NGV Ranging Protocol Skip Association for Fast Distance Measurement
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Solution Overview
Problem
Current 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, and the need for fast ranging in Next Generation Vehicle-to-Everything (NGV) protocols.
Innovation Solution
The proposed solution involves a radio architecture that integrates WLAN and Bluetooth functionality, using a radio architecture with front-end module, radio IC, and baseband processing circuitry to enable efficient coexistence and switching between WLAN and Bluetooth, along with advanced ranging protocols that skip association and negotiation processes, utilizing broadcast messages for device discovery and ranging parameter acquisition, and bi-directional reporting for accurate distance measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional WLAN protocols are used with multiple devices sharing resources, then device compatibility is improved, but bandwidth efficiency and response times deteriorate
Solution Approach 1:
The patent segments the WLAN protocol into legacy mode and NGV mode, allowing devices to operate in appropriate modes based on their capabilities. This segmentation enables NGV devices to use efficient protocols while legacy devices maintain compatibility, resolving the contradiction between adaptability and productivity.
Solution Approach 2:
The system dynamically selects between traditional WLAN protocols and NGV protocols based on device capabilities and network conditions. This dynamic adaptation allows the network to optimize bandwidth efficiency for NGV devices while maintaining compatibility with legacy devices, simultaneously improving both adaptability and productivity.
2Reliability
If association and negotiation processes are used for device discovery, then connection reliability is improved, but ranging speed deteriorates
Solution Approach 1:
The patent implements preliminary device discovery through broadcast messages that contain ranging parameters before formal association occurs. This preliminary action allows NGV devices to quickly identify each other and initiate ranging without completing full association and negotiation processes, thereby improving ranging speed while maintaining sufficient connection reliability through subsequent confirmation steps.
Solution Approach 2:
The system skips the traditional association and negotiation processes for NGV devices that support broadcast-based discovery. By rushing through the essential discovery phase using broadcast messages with embedded ranging parameters, the system achieves fast ranging while maintaining reliability through the bi-directional reporting mechanism that confirms successful pairing.
3Speed
If fast ranging is implemented by skipping association processes, then ranging speed is improved, but measurement accuracy deteriorates
Solution Approach 1:
The patent implements bi-directional reporting where both initiating and responding devices send ranging measurement reports to each other. This feedback mechanism allows both devices to verify measurements and calculate distances independently, ensuring measurement accuracy even when association processes are skipped. The mutual verification through feedback compensates for the reduced protocol overhead.
Data Source
AI summary
Embodiments of an access point (AP), station (STA) and method of communication are generally described herein. In a null data packet (NDP) based ranging procedure between a responding STA and an initiating STA that is unassociated with the responding STA, the responding STA may: transmit a broadcast frame that indicates one or more ranging parameters; receive, from the initiating STA, an NDP announcement (NDPA) frame that indicates transmission of a first NDP from the initiating STA; detect the first NDP from the initiating STA; transmit a second NDP for transmission to the initiating STA; and transmit, to the initiating STA, a location measurement report (LMR) that indicates: a reception time of the first NDP at the responding STA, and a transmission time of the second NDP at the responding STA.