公开(公告)号：US08599705B2

公开(公告)日：2013-12-03

申请号：US12359612

申请日：2009-01-26

申请人： Avneesh Agrawal ,  Aamod D. Khandekar ,  Naga Bhushan ,  Alexei Y. Gorokhov ,  Ravi Palanki

发明人： Avneesh Agrawal ,  Aamod D. Khandekar ,  Naga Bhushan ,  Alexei Y. Gorokhov ,  Ravi Palanki

IPC分类号： H04L1/00 ,  H04W4/00

CPC分类号： H04W72/082 ,  H04W24/10

摘要： Techniques for managing interference in a wireless network are described. A base station may receive enhanced pilot measurement reports from user equipments (UEs) and may make an interference management decision based on the received reports. The base station may select a serving base station for a UE based on an enhanced pilot measurement report received from the UE. The base station may determine resources with a low target interference level at a neighbor base station and may avoid scheduling a UE for uplink transmission on the resources. The base station may also determine whether to reserve resources for a neighbor base station based on data performance of the neighbor base station, whether the neighbor base station observes high interference from UEs served by the base station, or whether UEs served by the neighbor base station observe high interference from the base station, which may be determined based on the enhanced pilot measurement reports.

摘要翻译： 描述了用于管理无线网络中的干扰的技术。 基站可以从用户设备（UE）接收增强的导频测量报告，并且可以基于所接收的报告进行干扰管理决定。 基站可以基于从UE接收的增强型导频测量报告来选择用于UE的服务基站。 基站可以在相邻基站处确定具有低目标干扰电平的资源，并且可以避免在资源上调度UE用于上行链路传输。 基站还可以基于邻近基站的数据性能来确定是否为相邻基站预留资源，邻近基站是否观察到来自基站所服务的UE的高干扰，或者是否由邻居基站服务的UE 观察来自基站的高干扰，其可以基于增强的导频测量报告来确定。

公开(公告)号：US08493887B2

公开(公告)日：2013-07-23

申请号：US12643845

申请日：2009-12-21

申请人： Ravi Palanki ,  Avneesh Agrawal ,  Naga Bhushan

发明人： Ravi Palanki ,  Avneesh Agrawal ,  Naga Bhushan

IPC分类号： H04L12/28 ,  H04W4/00

CPC分类号： H04W8/005 ,  H04W72/085 ,  H04W76/14

摘要： Techniques for centralized control of peer discovery pilot transmission are described. In an aspect, a designated network entity (e.g., a base station or a network controller) may control transmission of peer discovery pilots by stations located within its coverage area. In one design, the network entity may receive signaling triggering peer discovery pilot transmission. The network entity may direct each of at least one station to transmit a peer discovery pilot to allow one or more stations to detect the at least one station. The peer discovery pilot may include at least one synchronization signal or at least one reference signal. The network entity may receive pilot measurements from the one or more stations for peer discovery pilots from peer stations and/or reference signals from base stations. The network entity may determine whether or not to select peer-to-peer communication for two stations based on the pilot measurements.

摘要翻译： 描述了用于集中控制对等体发现导频传输的技术。 一方面，指定的网络实体（例如，基站或网络控制器）可以通过位于其覆盖区域内的站点来控制对等体发现导频的传输。 在一种设计中，网络实体可以接收信令触发对等体发现导频传输。 网络实体可以指示至少一个站中的每一个发送对等体发现导频，以允许一个或多个站检测至少一个站。 对等体发现导频可以包括至少一个同步信号或至少一个参考信号。 网络实体可以从一个或多个站接收来自对等站的对等体发现导频和/或来自基站的参考信号的导频测量。 网络实体可以基于导频测量来确定是否为两个站点选择对等通信。

公开(公告)号：US20100323717A1

公开(公告)日：2010-12-23

申请号：US12761224

申请日：2010-04-15

申请人： Parag Arun Agashe ,  Ravi Palanki ,  Tingfang Ji ,  Naga Bhushan

发明人： Parag Arun Agashe ,  Ravi Palanki ,  Tingfang Ji ,  Naga Bhushan

IPC分类号： H04W24/00

CPC分类号： G01S5/0045 ,  G01S1/68 ,  G01S11/06 ,  H04W64/003 ,  H04W84/045

摘要： Methods, apparatuses, and computer program products are disclosed for facilitating proximity detection in wireless networks. a location enhancement device is activated and a unique identifier associated with the location enhancement device is ascertained. A positioning signal that emulates a base station reference signal is then generated, which includes the unique identifier. The positioning signal is transmitted from the location enhancement device, wherein the positioning signal is detectable by wireless terminals proximate to the location enhancement device. Proximity detection is then facilitated by processing the positioning signal.

