公开(公告)号：US08964724B2

公开(公告)日：2015-02-24

申请号：US13633834

申请日：2012-10-02

Applicant: Texas Instruments Incorporated

Inventor： Jin-Meng Ho

IPC: H04J3/06 ,  H04W56/00

CPC classification number: H04W56/003 ,  H04W56/001 ,  H04W56/0015 ,  H04W56/002

Abstract: Embodiments provide a method to accommodate clock drift and guard time in a distributed fashion. A first device is adapted to communicate with a second device. A clock in the first device is synchronized to a clock in the second device using beacon or/and acknowledgement frames from the second device. A nominal guard time is computed that accounts for clock drift in the first and second devices during a nominal synchronization interval. An additional guard time is computed that accounts for clock drift in the first and second devices during an additional interval beyond the nominal synchronization interval. An available transmission interval is determined within an allocation interval for transmissions between the devices, wherein the beginning and/or the end of the available transmission interval are selected by accounting for the nominal guard time and/or the additional guard time. One or more frames are transmitted within the available transmission interval.

Abstract translation: 实施例提供了以分布式方式适应时钟漂移和保护时间的方法。 第一设备适于与第二设备通信。 第一设备中的时钟使用来自第二设备的信标或/和确认帧与第二设备中的时钟同步。 计算在额定同步间隔期间考虑第一和第二设备中的时钟漂移的标称保护时间。 计算额外的保护时间，其在超过标称同步间隔的附加间隔期间考虑第一和第二设备中的时钟漂移。 在用于设备之间的传输的分配间隔内确定可用传输间隔，其中通过计算标称保护时间和/或附加保护时间来选择可用传输间隔的开始和/或结束。 在可用传输间隔内传输一个或多个帧。

公开(公告)号：US20150038187A1

公开(公告)日：2015-02-05

申请号：US14520793

申请日：2014-10-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jin-Meng Ho ,  June Chul Roh

IPC: H04W76/02 ,  H04W72/04

CPC classification number: H04W76/02 ,  A61N1/37252 ,  H04W72/04 ,  H04W76/10

Abstract: A system and method for providing wireless communications between a medical controller hub and an implant node are disclosed. The hub transmits signals to facilitate communication connections with the node. The signals include connection invitation polls with identification parameters. A node monitors the hub's transmissions for the connection invitation polls. When a poll is detected, the node compares the identification parameters to a list of preferred identification values. If the received identification parameter is on the preferred list, and the node and hub are not already connected, then the node responds to the connection invitation poll. If the received identification parameter is not on the preferred list, then the node continues to monitor hub transmissions for other connection invitation polls that include identification parameters that are on the preferred list.

Abstract translation: 公开了一种用于在医疗控制器集线器和植入物节点之间提供无线通信的系统和方法。 集线器发送信号以促进与节点的通信连接。 信号包括带有识别参数的连接邀请轮询。 节点监视中心的传输以进行连接邀请轮询。 当检测到轮询时，节点将识别参数与首选标识值的列表进行比较。 如果接收到的标识参数在首选列表上，并且节点和集线器尚未连接，则节点响应连接邀请轮询。 如果接收到的标识参数不在优选列表上，则节点继续监视其他连接邀请轮询的集线器传输，其中包括在优选列表上的标识参数。

公开(公告)号：US20140064488A1

公开(公告)日：2014-03-06

申请号：US13969154

申请日：2013-08-16

Applicant: Texas Instruments Incorporated

Inventor： Jin-Meng Ho

IPC: H04W12/12

CPC classification number: H04W12/12 ,  H04L2463/062 ,  H04W12/003 ,  H04W12/04

Abstract: Key fob and vehicle control unit identifiers (IDs) are used for entity authentication or trust transfer to achieve a secured initial pairing. The key fob is capable of transmitting only (not receiving) and is paired with a control unit in a vehicle or with any other control device. Use of the key fob and control unit IDs prevents unauthorized pairing and access to the operation key (OpKey) that is later used for communications between the devices. Elliptical curve cryptography (ECC) is used for strong security and efficient implementation. In the pairing process, device IDs are used for entity authentication and public key cryptography is used for easy key management. Symmetric encryption is used for fast normal operation and to accommodate key fob addition or revocation after key fob loss.

