Power Line Coexistence via Blank Resource Allocation
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Solution Overview
Problem
Heterogeneous systems using different protocols installed and operated on the same power line face signal interference and resource allocation challenges, leading to increased complexity in resource allocation based on traffic volume, which existing technologies struggle to efficiently manage.
Innovation Solution
A method for detecting and allocating blank resources among heterogeneous systems in a power line communication system, where a detection unit identifies non-sharing systems and allocates additional systems to these resources, updating resource maps to ensure efficient allocation without data sharing, and managing periodicities of ISP signals to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource allocation is based on traffic volume with priority concepts for heterogeneous systems, then resource distribution efficiency is improved, but calculation complexity increases
Solution Approach 1:
The patent segments the power line communication resources into distinct TDMU (Time Division Multiplexing Unit) structures, where each TDMU contains multiple TDMS (Time Division Multiplex Slot) sub-slots. This segmentation allows heterogeneous systems to be allocated specific TDMUs based on traffic volume without requiring complex centralized calculations, as each TDMU operates semi-independently with predefined slot structures.
Solution Approach 2:
The patent implements preliminary action by pre-defining the TDMU and TDMS slot structures before actual data transmission begins. Resource allocation patterns are established in advance through standardized frame structures, eliminating the need for real-time complex calculations during data transmission. The system prepares allocation templates that are repeatedly applied based on traffic requirements.
2Adaptability or versatility
If multiple heterogeneous systems operate simultaneously on the same power line, then system versatility is improved, but signal interference increases
Solution Approach 1:
The patent divides the power line communication bandwidth into multiple TDMUs, with each TDMU further divided into TDMS slots. Heterogeneous systems are assigned to specific TDMUs and slots, creating temporal and spectral separation that prevents signal interference while maintaining support for multiple system types simultaneously.
Solution Approach 2:
The patent employs periodic TDMU structures with fixed frame lengths and regular slot allocations. Each heterogeneous system transmits data in periodic intervals according to its assigned slot schedule, ensuring that transmissions from different systems do not overlap in time, thereby eliminating signal interference while supporting diverse system periodicities.
3Quantity of substance
If blank resources are allocated to additional heterogeneous systems, then resource utilization is improved, but detection complexity increases
Solution Approach 1:
The patent implements self-service detection mechanisms where each heterogeneous system autonomously identifies blank resources within its assigned TDMU slots by monitoring slot occupancy indicators. Systems independently detect available resources without requiring centralized coordination or complex inter-system communication, simplifying the detection process while maximizing resource utilization.
Solution Approach 2:
The patent employs feedback mechanisms where each heterogeneous system reports slot usage status to the allocation controller. Based on this feedback, the system dynamically identifies blank resources and reallocates them to additional systems. The feedback loop uses simple occupancy bits rather than complex resource descriptions, reducing detection complexity while improving overall resource utilization.
Data Source
AI summary
A coexistence communication method for broadband power line communication that allocates a resource of another heterogeneous system to a blank resource in data where a plurality of heterogeneous systems are allocated to time division multiplex units (TDMUs) in a distribution scheme and a system therefor are provided. The method includes detecting a blank resource according to a heterogeneous system which does not share a power line among a plurality of heterogeneous systems, from data in which the plurality of heterogeneous systems which share the power line to perform power line communication are allocated to a plurality of TDMUs and in which each TDMU is allocated to a plurality of time division multiplex slots (TDMSs) sorted over time in a distribution scheme and allocating added another heterogeneous system to the blank resource.