Home Network Domain Master Interference Coordination
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Solution Overview
Problem
Neighboring networks experiencing interference due to shared media transmission, where current solutions like orthogonal preambles and TDMA are inefficient as they require domain-specific encoding and time slot allocation, which is not necessary for all nodes.
Innovation Solution
A domain master with a receiver, scheduler, interference evaluator, planner, and inter-domain coordinator that schedules transmissions based on interference levels, allocates protected zones for high interference nodes, and uses orthogonal preambles for low interference nodes, allowing efficient coordination of MAC cycles across domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If orthogonal preambles are used for all nodes, then interference between neighboring domains is reduced, but device complexity and resource overhead increase unnecessarily for low-interference nodes
Solution Approach 1:
The patent applies local quality by differentiating the treatment of nodes based on their specific interference conditions. High-interference nodes receive protected zones with orthogonal preambles, while low-interference nodes use default preambles. This localized approach ensures that complexity is applied only where necessary, rather than uniformly across all nodes.
Solution Approach 2:
The patent changes the parameter of preamble type based on interference level. Nodes dynamically adjust their transmission parameters (preamble type, time slot allocation) according to their detected interference conditions, allowing the system to adapt resource allocation to actual network conditions rather than using fixed domain-specific encoding for all nodes.
2Object-affected harmful factors
If TDMA time slot allocation is implemented for all nodes, then neighboring domain interference is mitigated, but productivity decreases due to reduced transmission opportunities
Solution Approach 1:
The patent segments the network into high-interference and low-interference node groups, applying different transmission strategies to each segment. Protected zones with TDMA-like allocation are created only for high-interference nodes, while low-interference nodes maintain full transmission opportunities. This segmentation avoids the productivity loss that would result from applying TDMA to all nodes.
Solution Approach 2:
The patent applies partial action by implementing interference mitigation measures (protected zones, orthogonal preambles) only for the subset of nodes that actually require them (high-interference nodes), rather than applying the full TDMA allocation scheme to all nodes. This partial application maintains productivity for low-interference nodes while still protecting against interference where necessary.
3Reliability
If protected zones are allocated for high-interference nodes, then transmission reliability improves, but resource utilization decreases due to reserved time slots
Solution Approach 1:
The patent implements dynamic protected zone allocation where the existence and characteristics of protected zones are determined based on actual interference detection. Nodes periodically detect interfering preambles, and the domain master dynamically creates or removes protected zones accordingly. This dynamic approach ensures that protected zones (and their associated resource reservations) exist only when actually needed, optimizing the balance between reliability and resource utilization.
Data Source
AI summary
A method of generating a transmission schedule for a network device of a home network includes ensuring that strongly interfering nodes of different domains do not transmit simultaneously while enabling other non interfering nodes of the different domains to transmit simultaneously. A domain master for a home network includes a receiver and a scheduler. The receiver receives at least one transmission from at least one node of its domain indicating at least one node of at least one neighboring domain whose transmissions are interfering. The scheduler schedules transmissions of said nodes of its domain in coordination with a domain master of said neighboring domain according to inter-domain node interference.