Uplink Buffer Status Report Transmission Logic in LTE Terminals
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Solution Overview
Problem
In the LTE wireless communication system, there is a need to efficiently manage and transmit Buffer Status Reports (BSR) without unnecessary cancellation operations, particularly when padding BSRs are involved, to simplify terminal operations and improve data transmission efficiency.
Innovation Solution
A method where the terminal checks for existing uncanceled BSRs during uplink resource allocation, generates uplink data including BSRs, and determines whether to cancel subsequent BSRs based on their types, specifically not canceling padding BSRs to avoid extra operational complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal transmits padding BSR using remaining uplink resources, then data transmission efficiency is improved, but the terminal operation complexity increases due to additional cancellation operations required
Solution Approach 1:
The patent inverts the conventional approach by not canceling padding BSRs but rather keeping them active. Instead of the traditional logic where padding BSR triggers cancellation of other BSRs, this invention maintains padding BSRs and uses them to fill remaining uplink resources, thereby simplifying terminal operations while improving data transmission efficiency
Solution Approach 2:
The padding BSR serves dual purposes: it reports buffer status information and simultaneously fills remaining uplink resources without requiring additional cancellation operations. The system allows the padding BSR to serve itself by utilizing the remaining resources for its own transmission, eliminating the need for complex cancellation management
2Productivity
If the terminal cancels subsequent BSRs when padding BSR is transmitted, then resource utilization is improved, but the ease of operation deteriorates due to additional cancellation steps
Solution Approach 1:
The patent inverts the conventional cancellation logic by maintaining padding BSRs rather than canceling them. This allows the system to achieve resource utilization improvement without requiring the terminal to perform additional cancellation steps, thereby simplifying operations while maintaining efficient resource usage
Solution Approach 2:
The patent merges the functions of buffer status reporting and resource filling into a single operation. The padding BSR simultaneously serves as both a status report and a data transmission payload that fills remaining uplink resources, eliminating the need for separate cancellation operations and simplifying terminal procedures
Data Source
AI summary
The present disclosure proposes a method for transmitting a buffer status report informing of the data to be transmit in uplink. The method for transmitting buffer status report of a terminal in a wireless communication system includes checking, when allocating uplink resource for new data transmission, whether first buffer status report triggered but not cancelled exists, generating, when the first buffer status report exists, uplink data including the buffer status report, checking whether second buffer status report triggered but not cancelled exist except for the buffers status report included in the uplink data, and determining whether to cancel the second buffer status report depending on whether the first buffer status report is a regular buffer status report or periodic buffer status report. With the proposed method, the terminal is capable of transmitting the padding BSR without extra cancellation operation, resulting in reduction terminal's operation complexity.