Buddy Transceiver Relay with Adaptive Delay for RF Capacity

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Solution Overview

Problem

Conventional wireless communication systems face inefficiencies and instability due to the flooding of information and complexity in mesh networks, particularly in relaying data from out-of-range devices, which leads to wasted RF data capacity and increased failure modes.

Innovation Solution

A method that employs 'Buddy' transceivers to selectively relay messages from out-of-range devices, measuring signal quality and delaying retransmissions inversely proportional to it, with an acknowledgement system to discard pending messages, thus minimizing RF capacity usage and eliminating the need for complex routing tables.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If repeaters are used to relay transmissions from out-of-range devices, then the coverage range is extended, but the RF data capacity is wasted due to unnecessary repetition of messages already received directly by the collector

Engineering Contradiction:
Improvecoverage rangeVSAvoidRF data capacity
Core Design Contradiction:
Area of stationary objectVSLoss of energy

Solution Approach 1:

The system performs preliminary actions by having the collector broadcast acknowledgment messages before repeaters retransmit data. This allows repeaters to check whether their relay is necessary, preventing wasted RF capacity on redundant transmissions while maintaining extended coverage capability.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If mesh networks are used to relay messages through multiple distributed nodes, then the system can adapt to changing RF conditions and self-heal, but the device complexity increases due to distributed databases and routing algorithms

Engineering Contradiction:
Improveadaptability to RF changesVSAvoidrouting database complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The collector acts as an intermediary that centralizes the acknowledgment function. Instead of each repeater maintaining complex routing databases and making independent routing decisions, the collector receives acknowledgments and manages the routing information, significantly reducing device complexity while preserving adaptability through the acknowledgment mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If full duplex repeaters are used to relay transmissions, then the relay capability is improved, but the RF spectrum requirement doubles due to simultaneous receive and transmit operations

Engineering Contradiction:
Improverelay capabilityVSAvoidRF spectrum
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The system uses periodic action by implementing half-duplex operation with time-division multiplexing. Repeaters alternate between receiving and transmitting modes based on collector acknowledgments, maintaining full relay capability while using only one direction of RF spectrum at a time, thus avoiding the doubling of spectrum requirements.

Inventive Principle:
Principle #19Periodic action

Data Source

PatentUS7706745B2Method, system, apparatus, and computer program product for communications relay
Publication Date: 2010.04.27 SENSUS SPECTRUM LLC
  • US7706745B2 patent drawing
  • US7706745B2 patent drawing
  • US7706745B2 patent drawing

AI summary

A method, system, apparatus, and computer program product for relaying packet information from an Out of Range Device (ORD) to a communications tower. The method includes transmitting a message from the ORD. The message is recognizable by a transceiver device as a message to be repeated. The message is stored in the transceiver device which also measures a received signal quality of the message, and relays the message after delaying for a time interval inversely proportional to received signal quality.