Relay Station Data Transfer via Reception Feedback
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Solution Overview
Problem
In multicast communication, dynamic obstacles can disrupt communication links, making it difficult to accurately transmit data to stations that cannot receive directly from the transmission station, leading to redundant data transmission and increased power consumption.
Innovation Solution
A communication system with a reception unit, response unit, determination unit, and transfer unit that identifies stations not receiving data and decides, based on priority, whether to transfer received data from a relay station to those stations, thereby reducing redundant transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted to all communication stations in multicast communication, then data can be delivered to multiple reception stations, but redundant data transmission occurs when stations have already received the data, increasing power consumption and bandwidth waste
Solution Approach 1:
The patent implements a feedback mechanism where reception stations send reception response signals (ACK/NACK) to the transmission station and relay stations. This feedback allows the system to identify which stations have successfully received data and which need retransmission, enabling selective data transfer instead of blanket multicasting to all stations, thereby reducing redundant transmissions and power consumption
Solution Approach 2:
Instead of transmitting data to all communication stations (excessive action), the patent transmits data only to stations that have not successfully received it (partial action). The transmission station and relay stations use reception responses to determine the minimum necessary set of stations requiring data transfer, avoiding unnecessary transmissions to stations that already have the data
2Reliability
If relay stations transfer data to ensure delivery to all stations, then data communication reliability improves, but redundant data transmission occurs increasing bandwidth waste and interference
Solution Approach 1:
The patent performs preliminary assessment of data reception status before initiating relay transfers. Reception stations send ACK/NACK responses in advance, allowing the transmission station and relay stations to identify which stations need data before actual transfer occurs. This preliminary action prevents redundant relay transfers and optimizes bandwidth utilization
Solution Approach 2:
The patent introduces reception response signals (ACK/NACK) as intermediaries that mediate between data transmission and relay transfer decisions. These response signals provide critical information about reception status, enabling intelligent routing decisions that avoid redundant transfers while ensuring reliable delivery to stations that need the data
3Reliability
If the system uses mesh topology with multiple relay stations, then data transmission reliability improves when communication links change, but stations repeatedly receive the same data multiple times increasing power consumption
Solution Approach 1:
The patent uses reception response feedback (ACK/NACK) to track which stations have successfully received data from which relay stations. This feedback mechanism prevents stations from repeatedly receiving the same data by informing relay stations about existing reception status, thereby reducing redundant receptions and the time stations spend processing duplicate data
Data Source
AI summary
A communication station receives data from a transmission station, transmits a reception response representing the data reception condition, and determines, based on reception responses from other communication stations, whether communication station which has not normally received the data from the transmission station exists among the other communications. Upon normally receiving the data from the transmission station, and determining that the communication station which has not normally received the data from the transmission station exists, the communication station transfers, to the communication station which has not normally received the data, the data received from the transmission station. upon transferring, it is decided, based on a predetermined priority order, whether or not to perform the transfer to the communication station which has not normally received the data.