Non-codebook-based precoding optimization for single-layer uplink

By measuring NZP-CSI-RS between the UE and the base station to determine a single beam and transmit PUSCH, the base station skips SRI transmission, thus optimizing the single-layer uplink precoding process of 5G NR, solving the problem of low efficiency in existing technologies, and improving communication efficiency and quality.

CN116491076BActive Publication Date: 2026-06-19QUALCOMM INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QUALCOMM INC
Filing Date
2021-05-24
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing 5G NR technology suffers from inefficiency in precoding processes in single-layer uplinks, especially in non-codebook-based precoding processes, resulting in poor communication performance.

Method used

By measuring the non-zero power channel state information reference signal (NZP-CSI-RS) between the user equipment (UE) and the base station, a single beam is determined for communication, and the physical uplink shared channel (PUSCH) is transmitted on that beam. Meanwhile, the base station skips the transmission of scheduling request indicator (SRI) and directly receives the PUSCH on the single beam, thereby optimizing the precoding process.

Benefits of technology

It improves uplink communication efficiency and performance, reduces the time overhead of non-codebook-based precoding processes, and enhances communication quality.

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Abstract

A timeline configuration for reducing non-codebook-based uplink precoding procedures. The apparatus measures NZP-CSI-RS on one or more beams from a base station. Based on the NZP-CSI-RS measurement, the apparatus determines a single beam for communication with the base station. The apparatus uses this single beam and transmits a PUSCH based on the determined single beam for communication with the base station. The apparatus can receive a configuration from the base station to perform a non-codebook-based uplink precoding procedure without SRS. The UE can use the single beam and transmit the PUSCH without further transmitting SRS based on the configuration from the base station. The apparatus can skip the transmission of SRS between NZP-CSI-RS measurement and PUSCH transmission.
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