公开(公告)号：US20090059827A1

公开(公告)日：2009-03-05

申请号：US12203539

申请日：2008-09-03

申请人： Yonghe Liu ,  Mohan J. Kumar ,  Sajal K. Das

发明人： Yonghe Liu ,  Mohan J. Kumar ,  Sajal K. Das

IPC分类号： G08C17/00

CPC分类号： H04W76/28 ,  H04W76/27 ,  H04W84/18 ,  Y02D70/142 ,  Y02D70/166 ,  Y02D70/22

摘要： The present invention provides a system, method and apparatus for asynchronous communication in wireless sensor networks. Each sensor includes a transmitter normally operating in a sleep mode, a low power receiver having a memory, a sensing module, and a processor normally operating in a sleep mode communicably coupled to the transmitter, the low power receiver and the sensing module. Data is received via the low power receiver and stored in the memory. Whenever a wakeup time occurs, the transmitter and the processor are put in an operational mode, sensory data is obtained from the sensing module, the sensory data is processed, the received data is obtained from the low power receiver memory, the processed sensory data and the received data are transmitted via the transmitter, and the transmitter and the processor are put in the sleep mode.

摘要翻译： 本发明提供了一种用于无线传感器网络中异步通信的系统，方法和装置。 每个传感器包括通常以睡眠模式工作的发射器，具有存储器的低功率接收器，感测模块和通常以可通信地耦合到发射器，低功率接收器和感测模块的睡眠模式操作的处理器。 通过低功率接收器接收数据并存储在存储器中。 无论何时发生唤醒时间，发射机和处理器都处于操作模式，从感测模块获得感觉数据，处理感觉数据，从低功率接收机存储器获取接收到的数据，处理的感觉数据和 所接收的数据经由发送器发送，发送器和处理器进入睡眠模式。

公开(公告)号：US20050025080A1

公开(公告)日：2005-02-03

申请号：US10630437

申请日：2003-07-30

申请人： Yonghe Liu

发明人： Yonghe Liu

IPC分类号： H04L12/28

CPC分类号： H04W52/0229 ,  H04L69/323 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

摘要： A system and method is described for saving power in a wireless network, using a physical layer address filtering protocol based on a partial address subset of the complete destination MAC address. The system comprises a PHY layer filtering protocol for generating the partial address and writing the partial address into a PHY layer header portion (e.g., PLCP header) of a sending station, or reading the partial address from the PHY layer header portion upon transmission of each frame. A receiving station receives and decodes these PHY layer header portion bits, in accordance with the protocol, and compares whether the subset of bits match that of the stations' own partial address. If a station finds a match, the station then continues further decoding the frame at PHY layer and send the complete frame to the MAC layer for further processing. The stations that do not have a match will not activate their MAC layer components. Thus, the stations of the network will avoid wasting power decoding a significant portion of the complete frame of other stations of the wireless local area networks and unnecessary MAC layer processing. When group addressed, control/management frames or other such frames are detected at the sending station, the address filtering protocol may be “disabled” using a partial address containing a predetermined value (e.g., all zeros).

摘要翻译： 描述了使用基于完整目的地MAC地址的部分地址子集的物理层地址过滤协议来节省无线网络中的功率的系统和方法。 该系统包括用于产生部分地址并将部分地址写入发送站的PHY层报头部分（例如，PLCP报头）的PHY层过滤协议，或者在传送每个信息时从PHY层报头部分读取部分地址 帧。 接收站根据协议接收并解码这些PHY层报头部分比特，并且比较比特的子集是否与站自己的部分地址的比特匹配。 如果站找到匹配，则站继续在PHY层进一步解码帧，并将完整帧发送到MAC层用于进一步处理。 没有匹配的电台将不会激活其MAC层组件。 因此，网络的站将避免浪费对无线局域网的其他站的完整帧的重要部分的功率解码和不必要的MAC层处理。 当组寻址时，在发送站处检测到控制/管理帧或其他这样的帧，可以使用包含预定值（例如，全零）的部分地址来“禁用”地址过滤协议。

