eBCS Authentication Element Structure for Low-Latency Broadcast Access
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Solution Overview
Problem
The existing wireless communication standards lack authentication information in the Enhanced Broadcast Service (eBCS) response elements, leading to significant data authentication delays and data loss during the eBCS acquisition process, particularly for delay-sensitive data and real-time streaming transmissions.
Innovation Solution
Modifying the enhanced broadcast response and request ANQP-element structures, as well as the eBCS response and request element structures, to include unified authentication information for both associated and non-associated eBCS, enabling rapid acquisition and reducing authentication delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the STA waits for the eBCS info frame to obtain authentication information, then the authentication information can be obtained, but the authentication delay increases significantly
Solution Approach 1:
The patent applies preliminary action by including authentication information in the eBCS response element structure before the STA actually needs to authenticate data. The authentication information is prepared and provided in advance through the ANQP response or eBCS response, allowing the STA to perform authentication immediately when data is received, without waiting for subsequent eBCS info frames. This resolves the contradiction by providing authentication information proactively rather than reactively.
2Reliability
If the STA discards received HCFA MPDU due to authentication delay, then authentication can be performed later, but data loss occurs
Solution Approach 1:
The patent prevents data loss by providing authentication information in advance through the eBCS response element. When the STA receives HCFA MPDU, the authentication information is already available from the preliminary eBCS response, allowing immediate authentication without discarding the data. This resolves the contradiction by eliminating the need to discard data due to authentication delays.
Solution Approach 2:
The eBCS response element acts as an intermediary that carries authentication information between the AP and STA. This intermediary structure enables the STA to obtain authentication information without waiting for the eBCS info frame, allowing immediate authentication of received data and preventing data loss. The response element serves as a mediator that bridges the timing gap between data reception and authentication.
3Adaptability or versatility
If separate request and response element structures are used for associated and non-associated eBCS, then specific requirements can be met, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a unified eBCS response element structure that can serve both associated and non-associated STAs. This single element structure includes authentication information and other necessary fields that work for both scenarios, eliminating the need for separate element structures. The unified design reduces complexity while maintaining adaptability to different STA states.
Solution Approach 2:
The patent merges the functionality of separate request and response element structures into a unified eBCS response element. By combining the authentication information and control fields into a single integrated element, the patent reduces structural complexity while maintaining the ability to support both associated and non-associated eBCS. This merging approach simplifies the overall protocol structure.
Data Source
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AI summary
The present application provides a wireless communication method and a device. An enhanced broadcast request ANQP element structure and an enhanced broadcast response ANQP element structure are modified, or an eBCS request element structure and an eBCS response element structure are modified, so as to reduce the data authentication delay in an eBCS acquisition process and alleviate the problem of data loss caused by the eBCS authentication delay. The present application further provides a unified eBCS request element and a unified eBCS response element to perform eBCS request and acquisition, which are valid for associated and unassociated eBCSs.