UWB Session Setup Using Random Public Address Advertising
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Solution Overview
Problem
The existing UWB wireless network systems lack effective methods for advertising and session setup, particularly in the context of IEEE 802.15.4z and the emerging IEEE 802.15.4ab standards, which are crucial for high-speed data communication and accurate ranging.
Innovation Solution
The proposed solution involves transmitting and receiving advertising poll and response frames with randomly generated public addresses, followed by a start-of-ranging frame, to facilitate session setup in UWB wireless networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional advertising methods are used in UWB networks, then device discovery is possible, but session setup efficiency and communication reliability are insufficient
Solution Approach 1:
The patent applies preliminary action by implementing an advertising phase before the actual ranging and data communication phases. During the advertising phase, devices exchange advertising poll frames and advertising response frames to pre-establish session parameters, select appropriate packet formats, and validate compatibility. This preliminary setup ensures that when actual communication begins, the session is already optimized for reliability and efficiency, resolving the contradiction between setup speed and communication reliability.
2Reliability
If public addresses are randomly generated for advertising, then device identification and security are improved, but address management complexity increases
Solution Approach 1:
The patent applies self-service by having each device automatically generate its own public address during the advertising phase without requiring manual configuration or centralized address management. The advertising response frame includes the responder's public address, which is automatically used for subsequent communication. This self-service approach simplifies address management while maintaining security through random generation, resolving the contradiction between security improvement and management complexity.
3Adaptability or versatility
If multiple packet formats are supported for advertising, then adaptability to different communication scenarios is improved, but protocol complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the communication protocol into distinct phases: advertising phase, ranging phase, and data communication phase. Each phase uses specific packet formats tailored to its requirements. The advertising phase uses advertising poll and response frames for discovery and setup, while subsequent phases use ranging frames and data frames. This segmentation allows multiple packet formats to coexist without increasing overall protocol complexity, as each format is optimized for its specific function and the device only needs to implement the formats relevant to its operational phase.
Data Source
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Figure 2(a)~2(g)
Figure 3(a)~4(c)
AI summary
Disclosed are a method and an apparatus for setting up and maintaining a session in an ultra-wideband wireless network system. A method performed by a first device in an ultra-wideband (UWB) wireless network system according to an embodiment of the present disclosure may comprise the steps of: transmitting an advertising poll frame to a second device; receiving an advertising response frame from the second device; and transmitting a start-of-ranging (SOR) frame to the second device. On the basis that the advertising response frame is a public advertising response frame, the public advertising response frame may include a responder address which is a public address randomly generated by the second device.