公开(公告)号：US20160088584A1

公开(公告)日：2016-03-24

申请号：US14491723

申请日：2014-09-19

Applicant: QUALCOMM Incorporated

Inventor： Shrinivas Shrikant KUDEKAR ,  Ravi PALANKI ,  Thomas Joseph RICHARDSON, IV

IPC: H04W64/00 ,  H04W4/04

CPC classification number: H04W64/003 ,  G01S5/0252 ,  H04W4/02 ,  H04W4/33

Abstract: Methods and systems are presented for estimating a location of an access point (AP) associated with an indoor environment. In some embodiments a method includes obtaining a coarse set of signal information associated with the indoor environment. The method may also include obtaining ranging measurements based on signals received from the AP, computing at least one coarse location estimate of the AP based on the received coarse set of signal information and the ranging measurements, receiving a fine set of signal information associated with the at least one coarse location estimate of the AP, and computing at least one fine location estimate of the AP based on the received fine set of signal information and the ranging measurements, wherein the at least one fine location estimate of the AP is more accurate than the at least one coarse location estimate of the AP.

Abstract translation: 呈现用于估计与室内环境相关联的接入点（AP）的位置的方法和系统。 在一些实施例中，一种方法包括获得与室内环境相关联的粗略的一组信号信息。 该方法还可以包括基于从AP接收的信号获得测距测量，基于所接收的粗略的信号信息集和测距测量来计算AP的至少一个粗略位置估计，接收与该相关联的信号信息相关联的精细集合 AP的至少一个粗略位置估计，以及基于接收到的精细信号信息集和测距测量来计算AP的至少一个精细位置估计，其中AP的至少一个精细位置估计比 AP的至少一个粗略位置估计。

公开(公告)号：US20200267564A1

公开(公告)日：2020-08-20

申请号：US16866275

申请日：2020-05-04

Applicant: QUALCOMM Incorporated

Inventor： Ravi PALANKI ,  Avneesh AGRAWAL ,  Naga BHUSHAN

IPC: H04W16/14 ,  H04W24/02 ,  H04W76/25 ,  H04W76/10 ,  H04W28/16 ,  H04W76/14

Abstract: Techniques for centralized control of peer-to-peer (P2P) communication and centralized control of femto cell operation are described. For centralized control of P2P communication, a designated network entity (e.g., a base station) may control P2P communication of stations (e.g., UEs) located within its coverage area. The designated network entity may identify a UE located within coverage of a femto cell but unable to access the femto cell due to restricted association. The designated network entity may deactivate the femto cell to allow the UE to communicate with another cell.

公开(公告)号：US20180032516A1

公开(公告)日：2018-02-01

申请号：US15782355

申请日：2017-10-12

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha MALLIK ,  Renqiu WANG ,  Ravi PALANKI ,  Naga BHUSHAN

IPC: G06F17/30

CPC classification number: H04L67/1063 ,  G06F16/438 ,  H04L67/1061 ,  H04L67/1068 ,  H04W8/005 ,  H04W76/14 ,  H04W84/18

Abstract: Techniques for performing network-assisted peer discovery to enable peer-to-peer (P2P) communication are described. In one design, a device registers with a network entity (e.g., a directory agent) so that the presence of the device and possibly other information about the device can be made known to the network entity. The network entity collects similar information from other devices. The device sends a request to the network entity, e.g., during or after registration. The request includes information used to match the device with other devices, e.g., information about service(s) provided by the device and/or service(s) requested by the device. The directory agent matches requests received from all devices, determines a match between the device and at least one other device, and sends a notification to perform peer discovery. The device performs peer discovery in response to receiving the notification from the network entity.

公开(公告)号：US20150055545A1

公开(公告)日：2015-02-26

申请号：US14530381

申请日：2014-10-31

Applicant: QUALCOMM Incorporated

Inventor： Ravi PALANKI ,  Kapil Bhattad ,  Naga Bhushan ,  Aamod Dinkar Khandekar ,  Tingfang Ji ,  Juan Montojo

IPC: H04J3/08 ,  H04W4/06 ,  H04L5/00 ,  H04B7/155

CPC classification number: H04L1/0023 ,  H04B7/15557 ,  H04B7/2606 ,  H04J3/08 ,  H04L1/0001 ,  H04L5/0037 ,  H04W4/06 ,  H04W28/00

Abstract: Techniques for supporting operation of relay stations in wireless communication systems are described. In an aspect, a bitmap may be sent by a base station and/or a relay station to identify subframes of at least two types in multiple radio frames. For example, the bitmap may indicate whether each subframe covered by the bitmap is of a first type or a second type. UEs may use the bitmap to control their operation. For example, a UE may perform channel estimation or measurement for the subframes of the first type and may skip channel estimation and measurement for the subframes of the second type. In another aspect, a base station may transmit data and/or control information on resources not used by a relay station to transmit a reference signal. This may avoid interference to the reference signal from the relay station, which may improve performance for UEs communicating with the relay station.

