Buffer Status Reporting Trigger Frame for Wireless Traffic Prioritization
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Solution Overview
Problem
Current systems lack a mechanism for an access point (AP) to specifically trigger buffer status reporting for particular traffic identifiers (TIDs), leading to inefficient prioritization and resource management in wireless communication, especially in latency-sensitive applications like augmented reality (AR) and virtual reality (VR), where latency issues can cause user discomfort.
Innovation Solution
Introducing a new trigger frame type, BSRP-TID Trigger frame, which includes a TID bitmap subfield to specify particular TIDs for buffer status reporting, allowing the AP to request and receive detailed queue size information for specific TIDs, and modifying the BSR control field to include a TID bitmap subfield for accurate reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional buffer status reporting mechanisms are used, then the system can maintain simpler operation, but it cannot provide specific traffic identifier prioritization leading to inefficient QoS management
Solution Approach 1:
The patent segments the buffer status reporting mechanism by introducing a TID bitmap subfield that can selectively indicate specific traffic identifiers. This allows the system to report buffer status for individual TIDs or groups of TIDs rather than treating all traffic uniformly, thereby achieving fine-grained traffic differentiation while maintaining a structured and manageable frame format.
Solution Approach 2:
The patent adds a new dimension to the existing buffer status reporting framework by incorporating the TID bitmap subfield. This additional dimension enables the system to differentiate traffic along the TID dimension, transforming a coarse-grained reporting mechanism into a fine-grained one capable of specific traffic prioritization without completely redesigning the underlying structure.
2Reliability
If general buffer status reporting is used, then the reporting mechanism remains simple, but latency-sensitive traffic cannot be prioritized effectively
Solution Approach 1:
The patent enables preliminary prioritization actions by allowing the AP to pre-identify latency-sensitive TIDs and set corresponding bits in the TID bitmap subfield. This preliminary identification and prioritization mechanism ensures that when buffer status reporting is triggered, the system can immediately focus on the most time-critical traffic, reducing reporting delays for latency-sensitive applications.
3Measurement precision
If detailed per-TID buffer status reporting is implemented, then traffic prioritization accuracy improves, but the overhead of reporting increases
Solution Approach 1:
The patent applies partial action by allowing the TID bitmap subfield to selectively indicate only those TIDs for which buffer status reporting is needed. Rather than requiring comprehensive reporting for all possible TIDs, the system can specify a subset of relevant TIDs, achieving accurate measurement for priority traffic while minimizing the quantity of reported data and reducing overall reporting overhead.
Data Source
AI summary
A first device may include one or more processors. The one or more processors may be configured to wirelessly receive, via a transceiver from a second device, a first frame. The one or more processors may be configured to identify one or more traffic identifiers from a first field of the first frame. The one or more processors may be configured to generate a second frame including buffer status data of one or more wireless traffic streams corresponding to the one or more traffic identifiers. The one or more processors may be configured to wirelessly transmit, via the transceiver, the generated second frame to the second device.