Semi-Persistent Scheduling Activation via RNTI Identity in 5G Multi-TRP
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Solution Overview
Problem
In 5G NR systems, the base station faces challenges in handling Semi-Persistent Scheduling (SPS) or Configured Scheduling (CS) configurations that span across different Transmission Configuration Indications (TCIs) associated with different Physical Cell Identities (PCIs), particularly in Multi-TRP scenarios, leading to non-dynamic scheduling issues.
Innovation Solution
A method is introduced where a node receives signaling and information blocks to determine whether to activate or deactivate SPS or CS based on the association of Control Resource Sets (CORESETs) with specific identities, suspending or resuming transmissions when the Unified TCI changes between serving and non-serving cell PCIs, optimizing resource usage and system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the base station updates QCL parameters dynamically to handle Multi-TRP scenarios, then the adaptability of scheduling is improved, but the device complexity and signaling overhead increase
Solution Approach 1:
The patent segments the QCL parameter updates by introducing separate RNTI identifiers (first RNTI for serving cell, second RNTI for non-serving cell) to differentiate between different TRP scenarios. This segmentation allows the system to handle Multi-TRP configurations without requiring complete redesign of the scheduling mechanism, thus improving adaptability while controlling complexity.
Solution Approach 2:
The patent applies preliminary action by pre-configuring multiple RNTI identifiers and their associated QCL parameter sets before actual scheduling occurs. The UE is pre-informed about which RNTI corresponds to which TRP configuration, enabling rapid switching between serving and non-serving cell modes without real-time complex processing.
2Adaptability or versatility
If SPS or CS configurations span multiple TCI states with different PCIs, then the versatility of resource allocation is improved, but the reliability of scheduling activation deteriorates
Solution Approach 1:
The patent introduces RNTI identifiers as intermediaries between the scheduling configuration and the actual resource allocation. The RNTI acts as a mediator that carries information about which TRP (serving or non-serving) the configuration applies to, enabling reliable disambiguation even when configurations span multiple TCI states with different PCIs.
Solution Approach 2:
The patent applies local quality by assigning different properties (RNTI identifiers) to different parts of the scheduling configuration based on their association with specific TRPs. Each SPS or CS configuration is locally tagged with the appropriate RNTI, allowing the UE to reliably identify whether a configuration pertains to serving cell or non-serving cell without affecting the overall versatility of resource allocation.
3Adaptability or versatility
If the system supports both serving cell and non-serving cell PCIs in SPS/CS configurations, then the adaptability is improved, but the difficulty of detecting and measuring configurations increases
Solution Approach 1:
The patent uses RNTI identifiers as distinctive markers (analogous to color changes) that make it easy for the UE to detect and differentiate between configurations associated with serving cell versus non-serving cell. The RNTI acts as a recognizable tag that simplifies the detection process, allowing the UE to quickly identify the type of configuration without complex analysis of the configuration contents themselves.
Data Source
AI summary
The node firstly receives a first signaling, the first signaling indicating scheduling activation, the first signaling being identified by an RNTI of first type; and receives a first information block, the first information block being used to determine whether at least one CORESET is associated with a first identity or a second identity; and determines whether to perform the scheduling activation indicated by the first signaling in at least first time-frequency resource set according to at least the first information block; performs a first operation in the at least first time-frequency resource set upon determination of performing the scheduling activation indicated by the first signaling, or doesn't perform the first operation upon determination of not performing the scheduling activation indicated by the first signaling; each of the first identity and the second identity identifies one cell. This application improves the criterion for semi-persistent transmission suspension to optimize system performance.