learns information of an interference signal and reduces interference in a reception process to enhance throughput and enhance communication opportunity of each terminal device by feedback from the terminal. The base station device includes a transmission unit configured to transmit, to the terminal device, assist information of Multiuser Superposition Transmission (MUST), and the assist information includes information indicating whether precoding types of terminal devices configured with the MUST are identical to each other or different from each other. In a case that the information indicating whether the precoding types are identical to each other or different from each other indicates that the precoding types are identical to each other, transmit power is allocated at different power ratios to the terminal devices configured with the MUST, and in a case that the information indicating whether the precoding types are identical to each other or different from each other indicates that the precoding types are different from each other, the transmit power is allocated at identical power ratios to the terminal devices configured with the MUST.

Certain aspects of the present disclosure provide techniques for configuring user equipment (UE) beam switching in multiple transmission/reception points (multi-TRPs) communications. In particular, the present disclosure provides techniques for harmonizing downlink panel switching and uplink panel switching using transmission configuration indicator (TCI) codepoints, such that in some cases, a single downlink control information (DCI) may convey multiple TCI states for multiple panels or multi-TRPs. For example, a UE receives a first DCI indicating a first TCI codepoint from TCI codepoints activated by a media access control (MAC) control element (CE). The UE receives a second DCI scheduling an uplink transmission from the UE or a downlink transmission to the UE and conveying panel switching information. The UE processes the scheduled uplink transmission and/or downlink transmission based on one or more (joint) TCI states mapped to the first TCI codepoint and the panel switching information (e.g., dynamic switching bits).