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 data 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 the indicated delay information to be reported, using indexes and configuration information to determine valid transmission duration and remaining delay budget.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional BSR reporting method is used, then reporting simplicity is maintained, but transmission delay requirement cannot be met
Solution Approach 1:
The reporting information is segmented into separate fields: a first field indicating delay information and presence of data amount, and a second field indicating data amount. This segmentation allows the network to prioritize delay information for time-sensitive services while maintaining optional data amount reporting, thus meeting transmission delay requirements without unnecessarily increasing reporting complexity.
Solution Approach 2:
The reporting structure is made dynamic through the first field that adaptively indicates whether the data amount is included. For delay-sensitive services, only delay information is reported (simpler, faster), while for other services, both delay and data amount can be reported. This dynamic approach optimizes transmission time based on service requirements.
2Reliability
If data amount is always reported with delay information, then complete information is provided, but invalid reporting occurs when data amount does not match delay information
Solution Approach 1:
The first field acts as a feedback mechanism that indicates whether the data amount information is valid and included in the report. When delay information is reported, the first field provides feedback on the presence and validity of associated data amount information, allowing the network to reliably interpret the report without receiving invalid or mismatched information.
Solution Approach 2:
The reporting parameters are changed to include an explicit indicator (first field) that modifies the interpretation of subsequent parameters. When the first field indicates data amount is present, the second field is interpreted as valid data amount information; when it indicates absence, the second field is either omitted or interpreted differently, preventing invalid information reporting.
3Productivity
If resource allocation is based only on data amount, then scheduling simplicity is maintained, but delay-sensitive services cannot be properly scheduled
Solution Approach 1:
Different quality of information is provided for different services through the delay information field. Delay-sensitive services receive prioritized handling based on their specific delay requirements indicated in the first field, while other services can be scheduled using traditional data-amount-based methods. This local quality differentiation improves service transmission efficiency without requiring complete redesign of the scheduling system.
Data Source
AI summary
In the field of communication technologies, 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.