Short SSW Frame Configuration for WLAN Sector Sweep
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Solution Overview
Problem
Current wireless communication systems face challenges in configuring feedback and acknowledgment frames during a Short sector sweep (SSW) in Sector Level Sweep (SLS) operations, particularly in ensuring backward compatibility with legacy systems and efficiently transmitting information related to sector sweeps.
Innovation Solution
A method and device for transmitting and receiving packets in a wireless LAN system that utilize a Short SSW frame, including fields such as CDOWN, RF chain ID, sector select, and DMG antenna select, to configure feedback and acknowledgment frames, ensuring compatibility and efficient information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a Short SSW frame is used in Sector Level Sweep operations, then data transmission efficiency is improved and frame configuration is simplified, but compatibility with legacy systems may be compromised
Solution Approach 1:
The patent modifies specific parameters within the SSW frame structure, such as the CDOWN field format and sector identification fields, to enable short SSW operation while maintaining compatibility with legacy systems that expect standard frame formats
Solution Approach 2:
The SSW frame is designed to serve multiple functions: it supports both short and standard operational modes, enables sector identification, carries feedback information, and maintains compatibility with legacy systems through unified frame structure design
2Reliability
If feedback and acknowledgment frames are configured during Short SSW operations, then communication reliability is improved, but frame complexity increases
Solution Approach 1:
The patent combines feedback information and acknowledgment signals into the SSW frame structure itself, eliminating the need for separate feedback and acknowledgment frames, thereby reducing overall frame complexity while maintaining communication reliability
Solution Approach 2:
The SSW frame is designed to simultaneously carry sector identification information, feedback data, and acknowledgment signals, making it a multi-functional frame that reduces the total number of frames needed while improving communication reliability
3Measurement precision
If sector sweep information is included in transmitted packets, then measurement precision is improved, but information transmission overhead increases
Solution Approach 1:
The patent extracts only the essential sector identification information (CDOWN field, sector select fields) from the complete sector sweep data, transmitting only the minimum necessary information to achieve accurate sector identification while reducing overhead
Solution Approach 2:
The patent optimizes the format and length of sector identification fields, such as using compact CDOWN field representations and selective inclusion of sector select information, to maintain measurement precision while minimizing information overhead
Data Source
AI summary
According to one embodiment of the present specification, provided is a method by which a station (STA) transmits, through a plurality of channels, signals in a wireless LAN (WLAN) system. The method for transmitting signals comprises the steps of: allowing an STA to transmit a packet for an ISS; allowing the STA to receive a packet for an RSS; allowing the STA to transmit a packet for a SSW feedback; and allowing the STA to receive a packet for an SSW ACK, wherein the packet for the SSW feedback and the packet for the SSW ACK can include a field for indicating whether the packet for the ISS and the packet for the RSS are transmitted into the short SSW packet.