Communication Apparatus Handover Protocol Verification
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Solution Overview
Problem
Conventional communication systems perform unnecessary handover processing when attempting to switch from short-range wireless communication methods like NFC to wireless LAN, as they do not adequately determine if the target device can support the desired communication service before switching.
Innovation Solution
A communication apparatus that includes a first communication unit for NFC and a second unit for wireless LAN, transmitting a message with service protocol information to determine if the target device can execute the desired service, thereby preventing unnecessary handovers by ensuring only necessary protocol changes occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If handover processing is performed from NFC to wireless LAN without service capability verification, then communication connection can be established, but unnecessary handover processing occurs when the target device cannot support the desired service
Solution Approach 1:
The patent applies preliminary action by transmitting service capability information (protocol type, supported services) from the first communication apparatus to the second apparatus before performing handover processing. This allows the initiating apparatus to verify service compatibility in advance, preventing unnecessary handover operations and reducing wasted time when the target device cannot support the desired communication service.
2Loss of time
If service capability verification is performed before handover, then unnecessary handover processing is prevented, but additional communication overhead is introduced
Solution Approach 1:
The patent performs service capability verification through message exchange during the initial connection phase, before handover decision-making. By determining protocol compatibility and service support in advance, the system avoids complex runtime verification during handover, thereby reducing overall processing time while maintaining manageable protocol complexity.
3Ease of operation
If handover is performed without verifying service support, then connection establishment is simplified, but communication efficiency decreases due to failed service execution
Solution Approach 1:
The patent maintains ease of operation by automating the service capability verification process through pre-exchanged information. The system determines whether handover should proceed based on previously received protocol and service capability data, ensuring communication efficiency without requiring complex manual verification steps from users.
Data Source
AI summary
A communication apparatus includes a first communication unit that performs a wireless communication with a second communication apparatus using a first communication method, and a second communication unit that performs a wireless communication with the second communication apparatus using a second communication method different from the first communication method. The first communication unit transmits a message including information indicating a communication protocol to be used in executing a service via the wireless communication by the second communication unit.