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    Apparatus and method for performing initial cell search in a wireless communications system
    1.
    发明公开
    Apparatus and method for performing initial cell search in a wireless communications system 审中-公开
    装置和方法用于在无线通信系统中执行初始小区搜索

    公开(公告)号：EP1826933A3

    公开(公告)日：2007-09-05

    申请号：EP07102953.2

    申请日：2002-04-15

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： Chitrapu, Prabhakar, R. ,  Guccione, Louis, J. ,  Bednarz, Andrew, F.

    IPC分类号： H04J3/06 ,  H04B1/707 ,  H04B7/26

    CPC分类号： H04B1/7083 ,  H04B1/70735

    摘要： The system and method of the present invention establishes a communication link (Fig. 3) between a user equipment (4) and a base station (2) in a communication system having a plurality of base stations which each transmit a common primary synchronization code (PSC) in a primary synchronization channel in conjunction with a base station specific secondary synchronization code within a system frame, which receives with the UE an input signal including the PSC and SSC from at least one of the base stations. The UE analyzes the input signal to detect any received PSCs within a selected time period which has duration corresponding to the length of a system frame and determining a relative location of a strongest PSC (26) within the selected time period. The input signal is then processed to remove the PSC from at least the determined PSC location. A secondary synchronization code (SSC) is then detected for the determined location from the processed signal. The communication link is then established using the detected SSCs.

    Apparatus and method for performing initial cell search in a wireless communications system
    2.
    发明公开
    Apparatus and method for performing initial cell search in a wireless communications system 审中-公开
    装置和方法用于在无线通信系统中执行初始小区搜索

    公开(公告)号：EP1826933A2

    公开(公告)日：2007-08-29

    申请号：EP07102953.2

    申请日：2002-04-15

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： Chitrapu, Prabhakar, R. ,  Guccione, Louis, J. ,  Bednarz, Andrew, F.

    IPC分类号： H04J3/06 ,  H04B1/707 ,  H04B7/26

    CPC分类号： H04B1/7083 ,  H04B1/70735

    摘要： The system and method of the present invention establishes a communication link (Fig. 3) between a user equipment (4) and a base station (2) in a communication system having a plurality of base stations which each transmit a common primary synchronization code (PSC) in a primary synchronization channel in conjunction with a base station specific secondary synchronization code within a system frame (Fig. 2), which receives with the UE an input signal including the PSC and SSC from at least one of the base stations. The UE analyzes the input signal to detect any received PSCs within a selected time period which has duration corresponding to the length of a system frame and determining a relative location of a strongest PSC (26) within the selected time period. The input signal is then processed to remove the PSC from at least the determined PSC location. A secondary synchronization code (SSC) is then detected for the determined location from the processed signal. The communication link is then established using the detected SSCs.

    摘要翻译： 本发明的系统和方法建立在用户设备（4）和一个基站（2）（具有其中每个基站发送的公共的主同步码的多个A通信系统之间的通信链路（图3） PSC）中与系统帧内的基站特定的次同步码，其与UE接收到的输入信号包括来自所述基站中的至少一个的PSC和SSC连词主同步信道。 所述UE分析输入信号到具有持续时间对应于系统帧和确定性采矿所选择的时间周期内最强的PSC（26）的相对位置的长度，在选定的时间周期内检测到任何接收到的PSC。 然后将输入信号进行处理，以从至少所述确定性开采PSC位置删除PSC。 辅同步码（SSC），然后用于从所述处理后的信号的确定性开采位置检测。 然后，将通信链路使用检测到的SSC确定。

    Method and apparatus for providing piggybacked positive acknowledgement/negative acknowledgement field indicator and a polling indicator
    8.
    发明公开
    Method and apparatus for providing piggybacked positive acknowledgement/negative acknowledgement field indicator and a polling indicator 审中-公开
    用于提供正反馈/负反馈和轮询指示符捎带字段指示器的方法和设备

    公开(公告)号：EP2573971A1

    公开(公告)日：2013-03-27

    申请号：EP12193033.3

    申请日：2008-05-07

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： Chitrapu, Prabhakar, R. ,  Aghili, Behrouz ,  Rudolf, Marian ,  Dick, Stephen G.

    IPC分类号： H04L1/16

    CPC分类号： H04L1/1664 ,  H04L1/1685 ,  H04L1/1867 ,  H04L1/1896

    摘要： A method and apparatus of providing a piggybacked positive acknowledgement/negative acknowledgement (ACKINACK) (PAN) field indicator (PANI) and a polling indicator are disclosed. A combined field of a PANI bit, a relative reserved block period (RRBP) bit and an EGPRS supplementary polling (ESIP) field may indicate a polling scheme and a presence of a PAN field. Alternatively, the presence of the PAN field in the data block may be indicated by using a specific training sequence. Alternatively, a forward error correction (FEC) coding may be performed on the data block including the header, and the presence of the PAN field may be indicated by scrambling the encoded bits corresponding the header with a specific scrambling sequence. Alternatively, a header check sequence (HCS) may be generated and the presence of the PAN field is indicated by mixing a predetermined sequence with the HCS.

    摘要翻译： 提供捎带肯定确认/否定确认（ACKINACK）（PAN）字段指示符（PANI）和轮询指示的方法和装置游离缺失光盘。 一个PANI位，一个相对保留块周期（RRBP）位和到EGPRS补充轮询（ESIP）字段可以指示轮询方案和PAN字段的存在的组合场。 或者，在数据块中的PAN字段的存在可以通过使用特定的锻炼序列来指示。 可替代地，前向纠错（FEC）编码可以对数据块包括标题来执行，并且PAN字段的存在可以通过加扰已编码的比特在相应的含有特定的加扰序列的标题来指示。 可替代地，一个报头校验序列（HCS）可以产生和PAN字段的存在是通过混合与HCS的预定序列中所示。

    Flow-based selective reverse tunneling in wireless local area network (WLAN)-cellular systems
    9.
    发明公开
    Flow-based selective reverse tunneling in wireless local area network (WLAN)-cellular systems 审中-公开
    无线局域网中的反向隧道技术 - Zellularsystemen

    公开(公告)号：EP1705866A1

    公开(公告)日：2006-09-27

    申请号：EP06117308.4

    申请日：2003-05-22

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： Chitrapu, Prabhakar, R.

    IPC分类号： H04L29/06 ,  H04Q7/24 ,  H04L12/28

    CPC分类号： H04W40/02 ,  H04L45/30 ,  H04L45/38 ,  H04W84/04 ,  H04W84/12

    摘要： At least one subscriber is subscribed to both a cellular network (30) and a wireless local area network WLAN (22). The subscriber (20) is located in the WLAN. Flows of the subscriber are provided for transfer. Each flow comprises packets. For each flow a determination is made on whether that flow is to be routed directly through the WLAN or through both the WLAN and cellular network. Each flow's packets are routed based on that flow's routing determination.

    摘要翻译： 至少一个用户订阅蜂窝网络（30）和无线局域网WLAN（22）。 订户（20）位于WLAN中。 用户的流量被提供用于传输。 每个流包括数据包。 对于每个流程，确定该流是直接通过WLAN路由还是通过WLAN和蜂窝网络路由。 每个流的数据包根据该流的路由确定进行路由。