公开(公告)号：US20110305179A1

公开(公告)日：2011-12-15

申请号：US13154645

申请日：2011-06-07

申请人： Renqiu Wang ,  Ravi Palanki ,  Naga Bhushan ,  Siddhartha Mallik

发明人： Renqiu Wang ,  Ravi Palanki ,  Naga Bhushan ,  Siddhartha Mallik

IPC分类号： H04W4/00 ,  H04W52/02

CPC分类号： H04L1/1692 ,  H04L1/0031 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0224 ,  H04W76/14

摘要： Techniques for supporting peer-to-peer (P2P) communication are disclosed. In an aspect, P2P communication may be supported with a symmetric waveform for a P2P downlink and a P2P uplink. In one design, a first UE generates a first signal based on a particular waveform (e.g., a downlink waveform or an uplink waveform for a wireless network) and transmits the first signal to a second UE for P2P communication. The first UE also receives a second signal generated by the second UE based on the particular waveform and transmitted to the first UE for P2P communication. In another aspect, a proximity detection signal may be transmitted in a portion of a subframe instead of the entire subframe. The remaining portion of the subframe may be used to transmit control information and/or other information to support P2P communication.

摘要翻译： 披露了用于支持点对点（P2P）通信的技术。 在一方面，P2P通信可以以P2P下行链路和P2P上行链路的对称波形来支持。 在一种设计中，第一UE基于特定波形（例如，下行链路波形或无线网络的上行链路波形）生成第一信号，并将第一信号发送到第二UE进行P2P通信。 第一UE还基于特定波形接收由第二UE生成的第二信号，并发送给第一UE进行P2P通信。 另一方面，可以在子帧的一部分而不是整个子帧中发送接近检测信号。 子帧的剩余部分可以用于发送控制信息和/或其他信息以支持P2P通信。

公开(公告)号：US20110228666A1

公开(公告)日：2011-09-22

申请号：US13046176

申请日：2011-03-11

申请人： Alan Barbieri ,  Naga Bhushan ,  Ravi Palanki ,  Peter Gaal

发明人： Alan Barbieri ,  Naga Bhushan ,  Ravi Palanki ,  Peter Gaal

IPC分类号： H04W72/04 ,  H04W24/00 ,  H04W36/30

CPC分类号： H04W76/023 ,  H04W36/06 ,  H04W36/36 ,  H04W76/14

摘要： Techniques for establishing and maintaining peer-to-peer (P2P) communication are described. In an aspect, P2P communication on an unlicensed spectrum may be established and maintained with network assistance. In one design, a user equipment (UE) may communicate with a wide area network (WAN) to establish P2P communication with at least one other UE on a first frequency band that is not licensed to the WAN. For example, the UE may receive an assignment of at least one frequency channel in the first frequency band for P2P communication. The UE may then communicate peer-to-peer with the other UE(s) on the at least one frequency channel. The UE may also communicate with the WAN to maintain P2P communication with the other UE(s), e.g., to switch to another frequency channel if necessary.

摘要翻译： 描述了用于建立和维护对等（P2P）通信的技术。 在一方面，可以通过网络协助建立和维护非许可频谱上的P2P通信。 在一种设计中，用户设备（UE）可以与广域网（WAN）进行通信，以便在未被许可给WAN的第一频带上与至少一个其他UE建立P2P通信。 例如，UE可以接收用于P2P通信的第一频带中的至少一个频率信道的分配。 然后，UE可以在至少一个频率信道上与其他UE进行点对点通信。 UE还可以与WAN通信以保持与其他UE的P2P通信，例如，如果需要，切换到另一个频率信道。

公开(公告)号：US20100074180A1

公开(公告)日：2010-03-25

申请号：US12561844

申请日：2009-09-17

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

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

IPC分类号： H04W4/00 ,  H04J3/06

CPC分类号： H04W56/0015

摘要： A method for synchronizing a wireless communication system is disclosed. A silence duration for a base station is determined based on the time required for a neighbor base station to obtain or maintain synchronization. All transmissions from the base station are ceased for the silence duration. Multiple base stations level may cease transmissions at the same time, thus mitigating interference.

