公开(公告)号：US08325671B2

公开(公告)日：2012-12-04

申请号：US11851327

申请日：2007-09-06

申请人： Junyi Li ,  Xinzhou Wu

发明人： Junyi Li ,  Xinzhou Wu

IPC分类号： H04W4/00

CPC分类号： H04L5/0037 ,  H04L5/0023

摘要： Methods and apparatus are described for improved utilization of air link resources. A base station includes at least one of a plurality of receive antenna elements and a plurality of transmit antenna elements for communicating with a wireless terminal. The base station generates channel estimation vectors corresponding to wireless terminals using the base station, where a generated channel estimation vector includes different elements corresponding to different base station antenna elements. The base station determines a level of orthogonality between pairs of channel estimation vectors corresponding to different wireless terminals. At least some of the segments to be assigned by the base station are substantially overlapping, e.g., the segments overlap fully or to a high degree. Wireless terminal pairs which have substantially orthogonal channel estimation vectors are matched and assigned to substantially overlapping segments, and the power level associated with the segments is controlled to be substantially the same.

摘要翻译： 描述了用于改善空中链路资源利用的方法和装置。 基站包括用于与无线终端通信的多个接收天线元件和多个发射天线元件中的至少一个。 基站使用基站生成与无线终端对应的信道估计向量，其中生成的信道估计向量包括与不同的基站天线元素对应的不同的元素。 基站确定对应于不同无线终端的信道估计向量对之间的正交性水平。 要由基站分配的至少一些段基本上重叠，例如，段完全重叠或高度重叠。 具有基本上正交的信道估计向量的无线终端对被匹配并分配给基本上重叠的段，并且与段相关联的功率电平被控制为基本上相同。

公开(公告)号：US08320297B2

公开(公告)日：2012-11-27

申请号：US12336620

申请日：2008-12-17

申请人： Junyi Li ,  Xinzhou Wu ,  Saurabh Tavildar

发明人： Junyi Li ,  Xinzhou Wu ,  Saurabh Tavildar

IPC分类号： G01R31/08

CPC分类号： H04W72/085 ,  H04B17/336 ,  H04W52/24 ,  H04W52/383 ,  H04W72/082 ,  H04W84/18

摘要： Methods and apparatus related to reuse of a wireless resource are described. Various methods and apparatus are well suited to wireless communications systems lacking centralized control, e.g., an ad hoc peer to peer wireless communications system. A wireless device, corresponding to a second connection, evaluates whether or not it can reuse a resource associated with a first connection. The first connection is, e.g., an existing active connection and the second connection is, e.g., a potential connection. The wireless device receives one or more control signals from one or more first connection devices. The wireless device determines, based on the received control signals, one or more estimated SINRs characterizing expected results in the system if the two connections should use the same resource concurrently. The wireless device makes a resource reuse decision based on the determined estimated one or more SINRs and a threshold criteria.

摘要翻译： 描述与无线资源的重用有关的方法和装置。 各种方法和装置非常适合于缺乏集中控制的无线通信系统，例如，自组织对等无线通信系统。 对应于第二连接的无线设备评估其是否可以重用与第一连接相关联的资源。 第一连接是例如现有的活动连接，第二连接是例如潜在连接。 无线设备从一个或多个第一连接设备接收一个或多个控制信号。 如果两个连接同时使用相同的资源，则无线设备基于所接收的控制信号来确定表征系统中预期结果的一个或多个估计SINR。 无线设备基于所确定的估计的一个或多个SINR和阈值标准来做出资源重用决定。

