UWB Advertising Poll Frames With Random Addresses for Private Discovery
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Solution Overview
Problem
There is a need for a random address-based advertising method and device in ultra-wideband (UWB) wireless network systems, particularly for unsecured/public advertising messages during discovery/initialization and setup processes.
Innovation Solution
A method involving the generation and transmission of an advertising poll frame with a randomly generated advertiser address field, and the reception and session initialization based on this frame in UWB wireless networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a random address is used in advertising poll frame for unsecured/public advertising, then security and privacy are improved, but device complexity increases due to random address generation and management
Solution Approach 1:
The patent applies preliminary action by pre-generating random addresses and storing them in a pool before advertising operations begin. This allows the device to quickly select and use random addresses without performing complex generation operations in real-time, thus improving security while managing device complexity through advance preparation.
Solution Approach 2:
The patent uses copying by creating multiple copies of random addresses in a pre-generated pool. Instead of generating a new random address each time advertising is needed, the device copies and uses addresses from the pre-created pool, simplifying the operational complexity while maintaining security through randomization.
2Reliability
If a random address is generated for each advertising operation, then privacy protection is improved, but energy consumption increases due to repeated random number generation
Solution Approach 1:
The patent applies preliminary action by pre-generating and storing multiple random addresses in a pool before advertising operations begin. This allows the device to quickly select and use random addresses without performing complex generation operations in real-time, thus improving privacy while managing device complexity through advance preparation.
Solution Approach 2:
The patent applies discarding and recovering by using each random address from the pre-generated pool only once, then discarding it and moving to the next address in the sequence. This ensures privacy through single-use random addresses while conserving energy by avoiding repeated generation operations, as all addresses are prepared in advance.
3Device complexity
If traditional address-based advertising is used, then device complexity is reduced, but security vulnerabilities increase in discovery/initialization processes
Solution Approach 1:
The patent applies preliminary action by pre-generating random addresses and storing them in a pool before advertising operations begin. This allows the device to quickly select and use random addresses without performing complex generation operations in real-time, thus improving security while managing device complexity through advance preparation.
Solution Approach 2:
The patent uses copying by creating multiple copies of random addresses in a pre-generated pool. Instead of generating a new random address each time advertising is needed, the device copies and uses addresses from the pre-created pool, simplifying the operational complexity while maintaining security through randomization.
Data Source
Figure 1
Figure 2(a)~2(g)
Figure 3(a)~4(c)
AI summary
A random address-based advertising method and device in an ultra-wideband wireless network system are disclosed. A method performed by means of a first device in an ultra-wideband wireless network system, according to one embodiment of the present disclosure, may comprise the steps of: generating an advertising poll frame including an advertiser address field; and transmitting the advertising poll frame to one or more second devices. The advertiser address field can be set, on the basis of the advertising poll frame corresponding to a public advertising poll frame, to an address value that is randomly generated by the first device.