Relay Node MU-MIMO Exclusion for Wireless Resource Allocation
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Solution Overview
Problem
In wireless networks utilizing multi-user multiple-input multiple-output (MU-MIMO) operating mode, relay nodes are not effectively managed, leading to resource allocation inefficiencies and potential overloading, as they are not differentiated from end-user devices in scheduling, affecting their own air-interface resources and network throughput.
Innovation Solution
A method and system that dynamically identify relay nodes and instruct them not to use the MU-MIMO operating mode, while allowing end-user devices to do so based on signal measurements and attached user thresholds, thereby optimizing resource allocation and prioritizing relay nodes with high loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay nodes are scheduled using MU-MIMO mode like end-user devices, then resource utilization is maximized, but relay nodes may become overloaded and lose their own air-interface resources
Solution Approach 1:
The patent segments wireless devices into two distinct categories: relay nodes and end-user devices. The scheduling module identifies relay nodes by checking if they have attached user devices, then applies different scheduling rules - relay nodes are excluded from MU-MIMO mode while end-user devices are allowed to use it. This segmentation resolves the contradiction by ensuring relay nodes maintain dedicated resources while end-user devices benefit from MU-MIMO resource utilization.
2Reliability
If relay nodes are differentiated from end-user devices in scheduling, then relay node resources are protected, but scheduling complexity increases
Solution Approach 1:
The patent implements a self-service mechanism where relay nodes automatically indicate their status by reporting attached user device information. The scheduling module simply checks this indicator to determine whether to apply MU-MIMO scheduling - if relay node, exclude from MU-MIMO; if end-user device, allow MU-MIMO. This self-identifying approach minimizes scheduling complexity while ensuring proper resource differentiation.
3Productivity
If all wireless devices are allowed to use MU-MIMO mode, then network throughput is maximized, but relay nodes experience overloading and resource starvation
Solution Approach 1:
The patent extracts relay nodes from the general pool of wireless devices eligible for MU-MIMO scheduling. By identifying devices with attached users as relay nodes and explicitly excluding them from MU-MIMO mode, the system prevents relay node overloading while allowing end-user devices to fully utilize MU-MIMO for maximum network throughput. This extraction resolves the contradiction by protecting relay nodes while maintaining overall network productivity.
Data Source
AI summary
A wireless network is configured to utilize a multi-user multiple-input multiple-output (MU-MIMO) operating mode. a first subset of wireless devices in a sector that are configured as relay nodes are identified. A second subset of wireless devices in the sector that are not configured as relay nodes are also identified. One or more wireless device in the first subset of wireless devices are instructed, allocated resources, or otherwise controlled to not utilize the MU-MIMO operating mode.