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    Recovery from handoff error due to false detection of handoff completion signal at access terminal
    1.
    发明授权
    Recovery from handoff error due to false detection of handoff completion signal at access terminal 有权
    由于接入终端的切换完成信号的错误检测，从切换错误中恢复

    公开(公告)号：US09094173B2

    公开(公告)日：2015-07-28

    申请号：US12144969

    申请日：2008-06-24

    申请人： Rajat Prakash ,  Aamod Khandekar ,  Alexei Gorokhov ,  Mohammad J. Borran (Jaber)

    发明人： Rajat Prakash ,  Aamod Khandekar ,  Alexei Gorokhov ,  Mohammad J. Borran (Jaber)

    IPC分类号： H04W4/00 ,  H04L1/00 ,  H04W36/00 ,  H04L1/16 ,  H04L1/18 ,  H04W28/04

    CPC分类号： H04L1/0061 ,  H04L1/1671 ,  H04L1/1829 ,  H04W28/04 ,  H04W36/0055

    摘要： Systems and methodologies are described that facilitate recovering from error due to false detection of completion signals at an access terminal. An access terminal specific request signal can be sent to a target base station to initiate handoff or semi-connected state exit. A completion signal can be transferred in response to the access terminal specific request signal. To mitigate errors stemming from false detection of the completion signal at the access terminal, forward link and reverse link confirmation signals can be transferred to confirm successful handoff or connected state re-entry completion. For example, the access terminal can determine handoff or re-entry to be successful when a forward link confirmation signal is detected prior to expiration of a timer. Moreover, the forward link and reverse link confirmation signals can each include more CRC bits as compared to a number of CRC bits included in the completion signal.

    摘要翻译： 描述了系统和方法，其便于由于在接入终端处的完成信号的错误检测而从错误中恢复。 可以将接入终端特定请求信号发送到目标基站以启动切换或半连接状态退出。 可以响应于接入终端特定请求信号来传送完成信号。 为了减轻由接入终端的完成信号的错误检测引起的错误，可以传送前向链路和反向链路确认信号，以确认成功切换或连接状态重新进入完成。 例如，当在定时器期满之前检测到前向链路确认信号时，接入终端可以确定切换或重新进入成功。 此外，与包括在完成信号中的CRC比特数相比，前向链路和反向链路确认信号可以各自包括更多的CRC比特。

    Pilot transmission in a wireless communication system
    2.
    发明授权
    Pilot transmission in a wireless communication system 有权
    无线通信系统中的导频传输

    公开(公告)号：US08457315B2

    公开(公告)日：2013-06-04

    申请号：US11968636

    申请日：2008-01-02

    申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Mohammad J. Borran ,  Rajat Prakash

    发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Mohammad J. Borran ,  Rajat Prakash

    IPC分类号： H04L29/06

    CPC分类号： H04B1/7156 ,  H04J13/10 ,  H04L27/261 ,  H04L27/2613

    摘要： Techniques for transmitting pilot and traffic data are described. In one aspect, a terminal may scramble its pilot with a scrambling sequence generated based on a set of static and dynamic parameters. The static parameter(s) have fixed value for an entire communication session for the terminal. The dynamic parameter(s) have variable value during the communication session. The terminal may generate a scrambling sequence by hashing the set of parameters to obtain a seed and initializing a PN generator with the seed. The terminal may then generate the pilot based on the scrambling sequence. In another aspect, the terminal may use different scrambling sequences for pilot and traffic data. A first scrambling sequence may be generated based on a first set of parameters and used to generate the pilot. A second scrambling sequence may be generated based on a second set of parameters and used to scramble traffic data.

    摘要翻译： 描述用于发送导频和业务数据的技术。 在一个方面，终端可以使用基于一组静态和动态参数产生的加扰序列来加扰其导频。 静态参数对于终端的整个通信会话具有固定值。 动态参数在通信会话期间具有变量值。 终端可以通过散列参数集来获得种子并用种子初始化PN发生器来产生加扰序列。 然后终端可以基于加扰序列生成导频。 在另一方面，终端可以对导频和业务数据使用不同的加扰序列。 可以基于第一组参数生成第一加扰序列，并且用于产生导频。 可以基于第二组参数生成第二加扰序列，并用于加扰业务数据。

