Terminal Apparatus Anchor Message for Multi-Network Switching
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Solution Overview
Problem
Existing wireless communication systems require terminal apparatuses to register position information with each network to switch between wireless communication schemes, which is inefficient and limits flexibility.
Innovation Solution
A terminal apparatus and communication method that enable data transmission and reception using multiple wireless communication schemes without registering position information with each network, by transmitting link information and making transmission requests through one network, and receiving data through selected networks based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal apparatus registers position information with each network to switch between wireless communication schemes, then network switching capability is improved, but device complexity and operational overhead increase
Solution Approach 1:
The patent applies universality by using a single anchor message mechanism that serves multiple networks simultaneously. Instead of implementing separate position registration procedures for each wireless communication scheme (LTE, WiMAX, WLAN), the terminal apparatus uses one unified anchor message to indicate its presence and capability across all networks, eliminating the need for scheme-specific registration logic.
Solution Approach 2:
The patent merges multiple position registration functions into a single anchor message transmission. The anchor message combines position information, terminal capability indicators, and network selection preferences into one unified signal that can be processed by multiple networks simultaneously, reducing the number of separate registration operations required.
2Productivity
If the terminal apparatus transmits anchor messages to multiple networks simultaneously, then network selection efficiency is improved, but use of energy increases
Solution Approach 1:
The patent applies partial action by having the terminal apparatus transmit the anchor message to a subset of networks rather than all available networks simultaneously. The terminal can selectively target networks based on predefined criteria such as signal strength, service requirements, or user preferences, thereby reducing total energy expenditure while still achieving effective network selection.
Solution Approach 2:
The patent uses preliminary action by pre-configuring network selection criteria and filtering mechanisms before anchor message transmission. The terminal apparatus prepares a prioritized list of target networks based on historical performance, signal quality, and service requirements, allowing it to transmit anchor messages only to the most promising networks rather than exhaustively querying all available networks.
3Adaptability or versatility
If the terminal apparatus supports multiple wireless communication schemes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent introduces an intermediary layer in the form of the anchor message mechanism that mediates between multiple wireless communication schemes and the network infrastructure. This intermediary abstraction allows the terminal to interact with diverse networks (LTE, WiMAX, WLAN) through a unified interface, hiding the complexity of scheme-specific protocols from the application layer and simplifying multi-scheme support.
Solution Approach 2:
The patent applies universality by designing the anchor message format and processing logic to be scheme-agnostic. The same anchor message structure and interpretation rules work across different wireless communication schemes, allowing the terminal apparatus to support multiple schemes without implementing separate handling logic for each protocol.
Data Source
AI summary
A terminal apparatus includes a receiver and reception signal control circuitry. The receiver, in operation, receives a first downlink data signal transmitted from a first communication station and receives a second downlink data signal transmitted from a first communication station, the first downlink data signal and the second downlink data signal being received over a first downlink channel and a second downlink channel that are at least partially overlapped in time and frequency domain. The reception signal control circuitry, in operation, demodulates the received first downlink data signal and a second downlink data signal.