Beam-Based Configured Grant Small Data Transfer
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in configuring and managing beam-based configured grant-small data transfer (CG-SDT) occasions, particularly in reducing network overhead and resource use, and improving spectral efficiency and communication reliability.
Innovation Solution
The method involves a user equipment (UE) receiving a configuration message from a base station indicating a CG-SDT group associated with a downlink beam and transmitting uplink communications within designated CG-SDT occasions using an uplink beam corresponding to the downlink beam, while the base station receives these communications using a spatial filter, allowing for optimized beam selection and reduced signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beam-based configured grant-small data transfer (CG-SDT) occasions are implemented, then spectral efficiency is improved, but network overhead and resource use increase
Solution Approach 1:
The patent segments the network into multiple beams, with each beam serving a specific group of UEs. Configuration messages are beam-specific, allowing targeted resource allocation. This segmentation enables efficient spectral usage within each beam while reducing overall network overhead by avoiding blanket configurations across the entire network.
Solution Approach 2:
The patent applies local quality by providing beam-specific configuration messages to UE groups within each beam. Each beam can have customized CG-SDT occasions, resource allocations, and parameters tailored to local conditions and UE requirements. This localized approach improves spectral efficiency in each beam while minimizing unnecessary network overhead.
2Reliability
If beam-based CG-SDT occasions are implemented, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements preliminary action by providing configuration messages in advance that contain all necessary beam-specific parameters for CG-SDT occasions. UEs receive pre-configured information about resource allocations, timing, and beam associations before actual data transmission. This advance configuration simplifies device operation during actual communication while ensuring reliable beam-based transmission.
Solution Approach 2:
The patent enables self-service by allowing UEs to autonomously select and use appropriate beams based on pre-configured parameters. Each UE can independently determine which beam to use for CG-SDT occasions without continuous network control, reducing device complexity while maintaining communication reliability through beam diversity and selection.
3Productivity
If beam-specific configuration messages are transmitted, then resource allocation efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent applies universality by designing configuration messages that serve multiple functions simultaneously. A single beam-specific configuration message provides UE group identification, CG-SDT occasion timing, resource allocation parameters, and beam association information. This multi-functional approach improves resource allocation efficiency while minimizing signaling overhead by consolidating multiple information elements into unified messages.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a configuration message indicating a configured grant-small data transfer (CG-SDT) group that includes the UE. The CG-SDT group is associated with a downlink beam of the base station and one or more CG-SDT occasions. The UE may transmit, to the base station and within the one or more CG-SDT occasions, an uplink communication, using an uplink beam of the UE corresponding to a downlink beam of the UE, where the downlink beam of the UE is associated with the downlink beam of the base station used for transmitting at least one of the configuration message, a paging message, or a reference signal. Numerous other aspects are provided.