公开(公告)号：WO2011103347A3

公开(公告)日：2011-12-01

申请号：PCT/US2011025320

申请日：2011-02-17

Applicant: QUALCOMM INC ,  LI JUNYI ,  TAVILDAR SAURABH ,  JOVICIC ALEKSANDAR ,  RICHARDSON THOMAS

Inventor： LI JUNYI ,  TAVILDAR SAURABH ,  JOVICIC ALEKSANDAR ,  RICHARDSON THOMAS

IPC: H04W52/24 ,  H04W52/26 ,  H04W52/38 ,  H04W52/50 ,  H04W72/12

CPC classification number: H04W52/241 ,  H04W52/267 ,  H04W52/286

Abstract: Methods and apparatus of varying transmit power of signals for increasing system throughput and spectral reuse in an unlicensed spectrum are disclosed. One method includes transmitting from a first mobile device to a second mobile device a request to send (RTS) signal having a first transmit data power level based on a channel gain between the first mobile device and the second mobile device, receiving, at the first mobile device, a clear to send (CTS) signal from the second mobile device, and transmitting data at the first transmit data power level from the first mobile device to the second mobile device.

公开(公告)号：WO2010042342A2

公开(公告)日：2010-04-15

申请号：PCT/US2009058649

申请日：2009-09-28

Applicant: QUALCOMM INC ,  LAROIA RAJIV ,  LI JUNYI ,  RICHARDSON THOMAS J ,  WU XINZHOU ,  JOVICIC ALEKSANDAR

Inventor： LAROIA RAJIV ,  LI JUNYI ,  RICHARDSON THOMAS J ,  WU XINZHOU ,  JOVICIC ALEKSANDAR

IPC: H04J1/00

CPC classification number: H04W72/06 ,  H04W48/08 ,  H04W84/042 ,  H04W88/06

Abstract: Methods and apparatus for supporting multiple modes of communication operation, e.g., with different parameters and/or frequency bands being used in the different modes of operation are described. One or more adjustments are made based on a signal or signals received in a first frequency band from a second communications device, e.g., an access router with reliable timing. The communications device selects between and operates in either the first frequency band, e.g., a WAN frequency band, or in a second frequency band, e.g., a LAN frequency band. The WAN and LAN frequency bands may be non-overlapping. One or more parameters used in the second frequency band have a predetermined relationship to one or more parameters used for communications in the first frequency band making the adjustment based on the signal received in the first frequency band relevant and useful to support communications in the second frequency band.

Abstract translation: 描述了用于支持多种通信操作模式的方法和装置，例如在不同的操作模式中使用不同的参数和/或频带。 基于来自第二通信设备（例如具有可靠定时的接入路由器）在第一频带中接收的信号或信号进行一个或多个调整。 通信设备在第一频带（例如，WAN频带）中或在第二频带（例如，LAN频带）中进行选择和操作。 WAN和LAN频段可能不重叠。 在第二频带中使用的一个或多个参数与用于第一频带中的通信的一个或多个参数具有预定关系，从而基于在第一频带中接收到的信号进行调整，该信号相关并且有助于支持第二频率中的通信 带。

公开(公告)号：WO2009009539A3

公开(公告)日：2009-06-25

申请号：PCT/US2008069440

申请日：2008-07-08

Applicant: QUALCOMM INC ,  LAROIA RAJIV ,  JOVICIC ALEKSANDAR ,  WU XINZHOUS ,  LI JUNYI

Inventor： LAROIA RAJIV ,  JOVICIC ALEKSANDAR ,  WU XINZHOUS ,  LI JUNYI

IPC: H04B7/08

CPC classification number: H04B7/086 ,  H04W72/0406 ,  H04W72/046 ,  H04W72/08 ,  H04W84/18

Abstract: One feature provides for establishing an ad hoc peer-to-peer network over an existing channel allocation for another network. To mitigate interference between multiple peer-to-peer devices, a plurality of receiver chains in a receiver device may be configured with beamforming coefficients so as to focus reception in the direction of an intended signal from a transmitter device while minimizing reception from other directions. Similarly, the receiver device may also use a plurality of antennas and a transmitter chain to beamform in the direction of the transmitter device, thereby focusing its transmission toward the transmitter device. The receiver device may also notify nearby devices that it is employing a plurality of receive antennas. This information can be used by the nearby devices to more intelligently perform transmitter yielding. By utilizing beamforming information to make the transmitter and/or receiver yielding decision, better interference mitigation may be achieved.

Abstract translation: 一个特征提供了通过用于另一网络的现有信道分配来建立自组织对等网络。 为了减轻多个对等设备之间的干扰，接收机设备中的多个接收器链可以被配置成具有波束成形系数，以便在来自发射机设备的预期信号的方向上聚焦接收，同时最小化从其他方向的接收。 类似地，接收机设备还可以使用多个天线和发射机链在发射机设备的方向上波束成形，从而将其传输集中到发射机设备。 接收机设备还可以通知附近的设备它正在采用多个接收天线。 该信息可被附近的设备用于更智能地执行发射机的收发。 通过利用波束成形信息来使发射机和/或接收机产生决定，可以实现更好的干扰减轻。

公开(公告)号：WO2009009310A3

公开(公告)日：2009-03-26

申请号：PCT/US2008068439

申请日：2008-06-26

Applicant: QUALCOMM INC ,  LAROIA RAJIV ,  LI JUNYI ,  JOVICIC ALEKSANDAR ,  RICHARDSON THOMAS ,  WU XINZHOU

Inventor： LAROIA RAJIV ,  LI JUNYI ,  JOVICIC ALEKSANDAR ,  RICHARDSON THOMAS ,  WU XINZHOU

IPC: H04W56/00 ,  H04W84/18

CPC classification number: H04W56/001 ,  H04W4/06 ,  H04W8/005 ,  H04W48/16 ,  H04W68/00 ,  H04W84/06 ,  H04W84/18 ,  H04W92/18

Abstract: Methods and apparatus related to peer to peer communication networks are described. A peer to peer timing structure is implemented which includes recurring peer discovery intervals and traffic intervals. Some embodiments further include recurring paging intervals for peer to peer pages. A wireless communications device, supporting peer to peer communications and storing information defining the timing structure, determines a time reference point, facilitating a coarse level of synchronization with respect to the timing structure. The time reference point is determined based on a broadcast signal received from a communications device, e.g., a satellite, base station, or beacon signal transmitter. Multiple peer to peer wireless communications devices in a local vicinity thus obtain the same basic understanding as to the current relative point in time with respect to a common recurring peer to peer timing structure. Peer to peer timing synchronization is further refined based on received signals communicated between peers.

Abstract translation: 描述了与对等通信网络相关的方法和设备。 实现了对等定时结构，包括循环对等体发现间隔和业务间隔。 一些实施例还包括对等页面的循环寻呼间隔。 支持对等通信并且存储定义定时结构的信息的无线通信设备确定时间参考点，有助于相对于定时结构的粗略级别的同步。 基于从通信设备（例如，卫星，基站或信标信号发射机）接收的广播信号来确定时间参考点。 本地区域中的多个对等无线通信设备因此获得与当前相对时间点相对于常见的重复对等定时结构相同的基本理解。 基于在对等体之间传送的接收信号，对等定时同步进一步改进。