公开(公告)号：US08812680B2

公开(公告)日：2014-08-19

申请号：US13232193

申请日：2011-09-14

申请人： Shailesh Patil ,  Xinzhou Wu ,  Hua Wang ,  Junyi Li ,  Thomas J. Richardson

发明人： Shailesh Patil ,  Xinzhou Wu ,  Hua Wang ,  Junyi Li ,  Thomas J. Richardson

IPC分类号： G06F15/177 ,  H04W8/00 ,  H04W72/06

CPC分类号： H04W8/005 ,  H04W72/06

摘要： A method of operating a wireless device is provided in which the wireless device determines to use one grouping of peer discovery resources of a plurality of groupings of peer discovery resources based on one of a path loss or a distance to a base station. The plurality of groupings include a first grouping of resources having a first plurality of identical subsets of resources and a second grouping of resources having a second plurality of identical subsets of resources. Each of the first plurality of identical subsets of resources extends over at least one of a different time period or a different number of subcarriers than each of the second plurality of identical subsets of resources. The wireless device transmits a peer discovery signal on one subset of the identical subsets of said one grouping of peer discovery resources.

摘要翻译： 提供了一种操作无线设备的方法，其中无线设备基于路径损耗或到基站的距离之一确定使用多个对等体发现资源分组中的一个对等体发现资源分组。 多个分组包括具有第一多个相同的资源子集的资源的第一分组和具有第二多个相同的资源子集的资源的第二分组。 第一多个相同的资源子集中的每一个在与第二多个相同的资源子集中的每一个相比不同的时间段或不同数量的子载波中的至少一个中延伸。 无线设备在所述一组对等体发现资源的相同子集的一个子集上发送对等体发现信号。

公开(公告)号：US08630281B2

公开(公告)日：2014-01-14

申请号：US11775793

申请日：2007-07-10

申请人： Junyi Li ,  Rajiv Laroia ,  Saurabh Tavildar ,  Thomas Richardson ,  Xinzhou Wu ,  Leonard Grokop

发明人： Junyi Li ,  Rajiv Laroia ,  Saurabh Tavildar ,  Thomas Richardson ,  Xinzhou Wu ,  Leonard Grokop

IPC分类号： H04J3/06

CPC分类号： H04L67/1061 ,  H04J3/0638 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0037 ,  H04L12/18 ,  H04L67/1093 ,  H04W8/005 ,  H04W56/001 ,  H04W56/0015 ,  H04W84/18

摘要： Systems and methodologies are described that facilitate identifying peers based upon encoded signals during peer discovery in a peer to peer network. For example, direct signaling that partitions a time-frequency resource into a number of segments can be utilized to communicate an identifier within a peer discovery interval; thus, a particular segment selected for transmission can signal a portion of the identifier, while a remainder can be signaled based upon tones communicated within the selected segment. Moreover, a subset of symbols within the resource can be reserved (e.g., unused) to enable identifying and/or correcting timing offset. Further, signaling can be effectuated over a plurality of peer discovery intervals such that partial identifiers communicated during each of the peer discovery intervals can be linked (e.g., based upon overlapping bits and/or bloom filter information).

摘要翻译： 描述了系统和方法，其便于在对等网络中的对等体发现期间基于编码信号来识别对等体。 例如，可以利用将时间 - 频率资源分割成多个段的直接信令来在对等设备发现间隔内传送标识符; 因此，选择用于传输的特定片段可以发送标识符的一部分，而可以基于在所选择的段内通信的音调来发信号通知剩余部分。 此外，可以保留资源内的符号子集（例如，未使用的）以使得能够识别和/或校正定时偏移。 此外，可以在多个对等点发现间隔上实现信令，使得可以链接每个对等设备发现间隔期间通信的部分标识符（例如，基于重叠位和/或布隆过滤器信息）。

公开(公告)号：US08521194B2

公开(公告)日：2013-08-27

申请号：US11775461

申请日：2007-07-10

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

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

IPC分类号： H04W68/00

CPC分类号： H04W76/14 ,  H04W68/00 ,  H04W72/02 ,  H04W76/11

摘要： Systems and methodologies are described that facilitate paging within a peer-to-peer communication network. A first wireless terminal monitors the paging channel of a wide area network. When a second wireless terminal intends to establish a peer-to-peer connection with the first wireless terminal, the second wireless terminal generates a paging message and transfers the message to the WAN, which routes the paging message to a base station. The base station uses its paging channel to send a paging message to the target first wireless terminal. The paging message indicates to the target first wireless terminal that the second wireless terminal intends to establish a peer-to-peer connection with the first wireless terminal. The paging message may further include parameters to be used to establish the peer-to-peer connection. Upon reception of the paging message, the second wireless terminal sends a signal directly to the first wireless terminal to start the direct peer-to-peer communication.

