公开(公告)号：US20100027471A1

公开(公告)日：2010-02-04

申请号：US12505126

申请日：2009-07-17

申请人： Ravi Palanki ,  Parag A. Agashe ,  Naga Bhushan

发明人： Ravi Palanki ,  Parag A. Agashe ,  Naga Bhushan

IPC分类号： H04W4/00

CPC分类号： H04B7/024 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0617 ,  H04W36/0005 ,  H04W36/20 ,  H04W72/0406

摘要： Systems and methodologies are described herein that facilitate distributed multiple-input multiple-output (MIMO) or cooperative multipoint (CoMP) communication in a wireless communication system. As described herein, multiple cells, such as a serving cell and an auxiliary cell, can cooperate to conduct communication with one or more associated terminals. In one example described herein, an associated core network can exchange data and/or control signaling with a single cell communicating with a given terminal, which can then tunnel respective data and/or control signaling to other cell(s). By doing so, CoMP communication can be made transparent to the core network and can be achieved without requiring changes to the network. As further described herein, a terminal can exchange Physical Downlink Control Channel (PDCCH) assignments and/or other information exclusively with the serving cell in addition to or in place of other information exchanged with a serving cell and/or an auxiliary cell.

摘要翻译： 本文描述了在无线通信系统中促进分布式多输入多输出（MIMO）或协作多点（CoMP）通信的系统和方法。 如本文所述，诸如服务小区和辅助小区的多个小区可以协作以与一个或多个相关联的终端进行通信。 在这里描述的一个示例中，相关联的核心网络可以与与给定终端通信的单个小区交换数据和/或控制信令，然后可以将相应的数据和/或控制信令传送到其他小区。 通过这样做，可以使CoMP通信对于核心网络是透明的，并且可以在不需要改变网络的情况下实现。 如本文进一步描述的，终端除了或替代与服务小区和/或辅助小区交换的其他信息之外，还可以与服务小区专门地交换物理下行链路控制信道（PDCCH）分配和/或其他信息。

公开(公告)号：US20090197590A1

公开(公告)日：2009-08-06

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： H04W24/00 ,  H04W72/00

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：US20090197538A1

公开(公告)日：2009-08-06

申请号：US12262013

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： H04B1/00

CPC分类号： H04W52/243 ,  H04B7/0617 ,  H04B17/382 ,  H04W52/247

摘要： Techniques for transmitting data with short-term interference mitigation in a wireless communication system are described. In one design, a first station (e.g., a base station or a terminal) may send a first message to at least one interfering station to request reduction of interference on at least one resource. The first station may send the first message in anticipation of receiving data on the at least one resource. An interfering station may receive the first message from the first station and may reduce interference on the at least one resource by reducing its transmit power and/or by steering its power in a direction different from the first station. The first station may thereafter receive data from a second station on the at least one resource. The techniques may be used for data transmission on the forward and reverse links.

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，第一站（例如，基站或终端）可以向至少一个干扰站发送第一消息，以请求减少对至少一个资源的干扰。 第一站可以发送第一消息以预期在至少一个资源上接收数据。 干扰站可以从第一站接收第一消息，并且可以通过减少其发射功率和/或通过在与第一站不同的方向上转向其功率来减少对至少一个资源的干扰。 此后，第一站可以在至少一个资源上从第二站接收数据。 这些技术可以用于前向和反向链路上的数据传输。

公开(公告)号：US20090158120A1

公开(公告)日：2009-06-18

申请号：US12241371

申请日：2008-09-30

申请人： Ravi Palanki ,  Naga Bhushan

发明人： Ravi Palanki ,  Naga Bhushan

IPC分类号： H03M13/05 ,  G06F11/07

CPC分类号： H04L1/0057 ,  H04L1/007 ,  H04L1/0086

摘要： A hierarchical cyclic redundancy check (CRC) is provided that enables CRC appending and detection. A message that includes a first message portion and a second message portion is transmitted to two or more receivers. The receivers are not aware of the first message portion. One of the receivers can be aware of the second message portion of the message. Each portion of the message can be encoded with a CRC in order to provide protection. The receiver that is aware of the second message portion is provided a higher level of cyclic redundancy check (CRC) protection than the receivers that are not aware of the second message portions.

