Physical Layer Circuit Abnormal Packet Detection
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Solution Overview
Problem
Existing receiver devices require excessive processing time to determine whether a received packet is abnormal, as they typically involve multiple layers for packet drop decisions, which can be inefficient when packets are distorted by interference.
Innovation Solution
The receiver device employs a physical layer circuit to demodulate packets and determine if they are abnormal based on indicators like RSSI, allowing for immediate packet drop without involving higher layers, thus saving processing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the MAC layer circuit determines whether to drop the packet, then the packet processing follows the traditional multi-layer protocol structure, but the processing time is excessive
Solution Approach 1:
The patent segments the packet processing function by separating the abnormal packet detection capability from the MAC layer and placing it in the physical layer circuit. This segmentation allows the physical layer to independently identify and drop abnormal packets without involving the MAC layer, thereby reducing processing time while maintaining the overall protocol structure integrity.
Solution Approach 2:
The patent implements preliminary action by enabling the physical layer circuit to perform abnormal packet identification and dropping before the packet reaches the MAC layer. By detecting packet abnormalities at the earliest stage (physical layer) and dropping them immediately, the system prevents unnecessary transmission of abnormal packets through higher layers, thus reducing overall processing time and network bandwidth waste.
2Productivity
If the physical layer circuit drops abnormal packets immediately, then the processing time is reduced, but the packet drop decision capability must be added to the physical layer circuit
Solution Approach 1:
The patent applies universality by designing the physical layer circuit to perform both its traditional signal processing functions and the additional function of abnormal packet identification and dropping. By integrating multiple functions into the physical layer circuit, the system achieves improved processing efficiency without requiring separate dedicated hardware for packet inspection, thus balancing productivity improvement with device complexity.
3Measurement precision
If multiple receiver devices compare indicator values to determine packet abnormality, then the detection accuracy is improved, but the coordination between devices increases complexity
Solution Approach 1:
The patent merges the detection capabilities of multiple receiver devices by having them independently measure the same packet indicator (RSSI) and compare their measurements. This merging approach improves detection accuracy through cross-validation while maintaining relatively simple individual device structures. The coordination complexity is managed by using a straightforward comparison mechanism rather than complex centralized control.
Data Source
AI summary
A receiver device is configured to receive a packet. The receiver device includes a physical layer circuit. The physical layer circuit is configured to demodulate the packet to acquire at least one indicator associated with the packet, and determine whether the packet is an abnormal packet or not according to the at least one indicator. If the packet is the abnormal packet, the physical layer circuit drops the packet.