Access Network Device Dynamic Support List Update
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Solution Overview
Problem
Existing synthesis communications systems face reduced reliability and throughput in data transmission due to poor channel quality between user equipment (UE) and access network devices, as they fail to update cooperative communication relationships effectively when the short-range link or macro network link deteriorates.
Innovation Solution
An access network device method to query and update the support list by determining poor channel quality, selecting a new supporting UE, and establishing a cooperative communication relationship using higher layer signaling to ensure reliable data transmission, with mechanisms for temporarily suspending or deleting UE pairs based on channel recovery thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access network device uses existing synthesis communications to forward data through a current supporting UE, then data transmission can be achieved in poor channel conditions, but reliability and throughput are sharply reduced when the short-range link or macro network link deteriorates because the cooperative communication relationship cannot be updated
Solution Approach 1:
The patent implements dynamic updating of the support list by the access network device based on channel quality feedback. The support list, which contains candidate supporting UEs, is updated in real-time according to measured channel conditions between UEs and the access network device. This allows the system to adapt the cooperative communication relationships dynamically, switching between different supporting UEs to maintain reliable data transmission when channel conditions deteriorate.
Solution Approach 2:
The patent employs feedback mechanisms where UEs measure channel quality (both short-range links and macro network links) and report this information to the access network device. Based on this feedback, the access network device determines whether to update the support list and select new supporting UEs. This closed-loop feedback system ensures that cooperative communication relationships are maintained based on current channel conditions, resolving the issue of static relationships that cannot adapt to deterioration.
2Reliability
If the access network device maintains a static cooperative communication relationship, then system complexity is reduced, but data transmission reliability deteriorates when channel conditions change
Solution Approach 1:
The patent pre-establishes a support list containing multiple candidate supporting UEs before actual data transmission begins. The access network device proactively identifies and stores potential supporting UEs based on initial channel conditions. When channel deterioration occurs, the device can quickly select from this pre-prepared list without needing to perform complex real-time searches, thus maintaining reliability while limiting the complexity increase to manageable levels.
Solution Approach 2:
The patent manages complexity by changing specific parameters of the support list rather than completely reconfiguring cooperative relationships. The access network device updates the support list by adding or removing UE identifiers based on channel quality thresholds. This parameter-based management approach (updating lists rather than redesigning entire communication paths) maintains reliability through adaptation while controlling system complexity through standardized update procedures.
Data Source
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AI summary
Embodiments of the present invention provide a cooperative communication method and system, an access network device, and a user equipment. The method includes: when a access network device receives downlink data belonging to a first user equipment UE, if it is determined that a supporting UE in a support list of the first UE cannot serve as a current supporting UE of the downlink data, establishing a cooperative communication relationship between a second UE and the first UE, that is, setting the second UE as the current supporting UE of the first UE, where the second UE is another UE except the first UE and the supporting UE in the support list of the first UE; and sending the downlink data to the second UE, so that the second UE sends the downlink data to the first UE, which can improve reliability of data transmission for the first UE.