SRS Spatial Relation Updates via MAC CEs for Rapid Beam Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently updating sounding reference signal spatial relation information, which is crucial for optimizing signal transmission and reception, particularly in scenarios requiring quick beam adjustments.
Innovation Solution
The implementation of MAC CEs (Medium Access Control Elements) for quickly updating spatial relation information of sounding reference signals, allowing for rapid configuration and deconfiguration of transmission beams using RRC messages and MAC CEs, particularly for aperiodic and semi-persistent SRS resources, enabling efficient intra-band CA operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional RRC messages are used to update spatial relation information, then the configuration is reliable and comprehensive, but the updating speed is slow and cannot meet quick beam adjustment requirements
Solution Approach 1:
The patent segments the spatial relation information update process into two parts: initial comprehensive configuration via RRC messages, and subsequent rapid updates via MAC CEs. This segmentation allows different mechanisms to handle different aspects of the update process, achieving both speed and reliability
Solution Approach 2:
The patent introduces MAC CEs as an intermediary mechanism between the gNB and UE for updating spatial relation information. MAC CEs act as a mediator that carries spatial relation information updates more efficiently than traditional RRC messages, enabling faster beam adjustments while maintaining configuration reliability
2Productivity
If MAC CEs are used for rapid spatial relation information updates, then the beam adjustment speed improves, but the risk of configuration errors increases
Solution Approach 1:
The patent applies preliminary action by first establishing comprehensive spatial relation information through RRC messages before using MAC CEs for rapid updates. This preliminary configuration ensures that the foundation is solid and reliable, while subsequent MAC CE updates can proceed quickly with reference to the pre-established configuration
Solution Approach 2:
The patent implements feedback mechanisms where the gNB monitors the effectiveness of spatial relation information updates and can send correction or refinement MAC CEs if needed. This feedback loop ensures that rapid updates maintain accuracy by allowing verification and correction of configuration errors
3Adaptability or versatility
If multiple spatial relation information identifiers are maintained, then the system flexibility and adaptability improve, but the information management complexity increases
Solution Approach 1:
The patent makes spatial relation information identifiers universal by designing them to work across different SRS resources, resource sets, and beam management scenarios. Each identifier can reference multiple spatial relations, and multiple identifiers can be associated with a single resource, creating a flexible many-to-many relationship that reduces the need for separate management mechanisms
Solution Approach 2:
The patent adds a new dimension to spatial relation information management by introducing MAC CE-based update mechanisms that operate in parallel with traditional RRC configuration. This creates a two-dimensional management approach where RRC handles initial setup and MAC CEs handle dynamic updates, distributing the complexity across different operational dimensions
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for updating SRS spatial relation information. One method includes transmitting first information indicating SRS spatial relation information for an SRS resource. The SRS spatial relation information includes: SRS spatial relation information identifiers; and an SRS spatial relation information reference signal corresponding to each SRS spatial relation information identifier. The method includes transmitting second information indicating an update to the SRS spatial relation information. The second information includes: a serving cell identifier; a bandwidth part identifier; one or more SRS resource identifiers, one or more SRS resource set identifiers, or a combination thereof; and one or more SRS spatial relation information identifiers. Each of the one or more SRS resource identifiers corresponds to each of the one or more SRS spatial relation information identifiers.