公开(公告)号：US08160602B2

公开(公告)日：2012-04-17

申请号：US11943504

申请日：2007-11-20

申请人： Xinzhou Wu ,  Sundeep Rangan ,  Prashanth Hande ,  Arnab Das ,  Junyi Li

发明人： Xinzhou Wu ,  Sundeep Rangan ,  Prashanth Hande ,  Arnab Das ,  Junyi Li

IPC分类号： H04W88/02

CPC分类号： H04W72/1231 ,  H04W72/1268

摘要： Systems and methodologies are described that facilitate scheduling uplink transmissions. For instance, a time sharing scheme can be utilized such that differing mobile devices can be scheduled to transmit during differing time slots; however, it is also contemplated that a static scheme can be employed. Pursuant to an illustration, an interference budget can be combined with a time varying weighting factor associated with a base station; the weighting factor can be predefined and/or adaptively adjusted (e.g., based upon a load balancing mechanism). Moreover, the weighted interference budget can be leveraged for selecting mobile devices for uplink transmission (e.g., based at least in part upon path loss ratios of the mobile devices). Further, disparate interference budgets can be utilized by differing channels of a sector at a particular time. Also, for example, a base station can assign a loading factor to be utilized by wireless terminal(s) for generating channel quality report(s).

公开(公告)号：US08160039B2

公开(公告)日：2012-04-17

申请号：US12268158

申请日：2008-11-10

申请人： Junyi Li ,  Rajiv Laroia ,  Saurabh Tavildar ,  Xinzhou Wu

发明人： Junyi Li ,  Rajiv Laroia ,  Saurabh Tavildar ,  Xinzhou Wu

IPC分类号： H04W4/00

CPC分类号： H04L25/03343 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0224 ,  H04L2025/03414

摘要： Methods and apparatus for performing peer to peer communications with access routers and non-access router peer devices are described. An access terminal generates a channel estimate estimating the channel between the access terminal and an access router. For at least some communication with the access router, a channel compensation operation is performed on a symbol to be transmitted prior to its transmission to the access router. In contrast, symbols transmitted to other access terminals are not subject to a channel compensation operation prior to transmission with the receiving access terminal being responsible for implementing a channel compensation operation on the received signal.

摘要翻译： 描述了用于与接入路由器和非接入路由器对等设备进行对等通信的方法和装置。 接入终端生成估计接入终端与接入路由器之间的信道的信道估计。 对于与接入路由器的至少一些通信，在要传输到接入路由器之前要对要发送的符号执行信道补偿操作。 相反，发送到其他接入终端的符号在接收接入终端负责对接收到的信号执行信道补偿操作之前不进行信道补偿操作。

公开(公告)号：US08140103B2

公开(公告)日：2012-03-20

申请号：US12142588

申请日：2008-06-19

申请人： Xinzhou Wu ,  Junyi Li ,  Rajiv Laroia ,  Saurabh Tavildar

发明人： Xinzhou Wu ,  Junyi Li ,  Rajiv Laroia ,  Saurabh Tavildar

IPC分类号： H04B7/00

CPC分类号： H04W52/46 ,  H04W52/246 ,  H04W52/325 ,  H04W52/383 ,  H04W72/1226 ,  H04W84/18

摘要： An ad hoc peer-to-peer network is provided in which a transmitter wireless terminal is configured to establish a peer-to-peer communication link with a receiver wireless terminal over a shared communication channel. The transmitter wireless terminal may scale its transmit power as a function of a channel gain for the communication channel between the transmitter and receiver wireless terminals. The scaled transmit power may be utilized by the transmitter and receiver wireless terminals to perform link scheduling over the communication channel. For instance, the scaled transmit power may be used by the transmitter wireless terminal to perform a transmitter yielding with other neighboring transmitter wireless terminals utilizing the shared communication channel. Similarly, the scaled transmit power may be used by the receiver wireless terminal to perform receiver yielding with other neighboring receiver wireless terminal utilizing the shared communication channel.

摘要翻译： 提供了一种ad hoc对等网络，其中发射机无线终端被配置为通过共享通信信道与接收机无线终端建立点对点通信链路。 发射机无线终端可以根据发射机和接收机无线终端之间的通信信道的信道增益来扩展其发射功率。 发射机和接收机无线终端可以利用缩放的发射功率在通信信道上执行链路调度。 例如，发射机无线终端可以使用缩放的发射功率来执行利用共享通信信道的其他相邻发射机无线终端的发射机。 类似地，缩放的发射功率可以由接收机无线终端使用，以利用共享通信信道与其他相邻的接收机无线终端一起执行接收机产生。

