Quality of service (QOS) control mechanisms using mediation devices in an asynchronous network
    1.
    发明授权
    Quality of service (QOS) control mechanisms using mediation devices in an asynchronous network 有权
    使用异步网络中的中介设备的服务质量(QOS)控制机制

    公开(公告)号:US07440462B2

    公开(公告)日:2008-10-21

    申请号:US10443424

    申请日:2003-05-22

    IPC分类号: H04L12/28

    CPC分类号: H04L1/06 H04L25/0202

    摘要: Mediation devices in an asynchronous network of low power consumption communication devices are leveraged through the use of new protocols (2500) that analyze relevant QoS parameters (2520) in order to provide a better than best effort service in the network. These protocols invoke adaptive quality of service (QoS) mechanisms to capitalize on the strength and flexibility provided to the network by the presence of one or more MDs, as described above. Expanded functionality of the MD includes control information messaging and service differentiation for the purpose of improving QoS of the network.

    摘要翻译: 通过使用分析相关QoS参数(2520)的新协议(2500)来利用低功耗通信设备的异步网络中的中介设备,以便提供比网络中的更好的服务。 如上所述,这些协议调用自适应服务质量(QoS)机制以利用由一个或多个MD的存在而提供给网络的强度和灵活性。 MD的扩展功能包括控制信息消息传递和服务差异化,以提高网络的QoS。

    Media access control and distributed data processing using mediation devices in an asynchronous network
    2.
    发明授权
    Media access control and distributed data processing using mediation devices in an asynchronous network 失效
    使用异步网络中的中介设备的媒体访问控制和分布式数据处理

    公开(公告)号:US07492773B2

    公开(公告)日:2009-02-17

    申请号:US10443428

    申请日:2003-05-22

    IPC分类号: H04L12/56

    摘要: A low power consumption protocol for low power communication devices attached to an asynchronous network is described. In this protocol, one or more mediation devices (MDs) facilitate data processing capabilities in the network, whether in a dedicated MD or distributed MD network environment. These capabilities may be provided by the functions of packet caching, removal of replicated packets, and multiple communication types performed by the one or more MDs in accordance with a common synchronization schedule (2510) managed by the one or more MDs and communicated to other devices in the network (2530).

    摘要翻译: 描述了连接到异步网络的低功率通信设备的低功耗协议。 在该协议中,一个或多个中介设备(MD)促进网络中的数据处理能力,无论是在专用MD还是分布式MD网络环境中。 这些功能可以通过分组缓存,删除复制分组的功能以及由一个或多个MD执行的多种通信类型来提供,所述多个通信类型根据由一个或多个MD管理的通用同步调度(2510)并被传送到其他设备 在网络(2530)。

    Multi-mode receiver for frequency error mitigation
    4.
    发明授权
    Multi-mode receiver for frequency error mitigation 有权
    用于频率误差减轻的多模式接收器

    公开(公告)号:US07016661B2

    公开(公告)日:2006-03-21

    申请号:US10683098

    申请日:2003-10-10

    IPC分类号: H04B1/10

    CPC分类号: H04B1/406 H04L2027/0065

    摘要: The present invention provides a multimode receiver design for mitigation of frequency offset by selective demodulation of an input modulated signal. The receiver (103) comprises a plurality of demodulators (207). Each of the plurality of demodulators (207) has the same functionality but different receiver sensitivity versus frequency-offset mitigation characteristics. Each of these demodulators incorporates a different demodulation technique. A suitable demodulator is selected to demodulate the received signal. The choice of a suitable demodulator is based on the value of the frequency offset (305, 307).

    摘要翻译: 本发明提供一种多模接收机设计,用于通过对输入调制信号的选择性解调来减轻频偏。 接收器(103)包括多个解调器(207)。 多个解调器(207)中的每一个具有相同的功能,但是具有不同的接收机灵敏度与频偏抑制特性。 这些解调器中的每一个都包含不同的解调技术。 选择合适的解调器来解调所接收的信号。 合适的解调器的选择基于频率偏移的值(305,307)。

    Sync bursts for frequency offset compensation
    5.
    发明授权
    Sync bursts for frequency offset compensation 有权
    用于频偏补偿的同步脉冲串

    公开(公告)号:US07277457B2

    公开(公告)日:2007-10-02

    申请号:US10678416

    申请日:2003-10-03

    IPC分类号: H04J3/06

    摘要: A method (500) and system for compensation of frequency offset between a first transceiver (102) and a second transceiver (104) in wireless communication are disclosed. The compensation of the frequency offset between two or more transceivers (102, 104) is achieved using frequency synchronization bursts. These bursts contain information about the frequency offset. The frequency synchronization bursts are transmitted by the first transceiver at a range of frequencies above and below its carrier frequency (502). A second transceiver that receives at least one of these bursts (504) determines the frequency offset (504), and adjusts its frequency to match the frequency of the first transceiver (508). Thereafter, the second transceiver may enter a low power sleep mode (510) in order to reduce its power consumption. The second transceiver returns to active mode (512) just before the start of the transmission of the data packets (514).

