Secure Sounding Signals for WLAN Resource Management
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Solution Overview
Problem
Wireless local area networks (WLANs) face challenges in efficiently managing resources to provide bandwidth and response times due to multiple devices sharing resources, with limitations from communication protocols and hardware bandwidth, and the need for secure operation with both new and legacy devices.
Innovation Solution
The proposed solution involves a radio architecture that includes front-end module, radio IC, and baseband processing circuitry to generate secure sounding signals and extend traffic indication maps (TIMs) during beacon intervals, using methods like null data packets and cyclic shifts to ensure secure ranging and location measurement reporting, protecting against counterfeit ranging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple devices share the same wireless resources, then network coverage and device compatibility are improved, but resource allocation efficiency and bandwidth availability deteriorate
Solution Approach 1:
The patent segments the wireless medium access by introducing scheduled transmission opportunities (TXOPs) where the AP allocates specific time slots to different devices. This segmentation allows legacy devices to operate in scheduled slots while newer devices can utilize other time periods, thereby maintaining compatibility across device types while improving overall resource allocation efficiency through structured time-division multiplexing.
2Reliability
If secure mode operation is implemented, then network security against counterfeit ranging is improved, but device complexity and protocol implementation difficulty worsen
Solution Approach 1:
The patent implements preliminary action by establishing secure authentication and key exchange protocols before actual ranging operations commence. The AP and devices perform mutual authentication and establish encryption keys in advance, ensuring that subsequent ranging measurements are protected against counterfeit attacks. This preliminary security setup prevents attackers from injecting fake ranging signals without compromising the simplicity of the actual ranging protocol.
3Productivity
If resource sharing among many devices is increased, then network utilization is improved, but response times and bandwidth availability to individual devices worsen
Solution Approach 1:
The patent implements dynamic resource allocation where the AP adjusts transmission opportunities and bandwidth allocation based on real-time network conditions and device requirements. The system dynamically schedules TXOPs to prioritize time-sensitive applications while maintaining high overall network utilization. This dynamic approach allows the network to adapt to varying traffic patterns, ensuring that bandwidth-hungry applications receive sufficient resources while maintaining responsive service for time-critical operations.
Data Source
AI summary
Methods, apparatuses, and computer readable media for location measurement reporting in a wireless network are disclosed. An apparatus of a responder station is disclosed, the apparatus comprising processing circuitry configured to derive bits from a temporary key, and generate a first sequence and a second sequence using the bits, wherein the first sequence and second sequence comprise one or more symbols. The processing circuitry is further configured to concatenate the first sequence and the second sequence to form a new first sequence comprising the first sequence and the second sequence, and concatenate a modified first sequence and a modified second sequence to form a new second sequence. The processing circuitry may be configured to repeat a number of times the concatenate the first sequence through the concatenate the modified first sequence.