公开(公告)号：US08134924B2

公开(公告)日：2012-03-13

申请号：US11945746

申请日：2007-11-27

申请人： Junyi Li ,  Rajiv Laroia ,  Thomas Richardson ,  Xinzhou Wu

发明人： Junyi Li ,  Rajiv Laroia ,  Thomas Richardson ,  Xinzhou Wu

IPC分类号： G08C15/00 ,  H04J3/16 ,  H04L12/56

CPC分类号： H04W72/1263 ,  H04W28/22

摘要： Methods and apparatus related to scheduling decisions of a peer to peer communications device for transmission into traffic intervals are described. A first peer to peer communications device maintains a set of information which allows it to base a scheduling decision for a current traffic interval upon prior performance in a prior traffic interval in which users of other connections were also operating. In some embodiments, the set of information includes a list of device or connection identifiers which the first peer to peer communications device has previously determined to have corresponded to a prior traffic interval in which the first peer to peer device had a low determined data rate. In some embodiments, the set of information includes: (i) a list of device or connection identifiers corresponding to prior traffic intervals and (ii) first peer to peer device data rate information associated with the prior traffic intervals

摘要翻译： 描述与对等通信设备的调度决策相关的传输到业务间隔的方法和设备。 第一对等通信设备维护一组信息，其允许其基于在其他连接的用户也在操作的先前业务间隔中的先前性能的当前业务间隔的调度决定。 在一些实施例中，该组信息包括第一对等通信设备先前已经确定已对应于第一对等设备具有低确定数据速率的先前业务间隔的设备或连接标识符的列表。 在一些实施例中，该组信息包括：（i）对应于先前业务间隔的设备或连接标识符的列表，以及（ii）与先前业务间隔相关联的第一对等设备数据速率信息

公开(公告)号：US20120057475A1

公开(公告)日：2012-03-08

申请号：US12875321

申请日：2010-09-03

申请人： Xinzhou Wu ,  Junyi Li ,  Thomas Richardson ,  Shailesh Patil

发明人： Xinzhou Wu ,  Junyi Li ,  Thomas Richardson ,  Shailesh Patil

IPC分类号： H04L12/26

CPC分类号： H04W99/00 ,  H04K3/226 ,  H04K3/45 ,  H04K3/84 ,  H04K2203/18 ,  H04W8/005 ,  H04W24/10

摘要： A method, an apparatus, and a computer program product are provided in which a signal is received on a resource, a signal quality of the signal is determined, a signal energy of the signal is determined, and the resource is jammed based on the signal quality and the signal energy by transmitting a signal on the resource.

摘要翻译： 提供了一种在资源上接收信号的方法，装置和计算机程序产品，确定信号的信号质量，确定信号的信号能量，并且基于信号卡住资源 通过在资源上传输信号来提高质量和信号能量。

公开(公告)号：US08112108B2

公开(公告)日：2012-02-07

申请号：US12336638

申请日：2008-12-17

申请人： Junyi Li ,  Xinzhou Wu ,  Saurabh Tavildar

发明人： Junyi Li ,  Xinzhou Wu ,  Saurabh Tavildar

IPC分类号： H04B7/00

CPC分类号： H04W52/383

摘要： Methods and apparatus related to reuse of a wireless resource are described. Various methods and apparatus are well suited to wireless communications systems lacking centralized control, e.g., an ad hoc peer to peer wireless communications system. A first wireless device of a first connection generates and transmits one or more control signals to be used by a wireless device of a second connection to make a resource reuse decision. The first connection is, e.g., an existing active connection and the second connection is, e.g., a potential connection. A transmission power level of a control signal is set based upon a predetermined relationship to at least one other signal previously communicated on the first connection, e.g., a peer discovery or paging signal. In some embodiments, the control signal is a single tone signal. The transmitted control signal facilitates the estimation of an expected SINR by a device of the second connection.

