WLAN Address Field Signaling Compression
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Solution Overview
Problem
In wireless local area networks (WLANs), increasing signaling information without expanding the number of symbols in the signal field leads to deteriorated transmission efficiency, as it necessitates longer frames.
Innovation Solution
The method involves incorporating signaling information into the address field of MAC frames, using compressed addresses and signaling indications within the address field to transmit additional information without increasing the frame length, allowing for efficient transmission of BSS information and other signaling data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the number of symbols in the signal field is increased to transmit more signaling information, then the signaling information capacity is improved, but the minimum frame length is increased which deteriorates transmission efficiency
Solution Approach 1:
The address field is designed to serve dual purposes: it maintains its traditional function of identifying destination addresses while simultaneously carrying additional signaling information. This multi-functionality allows the same field to fulfill multiple roles without requiring additional frame length, thereby resolving the contradiction between information capacity and transmission efficiency.
Solution Approach 2:
The patent utilizes predefined values and bit patterns within the address field to encode signaling information. By changing the parameter values (specific bit combinations) in the address field, the system can convey additional signaling data without altering the fundamental structure or length of the frame, thus maintaining transmission efficiency while increasing information capacity.
2Productivity
If additional signaling information is transmitted without increasing the number of symbols, then transmission efficiency is improved, but the complexity of encoding and decoding is increased
Solution Approach 1:
The address field acts as an intermediary that carries both address information and signaling information. By using this existing field as a mediator, the patent avoids the need for separate dedicated signaling fields, thereby reducing overall system complexity while still achieving efficient transmission of additional signaling data.
Solution Approach 2:
The patent merges address information and signaling information into a single address field structure. This consolidation eliminates the need for separate fields for each type of information, reducing the overall frame structure complexity while enabling efficient transmission of both address and signaling data within the same field boundaries.
Data Source
AI summary
A signaling method is provided by a device in a WLAN. The device includes signaling information in an address field, generates a MAC frame including the address field, and transmits a PHY frame including a data field into which the MAC frame is inserted.