摘要翻译： 描述了促进对等通信网络内的寻呼的系统和方法。 第一无线终端监视广域网的寻呼信道。 当第二无线终端意图与第一无线终端建立点对点连接时，第二无线终端生成寻呼消息，并将消息传送到WAN，该寻呼消息将寻呼消息路由到基站。 基站使用其寻呼信道向目标第一无线终端发送寻呼消息。 寻呼消息向目标第一无线终端指示第二无线终端旨在建立与第一无线终端的对等连接。 寻呼消息还可以包括用于建立对等连接的参数。 在接收到寻呼消息时，第二无线终端直接向第一无线终端发送信号以开始直接对等通信。

公开(公告)号：US20130083679A1

公开(公告)日：2013-04-04

申请号：US13252084

申请日：2011-10-03

申请人： Dilip Krishnaswamy ,  Xinzhou Wu ,  Junyi Li

发明人： Dilip Krishnaswamy ,  Xinzhou Wu ,  Junyi Li

IPC分类号： H04W4/12 ,  H04W24/00

CPC分类号： H04L67/322 ,  G08G1/093 ,  H04L1/0082 ,  H04L67/12 ,  H04W56/0035

摘要： Methods and devices for processing and retransmitting highway communication system transmissions include determining a reliability of a received message and including an indication of the reliability in retransmitted transmissions. Reliability of received messages may be based on a signal strength of the received peer transmission, comparison of the signal strength to a distance to the transmitter based on message contents, the age of the received message, the signal quality of the received message, and other parameters. An indication of the determined reliability may be included in retransmissions of the message to enable other vehicles and receiver units in the highway communication system to benefit from the reliability determination. Message reliability may be used as part of prioritizing messages for processing. Messages may be processed according to priority so that high priority messages are processed before lower priority messages.

摘要翻译： 用于处理和重新发送高速公路通信系统传输的方法和设备包括确定接收到的消息的可靠性并且包括重发传输中的可靠性的指示。 接收到的消息的可靠性可以基于接收到的对等体传输的信号强度，基于消息内容，信号强度与到发射机的距离的比较，接收消息的年龄，接收到的消息的信号质量等 参数。 所确定的可靠性的指示可以包括在消息的重传中，以使公路通信系统中的其他车辆和接收机单元能够从可靠性确定中受益。 消息可靠性可以用作优先处理消息的一部分。 可以根据优先级对消息进行处理，以便在较低优先级消息之前处理高优先级消息。

公开(公告)号：US20130064214A1

公开(公告)日：2013-03-14

申请号：US13232823

申请日：2011-09-14

申请人： Shailesh Patil ,  Hua Wang ,  Xinzhou Wu ,  Junyi Li ,  Thomas J. Richardson

发明人： Shailesh Patil ,  Hua Wang ,  Xinzhou Wu ,  Junyi Li ,  Thomas J. Richardson

IPC分类号： H04W72/04

CPC分类号： H04W52/243 ,  H04L1/0002 ,  H04L2001/0092 ,  H04W52/383

摘要： A method of operating a first wireless device includes receiving a grant from a base station for peer-to-peer communication with a second wireless device using time-frequency resources utilized by a third wireless device for WWAN communication with the base station. In addition, the method includes receiving a transmit power for the peer-to-peer communication with the grant. The transmit power is determined based on an interference that can be caused to transmissions received by the base station from the third wireless device. Furthermore, the method includes communicating with the second wireless device at a power less than or equal to the received transmit power using peer-to-peer communication on the time-frequency resources.

摘要翻译： 一种操作第一无线设备的方法包括从基站接收用于与第二无线设备的对等通信的许可，所述第二无线设备使用由第三无线设备用于与所述基站进行WWAN通信的时频资源。 此外，该方法包括：接收用于与该授权相对应的通信的发送功率。 基于可能由基站从第三无线设备接收的传输引起的干扰来确定发射功率。 此外，该方法包括使用时间 - 频率资源上的对等通信以小于或等于所接收的发射功率的功率与第二无线设备进行通信。

公开(公告)号：US08391879B2

公开(公告)日：2013-03-05

申请号：US12267888

申请日：2008-11-10

申请人： Junyi Li ,  Saurabh Tavildar ,  Rajiv Laroia ,  Gavin Horn ,  Ashwin Sampath ,  Xinzhou Wu

发明人： Junyi Li ,  Saurabh Tavildar ,  Rajiv Laroia ,  Gavin Horn ,  Ashwin Sampath ,  Xinzhou Wu

IPC分类号： H04W72/00

CPC分类号： H04W72/1278 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0053 ,  H04L5/0091 ,  H04L67/104 ,  H04W72/1226 ,  H04W84/18

摘要： Methods and apparatus well suited to decentralized traffic scheduling in wireless peer to peer network are described. An individual wireless terminal corresponding to a peer to peer connection makes a transmitter yielding or receiver yielding decision for a traffic slot. Quality of service information is disseminated as part of the scheduling control signaling. A scheduling control signal, e.g., a traffic transmission request signal or a traffic transmission request response signal, includes a pilot portion and a quality of service information portion. The pilot facilitates the recovery of the quality of service information by a plurality of different devices which may have different channel conditions with respect to the transmitter of the scheduling control signal. The different devices may benefit from utilizing the recovered quality of service information in making a yielding decision regarding traffic signaling in a traffic segment.