摘要翻译： 提供了能够进行CRC附加和检测的分级循环冗余校验（CRC）。 包括第一消息部分和第二消息部分的消息被发送到两个或更多个接收器。 接收者不知道第一个消息部分。 其中一个接收器可以知道消息的第二个消息部分。 消息的每个部分可以用CRC编码，以便提供保护。 提供了与不知道第二消息部分的接收器相比，知道第二消息部分的接收机提供了更高级别的循环冗余校验（CRC）保护。

公开(公告)号：US20090130980A1

公开(公告)日：2009-05-21

申请号：US12262576

申请日：2008-10-31

申请人： Ravi Palanki ,  Aamod Khandekar ,  Naga Bhushan

发明人： Ravi Palanki ,  Aamod Khandekar ,  Naga Bhushan

IPC分类号： H04B1/00 ,  H04B7/00

CPC分类号： H04W74/0816 ,  H04B7/0617 ,  H04L5/0048 ,  H04W52/241 ,  H04W52/325 ,  H04W72/0426 ,  H04W72/046 ,  H04W72/08 ,  H04W72/082 ,  H04W72/14 ,  H04W88/02 ,  H04W88/08

摘要： Techniques for transmitting data with persistent interference mitigation in a wireless communication system are described. A station (e.g., a base station or a terminal) may observe high interference and may send a request to reduce interference to interfering stations. The request may be valid for a time period covering multiple response periods. Each interfering station may grant or dismiss the request in each response period, may dismiss the request by transmitting at full power, and may grant the request by transmitting at lower than full power. The station may receive a response from each interfering station indicating grant or dismissal of the request by that interfering station in each response period. The station may estimate SINR based on the response received from each interfering station and may exchange data with another station based on the estimated SINR. Persistent interference mitigation may reduce signaling overhead and improve resource utilization and performance.

摘要翻译： 描述了在无线通信系统中传输具有持续干扰减轻的数据的技术。 站（例如，基站或终端）可以观察到高干扰，并且可以发送减少对干扰站的干扰的请求。 该请求可以在覆盖多个响应周期的时间段内有效。 每个干扰站可以在每个响应周期中授权或者解除请求，可以通过全功率发射来解除请求，并且可以以低于全功率的方式发送请求。 站点可以从每个干扰站接收指示在每个响应周期中该干扰站的请求的授权或解除的响应。 该站可以基于从每个干扰站接收到的响应估计SINR，并且可以基于估计的SINR与另一个站交换数据。 持续的干扰减轻可以减少信令开销并提高资源利用率和性能。

公开(公告)号：US20090130979A1

公开(公告)日：2009-05-21

申请号：US12163835

申请日：2008-06-27

申请人： Naga Bhushan ,  Aamod Khandekar ,  Ravi Palanki

发明人： Naga Bhushan ,  Aamod Khandekar ,  Ravi Palanki

IPC分类号： H04B15/00

CPC分类号： H04W52/243 ,  H04W52/325 ,  H04W52/38 ,  H04W52/44

摘要： Systems and methodologies are described that facilitate blanking on portions of bandwidth utilized by communicating devices that are dominantly interfered by a disparate device in wireless communications networks. The portions of bandwidth can relate to critical data, such as control data, and one or more of the communicating devices can request that the dominantly interfering device blank on one or more of the portions. The communicating devices can subsequently transmit data over the blanked portions free of the dominant interference. Additionally, the dominantly interfering device can request reciprocal blanking from the one or more communicating devices.

摘要翻译： 描述了系统和方法，其有助于消除由无线通信网络中的不同设备主要干扰的通信设备所使用的带宽部分的消隐。 带宽的部分可以与诸如控制数据的关键数据相关联，并且一个或多个通信设备可以请求在一个或多个部分上的主要干扰设备空白。 通信设备可以随后在没有主导干扰的消隐部分上发送数据。 此外，主要干扰装置可以从一个或多个通信装置请求相互消隐。

公开(公告)号：US20160149659A1

公开(公告)日：2016-05-26

申请号：US15011088

申请日：2016-01-29

申请人： Ravi Palanki ,  Aamod Khandekar ,  Naga Bhushan

发明人： Ravi Palanki ,  Aamod Khandekar ,  Naga Bhushan

IPC分类号： H04J11/00 ,  H04W72/08 ,  H04L5/00

CPC分类号： H04J11/005 ,  H04B1/7107 ,  H04B2201/70702 ,  H04J11/004 ,  H04J11/0069 ,  H04L5/0048 ,  H04L5/0053 ,  H04W24/00 ,  H04W48/08 ,  H04W72/082

摘要： Techniques for transmitting and detecting for overhead channels and signals in a wireless network are described. In an aspect, a base station may blank (i.e., not transmit) at least one overhead transmission on certain resources in order to detect for the at least one overhead transmission of another base station. In one design, the base station may (i) send the overhead transmission(s) on a first subset of designated resources and (ii) blank the overhead transmission(s) on a second subset of the designated resources. The designated resources may be resources on which the overhead transmission(s) are sent by macro base stations. The base station may detect for the overhead transmission(s) from at least one other base station on the second subset of the designated resources. In another aspect, the base station may transmit the overhead transmission(s) on additional resources different from the designated resources.