摘要翻译： 公开了一种同步无线通信系统的方法。 基于相邻基站获得或维持同步所需的时间来确定基站的静默持续时间。 来自基站的所有传输在静默持续时间内停止。 多个基站级别可以同时停止传输，从而减轻干扰。

公开(公告)号：US08693444B2

公开(公告)日：2014-04-08

申请号：US13465943

申请日：2012-05-07

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

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

IPC分类号： H04B7/216 ,  H04W72/04 ,  H04B1/713 ,  H04W72/08 ,  H04L5/00 ,  H04B7/26

CPC分类号： H04W72/04 ,  H04B1/713 ,  H04B7/2621 ,  H04L1/1692 ,  H04L5/0053 ,  H04W52/146 ,  H04W52/16 ,  H04W52/243 ,  H04W52/247 ,  H04W52/362 ,  H04W52/60 ,  H04W72/08

摘要： Techniques for sending control information in a wireless communication system are described. A control segment may include L≧1 tiles, and each tile may include a number of transmission units. A number of control resources may be defined and mapped to the transmission units for the control segment. For symmetric mapping, multiple sets of S≧1 control resources may be formed, and each batch of L consecutive sets of S control resources may be mapped to S transmission units at the same location in the L tiles. For localized mapping, S>1, and each set of S control resources may be mapped to a cluster of S adjacent transmission units in one tile. For distributed mapping, S=1, and each control resource may be mapped to one transmission unit in one tile. For diversity, each control resource may be mapped to multiple (e.g., three) transmission units in at least one tile.

公开(公告)号：US08614975B2

公开(公告)日：2013-12-24

申请号：US12561844

申请日：2009-09-17

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

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

IPC分类号： H04W4/00 ,  H04J3/06

CPC分类号： H04W56/0015

摘要： A method for synchronizing a wireless communication system is disclosed. A silence duration for a base station is determined based on the time required for a neighbor base station to obtain or maintain synchronization. All transmissions from the base station are ceased for the silence duration. Multiple base stations level may cease transmissions at the same time, thus mitigating interference.

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：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：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。

公开(公告)号：US09264183B2

公开(公告)日：2016-02-16

申请号：US12446709

申请日：2007-10-24

申请人： Alexei Gorokhov ,  Aamod Khandekar ,  Naga Bhushan ,  Petru Christian Budianu ,  Ravi Palanki ,  Siddhartha Mallik

发明人： Alexei Gorokhov ,  Aamod Khandekar ,  Naga Bhushan ,  Petru Christian Budianu ,  Ravi Palanki ,  Siddhartha Mallik

IPC分类号： H04W4/00 ,  H04L1/16 ,  H04L1/18 ,  H04W76/02

CPC分类号： H04L1/1671 ,  H04L1/1858 ,  H04W76/10

摘要： Systems and methodologies are described that facilitate establishing a forward link acknowledgement channel and transmitting acknowledgment signals thereupon. In particular, the signals can be spread within contiguous channel clusters in a tile where the signals in the cluster are mutually orthogonal to one another. Additionally, the signals can be multiplexed over a plurality of frequency regions. In this regard, the acknowledgment signals are diverse with respect to frequency and interference; moreover, the signals can be received and decoded even where one of the channels experiences high interference. Furthermore, the acknowledgement signals can also communicate a channel deassignment value, which allows devices to utilize persistent channels in communicating data to one another.

摘要翻译： 描述了有助于建立前向链路确认信道并在其上发送确认信号的系统和方法。 特别地，信号可以在其中簇中的信号彼此相互正交的瓦片中的相邻信道簇内扩展。 另外，可以在多个频率区域上复用信号。 在这方面，确认信号在频率和干扰方面是不同的; 此外，即使在一个信道经受高干扰的情况下也可以接收和解码信号。 此外，确认信号还可以传送信道去分配值，这允许设备利用持久信道将数据彼此通信。