PDCCH Resource Allocation Collision Avoidance
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Solution Overview
Problem
In mobile wireless communication networks, the increasing number of user equipment leads to resource collisions during physical downlink control channel (PDCCH) resource allocation, resulting in inefficient performance and blocking of critical information transmission.
Innovation Solution
A method that ranks downlink control information (DCI) messages and their corresponding resource sets based on specific criteria to avoid collisions, employing one-layer, two-layer, or N-layer resource set searching to allocate resources efficiently, ensuring that each DCI message is allocated to a non-collided resource set, thereby minimizing blocking rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of user equipment receiving PDCCH information increases, then the network coverage and service capability are improved, but the possibility of resource collisions and blocking increases
Solution Approach 1:
The patent segments the resource allocation process into multiple stages: initial resource selection, collision detection, and collision avoidance through alternative resource assignment. By dividing the allocation into discrete steps with collision checking at each stage, the system can identify and resolve conflicts before final allocation, thereby maintaining reliability even as the number of user equipment increases.
Solution Approach 2:
The patent performs preliminary collision detection and resolution before final resource allocation. By checking for potential collisions in advance and preparing alternative resource sets, the system prevents blocking from occurring, ensuring that resource allocation remains reliable even when serving a large number of user equipment simultaneously.
2Device complexity
If traditional resource allocation methods are used, then the system complexity is low, but resource utilization efficiency deteriorates due to collisions and blocking
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors resource allocation status, detects collisions, and adjusts subsequent allocations based on detected conflicts. This closed-loop approach improves resource utilization efficiency by learning from past allocations and avoiding repeated collisions, while the feedback is integrated into the existing allocation framework to minimize added complexity.
Solution Approach 2:
The patent introduces dynamic resource selection where the system adapts resource allocation based on real-time network conditions and detected collisions. Rather than using fixed allocation patterns, the system dynamically adjusts resource selection to avoid conflicts, improving efficiency while maintaining manageable complexity through structured dynamic decision-making.
Data Source
Figure 1A~1B
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AI summary
A method is provided in one example embodiment and may include ranking a plurality of downlink control information (DCI) messages according to a first rank criterion; ranking a plurality of allowable resource sets for each ranked DCI message according to a second rank criterion; and allocating resources for each ranked DCI message based, at least in part, on whether particular resources, which are to be allocated for a particular ranked DCI message, are collided, at least in part, with previously allocated resources for one or more other DCI messages.