    RECOVERY FROM HANDOFF ERROR DUE TO FALSE DETECTION OF HANDOFF COMPLETION SIGNAL AT ACCESS TERMINAL
    7.
    发明申请
    RECOVERY FROM HANDOFF ERROR DUE TO FALSE DETECTION OF HANDOFF COMPLETION SIGNAL AT ACCESS TERMINAL 有权
    由于在接入终端处的手动完成信号的错误检测而从手动错误中恢复

    公开(公告)号：US20090029706A1

    公开(公告)日：2009-01-29

    申请号：US12144969

    申请日：2008-06-24

    申请人： Rajat Prakash ,  Aamod Khandekar ,  Alexei Gorokhov ,  Mohammad J. Borran (Jaber)

    发明人： Rajat Prakash ,  Aamod Khandekar ,  Alexei Gorokhov ,  Mohammad J. Borran (Jaber)

    IPC分类号： H04W36/00

    CPC分类号： H04L1/0061 ,  H04L1/1671 ,  H04L1/1829 ,  H04W28/04 ,  H04W36/0055

    摘要： Systems and methodologies are described that facilitate recovering from error due to false detection of completion signals at an access terminal. An access terminal specific request signal can be sent to a target base station to initiate handoff or semi-connected state exit. A completion signal can be transferred in response to the access terminal specific request signal. To mitigate errors stemming from false detection of the completion signal at the access terminal, forward link and reverse link confirmation signals can be transferred to confirm successful handoff or connected state re-entry completion. For example, the access terminal can determine handoff or re-entry to be successful when a forward link confirmation signal is detected prior to expiration of a timer. Moreover, the forward link and reverse link confirmation signals can each include more CRC bits as compared to a number of CRC bits included in the completion signal.

    摘要翻译： 描述了系统和方法，其便于由于在接入终端处的完成信号的错误检测而从错误中恢复。 可以将接入终端特定请求信号发送到目标基站以启动切换或半连接状态退出。 可以响应于接入终端特定请求信号来传送完成信号。 为了减轻由接入终端的完成信号的错误检测引起的错误，可以传送前向链路和反向链路确认信号，以确认成功切换或连接状态重新进入完成。 例如，当在定时器期满之前检测到前向链路确认信号时，接入终端可以确定切换或重新进入成功。 此外，与包括在完成信号中的CRC比特数相比，前向链路和反向链路确认信号可以各自包括更多的CRC比特。

    CARRIER SWITCHING IN A MULTI-CARRIER WIRELESS COMMUNICATION NETWORK
    8.
    发明申请
    CARRIER SWITCHING IN A MULTI-CARRIER WIRELESS COMMUNICATION NETWORK 有权
    多载波无线通信网络中的载波切换

    公开(公告)号：US20080316969A1

    公开(公告)日：2008-12-25

    申请号：US12119979

    申请日：2008-05-13

    申请人： Rajat Prakash ,  Aamod Khandekar ,  Alexei Gorokhov

    发明人： Rajat Prakash ,  Aamod Khandekar ,  Alexei Gorokhov

    IPC分类号： H04Q7/00

    CPC分类号： H04W36/30

    摘要： Techniques for performing carrier switching in a multi-carrier access network are described. A terminal may be assigned to a carrier among multiple carriers having different transmit power levels, e.g., by the access network during system access or handoff. The terminal may receive a switch threshold from the access network. The terminal may periodically measure the received signal strength of the assigned carrier and may compare the received signal strength against the switch threshold. The terminal may refrain from switching to a stronger carrier if the received signal strength exceeds the switch threshold and may switch to the stronger carrier if the received signal strength is below the switch threshold. This carrier switching scheme may prevent the terminal from switching to the strongest carrier when the assigned carrier can provide satisfactory performance. The access network may also switch the terminal to another carrier by sending a carrier switch message.

    摘要翻译： 描述用于在多载波接入网络中执行载波切换的技术。 例如在系统接入或切换期间由接入网络将终端分配给具有不同发射功率电平的多个载波之中的载波。 终端可以从接入网接收切换阈值。 终端可以周期性地测量所分配的载波的接收信号强度，并且可以将接收到的信号强度与开关阈值进行比较。 如果接收到的信号强度超过开关阈值，则终端可以避免切换到更强的载波，并且如果接收到的信号强度低于开关阈值，则可以切换到更强的载波。 当分配的载波可以提供令人满意的性能时，该载波切换方案可以防止终端切换到最强的载波。 接入网络还可以通过发送载波​​切换消息来将终端切换到另一载波。

