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    • 24. 发明申请
    • SFN AND SIGNALING MECHANISMS FOR SOFTER HANDOFF GROUPS
    • SFN和信号手机组的信号机制
    • US20080096569A1
    • 2008-04-24
    • US11852964
    • 2007-09-10
    • Aamod KhandekarAlexei GorokhovRajat Prakash
    • Aamod KhandekarAlexei GorokhovRajat Prakash
    • H04Q7/20
    • H04W36/18H04W36/30
    • Softer handoff groups are provided utilizing fractional frequency reuse set, which can be managed by a single master sector that is part of the group. The group can based on handoff rules that can include a group indication by an access point or a group request by an access terminal. A terminal is provided functionality to select a softer handoff group, which can be indicated by an active set update. An access point can discontinue serving terminals by groups by reducing an active set size to one. Diversity can be provided such that if a transmission from one sector fades, the other sector can provide the transmission, mitigating loss of data. Thus, robustness against inadequate channel conditions can be obtained.
    • 使用分数频率复用集提供更软的切换组,该组可以由作为组的一部分的单个主扇区来管理。 该组可以基于切换规则,其可以包括接入点的组指示或接入终端的组请求。 提供终端用于选择较软的越区切换组,其可以由活动集更新来指示。 接入点可以通过将活动集合大小减小到一个来终止服务终端。 可以提供分集,使得如果来自一个扇区的传输衰落,则另一扇区可以提供传输,减轻数据丢失。 因此,可以获得针对不充分的信道条件的鲁棒性。
    • 26. 发明授权
    • Pilot transmission in a wireless communication system
    • 无线通信系统中的导频传输
    • US08457315B2
    • 2013-06-04
    • US11968636
    • 2008-01-02
    • Aamod KhandekarAlexei GorokhovMohammad J. BorranRajat Prakash
    • Aamod KhandekarAlexei GorokhovMohammad J. BorranRajat Prakash
    • H04L29/06
    • H04B1/7156H04J13/10H04L27/261H04L27/2613
    • 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.
    • 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。
    • 30. 发明申请
    • RECOVERY FROM HANDOFF ERROR DUE TO FALSE DETECTION OF HANDOFF COMPLETION SIGNAL AT ACCESS TERMINAL
    • 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
    • US20090029706A1
    • 2009-01-29
    • US12144969
    • 2008-06-24
    • Rajat PrakashAamod KhandekarAlexei GorokhovMohammad J. Borran (Jaber)
    • Rajat PrakashAamod KhandekarAlexei GorokhovMohammad J. Borran (Jaber)
    • H04W36/00
    • H04L1/0061H04L1/1671H04L1/1829H04W28/04H04W36/0055
    • 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.
    • 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。