SRS Guard Period Collision Handling During PUSCH Uplink

Solution Overview

Problem

Collisions between the sounding reference signal (SRS) guard period and the physical uplink shared channel (PUSCH) transmission occur due to antenna switching requirements, leading to resource wastage and transmission delays in wireless communication systems.

Innovation Solution

The proposed solution involves identifying the collision and applying priority rules to determine whether to transmit the SRS or PUSCH, ensuring that uplink communications are not disrupted by refraining from transmitting the lower-priority transmission during antenna switching.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If antenna switching is performed for SRS transmission, then channel sounding capability is improved, but collision with PUSCH transmission occurs causing resource wastage and transmission delays

Engineering Contradiction:

Improvechannel sounding capabilityVSAvoidtransmission delays

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The base station performs preliminary scheduling of PUSCH transmissions, anticipating potential collisions with SRS guard periods. By proactively identifying and avoiding collision time slots in the scheduling decision, the system prevents transmission delays before they occur, maintaining both channel sounding capability and uplink transmission timing.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where the base station receives information about SRS transmission requirements and PUSCH scheduling status, then adjusts scheduling decisions accordingly. This closed-loop approach enables dynamic conflict resolution, ensuring that channel sounding operations do not cause PUSCH transmission delays.

Inventive Principle:

Principle #23Feedback

2Reliability

If antenna switching is performed for SRS transmission, then channel sounding capability is improved, but network resource wastage occurs due to collision

Engineering Contradiction:

Improvechannel sounding capabilityVSAvoidnetwork resource wastage

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The base station performs preliminary scheduling of PUSCH transmissions, anticipating potential collisions with SRS guard periods. By proactively identifying and avoiding collision time slots in the scheduling decision, the system prevents resource wastage before it occurs, maintaining both channel sounding capability and uplink transmission timing.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where the base station receives information about SRS transmission requirements and PUSCH scheduling status, then adjusts scheduling decisions accordingly. This closed-loop approach enables dynamic conflict resolution, ensuring that channel sounding operations do not cause PUSCH transmission delays.

Inventive Principle:

Principle #23Feedback

3Reliability

If collision avoidance measures are implemented, then transmission reliability is improved, but scheduling complexity increases

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidscheduling complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The base station performs preliminary scheduling of PUSCH transmissions, anticipating potential collisions with SRS guard periods. By proactively identifying and avoiding collision time slots in the scheduling decision, the system prevents transmission delays before they occur, maintaining both channel sounding capability and uplink transmission timing.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where the base station receives information about SRS transmission requirements and PUSCH scheduling status, then adjusts scheduling decisions accordingly. This closed-loop approach enables dynamic conflict resolution, ensuring that channel sounding operations do not cause PUSCH transmission delays.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12363703B2Collision handling for sounding reference signal guard period and a physical uplink shared channel transmission

Publication Date: 2025.07.15 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a collision between a physical uplink shared channel (PUSCH) transmission and a guard period of a sounding reference signal (SRS) transmission, wherein the SRS transmission includes a first SRS transmission and a second SRS transmission, the second SRS transmission uses a first set of one or more antenna ports of the UE, and the PUSCH transmission uses a second set of one or more antenna ports of the UE; and perform an action to mitigate the collision based at least in part on identifying the collision. Numerous other aspects are provided.