Autonomous Scheduling Parameters for Dynamic Uplink Transmissions
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Solution Overview
Problem
Current wireless communication systems face challenges in dynamically scheduling uplink transmissions, particularly in efficiently determining scheduling parameters for multiple-access technologies like LTE and NR, which limits flexibility and resource allocation in mobile broadband access.
Innovation Solution
User equipment (UE) autonomously determines scheduling parameters for dynamically scheduled physical uplink shared channel (PUSCH) transmissions, with uplink control information (UCI) multiplexed onto each transmission to indicate these parameters, allowing for flexible resource allocation and independent determination of HARQ process numbers, redundancy versions, and new data indicators without relying on base station signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station signals all scheduling parameters for dynamically scheduled PUSCH transmissions, then the UE has complete scheduling information, but the DCI message size increases and flexibility is reduced
Solution Approach 1:
The patent extracts the scheduling parameters (HARQ process number, redundancy version, new data indicator) from the DCI message, making them optional elements that the UE can determine autonomously. This extraction reduces the mandatory signaling overhead while maintaining scheduling reliability through alternative determination methods.
Solution Approach 2:
The UE is enabled to self-determine scheduling parameters without requiring explicit base station signaling. The UE uses autonomously determined parameters to configure PUSCH transmissions, effectively serving itself by deriving necessary scheduling information from context rather than relying solely on base station commands.
2Adaptability or versatility
If the UE autonomously determines scheduling parameters, then flexibility and resource utilization improve, but the UE processing complexity increases
Solution Approach 1:
The UE performs self-service by autonomously determining scheduling parameters such as HARQ process numbers, redundancy versions, and new data indicators. This self-determination enables flexible resource allocation and non-consecutive HARQ process usage while the UE manages its own scheduling logic without base station intervention.
Solution Approach 2:
The scheduling system becomes dynamic with the UE able to adaptively select HARQ process numbers and redundancy versions based on current transmission needs rather than following fixed base station assignments. This dynamic autonomous determination allows non-consecutive HARQ processes and flexible redundancy version selection.
3Measurement precision
If multiple scheduling parameters are signaled for each PUSCH transmission, then scheduling precision is maintained, but the bit size of DCI messages increases
Solution Approach 1:
The patent extracts essential scheduling parameters from the DCI message, allowing the UE to determine them autonomously. This extraction reduces the number of bits that must be explicitly signaled while maintaining the precision and accuracy of scheduling through alternative determination mechanisms.
Solution Approach 2:
The patent changes the approach to parameter transmission from explicit signaling to implicit determination. By changing how scheduling parameters are conveyed (from direct bit signaling to autonomous derivation), the system maintains scheduling precision while reducing DCI message bit size.
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 downlink control information (DCI) message that dynamically schedules one or more physical uplink shared channel (PUSCH) transmissions. The UE may autonomously determine a set of scheduling parameters for the one or more PUSCH transmissions that are dynamically scheduled by the DCI message. The UE may transmit the one or more PUSCH transmissions based at least in part on the set of scheduling parameters. Furthermore, in some aspects, uplink control information (UCI) may be multiplexed onto each of the one or more PUSCH transmissions. For example, the UCI multiplexed onto each PUSCH transmission may indicate the set of scheduling parameters autonomously determined for the respective PUSCH transmission. Numerous other aspects are provided.