公开(公告)号：US09712356B2

公开(公告)日：2017-07-18

申请号：US15007224

申请日：2016-01-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kumaran Vijayasankar ,  Timothy M. Schmidl ,  Ramanuja Vedantham

IPC: H03C3/00 ,  H04L27/12 ,  H04L27/00 ,  H04B1/707 ,  H04L29/06 ,  H04L27/26

CPC classification number: H04L27/12 ,  H04B1/707 ,  H04L1/007 ,  H04L1/0072 ,  H04L1/0086 ,  H04L27/0008 ,  H04L27/2601 ,  H04L69/22

Abstract: A wireless transmission having a header and a payload is sent by transmitting a preamble of the header with a first modulation, wherein the preamble carries a coded modulation indicator. The payload and a remainder of the header are transmitted with a modulation associated with the coded modulation indicator. When the transmission is received, the preamble is demodulated in accordance with the first modulation. The coded modulation indicator is then decoded, and the payload and the remainder of the header are demodulated in accordance with the modulation indicated by the decoded modulation indicator.

公开(公告)号：US09641443B2

公开(公告)日：2017-05-02

申请号：US15050227

申请日：2016-02-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Eko N. Onggosanusi ,  Anand G. Dabak ,  Timothy M. Schmidl ,  Badri Varadarajan

IPC: H04L12/833 ,  H04W24/08 ,  H04W8/30 ,  H04J11/00 ,  H04B7/06 ,  H04B7/08 ,  H04L1/00 ,  H04B17/336 ,  H04B17/382 ,  H04L27/26

CPC classification number: H04L47/2458 ,  H04B7/0691 ,  H04B7/0697 ,  H04B7/0848 ,  H04B7/0854 ,  H04B17/336 ,  H04B17/382 ,  H04J11/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/2601 ,  H04W8/30 ,  H04W24/08

Abstract: A method of transmitting a wireless signal (FIGS. 3A-3C) is disclosed. A data stream is divided (306) into a first data stream and a second data stream. The first data stream is encoded (300) at a first data rate. The second data stream is encoded (320) at a second data rate different from the first data rate. A first part of the encoded first data stream is transmitted from a first transmit antenna (308). A second part of the encoded first data stream is transmitted from a second transmit antenna (312).

公开(公告)号：US09510139B2

公开(公告)日：2016-11-29

申请号：US14824705

申请日：2015-08-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Anuj Batra ,  Timothy M. Schmidl ,  Srinath Hosur ,  June Chul Roh

IPC: H04L29/06 ,  H04W4/00 ,  H04L27/18 ,  H04L27/20 ,  H04L27/26

CPC classification number: H04W4/80 ,  H04L27/18 ,  H04L27/20 ,  H04L27/2675 ,  H04L69/22 ,  H04W52/36 ,  H04W52/367 ,  H04W72/0453 ,  H04W74/0816

Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment using M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK. Also, the PHY layer uses a constant symbol rate for BAN packet transmissions.

Abstract translation: 在至少一些实施例中，通信设备包括具有物理（PHY）层的收发器。 PHY层被配置为使用M-ary PSK，差分M-ary PSK或旋转差分M-ary PSK的有限多径环境中的身体局域网（BAN）操作。 此外，PHY层对于BAN分组传输使用恒定的符号率。

公开(公告)号：US20130343366A1

公开(公告)日：2013-12-26

申请号：US13917435

申请日：2013-06-13

Applicant: Texas Instruments Incorporated

Inventor： Anuj Batra ,  Timothy M. Schmidl ,  Srinath Hosur ,  June C. Roh

IPC: H04W4/00

CPC classification number: H04W4/80 ,  H04L27/18 ,  H04L27/20 ,  H04L27/2675 ,  H04L69/22 ,  H04W52/36 ,  H04W52/367 ,  H04W72/0453 ,  H04W74/0816

Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment based on a constant symbol rate for BAN packet transmissions and based on M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK modulation. The PHY layer is configured to transmit and receive data in a frequency band selected from the group consisting of: 402-405 MHz, 420-450 MHz, 863-870 MHz, 902-928 MHz, 950-956 MHz, 2360-2400 MHz, and 2400-2483.5 MHz.

Abstract translation: 在至少一些实施例中，通信设备包括具有物理（PHY）层的收发器。 基于用于BAN分组传输的恒定符号速率并且基于M-ary PSK，差分M-ary PSK或旋转差分M-ary PSK调制，PHY层被配置用于在有限多径环境中的体区域网络（BAN）操作。 PHY层被配置为从选自以下的频带发送和接收数据：402-405MHz，420-450MHz，863-870MHz，902-928MHz，950-956MHz，2360-2400MHz ，和2400-2483.5MHz。

公开(公告)号：US20230292263A1

公开(公告)日：2023-09-14

申请号：US18319069

申请日：2023-05-17

Applicant: Texas Instruments Incorporated

Inventor： Timothy M. Schmidl ,  Anuj Batra ,  Srinath Hosur

IPC: H04W56/00 ,  H04L27/26 ,  H04W4/80

CPC classification number: H04W56/001 ,  H04L27/2613 ,  H04L27/2634 ,  H04W4/80 ,  H04L27/26132

Abstract: A method includes receiving a first plurality of symbols comprising complex portions. The method further includes applying conjugate symmetry to the first plurality of symbols, producing a second plurality of symbols comprising no complex portions. The method further includes transforming the second plurality of symbols using an inverse fast Fourier transform, producing a third plurality of symbols. The method further includes interpolating the third plurality of symbols, generating a short training field comprising at least one real portion of the third plurality of symbols, generating a long training field comprising at least one real portion of the third plurality of symbols, and transmitting the short training field and long training field in a WPAN.

