MAC PDU Feedback Multiplexing for Shared Time-Frequency Resources
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Solution Overview
Problem
In wireless communication systems, when multiple users transmit data using the same time-frequency resource, some users' data may be successfully received by a base station while others' data may not be correctly parsed, leading to a lack of feedback information for successful or failed transmissions.
Innovation Solution
A method where a first node multiplexes feedback information for multiple second nodes in a Media Access Control (MAC) Protocol Data Unit (PDU), including bit information generated after correctly receiving transmission blocks, allowing the base station to provide corresponding feedback for successful or failed transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple users transmit data using the same time-frequency resource, then communication efficiency is improved, but feedback information cannot be provided for all users
Solution Approach 1:
The feedback information for multiple users is segmented into separate feedback domains within the MAC PDU. Each user's feedback is independently organized and can be individually accessed, allowing the base station to provide specific feedback for each user even when multiple users share the same time-frequency resource.
Solution Approach 2:
Multiple users' feedback information is nested within a single MAC PDU structure. The feedback domains are organized hierarchically, with each user's feedback contained as a separate domain within the overall feedback structure, enabling comprehensive feedback delivery in a unified transmission.
2Use of energy by moving object
If multiple users share the same time-frequency resource, then power consumption is reduced, but transmission reliability deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the base station sends acknowledgment information to each user based on whether their data was successfully received. This feedback enables users to determine if retransmission is needed, improving transmission reliability while allowing users to power down when no retransmission is required.
Solution Approach 2:
The system dynamically adjusts transmission behavior based on feedback received. Users can transition between active transmission state and idle state depending on whether their data was successfully received, optimizing power consumption while maintaining reliability through conditional retransmission.
Data Source
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AI summary
Provided are a feedback information processing method, device and system, and a base station and a terminal. The method comprises: a first node multiplexing feedback information with respect to a plurality of second nodes in a media access control protocol data unit (MAC PDU); and the feedback information is information generated after the first node correctly receives a transmission block of the second node, wherein the feedback information contains a plurality of pieces of byte information. In the relevant art, a plurality of users transmitting respective data using the same time-frequency resource is allowed, and the data of some users may be successfully received by a base station, but the data of other users may not be correctly parsed by the base station. The embodiment of the present disclosure solves the problem of a base station being able to provide corresponding feedback information for a user of a successful transmission or a failed transmission.