Method and apparatus for synchronizing a node within an ad-hoc communication system

    公开(公告)号:GB2445134A

    公开(公告)日:2008-06-25

    申请号:GB0807316

    申请日:2008-04-22

    Applicant: MOTOROLA INC

    Abstract: A method and apparatus for synchronizing a node (200) within an ad-hoc communication system (100) is described herein. During operation all nodes periodically broadcast a synchronization beacon for other nodes to utilize for synchronization when a coordinating access point (node) is unavailable. A particular node's synchronization beacon will have an associated "tier" number that is incremented from the tier number of the beacon used to synchronize the particular node. In the absence of an access point, a node those joins the ad-hoc communication system will listen for synchronization beacons transmitted by other nodes. If synchronization beacons are heard, the node will synchronize with a beacon having a lowest tier. The node will then broadcast its own beacon having its tier number incremented from the lowest tier beacon heard.

    METHOD TO QUIET CONSECUTIVE NARROW BAND CHANNELS
    13.
    发明申请
    METHOD TO QUIET CONSECUTIVE NARROW BAND CHANNELS 审中-公开
    平稳连续窄带信道的方法

    公开(公告)号:WO2010045019A3

    公开(公告)日:2010-07-01

    申请号:PCT/US2009058781

    申请日:2009-09-29

    CPC classification number: H04W4/20

    Abstract: A method and apparatus for quieting multiple channels is provided herein. During operation, transmission activity on each channel is analyzed and a best band is identified. Once the band is chosen, a wideband transmitter is utilized to transmit simultaneous reservation messages on consecutive channels simultaneously. Because a wideband transmitter is used to transmit simultaneous reservation messages on multiple consecutive channels, the above procedure quickly quiets multiple channels while minimizing the reservation duration of all channels as a result of quieting the channels.

    Abstract translation: 本文提供了用于使多个通道静止的方法和设备。 在操作过程中,分析每个通道的传输活动并确定最佳波段。 一旦选择了频带,就使用宽带发射机同时在连续频道上发送同时预约消息。 由于宽带发射机用于在多个连续频道上同时发送预留消息,因此上述过程可快速静音多个频道,同时最大限度地减少由于静音频道而导致的所有频道的预留时间。

    COMMUNICATION SYSTEM WITH ADOPTED REMOTE IDENTITY
    15.
    发明申请
    COMMUNICATION SYSTEM WITH ADOPTED REMOTE IDENTITY 审中-公开
    采用远程识别的通信系统

    公开(公告)号:WO2005065133A2

    公开(公告)日:2005-07-21

    申请号:PCT/US2004041076

    申请日:2004-12-08

    Abstract: A method (700), and apparatus (100-600) provide for the establishment of a wireless network connection between a remote unit (110) and a wireless network (130) through a communication unit (120) acting as a relay. In one embodiment an ad-hoc connection (101) is established between the remote unit (110) and the communication unit (120). An identifier (119) associated with the remote unit (110) is adopted by the communication unit (120) for the purpose of authenticating the establishment of a wireless network connection (102) with the wireless network (130), such that a session may be established between the remote unit (110) and the wireless network (130).

    Abstract translation: 方法(700)和装置(100-600)通过充当中继站的通信单元(120)提供在远程单元(110)和无线网络(130)之间建立无线网络连接。 在一个实施例中,在远程单元(110)和通信单元(120)之间建立ad-hoc连接(101)。 为了认证与无线网络(130)的无线网络连接(102)的建立,通信单元(120)采用与远程单元(110)相关联的标识符(119),使得会话可以 在远程单元(110)和无线网络(130)之间建立。

    METHOD TO QUIET HIDDEN NODES
    16.
    发明申请
    METHOD TO QUIET HIDDEN NODES 审中-公开
    方法来隐藏节点

    公开(公告)号:WO2010045020A2

    公开(公告)日:2010-04-22

    申请号:PCT/US2009058785

    申请日:2009-09-29

    CPC classification number: H04W74/08 H04L1/1607 H04W24/00 H04W72/00

    Abstract: A method and apparatus for quieting multiple channels on unlicensed spectrum is provided herein. During operation, a cluster head (or centralized controller such as a base station) will listen to determine if channels exist without primary system traffic. A message will then be sent out by the cluster head quieting the channels. All secondary nodes in the cluster will transmit a CTS-to-self if they do not hear any traffic by any primary system node (which may be nodes out of range of the cluster head) on the channels, otherwise they send a NAK on channels not being used by the hidden nodes. If a NAK is received by the cluster head, the process repeats until no NAK has been received. After the primary system is quieted, a poll message is sent by the cluster head to nodes instructing them to send a CTS-to-Self message so that the spectrum is quieted for the period indicated in the message.

    Abstract translation: 本文提供了用于在非授权频谱上使多个信道静止的方法和设备。 在操作期间,簇头(或基站等集中控制器)将监听是否存在没有主系统业务的信道。 一条消息将由集群负责人发出,使信道静音。 如果群集中的所有辅助节点都听不到任何主要系统节点(可能是节点超出簇头范围的节点)的任何流量,则会发送CTS-to-self,否则它们将在通道上发送NAK 没有被隐藏节点使用。 如果簇头接收到NAK,则重复该过程直到没有收到NAK。 在主系统静音后,簇头向节点发送轮询消息,指示它们发送CTS-to-Self消息,以使频谱在消息中指示的时段内静音。

    COMMUNICATION SYSTEM WITH ADOPTED REMOTE IDENTITY
    20.
    发明公开
    COMMUNICATION SYSTEM WITH ADOPTED REMOTE IDENTITY 审中-公开
    有适于远程IDENTITY通信系统

    公开(公告)号:EP1695458A4

    公开(公告)日:2008-03-19

    申请号:EP04813400

    申请日:2004-12-08

    Applicant: MOTOROLA INC

    Abstract: A method ( 700 ), and apparatus ( 100 - 600 ) provide for the establishment of a wireless network connection between a remote unit ( 110 ) and a wireless network ( 130 ) through a communication unit ( 120 ) acting as a relay. In one embodiment an ad-hoc connection ( 101 ) is established between the remote unit ( 110 ) and the communication unit ( 120 ). An identifier ( 119 ) associated with the remote unit ( 110 ) is adopted by the communication unit ( 120 ) for the purpose of authenticating the establishment of a wireless network connection ( 102 ) with the wireless network ( 130 ), such that a session may be established between the remote unit ( 110 ) and the wireless network ( 130 ).

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