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。

公开(公告)号：US08918112B2

公开(公告)日：2014-12-23

申请号：US12260861

申请日：2008-10-29

申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Ravi Palanki ,  Ashwin Sampath ,  Avneesh Agrawal

发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Ravi Palanki ,  Ashwin Sampath ,  Avneesh Agrawal

IPC分类号： H04W72/00 ,  H04W48/08 ,  H04W8/26 ,  H04W36/30 ,  H04W48/16

CPC分类号： H04W48/08 ,  H04W8/26 ,  H04W36/30 ,  H04W48/16

摘要： Providing for management of wireless communications in a heterogeneous wireless access point (AP) environment is described herein. By way of example, system data of an over-the-air message can be configured to include information identifying a distinct type of transmitting base station. In some aspects, the information can include an access type of the base station and/or a sector ID for distinguishing the base station among large numbers of other base stations. According to other aspects, the information can include wireless channel resources designated for a particular type of base station, or blanked by the transmitting base station, to facilitate interference reduction on such resources. By employing aspects of wireless communication management disclosed herein, efficient and reliable communication can be affected in large heterogeneous AP networks.

摘要翻译： 本文描述了在异构无线接入点（AP）环境中的无线通信的管理。 作为示例，空中消息的系统数据可以被配置为包括标识不同类型的发送基站的信息。 在一些方面，信息可以包括基站的接入类型和/或用于区分大量其他基站中的基站的扇区ID。 根据其他方面，信息可以包括为特定类型的基站指定的无线信道资源，或者由发射基站消隐，以便于对这些资源进行干扰减少。 通过采用这里公开的无线通信管理的方面，可以在大型异构AP网络中影响高效可靠的通信。

公开(公告)号：US08825046B2

公开(公告)日：2014-09-02

申请号：US12261998

申请日：2008-10-30

申请人： Mohammad J. Borran ,  Aamod Khandekar ,  Naga Bhushan ,  Ashwin Sampath ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Ravi Palanki ,  Gavin B. Horn

发明人： Mohammad J. Borran ,  Aamod Khandekar ,  Naga Bhushan ,  Ashwin Sampath ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Ravi Palanki ,  Gavin B. Horn

IPC分类号： H04W4/00 ,  H04B7/00

CPC分类号： H04W72/048 ,  H04W52/242 ,  H04W52/243 ,  H04W52/28 ,  H04W52/325 ,  H04W52/34

摘要： Techniques for transmitting data with short-term interference mitigation in a wireless communication system are described. In one design, a serving base station may send a message to a terminal to trigger short-term interference mitigation. In response, the terminal may send a message to request at least one interfering base station to reduce interference on at least one resource. Each interfering base station may determine a transmit power level to be used for the at least one resource and may send a pilot at this transmit power level. The terminal may estimate the channel quality of the at least one resource based on at least one pilot received from the at least one interfering base station. The terminal may send information indicative of the estimated channel quality to the serving base station. The serving base station may send a data transmission on the at least one resource to the terminal.

摘要翻译： 描述了在无线通信系统中发送具有短期干扰抑制的数据的技术。 在一种设计中，服务基站可以向终端发送消息以触发短期干扰减轻。 作为响应，终端可以发送消息以请求至少一个干扰基站以减少对至少一个资源的干扰。 每个干扰基站可以确定要用于至少一个资源的发射功率电平，并且可以以该发射功率电平发送导频。 终端可以基于从至少一个干扰基站接收的至少一个导频来估计至少一个资源的信道质量。 终端可以向服务基站发送表示估计的信道质量的信息。 服务基站可以向终端发送至少一个资源上的数据传输。

公开(公告)号：US08761032B2

公开(公告)日：2014-06-24

申请号：US12163818

申请日：2008-06-27

申请人： Dexu Lin ,  Alexei Gorokhov ,  Aamod Khandekar ,  Ravi Palanki

发明人： Dexu Lin ,  Alexei Gorokhov ,  Aamod Khandekar ,  Ravi Palanki

IPC分类号： H04L12/26 ,  H04W24/02 ,  H04L1/00

CPC分类号： H04W24/02 ,  H04L1/0004 ,  H04L1/0072 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0053 ,  H04W72/04 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146

摘要： Systems and methodologies are described that facilitate wireless network transmitters blanking or reducing power on portions of bandwidth reserved for control information transmission. This mitigates interference from disparate transmitters. Furthermore, the control information portion can be divided into a plurality of OFDM tiles that are reusable by transmitters for transmitting the control information. In this regard, interference between transmitters is additionally mitigated as the transmitters can multiplex the control information over a plurality of tiles increasing the chance that at least a portion of the tiles are not interfered. The control information can be decoded by the receivers from the portion of tiles with a low probability of interference.

