公开(公告)号：US20240276533A1

公开(公告)日：2024-08-15

申请号：US18567436

申请日：2021-12-09

Applicant: ADEMCO INC.

Inventor： Nagaraj LAKSHMINARAYAN ,  Sachin JOY ,  Arun Handanakere SHESHAGIRI ,  Sachin Maganti PRAKASH ,  Sheetal R. KADAM ,  Rajeev RANJAN

IPC: H04W72/541 ,  H04W72/0446

CPC classification number: H04W72/541 ,  H04W72/0446

Abstract: An apparatus for communication with a plurality of devices using time divisional multiple access (TDMA) is described. The apparatus includes processing circuitry configured to for a particular duration, scan a first channel for one or more data packets being transmitted over the first channel to determine if the apparatus is experiencing signal interference. In response to determining that the apparatus is not experiencing signal interference, the processing circuitry is configured to output a first beacon at a first time using TDMA, wherein the first time is a predefined interval amount of time after an output time of a most recent beacon previously output by the apparatus. Otherwise, the processing circuitry is configured to output the first beacon at a second time using TDMA, wherein the second time comprises the first time plus-or-minus a time shift period.

公开(公告)号：US20240275476A1

公开(公告)日：2024-08-15

申请号：US18567404

申请日：2021-12-09

Applicant: ADEMCO INC.

Inventor： Nagaraj Chickmagalur LAKSHMINARAYAN ,  Sachin JOY ,  Arun Handanakere SHESHAGIRI

IPC: H04B7/212

CPC classification number: H04B7/212

Abstract: An apparatus for communication with a plurality of devices using time divisional multiple access (TDMA) is described. The apparatus includes processing circuitry configured to receive a signal from a device of the plurality of devices. The processing circuitry is further configured to determine, using the signal from the device, whether the device is experiencing signal interference. In response to determining that the device is not experiencing signal interference, the processing circuitry is configured to output a superframe including a first beacon at a first time, wherein the first beacon indicates a starting of the superframe. In response to determining that the device is experiencing signal interference, the processing circuitry is configured to output a time-shifted superframe including a second beacon at a second time that is different than the first time, wherein the second beacon indicates a starting of the time-shifted superframe.

公开(公告)号：US20230403093A1

公开(公告)日：2023-12-14

申请号：US18252090

申请日：2021-11-16

Applicant: Ademco Inc.

Inventor： Nagaraj Chickmagalur LAKSHMINARAYAN ,  Arun Handanakere SHESHAGIRI

IPC: H04J11/00 ,  H04W56/00

CPC classification number: H04J11/005 ,  H04W56/001 ,  H04W56/003

Abstract: Systems and methods for avoiding potential broadcast interference between radio frequency transmissions in connected systems are provided. Such systems and methods can include determining that a first central hub device and a second central hub device are located within a potential broadcast interference range of each other and, responsive thereto, transmitting a first beacon offset sequence time to the first central hub device and a second beacon offset sequence time to the second central hub device. The first beacon offset sequence time can modify a base time at which the first central hub device is scheduled to broadcast a first TDMA beacon, and the second beacon offset sequence time can modify the base time at which the second central hub device is scheduled to broadcast a second TDMA beacon such that the second TDMA beacon can fail to overlap any portion of the first TDMA beacon.