Abstract translation: 描述了用于支持无线通信系统中的中继站的操作的技术。 在一方面，位图可以由基站和/或中继站发送以识别多个无线电帧中的至少两种类型的子帧。 例如，位图可以指示位图所覆盖的每个子帧是否是第一类型或第二类型。 UE可以使用位图来控制它们的操作。 例如，UE可以对第一类型的子帧执行信道估计或测量，并且可以跳过第二类型的子帧的信道估计和测量。 在另一方面，基站可以发送关于中继站未使用的资源的数据和/或控制信息，以发送参考信号。 这可以避免对来自中继站的参考信号的干扰，这可以提高与中继站通信的UE的性能。

公开(公告)号：US20190199786A1

公开(公告)日：2019-06-27

申请号：US16290415

申请日：2019-03-01

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha MALLIK ,  Ravi PALANKI ,  Durga Prasad MALLADI ,  Naga BHUSHAN

IPC: H04L29/08 ,  H04W8/00

CPC classification number: H04L67/104 ,  H04L67/1063 ,  H04L67/1068 ,  H04W8/005

Abstract: Techniques for performing peer discovery in a wireless network are described. A device may perform peer discovery to detect and identify other devices of interest. In an aspect, the device may perform peer discovery based on a hybrid mode that includes autonomous peer discovery and network-assisted peer discovery. In another aspect, the device may perform peer discovery based on a push mode and a pull mode. For the push mode, the device may occasionally transmit and/or receive a peer detection signal. For the pull mode, the device may transmit and/or receive a peer discovery request when triggered. In yet another aspect, the device may perform event-triggered peer discovery (e.g., for the pull mode). In yet another aspect, the device may perform peer discovery using both a downlink spectrum and an uplink spectrum. In yet another aspect, the device may transmit a peer detection signal in a manner to improve detection and/or increase payload.

公开(公告)号：US20180234830A1

公开(公告)日：2018-08-16

申请号：US15951126

申请日：2018-04-11

Applicant: QUALCOMM Incorporated

Inventor： Renqiu WANG ,  Siddhartha MALLIK ,  Ravi PALANKI ,  Naga BHUSHAN ,  Tao LUO ,  Durga Prasad MALLADI

IPC: H04W8/00 ,  H04W56/00 ,  H04W72/04 ,  H04L29/08 ,  H04W4/02 ,  H04L5/00 ,  H04W72/00 ,  H04W92/18 ,  H04W76/10

CPC classification number: H04W8/005 ,  H04L5/0053 ,  H04L67/104 ,  H04W56/002 ,  H04W56/0025 ,  H04W72/00 ,  H04W72/0453 ,  H04W76/10 ,  H04W92/18

Abstract: Techniques for performing peer discovery to enable peer-to-peer (P2P) communication are disclosed. In an aspect, a proximity detection signal used for peer discovery may be generated based on one or more physical channels and/or signals used in a wireless network. In one design, a user equipment (UE) may generate a proximity detection signal occupying at least one resource block based on a SC-FDMA modulation technique. In another design, the UE may generate a proximity detection signal occupying at least one resource block based on an OFDMA modulation technique. The UE may generate SC-FDMA symbols or OFDMA symbols in different manners for different physical channels. In yet another design, the UE may generate a proximity detection signal including a primary synchronization signal and a secondary synchronization signal. For all designs, the UE may transmit the proximity detection signal to indicate its presence and to enable other UEs to detect the UE.

公开(公告)号：US20140011507A1

公开(公告)日：2014-01-09

申请号：US14024601

申请日：2013-09-11

Applicant: Qualcomm Incorporated

Inventor： Kapil BHATTAD ,  Ravi PALANKI

IPC: H04L5/00

CPC classification number: H04L5/0073 ,  H04L1/0001 ,  H04L1/1867 ,  H04L5/0053 ,  H04W28/04 ,  H04W28/18 ,  H04W72/0406 ,  H04W72/082

Abstract: Systems and methodologies are described that facilitate improved resource partitioning and interference management in a wireless communication system. Techniques are described herein for the transmission and use of various types of signaling, such as Access Request commands, Reverse Link Special Resource Utilization Message (R-SRUM) signaling, Forward Link Special Resource Utilization Message (F-SRUM) signaling, and the like, for managing interference associated with range extension, restricted association networks, and other jamming scenarios. As described herein, downlink resource coordination and interference management are accomplished through the use of Access Request or R-SRUM signaling conducted in a unicast or broadcast fashion, and uplink resource coordination and interference management are accomplished through the use of F-SRUM signaling. As further described herein, a clean communication channel such as a Low Reuse Preamble (LRP) channel can be utilized for interference management signaling and/or leveraged for determining timing of various signaling messages.

