RLC Status Prohibit Timer Dynamic Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional portable electronic devices face issues with radio link control (RLC) due to varying channel quality, leading to increased retransmission operations and wastage of network bandwidth, as frequent negative acknowledgement (NACK) status protocol data units result in redundant data packets being transmitted.
Innovation Solution
A method and apparatus that dynamically estimate the round trip time (RTT) of transmission/retransmission and adjust the status prohibit timer value to prevent redundant NACK status reports, thereby optimizing RLC operations by monitoring factors such as energy per modulating bit to noise spectral density and propagation delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequent NACK status PDUs are sent to ensure reliable data transmission, then transmission reliability is improved, but network bandwidth is wasted and throughput performance degrades due to redundant retransmissions
Solution Approach 1:
The patent applies dynamics by making the status prohibit timer value adjustable rather than fixed. The timer value is dynamically modified based on RTT awareness, allowing the system to adapt to varying channel conditions and optimize the balance between reliability and throughput performance.
Solution Approach 2:
The patent implements feedback mechanisms by monitoring RTT (round trip time) and using this information to adjust the status prohibit timer value. This feedback loop enables the system to learn from transmission patterns and prevent redundant NACK status PDUs while maintaining reliable data transmission.
2Productivity
If the status prohibit timer value is increased to prevent redundant NACK status reports, then network bandwidth is conserved, but transmission reliability may be compromised by premature prohibition
Solution Approach 1:
The patent makes the status prohibit timer value dynamic rather than static. By adjusting the timer value based on real-time RTT measurements, the system can optimize the balance between preventing redundant reports and ensuring reliable transmission, avoiding both premature prohibition and excessive retransmission.
Solution Approach 2:
The patent changes the parameter of the status prohibit timer value based on RTT awareness. By modifying this critical parameter dynamically, the system adapts to different transmission conditions and achieves optimal performance in terms of both bandwidth efficiency and transmission reliability.
3Productivity
If RTT estimation and dynamic timer adjustment are implemented, then throughput performance is enhanced and bandwidth is conserved, but device complexity increases due to additional estimation and adjustment mechanisms
Solution Approach 1:
The patent implements self-service by enabling the RLC entity to automatically estimate RTT and adjust the status prohibit timer value without external intervention. The system monitors its own transmission patterns and makes adaptive adjustments, reducing the need for complex external control mechanisms.
Solution Approach 2:
The patent uses feedback from RTT measurements to automatically adjust system parameters. This feedback mechanism enables the system to optimize performance autonomously, transforming the complexity management from requiring complex external control to using simple internal adaptive mechanisms.
Data Source
AI summary
A method for performing radio link control (RLC) with round trip time (RTT) awareness is provided, where the method is applied to an electronic device. The method includes: dynamically estimating an index according to one or more factors; and based upon the index, dynamically adjusting a status prohibit timer value of a status prohibit timer for performing RLC. For example, the index can be an RTT of transmission/retransmission, and the step of dynamically estimating the index may further include: dynamically estimating the RTT of transmission/retransmission by detecting a time period between a first time point and a second time point, wherein the first time point represents time of sending a negative acknowledgement (NACK) status report. In another example, the index can be an RTT awareness index, where the method may include estimating the RTT awareness index according to at least one predetermined estimation function. An associated apparatus is also provided.