Abstract translation: 密钥卡和车辆控制单元标识符（ID）用于实体认证或信任传输，以实现安全的初始配对。 钥匙扣只能发送（不接收），并与车辆中的控制单元或任何其他控制装置配对。 使用密钥卡和控制单元ID可防止未经授权的配对和访问随后用于设备之间通信的操作键（OpKey）。 椭圆曲线加密（ECC）用于强大的安全性和高效率的实现。 在配对过程中，设备ID用于实体认证，公钥密码用于轻松管理密钥。 对称加密用于快速正常操作，并在密钥丢失后适应密钥卡添加或撤销。

公开(公告)号：US10432408B2

公开(公告)日：2019-10-01

申请号：US15632820

申请日：2017-06-26

Applicant: Texas Instruments Incorporated

Inventor： Jin-Meng Ho

IPC: H04L29/06 ,  H04L9/32 ,  B60R25/10 ,  G07C9/00 ,  H04L9/08 ,  B60R25/24

Abstract: A control unit device in one disclosed embodiment includes a receiver and a memory that stores one or more operation keys and program instructions. The control unit further includes a processor coupled to the receiver and the memory. The program instructions are executable by the processor to cause the control unit device to, in response to a revocation command received by the receiver, perform a revocation process by selecting which of the one or more operation keys to retain in the memory based on, for each of the one or more operation keys, whether the control unit receives a message encrypted by the operation key during the revocation process.

公开(公告)号：US10320492B2

公开(公告)日：2019-06-11

申请号：US15804958

申请日：2017-11-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jin-Meng Ho

IPC: H04W4/00 ,  H04B15/00 ,  H04W48/12

Abstract: A system and method for minimizing or preventing interference between wireless networks is disclosed. A network hub broadcasts a beacon signal within repeating beacon periods. The position of the beacon signal shifts within each beacon period based upon a predetermined pseudo-random sequence. The beacon signal includes data identifying the current beacon shift sequence and the current phase of the sequence. Neighboring hubs independently or jointly determine and broadcast their own beacon shift sequences and phases for their respective networks from a predetermined list. Nodes connected with the network hubs are assigned allocation intervals having a start time that is set relative to the beacon signal. The start time and duration of the allocation interval wraps around the beacon period if the allocation-interval would otherwise start or continue in a next beacon period.

公开(公告)号：US09860876B2

公开(公告)日：2018-01-02

申请号：US15012466

申请日：2016-02-01

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jin-Meng Ho

IPC: H04W72/04 ,  H04W74/06 ,  H04W74/08 ,  H04L12/873

CPC classification number: H04W72/0406 ,  H04L47/522 ,  H04W72/048 ,  H04W74/06 ,  H04W74/08 ,  H04W74/0808

Abstract: Embodiments of the invention provide a best-effort scheduled access method and system that enable nodes to request, and a hub to assign, tentative, but not committed, scheduled allocations, referred to as unscheduled bilink allocations, in which data traffic is transferred between the nodes and the hub on a best-effort basis. The tentative allocations will be available if the network of the hub still has enough bandwidth, but will be shifted or reduced otherwise. This invention unifies tentative and committed scheduled allocations in the same access framework, thereby facilitating access scheduling and offering access flexibility.

公开(公告)号：US09479932B2

公开(公告)日：2016-10-25

申请号：US14858434

申请日：2015-09-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jin-Meng Ho ,  Eric Peeters

IPC: H04W12/06 ,  H04W12/04 ,  H04L29/06 ,  H04L9/08 ,  G06K7/10 ,  G07C9/00 ,  H04L9/14

CPC classification number: B60R25/24 ,  B60R2325/108 ,  G06K7/10227 ,  G07C9/00309 ,  G07C2009/00769 ,  H04L9/0822 ,  H04L9/0838 ,  H04L9/0844 ,  H04L9/0861 ,  H04L9/0897 ,  H04L9/14 ,  H04L9/3013 ,  H04L9/3066 ,  H04L9/3263 ,  H04L9/3268 ,  H04L9/3271 ,  H04L63/0428 ,  H04L63/061 ,  H04L2209/24 ,  H04L2209/80 ,  H04L2209/805 ,  H04L2209/84 ,  H04W12/04

Abstract: A key fob includes a transceiver to send and receive signals, a memory to store a key fob identification (KFID), and a processor coupled to said transceiver and memory. The processor is to execute, along with a pairing device, an identification (ID) authenticated key agreement protocol based on the KFID to authenticate a pairing device and to generate a common secret encryption key known only by the processor and the pairing device. The Processor receives a control unit identification (CUID) encrypted by the pairing device with the common secret encryption key, execute along with the control unit associated with the CUID an ID authenticated key agreement protocol based on the CUID to authenticate the control unit, generates a second common secret encryption key known only by the processor and the control unit, and receives an operation key encrypted by the control unit with the second common secret encryption key.