摘要翻译： 描述与无线资源的重用有关的方法和装置。 各种方法和装置非常适合于缺乏集中控制的无线通信系统，例如，自组织对等无线通信系统。 第一连接的第一无线设备生成并发送要由第二连接的无线设备使用的一个或多个控制信号以进行资源重用决定。 第一连接是例如现有的活动连接，第二连接是例如潜在连接。 基于与先前在第一连接上通信的至少一个其他信号（例如，对等设备发现或寻呼信号）的预定关系来设置控制信号的传输功率电平。 在一些实施例中，控制信号是单个音调信号。 传输的控制信号有助于通过第二连接的设备来估计预期SINR。

公开(公告)号：US20120020234A1

公开(公告)日：2012-01-26

申请号：US13250930

申请日：2011-09-30

申请人： Rajiv Laroia ,  Junyi Li ,  Thomas Richardson ,  Xinzhou Wu ,  Aleksandar Jovicic

发明人： Rajiv Laroia ,  Junyi Li ,  Thomas Richardson ,  Xinzhou Wu ,  Aleksandar Jovicic

IPC分类号： H04W24/00

CPC分类号： H04W72/1242 ,  H04W28/22 ,  H04W48/08 ,  H04W52/16 ,  H04W52/18 ,  H04W52/267 ,  H04W72/0473 ,  H04W72/12 ,  H04W76/14 ,  H04W92/18

摘要： Methods and apparatus related to peer to peer communication networks are described. Embodiments directed to methods and apparatus for establishing traffic data transmission rates and/or transmission power levels between wireless terminals is described. Embodiments direct to methods and apparatus of making decisions whether or not to transmit as a function of the received power of the received response signals are also described. Transmission of pilot signals after granting of a transmission request and a decision to transmit traffic data has been made occurs in some embodiments. Rate information to be used in determining a traffic rate may be received in response to the pilot signal from a peer to peer (P2P) device.

摘要翻译： 描述了与对等通信网络相关的方法和设备。 描述了用于在无线终端之间建立业务数据传输速率和/或传输功率电平的方法和装置的实施例。 还描述了根据接收到的响应信号的接收功率来决定是否发送的方法和装置的实施例。 在一些实施例中已经发生了在授予发送请求之后的导频信号的传输和传送业务数据的决定。 可以响应于来自对等（P2P）设备的导频信号来接收用于确定业务速率的速率信息。

公开(公告)号：US08077638B2

公开(公告)日：2011-12-13

申请号：US12146888

申请日：2008-06-26

申请人： Junyi Li ,  Rajiv Laroia ,  Saurabh Tavildar ,  Thomas Richardson ,  Xinzhou Wu ,  Sanjay Shakkottai

发明人： Junyi Li ,  Rajiv Laroia ,  Saurabh Tavildar ,  Thomas Richardson ,  Xinzhou Wu ,  Sanjay Shakkottai

IPC分类号： H04J1/16 ,  H04L12/56

CPC分类号： H04W4/20

摘要： Methods and apparatus related to scheduling traffic slots in a wireless communications system, e.g., an ad hoc peer to peer communications network are described. An implemented timing structure includes multiple traffic transmission slots and multiple request blocks with different priorities corresponding to a traffic transmission slot. A wireless terminal determines its own block priority level. If a wireless terminal's determined block priority level is the highest block priority level the wireless terminal is allowed to transmit a traffic transmission request in the highest traffic transmission request block; otherwise, the wireless terminal is restricted from transmitting a traffic transmission request in the highest priority request block. A wireless terminal monitors for request and/or request response activity corresponding to other connections high priority block signaling, and uses the collected information to determine its own block priority.

摘要翻译： 描述了在无线通信系统（例如，自组织对等通信网络）中调度业务时隙的方法和装置。 实施的定时结构包括多个业务传输时隙和具有与业务传输时隙对应的不同优先级的多个请求块。 无线终端确定其自身的块优先级。 如果无线终端确定的块优先级是最高块优先级，则允许无线终端在最高业务传输请求块中发送业务传输请求; 否则，无线终端被限制在最高优先级请求块中发送业务传输请求。 无线终端监视与其他连接高优先级块信令相对应的请求和/或请求响应活动，并且使用所收集的信息来确定其自身的块优先级。