Adaptive MBS Feedback Control for Reliable Wireless Retransmission
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Solution Overview
Problem
In wireless communication systems, particularly in Multicast and Broadcast Services (MBS), there is a lack of assurance that data is correctly received by mobile stations due to the one-way communication nature, making it difficult for base stations to determine if data was properly received and requiring an efficient mechanism for quality of service (QoS) management and retransmission.
Innovation Solution
An adaptive control mechanism is introduced that includes a feedback mechanism allowing mobile stations to communicate with base stations to confirm data receipt and provide detailed information for improved retransmission, utilizing protocols like HARQ, ARQ, and network coding for efficient data retransmission, and reporting transmission information to enhance system operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a one-way communication system is used in MBS, then broadcasting efficiency is improved, but data reception reliability deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where mobile stations send reception status information back to the base station. This allows the base station to determine which data blocks were successfully received and which need retransmission, thereby improving data reception reliability while maintaining broadcasting efficiency through selective retransmission rather than continuous one-way transmission.
Solution Approach 2:
The patent uses preliminary actions by having mobile stations buffer received data blocks and prepare reception status information before the base station needs to make retransmission decisions. This preliminary preparation of feedback information enables faster and more efficient retransmission processes.
2Reliability
If feedback mechanism is implemented, then data reception reliability is improved, but system complexity increases
Solution Approach 1:
The patent segments the feedback mechanism into distinct components: data block transmission, reception status determination, feedback information generation, and retransmission control. This segmentation allows each component to be independently managed and optimized, reducing overall system complexity while maintaining reliability.
Solution Approach 2:
The patent implements partial feedback by having mobile stations report only on data blocks that were not successfully received, rather than reporting on all transmitted blocks. This partial reporting approach reduces feedback overhead and system complexity while still achieving the necessary reliability improvement through targeted retransmissions.
Data Source
AI summary
A system for providing an adaptive control mechanism may include a mobile station within a multicast broadcast service group and a base station in communication with the mobile station. The base station may be configured to control provision of data to the mobile station, receive feedback with respect to receipt of at least a portion of the data provided, and determine a configuration of the base station for future transmissions based on the feedback received. The mobile station may be configured to determine a status with respect to receipt of data expected to be received from the base station, generate the feedback indicative of the status determined, and provide for communication of the feedback generated to the base station.