Relay Apparatus Using Control Signal Reservation for Simultaneous Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing relay apparatuses for bidirectional radio communication networks at the same frequency face challenges in reducing apparatus size and minimizing time waste, as they require temporal switching between transmission and reception, and struggle with interference due to close antenna placement and mobile terminal apparatuses.
Innovation Solution
A relay apparatus and method that uses a relay control signal to reserve a transmission path for information signals, allowing for simultaneous transmission and reception without temporal switching, by transmitting the relay control signal prior to the information signal and utilizing a reservation table to manage relay operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the received signal is transmitted after being stored, then spectrum utilization efficiency is improved, but time waste occurs due to temporal switching between transmission and reception
Solution Approach 1:
The relay apparatus performs preliminary actions by storing control signals and determining relay timing in advance before the actual information signal transmission. This allows the apparatus to switch to transmission mode proactively, eliminating idle time and enabling continuous operation without temporal switching delays.
2Object-affected harmful factors
If the transmission antenna and reception antenna are disposed by keeping a sufficient distance from each other, then interference is reduced, but the size of the apparatus increases
Solution Approach 1:
The invention extracts and removes the harmful echo signal from the reception path using signal processing techniques (echo canceller). By identifying and subtracting the transmitted signal component from the received signal, the system eliminates interference without requiring physical separation between antennas, thus maintaining a compact apparatus size.
3Reliability
If an echo canceller is introduced according to broadcasting technology, then relay with less degradation of signal quality is achieved, but it is not possible to realize relay with waste of time reduced using a small relay apparatus in bidirectional communication
Solution Approach 1:
The relay apparatus dynamically adjusts its operation mode based on real-time conditions. It determines relay timing by analyzing control signals and adapts its transmission/reception switching accordingly. This dynamic approach allows the system to achieve both signal quality maintenance through echo cancellation and time efficiency through proactive mode switching, unlike static broadcasting systems.
Data Source
AI summary
A relay apparatus, terminal apparatus and relay method for relaying signals with a reduced scale of the apparatus, without temporally switching between transmission and reception and with reduced waste of time when relay is performed at the same frequency on a radio communication network on which bidirectional communication is performed. A radio reception section 202 outputs information signals to a switch 208, outputs relay control signals to a demodulation section 204 after subjecting predetermined radio reception processing. The demodulation section 204 demodulates a relay control signal. A relay control signal processing section 206 decides the possibility of relay of information signals and inquires, when the relay is possible, whether the terminal apparatus on the receiving side can receive this information signal or not. Furthermore, the relay control signal processing section 206 connects a switch 208 during the stored relay time. The switch 208 is connected only the information signals to be relayed are received under the control of a relay control section 2063.