Configured Grant Resource Signaling for Variable XR Data Frames
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Solution Overview
Problem
Configured grant (CG) resources in existing technologies are either too large or too small for varying data frame sizes of extended reality (XR) services, leading to resource waste or delayed transmission.
Innovation Solution
A terminal device determines the usage of CG transmission resources based on data amount and transport block size, reporting unused resources to the network for reallocation to other devices, thereby optimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fixed CG resources are allocated to UE, then resource allocation is simple and deterministic, but resource waste occurs when data amount varies
Solution Approach 1:
The patent divides the CG periodicity into multiple CG transmission resources (multiple CG occasions), allowing the UE to selectively use only the necessary number of resources based on actual data amount, thereby avoiding resource waste while maintaining simple resource allocation
Solution Approach 2:
The patent enables dynamic resource usage within a fixed CG configuration by allowing the UE to determine at each CG occasion whether to transmit data based on current data availability, making the resource utilization flexible without changing the overall allocation structure
2Adaptability or versatility
If multiple CG transmission resources are configured in one CG periodicity, then resource flexibility increases for varying data amounts, but UE cannot determine which resources are used or unused
Solution Approach 1:
The patent introduces feedback mechanisms where the UE reports resource usage status to the network device, enabling the network to accurately determine which CG resources are used and which are unused, thereby resolving the uncertainty in resource status
Solution Approach 2:
The patent configures multiple CG transmission resources in advance within one CG periodicity, allowing the UE to have pre-allocated resources available for selective use based on data availability, improving adaptability without requiring real-time resource allocation decisions
3Reliability
If CG resources are allocated based on maximum data frame size, then all data can be transmitted, but resources are wasted when actual data size is smaller
Solution Approach 1:
The patent allocates more CG transmission resources than the minimum needed (excessive action), allowing the UE to use only the partial number of resources actually required based on data amount, ensuring data transmission completeness while enabling resource optimization through selective usage
Data Source
AI summary
Embodiments of this application provide an information transmission method and apparatus. The method includes: determining, at a first moment in a configured grant CG periodicity and based on an amount of to-be-transmitted data in the CG periodicity and a transport block size TBS that can be transmitted through any one or more CG transmission resources in the CG periodicity, whether a plurality of CG transmission resources in the CG periodicity are used to transmit data for a first terminal device; and sending indication information to a network device, where the indication information indicates whether the plurality of CG transmission resources in the CG periodicity are used to transmit the data for the first terminal device.