Radio Node Dynamic Transmission Capacity Reservation
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Solution Overview
Problem
Existing radio communication networks face inefficiencies due to high overhead and reduced throughput caused by exclusive slot assignments, which prevent non-interfering nodes from communicating effectively.
Innovation Solution
A node for a radio communication network with dynamic reservation of transmission capacity, utilizing a communication unit that reserves capacity through RTS, CTS, and nCTS handshake packets, and limits reservations based on properties like position information and signal quality, allowing flexible antenna configurations and proactive interference detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If exclusive slot assignments are used for RTS and CTS messages, then interference between transmissions is prevented, but overhead increases and network throughput decreases
Solution Approach 1:
The patent applies dynamics by transitioning from static exclusive slot assignments to dynamic reservation mechanisms. Nodes dynamically reserve transmission capacity based on actual communication needs and interference conditions, allowing slots to be allocated flexibly rather than fixed in advance. This resolves the contradiction by maintaining interference prevention through dynamic coordination while eliminating the overhead of reserving slots for nodes that don't need them.
Solution Approach 2:
The patent implements local quality by making reservation decisions at individual node levels based on their specific communication needs and interference environment. Each node evaluates its own requirements and reserves capacity locally rather than requiring global exclusive slot assignments. This allows nodes with actual transmission needs to secure resources while nodes without needs remain unaffected, reducing overall overhead and improving throughput.
2Reliability
If exclusive slots are assigned to all nodes, then transmission interference is avoided, but nodes without direct contact cannot communicate effectively
Solution Approach 1:
The dynamic reservation mechanism allows nodes to adapt their slot usage based on actual communication requirements. Nodes can reserve slots when needed and release them when not required, enabling flexible communication patterns. This resolves the contradiction by allowing nodes without direct contact to communicate through coordinated reservations rather than being blocked by rigid exclusive assignments.
Solution Approach 2:
The reservation mechanism serves multiple functions: it prevents interference for direct transmissions, enables indirect communications through coordinated reservations, and adapts to varying network conditions. This multi-functionality resolves the contradiction by making the system universally applicable to different communication scenarios without requiring node-specific exclusive slots.
3Device complexity
If RTS and CTS messages are transmitted in exclusive slots, then collision detection is simplified, but network overhead increases significantly
Solution Approach 1:
The patent extracts the essential function of collision detection from the exclusive slot mechanism. Instead of relying on exclusive slots to prevent all collisions, the system uses targeted reservations and interference detection to identify and resolve only the necessary conflicts. This reduces overhead by removing unnecessary exclusive slot assignments while maintaining effective collision detection for actual interfering transmissions.
Solution Approach 2:
The system applies partial action by reserving slots only when and where needed rather than for all possible transmissions. Nodes make selective reservations based on actual interference conditions, avoiding the excessive action of reserving slots for all nodes regardless of need. This partial approach reduces network overhead while maintaining sufficient collision detection capability for active transmissions.
Data Source
AI summary
A node for a radio communication network with dynamic reservation of transmission capacity is provided. Said node comprises a communication unit for communicating with at least one neighboring node, and at least one antenna coupled to said communication unit. In this context, the communication unit is configured to reserve transmission capacity on the basis of at least one RTS and/or CTS and/or nCTS handshake packet. In addition to this, the communication unit is further configured to limit transmission capacity reservation to a certain number of the at least one neighboring node on the basis of certain properties with respect to said certain number of the at least one neighboring node.