Multi-PUSCH Repetition HARQ ID Assignment
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Solution Overview
Problem
Current wireless communication standards do not support multi-PUSCH communications with repetition, which are necessary for improving the reliability of uplink transmissions, especially in challenging conditions such as the cell edge or under severe fading.
Innovation Solution
The method involves receiving a multi-PUSCH configuration, assigning hybrid automatic repeat request (HARQ) process identifiers (HPIDs) and redundant version identifiers (RVIDs) to slots within transport blocks, and transmitting multi-PUSCH communications with repetition. The second HPID is incremented relative to the first using physical slot count, available slot count, or repetition number.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current wireless communication standards are used, then device compatibility is maintained, but reliability of uplink transmissions in challenging conditions deteriorates
Solution Approach 1:
The patent introduces dynamic HPID assignment mechanisms that adapt to different transmission scenarios. The network node can dynamically determine HPIDs based on slot counts, available resources, and repetition patterns, allowing the system to flexibly adjust to varying channel conditions and transmission requirements rather than using fixed standard-defined behaviors
Solution Approach 2:
The patent changes key parameters including HPID assignment rules, RVID allocation strategies, and the introduction of multi-PUSCH configurations with repetition. These parameter changes enable the system to optimize transmission reliability by adjusting identifiers and resource allocation based on actual channel conditions, transport block sizes, and slot availability
2Reliability
If multi-PUSCH communications with repetition are implemented, then transmission reliability improves, but system complexity increases
Solution Approach 1:
The patent segments the complex multi-PUSCH transmission process into manageable components: separate handling of HPID assignment, RVID allocation, slot counting mechanisms, and repetition patterns. Each component is independently defined and can be processed separately by the network node and UE, reducing overall system complexity while maintaining reliability benefits
Solution Approach 2:
The patent introduces intermediary elements including network node configuration messages, HPID/RVID assignment tables, and slot count trackers that mediate between the complex repetition requirements and the actual transmission execution. These intermediaries manage the complexity by providing structured interfaces and coordination mechanisms
3Ease of manufacture
If HPID assignment is based on physical slot count, then identifier management becomes systematic, but flexibility in resource allocation decreases
Solution Approach 1:
The patent implements dynamic HPID assignment that can switch between different bases including physical slot count, available slot count, and repetition number. This allows the system to use systematic slot-count-based assignment when channel conditions are stable, and switch to more flexible available-slot-based assignment when resources need to be adapted to varying conditions
Solution Approach 2:
The patent creates a universal HPID assignment framework that can operate with multiple assignment strategies (physical slot count, available slot count, repetition number) depending on the situation. This multi-functional approach allows the same system to provide both systematic identifier management and flexible resource allocation by selecting the appropriate assignment mode
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a multiple physical uplink shared channel (multi-PUSCH) configuration, assign a first hybrid automatic repeat request (HARQ) process identifier (HPID) and one or more redundant version identifiers (RVIDs) to two or more slots associated with a first transport block, and assign a second HPID and the one or more RVIDs to two or more slots associated with a second transport block. The first transport block and the second transport block may be part of a single configured grant period. Assigning the second HPID may include incrementing the first HPID using one or more of a physical slot count, an available slot count, or a repetition number. The UE may transmit a multi-PUSCH communication in accordance with the multi-PUSCH configuration. Numerous other aspects are described.