Offset and Dynamic Feedback Validation for Slot-Aggregated PUSCH
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Solution Overview
Problem
Current wireless communication systems, particularly in LTE and NR technologies, face challenges in efficiently managing HARQ feedback and resource allocations for slot-aggregated PUSCH transmissions, leading to potential misapplication of feedback and interference issues due to lack of clear transport block identification and offset configurations.
Innovation Solution
Implementing a method where user equipment (UE) determines the validity of HARQ feedback based on delay conditions associated with dynamic feedback information (DFI) and offset configurations, allowing for selective retransmissions and avoiding misapplication of feedback, while base stations manage Type-A resource allocations to prevent DMRS puncturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic feedback information (DFI) is transmitted for slot-aggregated PUSCH transmissions, then HARQ feedback efficiency is improved, but feedback misapplication and interference issues occur due to lack of clear transport block identification
Solution Approach 1:
The patent applies local quality by introducing specific identification mechanisms (offset indicators, transport block indices) that provide localized identification information for each transport block within the slot-aggregated transmissions. This allows the system to maintain high feedback efficiency while ensuring accurate identification and application of feedback for specific transport blocks, thereby resolving the contradiction between efficiency and accuracy.
Solution Approach 2:
The patent introduces intermediary elements such as offset indicators and transport block indices that act as mediators between the DFI transmission and the transport block identification. These intermediaries carry the necessary identification information, enabling accurate feedback application without compromising the efficiency gains from DFI transmission.
2Adaptability or versatility
If offset configurations are not clearly defined, then resource allocation flexibility is improved, but interference issues and DMRS puncturing occur
Solution Approach 1:
The patent applies preliminary action by establishing clear offset configuration rules and indicators in advance, before the actual resource allocation and transmission occur. This pre-definition of offset configurations ensures that resources are allocated without interference and DMRS puncturing, while still maintaining the flexibility needed for adaptive resource management.
Solution Approach 2:
The patent uses parameter changes by introducing offset indicators that dynamically specify the timing offsets for different transport blocks. This allows the system to maintain flexibility in resource allocation while preventing interference and DMRS puncturing through controlled parameter adjustments rather than arbitrary allocations.
3Speed
If HARQ feedback validity is not validated, then processing speed is improved, but network performance deteriorates due to invalid feedback application
Solution Approach 1:
The patent applies partial action by implementing selective validation of HARQ feedback validity based on the delay condition. Rather than validating every feedback instance, the system validates only when necessary (when the delay condition is met), thereby maintaining processing speed while preventing invalid feedback application that would degrade network performance.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a plurality of slot-aggregated physical uplink shared channel (PUSCH) transmissions associated with a common transport block; receive a dynamic feedback information (DFI) transmission that includes hybrid automatic repeat request (HARQ) feedback associated with the plurality of slot-aggregated PUSCH transmissions, wherein the HARQ feedback is a HARQ acknowledgement (ACK) or a HARQ negative acknowledgement (NACK); determine whether one or more PUSCH transmissions, of the plurality of slot-aggregated PUSCH transmissions, satisfy a delay condition associated with receipt of the DFI transmission; and determine whether the HARQ feedback is valid based at least in part on whether the one or more PUSCH transmissions satisfy the delay condition. Numerous other aspects are provided.