PCP Selection Using Channel Width Sets in 802.11ad WLANs
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Solution Overview
Problem
The existing method for selecting a Personal Basic Service Set (PBSS) Control Point (PCP) in millimeter wave communications, as per the IEEE 802.11ad standard, does not ensure that the selected PCP can support multiple types of channel bandwidths, leading to poor reliability in Wireless Local Area Networks (WLANs).
Innovation Solution
A method for selecting a network controller PCP that involves acquiring supported channel width sets and generating a PCP factor for each station (STA) device based on its channel width set and directional multi-gigabit DMG capability information, selecting the STA with the largest PCP factor as the PCP, which considers the channel bandwidth support capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the PCP selection method in IEEE 802.11ad standard is used, then the selection process is simple, but the selected PCP may not support multiple types of channel bandwidth, leading to poor WLAN reliability
Solution Approach 1:
The patent changes the selection parameters from simple capability information to a comprehensive PCP factor that includes supported channel width sets. This ensures the selected PCP can support multiple channel bandwidth types (1.08 GHz, 2.16 GHz, 4.32 GHz, 8.64 GHz) while maintaining a systematic selection process.
Solution Approach 2:
The patent makes the PCP selection process universal by incorporating support for multiple channel bandwidth types into the selection criteria. The PCP factor evaluation ensures the selected controller can handle various channel configurations, making the solution applicable to different millimeter wave communication scenarios.
2Adaptability or versatility
If multiple types of channel bandwidth are supported in millimeter wave communication, then the network adaptability is improved, but the existing PCP selection method cannot ensure the selected PCP supports all bandwidth types
Solution Approach 1:
The patent modifies the selection parameters to explicitly include supported channel width sets in the PCP factor. This ensures that among the multiple channel bandwidth types available (1.08 GHz, 2.16 GHz, 4.32 GHz, 8.64 GHz), the selected PCP has the necessary adaptability while maintaining reliable selection through systematic evaluation.
Solution Approach 2:
The patent segments the PCP selection process into distinct evaluation components: acquiring supported channel width sets, acquiring DMG capability information elements, generating PCP factors for each STA, and selecting based on the largest PCP factor. This segmented approach ensures comprehensive evaluation of bandwidth support capability.
Data Source
AI summary
The present invention provides a method for selecting a network controller and a station device. Supported channel width sets of multiple station STA devices are acquired; a PCP factor of the each STA device is generated according to a supported channel width set and an acquired directional multi-gigabit DMG capability information element of the each STA device, where the PCP factor includes the supported channel width set; a STA device with a largest PCP factor is selected as a PCP. Using the method for selecting a PCP and the STA device provided in the present invention can improve reliability of a wireless local area network WLAN.