Transmission of notifications for broadcast and multicast services

    公开(公告)号:US20060019641A1

    公开(公告)日:2006-01-26

    申请号:US11055921

    申请日:2005-02-10

    IPC分类号: H04Q7/38

    摘要: To transmit notification indicators for broadcast and multicast services, a base station maps the services to random sequences based on their identifiers. The base station generates the random sequence for each service based on a hash function or a PN generator and the service identifier. Each random sequence is associated with a specific location for sending a notification indicator in each frame. The locations for the notification indicators for each random sequence are randomized with respect to the locations for the notification indicators for each remaining random sequence. This randomness characteristic reduces the likelihood of false alarm. For each service, the base station sets the notification indicators to the same notification value in each modification period. The base station transmits the notification indicators for each service at the random locations determined by the random sequence for the service.

    Method and apparatus providing improved position estimate based on an initial coarse position estimate
    7.
    发明授权
    Method and apparatus providing improved position estimate based on an initial coarse position estimate 有权
    基于初始粗略位置估计提供改进的位置估计的方法和装置

    公开(公告)号:US06570530B2

    公开(公告)日:2003-05-27

    申请号:US09878934

    申请日:2001-06-11

    IPC分类号: G01S514

    CPC分类号: G01S19/40

    摘要: Techniques for determining the location of a device based on an initial coarse position estimate for the device, which is derived based on initial (less accurate) estimates of the position of a plurality of transmitters. In one method, the coarse position estimate for the device and revised (more accurate) position estimates for the transmitters are received. A revised position estimate for the device is initialized (e.g., to the coarse position estimate). An update vector is next computed based on the initial and revised position estimates for the device and the initial and revised position estimates for the transmitters. The revised position estimate for the device is then updated based on the update vector. The computation for the update vector and the updating of the revised position estimate for the device can be repeated a number of times to achieve a more and more accurate estimate.

    摘要翻译: 用于基于针对多个发射机的位置的初始(较不准确的)估计导出的用于设备的初始粗略位置估计来确定设备的位置的技术。 在一种方法中,接收装置的粗略位置估计和发射机的修正(更精确)位置估计。 初始化装置的修正位置估计(例如,到粗略位置估计)。 接下来根据装置的初始和修正的位置估计以及发射机的初始和修正的位置估计来计算更新向量。 然后基于更新向量来更新设备的修改的位置估计。 更新向量的计算和设备的修订位置估计的更新可以重复多次以实现越来越准确的估计。

    Method and apparatus for ciphering and re-ordering packets in a wireless communication system
    8.
    发明申请
    Method and apparatus for ciphering and re-ordering packets in a wireless communication system 有权
    用于在无线通信系统中加密和重新排序分组的方法和装置

    公开(公告)号:US20070041382A1

    公开(公告)日:2007-02-22

    申请号:US11411574

    申请日:2006-04-25

    IPC分类号: H04L12/56

    摘要: Techniques for performing ciphering and re-ordering using a single full sequence number are described. A transmitter ciphers input packets to obtain ciphered packets, with each input packet being ciphered with a full sequence number. The transmitter generates output packets for the ciphered packets, with each output packet including a partial sequence number used for re-ordering and derived from the full sequence number. The full sequence number may be incremented for each input packet or each byte of each packet. The partial sequence number may be used as a sequence number for RLC and may be used for re-ordering, duplicate detection, error correction, and/or other functions. A receiver performs the complementary processing, re-orders received packets based on the partial sequence number included in each packet, and deciphers the received packets using the partial sequence number included in each received packet.

    摘要翻译: 描述使用单个完整序列号进行加密和重新排序的技术。 发射机对输入分组进行加密以获得加密分组,每个输入分组以全序列号加密。 发射机产生加密分组的输出分组,每个输出分组包括用于重新排序并从全序列号导出的部分序列号。 每个输入分组或每个分组的每个字节可以增加完整序列号。 部分序列号可以用作RLC的序列号,并且可以用于重新排序,重复检测,纠错和/或其他功能。 接收机执行补充处理,基于每个分组中包括的部分序列号对接收到的分组进行重新排序,并且使用包含在每个接收分组中的部分序列号对接收到的分组进行解密。

    Method and apparatus for allocating data streams onto a single channel
    9.
    发明申请
    Method and apparatus for allocating data streams onto a single channel 有权
    将数据流分配到单个信道上的方法和装置

    公开(公告)号:US20050128986A1

    公开(公告)日:2005-06-16

    申请号:US11040857

    申请日:2005-01-21

    摘要: A method and system that enables multiplexing a plurality of data streams onto one data stream based on data stream priorities and available transport frame combinations (TFCs) is disclosed. A mobile station has applications that produce separate data streams. Example applications include voice, signaling, E-mail and web applications. The data streams are combined by a multiplexer module into one data stream called the transport stream. The transport stream is sent over the reverse link to base station transceivers (BTS). The multiplexer module multiplexes the data streams onto the transport stream according to their priorities and the available TFCs.

    摘要翻译: 公开了一种能够基于数据流优先级和可用传输帧组合(TFC)将多个数据流复用到一个数据流上的方法和系统。 移动台具有产生单独数据流的应用。 示例应用包括语音,信令,电子邮件和Web应用程序。 数据流由多路复用器模块组合成一个称为传输流的数据流。 传输流通过反向链路发送到基站收发器(BTS)。 多路复用器模块根据它们的优先级和可用的TFC将数据流复用到传输流上。