公开(公告)号：US20220360979A1

公开(公告)日：2022-11-10

申请号：US17314865

申请日：2021-05-07

Applicant: Texas Instruments Incorporated

Inventor： Archanaa SANTHANA KRISHNAN ,  Alexis Justine BURNIGHT ,  Ariton E. XHAFA

IPC: H04W12/041 ,  H04W12/033 ,  H04W12/0471 ,  H04W76/10

Abstract: A wireless interface includes: network formation circuitry configured to establish a wireless network between a primary node and a secondary node; data exchange circuitry configured to perform data exchanges between the primary node and the secondary node using secure sessions; and key refreshment circuitry configured to derive a new network key for the network based on a pre-shared key and a current network key concatenated with a session count. The new key is derived during at least one of the secure sessions.

公开(公告)号：US20200187010A1

公开(公告)日：2020-06-11

申请号：US16216919

申请日：2018-12-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ariton E. XHAFA ,  Ram MACHNESS ,  Minghua FU ,  Ramanuja VEDANTHAM

IPC: H04W12/10 ,  H04L9/06 ,  H04W12/00 ,  H04W64/00 ,  H04L1/00 ,  H04W4/80 ,  H04W12/12

Abstract: At least some aspects of the present disclosure provide for a method of data transmission, performed by a wireless device. In some examples, the method includes receiving a localization tone having a first value. The method further includes inserting the localization tone into a data packet at an application layer of a communication protocol stack, the localization tone preceding data of a payload of the data packet and having a last bit immediately preceding a first bit of the data of the payload. The method further includes generating a modified localization tone estimating an effect of processing on the localization tone, wherein the modified localization tone is generated and configured to have the first value after undergoing processing. The method further includes replacing the localization tone in the data packet with the modified localization tone. The method further includes transmitting the data packet.