公开(公告)号：US11140161B2

公开(公告)日：2021-10-05

申请号：US16430632

申请日：2019-06-04

Applicant: Silicon Laboratories Inc.

Inventor： Venkat Mattela ,  Duen Jeng Wang

IPC: H04L29/06 ,  H04W12/06 ,  H04W12/69

Abstract: An IoT device has a public device identifier and a private device identifier, where the public device identifier is publicly available and the private device identifier is secret but kept in a secure device database as a correspondence. A registration request is sent from the IoT device to an association server in communication with the device database having an association between IoT public identifier and a corresponding IoT private identifier. The association server which receives the registration request responds with a registration acknowledgement containing, in encrypted form, the private device identifier of the original request and, optionally, the public device identifier associated with the registration request. The requesting IoT device receives the association acknowledgement, decrypts the private device identifier, compares it to its own device identifier, and if they match, sends one or more association requests.

公开(公告)号：US10742429B2

公开(公告)日：2020-08-11

申请号：US15811690

申请日：2017-11-14

Applicant: Silicon Laboratories Inc.

Inventor： Partha Sarathy Murali ,  Ajay Mantha ,  Nagaraj Reddy Anakala ,  Subba Reddy Kallam ,  Venkat Mattela

IPC: H04L12/12 ,  H04W84/12 ,  H04W4/80 ,  H04W84/18

Abstract: A mesh receiver has a wakeup receiver for reception of a wakeup sequence formed by keyed RF or a sequence of wireless packets and gaps, a transmitter forming low speed RF wakeup sequence to other mesh stations, a mesh receiver for reception of high speed WLAN packets, the transmitter sending a wireless ACK packet in response to a wakeup sequence, the mesh receiver thereafter receiving wireless packets from a remote station, the mesh transmitter sending an ACK, the mesh station thereafter identifying a next hop station, and sending a wakeup sequence to that station, after receipt of an ACK, sending the data, the mesh receiver and mesh transmitter thereafter going to sleep.

公开(公告)号：US10708780B2

公开(公告)日：2020-07-07

申请号：US15883092

申请日：2018-01-29

Applicant: Silicon Laboratories Inc.

Inventor： Sriram Mudulodu ,  Venkat Mattela

IPC: H04W4/00 ,  H04W12/06 ,  H04L9/32 ,  H04W12/04

Abstract: An Internet of Things (IoT) device has a public device identifier and a private device identifier, where the public device identifier is publicly available and the private device identifier is secret but kept in a secure device database as a tuple. A registration request containing encrypted credentials comprising at least a private identifier and optionally a public identifier is sent from the IoT device to an association server in communication with a device database having an association between IoT public identifier and a corresponding IoT private identifier. The association server which receives the registration request and encrypted credentials responds with a registration acknowledgement when the decrypted credentials match the tuple in the device database, or forwards the request to a registration server when it does not. The requesting IoT device receives an acknowledgement and is thereafter able to join the wireless network.