摘要翻译： 公开了用于促进无线网络中的接近检测的方法，装置和计算机程序产品。 激活位置增强设备并且确定与位置增强设备相关联的唯一标识符。 然后生成模拟基站参考信号的定位信号，其包括唯一标识符。 定位信号从位置增强设备发送，其中定位信号可由靠近位置增强设备的无线终端检测。 然后通过处理定位信号来促进接近检测。

公开(公告)号：US20100167743A1

公开(公告)日：2010-07-01

申请号：US12643853

申请日：2009-12-21

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

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

IPC分类号： H04W36/00 ,  H04B17/00

CPC分类号： H04B7/155 ,  H04B7/2606 ,  H04W72/02 ,  H04W72/085 ,  H04W88/04 ,  H04W92/18

摘要： Techniques for centralized control of relay operation are described. In an aspect, a designated network entity (e.g., a base station or a network controller) may control the operation of relay stations within its coverage area. The network entity may select certain user equipments (UEs) to be relay UEs that can serve as relay stations for other UEs, e.g., based on pathloss between the UEs and a base station, the locations of the UEs, battery power levels of the UEs, fairness considerations, etc. The network entity may also select a specific relay UE to serve as a relay station for a client UE desiring to communicate with a base station, e.g., based on pilot measurements from relay UEs for the client UE. The network entity may also control transmission of discovery pilots by relay UEs and/or client UEs for relay detection.

摘要翻译： 描述了中继操作的集中控制技术。 一方面，指定的网络实体（例如，基站或网络控制器）可以控制其覆盖区域内的中继站的操作。 网络实体可以选择某些用户设备（UE）作为可以用作其他UE的中继站的中继UE，例如，基于UE和基站之间的路径损耗，UE的位置，UE的电池功率级别 公平考虑等。网络实体还可以选择特定的中继UE作为用于希望与基站进行通信的客户机UE的中继站，例如，基于来自用于客户端UE的中继UE的导频测量。 网络实体还可以控制中继UE和/或客户端用于继电器检测的发现导频的传输。

公开(公告)号：US20100103821A1

公开(公告)日：2010-04-29

申请号：US12603397

申请日：2009-10-21

申请人： Ravi Palanki ,  Alexei Y. Gorokhov ,  Naga Bhushan

发明人： Ravi Palanki ,  Alexei Y. Gorokhov ,  Naga Bhushan

IPC分类号： H04L12/26 ,  H04W72/04 ,  H04W36/00

CPC分类号： H04W36/0055 ,  H04L1/0026 ,  H04L1/1607 ,  H04L5/0035 ,  H04W36/18

摘要： Systems and methods that designate a control attachment point(s) during transmission of data in a Coordinated Multipoint (CoMP) system. The control attachment point is represented by an anchor cell to address control signaling and represent a User Equipment's (UE) interaction with the wireless communication system from a perspective of control (e.g., supplying/sending grants to the UE, transmitting/receiving ACKS on the downlink/uplink to the UE, control information (CQI), and the like.) The cells can further engage in backhaul transfer of information therebetween, and dynamic switching/change of anchor point based on criteria such as control loading, channel quality, and the like can further be implemented.

摘要翻译： 在协调多点（CoMP）系统中传输数据期间指定控制连接点的系统和方法。 控制连接点由锚小区表示以解决控制信令，并且从控制的角度（例如，向UE提供/发送授权，在...上发送/接收ACKS）来表示与无线通信系统的用户设备（UE）交互 UE的下行链路/上行链路，控制信息（CQI）等）。小区可以进一步参与其间的信息的回程传输，以及基于诸如控制加载，信道质量等标准的动态切换/改变锚点 可以进一步实现。

