Relay Node Power Capability Reporting for Wireless Networks
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Solution Overview
Problem
Current wireless communication networks lack efficient methods to manage relay nodes' output power capabilities for backhaul and access links separately, leading to potential over-allocation or underutilization of resources due to the assumption of equal maximum output powers for both links.
Innovation Solution
Relay nodes are configured to report their maximum and minimum output power capabilities separately for backhaul and access links to network nodes, using absolute, relative, or scenario-based reporting methods, enabling network management functions like radio resource management and network planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If relay nodes assume equal maximum output powers for backhaul and access links, then device complexity is reduced, but resource allocation accuracy deteriorates
Solution Approach 1:
The patent segments the power capability reporting by separating backhaul link power capabilities from access link power capabilities. The relay node reports different maximum output powers for backhaul links (Pmax_BL) and access links (Pmax_AL) independently, allowing the network to accurately understand and allocate resources for each link type without requiring complex unified modeling.
2Measurement precision
If relay nodes report separate power capabilities for backhaul and access links, then resource allocation accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent changes the reporting parameter from absolute power values to power class indicators. Instead of reporting detailed power measurements, the relay node reports discrete power class values (e.g., N1 for backhaul, N2 for access) that map to standardized power levels. This reduces signaling overhead while maintaining sufficient accuracy for resource allocation decisions.
3Productivity
If relay nodes use different maximum output powers for backhaul and access links, then network performance is improved, but device complexity increases
Solution Approach 1:
The patent introduces dynamic power allocation where the relay node can independently adjust maximum output powers for backhaul and access links based on network conditions and reported power class capabilities. The network node configures different Pmax values for each link type, enabling flexible and efficient resource utilization without requiring complex manual configuration at the relay node.
Data Source
AI summary
A relay node (800) reports its output power capability to a donor base station or other network node separately for the relay node's backhaul and access links, which may have different maximum output power. A corresponding network node (900), such as a donor base station, an Operations & Maintenance node, an Operational Support Systems node, a Self-Organizing Network node, is configured to request the relay node (800) to report its backhaul link and access link output power class capabilities or maximum output powers or rated output powers to the network node (900), and then to receive the reported capabilities in response. The report may specify a per-antenna transmit power capability; this may be specifically requested in some cases. The received relay node power-class capability information for the backhaul and access links is then used for one or several network management functions, such as radio resources management or network planning and dimensioning.