13 results about "Channel statistics" patented technology

Methods, systems, and devices for wireless communication are described. In some systems, a user equipment (UE) can measure a received power of one or more reference signals (such as channel state information (CSI) reference signals (CSI-RSs) or synchronization signal blocks (SSBs)) transmitted by a base station for a beam management procedure. The UE can determine, based on performing the beam management procedure, a set of channel statistics associated with a channel used by the base station to transmit the one or more reference signals. The UE can transmit, to the base station, a report including at least a received indication of the one or more reference signals and the set of channel statistics. The base station can select, based at least on the indication of the received power and the set of channel statistics, a beam and a channel for communication with the UE.

Apparatuses, methods, and systems are disclosed for determining channel statistics for clear channel assessments. One method includes determining, by an apparatus, channel statistics corresponding to a plurality of listen-before-talk channel access types, a plurality of channel access priorities, a plurality of frequency ranges, or some combination thereof. The channel statistics indicate whether clear channel assessments for transmission on a shared resource are successful. The method includes transmitting information corresponding to the channel statistics to a network device.

Apparatus, methods, and systems for determining channel statistics for use in clear channel assessment are disclosed. A method (900) includes determining (902), by an apparatus (102), channel statistics corresponding to a plurality of listen-before-talk channel access types, a plurality of channel access priorities, a plurality of frequency ranges, or some combination thereof. The channel statistics indicate whether a clear channel assessment for a transmission on a shared resource was successful. The method (900) includes sending (904) information corresponding to the channel statistics to a network device.

The invention relates to a broadcast channel statistical multiplexing method based on data file broadcast timeliness, which comprises the following steps of: dividing different logic channels according to data file types, and setting a transmission timeliness requirement and a timeliness achievement coefficient for the data file of each channel; counting the number of to-be-played files and the size of to-be-played data of each channel at the current moment, and calculating the pre-allocated bandwidth of each data file; correcting the pre-allocated bandwidth of each data file according to the total bandwidth of the system, and determining the final bandwidth of each data file; and each channel broadcasts the data file according to the final bandwidth allocated to each data file until the bandwidth statistical multiplexing period of the next channel. The method provided by the invention has the characteristic of accurate transmission time control for the broadcast system sensitive to the transmission time of the data file, and effectively solves the problem that the transmission time of the data file cannot be accurately controlled by the existing statistical multiplexing method, especially the problem that the transmission time of files with different sizes in the same channel cannot be accurately controlled.

Embodiments of the present disclosure disclose a gNodeB. The gNB is configured to monitor network performance metrics for each of common channel signals. The network performance metrics comprises a plurality of parameters including one or more of: cell related measurements, UE related measurements, mobility statistics, and random access channel statistics. The gNB is then configured to update gNB configuration to change periodicities of the common channel signals at least based on the monitored network performance metrics. Thus, the updated gNB configuration optimizes the energy saving gains without impacting the critical performance KPIs. Further, the dynamically changing periodicities of common channel signals in 5G NR allows the network to adapt to changing conditions and optimize performance in a data-driven manner.

A method includes acquiring, by a processor of an electronic device, information associated with channel and noise covariances. The method includes determining one or more time-domain rectangular filters based on the information associated with the channel and noise covariances. The method includes generating one or more convolutional kernels based on the one or more rectangular filters applied to the channel and noise covariances in a time-domain. The method includes generating a codebook based on the one or more convolutional kernels, the codebook comprising N codewords. Further, the method can include establishing a communication link to a gNB configured to: receive a reference signal from a user equipment; receive the codebook; calculate channel statistics using a low complexity algorithm; execute a decision tree classifier to select a codeword from the codebook stored in memory of the gNB; and apply the selected codeword as convolution kernel for channel estimation.

Apparatuses, methods, and systems are disclosed for determining channel statistics for clear channel assessments. One method includes determining, by an apparatus, channel statistics corresponding to a plurality of listen-before-talk channel access types, a plurality of channel access priorities, a plurality of frequency ranges, or some combination thereof. The channel statistics indicate whether clear channel assessments for transmission on a shared resource are successful. The method includes transmitting information corresponding to the channel statistics to a network device.

A method for determining channel state information and a communication apparatus. The method includes: sending first indication information, where the first indication information indicates a position for sending a downlink reference signal; receiving channel statistics information, where the channel statistics information is determined based on the downlink reference signal; sending second indication information, where the second indication information indicates a position for sending an uplink reference signal; and receiving the uplink reference signal, and determining channel state information based on the uplink reference signal and the channel statistics information. According to the method, a terminal device sends the uplink reference signal based on an indication of a network device, and therefore a large quantity of time-frequency resources may not be occupied. Therefore, the terminal device is not required to have high calculation complexity.

This invention relates to an echo-assisted communication statistics modeling method, belonging to the field of wireless communication technology. The method of this invention proposes a way to predict the bistatic communication CCS (including communication path loss, delay spread, horizontal wave-off spread, pitch wave-off spread, horizontal wave-on spread, and pitch wave-on spread) from the monostatic sensing SCS (including sensed path loss, delay spread, horizontal wave-off spread, pitch wave-off spread, horizontal wave-on spread, and pitch wave-on spread) of an ISAC base station. This achieves complete and accurate prediction of communication channel statistics, solving the problem that existing ISAC channel modeling techniques cannot obtain large-scale link-level communication channel characteristics based on sensed data.

The invention discloses a channel estimation method for enabling a real-time channel knowledge graph, and belongs to the technical field of information and communication. According to the invention, through low-cost and continuous communication receiving signals, channel statistical information related to a user position is extracted, the channel statistical information comprises PDP and PAP, local wireless propagation characteristics customized by a user are reflected, and corresponding frequency domain and airspace covariance matrixes have low-dimensional structured subspace characteristics; according to the invention, the blank that parameter extraction is neglected in the existing channel knowledge graph technology is filled; furthermore, two serial MMSE channel estimation schemes are designed by using a low-dimensional structured frequency-space domain covariance matrix, and compared with the existing non-customized statistical prior channel estimation method, the method has the advantage that the performance is greatly improved. Moreover, experiments show that the scheme provided by the invention still has performance advantages compared with an existing MMSE scheme based on historical sample covariance when the pilot frequency overhead is 1 / 4.

The present invention provides a joint transceiver design method based on channel statistics, belonging to the fields of wireless communications and digital signal processing. The method comprises: establishing a signal transmission model based on a multi-RIS-assisted airborne non-cellular network architecture; each aerial AP sends a detection signal to a central processing unit for weighted combined detection; performing an equivalent transformation on the optimization problem of maximizing the user weighted sum rate to obtain a matrix weighted sum variance minimization problem; alternately optimizing the weighted combined detection matrix of the central processing unit, the uplink precoding matrix of the ground user, and the phase shift matrix of the RIS, and obtaining an asymptotic expression of the optimization result using operator-valued free probability theory; and transmitting the converged uplink precoding matrix and phase shift matrix to each aerial AP, RIS, and ground user for the next round of uplink signal transmission and detection. The method can effectively improve user uplink rates while reducing the information exchange overhead between the aerial AP and the central processing unit.

Certain aspects of the present disclosure provide techniques for a beam refinement procedure. According to certain aspects, a method for wireless communications by a receive node generally includes receiving, from a transmit node, a configuration indicating channel state information reference signal (CSI-RS) resources and an indication of at least one receive beam for the receive node to use for measuring CSI-RS transmitted on the CSI-RS resources and transmitting, to the transmit node, a report indicating a value generated using a function that combines measurements taken on the CSI-RS resources.