Communication Terminal Network Selection for Content Size
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Solution Overview
Problem
Existing communication systems, such as those described in Japanese Patent Applications Laid-Open No. 2004-336256 and No. 2006-155506, fail to automatically select a suitable network based on the type and size of contents for data communication, imposing a burden on users by requiring manual changes and inefficiencies in data transfer.
Innovation Solution
A communication terminal and method that transmit a content request to an external server, extract content information from the response, and automatically select and connect to a network suitable for the content type and size, allowing seamless switching between different network types, such as IMT-2000 and wireless LAN, to optimize data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data communication is performed via an IMT-2000 network, then mobile telephone network connectivity is maintained, but the upper limit of file size is restricted and communication speed is slow for large capacity files
Solution Approach 1:
The system dynamically changes the network parameter (bearer type) based on the file size parameter. When a large capacity file is detected, the system switches from IMT-2000 network to wireless LAN, thereby changing the communication parameters to achieve higher data transfer speeds while maintaining mobile network connectivity for smaller files.
Solution Approach 2:
The communication system transitions from a static network selection approach to a dynamic one where the network type is automatically adjusted based on real-time conditions such as file size. The system can switch between IMT-2000 and wireless LAN networks dynamically, allowing optimal performance for different data transmission scenarios.
2Adaptability or versatility
If a user manually changes the bearer based on content size, then appropriate network selection is achieved, but user burden increases due to required manual intervention
Solution Approach 1:
The system performs automatic network selection and bearer change based on the file size information contained in the URL. The terminal device itself determines the appropriate network type and executes the switch without requiring user input, thereby maintaining accurate network selection while eliminating manual user intervention.
Solution Approach 2:
The system uses feedback from the URL information (which contains file size data) to automatically determine the appropriate network type. The terminal device extracts file size information from the URL, compares it with threshold values, and automatically selects the suitable bearer, creating a closed-loop control system that adapts to different content sizes.
3Reliability
If the system automatically changes bearer based on radio field intensity, then communication reliability is maintained, but the bearer cannot be changed depending on content type or size
Solution Approach 1:
The system segments the network selection criteria into two independent dimensions: radio field intensity (for connection stability) and content characteristics such as file size (for optimal performance). By separating these selection factors, the system can simultaneously maintain communication reliability through signal strength monitoring while adapting network type based on content requirements.
Solution Approach 2:
The terminal device is designed with multi-functionality to handle both types of network selection criteria. It can evaluate radio field intensity for connection stability and simultaneously analyze content characteristics from URLs to determine appropriate network types, making the system universally adaptable to both reliability and performance requirements.
Data Source
AI summary
Provided is a communication terminal which can be connected to a plurality of types of network and switching to a network appropriate for a content to be handled can be performed without forcing a user to perform the switching to a connection destination. It is also possible to provide a communication method using the communication terminal, a program, and a recording medium. The communication terminal transmits a content transmission request to an external server and receives a response to the content transmission request from the external server. The communication terminal extracts content information from the received response, selects at least one network in accordance with the extracted content information, and makes a connection to the selected network.