Uplink Buffer Status Reporting for Wireless Resource Scheduling
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Solution Overview
Problem
In wireless communication systems, particularly in new radio communication technologies, there is a challenge in efficiently managing uplink and downlink data and control signals due to limited resources, leading to latency issues that affect performance.
Innovation Solution
A method and device for performing buffer status reporting in a wireless communication system, where a first node allocates uplink resources to a second node and transmits a buffer status report to a third node, including information on the total amount of uplink data allocated, to optimize resource utilization and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the BS transmits more control information to schedule UL communications, then scheduling efficiency is improved, but the amount of control information increases leading to resource consumption
Solution Approach 1:
The patent extracts and reports only the essential buffer status information needed for scheduling decisions, rather than transmitting complete buffer details. The BSR MAC CE carries condensed buffer size information that enables the BS to make scheduling decisions without receiving exhaustive buffer state reports, thus reducing control information overhead while maintaining scheduling efficiency.
Solution Approach 2:
The patent changes the parameter representation from detailed buffer state information to aggregated buffer size metrics. By reporting buffer status in terms of total bytes or packets rather than individual buffer states, the system reduces the quantity of control information while preserving the essential scheduling parameters needed for efficient resource allocation.
2Reliability
If UL resources are allocated to all nodes with data, then data transmission completeness is improved, but resource allocation complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where nodes report their buffer status to the BS, and the BS uses this feedback to make informed scheduling decisions. The BSR MAC CE provides the BS with real-time buffer information, enabling dynamic resource allocation that ensures all nodes with data can be scheduled appropriately while simplifying the allocation process through information-driven decision making.
Solution Approach 2:
The patent performs preliminary buffer status reporting before scheduling decisions are made. By having nodes report their buffer status in advance through BSR MAC CE, the BS can prepare and allocate resources proactively, ensuring that when scheduling occurs, all necessary information is already available to allocate resources to all nodes that need them, reducing allocation complexity.
3Measurement precision
If buffer status reporting is performed for all uplink data, then resource utilization accuracy is improved, but reporting overhead increases
Solution Approach 1:
The patent extracts only the essential buffer status parameters needed for resource utilization assessment, reporting total buffer size and key metrics rather than complete detailed buffer information. The BSR MAC CE carries condensed buffer status data that provides sufficient accuracy for scheduling decisions while minimizing reporting overhead through selective information extraction.
Solution Approach 2:
The patent implements partial reporting by focusing on the most critical buffer status parameters (total buffer size, data volume) rather than reporting all possible buffer details. This partial action approach achieves sufficient measurement precision for resource utilization accuracy while significantly reducing reporting overhead by omitting less critical information.
Data Source
AI summary
In the present disclosure, a first node performs buffer status reporting including information regarding a total amount of UL data. The first node determines the total amount of UL data for the buffer status reporting based on an amount of UL data for which the UL resources are actually allocated to the second node by the first node.