Coexistence Manager for Spectrum Sharing Coordination
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Solution Overview
Problem
Existing spectrum sharing technologies fail to efficiently manage network coexistence and interference between devices operating in shared TV bands, leading to reduced network performance due to inadequate coordination and resource management.
Innovation Solution
Implementing a coexistence management system with a coexistence manager (CM) and coexistence enabler (CE) that negotiates resource allocation through bidding processes, using tokens, and coordinates spectrum use among multiple networks to mitigate interference, enabling intra-CM and inter-CM coordination for efficient spectrum sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple devices attempt to access a common portion of spectrum concurrently, then spectrum utilization increases, but interference increases and network performance decreases
Solution Approach 1:
The patent introduces a Coexistence Manager (CM) as an intermediary entity that mediates between multiple networks seeking to use the same spectrum. The CM receives spectrum usage requests, coordinates with other CMs through negotiation or bidding processes, and allocates spectrum resources to prevent interference while maximizing utilization. This intermediary mechanism enables multiple networks to share spectrum efficiently without direct interference.
2Productivity
If spectrum resources are shared among multiple networks, then resource efficiency improves, but coordination complexity increases
Solution Approach 1:
The Coexistence Manager acts as a centralized coordinator that simplifies the complexity of multi-network spectrum sharing. Instead of each network directly coordinating with every other network (which would create exponential complexity), the CM provides a single point of coordination. The CM handles neighbor discovery, spectrum availability determination, and allocation decisions, reducing coordination complexity to linear relationships between networks and the CM.
Solution Approach 2:
The system implements feedback mechanisms where the CM continuously monitors spectrum usage, receives requests from networks, and adjusts allocations based on current conditions. The CM negotiates with neighboring CMs to understand their spectrum needs and availability, then makes informed allocation decisions. This feedback loop enables dynamic resource efficiency while maintaining manageable coordination through iterative optimization.
3Object-affected harmful factors
If a coexistence management system implements comprehensive coordination between multiple networks, then interference mitigation improves, but system complexity increases
Solution Approach 1:
The patent segments the spectrum sharing problem into distinct functional components: neighbor discovery, spectrum availability determination, spectrum request handling, and allocation decision-making. Each component is handled by the CM as a separate process, making the overall system more manageable. The CM can implement different coordination strategies (negotiation or bidding) as separate modules, allowing flexibility without increasing overall system complexity.
Solution Approach 2:
The CM serves as an intermediary that centralizes the complexity of interference mitigation. Rather than requiring each network to implement complex interference avoidance logic, the CM handles all coordination, negotiation, and allocation decisions. This concentrates the complexity in a single entity that can optimize interference mitigation across the entire system while keeping individual networks simple.
Data Source
AI summary
Systems and methods are provided for coexistence management service for licensed and unlicensed spectrum sharing. A coexistence system may include a coexistence manager (CM) that may provide resource allocation services for a coexistence enabler (CE). CMs may negotiate with each other to resolve coexistence issues via directly or indirectly through a coexistence discovery and information server (CDIS). A channel may be exclusively used by a CE network. The networks may mitigate interference by avoiding use of the same channels. A channel may be shared by multiple CE networks. In co-channel sharing, the networks may mitigate interference via power management. Bidding processes may be implemented directly via competing CMs, for example via open or silent token auction. Bidding processes among competing CMs may be managed by a third party entity, for example a CDIS, for example via open or silent token auction.