ARQ Feedback Timer Mechanism for Wireless Overhead Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, the existing Automatic Repeat reQuest (ARQ) feedback mechanisms are hindered by overhead and inefficiencies, particularly when the receiving end lacks control over ARQ feedback timing and when ARQ feedback information is corrupted, leading to degraded performance and resource allocation challenges.
Innovation Solution
The method involves a timer-based system at both the receiving and transmitting ends to autonomously manage ARQ feedback, where the receiving end initializes and drives a timer upon receiving error-free ARQ blocks, and the transmitting end predicts and allocates resources based on the number of successfully received blocks, enabling timely and accurate ARQ feedback without relying on explicit requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiving end performs ARQ feedback according to ARQ feedback indication information from the transmitting end, then the transmitting end can control feedback timing, but overhead increases due to including ARQ feedback request indicator in every ARQ block
Solution Approach 1:
The patent extracts the ARQ feedback request indicator from every ARQ block and implements it only in selective ARQ blocks. The receiving end autonomously determines when to provide ARQ feedback without requiring explicit request indicators in all blocks, thereby removing unnecessary overhead while preserving feedback control capability.
Solution Approach 2:
Instead of including ARQ feedback request indicators in all ARQ blocks (excessive action), the patent applies partial action by including the indicator only in selective ARQ blocks where feedback is actually needed. This reduces overhead while maintaining necessary feedback control.
2Adaptability or versatility
If the receiving end itself determines and performs ARQ feedback, then autonomy increases, but the transmitting end cannot know the ARQ feedback time and cannot smoothly allocate resources
Solution Approach 1:
The patent applies preliminary action by having the receiving end autonomously determine ARQ feedback timing in advance based on pre-configured parameters and conditions. This allows the receiving end to initiate feedback without waiting for explicit requests, achieving autonomy while the transmitting end can predict and prepare for feedback events.
Solution Approach 2:
The patent implements a feedback mechanism where the receiving end autonomously monitors reception status and automatically provides ARQ feedback when predefined conditions are met. This feedback loop enables autonomous operation while maintaining synchronization between transmitting and receiving ends through predictable feedback timing based on configurable parameters.
3Reliability
If ARQ feedback information is corrupted, then transmission reliability decreases, but existing mechanisms lack efficient recovery methods
Solution Approach 1:
The patent applies beforehand cushioning by implementing error detection and recovery mechanisms that prepare for potential corruption before it occurs. When ARQ feedback information is corrupted, the system can detect the error and initiate recovery procedures, cushioning against the impact of information loss and maintaining transmission reliability.
Data Source
AI summary
An apparatus and a method for Automatic Repeat reQuest (ARQ) feedback in a wireless communication system are provided. A method for the ARQ feedback at a receiving end includes when receiving an ARQ block from the transmitting end, checking for error in the ARQ block, when the ARQ block has no error, initializing and driving a timer used for determining whether to perform the ARQ feedback according to reception of a next ARQ block, when receiving the next ARQ block without error before the timer expires, initializing and driving the timer, and when the timer expires, performing the ARQ feedback in relation to at least one ARQ block received without error.