公开(公告)号：US08942165B2

公开(公告)日：2015-01-27

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： H04W36/00 ,  H04W36/22 ,  H04W4/00 ,  H04W92/20 ,  H04B7/04 ,  H04B7/06 ,  H04B7/02 ,  H04W72/04 ,  H04W36/20

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：US08818285B2

公开(公告)日：2014-08-26

申请号：US12262022

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： H04B15/00 ,  H04B1/00 ,  H04W52/34 ,  H04W52/24 ,  H04W52/32 ,  H04W52/28

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 first station (e.g., a base station or a terminal) may receive a message sent by a second station to request reduction of interference on at least one resource. In response to receiving the message, the first station may determine a first transmit power level to use for the at least one resource based on one or more factors such as a priority metric sent in the message, the buffer size at the first station, etc. The first station may send a power decision pilot on the at least one resource at a second transmit power level determined based on the first transmit power level.

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）可以接收由第二站发送的消息以请求减少对至少一个资源的干扰。 响应于接收到消息，第一站可以基于一个或多个因素来确定用于至少一个资源的第一发射功率电平，诸如消息中发送的优先级度量，第一站的缓冲器大小等 第一站可以基于第一发射功率电平确定的第二发射功率电平在所述至少一个资源上发送功率决定导频。

公开(公告)号：US08811359B2

公开(公告)日：2014-08-19

申请号：US13085322

申请日：2011-04-12

申请人： Renqiu Wang ,  Dung Ngoc Doan ,  Ravi Palanki ,  Naga Bhushan

发明人： Renqiu Wang ,  Dung Ngoc Doan ,  Ravi Palanki ,  Naga Bhushan

IPC分类号： H04W4/00 ,  H04W72/04 ,  H04W84/18 ,  H04W76/02

CPC分类号： H04W72/0493 ,  H04W72/04 ,  H04W76/14 ,  H04W84/18

摘要： Techniques for supporting peer-to-peer (P2P) communication and wide area network (WAN) communication are disclosed. In one aspect, P2P communication may be supported on an uplink spectrum. A user equipment (UE) may communicate (i) with a base station on both a downlink spectrum and an uplink spectrum for WAN communication and (ii) with another UE on only the uplink spectrum for P2P communication. In another aspect, P2P communication may be supported by time division multiplexing the downlink and uplink (or transmit and receive links) for two UEs. In yet another aspect, WAN communication and P2P communication may be time division multiplexed, so that both can be concurrently supported by a UE. In yet another aspect, transmission gaps may be provided between WAN transmissions and P2P transmissions in order to avoid interference between these transmissions.

摘要翻译： 公开了用于支持对等（P2P）通信和广域网（WAN）通信的技术。 在一个方面，可以在上行链路频谱上支持P2P通信。 用户设备（UE）可以在下行链路频谱和用于WAN通信的上行链路频谱上与基站进行通信（ii）仅与用于P2P通信的上行链路频谱的另一UE通信。 另一方面，可以通过对两个UE进行下行链路和上行链路（或发送和接收链路）的时分复用来支持P2P通信。 在另一方面，WAN通信和P2P通信可以被时分复用，从而可以由UE同时支持两者。 在另一方面，可以在WAN传输和P2P传输之间提供传输间隙，以避免这些传输之间的干扰。

公开(公告)号：US08737296B2

公开(公告)日：2014-05-27

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： H04W4/00

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：US08504091B2

公开(公告)日：2013-08-06

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

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：US20120218943A1

公开(公告)日：2012-08-30

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： H04W48/12

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.

摘要翻译： 描述用于在无线通信系统中发送控制信息的技术。 控制段可以包括L≥1瓦片，并且每个瓦片可以包括多个传输单元。 可以将多个控制资源定义并映射到控制段的传输单元。 对于对称映射，可以形成多组S≥1个控制资源，并且每L批连续的S个控制资源组可以被映射到L个瓦片中相同位置处的S个传输单元。 对于局部映射，S> 1，并且每组S个控制资源可以被映射到一个瓦片中的S个相邻传输单元的簇。 对于分布式映射，S = 1，并且每个控制资源可以映射到一个瓦片中的一个传输单元。 对于分集，每个控制资源可以映射到至少一个瓦片中的多个（例如，三个）传输单元。

公开(公告)号：US20120120885A1

公开(公告)日：2012-05-17

申请号：US13231748

申请日：2011-09-13

申请人： Renqiu Wang ,  Ravi Palanki ,  Naga Bhushan ,  Durga Prasad Malladi

发明人： Renqiu Wang ,  Ravi Palanki ,  Naga Bhushan ,  Durga Prasad Malladi

IPC分类号： H04W72/04

CPC分类号： H04W72/04 ,  H04W76/14

摘要： A method, an apparatus, and a computer program product for wireless communication are provided in which a UE is equipped to receive first peer-to-peer communications using a first network communication channelization and a waveform, and transmit second peer-to-peer communications using a second network communication channelization and the waveform. Further, the UE may be equipped to map one or more channels in the second peer-to-peer communications to one or more uplink channels and/or downlink channels in the second network communication channelization. The second network communication channelization may include an LTE uplink/downlink channelization. The waveform may include OFDM or SC-FDM.

