Parallel Wireless Connection Reconnection Notification Control

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Solution Overview

Problem

In wireless communication systems, maintaining efficient communication processing during simultaneous operations in multiple modes, such as infrastructure and peer-to-peer modes, is challenging, especially when one connection is disconnected and reconnected, as it requires managing conflicts in service names and reducing redundant inquiry packets.

Innovation Solution

A communication apparatus and method that control whether to notify a second communication target apparatus of reconnection based on the communication protocol used in the second wireless connection, when reconnecting with a first communication target apparatus while maintaining parallel connections through an external apparatus and direct connections without going through the external apparatus.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the communication apparatus sends commands to the communication target apparatus in both modes simultaneously, then the communication functionality is complete, but redundant inquiry packets are received increasing communication overhead

Engineering Contradiction:
Improvecommunication functionalityVSAvoidinquiry packets
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent dynamically adjusts the service announcement behavior based on the operational state of different communication modes. When infrastructure mode connection is restored, the system automatically suppresses service name announcements in P2P mode, adapting the communication behavior to current connection conditions to eliminate redundant packets while maintaining complete communication functionality

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements feedback control by monitoring the connection state of infrastructure mode and using this information to control service announcement behavior in P2P mode. The system receives feedback about connection status and adjusts its packet transmission accordingly, suppressing announcements when infrastructure mode is active to reduce redundant inquiry packets

Inventive Principle:
Principle #23Feedback

2Adaptability or versatility

If service name announcement is performed in both modes simultaneously, then service discovery is comprehensive, but conflicts of service names occur

Engineering Contradiction:
Improveservice discoveryVSAvoidservice name conflicts
Core Design Contradiction:
Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent applies preliminary anti-action by proactively suppressing service name announcements in P2P mode when infrastructure mode connection is detected. This preventive measure stops service name conflicts from occurring in the first place, rather than resolving them after they arise, thereby maintaining comprehensive service discovery capability while eliminating conflict generation

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The system dynamically controls service announcement behavior based on the operational state of communication modes. Service names are announced in P2P mode only when infrastructure mode is not connected, creating a dynamic suppression mechanism that prevents service name conflicts while preserving complete service discovery functionality across both modes

Inventive Principle:
Principle #15Dynamics

3Reliability

If reconnection notification is sent to the second communication target apparatus, then the second connection is maintained, but communication processing becomes inefficient

Engineering Contradiction:
Improveconnection stabilityVSAvoidcommunication processing efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent dynamically determines whether to send reconnection notifications based on the communication protocol being used in P2P mode. When WSD protocol is detected, the system suppresses reconnection notifications to the P2P target apparatus, avoiding redundant processing while maintaining connection stability. This dynamic control improves communication processing efficiency by eliminating unnecessary notification actions

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies different reconnection notification strategies to different communication modes and protocols. Specifically, when WSD protocol is used in P2P mode, reconnection notifications are suppressed, while other protocols may continue normal notification behavior. This localized quality adjustment optimizes communication processing efficiency without compromising overall connection stability

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS10271368B2Communication apparatus having parallel wireless connection, communication method, and non-transitory computer-readable storage medium
Publication Date: 2019.04.23 CANON KK
  • US10271368B2 patent drawing
  • US10271368B2 patent drawing
  • US10271368B2 patent drawing

AI summary

A communication apparatus establishes, in parallel, a first wireless connection for connecting to a first target apparatus via an external apparatus and second wireless connection for directly connecting to a second target apparatus without the external apparatus. The communication apparatus includes a processor executing instructions to use a first communication protocol needing an anti-conflict measure or a second communication protocol not needing the anti-conflict measure. In a case where a first communication protocol is used, after the first wireless connection has been disconnected during the first wireless connection and the second wireless connection being maintained in parallel, information for stopping the communication is sent to the second target apparatus, and then reconnection processing with the first target apparatus is performed and the second target apparatus is notified of information related to reconnection. In a case where a second communication protocol is used, after the first wireless connection has been disconnected during the first wireless connection and the second wireless connection being maintained in parallel, reconnection processing is performed with the first target apparatus without notifying the second target apparatus of information related to reconnection.