Mobile Station Duplicate Acknowledgment Suppression
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Solution Overview
Problem
Conventional EGPRS mobile stations often send duplicate event-based and polled acknowledgments, leading to redundant information transmission and wastage of bandwidth.
Innovation Solution
The mobile station is configured to refrain from sending event-based acknowledgment information if the acknowledgment status of missing downlink data blocks is expected to be timely reported through polled acknowledgment procedures, thereby avoiding duplicate transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile station sends both event-based and polled acknowledgments, then acknowledgment coverage is improved, but bandwidth waste increases due to duplicate transmissions
Solution Approach 1:
The mobile station checks whether a polled acknowledgment is scheduled to be sent before transmitting event-based acknowledgment information. This preliminary check prevents duplicate transmissions by suppressing event-based acknowledgments when polled acknowledgments are expected to carry the same information, thereby resolving the contradiction between acknowledgment coverage and bandwidth waste.
2Loss of information
If the mobile station transmits duplicate acknowledgments, then information completeness is improved, but transmission efficiency deteriorates
Solution Approach 1:
The mobile station uses feedback from the network's polling behavior to adjust its acknowledgment transmission strategy. By monitoring whether polled acknowledgments are scheduled and checking if they will carry the same acknowledgment information, the mobile station intelligently suppresses duplicate event-based acknowledgments, thereby improving transmission efficiency while maintaining information completeness through the polled acknowledgment mechanism.
Data Source
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AI summary
Methods and apparatus to avoid mobile station transmission of duplicate event-based and polled acknowledgments are disclosed. An example method for a mobile station configured to send event-based acknowledgment information as disclosed herein comprises classifying a downlink data block as unreported, receiving a poll from a network requesting the mobile station to send polled acknowledgment information during a period, and refraining from sending during the period event-based acknowledgment information for the downlink data block classified as unreported.