Configured Grant Resource Selection for Uplink Small Data
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Solution Overview
Problem
Current systems face challenges in efficiently using configured grant resources for uplink small data transmissions in the RRC_INACTIVE state, leading to potential delays and inefficient resource utilization due to limitations in handling data segments that exceed the capacity of pre-configured transmission blocks.
Innovation Solution
The method involves selecting multiple configured grant resources associated with synchronization signal blocks having sufficient quality, allowing for simultaneous transmission across these resources to avoid delays and optimize resource use, thereby enabling efficient uplink data transmission without the need for dynamic grants or blind decoding by the network node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single configured grant resource is used for uplink small data transmission in RRC_INACTIVE state, then the transmission procedure is simplified, but the transmission capacity is limited and cannot handle data segments exceeding the initial block capacity
Solution Approach 1:
The patent divides the transmission resources into multiple configured grant resources (first configured grant resource and second configured grant resource) associated with different SSBs. This segmentation allows the UE to transmit data segments that exceed the capacity of a single configured grant resource by utilizing multiple resources, thereby resolving the contradiction between simplified procedure and limited capacity.
Solution Approach 2:
The patent introduces a new dimension to the transmission system by associating multiple configured grant resources with different SSBs (synchronization signal blocks). This dimensional expansion from a single resource to multiple resources enables the system to handle larger data volumes while maintaining the simplicity of configured grant transmission without requiring dynamic grants.
2Quantity of substance
If multiple configured grant resources are used for uplink transmission, then the transmission capacity and resource utilization are improved, but the complexity of resource selection and management increases
Solution Approach 1:
The patent implements a self-service mechanism where the UE autonomously selects appropriate configured grant resources based on SSB associations and quality measurements (SS-RSRP). The network node provides the association configuration, but the UE independently determines which resources to use without requiring complex network coordination or blind decoding, thus improving resource utilization while managing complexity.
Solution Approach 2:
The patent applies preliminary action by pre-configuring multiple configured grant resources with their associated SSBs before the actual data transmission. The network node provides the association configuration in advance, allowing the UE to have ready-to-use resources when data needs to be transmitted, eliminating the need for dynamic grant requests and reducing transmission latency.
3Manufacturing precision
If configured grant resources are strictly associated with specific SSBs, then the resource allocation is precise and efficient, but the flexibility to handle UE movement and changing channel conditions is reduced
Solution Approach 1:
The patent makes configured grant resources multi-functional by associating each resource with a specific SSB, allowing the same resource pool to serve multiple SSBs and potentially multiple UEs. This universal approach enables precise resource allocation to the correct SSB while maintaining flexibility, as the UE can measure SSB quality and select the appropriate associated resource based on current channel conditions and mobility state.
Data Source
AI summary
Methods and apparatuses for transmission and reception of uplink data. A method performed by a user equipment for uplink data transmission of uplink data to a network node comprises selecting a transmission resource associated with a synchronization signal block (SSB). The method further comprises determining whether to select one or more further transmission resources associated with SSBs. The method also comprises transmitting uplink data using the transmission resource and, if selected, the one or more further transmission resources.