UE Scheduling Mode Switching for Uplink Slot Collision Avoidance
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Solution Overview
Problem
In wireless communication systems, baseband processing durations in energy-efficient scheduling modes can overlap with uplink slots, leading to conflicts that prevent simultaneous downlink and uplink communications, particularly when operating in wideband bandwidth parts.
Innovation Solution
User equipment (UE) determines whether to enter an energy-efficient scheduling mode based on uplink message priorities or capabilities, avoiding overlaps by refraining from entering this mode during uplink slots or applying specific configuration information based on processing duration criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the UE operates in energy-efficient scheduling mode with lower throughput threshold, then power consumption is reduced, but baseband processing duration extends and collides with uplink slots
Solution Approach 1:
The UE dynamically switches between operating modes (energy-efficient mode and normal mode) based on real-time conditions. When uplink slots are detected, the UE transitions from energy-efficient mode with extended processing duration to normal mode with shorter processing duration, allowing adaptive adjustment of processing timeline to avoid collisions while maintaining energy efficiency when possible
Solution Approach 2:
The patent changes the throughput threshold parameter dynamically. The network configures multiple throughput thresholds, and the UE selects appropriate thresholds based on current operating conditions. When collision avoidance is needed, the UE switches to a higher throughput threshold that corresponds to shorter processing duration, thereby changing the processing timeline parameter to resolve the contradiction
2Loss of energy
If the UE enters energy-efficient scheduling mode, then energy efficiency is improved, but conflicts arise preventing simultaneous downlink and uplink communications
Solution Approach 1:
The UE performs preliminary detection of uplink slot timing before entering energy-efficient scheduling mode. By checking whether uplink slots are scheduled in advance, the UE can determine whether it is safe to enter the energy-efficient mode without causing collisions. This preliminary action prevents reliability issues by avoiding mode entry when conflicts would occur
Solution Approach 2:
The network provides feedback through downlink control information indicating uplink slot allocations and throughput threshold configurations. The UE uses this feedback to determine appropriate operating modes and switch between modes accordingly, ensuring that energy-efficient mode is only entered when it will not conflict with uplink communications, thus maintaining reliability
3Productivity
If the UE uses lower throughput threshold for processing, then processing duration increases, but this causes overlap with uplink time resources
Solution Approach 1:
The UE dynamically adjusts the processing timeline based on detected uplink slot positions. When uplink slots are present in the schedule, the UE switches to a higher throughput threshold that provides a shorter processing timeline, avoiding overlap. When no uplink slots are scheduled, the UE can use the lower throughput threshold with extended processing duration for energy efficiency, making the timeline dynamic rather than fixed
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. The described techniques may enable a user equipment (UE) prevent a baseband processing duration associated with an energy efficient scheduling mode of one or more wideband communication resources from overlapping with one or more uplink slots reserved for uplink communications. For example, the UE may refrain from entering the energy efficient scheduling mode for a configured duration or until the UE transmits one or more uplink messages in the one or more uplink slots. In some examples, the UE may determine whether to enter the energy efficient scheduling mode based on a priority associated with the uplink messages or based on a capability of the UE to perform uplink and downlink communications in different power states.