Downlink Recovery Status Buffer for Wireless Interruption Delay
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Solution Overview
Problem
Current wireless communication systems face delays and overhead issues when recovering from interruptions in data transmission, particularly during continuous data streams like voice or video calls, which can lead to severe degradation of call quality.
Innovation Solution
A method and apparatus for wireless communication that suspend data reception due to interruptions and resume by transmitting status information independently of polling requests, identifying last received user data and lost data, to facilitate immediate retransmission and reduce delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If recovery mechanisms are used to indicate lost information needs retransmission, then information loss is recovered, but delay and overhead increase
Solution Approach 1:
The receiver maintains a transmission status buffer that pre-stores information about received and lost data packets before any recovery is needed. When an interruption occurs, this pre-prepared status information can be immediately transmitted to the sender without requiring polling requests or additional detection steps, thus reducing recovery delay while maintaining reliable information recovery
Solution Approach 2:
The system implements a feedback mechanism where the receiver proactively transmits status information about lost data to the sender. This feedback is triggered by interruption detection rather than by polling requests, allowing the sender to immediately retransmit lost packets without waiting for scheduled polling intervals, thereby reducing both delay and overhead
2Loss of information
If polling requests are used to request status information, then lost data can be identified, but overhead increases
Solution Approach 1:
The receiver prepares and maintains transmission status information in a buffer before any polling request arrives. This status information includes details about received and lost data packets. When an interruption is detected, the receiver can immediately transmit this pre-prepared status information without waiting for or processing polling requests, thereby eliminating the overhead associated with polling while still enabling complete lost data identification
Solution Approach 2:
The invention extracts the essential status information (received packet acknowledgments and lost packet identification) from the continuous data stream and maintains it separately in a transmission status buffer. This extracted status information can be transmitted independently of polling requests, removing the dependency on polling overhead while preserving the ability to identify lost data
3Productivity
If continuous stream transmission is used, then data rate is maintained, but interruption impact is severe
Solution Approach 1:
The system maintains continuous transmission of status information from the receiver to the sender by proactively sending status updates upon interruption detection. This continuous status feedback enables the sender to continuously retransmit lost packets without interruption to the overall data stream, maintaining both high data rate and reliable delivery even during and after interruptions
Solution Approach 2:
The invention implements continuous feedback by having the receiver immediately transmit status information about lost packets when an interruption is detected. This real-time feedback allows the sender to continuously adjust retransmission actions, ensuring that the continuous data stream maintains both high productivity and reliability by quickly recovering from interruptions without severe quality degradation
Data Source
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AI summary
Systems, methods, and devices for an improved recovery for the downlink are described herein. In some aspects, delay and overhead associated with retransmission of data lost due to an interruption can be reduced and/or eliminated by configuring a receiver to generate and transmit status information following resumption from the interruption. The receiver can be configured to generate and transmit status information immediately upon resuming from the interruption. In some aspects, the receiver can be configured to automatically generate and transmit status information independent of receiving a polling request from the sender. Status information can indentify at least last received user data prior to the interruption. In some aspects, status information further identifies lost data due to the interruption.