摘要翻译： 描述了系统和方法，其促进无线网络发射机消隐或减少为控制信息传输预留的带宽部分上的功率。 这减轻了不同发射机的干扰。 此外，控制信息部分可以被划分为多个OFDM瓦片，其可由用于发送控制信息的发射机重用。 在这方面，发射机之间的干扰额外减轻，因为发射机可以在多个瓦片上复用控制信息，从而增加至少一部分瓦片不被干扰的机会。 控制信息可以由来自具有低干扰概率的瓦片部分的接收器解码。

公开(公告)号：US08670777B2

公开(公告)日：2014-03-11

申请号：US11849595

申请日：2007-09-04

申请人： Mohammad Jaber Borran ,  Alexei Gorokhov ,  Aamod Khandekar ,  Tingfang Ji ,  Arumugam Chendamarai Kannan

发明人： Mohammad Jaber Borran ,  Alexei Gorokhov ,  Aamod Khandekar ,  Tingfang Ji ,  Arumugam Chendamarai Kannan

IPC分类号： H04W72/00

CPC分类号： H04W72/082

摘要： Systems and methods that facilitate management of interference and communication resources are provided. A differential approach is devised in which other-sector interference (OSI) and communication resources are managed by adjusting an offset (delta) value associated with the resources in response to receiving an indication of other-sector interference. An OSI indication can be issued based on a short and a long time scale, and effective interference metrics over time-frequency resources. The adjusted delta value is communicated to a serving access point, which reassigns communication resources in order to mitigate other-sector interference.

摘要翻译： 提供了便于管理干扰和通信资源的系统和方法。 设计出差分方法，其中响应于接收到其他扇区干扰的指示，通过调整与资源相关联的偏移量（delta）值来管理其他扇区干扰（OSI）和通信资源。 可以基于短时间和长时间尺度发出OSI指示，并且可以根据时间 - 频率资源发出有效的干扰度量。 经调整的增量值被传送到服务接入点，服务接入点重新分配通信资源以便减轻其他扇区干扰。

公开(公告)号：US08630241B2

公开(公告)日：2014-01-14

申请号：US12441109

申请日：2007-10-23

申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Michael Mao Wang

发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Michael Mao Wang

IPC分类号： H04J4/00

CPC分类号： H04L27/261 ,  H04L5/023 ,  H04L5/14 ,  H04L5/16

摘要： Superframe preamble structures for wireless communication systems are provided. The preamble can include system determination information, which can improve acquisition performance. The superframe structures can allow efficient determination of flexible parameters that determine preamble structure. The superframe structures can also facilitate quick paging capacity to scale with bandwidth.

摘要翻译： 提供了用于无线通信系统的超帧前同步码结构。 前导码可以包括可以提高采集性能的系统确定信息。 超帧结构可以有效地确定确定前导码结构的灵活参数。 超帧结构还可以促进快速寻呼容量，以扩展带宽。

公开(公告)号：US08477684B2

公开(公告)日：2013-07-02

申请号：US11943551

申请日：2007-11-20

申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Sundeep Rangan ,  Arnab Das

发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Sundeep Rangan ,  Arnab Das

IPC分类号： H04W4/00

CPC分类号： H04L1/1607 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0053 ,  H04W72/0413 ,  H04W72/042

摘要： Techniques for sending control messages are described. In an aspect, assignment messages may be acknowledged based on either linked or dedicated acknowledgement (ACK) resources. A terminal may receive an assignment message from a base station, determine whether to acknowledge the assignment message, and determine ACK resources to use to acknowledge the assignment message. The ACK resources may be linked to a control block on which the assignment message was received, linked to resources given by the assignment message, or assigned to the terminal. The terminal may send the acknowledgement on the ACK resources. In another aspect, a control message may be acknowledged based on ACK resources determined based on the control message or the control block. The ACK resources may be linked to resources assigned by the control message or linked to the control message. The terminal may send an acknowledgement for the control message on the ACK resources.

