Collision Resolution for SPS and Dynamic A/N Feedback Messages
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently resolving collisions between acknowledgement (ACK) or negative acknowledgement (NACK) feedback messages, particularly between semi-persistent scheduling (SPS) A/N feedback messages and dynamic A/N feedback messages.
Innovation Solution
The proposed solution involves a user equipment (UE) and a network entity that manage resource associations for SPS and dynamic A/N feedback messages. The UE receives indications of resource sets for both types of messages and performs actions to mitigate collisions, such as deferring SPS A/N feedback messages to secondary resource sets and multiplexing with dynamic A/N feedback messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SPS A/N feedback messages are deferred to secondary resource sets to avoid collisions, then collision resolution between SPS and dynamic A/N feedback messages is improved, but transmission latency increases due to the deferral mechanism
Solution Approach 1:
The system performs preliminary identification of potential resource collisions between SPS and dynamic A/N feedback messages before transmission occurs. By detecting overlapping resource allocations in advance, the system can proactively apply resolution mechanisms (such as deferring SPS messages or multiplexing) to prevent collisions, thereby improving reliability while minimizing latency through early intervention rather than reactive handling.
2Productivity
If multiple A/N feedback messages are multiplexed together, then resource utilization efficiency is improved, but message complexity and processing overhead increase
Solution Approach 1:
The system merges multiple A/N feedback messages (SPS and dynamic) into a single multiplexed transmission when resource collisions are detected. This combining approach improves resource utilization efficiency by consolidating multiple feedback transmissions into one resource allocation, reducing overall signaling overhead and improving productivity while managing complexity through standardized multiplexing procedures.
3Speed
If SPS A/N feedback messages are transmitted on primary resource sets, then transmission speed is maintained, but resource collisions with dynamic A/N feedback messages occur
Solution Approach 1:
The system dynamically adjusts the resource allocation for SPS A/N feedback messages based on real-time detection of potential collisions with dynamic A/N feedback messages. When collisions are identified, the system transitions SPS messages from primary resource sets to secondary resource sets, creating a dynamic resource allocation strategy that maintains transmission speed when possible while ensuring collision avoidance when necessary, thus balancing speed and reliability.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a first set of resources associated with a semi-persistent scheduling (SPS) acknowledgement/negative acknowledgement (A/N) feedback message, wherein the SPS A/N feedback message is deferred to a second set of resources by the UE. The UE may receive an indication of a third set of resources associated with a dynamic A/N feedback message, wherein the second set of resources and the third set of resources are associated with a collision. The UE may perform an action based on the second set of resources and the third set of resources being associated with the collision. The UE may transmit at least one of the SPS A/N feedback message or the dynamic A/N feedback message based on performing the action. Numerous other aspects are described.