Wireless Resource Scheduling Using Time-Aware Buffer Status Reports
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Solution Overview
Problem
Existing wireless communication networks struggle to guarantee low latency, reliability, and jitter in multi-user transmissions due to inefficient scheduling based on best effort mechanisms, which fail to account for the real-time data transmission needs of non-AP stations.
Innovation Solution
Incorporating a time indication in the buffer status report (BSR) to provide a time limit for data transmission, allowing the access point to schedule resource units more accurately based on the real-time data needs of non-AP stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If best effort scheduling mechanism is used for MU transmissions, then device complexity is reduced and ease of operation is improved, but latency guarantee and transmission reliability deteriorate
Solution Approach 1:
The station performs preliminary action by including a time indication in the BSR frame before the AP makes scheduling decisions. This time indication specifies when the data needs to be transmitted, allowing the AP to proactively allocate resources in advance rather than reacting to traffic demands, thereby guaranteeing latency requirements while maintaining scheduling simplicity
Solution Approach 2:
The BSR mechanism provides feedback from the station to the AP about buffered data status. By enhancing this feedback with time indication information, the system enables the AP to make informed scheduling decisions that meet latency requirements without increasing operational complexity
2Measurement precision
If time indication is added to BSR frame, then transmission timing precision is improved and latency guarantee is enhanced, but device complexity increases
Solution Approach 1:
The time indication is merged with the existing BSR frame structure rather than being transmitted as a separate message. This integration approach provides precise timing information for resource allocation while minimizing the increase in frame complexity and overhead
Solution Approach 2:
The invention changes the BSR frame by adding a time indication parameter that specifies transmission timing requirements. This parameter modification enables precise timing control for low-latency applications without fundamentally altering the BSR mechanism
3Productivity
If resource units are allocated based on time indication, then productivity is improved through efficient resource utilization, but measurement precision requirements increase
Solution Approach 1:
The station performs preliminary action by reporting the time indication in the BSR frame before resource allocation occurs. This allows the AP to measure and allocate resources in advance based on actual data availability and timing requirements, improving resource utilization efficiency while maintaining accurate measurement capabilities
Data Source
AI summary
The present invention concerns a communication method in a wireless communication network, wherein the method comprises at a station: sending to an access point station a frame comprising a buffer status report reporting an amount of buffered data to be transmitted; receiving, from the access point station, an allocation of a resource unit for the transmission of the buffered data; and transmitting the buffered data in the allocated resource unit; wherein the frame sent to the access point station further comprises a time indication representative of a time limit for the transmission of the buffered data by the station.