摘要翻译： 描述用于发送控制消息的技术。 在一方面，可以基于链接或专用确认（ACK）资源来确认分配消息。 终端可以从基站接收分配消息，确定是否确认分配消息，并确定用于确认分配消息的ACK资源。 ACK资源可以链接到其上接收到分配消息的控制块，链接到由分配消息给出的资源或分配给终端。 终端可以在ACK资源上发送确认。 在另一方面，可以基于基于控制消息或控制块确定的ACK资源来确认控制消息。 ACK资源可以链接到由控制消息分配或链接到控制消息的资源。 终端可以在ACK资源上发送关于控制消息的确认。

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。

公开(公告)号：US08442572B2

公开(公告)日：2013-05-14

申请号：US11848865

申请日：2007-08-31

申请人： Mohammad Jaber Borran ,  Aamod Khandekar ,  Alexei Gorokhov ,  Tingfang Ji ,  Naga Bhushan ,  Xin Zhang ,  Arumugam Chendamarai Kannan

发明人： Mohammad Jaber Borran ,  Aamod Khandekar ,  Alexei Gorokhov ,  Tingfang Ji ,  Naga Bhushan ,  Xin Zhang ,  Arumugam Chendamarai Kannan

IPC分类号： H04B7/185 ,  H04B7/00

CPC分类号： H04W24/02 ,  H04W52/16 ,  H04W52/243 ,  H04W52/44

摘要： Systems and methodologies are described that provide techniques for performing adjustments for delta-based power control and interference management in a wireless communication system. A terminal can utilize one or more delta-based power control techniques described herein upon engaging in a reverse link transmission after a predetermined period of silence or after receiving indications of interference from neighboring access points. A delta value can be computed through open-loop projection, based on which transmission resources such as bandwidth and/or transmit power can be increased or decreased to manage interference caused by the terminal. A delta value, other feedback from the terminal, and/or indications of interference caused by the terminal can also be communicated as feedback to a serving access point to allow the access point to assign transmission resources for the terminal.

摘要翻译： 描述了提供用于在无线通信系统中执行基于增量的功率控制和干扰管理的调整的技术的系统和方法。 在预定的静默期之后或在接收到来自相邻接入点的干扰的指示之后，终端可以利用本文所述的一个或多个基于增量的功率控制技术参与反向链路传输。 可以通过开环投影来计算增量值，基于可以增加或减少诸如带宽和/或发射功率的传输资源来管理由终端引起的干扰。 来自终端的增量值，其他反馈和/或由终端引起的干扰的指示也可以作为反馈传送到服务接入点，以允许接入点为终端分配传输资源。

公开(公告)号：US08396013B2

公开(公告)日：2013-03-12

申请号：US11848842

申请日：2007-09-06

申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Ravi Palanki

发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Ravi Palanki

IPC分类号： H04B1/56

CPC分类号： H04B7/2656

摘要： Systems and methodologies are described that provide support for signal acquisition in wireless communication systems that utilize half-duplex communication in the presence of asynchronous sectors. Forward link and reverse link superframes can be structured such that a given frame position in a superframe alternates between forward link communication and reverse link communication for a particular half-duplex interlace. More particularly, an odd number of frames can be grouped into respective forward link and reverse link superframes, from which frames can be assigned to a first half-duplex interlace and a second half-duplex interlace in an alternating fashion. By varying the communication link used by a half-duplex interlace at a given frame location, terminals operating on a single half-duplex interlace can detect asynchronously operating sectors irrespective of the transmission timeline of such sectors.

摘要翻译： 描述了在存在异步扇区的情况下利用半双工通信的无线通信系统中的信号获取的支持的系统和方法。 可以构造前向链路和反向链路超帧，使得超帧中的给定帧位置在特定半双工交错的前向链路通信和反向链路通信之间交替。 更具体地，奇数帧可以被分组成相应的前向链路和反向链路超帧，从该帧可以以交替的方式将帧分配给第一半双工交错和第二半双工交错。 通过改变在给定帧位置处的半双工交错使用的通信链路，在单个半双工交错上操作的终端可以检测异步操作扇区，而与这些扇区的传输时间线无关。