Wireless Terminal Buffer Status Report Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In fifth generation mobile communication systems, the estimation accuracy of buffer size in wireless base stations deteriorates due to rapid changes in data transmission rates, leading to inefficient wireless resource allocation and potential data discard, which affects latency and resource usage efficiency.
Innovation Solution
A wireless terminal allocates a part of the uplink grant's allocation amount for BSR transmission, allowing the base station to continuously update the buffer estimation based on the latest BSR, thereby tracking buffer status variations and improving estimation accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the wireless base station uses traditional buffer size estimation methods, then the system complexity is low, but the estimation accuracy deteriorates due to rapid changes in data transmission rates
Solution Approach 1:
The wireless terminal performs preliminary actions by proactively transmitting BSR information to the wireless base station before the base station needs to allocate resources. This allows the base station to have up-to-date buffer status information already available, improving estimation accuracy without requiring complex real-time monitoring systems.
Solution Approach 2:
The patent implements a feedback mechanism where the wireless terminal continuously reports buffer status information (BSR) to the wireless base station. This feedback loop enables the base station to dynamically update its buffer size estimation based on actual terminal buffer status, significantly improving measurement precision while maintaining manageable system complexity through standardized feedback protocols.
2Productivity
If the wireless base station allocates wireless resources based on inaccurate buffer size estimation, then the resource allocation process is simple, but resource usage efficiency deteriorates and data may be discarded
Solution Approach 1:
The feedback mechanism provides the wireless base station with accurate, real-time buffer status information from the terminal. This enables the base station to perform informed scheduling decisions, allocating wireless resources efficiently based on actual buffer needs rather than rough estimates, thereby improving productivity without excessive complexity.
Solution Approach 2:
By receiving BSR information in advance, the wireless base station can prepare appropriate resource allocation decisions before data transmission becomes urgent. This preliminary information availability allows for more thoughtful, efficient resource scheduling while avoiding the complexity of last-minute reactive allocation.
3Measurement precision
If the wireless terminal transmits BSR frequently to improve estimation accuracy, then the estimation accuracy improves, but the overhead of wireless communication increases
Solution Approach 1:
The system dynamically adjusts BSR transmission timing based on actual buffer status changes and traffic conditions. Rather than fixed frequent transmissions, the terminal transmits BSR information adaptively - more frequently when buffer status changes rapidly and less frequently when stable - thereby maintaining estimation accuracy while minimizing communication overhead and energy loss.
Solution Approach 2:
The patent changes the parameter of BSR transmission frequency from a static value to a dynamic parameter that adjusts based on buffer status volatility and traffic patterns. This allows the system to optimize the balance between estimation accuracy and communication overhead by transmitting BSR information only when necessary, reducing energy consumption while maintaining precise buffer size estimation.
Data Source
AI summary
A wireless terminal of a wireless communication system, the wireless communication system including a wireless base station and one or more wireless terminals, the wireless terminal includes: a radio communication circuit configured to perform wireless communication with the wireless base station; and a controller configured to allocate a part of an allocation amount of a wireless resource indicated in uplink grant to transmission of a status report of a transmission buffer when the uplink grant is received from the wireless base station, and uplink data stored in the transmission buffer is transmitted by using the radio communication circuit.