Huawei Technologies Co., Limited

Shanghai Zhaoxin Semiconductor Co., Ltd.

Xinyu Gao

Kunpeng Liu

Xiang Gao

Weilin Wang

Yang Shi

Xiaoliang Kang

Example communication methods and apparatus are described. One example method includes receiving a reference signal from a network device by a terminal device. The reference signal has an association relationship with a weight matrix and a channel between the network device and the terminal device, a quantity of rows or columns of the weight matrix is N, and N is a positive integer less than or equal to a quantity of receive ports of the terminal device. The terminal device determines an estimation result of the weight matrix based on the reference signal, where the estimation result of the weight matrix is used by the terminal device to perform signal detection on a data signal received by the terminal device from the network device, or is used by the terminal device to precode a data signal sent by the terminal device to the network device.

Communication method and apparatus

This application provides a communication method and apparatus, so that a terminal device sends uplink pilot signals, the terminal device obtains a first delay information set based on downlink pilot signals from a network device, and the network device jointly considers the first delay information set and the uplink pilot signals to perform uplink channel estimation. The first delay information set may indicate a delay position of a strong path, and uplink channel estimation accuracy can be improved.

This application provides channel information obtaining methods and communications apparatuses, to reduce pilot overheads and a delay of obtaining channel information. In an example method, a terminal device receives one or more first reference signals on a dport of the terminal device, where the first reference signal is a reference signal from a first network device. The terminal device obtains a first channel vector hbased on the received first reference signal, where ha channel vector of a channel between the dport of the terminal device and the first network device. The terminal device receives N second reference signals on the dport of the terminal device. The terminal device obtains a second channel vector hbased on the received second reference signal.

Channel information obtaining method

A host interconnection device includes a serializing module, an analysis module, an arbitration module, a data-writing tracking module, and a data-reading tracking module. The serializing module serializes at least one first read/write request generated by at least one processing module and a second read/write request generated by a chipset module, and outputs the first read/write request or the second read/write request. The analysis module generates analysis information according to the first read/write request or the second read/write request. The arbitration module arbitrates the analysis information and snoop information, and generates arbitration information. The data-writing tracking module performs a data-writing tracking operation on the arbitration information to generate a first snoop request, a data-writing indication, and a data-writing request. The data-reading tracking module performs a data-reading tracking operation on the arbitration information to generate a second snoop request, a data-reading indication, and a data-reading request.

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Beijing, China

Xinyu Gao