Relay Service Scope Reduction for Donor Node Load Management
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Solution Overview
Problem
In wireless communication systems, donor access nodes experience heavy load on their air interfaces due to serving relays and end-user UEs, leading to delayed or blocked communications when resource utilization reaches a threshold, especially in scenarios where landline connections are impractical.
Innovation Solution
The system determines when the donor access node's air interface is heavily loaded and instructs the relay to reduce its coverage area or frequency bandwidth, thereby limiting the number of UEs that can connect and reducing the overall load on the donor access node's air interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the relay provides full service coverage and frequency bandwidth, then the coverage area and service capability are maximized, but the load on the donor access node's air interface becomes excessively high causing communication delays and blockages
Solution Approach 1:
The relay dynamically adjusts its coverage footprint and frequency bandwidth based on real-time air interface load conditions. When the donor access node's air interface becomes heavily loaded, the relay reduces its service scope by adjusting antenna patterns, transmission power, or active frequency bands, thereby adapting the system to varying load conditions and preventing communication blockages
Solution Approach 2:
The system changes operational parameters of the relay including coverage area size, frequency bandwidth allocation, and transmission power levels. These parameter adjustments are made in response to air interface load thresholds, allowing the relay to optimize between providing comprehensive coverage and maintaining acceptable resource utilization on the donor access node
2Productivity
If the relay reduces coverage area or frequency bandwidth to reduce load, then the air interface resource utilization improves, but the service capability and coverage area are reduced
Solution Approach 1:
The relay implements dynamic service scope adjustment by modifying antenna beam patterns, transmission power levels, and active frequency bands based on real-time air interface load conditions. This allows the system to adapt service capability to match current network conditions, providing full service when resources are available and reduced service when the donor access node is heavily loaded
Data Source
AI summary
A method and system for controlling configuration of a relay, where the relay has a coverage footprint and provides service on a first air interface having a frequency bandwidth, and where the relay is served by a donor access node over a second air interface on which the donor access node provides service. Per the disclosure, an entity detects that load on the second air interface on which the donor access node provides service is threshold high, and in response to at least that detecting, the relay is made to reduce the coverage footprint of the relay and/or to reduce the frequency bandwidth of the first air interface on which the relay provides service.