公开(公告)号：US20100029262A1

公开(公告)日：2010-02-04

申请号：US12487580

申请日：2009-06-18

申请人： Michael M. Wang ,  Ravi Palanki ,  Naga Bhushan

发明人： Michael M. Wang ,  Ravi Palanki ,  Naga Bhushan

IPC分类号： H04W48/20 ,  H04W24/00 ,  H04B15/00

CPC分类号： H04W48/16 ,  H04B1/7107 ,  H04J11/004 ,  H04J11/0093 ,  H04W64/003

摘要： Techniques for performing cell detection with interference cancellation are described. In an aspect, a user equipment (UE) may detect for pilots from cells in a wireless network using interference cancellation. The UE may process a received signal to detect for pilots from one or more cells. The pilots may be common pilots transmitted with a reuse factor of one or low reuse pilots transmitted with a reuse factor greater than one. The UE may estimate the interference from a detected cell (e.g., the strongest detected cell) and may cancel the estimated interference from the received signal. The UE may then process the interference-canceled signal to detect for pilots from additional cells. The UE may be able to detect pilots from more cells, e.g., from weaker cells, by canceling the interference due to the pilots from the detected cells. This may be desirable for various applications such as positioning.

摘要翻译： 描述用于执行具有干扰消除的小区检测的技术。 在一方面，用户设备（UE）可以使用干扰消除来检测来自无线网络中的小区的导频。 UE可以处理接收的信号以检测来自一个或多个小区的导频。 导频可以是以重用因子大于1的一个或多个重用导频的重用因子发送的公共导频。 UE可以估计来自检测到的小区（例如，最强检测小区）的干扰，并且可以从接收到的信号中消除所估计的干扰。 然后，UE可以处理干扰消除信号，以检测来自其他小区的导频。 UE可能能够通过消除由于来自检测到的小区的导频引起的干扰来检测来自较弱小区的更多小区的导频。 这对于诸如定位的各种应用可能是期望的。

公开(公告)号：US20090199069A1

公开(公告)日：2009-08-06

申请号：US12360556

申请日：2009-01-27

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

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

IPC分类号： H03M13/05 ,  G06F11/07 ,  H03M13/15

CPC分类号： H04L1/0065 ,  H04L5/0053

摘要： Methods, apparatuses, and computer program products are disclosed for encoding/decoding a wireless control signal. For encoding, control bits are received and encoded with a first error control code so as to create a first set of encoded bits. The encoded bits are then encoded with a second error control code so as to create a second set of encoded bits, which are modulated as beacon tones and subsequently transmitted. For decoding, beacon tones corresponding to a set of control bits are received and subsequently demodulated so as to ascertain a set of demodulated bits. The demodulated bits are then decoded with a decoder so as to ascertain a set of decoded bits. The decoded bits are then decoded with a second decoder so as to ascertain a second set of decoded bits, which includes the set of control bits.

摘要翻译： 公开了用于对无线控制信号进行编码/解码的方法，装置和计算机程序产品。 对于编码，控制位被接收并用第一错误控制代码编码，以便创建第一组编码位。 然后用第二错误控制码对编码的比特进行编码，以便产生第二组编码比特，这些比特被调制为信标音调并且随后被发送。 对于解码，对应于一组控制位的信标音调被接收并随后进行解调，以便确定一组解调位。 然后解码的比特用解码器解码，以便确定一组解码的比特。 然后用第二解码器解码解码的比特，以便确定包括该组控制比特的第二组解码比特。

公开(公告)号：US20090197631A1

公开(公告)日：2009-08-06

申请号：US12359989

申请日：2009-01-26

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

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

IPC分类号： H04B7/005 ,  H04B15/00

CPC分类号： H04W72/0413 ,  H04W52/244 ,  H04W72/082 ,  Y02D70/00

摘要： Techniques for mitigating interference on control channels in a wireless communication network are described. In an aspect, high interference on radio resources used for a control channel may be mitigated by sending a request to reduce interference to one or more interfering stations. Each interfering station may reduce its transmit power on the radio resources, which may then allow the control channel to observe less interference. In one design, a user equipment (UE) may detect high interference on radio resources used for a control channel by a desired base station. The UE may send a request to reduce interference on the radio resources to an interfering base station, which may reduce its transmit power on the radio resources. The UE may receive the control channel on the radio resources from the desired base station and may observe less interference from the interfering base station.