    METHODS AND APPARATUS FOR MEASURING, COMMUNICATING AND/OR USING INTERFERENCE INFORMATION
    9.
    发明申请
    METHODS AND APPARATUS FOR MEASURING, COMMUNICATING AND/OR USING INTERFERENCE INFORMATION 有权
    用于测量，通信和/或使用干扰信息的方法和装置

    公开(公告)号：US20080043879A1

    公开(公告)日：2008-02-21

    申请号：US11766353

    申请日：2007-06-21

    申请人： Alexei Gorokhov ,  Aamod Khandekar ,  Ravi Palanki ,  Rajat Prakash

    发明人： Alexei Gorokhov ,  Aamod Khandekar ,  Ravi Palanki ,  Rajat Prakash

    IPC分类号： H04L25/03

    CPC分类号： H04L27/2613 ,  H04B17/24 ,  H04B17/345 ,  H04B17/382 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0091 ,  H04W16/14 ,  H04W52/08 ,  H04W52/24 ,  H04W52/243 ,  H04W52/247 ,  H04W72/082

    摘要： Wireless communications methods and apparatus are described. A communications apparatus, e.g., a base station, measures interference information, e.g., other sector interference information. The communications apparatus generates a preamble which includes a plurality of pilot symbols and at least one of the pilot symbols includes interference information. In some embodiments, the preamble is part of a superframe structure, e.g., a recurring superframe structure, including the preamble and a plurality of frames, at least some of the frames used to convey traffic data. The communications apparatus transmits the preamble, thus broadcasting the interference information to access terminals in the vicinity. An access terminal receives the preamble including a plurality of pilot signals, at least one of the pilot signals including interference information. The access terminal recovers the interference information from the received preamble and controls signal transmission based on the recovered interference information.

    摘要翻译： 描述了无线通信方法和装置。 通信装置，例如基站，测量干扰信息，例如其他扇区干扰信息。 通信装置生成包括多个导频符号的前导码，并且导频符号中的至少一个包括干扰信息。 在一些实施例中，前导码是超帧结构的一部分，例如，包括前导码和多个帧的循环超帧结构，用于传送业务数据的至少一些帧。 通信装置发送前导码，从而将干扰信息广播到附近的接入终端。 接入终端接收包括多个导频信号的前导码，所述导频信号中的至少一个包括干扰信息。 接入终端从接收到的前导码中恢复干扰信息，并根据恢复的干扰信息控制信号传输。

    Handoff selection for wireless communication systems
    10.
    发明申请
    Handoff selection for wireless communication systems 有权
    无线通信系统的切换选择

    公开(公告)号：US20070287462A1

    公开(公告)日：2007-12-13

    申请号：US11761790

    申请日：2007-06-12

    申请人： Alexei Gorokhov ,  Aamod Khandekar ,  Tamer Kadous ,  Mohammad Borran ,  Rajat Prakash

    发明人： Alexei Gorokhov ,  Aamod Khandekar ,  Tamer Kadous ,  Mohammad Borran ,  Rajat Prakash

    IPC分类号： H04Q7/20

    CPC分类号： H04W36/30 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2613 ,  H04W36/36

    摘要： Techniques for selecting serving sectors and performing handoff for a terminal on the forward and reverse links are described. The terminal may obtain pilot measurements for pilots transmitted on the forward link and may update an active set based on the pilot measurements. The terminal may send a transmission (e.g., for pilot, signaling, etc.) on the reverse link and may receive channel quality information indicative of reverse link channel quality for the terminal at multiple sectors in the active set. The transmission may include pilot, and the channel quality information from each sector may include a pilot carrier-over-thermal ratio (pCoT) determined by that sector based on the pilot. The terminal may select a serving sector based on the channel quality information, interference information, and/or other information and may send a request for handoff (e.g., via a signaling message an/or an access probe) to the selected serving sector.

    摘要翻译： 描述用于选择服务扇区并对前向和反向链路上的终端执行切换的技术。 终端可以获得在前向链路上发送的导频的导频测量，并且可以基于导频测量来更新活动集。 终端可以在反向链路上发送传输（例如，用于导频，信令等），并且可以在活动集中的多个扇区处接收指示终端的反向链路信道质量的信道质量信息。 传输可以包括导频，并且来自每个扇区的信道质量信息可以包括由该扇区基于导频确定的导频载波热传输比（pCoT）。 终端可以基于信道质量信息，干扰信息和/或其他信息来选择服务扇区，并且可以向所选择的服务扇区发送切换请求（例如，经由信令消息，或访问探测器）。