Time and bandwidth scalable slot format for mobile data systems

    公开(公告)号:GB2385247A

    公开(公告)日:2003-08-13

    申请号:GB0313454

    申请日:2001-12-18

    Applicant: MOTOROLA INC

    Abstract: A scalable slot format defining positions of synchronization symbols, pilot symbols and data symbols for various numbers of sub-channels and various lengths of time in a multi-carrier communication system. An initial pattern (500) and one or more follow-on patterns (600, 700) are defined identifying positions of data symbols, synchronization symbols and pilot symbols for a first number of sub-channels corresponding to a first bandwidth. An extended pattern is constructed from the one or more follow-on patterns. The extension pattern is appended to the initial pattern to form a base pattern (810, 910, 1010), which is replicated zero or more times to form an expanded pattern (812, 910, 1015) identifying positions of data symbols, synchronization symbols and pilot symbols for an expanded number of sub-channels corresponding to a second bandwidth.

    SYSTEM AND METHOD FOR FACILITATING FAST GROUP COMMUNICATION BETWEEN SUBSCRIBERS IN A PEER-TO-PEER WIDE AREA NETWORK
    67.
    发明申请
    SYSTEM AND METHOD FOR FACILITATING FAST GROUP COMMUNICATION BETWEEN SUBSCRIBERS IN A PEER-TO-PEER WIDE AREA NETWORK 审中-公开
    促进同行广泛地域网络中用户之间快速群组通信的系统和方法

    公开(公告)号:WO2010036463A3

    公开(公告)日:2010-08-05

    申请号:PCT/US2009054718

    申请日:2009-08-24

    CPC classification number: H04W4/08 H04W8/186

    Abstract: A method of operating a peer to facilitate fast group communication between subscribers in a peer-to-peer wide area network is disclosed. In the peer-to-peer wide area network, each of the subscribers are affiliated to a talkgroup, and further registered to at least one peer within the peer-to-peer wide area network. In operation, the peer exchanges messages with other peers to determine that one or more peers listed in a talkgroup topology is still active. When the peer receives a media for a talkgroup from a subscriber affiliated to the talkgroup, the peer duplicates the media for the talkgroup, and unicasts the duplicate media to the one or more peers that are listed as active in the talkgroup topology to enable the one or more peers to deliver the media to the respectively registered subscribers affiliated to the talkgroup.

    Abstract translation: 公开了一种操作对等体以促进对等广域网中用户之间快速组通信的方法。 在对等广域网中,每个用户隶属于一个通话组,并进一步向对等广域网中的至少一个对等体注册。 在操作中,对等体与其他对等体交换消息以确定在谈话组拓扑中列出的一个或多个对等方仍然是活动的。 当对等体从与会话群组相关联的用户接收到谈话组的媒体时,对等体复制用于通话组的媒体,并将复制媒体单播到在通话组拓扑中被列为活动的一个或多个对等体,以使一个 或更多的对等体将媒体传送到与该通话组相关联的分别注册的用户。

    DISTRIBUTED DOMAIN NAME SERVICE
    69.
    发明申请
    DISTRIBUTED DOMAIN NAME SERVICE 审中-公开
    分布式域名服务

    公开(公告)号:WO2006068747A3

    公开(公告)日:2006-09-14

    申请号:PCT/US2005041966

    申请日:2005-11-18

    CPC classification number: H04L61/1511 H04L29/12018 H04L29/12066 H04L61/10

    Abstract: Distributed DNS in a wireless communication network comprising broadcasting by a first node a request message to a second node is disclosed. The request message comprises a hostname of the second node. The first node forwards the request message to the second node through intermediate nodes in the wireless communication network and the second node transmits a response message to the first node. The response message comprises a MAC address of the second node.

    Abstract translation: 公开了一种在无线通信网络中的分布式DNS,包括由第一节点向第二节点广播请求消息。 请求消息包括第二节点的主机名。 第一节点通过无线通信网络中的中间节点将请求消息转发到第二节点,并且第二节点向第一节点发送响应消息。 响应消息包括第二节点的MAC地址。

    METHOD FOR SUPPORTING A PLURALITY OF SUBSCRIBERS OPERATING ON DIFFERENT FREQUENCY BANDS USING A SINGLE ACCESS POINT
    70.
    发明申请
    METHOD FOR SUPPORTING A PLURALITY OF SUBSCRIBERS OPERATING ON DIFFERENT FREQUENCY BANDS USING A SINGLE ACCESS POINT 审中-公开
    支持使用单一访问点在不同频段上运行的多个订户的方法

    公开(公告)号:WO2005036787A2

    公开(公告)日:2005-04-21

    申请号:PCT/US2004026055

    申请日:2004-08-11

    CPC classification number: H04W88/08

    Abstract: The present invention allows a single access point ("AP"; 100) to support a plurality of devices (102, 104) operating on different frequency bands. During a first period of time, the AP initiates a contention free period at a first frequency. The AP switches from the first frequency to a second frequency, and communicates with devices operating at the second frequency. Periodically during the first period of time, the AP temporarily ceases communication with devices operating at the second frequency to initiate a contention free period at the second frequency, switch from the second frequency to the first frequency, initiate another contention free period at the first frequency, and switch from the first frequency back to the second frequency.

    Abstract translation: 本发明允许单个接入点(“AP”; 100)支持在不同频带上操作的多个设备(102,104)。 在第一时间段内,AP以第一频率发起无竞争期。 AP从第一频率切换到第二频率,并与在第二频率工作的设备进行通信。 在第一时间周期期间,AP暂时停止与在第二频率工作的设备的通信,以在第二频率发起无竞争时段,从第二频率切换到第一频率,以第一频率发起另一争用自由周期 ,并从第一频率切换回第二频率。

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