Cell ID Insertion in Wireless Frame Header
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Solution Overview
Problem
In wireless networks, communication interference between neighboring cells using the same channel leads to performance issues, as devices lock onto unnecessary frames, causing throughput problems in transmission and reception.
Innovation Solution
Incorporating a unique cell ID in the frame header allows devices to determine whether a frame is destined for them before receiving the entire frame, enabling early release and reducing interference by distinguishing between intended and interfering frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If devices lock onto frames using conventional methods, then they can receive complete frame data, but they waste time and resources processing interfering frames from neighboring cells
Solution Approach 1:
The patent segments the frame reception process into two stages: first checking the cell ID in the header portion, then deciding whether to continue receiving the entire frame. This segmentation allows early termination of unnecessary frame reception when cell IDs don't match, improving throughput by preventing devices from locking onto and processing interfering frames from neighboring cells.
Solution Approach 2:
The patent performs preliminary action by checking the cell ID in the frame header before committing to receive the entire frame. This preliminary check enables devices to identify and ignore interfering frames early in the reception process, reducing the time and resources wasted on processing frames from other cells while maintaining complete frame reception when necessary.
2Reliability
If devices receive all frames on their channel, then they ensure no intended frames are missed, but they experience interference from neighboring cell communications
Solution Approach 1:
The patent segments frame processing into header analysis and body reception phases. By extracting and comparing cell IDs from the header portion first, the system can reliably identify frames intended for its cell versus interfering frames from neighboring cells, maintaining reception reliability for intended frames while filtering out harmful interference early in the process.
Solution Approach 2:
The patent introduces the cell ID as an intermediary element in the frame header that mediates between the physical layer frame structure and the MAC layer processing. This intermediary cell ID enables devices to distinguish between intended and interfering frames without missing legitimate communications, effectively reducing neighboring cell interference while maintaining reception reliability.
3Speed
If the cell ID is included in the frame header, then devices can quickly identify intended frames, but the frame structure becomes more complex
Solution Approach 1:
The patent segments the frame structure into distinct portions with the cell ID placed in the header section. This segmentation allows rapid frame identification through simple cell ID comparison in the header without requiring complex processing of the entire frame, achieving fast identification speed while maintaining relatively simple frame structure.
Solution Approach 2:
The patent applies local quality by placing the cell ID specifically in the frame header portion rather than distributing identification information throughout the entire frame. This localized placement enables quick frame identification through header-only processing, improving speed while minimizing the impact on overall frame structure complexity.
Data Source
AI summary
A wireless access point includes a wireless interface to send or receive frames in a cell in a wireless network. A storage device stores a cell ID that uniquely identifies the wireless access point. Processing circuitry inserts the cell ID in a physical layer header of a frame, and sends the frame to a client device in the cell via the wireless interface.