Abstract translation: 描述了有助于在无线通信系统中改进资源划分和干扰管理的系统和方法。 本文描述了用于传输和使用各种类型的信令的技术，诸如接入请求命令，反向链路特殊资源利用消息（R-SRUM）信令，前向链路特殊资源利用消息（F-SRUM）信令等等 用于管理与范围扩展相关的干扰，受限关联网络和其他干扰场景。 如本文所述，通过使用以单播或广播方式进行的接入请求或R-SRUM信令来实现下行链路资源协调和干扰管理，并且通过使用F-SRUM信令来实现上行链路资源协调和干扰管理。 如本文进一步描述的，诸如低重用前导码（LRP）信道的干净通信信道可以用于干扰管理信令和/或用于确定各种信令消息的定时。

公开(公告)号：US20180139620A1

公开(公告)日：2018-05-17

申请号：US15868880

申请日：2018-01-11

Applicant: QUALCOMM Incorporated

Inventor： Ravi PALANKI ,  Avneesh AGRAWAL ,  Naga BHUSHAN

IPC: H04W16/14 ,  H04W28/16 ,  H04W84/04 ,  H04W92/18 ,  H04W48/08

CPC classification number: H04W16/14 ,  H04W24/02 ,  H04W28/16 ,  H04W48/08 ,  H04W76/10 ,  H04W76/14 ,  H04W76/25 ,  H04W84/045 ,  H04W88/04 ,  H04W92/18

Abstract: Techniques for centralized control of peer-to-peer (P2P) communication and centralized control of femto cell operation are described. For centralized control of P2P communication, a designated network entity (e.g., a base station) may control P2P communication of stations (e.g., UEs) located within its coverage area. The designated network entity may receive an indication of a first station (e.g., a UE) desiring to communicate with a second station (e.g., another UE). The designated network entity may determine whether or not to select peer-to-peer communication for the first and second stations, e.g., based on the quality of their communication link. The designated network entity may assign resources to the stations if peer-to-peer communication is selected. For centralized control of femto cell operation, the designated network entity may control the operation of femto cells (e.g., may activate or deactivate femto cells) within its coverage area.

公开(公告)号：US20160112983A1

公开(公告)日：2016-04-21

申请号：US14983152

申请日：2015-12-29

Applicant: QUALCOMM INCORPORATED

Inventor： Tingfang JI ,  Ravi PALANKI ,  Peter GAAL ,  Hao XU ,  Yongbin WEI

IPC: H04W64/00 ,  G01S5/02

CPC classification number: H04W64/00 ,  G01S1/20 ,  G01S5/02 ,  H04L5/0048 ,  H04W24/02 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/0446 ,  H04W88/085

Abstract: A method of wireless communication includes receiving position location reference signals (PRSs) from multiple remote radio heads (RRHs) and a macro eNodeB having a same physical cell identity (PCI). Each PRS is a same PRS. Additionally, the PRSs from the multiple RRHs are received on subframes that are different from subframes used by the macro eNodeB. Furthermore, each PRS does not indicate a source of transmission. The method also includes determining a time difference between the received PRSs.

Abstract translation: 无线通信的方法包括从多个远程无线电头（RRH）和具有相同物理小区标识（PCI）的宏eNodeB接收位置定位参考信号（PRS）。 每个PRS是相同的PRS。 此外，来自多个RRH的PRS在与宏eNodeB所使用的子帧不同的子帧上被接收。 此外，每个PRS不表示传输源。 该方法还包括确定所接收的PRS之间的时间差。

公开(公告)号：US20150382346A1

公开(公告)日：2015-12-31

申请号：US14835083

申请日：2015-08-25

Applicant: QUALCOMM Incorporated

Inventor： Aamod D. KHANDEKAR ,  Ravi PALANKI ,  Peter GAAL ,  Tingfang JI ,  Naga BHUSHAN ,  Juan MONTOJO

IPC: H04W72/04 ,  H04W72/08

CPC classification number: H04W72/0446 ,  H04L1/0001 ,  H04L1/0026 ,  H04L1/0027 ,  H04L5/0007 ,  H04L5/1469 ,  H04L5/16 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/082

Abstract: Techniques for supporting communication in an asynchronous TDD wireless network are described. In an aspect, downlink transmissions and uplink transmissions may be sent on different carriers in an asynchronous TDD wireless network to mitigate interference. In one design, a station (e.g., a base station or a UE) may send a first transmission on a first carrier in a first time period and may receive a second transmission on a second carrier in a second time period. The station may only transmit, or only receive, or neither in each time period. In one design, allocation of carriers for the downlink and uplink may be performed when strong interference is detected, e.g., by a base station or a UE. When strong interference is not detected, the first and second carriers may each be used for both the downlink and uplink.

Abstract translation: 描述了用于支持异步TDD无线网络中的通信的技术。 在一方面，下行链路传输和上行链路传输可以在异步TDD无线网络中的不同载波上发送以减轻干扰。 在一种设计中，站（例如，基站或UE）可以在第一时间段内在第一载波上发送第一传输，并且可以在第二时间段内在第二载波上接收第二传输。 车站只能在每个时段内传送，也可以只接收。 在一种设计中，例如由基站或UE检测到强干扰时，可以执行用于下行链路和上行链路的载波的分配。 当没有检测到强干扰时，第一和第二载波可以分别用于下行链路和上行链路。