公开(公告)号：US07245946B2

公开(公告)日：2007-07-17

申请号：US10614367

申请日：2003-07-07

申请人： Yonghe Liu

发明人： Yonghe Liu

IPC分类号： H04M1/00

CPC分类号： H04W52/281 ,  H04W52/0232 ,  H04W52/0261 ,  H04W72/12 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

摘要： A new system and method is described, utilizing a scheduler based on a transmission power consumption calculation and prioritizing algorithm. The system utilizes the (APSD) protocol specified in the 802.11e draft for saving power in wireless local area networks. The system comprises an access point having a priority queue, one or more stations, an APSD frame comprising an association ID for identifying one of the stations and a scheduled wake-up time for the identified station. An algorithm is employed for calculating the total transmission power consumption of downlink data for the stations. The AP originates and transmits to the one or more stations the APSD frame of the scheduled activation delay time. The current data to be transmitted to each station is accessed by the algorithm to determine the total transmission power consumption to each station. A priority queue in the AP is ordered from the lowest to the highest receiving power consumption, assigning the highest priority to the lowest power consumption transmission to minimize total power consumption to the PS stations in the AP queue.

摘要翻译： 描述了一种基于传输功耗计算和优先级算法的调度器的新系统和方法。 该系统利用802.11e草案中规定的（APSD）协议来节省无线局域网中的电力。 该系统包括具有优先级队列，一个或多个站，APSD帧的接入点，APSD帧，其包括用于识别站点之一的关联ID以及所识别的站的预定的唤醒时间。 采用算法计算站点下行数据的总发射功率消耗。 AP发起并发送到一个或多个站APCS帧的预定激活延迟时间。 通过算法访问要发送到每个站的当前数据，以确定每个站的总发射功率消耗。 AP中的优先级队列从最低到最高接收功率消耗，将最高优先级分配给最低功耗传输，以最大限度地减少AP队列中PS站的总功耗。

公开(公告)号：US20050047425A1

公开(公告)日：2005-03-03

申请号：US10654161

申请日：2003-09-03

申请人： Yonghe Liu ,  Matthew Shoemake

发明人： Yonghe Liu ,  Matthew Shoemake

IPC分类号： H04L12/24 ,  H04L12/56

CPC分类号： H04L47/6215 ,  H04L47/14 ,  H04L47/50 ,  H04L47/60

摘要： System and method for scheduling messages in a digital communications system with reduced system resource requirements. A preferred embodiment comprises a plurality of traffic queues (such as traffic queue 410) used to enqueue message of differing traffic types and a first scheduler (such as priority scheduler 430). The first scheduler to select messages from the traffic queues and provide them to a plurality of priority queues (such as priority queue 455) used to enqueue messages of differing priorities. A second scheduler (such as priority scheduler 475) then selects messages for transmission based on message priority, transmission opportunity, and time to transmit.

摘要翻译： 用于在具有减少的系统资源需求的数字通信系统中调度消息的系统和方法。 优选实施例包括用于排队不同业务类型的消息的多个业务队列（例如业务队列410）和第一调度器（诸如优先级调度器430）。 第一调度器，用于从业务队列中选择消息，并将其提供给多个优先级队列（如优先级队列455），用于对不同优先级的消息进行排队。 然后，第二调度器（例如优先级调度器475）基于消息优先级，发送机会和发送时间选择用于发送的消息。

公开(公告)号：US07257095B2

公开(公告)日：2007-08-14

申请号：US10630437

申请日：2003-07-30

申请人： Yonghe Liu

发明人： Yonghe Liu

IPC分类号： G08C17/00 ,  H04B1/16 ,  H04B1/38

CPC分类号： H04W52/0229 ,  H04L69/323 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

摘要： A system and method is described for saving power in a wireless network, using a physical layer address filtering protocol based on a partial address subset of the complete destination MAC address. The system comprises a PHY layer filtering protocol for generating the partial address and writing the partial address into a PHY layer header portion (e.g., PLCP header) of a sending station, or reading the partial address from the PHY layer header portion upon transmission of each frame. A receiving station receives and decodes these PHY layer header portion bits, in accordance with the protocol, and compares whether the subset of bits match that of the stations' own partial address. If a station finds a match, the station then continues further decoding the frame at PHY layer and send the complete frame to the MAC layer for further processing. The stations that do not have a match will not activate their MAC layer components. Thus, the stations of the network will avoid wasting power decoding a significant portion of the complete frame of other stations of the wireless local area networks and unnecessary MAC layer processing. When group addressed, control/management frames or other such frames are detected at the sending station, the address filtering protocol may be “disabled” using a partial address containing a predetermined value (e.g., all zeros).

