Selective Buffer Status Reporting in Wireless Uplink
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Solution Overview
Problem
Current wireless communication systems, such as LTE, face challenges in efficiently transmitting buffer status reports, leading to suboptimal resource allocation and potential waste of uplink resources due to the need for all entities to report upper entity buffer sizes, even when not necessary.
Innovation Solution
A method where User Equipment (UE) selectively transmits buffer status reports, indicating upper entity buffer size only to specified lower entities based on threshold values and availability of uplink data, optimizing the reporting process to reduce unnecessary transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all lower entities transmit buffer status reports including upper entity buffer size, then the network receives complete buffer status information, but uplink resources are wasted due to unnecessary transmissions
Solution Approach 1:
The patent applies local quality by allowing different lower entities to have different reporting behaviors based on their specific conditions. Some lower entities transmit buffer status reports including upper entity buffer size while others transmit simplified reports without this information, depending on whether they have uplink data to transmit. This differentiated approach ensures complete information where needed while avoiding unnecessary transmissions elsewhere.
2Loss of information
If all lower entities report upper entity buffer size, then the network has full visibility of buffer status, but the complexity of the reporting mechanism increases
Solution Approach 1:
The patent implements partial action by having only certain lower entities (those with uplink data) report the complete buffer status information including upper entity buffer size. Other lower entities without uplink data transmit simplified reports. This partial reporting approach maintains necessary network visibility while reducing the overall complexity of the reporting mechanism compared to requiring all entities to report complete information.
3Productivity
If selective reporting is implemented, then uplink resources are optimized, but the scheduling complexity at the network side increases
Solution Approach 1:
The patent uses feedback mechanisms where lower entities report their buffer status and uplink data availability to the network. The network uses this feedback information to determine which lower entities should receive uplink grants and what type of buffer status reports they should transmit. This feedback loop enables the network to optimize uplink resource allocation dynamically while managing scheduling complexity through condition-based decision making.
Data Source
AI summary
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for transmitting, by a user equipment (UE), a buffer status report in a wireless communication system, the method comprising: receiving, by the UE, a message including information on a number N of lower entities to report an upper entity buffer size of a radio bearer; and transmitting, by N lower entities, the buffer status report including the upper entity buffer size, wherein the radio bearer comprises one upper entity and M lower entities, and wherein N≤M.