摘要翻译： 描述了非常适合无线对等网络中分散业务调度的方法和设备。 与对等连接相对应的单个无线终端为业务时隙做出发射机屈服或接收机容易判定。 服务质量信息作为调度控制信令的一部分传播。 诸如业务传输请求信号或业务传输请求响应信号的调度控制信号包括导频部分和服务质量信息部分。 导频有助于通过可能具有与调度控制信号的发射机不同的信道条件的多个不同设备来恢复业务质量信息。 不同的设备可以受益于利用恢复的服务质量信息作出关于业务段中的业务信令的收益决定。

公开(公告)号：US08385826B2

公开(公告)日：2013-02-26

申请号：US12465938

申请日：2009-05-14

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

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

IPC分类号： H04B7/00

CPC分类号： H04W72/12 ,  H04W8/005 ,  H04W84/18 ,  H04W88/06

摘要： Methods and apparatus well suited for supporting communications over different ranges in, for example, a peer to peer wireless communications system, are described. In the peer to peer network at least some of the types of signals, e.g., peer discovery signals and/or paging signals, are transmitted with no closed loop power control. An exemplary peer to peer timing structure includes air link resources allocated for a particular type of signaling in which the resources are segmented into multiple blocks which do not overlap in time, different ones of the multiple blocks being associated with different ranges. The characteristics of the basic transmission units of the multiple blocks based on range are different, e.g., tone size and symbol width are different. A wireless communications device implements the peer to peer timing structure and uses resources from different range based blocks at different times. Data traffic transmission units may be the same regardless of the range.

摘要翻译： 描述了非常适合于支持例如对等无线通信系统中的不同范围的通信的方法和装置。 在对等网络中，在没有闭环功率控制的情况下，发送至少一些类型的信号，例如对等体发现信号和/或寻呼信号。 示例性的对等定时结构包括为特定类型的信令分配的空中链路资源，其中资源被分段成多个不在时间上重叠的块，多个块中的不同的块与不同的范围相关联。 基于范围的多个块的基本传输单元的特征是不同的，例如，音调尺寸和符号宽度不同。 无线通信设备实现对等定时结构，并且在不同时间使用来自不同基于范围的块的资源。 无论范围如何，数据业务传输单元可能相同。

公开(公告)号：US08331488B2

公开(公告)日：2012-12-11

申请号：US12578251

申请日：2009-10-13

申请人： Cyril Measson ,  Alberto Vigato ,  Saurabh Tavildar ,  Junyi Li ,  Thomas Richardson ,  Xinzhou Wu

发明人： Cyril Measson ,  Alberto Vigato ,  Saurabh Tavildar ,  Junyi Li ,  Thomas Richardson ,  Xinzhou Wu

IPC分类号： H04L27/04

CPC分类号： H04L1/0075

摘要： Non-coherent modulation is used to communicate coding information via pilot signals using a first subset of resources, and coherent modulation is used to generate data signals. This allows for a stronger global code while keeping individual signaling complexity low. First and second communications devices communicate information using a set of communications resources. By performing non-coherent demodulation on pilot signals received on a first subset of the set of communications resources coding information is recovered. First and second channel estimates are generated from the pilot signals received on the first subset of the communications resources. Coherent demodulation is performed on data signals received on a second subset of the set of communications resources using the first and second channel estimates and the coding information to recover information communicated by the first communications device and to recover separate information communicated by the second communications device.

摘要翻译： 非相干调制用于通过使用第一资源子集的导频信号来传送编码信息，并使用相干调制来产生数据信号。 这允许更强的全局代码，同时保持单个信令复杂度较低。 第一和第二通信设备使用一组通信资源来传送信息。 通过对在该组通信资源的第一子集上接收的导频信号执行非相干解调，编码信息被恢复。 从在通信资源的第一子集上接收的导频信号产生第一和第二信道估计。 对使用第一和第二信道估计和编码信息的通信资源集合的第二子集上接收的数据信号执行相干解调，以恢复由第一通信设备传送的信息，并恢复由第二通信设备传送的单独信息。

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。