公开(公告)号：US20160165436A1

公开(公告)日：2016-06-09

申请号：US15042634

申请日：2016-02-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Timothy M. Schmidl ,  Anuj Batra

IPC: H04W12/02

CPC classification number: H04W12/02 ,  H04L25/03866 ,  H04L27/2601

Abstract: An integrated circuit includes logic configured to generate scrambling sequences, each based on a different scrambling seed, for a smart-utility-network data packet communication. A Hamming distance between any two scrambling sequences is half the length of a PSDU of the data packet or greater.

Abstract translation: 集成电路包括被配置为产生扰频序列的逻辑，每个加扰序列基于不同的加扰种子，用于智能公用事业网络数据分组通信。 任何两个加扰序列之间的汉明距离是数据分组的PSDU的长度的一半或更大。

公开(公告)号：US20150373738A1

公开(公告)日：2015-12-24

申请号：US14840933

申请日：2015-08-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： ARIS PAPASAKELLARIOU ,  Timothy M. Schmidl ,  Eko N. Onggosanusi ,  Anand G. Dabak

IPC: H04W72/12 ,  H04W72/00 ,  H04L27/26 ,  H04L12/18

CPC classification number: H04W72/1289 ,  G06Q20/10 ,  G06Q30/00 ,  G06Q40/00 ,  H04L5/0048 ,  H04L5/0053 ,  H04L12/18 ,  H04L27/2601 ,  H04L27/2602 ,  H04N21/437 ,  H04N21/44209 ,  H04W52/322 ,  H04W72/005 ,  H04W72/1205 ,  H04W72/14

Abstract: Embodiments of the invention provide methods for maximizing the bandwidth utilization in the uplink of a communication system supporting time division multiplexing between unicast and multicast/broadcast communication modes during transmission time intervals in the downlink of a communication system. This is accomplished by multiplexing at least unicast control signaling for UL scheduling assignments in TTIs supporting the multicast/broadcast communication mode. Moreover, multiplexing of unicast control signaling can also be accomplished by splitting a symbol of the multicast/broadcast TTI into two shorter symbols with the first of these two shorter symbols carrying at least unicast control signaling and the second of these shorter symbols carrying multicast/broadcast signaling.

Abstract translation: 本发明的实施例提供了一种用于在通信系统的下行链路中的传输时间间隔期间最大化在单播和多播/广播通信模式之间支持时分复用的通信系统的上行链路中的带宽利用率的方法。 这通过在支持多播/广播通信模式的TTI中多路复用至少用于UL调度分配的单播控制信令来实现。 此外，单播控制信令的复用也可以通过将多播/广播TTI的符号分成两个较短的符号来实现，其中这两个较短的符号中的第一个携带至少单播控制信令，并且这些较短的符号中的第二个携带多播/广播 信令。

公开(公告)号：US09154350B2

公开(公告)日：2015-10-06

申请号：US14061429

申请日：2013-10-23

Applicant: Texas Instruments Incorporated

Inventor： Anuj Batra ,  Timothy M. Schmidl ,  Srinath Hosur ,  June C. Roh

IPC: H04B7/00 ,  H04L27/20 ,  H04L27/18 ,  H04W4/00 ,  H04L29/06

CPC classification number: H04W4/80 ,  H04L27/18 ,  H04L27/20 ,  H04L27/2675 ,  H04L69/22 ,  H04W52/36 ,  H04W52/367 ,  H04W72/0453 ,  H04W74/0816

Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment using M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK. Also, the PHY layer uses a constant symbol rate for BAN packet transmissions.

Abstract translation: 在至少一些实施例中，通信设备包括具有物理（PHY）层的收发器。 PHY层被配置为使用M-ary PSK，差分M-ary PSK或旋转差分M-ary PSK的有限多径环境中的身体局域网（BAN）操作。 此外，PHY层对于BAN分组传输使用恒定的符号率。

公开(公告)号：US20140112330A1

公开(公告)日：2014-04-24

申请号：US14025628

申请日：2013-09-12

Applicant: Texas Instruments Incorporated

Inventor： Timothy M. Schmidl ,  Anuj Batra ,  Srinath Hosur

IPC: H04W56/00 ,  H04W4/00

CPC classification number: H04W56/001 ,  H04L27/2613 ,  H04L27/2634 ,  H04W4/80

Abstract: A method includes receiving a first plurality of symbols comprising complex portions. The method further includes applying conjugate symmetry to the first plurality of symbols, producing a second plurality of symbols comprising no complex portions. The method further includes transforming the second plurality of symbols using an inverse fast Fourier transform, producing a third plurality of symbols. The method further includes interpolating the third plurality of symbols, generating a short training field comprising at least one real portion of the third plurality of symbols, generating a long training field comprising at least one real portion of the third plurality of symbols, and transmitting the short training field and long training field in a WPAN.

Abstract translation: 一种方法包括接收包括复数部分的第一多个符号。 该方法还包括将共轭对称性应用于第一多个符号，产生不包含复杂部分的第二多个符号。 该方法还包括使用快速傅里叶反变换来变换第二多个符号，产生第三个多个符号。 该方法还包括内插第三多个符号，产生包括第三多个符号的至少一个实部的短训练场，产生包括第三多个符号的至少一个实部的长训练场，并发送 短期培训领域和长期培训领域的WPAN。