Full-Duplex Access Queue Placement via Feedback
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Solution Overview
Problem
Existing full-duplex transmission methods fail to correctly determine the status of access timeslots, leading to uncertain queue locations and increased contention-based access delays due to differences in channel conditions and interference between nodes.
Innovation Solution
A full-duplex transmission method where a first node sends access request information, receives full-duplex feedback indicating the status of access timeslots, and determines the target queue location in the conflict resolution queue based on the feedback, ensuring accurate queue placement and reducing contention delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nodes determine access timeslot status based on feedback information, then transmission efficiency is improved, but measurement precision deteriorates due to channel conditions and interference differences
Solution Approach 1:
The patent implements a feedback mechanism where the second node sends feedback information to the first node about the access timeslot status. This feedback loop allows the first node to adjust its queue location determination based on actual channel conditions observed by the second node, resolving the contradiction between transmission efficiency and measurement precision by using observed feedback rather than independent determination.
Solution Approach 2:
The feedback information acts as an intermediary that transfers the status determination from the second node (which has accurate channel knowledge) to the first node. This intermediary mechanism allows the first node to make accurate queue location decisions without directly measuring the channel, thus maintaining both transmission efficiency and measurement precision.
2Adaptability or versatility
If nodes use contention-based access, then adaptability is improved, but access delay increases due to conflicts and retransmissions
Solution Approach 1:
The patent determines the target queue location in advance based on feedback information about access timeslot status, before actual transmission occurs. This preliminary determination of queue location prevents conflicts and retransmissions by ensuring nodes join the appropriate queue based on predicted channel conditions, thus reducing access delay while maintaining adaptability.
Solution Approach 2:
The patent dynamically adjusts the target queue location based on changing channel conditions reflected in the feedback information. This dynamic adjustment allows the system to adapt to varying transmission conditions while minimizing access delays by continuously optimizing queue placement rather than using fixed contention-based access.
3Loss of information
If feedback information is sent to all nodes, then information completeness is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by sending feedback information specifically to the first node that needs it for queue location determination, rather than broadcasting to all nodes. This targeted approach maintains information completeness for the relevant node while reducing overall system complexity and unnecessary processing at other nodes.
Data Source
AI summary
Methods, devices, and systems for full-duplex transmission are provided. In one aspect, a method can include: sending, by a first node, access request information to a second node in a first access timeslot, receiving, by the first node, full-duplex feedback information sent by the second node, receiving, by the first node, a target identifier sent by the second node, the full-duplex feedback information indicating that the first access timeslot is in a successful state, and determining, by the first node, a target queue location of the first node associated with a conflict resolution queue in response to at least one of: determining that the target identifier is different from an identifier of the first node, or determining that the full-duplex feedback information indicates that the first access timeslot is in an idle state.