Receiver Power Control via Group ID and MCS
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Solution Overview
Problem
The high cost of installing new Ethernet or fiber optic cables for 'last mile' communication infrastructure and the need for efficient data transmission technologies that can handle large data rates while minimizing power consumption.
Innovation Solution
A method of controlling receivers in communication systems by using group identifiers and modulation and coding schemes in physical layer headers to determine whether to fully demodulate and decode frames, allowing for the disabling of demodulator and decoder circuitry when unnecessary, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver continuously demodulates and decodes all received frames, then data transmission reliability is improved, but power consumption increases
Solution Approach 1:
The receiver performs partial demodulation and decoding operations based on frame type indicators. For non-data frames (e.g., management frames), the receiver performs only partial demodulation to check the frame type indicator, then stops processing. This partial action approach maintains reliability by ensuring data frames are fully processed while avoiding unnecessary processing of non-data frames, thereby reducing power consumption.
Solution Approach 2:
The frame processing is segmented into multiple stages: initial demodulation to extract frame type indicator, conditional decision based on the indicator, and selective full demodulation/decoding only for data frames. This segmentation allows the receiver to break the continuous processing chain and insert decision points that prevent unnecessary power consumption while maintaining data transmission reliability.
2Measurement precision
If the receiver processes all frames fully, then data transmission accuracy is improved, but processing time increases
Solution Approach 1:
The receiver performs partial demodulation for all frames to extract the frame type indicator, then performs full demodulation and decoding only for data frames. This partial action approach ensures that data frames receive complete processing for accuracy while non-data frames receive minimal processing, thereby reducing overall processing time without compromising data transmission accuracy.
Solution Approach 2:
The frame type indicator is extracted in advance during initial demodulation, before committing to full demodulation and decoding. This preliminary action allows the receiver to make an early decision about whether full processing is necessary, preventing wasted processing time on non-data frames while ensuring data frames receive complete processing for accuracy.
3Adaptability or versatility
If the receiver remains fully active to handle all frame types, then communication versatility is improved, but power dissipation increases
Solution Approach 1:
The receiver maintains full capability to handle all frame types by implementing conditional processing logic that activates full demodulation and decoding only when needed (for data frames). For non-data frames, the receiver performs minimal processing to identify the frame type and then stops. This approach preserves communication versatility while significantly reducing power dissipation by avoiding continuous full-operation mode.
Solution Approach 2:
The receiver dynamically adjusts its processing level based on the frame type indicator. The processing intensity transitions from minimal (for non-data frames) to full (for data frames), allowing the system to adapt its power consumption to the actual communication needs. This dynamic behavior maintains versatility while optimizing energy efficiency.
Data Source
AI summary
Disclosed is a method of controlling a receiver. A group identifier or modulation and coding scheme is sent in a physical layer header. This group identifier or modulation and coding scheme, or both, determine whether the corresponding physical layer frame should be fully demodulated and decoded. If it is not necessary to fully demodulate and decode the physical layer frame, the receiver may disable its demodulator, decoder, or both. This results in a power savings. A hub device sends the group identifier or modulation and coding scheme in the physical layer header. This allows receivers that are not addressed by the group identifier, or modulation and coding scheme, to disable at least a portion of their circuitry. Disabling at least a portion of circuitry saves power consumption and dissipation. The hub device may also send control messages to tell the receiver which group identifiers, or modulation and coding schemes, they should respond to.