公开(公告)号：US09326253B2

公开(公告)日：2016-04-26

申请号：US12163835

申请日：2008-06-27

申请人： Naga Bhushan ,  Aamod Khandekar ,  Ravi Palanki

发明人： Naga Bhushan ,  Aamod Khandekar ,  Ravi Palanki

IPC分类号： H04W52/00 ,  H04W52/24 ,  H04W52/32 ,  H04W52/44 ,  H04W52/38

CPC分类号： H04W52/243 ,  H04W52/325 ,  H04W52/38 ,  H04W52/44

摘要： Systems and methodologies are described that facilitate blanking on portions of bandwidth utilized by communicating devices that are dominantly interfered by a disparate device in wireless communications networks. The portions of bandwidth can relate to critical data, such as control data, and one or more of the communicating devices can request that the dominantly interfering device blank on one or more of the portions. The communicating devices can subsequently transmit data over the blanked portions free of the dominant interference. Additionally, the dominantly interfering device can request reciprocal blanking from the one or more communicating devices.

摘要翻译： 描述了系统和方法，其有助于消除由无线通信网络中的不同设备主要干扰的通信设备所使用的带宽部分的消隐。 带宽的部分可以与诸如控制数据的关键数据相关联，并且一个或多个通信设备可以请求在一个或多个部分上的主要干扰设备空白。 通信设备可以随后在没有主导干扰的消隐部分上发送数据。 此外，主要干扰装置可以从一个或多个通信装置请求相互消隐。

公开(公告)号：US09253651B2

公开(公告)日：2016-02-02

申请号：US12770453

申请日：2010-04-29

申请人： Ravi Palanki ,  Aamod Dinkar Khandekar ,  Naga Bhushan

发明人： Ravi Palanki ,  Aamod Dinkar Khandekar ,  Naga Bhushan

IPC分类号： H04J11/00 ,  H04W24/00 ,  H04B1/7107 ,  H04L5/00 ,  H04W48/08

CPC分类号： H04J11/005 ,  H04B1/7107 ,  H04B2201/70702 ,  H04J11/004 ,  H04J11/0069 ,  H04L5/0048 ,  H04L5/0053 ,  H04W24/00 ,  H04W48/08 ,  H04W72/082

摘要： Techniques for transmitting and detecting for overhead channels and signals in a wireless network are described. In an aspect, a base station may blank (i.e., not transmit) at least one overhead transmission on certain resources in order to detect for the at least one overhead transmission of another base station. In one design, the base station may (i) send the overhead transmission(s) on a first subset of designated resources and (ii) blank the overhead transmission(s) on a second subset of the designated resources. The designated resources may be resources on which the overhead transmission(s) are sent by macro base stations. The base station may detect for the overhead transmission(s) from at least one other base station on the second subset of the designated resources. In another aspect, the base station may transmit the overhead transmission(s) on additional resources different from the designated resources.

摘要翻译： 描述了用于无线网络中的开销信道和信号的发送和检测的技术。 在一方面，基站可能在某些资源上空白（即不发送）至少一个开销传输，以便检测另一个基站的至少一个开销传输。 在一种设计中，基站可以（i）在指定资源的第一子集上发送开销传输，并且（ii）将指定资源的第二子集上的开销传输空白。 指定的资源可以是由宏基站发送开销传输的资源。 基站可以从指定资源的第二子集上的至少一个其他基站检测开销传输。 在另一方面，基站可以对与指定资源不同的附加资源发送开销传输。

公开(公告)号：US09226300B2

公开(公告)日：2015-12-29

申请号：US12498467

申请日：2009-07-07

申请人： Ravi Palanki ,  Aamod D. Khandekar ,  Naga Bhushan

发明人： Ravi Palanki ,  Aamod D. Khandekar ,  Naga Bhushan

IPC分类号： H04B7/00 ,  H04B1/44 ,  H04Q7/00 ,  H04Q7/20 ,  H04W72/08

CPC分类号： H04W72/082

摘要： Techniques for sending control information in a wireless network are described. In an aspect, a hierarchical control channel structure may be used, a first group of control channels may be sent in a low reuse segment, and a second group of control channels may be sent in a non-reuse segment. In another aspect, a first control channel is sent in the low reuse segment and is used to configure a second control channel sent in the non-reuse segment so that the second control channel can be reliably received in dominant interference scenarios. In one design, a first base station sends a first message on a first control channel to a user equipment (UE). The UE sends a second message to an interfering base station to request it to reduce interference to a second control channel. The first base station sends control information on the second control channel to the UE.

摘要翻译： 描述用于在无线网络中发送控制信息的技术。 在一方面，可以使用分级控制信道结构，可以在低重用段中发送第一组控制信道，并且可以在非重用段中发送第二组控制信道。 在另一方面，第一控制信道在低重用段中被发送，并且用于配置在非重用段中发送的第二控制信道，使得可以在主要干扰场景中可靠地接收第二控制信道。 在一种设计中，第一基站在第一控制信道上向用户设备（UE）发送第一消息。 UE向干扰基站发送第二消息以请求它减少对第二控制信道的干扰。 第一基站向UE发送关于第二控制信道的控制信息。