公开(公告)号：US20150046703A1

公开(公告)日：2015-02-12

申请号：US14341334

申请日：2014-07-25

Applicant: Texas Instruments Incorporated

Inventor： ROBERT LIANG ,  KUMARAN VIJAYASANKAR

IPC: H04W12/08 ,  H04L9/08 ,  H04W4/00

CPC classification number: H04W12/08 ,  H04B2203/5433 ,  H04L9/0816 ,  H04W4/06 ,  H04W4/80 ,  H04W12/02

Abstract: A method of network joining. A first service node (SN) of SNs in a multi-Personal Area Network including data concentrators (DCs) that communicate with a server over a common communications medium configures a beacon request frame (BRF) including a Media Access Control (MAC) header including a header information element (HIE) or a payload IE (PIE), and a MAC CRC footer. The BRF includes a unique address of a first DC corresponding to the first SN or an encrypted data sequence with a key. The first SN transmits the BRF over the common communications medium. Responsive to receiving the BRF, the first DC processes the BRF to identify the unique address or has the key and applies the key to decipher the encrypted BRF. The first DC transmits a beacon frame over the common communications medium, wherein others of the plurality of DCs do not transmit respective beacon frames.

公开(公告)号：US20210320687A1

公开(公告)日：2021-10-14

申请号：US17356792

申请日：2021-06-24

Applicant: Texas Instruments Incorporated

Inventor： KUMARAN VIJAYASANKAR ,  ROBERT LIANG ,  JYOTHSNA KUNDURU ,  KWANG SEOP EOM

IPC: H04B1/7156 ,  H04W4/80 ,  H04W52/02

Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.

公开(公告)号：US20240275428A1

公开(公告)日：2024-08-15

申请号：US18647678

申请日：2024-04-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： KUMARAN VIJAYASANKAR ,  ROBERT LIANG ,  JYOTHSNA KUNDURU ,  KWANG SEOP EOM

IPC: H04B1/7156 ,  H04W4/80 ,  H04W52/02

CPC classification number: H04B1/7156 ,  H04W4/80 ,  H04W52/0235 ,  H04W52/0274 ,  H04B2001/71563 ,  H04B2201/71338 ,  Y02D30/70

Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.

公开(公告)号：US20150046704A1

公开(公告)日：2015-02-12

申请号：US14341366

申请日：2014-07-25

Applicant: Texas Instruments Incorporated

Inventor： ROBERT LIANG ,  KUMARAN VIJAYASANKAR

IPC: H04W12/08 ,  H04L9/08 ,  H04W4/00

CPC classification number: H04W12/08 ,  H04B2203/5433 ,  H04L9/0816 ,  H04W4/06 ,  H04W4/80 ,  H04W12/02

Abstract: A method of network joining. A first service node (SN) of SNs in a multi-Personal Area Network including data concentrators (DCs) that communicate with a server over a common communications medium configures a beacon request frame (BRF) including a Media Access Control (MAC) header including a header information element (HIE) or a payload IE (PIE), and a MAC CRC footer. The BRF includes a unique address of a first DC corresponding to the first SN or an encrypted data sequence with a key. The first SN transmits the BRF over the common communications medium. Responsive to receiving the BRF, the first DC processes the BRF to identify the unique address or has the key and applies the key to decipher the encrypted BRF. The first DC transmits a beacon frame over the common communications medium, wherein others of the plurality of DCs do not transmit respective beacon frames.

Abstract translation: 网络连接方法。 包括通过公共通信介质与服务器通信的数据集中器（DC）的多个人区域网络中的SN的第一服务节点（SN）配置包括媒体访问控制（MAC）报头的信标请求帧（BRF），所述信标请求帧包括： 标题信息元素（HIE）或有效载荷IE（PIE）以及MAC CRC页脚。 BRF包括与第一SN相对应的第一DC的唯一地址或具有密钥的加密数据序列。 第一SN通过公共通信介质发送BRF。 响应于接收BRF，第一个DC处理BRF以识别唯一地址或具有密钥，并应用密钥来解密加密的BRF。 第一DC在公共通信介质上发送信标帧，其中多个DC中的其他DC不发送相应的信标帧。

公开(公告)号：US20230223986A1

公开(公告)日：2023-07-13

申请号：US18185609

申请日：2023-03-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： KUMARAN VIJAYASANKAR ,  ROBERT LIANG ,  JYOTHSNA KUNDURU ,  KWANG SEOP EOM

IPC: H04W52/02 ,  H04B1/7156

CPC classification number: H04W52/0274 ,  H04B1/7156 ,  H04B2201/71338

Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.

公开(公告)号：US20170310358A1

公开(公告)日：2017-10-26

申请号：US15332707

申请日：2016-10-24

Applicant: Texas Instruments Incorporated

Inventor： KUMARAN VIJAYASANKAR ,  ROBERT LIANG ,  JYOTHSNA KUNDURU ,  KWANG SEOP EOM

IPC: H04B1/7156 ,  H04W4/00 ,  H04W52/02

CPC classification number: H04B1/7156 ,  H04B2001/71563 ,  H04W4/80 ,  H04W52/0235 ,  H04W52/0274 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/40

Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.