Slave Device Dynamic Address Authentication for BLE

The patent implements a dynamic address verification mechanism where the slave device transitions from a static authorized list to an active verification process. When a connection request is received, the slave device performs cryptographic verification of the master device's address against stored authorized addresses. This dynamic approach allows the system to adapt to address changes while maintaining security, as the verification process can accommodate new addresses without requiring manual list updates.

The patent changes the verification parameter from simple address matching to cryptographic verification. By using cryptographic functions to verify addresses, the system can handle address changes more effectively. The cryptographic verification process can validate new addresses through security tokens or certificates, allowing the master device address to change while maintaining the ability to verify authorization.

The patent implements periodic broadcasting of availability frames by the slave device instead of continuous broadcasting. The device alternates between broadcasting availability frames and entering low-power states. This periodic approach maintains connection establishment capability while significantly reducing energy consumption during idle periods when no connection requests are expected.

The slave device monitors incoming connection requests and adjusts its broadcasting behavior accordingly. When a connection request is detected, the device immediately broadcasts availability frames to respond. This self-service mechanism ensures rapid connection establishment when needed while avoiding unnecessary energy consumption during periods when the device does not require immediate connectivity.