Sidelink feedback preemption and uplink multiplexing in wireless communications

By introducing a Sidelink Preemption Indicator (SPI), sidelink resources can be flexibly allocated, solving the problem of insufficient sidelink resource utilization in wireless communication systems and improving system reliability and efficiency, especially in high-priority or low-latency communication.

CN116097854BActive Publication Date: 2026-04-24QUALCOMM INC
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Patent Information

Application Number
CN202180061897.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2021-09-17
Filing Date
2021-09-20
Publication Date
2026-04-24
Estimated Expiration
2041-09-20

AI Technical Summary

Technical Problem

In existing wireless communication systems, there are shortcomings in the efficient allocation and use of sidelink resources, which affects network efficiency, reliability and latency. In particular, it is difficult to achieve effective sidelink feedback and uplink multiplexing in high-priority communication and low-latency scenarios.

Method used

By introducing a Sidelink Preemption Indicator (SPI), the UE can determine whether to send or preempt sidelink feedback. Based on factors such as communication priority and RSRP measurement, it can flexibly allocate sidelink resources, identify and preempt the sidelink feedback resource set, and support the sending or cancellation of hybrid automatic repeat request (HARQ) acknowledgment/negative acknowledgment (ACK/NACK) feedback.

Benefits of technology

It improves the reliability and efficiency of wireless communication systems, especially in high-priority or low-latency communication, enhances the communication efficiency of sidelinks and access links for UEs, and enables flexible allocation and conflict handling of sidelink resources.

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Abstract

Methods, systems, and devices for wireless communication are described in which multiple devices can implement sidelink communications for direct device-to-device information exchange. Such devices (e.g., user equipment (UE) devices) can be configured with resources for sidelink communications and can monitor for a sidelink preemption indication (SPI) from a base station and determine whether one or more sidelink communications are preempted based on the SPI. The sidelink communications can include feedback communications transmitted using sidelink feedback resources. Based on an indication in the received SPI, it can be determined whether to transmit sidelink feedback. The sidelink feedback can be transmitted to one or more other sidelink devices or a base station, and preemption of the sidelink feedback can be determined based on one or more parameters associated with the sidelink communications, associated with the SPI, or any combination thereof.
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