Multi-TRP Scheduling Timeline Dropping Rules
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Solution Overview
Problem
Current wireless communication systems, particularly in LTE and NR technologies, face challenges in managing scheduling timelines for multi-transmit receive point (TRP) operations, leading to out-of-order scheduling issues that can result in resource inefficiencies and errors due to the lack of shared scheduling information between TRPs.
Innovation Solution
Implementing a method for determining and applying dropping rules and scheduling rules at user equipment (UE) and base stations to manage communication timelines, ensuring that communications are dropped or scheduled appropriately based on predefined rules to prevent out-of-order scheduling across TRPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-TRP independent scheduling is implemented to improve productivity and resource utilization, then scheduling flexibility and resource allocation efficiency are improved, but scheduling errors and out-of-order issues increase due to lack of coordination
Solution Approach 1:
The patent implements feedback mechanisms where UEs report scheduling status and timing information back to TRPs. The network entity receives scheduling information from multiple TRPs and coordinates them based on reported data, creating a closed-loop system that maintains scheduling accuracy while allowing independent TRP operation.
Solution Approach 2:
A network entity acts as an intermediary between multiple TRPs and UEs. This intermediary receives scheduling information from TRPs, processes timing relationships, and coordinates transmissions to prevent out-of-order scheduling. The intermediary enables independent TRP scheduling while maintaining overall scheduling accuracy through centralized coordination logic.
2Ease of operation
If TRPs perform independent scheduling to reduce device complexity and operational overhead, then ease of operation is improved, but scheduling errors occur due to lack of shared scheduling information
Solution Approach 1:
The patent segments scheduling functions between TRPs (independent local scheduling decisions) and a network entity (centralized coordination). Each TRP can operate independently with simplified logic, while the network entity handles cross-TRP timing coordination. This segmentation maintains scheduling correctness without requiring complex inter-TRP communication.
Solution Approach 2:
TRPs perform self-service scheduling by making independent scheduling decisions based on local conditions, reducing operational complexity. The UEs also perform self-service by monitoring and reporting scheduling status, eliminating the need for constant network coordination while maintaining scheduling accuracy through automated UE feedback.
3Adaptability or versatility
If out-of-order scheduling is permitted to improve resource utilization flexibility, then adaptability is improved, but resource inefficiencies and errors increase due to timing conflicts
Solution Approach 1:
The patent implements dynamic scheduling where the network entity adjusts timing relationships between TRPs based on real-time conditions. The system can permit out-of-order scheduling when beneficial while dynamically coordinating to prevent resource conflicts. This dynamic approach maintains both flexibility and resource efficiency by adapting to changing network conditions.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine a dropping rule relating to: a first triggering communication, of a first transmit receive point (TRP), that triggers a first timeline for a first subsequent communication of the first TRP, and a second triggering communication, of a second TRP, that triggers a second timeline for a second subsequent communication of the second TRP, wherein the dropping rule indicates one or more communications to be dropped when the first triggering communication starts after a start of the second triggering communication and the first subsequent communication starts before a start of the second subsequent communication; and drop the one or more communications based at least in part on the dropping rule. Numerous other aspects are provided.