摘要翻译： 描述了用于减轻无线通信网络中的控制信道上的干扰的技术。 在一个方面，可以通过发送减少对一个或多个干扰站的干扰的请求来减轻用于控制信道的无线电资源的高干扰。 每个干扰站可以减少其在无线电资源上的发射功率，这然后可以允许控制信道观测到更少的干扰。 在一种设计中，用户设备（UE）可以通过期望的基站检测用于控制信道的无线电资源的高干扰。 UE可以向干扰基站发送减少对无线电资源的干扰的请求，这可能降低其对无线电资源的发射功率。 UE可以从期望的基站在无线电资源上接收控制信道，并且可以观察到来自干扰基站的较少的干扰。

公开(公告)号：US20090197570A1

公开(公告)日：2009-08-06

申请号：US12198833

申请日：2008-08-26

申请人： Gavin B. Horn ,  Avneesh Agrawal ,  Ashwin Sampath ,  Alexei Gorokhov ,  Naga Bhushan ,  Rajarshi Gupta ,  Fatih Ulupinar ,  Parag A. Agashe ,  Rajat Prakash ,  Aamod Khandekar ,  Ravi Palanki

发明人： Gavin B. Horn ,  Avneesh Agrawal ,  Ashwin Sampath ,  Alexei Gorokhov ,  Naga Bhushan ,  Rajarshi Gupta ,  Fatih Ulupinar ,  Parag A. Agashe ,  Rajat Prakash ,  Aamod Khandekar ,  Ravi Palanki

IPC分类号： H04W12/08 ,  H04W68/00

CPC分类号： H04W48/08 ,  H04W68/00

摘要： Signaling-only access may be established with an access node under certain circumstances such as, for example, upon determining that a node is not authorized for data access at the access node. A node that is not authorized for data access at an access node may still be paged by the access node through the use of signaling-only access. In this way, transmissions by the access node may not interfere with the reception of pages at the node. A first node may be selected for providing paging while a second node is selected for access under certain circumstances such as, for example, upon determining that the second node provides more desirable service than the first node.

摘要翻译： 在某些情况下，例如在确定节点未被授权用于访问节点处的数据访问时，可以与接入节点建立仅信令访问。 在访问节点处未被授权用于数据访问的节点仍然可以由接入节点通过使用仅信令接入进行寻呼。 以这种方式，接入节点的传输可能不干扰节点处的页面的接收。 可以选择第一节点来提供寻呼，而在某些情况下例如在确定第二节点提供比第一节点更理想的服务时，第二节点被选择用于接入。

公开(公告)号：US20090135761A1

公开(公告)日：2009-05-28

申请号：US12260826

申请日：2008-10-29

申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Ravi Palanki

发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Ravi Palanki

IPC分类号： H04W36/00

CPC分类号： H04W52/244 ,  H04B17/318 ,  H04L1/1854 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0053 ,  H04L5/006 ,  H04L5/0091 ,  H04W72/00 ,  H04W72/12 ,  H04W92/20

摘要： Providing for base station (BS) acquisition in semi-planned or unplanned wireless access networks is described herein. By way of example, a signal preamble can be dynamically allocated to wireless signal resources, such that the preamble is scheduled to different resource(s) across different cycles of the signal. Dynamic allocation can be pseudo-random, based on collision feedback, or determined by a suitable algorithm to mitigate collisions from a dominant interferer. In addition, dynamic scheduling can be particular to a type of BS to significantly reduce collisions from BSs of disparate types. In at least one aspect, a preamble resource can be sub-divided into multiple frequency sub-carrier tiles. Control channel information can be transmitted on each tile of a group of such tiles, further mitigating effects of a dominant interferer on a subset of the tile group.

摘要翻译： 本文描述了在半计划或非计划无线接入网络中提供基站（BS）采集。 作为示例，可以将信号前同步码动态地分配给无线信号资源，使得前导码被调度到跨越信号的不同周期的不同资源。 动态分配可以是伪随机的，基于碰撞反馈，或者由适当的算法确定，以减轻来自主要干扰源的冲突。 此外，动态调度对于一种类型的BS可以是特别的，以显着减少来自不同类型的BS的冲突。 在至少一个方面，前导码资源可以被细分为多个频率子载波瓦片。 可以在一组这样的瓦片的每个瓦片上发送控制信道信息，进一步减轻显着干扰源对瓦片组的子集的影响。