摘要翻译： 描述了使用基于完整目的地MAC地址的部分地址子集的物理层地址过滤协议来节省无线网络中的功率的系统和方法。 该系统包括用于产生部分地址并将部分地址写入发送站的PHY层报头部分（例如，PLCP报头）的PHY层过滤协议，或者在传送每个信息时从PHY层报头部分读取部分地址 帧。 接收站根据协议接收并解码这些PHY层报头部分比特，并且比较比特的子集是否与站自己的部分地址的比特匹配。 如果站找到匹配，则站继续在PHY层进一步解码帧，并将完整帧发送到MAC层用于进一步处理。 没有匹配的电台将不会激活其MAC层组件。 因此，网络的站将避免浪费对无线局域网的其他站的完整帧的重要部分的功率解码和不必要的MAC层处理。 当组寻址时，在发送站处检测到控制/管理帧或其他这样的帧，可以使用包含预定值（例如，全零）的部分地址来“禁用”地址过滤协议。

公开(公告)号：US07177791B1

公开(公告)日：2007-02-13

申请号：US10729537

申请日：2003-12-05

申请人： Carl R. Crandall ,  Craig B. Johnson ,  Mitch M. Maurer ,  Yonghe Liu

发明人： Carl R. Crandall ,  Craig B. Johnson ,  Mitch M. Maurer ,  Yonghe Liu

IPC分类号： G06F9/455

CPC分类号： G06F9/45537 ,  G06F11/3636 ,  G06F11/3652

摘要： The various embodiments of the invention relate to analyzing operations of an emulated input-output processor. Instructions native to the first type of instruction processor are emulated on a second-type instruction processor. The instruction processor emulator executes an operating system that includes instructions native to the first type of instruction processor. The operating system includes instructions that write input/output (IO) requests to the memory arrangement in response to IO functions invoked by a program. An IOP emulator that is executable on the second-type processor emulates IOP processing of IO requests from the memory arrangement. The IOP emulator maintains in the memory arrangement a first set of data structures used in processing the IO requests. State data currently contained in the data structures is stored on a retentive storage device, and in response to user input controls, the state data is read from retentive storage and displayed.

摘要翻译： 本发明的各种实施例涉及分析仿真的输入 - 输出处理器的操作。 对第一类指令处理器本地的指令在第二类指令处理器上被仿真。 指令处理器模拟器执行包括本地对第一类型的指令处理器的指令的操作系统。 操作系统包括响应于由程序调用的IO功能将输入/输出（IO）请求写入存储器装置的指令。 可在第二类型处理器上执行的IOP仿真器模拟来自存储器装置的IO请求的IOP处理。 IOP仿真器在存储器布置中维护用于处理IO请求的第一组数据结构。 当前包含在数据结构中的状态数据存储在保持性存储设备上，并且响应于用户输入控件，从保持性存储读取状态数据并显示。

公开(公告)号：US20050226270A1

公开(公告)日：2005-10-13

申请号：US10823102

申请日：2004-04-13

申请人： Yonghe Liu ,  Xiaolin Lu

发明人： Yonghe Liu ,  Xiaolin Lu

IPC分类号： H04J3/16 ,  H04L12/28 ,  H04L12/56

CPC分类号： H04W74/0816 ,  H04W48/02 ,  H04W48/08

摘要： An arrangement avoids contention on a communication medium among devices including at least a transmitter and a receiver. The arrangement involves a first portion configured to instruct a receiver to indicate that the communication medium is busy for a time period substantially longer than an actual frame transmission period being sent from the transmitter to the receiver, and a second portion configured to prohibit the receiver from transmitting on the communication medium during the time period.

