Relay Node Phase Bit Processing for Power Reduction
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Solution Overview
Problem
In mobile communication systems, mobile stations with relay functions consume significant power for signal relay processing, leading to reduced battery life and potential communication disruptions, limiting system capacity.
Innovation Solution
A radio relay apparatus and method that allocate data to amplitude and phase bits within symbols, allowing the relay node to demodulate and modulate only phase bits for relay, reducing power consumption and extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the mobile station performs relay processing for other mobile stations, then system capacity is increased, but power consumption increases causing battery charge capacity to decrease
Solution Approach 1:
The patent segments the bit data into two distinct parts: first bit data (amplitude bits) and second bit data (phase bits). The relay station selectively processes only the second bit data for relay transmission, while the first bit data is processed by the destination station. This segmentation enables the relay station to reduce its processing workload and power consumption while still maintaining system capacity improvement.
Solution Approach 2:
The patent extracts only the necessary portion (second bit data/phase bits) for relay processing, leaving the first bit data (amplitude bits) for direct processing by the destination station. This extraction approach allows the relay station to perform minimal necessary processing, reducing power consumption while still enabling communication for mobile stations that cannot directly communicate with the base station.
2Reliability
If the mobile station performs relay processing, then communication for other mobile stations is enabled, but battery life is reduced
Solution Approach 1:
By segmenting bit data into amplitude bits and phase bits, the relay station can maintain communication reliability for mobile stations in poor coverage areas while significantly reducing power consumption. The relay station only processes phase bits, extending battery life while ensuring continuous communication availability.
Solution Approach 2:
The relay station performs partial processing (only phase bits) rather than complete processing (both amplitude and phase bits). This partial action is sufficient to enable communication for mobile stations in poor coverage areas while minimizing power consumption to extend battery life.
Data Source
AI summary
Provided is a wireless relaying device, wherein system capacity can be increased by reducing power consumption required for relay processing at mobile stations equipped with relaying function. This is a relaying node (200) that relays communication between an originating node and a destination node, and that is provided with: a demodulation unit (203) that demodulates a signal transmitted from the originating node; a decoding unit (205) that obtains a signal destined for the relaying node (200), by decoding an amplitude bit from among a plurality of bits that comprise each of the symbols of the signal demodulated by the demodulation unit (203); and a modulation unit (208) that generates a relay signal destined for the destination node, by modulating a phase bit from among the plurality of bits that comprise each of the symbols of the signal demodulated by the demodulation unit (203).