Abstract translation: 密钥卡包括用于发送和接收信号的收发器，用于存储密钥卡标识（KFID）的存储器以及耦合到所述收发器和存储器的处理器。 处理器将与配对设备一起执行基于KFID的识别（ID）认证的密钥协商协议，以验证配对设备并生成仅由处理器和配对设备知道的公用密钥。 处理器通过公用秘密加密密钥接收由配对设备加密的控制单元标识（CUID），与基于CUID的ID认证密钥协商协议与CUID相关联的控制单元一起执行以认证控制单元，生成 第二公共秘密加密密钥，仅由处理器和控制单元知道，并且接收由控制单元用第二公共秘密加密密钥加密的操作密钥。

公开(公告)号：US09456432B2

公开(公告)日：2016-09-27

申请号：US15093322

申请日：2016-04-07

Applicant: Texas Instruments Incorporated

Inventor： Jin-Meng Ho

IPC: H04W56/00

CPC classification number: H04W56/003 ,  H04W56/001 ,  H04W56/0015 ,  H04W56/002

Abstract: Embodiments of the invention provide a method to accommodate clock drift and guard time in a centralized fashion. In one embodiment, a device is adapted to communicate. Clocks are synchronized using beacon or/and acknowledgement frames. A centralized guard time is calculated between two neighboring allocation intervals. The centralized guard time accounts for clock drift during a nominal synchronization interval. An interval at least as long as the centralized guard time is provisioned between two neighboring allocation intervals. One or more frames are transmitted within the allocation intervals.

Abstract translation: 本发明的实施例提供了以集中方式适应时钟漂移和保护时间的方法。 在一个实施例中，设备适于通信。 时钟使用信标或/和确认帧进行同步。 在两个相邻的分配间隔之间计算集中的保护时间。 集中保护时间在标称同步间隔期间占用时钟漂移。 至少与在两个相邻分配间隔之间提供集中保护时间的间隔。 在分配间隔内发送一个或多个帧。

公开(公告)号：US20160112956A1

公开(公告)日：2016-04-21

申请号：US14978312

申请日：2015-12-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jin-Meng Ho

IPC: H04W52/02 ,  H04W72/04 ,  H04W74/06 ,  H04W48/16

CPC classification number: H04W52/0235 ,  H04W48/16 ,  H04W52/0216 ,  H04W52/0248 ,  H04W72/0413 ,  H04W72/042 ,  H04W74/006 ,  H04W74/06 ,  Y02D70/00

Abstract: A system and method for managing power in a subnet having a hub in communication with one or more nodes is disclosed. The hub and nodes communicate using one or more non-contention access methods, such as scheduled, polled or posted access. The node may enter a sleep or hibernation state while no scheduled, polled or posted allocation interval is pending. The hibernation state allows the node to hibernate through one or more entire beacon periods. In the sleep state, the node may be asleep between any scheduled, polled and posted allocation intervals for the node or during another node's scheduled allocation interval in a current beacon period. By selecting which access scheme is in use, the node and hub can increase the node's chances to be in hibernation or sleep state and minimize power consumption.

Abstract translation: 公开了一种用于管理具有与一个或多个节点通信的集线器的子网中的电力的系统和方法。 集线器和节点使用一个或多个非争用访问方法进行通信，例如安排，轮询或发布访问。 节点可能进入睡眠或休眠状态，而没有调度，轮询或发布的分配间隔未决。 休眠状态允许节点通过一个或多个整个信标周期进行休眠。 在睡眠状态下，节点可以在节点的任何调度，轮询和发布的分配间隔之间或在当前信标周期中的另一节点的调度分配间隔期间睡眠。 通过选择使用哪种接入方案，节点和集线器可以增加节点处于休眠或休眠状态的机会，并最大限度地降低功耗。

公开(公告)号：US20140133404A1

公开(公告)日：2014-05-15

申请号：US14158341

申请日：2014-01-17

Applicant: Texas Instruments Incorporated

Inventor： Jin-Meng Ho ,  Donald P. Shaver ,  Xiaolin Lu

IPC: H04W28/06

CPC classification number: H04W24/02 ,  H04B7/04 ,  H04L1/0006 ,  H04L1/1621 ,  H04L1/1671 ,  H04L49/9057 ,  H04W28/06 ,  H04W28/065

Abstract: Apparatus and methods implement aggregation frames and allocation frames. The aggregation frames include a plurality of MSDUs or fragments thereof aggregated or otherwise combined together. An aggregation frame makes more efficient use of the wireless communication resources. The allocation frame defines a plurality of time intervals. The allocation frame specifies a pair of stations that are permitted to communicate with each other during each time interval as well as the antenna configuration to be used for the communication. This permits stations to know ahead of time when they are to communicate, with which other stations and the antenna configuration that should be used. A buffered traffic field can also be added to the frames to specify how much data remains to be transmitted following the current frame. This enables network traffic to be scheduled more effectively.

Abstract translation: 装置和方法实现聚合帧和分配帧。 聚合帧包括聚合或以其他方式组合在一起的多个MSDU或其片段。 聚合帧更有效地利用无线通信资源。 分配帧定义多个时间间隔。 分配帧指定在每个时间间隔期间允许彼此通信的一对站以及要用于通信的天线配置。 这样就可以让站台在进行通信时提前知道，哪些其他站点和应该使用的天线配置。 还可以将缓冲的业务字段添加到帧，以指定在当前帧之后剩余多少数据被发送。 这样可以更有效地安排网络流量。