BSS Identification Using Non-Default Spatial Reuse Parameters
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Solution Overview
Problem
Wireless local area networks (WLANs) face challenges in efficiently managing bandwidth and response times due to multiple devices sharing resources, with limitations from communication protocols and hardware bandwidth, especially when operating with both new and legacy protocols.
Innovation Solution
The implementation of a radio architecture that includes non-default spatial reuse (SR) parameters for basic service set (BSS) identification, using specific SRG parameters and non-SRG parameters to optimize channel usage and power settings in overlapping BSS scenarios, allowing for efficient coexistence of HE and legacy devices in IEEE 802.11ax networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If default spatial reuse parameters are used for BSS identification, then compatibility with legacy devices is maintained, but bandwidth utilization and network throughput are limited
Solution Approach 1:
The patent segments BSS identification into two distinct types: SRG (Spatial Reuse Group) BSS identification for high-efficiency devices using non-default parameters, and non-SRG BSS identification for legacy devices using default parameters. This segmentation allows HE devices to utilize advanced spatial reuse techniques while legacy devices continue operating with traditional parameters, resolving the contradiction between improved throughput and device compatibility
Solution Approach 2:
The patent applies different spatial reuse parameters locally based on device type and BSS category. HE devices within an SRG use customized parameters (such as adjusted clear channel assessment thresholds and power levels) optimized for their capabilities, while legacy devices use standard parameters. This local differentiation enables high productivity for HE devices without compromising legacy device compatibility
2Productivity
If non-default spatial reuse parameters are implemented, then bandwidth utilization improves, but device complexity and protocol requirements increase
Solution Approach 1:
The patent divides the network into SRG and non-SRG segments, where only HE devices in the SRG implement the complex non-default parameters. Legacy devices and HE devices in non-SRG areas use simple default parameters. This segmentation confines protocol complexity to specific device groups, improving bandwidth utilization for capable devices while maintaining simplicity for others
Solution Approach 2:
The patent creates a universal BSS identification framework that works for both legacy and HE devices. The same basic identification mechanism serves dual purposes: simple BSS identification for legacy devices and enhanced spatial reuse identification for HE devices. This multi-functionality reduces overall system complexity while enabling advanced features
3Productivity
If spatial reuse optimization is applied to all BSS, then network efficiency increases, but interference management and parameter coordination become more difficult
Solution Approach 1:
The patent segments the network into SRG and non-SRG portions, applying spatial reuse optimization only within SRG boundaries. This segmentation isolates parameter coordination requirements to specific groups, allowing efficient optimization within SRGs without creating complex coordination challenges across the entire network. Non-SRG areas maintain simple default parameter operations
Solution Approach 2:
The patent introduces BSS identification as an intermediary mechanism that mediates between different spatial reuse parameter sets. The identification system acts as a mediator that directs traffic and coordination requirements appropriately, simplifying the management of diverse parameters by providing a unified classification framework that handles both simple and complex parameter scenarios
Data Source
AI summary
Apparatuses, methods, computer readable media for basic service set (BSS) identifications for using non-default spatial reuse parameters. An apparatus including memory configured to store one or more bitmaps including at least one of a spatial reuse (SR) group (SRG) basic service set (BSS) color bitmap and a SRG Partial BSS identification (ID)(BSSID) Bitmap, and processing circuitry configured to: decode an inter-BSS physical layer convergence procedure (PLCP) protocol data unit (PPDU). The processing circuitry may be further configured to determine the inter-BSS PPDU to be a SRG PPDU if: the inter-BSS PPDU comprises a BSS color field and a bit of the SRG BSS color bitmap corresponding to a value of the BSS color field is set; or a BSSID field is identified for the inter-BSS PPDU, and a bit of the SRG Partial BSSID bitmap corresponding to a value of a partial BSSID of the BSSID is set.