Uplink Delay Reporting Fields for XR-Aware 5G Scheduling
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Solution Overview
Problem
Conventional BSR reporting methods in 5G systems fail to account for delay-sensitive services like XR, leading to a high probability that scheduled resources cannot complete uplink transmission within the required air interface time, resulting in resource wastage and poor user experience.
Innovation Solution
An information reporting method that includes separate fields for delay information and data amount, allowing only data amounts matching delay information to be reported, using indexes and logical channel groups to ensure accurate scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional BSR reporting method is used, then data amount can be reported, but delay information cannot be reported leading to high probability of resource allocation failure for delay-sensitive services
Solution Approach 1:
The reporting information is segmented into separate fields: a first field for delay information and a second field for data amount. This segmentation allows the terminal device to report both delay requirements and data amounts independently, enabling the network device to perform reliable resource allocation based on both parameters simultaneously.
Solution Approach 2:
The reporting mechanism adds a new dimension by introducing delay information as a separate reporting parameter alongside the traditional data amount. This dimensional expansion transforms the reporting from a single-parameter (data amount) to a multi-parameter system (delay + data amount), enabling comprehensive resource allocation for delay-sensitive services.
2Measurement precision
If separate fields for delay information and data amount are reported, then accurate scheduling can be enabled, but reporting complexity increases
Solution Approach 1:
The reporting structure is segmented into distinct fields with clear functional separation: the first field carries delay information while the second field carries data amount. This segmentation improves scheduling accuracy by providing precise, independent measurement of each parameter, while the modular structure actually simplifies processing compared to a monolithic reporting format.
Solution Approach 2:
Each field in the reporting structure is optimized for its specific purpose: the first field is designed specifically for delay information with appropriate precision, while the second field handles data amount. This local optimization ensures that each parameter is reported with the appropriate level of detail and format, improving overall scheduling accuracy without unnecessary complexity.
3Device complexity
If only data amount is reported without delay information, then reporting format remains simple, but air interface transmission time requirement cannot be met
Solution Approach 1:
The terminal device performs preliminary reporting of both delay information and data amount before resource allocation occurs. By providing the network device with complete information (delay requirements + data amount) in advance, the network device can perform accurate resource allocation that meets air interface transmission time requirements, preventing time loss without complicating the reporting format.
Solution Approach 2:
The reporting system adds the time dimension by explicitly including delay information as a separate field. This allows the network device to allocate resources with awareness of time constraints, ensuring that air interface transmission time requirements are met. The added dimension is integrated into a structured format that maintains clarity and avoids excessive complexity.
Data Source
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AI summary
This application may be applied to the field of communication technologies, and provides an information reporting method, an apparatus, and a system, to report delay information of to-be-transmitted data. The method includes: A first device sends first information, where the first information includes a first field, and the first field indicates first delay information and whether the first information includes a first data amount; and when the first field indicates that the first information includes the first data amount, the first information further includes a second field, the second field indicates the first data amount, the first data amount is a data amount of first data, and the first delay information is delay information of the first data, where the first field is different from the second field.