SR Bundle Transmission Cancellation in Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, particularly in LTE, there is a need to avoid unnecessary Scheduling Request (SR) transmissions to conserve power and resources, as existing methods do not effectively stop SR bundle transmissions when cancellation conditions are met during ongoing transmission.
Innovation Solution
A method where the User Equipment (UE) immediately stops transmitting a SR bundle when the SR cancellation condition is met, even if part of the repeated transmissions have not been completed, by instructing the Physical Layer to cease transmission upon receiving the cancellation indication from the Medium Access Control (MAC) Layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the UE continues transmitting SR bundle after cancellation condition is met, then the transmission completion is ensured, but unnecessary power consumption and resource waste occur
Solution Approach 1:
The patent implements dynamic control of SR bundle transmission by allowing the UE to adaptively stop transmission when cancellation conditions are met. The MAC layer dynamically generates cancellation indications based on buffer status changes, and the physical layer dynamically adjusts transmission behavior accordingly, resolving the contradiction between completing transmission and avoiding waste.
Solution Approach 2:
The patent establishes a feedback mechanism where the MAC layer monitors buffer status and generates cancellation indications when data becomes available. This feedback loop allows the system to respond to changing conditions in real-time, stopping SR transmissions when no longer needed while ensuring reliable communication when data is present.
2Productivity
If the UE stops SR bundle transmission immediately when cancellation condition is met, then power consumption is reduced, but transmission interruption may occur
Solution Approach 1:
The patent applies preliminary action by having the MAC layer evaluate cancellation conditions before the physical layer completes transmission. The cancellation indication is generated in advance based on buffer status, allowing the system to proactively stop transmissions that are no longer needed, improving operational efficiency while maintaining stability through proper condition checking.
3Reliability
If the UE transmits SR bundle repeatedly to ensure delivery, then transmission reliability is improved, but resource waste and power consumption increase
Solution Approach 1:
The patent uses feedback mechanisms where the MAC layer continuously monitors buffer status and generates cancellation indications when data arrives or is scheduled. This prevents unnecessary repeated SR transmissions that would waste uplink resources, while still ensuring reliable delivery when actual data transmission is needed. The feedback loop balances reliability with resource efficiency.
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 performing transmission of a SR bundle in a wireless communication system, the method comprising: configuring that the UE transmits a SR bundle, wherein the SR bundle includes repeated transmissions of a SR, starting to transmit the SR bundle to a BS when the SR is triggered, and stopping the transmission of the SR bundle immediately even if at least part of the repeated transmissions of the SR has not yet been transmitted, when SR cancellation condition is met.