Wireless Relay Resource Partitioning and Association
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Solution Overview
Problem
Existing wireless communication networks with relays face challenges in efficiently managing resource partitioning and association, leading to suboptimal performance due to interference and link imbalances, particularly between access and backhaul links.
Innovation Solution
A method for performing joint association and resource partitioning in wireless networks with relays, where nodes compute local and overall metrics to determine the best allocation of resources to nodes and links, considering various possible actions and their impact on performance, to select serving nodes and optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relays are deployed to improve coverage and capacity, then network coverage and capacity are enhanced, but interference and link imbalances between access and backhaul links increase
Solution Approach 1:
The patent segments the relay station's resources into distinct access link resources and backhaul link resources. The base station determines resource partitioning by separately identifying resources for UE communication (access link) and resources for relay communication (backhaul link), thereby managing interference through resource separation while maintaining improved network capacity
Solution Approach 2:
The patent applies local quality by assigning different resource allocations and partitioning strategies to different links (access vs. backhaul) based on their specific requirements. The base station determines optimal resource partitioning for each link type, allowing tailored resource management that addresses local interference conditions while maintaining overall network productivity
2Productivity
If joint association and resource partitioning is performed, then network performance and user throughput are improved, but computational complexity and signaling overhead increase
Solution Approach 1:
The patent performs preliminary association between relays and base stations before resource partitioning is executed. The base station determines resource partitioning based on pre-established association relationships, which simplifies the computational complexity by avoiding simultaneous optimization of both association and resource allocation, while still achieving improved user throughput through coordinated resource management
Solution Approach 2:
The patent implements dynamic resource partitioning where the base station continuously determines optimal resource allocation based on current network conditions and association states. This dynamic approach allows the system to adapt to changing conditions and improve user throughput while managing computational complexity through incremental updates rather than complete re-optimization
Data Source
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AI summary
Techniques for performing association and resource partitioning in a wireless network with relays are described. In an aspect, resource partitioning may be performed to allocate available resources to nodes and access/backhaul links of relays. In one design, a node computes local metrics for a plurality of possible actions related to resource partitioning. The node receives local metrics for the possible actions from at least one neighbor node and determines overall metrics for the possible actions based on the computed and received local metrics. The node determines resources allocated to a set of nodes and resources allocated to the access and backhaul links of at least one relay based on the overall metrics for the possible actions. In another aspect, association involving relays may be performed by taking into account the performance of the relays. In yet another aspect, association and resource partitioning may be performed jointly.