Resource Allocation in Amplify-and-Forward Relay Networks
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Solution Overview
Problem
The existing resource allocation methods in amplify-and-forward relay networks are inefficient due to their reliance on sub-channel pairing, limiting the system's ability to effectively allocate resources and maximize end-to-end capacity.
Innovation Solution
A resource allocation method and device that obtain channel information between base stations, relay stations, and user equipment, calculate resource use information for each sub-channel pairing, and allocate resource elements (REs) to each user equipment to maximize a preset function, allowing REs from the same sub-channel to be allocated to different UEs, thereby improving system use efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If resource allocation is based on sub-channel pairing, then the allocation process is simple to implement, but the system use efficiency is poor
Solution Approach 1:
The patent segments the resource allocation process into two independent stages: sub-channel pairing (for resource allocation) and resource element allocation (for resource distribution). This allows the system to first determine which sub-channels are paired between BS-RS and RS-UE links, then independently allocate resource elements within those paired sub-channels to different UEs based on channel conditions and QoS requirements, thereby improving system use efficiency without complicating the overall allocation process
Solution Approach 2:
The patent introduces a new dimension of resource allocation by separating sub-channel pairing from resource element allocation. Instead of treating resource allocation as a single-dimensional sub-channel assignment, the system adds the resource element allocation dimension, allowing multiple UEs to share paired sub-channels through differentiated resource element distribution, thus enhancing system efficiency
2Productivity
If REs from the same sub-channel are allocated to different UEs, then the use efficiency of system resources is improved, but the allocation complexity increases
Solution Approach 1:
The patent divides the allocation complexity into manageable segments: first perform sub-channel pairing based on channel information, then allocate resource elements within each paired sub-channel to different UEs. This segmentation allows the system to handle complexity in discrete steps rather than simultaneously optimizing all parameters, making the enhanced allocation process more tractable
Solution Approach 2:
The patent performs preliminary sub-channel pairing before resource element allocation. By first identifying which sub-channels are paired between the BS-RS and RS-UE links based on channel conditions, the system establishes a framework that guides subsequent resource element allocation, reducing the overall computational complexity compared to simultaneous optimization
Data Source
AI summary
The present invention provides a resource allocation method and device for an amplify-and-forward relay network. The method includes: obtaining channel information, where the channel information includes channel information between a base station BS and a relay station RS and channel information between the RS and each user equipment UE; calculating, according to the channel information, resource use information of each UE on each sub-channel pairing; and obtaining, according to the resource use information, the number of REs allocated to each UE on each sub-channel pairing, where the obtained number of the REs enables a preset first function to obtain a maximum value. In the embodiments of the present invention, the use efficiency of the resources may be improved.