摘要翻译： 一种装置避免了在包括至少发射机和接收机的设备之间的通信介质上的竞争。 该装置包括：第一部分，被配置为指示接收机指示通信介质正忙于一段时间段，该时间段实质上长于从发射机发送到接收机的实际帧传输周期;以及第二部分，被配置为禁止接收机 在该时间段内在通信介质上进行发送。

公开(公告)号：US20120269057A1

公开(公告)日：2012-10-25

申请号：US13453591

申请日：2012-04-23

申请人： Hu ZHAO ,  Yonghe Liu ,  Yuan Sun ,  Wei Wang

发明人： Hu ZHAO ,  Yonghe Liu ,  Yuan Sun ,  Wei Wang

IPC分类号： H04L12/26 ,  H04L12/24

CPC分类号： H04B1/74

摘要： The present invention discloses an active/standby switching method,which includes: sending, by a first system control unit, a detection packet to a peer network element according to a set detection cycle; when the first system control unit receives an active/standby switching instruction, stopping sending the detection packet, so that transmission link switching is triggered when the first system control unit stops sending the detection packet in a set timeout period, and simultaneously starting, by the first system control unit, a switching timer; and when it is detects that a value of the switching timer reaches a switching timing value, performing a reset operation to complete active/standby switching, where the switching timing value is greater than the timeout period. Therefore, in the situation that active/standby switching is performed, a packet loss of a service data packet is reduced, and service continuity and reliability are ensured.

摘要翻译： 本发明公开了一种主动/待机切换方法，包括：根据设定的检测周期，由第一系统控制单元向对等网元发送检测分组; 当第一系统控制单元接收到主备切换指令时，停止发送检测分组，使得当第一系统控制单元在设定的超时时段内停止发送检测分组时触发传输链路切换，同时由 第一系统控制单元，切换定时器; 并且当检测到切换定时器的值达到切换定时值时，执行复位操作以完成主动/待机切换，其中切换定时值大于超时周期。 因此，在进行主备倒换的情况下，减少了业务数据包的丢包，确保了业务连续性和可靠性。

公开(公告)号：US07680150B2

公开(公告)日：2010-03-16

申请号：US10823102

申请日：2004-04-13

申请人： Yonghe Liu ,  Xiaolin Lu

发明人： Yonghe Liu ,  Xiaolin Lu

IPC分类号： H04J3/16

CPC分类号： H04W74/0816 ,  H04W48/02 ,  H04W48/08

摘要： An arrangement avoids contention on a communication medium among devices including at least a transmitter and a receiver. The arrangement involves a first portion configured to instruct a receiver to indicate that the communication medium is busy for a time period substantially longer than an actual frame transmission period being sent from the transmitter to the receiver, and a second portion configured to prohibit the receiver from transmitting on the communication medium during the time period.

摘要翻译： 一种装置避免了在包括至少发射机和接收机的设备之间的通信介质上的竞争。 该装置包括：第一部分，被配置为指示接收机指示通信介质正忙于一段时间段，该时间段实质上长于从发射机发送到接收机的实际帧传输周期;以及第二部分，被配置为禁止接收机 在该时间段内在通信介质上进行发送。

公开(公告)号：US07133422B2

公开(公告)日：2006-11-07

申请号：US10066431

申请日：2002-01-31

申请人： Yonghe Liu ,  Matthew B. Shoemake ,  Sid B. Schrum

发明人： Yonghe Liu ,  Matthew B. Shoemake ,  Sid B. Schrum

IPC分类号： H04J3/06

CPC分类号： H04W74/085 ,  H04L12/40143 ,  H04L12/413 ,  H04L47/14 ,  H04L47/24 ,  H04W72/12

摘要： A method for implementing a plurality of backoff counters on a hardware backoff counter for use in implementing a prioritized message transmission network is presented. A message with a smallest backoff time is selected and placed into the hardware backoff counter. When the hardware backoff counter expires, the message is transmitted. Whenever the communications medium becomes busy, the backoff time for every message is updated.

摘要翻译： 提出了一种在硬件退避计数器上实现多个退避计数器的方法，用于实现优先化消息传输网络。 选择具有最小退避时间的消息并将其放置到硬件退避计数器中。 当硬件退避计数器到期时，消息被发送。 每当通信介质繁忙时，每个消息的退避时间将被更新。