PLCP Header Alignment With Symbol Blocks to Cut Wireless Overhead
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Solution Overview
Problem
Wireless networking systems face inefficiencies in data transmission due to misalignment of data elements with symbol blocks, leading to unnecessary overhead and pad bits in wireless networks, particularly in body area networks.
Innovation Solution
The generation of physical layer convergence protocol (PLCP) headers that are aligned with symbol blocks, incorporating a processor to process and encode physical layer headers, check values, and error correction codes, ensuring the aggregate number of information bits is an integer multiple of the information bits per symbol, thereby optimizing transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data elements are not aligned with symbol blocks, then transmission flexibility is maintained, but transmission efficiency deteriorates due to unnecessary overhead and pad bits
Solution Approach 1:
The invention changes the parameter of data element alignment by adjusting the PLCP header structure to ensure that the aggregate number of information bits (physical layer header + check value + error correction code) is an integer multiple of the information bits per symbol. This alignment parameter change eliminates the need for pad bits and reduces overhead, thereby improving transmission efficiency without sacrificing flexibility
Solution Approach 2:
The invention segments the PLCP header into distinct components (physical layer header, check value, error correction code) and processes each segment separately. By calculating the total information bits and comparing it with the symbol block size, the system can determine whether alignment is achieved and add necessary padding only when required, thus minimizing overhead while maintaining alignment benefits
2Device complexity
If PLCP header structure is simplified, then processing complexity is reduced, but error correction capability deteriorates
Solution Approach 1:
The invention applies preliminary action by pre-calculating the aggregate number of information bits in the PLCP header components and determining the alignment status before transmission. The system computes whether (physical layer header bits + check value bits + error correction code bits) is an integer multiple of information bits per symbol in advance, allowing for proactive adjustment of header structure or addition of minimal padding to achieve alignment, thereby maintaining both simplicity and reliability
Solution Approach 2:
The invention implements feedback mechanisms where the system continuously monitors the alignment status of PLCP headers and adjusts the header structure or padding accordingly. The processor evaluates the aggregate bit count against symbol block requirements and provides feedback to modify the header composition, ensuring optimal balance between processing complexity and error correction capability through iterative refinement
Data Source
AI summary
Apparatus and method for processing a physical layer protocol convergence (PLCP) header. In one embodiment, a wireless device includes a PLCP header processor. The PLCP header processor is configured to: process a physical layer header, process a check value based on the physical layer header, and process an error correction code based on the physical layer header and the check value. A concatenation of the physical layer header, check value, and error correction code the PLCP header processor is configured to process consists of a number of information bits that is an integer multiple of a number of information bits per symbol used to encode the PLCP header.