Uplink Grant Collision Handling via Priority Interruption
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Solution Overview
Problem
Wireless communication systems face challenges in handling collisions between high-priority and low-priority uplink transmissions when resource grants overlap, leading to inefficiencies and potential conflicts in scheduled communications.
Innovation Solution
The method involves determining whether a device can interrupt low-priority uplink communications to transmit high-priority communications by generating overlapping resource grants, allowing the device to switch from one grant to another based on priority and capability, thereby optimizing resource usage and resolving collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If overlapping resource grants are generated to improve resource efficiency, then resource utilization is improved, but collision conflicts between transmissions increase
Solution Approach 1:
The patent changes the parameter of grant priority levels, introducing high-priority and low-priority classifications. When a high-priority grant overlaps with a low-priority grant, the device interrupts the low-priority transmission to transmit the high-priority data, resolving the contradiction by parameter-based differentiation.
Solution Approach 2:
The patent introduces dynamic interruption capability where the transmission mode can switch between continuous and interrupted based on priority. The device dynamically determines whether to interrupt low-priority transmissions when high-priority transmissions are scheduled, making the system adaptive rather than static.
2Productivity
If the device interrupts low-priority uplink communications to transmit high-priority communications, then transmission priority is improved, but device complexity increases
Solution Approach 1:
The device autonomously determines whether to interrupt low-priority transmissions based on received grants without requiring complex base station coordination. The UE self-manages the interruption decision by comparing grant priorities and timing, reducing overall system complexity while maintaining priority transmission capability.
Solution Approach 2:
The base station pre-configures multiple grants with different priorities and timing relationships. The device uses these pre-defined grant structures to make interruption decisions without real-time complex calculations, simplifying the decision-making process while ensuring priority transmission.
3Productivity
If the base station schedules multiple uplink grants with overlapping resources, then resource utilization is improved, but scheduling complexity increases
Solution Approach 1:
The patent segments grants into high-priority and low-priority categories with distinct timing relationships. The base station schedules grants in segments (e.g., first grant for low-priority, second grant for high-priority) with defined overlap patterns, making the scheduling process more manageable and less complex.
Solution Approach 2:
The patent applies different scheduling rules to different grant types. Low-priority grants follow one scheduling pattern while high-priority grants follow another, with local quality differentiation in terms of priority indicators and interruption permissions. This localized rule application reduces overall scheduling complexity.
Data Source
AI summary
Aspects described herein relate to configuring devices with multiple uplink grants, where the devices may be able to determine whether to interrupt communications of one uplink grant for communications of another uplink grant.