Pico eNB Resource Partitioning Feedback for Interference Reduction
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Solution Overview
Problem
In wireless communication networks, especially heterogeneous networks, existing resource allocation mechanisms fail to efficiently coordinate resources between macro and pico base stations, leading to interference and resource waste due to lack of feedback and coordination, resulting in suboptimal performance for user equipment (UE) in dominant interference scenarios.
Innovation Solution
The method involves receiving and determining usable resources from neighboring base stations, sending an indication of these resources, and adjusting resource partitioning information (RPI) to minimize interference and optimize resource usage, allowing pico eNBs to interact with multiple macro eNBs for protected resource allocation and reducing resource waste through synchronized status reports and negotiation phases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource partitioning information is allocated without feedback mechanism, then allocation process is simple, but resource allocation efficiency is poor and interference coordination is inadequate
Solution Approach 1:
The patent implements a feedback mechanism where the pico eNB sends resource usage status reports to macro eNBs, and macro eNBs send RPI adjustments based on this feedback. This closed-loop feedback system enables dynamic resource optimization and interference coordination between macro and pico cells, resolving the contradiction by making the system adaptive while maintaining manageable complexity through standardized message exchanges.
Solution Approach 2:
The system enables base stations to autonomously negotiate and adjust resource partitioning without centralized control. The macro eNBs and pico eNB independently determine their resource needs and capabilities, performing self-service resource allocation through direct communication, which improves efficiency without requiring complex centralized coordination.
2Loss of energy
If macro eNBs allocate resources without knowing pico eNB actual usage, then allocation is straightforward, but resource waste occurs due to lack of coordination
Solution Approach 1:
The patent establishes a feedback loop where the pico eNB reports its actual resource usage status to macro eNBs through status report messages. This information feedback eliminates resource waste by enabling macro eNBs to accurately understand pico eNB needs and adjust RPI accordingly, preventing both over-allocation and under-allocation of resources.
Solution Approach 2:
The system performs preliminary resource status assessment and negotiation before actual resource allocation. The macro eNBs and pico eNB exchange information about resource capabilities and requirements in advance, allowing optimized RPI to be determined before resources are actually assigned, thereby minimizing resource waste from the outset.
3Object-affected harmful factors
If resource partitioning is adjusted dynamically, then interference coordination improves, but signaling overhead increases
Solution Approach 1:
The patent implements partial dynamic adjustment of RPI, where only specific resource parameters are negotiated and adjusted based on actual interference conditions rather than complete re-allocation. This selective adjustment reduces signaling overhead while still achieving effective interference coordination in critical areas.
Solution Approach 2:
The system employs periodic resource status reporting and RPI adjustment rather than continuous signaling. Base stations exchange resource status information and adjust partitioning at scheduled intervals, which reduces signaling overhead while maintaining effective interference coordination through regular updates.
Data Source
AI summary
Methods and apparatus for effectively allocating resource partitioning information (RPI) in a wireless communication network are provided. For certain aspects, a method for wireless communications generally includes receiving, at a first base station, such as a pico enhanced Node B (eNB), resource partitioning information (RPI) from at least one second base station, such as a macro eNB; determining one or more resources indicated in the RPI actually usable by the first base station; and sending, from the first base station to the at least one second base station, an indication of the actually usable resources.