Wireless Air Interface Resource Allocation for Relay Nodes
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Solution Overview
Problem
In heterogeneous wireless networks, ensuring high-quality wireless backhaul for relay nodes serving diverse end-user devices with varying bandwidth capabilities is challenging, particularly when different types of relay nodes serve a mix of 5G and 4G capable devices, requiring efficient allocation of wireless air interface resources to maintain service quality.
Innovation Solution
The method involves determining the bandwidth capabilities of end-user devices attached to relay nodes and prioritizing data packets from relay nodes serving a threshold quantity of high-bandwidth devices, preferentially allocating wireless air interface resources to those nodes, thereby ensuring quality of service by optimizing resource allocation based on device capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If relay nodes serve increasing numbers of end-user wireless devices with diverse capabilities, then network coverage and service capacity are improved, but maintaining high-quality wireless backhaul for all relay nodes becomes difficult
Solution Approach 1:
The patent applies local quality by differentiating resource allocation based on the specific characteristics of each relay node's served devices. Instead of uniform treatment, the system identifies relay nodes serving high-bandwidth-capable devices (5G devices) and provides them with prioritized wireless air interface resources, while relay nodes serving only legacy devices receive standard allocation. This localized differentiation maintains backhaul quality for critical relay nodes while managing overall network capacity.
2Ease of operation
If wireless air interface resources are allocated uniformly to all relay nodes, then resource allocation simplicity is maintained, but service quality for relay nodes serving high-bandwidth devices deteriorates
Solution Approach 1:
The patent implements parameter changes by dynamically adjusting the weight parameter (w_i) for each relay node based on the bandwidth capability of served end-user devices. Relay nodes serving 5G-capable devices are assigned higher weights, which translates to prioritized resource allocation during scheduling. This parameter-based differentiation enables quality-of-service guarantees without requiring complex structural changes to the resource allocation framework.
3Reliability
If prioritized resource allocation is implemented for relay nodes serving high-bandwidth devices, then service quality for those nodes is improved, but allocation complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing the weight parameters (w_i) for each relay node based on the bandwidth capabilities of their served end-user devices. These weights are determined in advance during device attachment or capability reporting phases, before actual resource allocation occurs. During scheduling, the pre-computed weights are simply applied to prioritize resource grants, avoiding real-time complex analysis and reducing allocation complexity while maintaining service quality differentiation.
Data Source
AI summary
Prioritizing air interface resource allocation for relay nodes serving end-user wireless devices with higher bandwidth capabilities, such as 5G and beyond, versus relay nodes serving end-user wireless devices that do not have such capabilities. The bandwidth capability can be based on an average or threshold bandwidth capability of end-user wireless devices. Systems and methods disclosed are implemented in 5G EN-DC heterogeneous networks.