Frequency Hopping Receiver Retry Threshold Synchronization

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Solution Overview

Problem

Frequency agility hopping methods, such as those used in cordless mouse designs, often result in synchronization issues between transmitter and receiver devices due to differing channel conditions in wireless environments, leading to occasional collisions and out-of-sync scenarios.

Innovation Solution

Incorporating a receiver and transmitter device design that includes a circuit to determine if a retry parameter exceeds a threshold, allowing for synchronized frequency changes based on retry counts or timeouts, ensuring both devices switch channels simultaneously.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional frequency hopping methods are used to hop across the entire frequency band in random and periodic fashion, then transmission rate is improved and power consumption is reduced, but synchronization issues occur between transmitter and receiver leading to collisions

Engineering Contradiction:

Improvetransmission rateVSAvoidsynchronization between transmitter and receiver

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements feedback mechanisms where the receiver detects transmission failures and sends feedback signals to the transmitter. The transmitter monitors acknowledgment signals from the receiver and adjusts its transmission strategy based on this feedback, enabling synchronized frequency changes and resolving the contradiction between high transmission rate and synchronization reliability.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent dynamically changes transmission parameters including frequency hopping patterns, retry counts, and timeout values based on channel conditions. By adjusting these parameters in response to detected interference or transmission failures, the system maintains both high productivity and reliable synchronization between transmitter and receiver.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If frequency hopping is performed rapidly to mitigate interference from collocated wireless networks, then transmission reliability is improved, but synchronization issues and collisions occur due to differing channel conditions

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidout-of-sync periods

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent implements preliminary actions by pre-configuring retry mechanisms and timeout thresholds before transmission begins. The system prepares frequency hopping patterns and synchronization protocols in advance, allowing both transmitter and receiver to anticipate and coordinate frequency changes, thereby minimizing out-of-sync periods while maintaining transmission reliability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent ensures continuous useful action by implementing seamless frequency hopping where the receiver continuously monitors for transmissions and the transmitter continuously attempts delivery with adaptive retries. This continuous operation eliminates gaps and synchronization losses that would otherwise occur during frequency transitions.

Inventive Principle:

Principle #20Continuity of useful action

3Productivity

If retry mechanisms are implemented to handle transmission failures, then data throughput is improved, but device complexity increases due to additional circuits for parameter determination and frequency changing

Engineering Contradiction:

Improvedata throughputVSAvoidcircuit complexity for retry management

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements multi-functional circuits that perform multiple tasks. The determination circuit both monitors retry parameters and controls frequency changing operations, while the frequency changer circuit simultaneously handles frequency transitions and synchronization coordination. This universal approach increases device complexity only minimally while achieving significant throughput improvements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the retry management function with the existing frequency hopping mechanism. Instead of adding separate retry circuits, the system integrates retry logic into the frequency hopping controller, combining parameter determination and frequency changing operations into a unified control structure that minimizes additional complexity.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10826558B2Receiver devices, transmitter devices, methods for controlling a receiver device, methods for controlling a transmitter device, and computer-readable media

Publication Date: 2020.11.03 RAZER ASIA PACIFIC

AI summary

According to various embodiments, a receiver device may be provided. The receiver device may include: a receiver circuit configured to receive a data packet according to a data format on a pre-determined radio frequency, wherein the data format comprises a parameter indicating a number of retries of transmission of the data packet; a determination circuit configured to determine whether the parameter is higher than a pre-determined threshold; and a frequency changer circuit configured to change a frequency on which the receiver receives data based on the determination.