摘要翻译： 提供了一种用于无线通信的方法，装置和计算机程序产品，其中UE被配备为使用第一网络通信信道化和波形来接收第一对等通信，并且发送第二对等通信 使用第二个网络通信通道化和波形。 此外，UE可以被配备为在第二网络通信信道化中将第二对等通信中的一个或多个信道映射到一个或多个上行链路信道和/或下行链路信道。 第二网络通信信道化可以包括LTE上行链路/下行链路信道化。 波形可以包括OFDM或SC-FDM。

公开(公告)号：US20110317586A1

公开(公告)日：2011-12-29

申请号：US13163499

申请日：2011-06-17

申请人： Ravi Palanki ,  Naga Bhushan ,  Durga Prasad Malladi

发明人： Ravi Palanki ,  Naga Bhushan ,  Durga Prasad Malladi

IPC分类号： H04W48/16

CPC分类号： H04W8/005 ,  H04W84/18

摘要： Techniques for supporting peer-to-peer (P2P) communication are disclosed. In an aspect, a device performs peer discovery based on trigger events. In one design, the device detects an event triggering peer discovery, which may be an application becoming active on the device, a change in the position of the device, the device being turned on, etc. The device performs peer discovery based on detection of the event triggering peer discovery. In one design, the device starts peer discovery in response to detecting the trigger event. In another design, the device changes at least one characteristic (e.g., the periodicity) of peer discovery in response to detecting the trigger event. In another design, a device determines an application becoming active on the device. The device transmits a query (e.g., in a proximity detection signal) to request for a service from a peer device to support the application.

摘要翻译： 披露了用于支持点对点（P2P）通信的技术。 在一方面，设备基于触发事件执行对等体发现。 在一种设计中，设备检测触发对等体发现的事件，其可以是应用在设备上变得活跃，设备位置的改变，设备被打开等。设备基于检测到 事件触发对等体发现。 在一种设计中，设备响应于检测到触发事件而启动对等体发现。 在另一种设计中，响应于检测到触发事件，设备改变对等体发现的至少一个特性（例如，周期性）。 在另一种设计中，设备确定应用在设备上变得活跃。 设备发送查询（例如，在接近检测信号中）以请求来自对等设备的服务以支持应用。

公开(公告)号：US20100311437A1

公开(公告)日：2010-12-09

申请号：US12792144

申请日：2010-06-02

申请人： Ravi Palanki ,  Naga Bhushan

发明人： Ravi Palanki ,  Naga Bhushan

IPC分类号： H04W64/00

CPC分类号： G01S5/0252 ,  G01S5/021 ,  G01S5/12

摘要： Techniques for supporting positioning of user equipments (UEs) with network-based measurements are described. In one design, a network entity (e.g., a location server) may obtain at least one measurement for a UE, e.g., a power headroom measurement, a spatial direction measurement, an uplink timing measurement, an uplink pilot measurement, an observed time difference of arrival (OTDOA) measurement, or a combination thereof. The network entity may determine a location estimate for the UE based on the at least one measurement for the UE and a database of measurements for different locations, e.g., using pattern matching or interpolation. In one design, the network entity may receive measurements and locations of a plurality of UEs and may update the database based on the measurements and locations of these UEs. The database may also be updated based on measurements obtained by test UEs during test drives.

摘要翻译： 描述用于支持基于网络的测量的用户设备（UE）的定位的技术。 在一种设计中，网络实体（例如，位置服务器）可以为UE获得至少一个测量，例如功率余量测量，空间方向测量，上行链路定时测量，上行链路导频测量，观测时间差 （OTDOA）测量或其组合。 网络实体可以基于针对UE的至少一个测量以及例如使用模式匹配或插值的不同位置的测量数据库来确定UE的位置估计。 在一种设计中，网络实体可以接收多个UE的测量和位置，并且可以基于这些UE的测量和位置来更新数据库。 还可以基于在测试驱动期间由测试UE获得的测量来更新数据库。

公开(公告)号：US20100172311A1

公开(公告)日：2010-07-08

申请号：US12651838

申请日：2010-01-04

申请人： Avneesh Agrawal ,  Ashwin Sampath ,  Ravi Palanki ,  Naga Bhushan ,  Raja Sekhar Bachu ,  Aamod D. Khandekar

发明人： Avneesh Agrawal ,  Ashwin Sampath ,  Ravi Palanki ,  Naga Bhushan ,  Raja Sekhar Bachu ,  Aamod D. Khandekar

IPC分类号： H04W72/04 ,  H04L27/28

CPC分类号： H04L5/005 ,  H04L1/1893 ,  H04L5/0048 ,  H04L5/0082 ,  H04W72/005 ,  H04W72/1247

摘要： Systems and methodologies are described that facilitate providing high reuse for transmitting reference signals, such as positioning reference signals (PRS) and cell-specific reference signals (CRS), to improve hearability thereof for applications such as trilateration and/or the like. In particular, PRSs can be transmitted in designated or selected positioning subframes. Resource elements within the positioning subframe can be selected for transmitting the PRSs and can avoid conflict with designated control regions, resource elements used for transmitting cell-specific reference signals, and/or the like. Resource elements for transmitting PRSs can be selected according to a planned or pseudo-random reuse scheme. In addition, a transmit diversity scheme can be applied to the PRSs to minimize impact of introducing the PRSs to legacy devices. Moreover, portions of a subframe not designated for PRS transmission can be utilized for user plane data transmission.

摘要翻译： 描述了有助于提供用于传输参考信号（诸如定位参考信号（PRS）和小区特定参考信号（CRS））的高重用性的系统和方法，以改善诸如三边测量等应用的可听性。 特别地，PRS可以在指定或选定的定位子帧中传输。 可以选择定位子帧内的资源元素用于发送PRS，并且可以避免与指定的控制区域的冲突，用于发送小区特定参考信号的资源元素等。 用于传输PRS的资源元素可以根据计划或伪随机重用方案来选择。 此外，发射分集方案可以应用于PRS，以最小化将PRS引入传统设备的影响。 此外，未指定用于PRS传输的子帧的部分可以用于用户平面数据传输。