Adaptive Resource Negotiation for Inter-Cell Interference Coordination
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Solution Overview
Problem
Wireless communication networks face interference issues due to resource allocation challenges between base stations, leading to degraded performance on both downlink and uplink communications.
Innovation Solution
Implementing a method for adaptive resource negotiation between base stations, where a first base station sends a resource status message to a second base station, receives proposed resource partitioning, and schedules resources accordingly to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If base stations allocate resources independently without coordination, then each base station can maximize its own resource utilization, but interference between cells increases and overall network performance degrades
Solution Approach 1:
The patent introduces an X2 interface as an intermediary communication channel between base stations (eNBs). This interface enables direct negotiation and coordination of resource allocation decisions, allowing base stations to share resource status information and coordinate their scheduling decisions to minimize inter-cell interference while maintaining high resource utilization.
Solution Approach 2:
The patent implements a feedback mechanism where base stations continuously exchange resource status messages through the X2 interface. Each base station reports its resource utilization status, and receiving base stations use this feedback information to adjust their resource allocation decisions, creating a closed-loop system that dynamically optimizes resource distribution and minimizes interference.
2Object-affected harmful factors
If base stations coordinate resource allocation through negotiation, then interference between cells is reduced, but communication overhead and system complexity increase
Solution Approach 1:
The patent segments the resource coordination problem into independent, manageable components. Each base station independently evaluates its own resource status and generates negotiation messages based on local conditions. The X2 interface handles specific, discrete message types (resource status, proposed partitioning, acceptance/rejection) rather than requiring complex continuous negotiation, reducing overall system complexity.
Solution Approach 2:
The patent enables base stations to autonomously make resource allocation decisions based on received negotiation messages. Each eNB independently determines its resource status, generates proposed resource partitioning messages, and makes acceptance decisions without requiring centralized control or complex coordination protocols, thereby reducing system complexity while achieving interference coordination.
3Reliability
If resources are reallocated to reduce interference, then network performance improves, but resource partitioning flexibility decreases
Solution Approach 1:
The patent implements dynamic resource partitioning where the resource allocation configuration is not fixed but continuously adapted based on real-time network conditions. Base stations negotiate and adjust resource partitioning dynamically through ongoing X2 interface communication, allowing the system to maintain both interference coordination and adaptability to changing traffic patterns and channel conditions.
Solution Approach 2:
The patent changes the parameters of resource allocation by introducing negotiable resource partitioning configurations. Instead of fixed resource assignments, the system allows base stations to propose and adjust partitioning parameters (such as resource block allocations, time-frequency assignments) through message exchange, enabling flexible adaptation while maintaining performance through coordinated parameter optimization.
Data Source
AI summary
Methods and apparatus for supporting adaptive resource negotiation between evolved node Bs (eNBs) for enhanced inter-cell interference coordination (eICIC) are provided. This resource negotiation may occur via a network backhaul between the eNBs or, in some cases, using over-the-air messages (OAMs). For certain aspects, a first eNB may propose its adaptive resource partitioning information (ARPI) to a second eNB, where the second eNB may accept or reject the proposed resource partitioning. If the second eNB accepts the proposed partitioning, the second eNB may schedule resources, such as subframes, based on the accepted partitioning.