SPS PDSCH Overlap Resolution via Configuration Index Priority
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Solution Overview
Problem
In the NR communication system, there is no clear scheme to determine which SPS PDSCHs can be transmitted when multiple SPS PDSCHs overlap, leading to unclear transmission and feedback performance.
Innovation Solution
A method to determine SPS PDSCHs capable of being transmitted by considering configuration indexes and time domain positions, ensuring that SPS PDSCHs without direct or indirect overlap are transmitted, and generating HARQ-ACK feedback accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SPS PDSCHs are configured simultaneously, then the system can support more diverse service requirements and improve resource utilization, but it leads to overlapping transmissions that create ambiguity in determining which PDSCHs can be transmitted and decoded
Solution Approach 1:
The patent applies local quality by assigning different priorities to different SPS configurations based on their configuration indexes. When overlapping occurs, the system selectively processes PDSCHs with higher priority (smaller configuration indexes) while excluding or marking those with lower priority. This local differentiation in quality/priority resolution allows the system to maintain multiple SPS configurations adaptably while ensuring reliable transmission by providing a clear, deterministic rule for handling overlaps.
2Device complexity
If the UE demodulates only the SPS PDSCH with the smallest configuration index among overlapping ones, then decoding complexity is reduced and a clear rule is established, but other non-overlapping SPS PDSCHs among the multiple overlapping configurations may be lost or not transmitted
Solution Approach 1:
The patent extracts and processes only the relevant subset of SPS PDSCHs that need to be handled during overlap resolution. By identifying and extracting PDSCHs with smaller configuration indexes from the overlapping set, the system applies a clear selection rule that reduces decoding complexity. Simultaneously, the extracted PDSCHs are processed through priority-based mechanisms that ensure transmission efficiency is maintained by not losing non-overlapping PDSCHs.
Solution Approach 2:
The patent introduces dynamic priority-based processing where the handling of SPS PDSCHs changes based on their configuration indexes and overlap relationships. The system dynamically determines which PDSCHs to decode and transmit by evaluating their relative priorities, allowing flexible adaptation to different overlap scenarios while maintaining clear operational rules.
3Reliability
If a clear scheme is established for determining transmittable SPS PDSCHs among overlaps, then transmission reliability improves, but the system complexity increases due to additional determination logic
Solution Approach 1:
The patent applies preliminary action by pre-establishing priority relationships among SPS configurations through configuration indexes before any overlap occurs. The network configures different priorities in advance, and the UE uses these pre-defined priorities to quickly resolve overlaps without complex real-time determination logic. This preliminary setup simplifies the actual transmission decision-making process while ensuring reliable transmission through deterministic priority-based selection.
Data Source
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AI summary
An information receiving method, an information sending method and devices are disclosed. The information receiving method includes: in case that the user equipment is configured with multiple SPS PDSCHs and there are overlaps among multiple SPS PDSCHs on time domain positions in a first slot, determining, according to SPS configuration indexes of the SPS PDSCHs and the time domain positions of the SPS PDSCHs, some SPS PDSCHs whose time domain positions do not overlap, from the multiple SPS PDSCHs in the first slot; and, for the multiple SPS PDSCHs in the first slot, decoding, by the user equipment, only the some SPS PDSCHs of the multiple SPS PDSCHs.