5G Buffer Status Reporting With Delay-Aware Scheduling
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Solution Overview
Problem
In 5G mobile communication networks, the delay requirement of buffered data cannot be met due to the need for terminal devices to first report a scheduling request (SR) and buffer status report (BSR) before resource scheduling, leading to inaccuracies in data arrival time sensing by the network device.
Innovation Solution
Implementing delay-aware scheduling by configuring buffer status report (BSR) formats with delay information for terminal devices, allowing the network device to perform scheduling based on the delay information of buffered data, using formats with varying quantization precision to match service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device reports SR and BSR before resource scheduling, then the network device can schedule resources, but the delay requirement of the buffered data cannot be met
Solution Approach 1:
The patent applies preliminary action by having the terminal device report delay information in advance within the BSR before the network device performs scheduling. The delay information is reported in a first time slot, and then the network device uses this pre-reported information to perform scheduling in a second time slot, thereby meeting the delay requirement without waiting for additional delay reports after scheduling initiation.
2Measurement precision
If the network device uses conventional BSR format without delay information, then the signaling overhead is small, but the data arrival time sensing is inaccurate
Solution Approach 1:
The patent applies parameter changes by modifying the BSR format to include delay information with configurable bit lengths. The network device can adjust the number of bits for delay information based on service requirements, allowing flexible precision adjustment. This enables accurate data arrival time sensing while controlling the increase in BSR format complexity through selective parameter configuration.
3Adaptability or versatility
If multiple BSR formats with different bit allocations are configured, then the delay information precision can be adjusted, but the signaling overhead increases
Solution Approach 1:
The patent applies local quality by configuring different BSR formats with varying delay information bit allocations tailored to specific service requirements. Instead of using a uniform BSR format for all services, the network device can select appropriate formats (e.g., first BSR format with fewer bits for low-delay services, second BSR format with more bits for high-precision services), thereby achieving service-specific optimization while controlling overall signaling overhead.
Data Source
AI summary
A communication method, a communication apparatus, and a communication system are provided. Including: A terminal device sends first information to a network device, where the first information includes service information. The network device determines one or more buffer status report BSR formats based on the first information, where a quantity of bits occupied by delay information in the BSR formats is N, a quantity of bits indicating a data amount of buffered data in the BSR format is M, the delay information is delay information of the buffered data, and both N and M are positive integers. The network device sends first indication information to the terminal device, where the first indication information indicates the one or more BSR formats. According to embodiments of this application, delay-aware scheduling can be implemented, so that a delay requirement of the buffered data can be met.