    摘要翻译: 公开了一种用于在无线通信中补偿第一收发器(102)和第二收发器(104)之间的频率偏移的方法(500)和系统。 使用频率同步脉冲串实现两个或多个收发器(102,104)之间的频率偏移的补偿。 这些突发包含有关频率偏移的信息。 频率同步突发由第一收发器在其载波频率(502)之上和之下的频率范围内传输。 接收这些突发(504)中的至少一个的第二收发器确定频率偏移(504),并且调整其频率以匹配第一收发器(508)的频率。 此后,第二收发器可以进入低功率休眠模式(510),以便降低其功耗。 第二收发器在数据分组(514)的发送开始之前返回到活动模式(512)。

    System and method for asynchronous communications employing direct and indirect access protocols
    7.
    发明授权
    System and method for asynchronous communications employing direct and indirect access protocols 有权
    采用直接和间接访问协议的异步通信系统和方法

    公开(公告)号:US07133398B2

    公开(公告)日:2006-11-07

    申请号:US10108116

    申请日:2002-03-27

    IPC分类号: H04J3/06 H04J3/08 H04L7/00

    摘要: A communication access protocol improves the accessibility of devices operating on an asynchronous network (100), while supporting reduced power consumption. The network (100) includes a mediation device (130) for facilitating communications among network devices. Generally, each network device periodically transmits beacon signals to advertise its presence, and listens for communication signals targeted at the network device (532, 534). A device initiating communication with another operates in one of at least two operating modes in order to establish communications (536, 537, 538). In one mode, the initiating device communicates with the mediation device in order to derive timing information for the other device (537). In another mode, the initiating device listens to receive beacon signals directly from the target device in order to synchronize communications with the device (538). The selection of one of the two operating modes depends on a control parameter established for the initiating device, which in one embodiment is dependent on the urgency of communication, a maximum number of retries for using the mediation device, or the like.

    摘要翻译: 通信接入协议提高了在异步网络(100)上运行的设备的可访问性,同时支持降低功耗。 网络(100)包括用于促进网络设备之间的通信的中介设备(130)。 通常,每个网络设备周期性地发送信标信号以通告其存在,并且侦听针对网络设备(532,534)的通信信号。 启动与另一个的通信的设备以至少两种操作模式中的一种操作,以建立通信(536,537,538)。 在一种模式中,发起设备与中介设备通信,以便导出另一设备的定时信息(537)。 在另一种模式中,发起设备监听从目标设备直接接收信标信号,以便同步与设备的通信(538)。 两种操作模式之一的选择取决于为启动设备建立的控制参数,在一个实施例中,该控制参数取决于通信的紧急性,使用中介设备的最大重试次数等。

    Amplifier circuit
    8.
    发明授权
    Amplifier circuit 有权
    放大器电路

    公开(公告)号:US06184751B2

    公开(公告)日:2001-02-06

    申请号:US09135441

    申请日:1998-08-17

    IPC分类号: H03G318

    CPC分类号: H03G1/007 H03G3/18 H04B1/18

    摘要: An amplifier circuit (20) uses a series transistor (38) to couple the output of an amplifier (26) to a tuned circuit load (40) and to act as a variable resistance. In one embodiment for a multi-band receiver, multiple series transistors (38, 42) are switched for connecting different tuned circuits (40, 44) to the amplifier's output, and an activated one of the series transistors receives a gate voltage that varies its resistance so as to achieve gain control. An activated series transistors can also provide a resistance that stabilizes the amplifier (26).

    摘要翻译: 放大器电路(20)使用串联晶体管(38)将放大器(26)的输出耦合到调谐电路负载(40)并用作可变电阻。 在多频带接收机的一个实施例中,多个串联晶体管(38,42)被切换以将不同的调谐电路(40,44)连接到放大器的输出,并且串联晶体管中激活的一个接收栅极电压, 电阻以实现增益控制。 激活的串联晶体管还可以提供稳定放大器(26)的电阻。

    Apparatus for improving the battery life of a selective call receiver
    9.
    发明授权
    Apparatus for improving the battery life of a selective call receiver 失效
    用于提高选呼接收机的电池寿命的装置

    公开(公告)号:US6160490A

    公开(公告)日:2000-12-12

    申请号:US17564

    申请日:1998-02-02

    IPC分类号: G05F1/575 H02J7/00 H04B1/16

    摘要: A selective call receiver (100) operating from a battery (102), includes a battery monitor (114), a radio receiver (108), a regulator (104), a capacitor (105) coupled to the regulator and the radio receiver, and a processor (116) for controlling the foregoing elements. The processor is adapted to determine from the battery monitor an energy level of the battery, configure the regulator to supply a first limited current to the radio receiver and the capacitor for a first predetermined time when the energy level is above a predetermined threshold, or configure the regulator to supply a second limited current to the radio receiver and the capacitor for a second predetermined time when the energy level is at or below the predetermined threshold. After configuring the regulator, the processor is then adapted to enable the regulator to charge the capacitor and to power the radio receiver.

    摘要翻译: 从电池(102)操作的选呼接收机(100)包括电池监视器(114),无线电接收器(108),调节器(104),耦合到调节器的电容器(105)和无线电接收器, 以及用于控制上述要素的处理器(116)。 处理器适于从电池监视器确定电池的能量水平,配置稳压器以在能级高于预定阈值时的第一预定时间向无线电接收器和电容器提供第一有限电流,或配置 所述调节器在所述能级处于或低于所述预定阈值时,向所述无线电接收器和所述电容器提供第二限制电流达到第二预定时间。 在配置调节器之后,处理器然后适于使调节器对电容器充电并为无线电接收器供电。