公开(公告)号：US20100309781A1

公开(公告)日：2010-12-09

申请号：US12477363

申请日：2009-06-03

申请人： Hua Wang ,  Xinzhou Wu ,  Thomas Richardson ,  Pramod Viswanath ,  Junyi Li ,  Saurabh Tavildar

发明人： Hua Wang ,  Xinzhou Wu ,  Thomas Richardson ,  Pramod Viswanath ,  Junyi Li ,  Saurabh Tavildar

IPC分类号： H04L12/24 ,  H04B7/02

CPC分类号： H04B7/0871 ,  H04B7/0413 ,  H04B7/086

摘要： Aspects describe different multiple antenna techniques that can be utilized in a peer-to-peer network based on a network congestion level. A MIMO scheme where a transmitter sends to a receiver multiple spatial streams at substantially the same time in the same traffic segment can be utilized when network congestion level is low. A receiver beam forming scheme where transmitter sends a single stream in a traffic segment and receiver uses multiple receive antennas to maximize signal to noise ratio can be utilized when network congestion level is high. The connection pair (transmitter and receiver) occupy more control resources in the MIMO scheme than the receiver beam forming scheme. The decision related to which technique to utilize can be made at about the same time as a communication is initiated. Further, if network conditions change during a communication, the antenna technique that is utilized can be switched to a different technique during the communication exchange.

摘要翻译： 方面描述了可以基于网络拥塞级别在对等网络中使用的不同的多天线技术。 当网络拥塞级别低时，可以利用MIMO方案，其中发射机在同一业务段中基本上同时间向接收机发送多个空间流。 一种接收机波束形成方案，其中发射机在业务段和接收机中发送单个流使用多个接收天线以最大化信噪比，可以在网络拥塞度高时使用。 连接对（发射机和接收机）在MIMO方案中占据比接收机波束形成方案更多的控制资源。 在通信开始的同时，可以进行与使用哪种技术有关的决定。 此外，如果在通信期间网络条件改变，则在通信交换期间，所利用的天线技术可以被切换到不同的技术。

公开(公告)号：US08238234B2

公开(公告)日：2012-08-07

申请号：US12477363

申请日：2009-06-03

申请人： Hua Wang ,  Xinzhou Wu ,  Thomas Richardson ,  Pramod Viswanath ,  Junyi Li ,  Saurabh Tavildar

发明人： Hua Wang ,  Xinzhou Wu ,  Thomas Richardson ,  Pramod Viswanath ,  Junyi Li ,  Saurabh Tavildar

IPC分类号： H04L12/56

CPC分类号： H04B7/0871 ,  H04B7/0413 ,  H04B7/086

摘要： Aspects describe different multiple antenna techniques that can be utilized in a peer-to-peer network based on a network congestion level. A MIMO scheme where a transmitter sends to a receiver multiple spatial streams at substantially the same time in the same traffic segment can be utilized when network congestion level is low. A receiver beam forming scheme where transmitter sends a single stream in a traffic segment and receiver uses multiple receive antennas to maximize signal to noise ratio can be utilized when network congestion level is high. The connection pair (transmitter and receiver) occupy more control resources in the MIMO scheme than the receiver beam forming scheme. The decision related to which technique to utilize can be made at about the same time as a communication is initiated. Further, if network conditions change during a communication, the antenna technique that is utilized can be switched to a different technique during the communication exchange.

摘要翻译： 方面描述了可以基于网络拥塞级别在对等网络中使用的不同的多天线技术。 当网络拥塞级别低时，可以利用MIMO方案，其中发射机在同一业务段中基本上同时间向接收机发送多个空间流。 一种接收机波束形成方案，其中发射机在业务段和接收机中发送单个流使用多个接收天线来最大化信噪比，可以在网络拥塞度高时使用。 连接对（发射机和接收机）在MIMO方案中占据比接收机波束形成方案更多的控制资源。 在通信开始的同时，可以进行与使用哪种技术有关的决定。 此外，如果在通信期间网络条件改变，则在通信交换期间，所利用的天线技术可以被切换到不同的技术。

公开(公告)号：US08249046B2

公开(公告)日：2012-08-21

申请号：US12477356

申请日：2009-06-03

申请人： Xinzhou Wu ,  Thomas Richardson ,  Junyi Li ,  Saurabh Tavildar ,  Pramod Viswanath

发明人： Xinzhou Wu ,  Thomas Richardson ,  Junyi Li ,  Saurabh Tavildar ,  Pramod Viswanath

IPC分类号： H04W4/00 ,  H04J1/00

CPC分类号： H04B7/0413 ,  H04B7/0617 ,  H04B7/086

摘要： Aspects relate to interference management in a multiple-input-multiple-output peer-to-peer network utilizing connection scheduling. When channel side information is available at both transmitter and receiver, both devices determine transmit/receiver beamforming vectors. Transmitter sends a first transmission request signal with first transmit beamforming vector and a second transmission request signal with second transmit beamforming vector in a transmission request block. Receiver estimates SINRs of the MIMO channels associated with the receive beamforming vectors and determines whether to return request response signals. Based on received request response signals, transmitter decides to transmit streams of data using the corresponding transmit beamforming vectors in the data burst. When channel side information is available only at receiver, transmitter sends one transmission request signal. Receiver estimates the SINRs of the MIMO channels associated with receive beamforming vectors using MMSE and/or successive interference cancellation (SIC), and returns request response signals in the request response block.

摘要翻译： 方面涉及利用连接调度的多输入多输出对等网络中的干扰管理。 当信道侧信息在发射机和接收机都可用时，两个设备确定发射/接收机波束成形向量。 发射机在发射请求块中发送具有第一发射波束形成向量的第一传输请求信号和具有第二发射波束形成向量的第二传输请求信号。 接收机估计与接收波束形成向量相关联的MIMO信道的SINR，并确定是否返回请求响应信号。 基于接收到的请求响应信号，发射机决定使用数据突发中的对应的发射波束形成向量来发送数据流。 当信道侧信息仅在接收机处可用时，发射机发送一个传输请求信号。 接收机使用MMSE和/或连续干扰消除（SIC）估计与接收波束成形向量相关联的MIMO信道的SINR，并且在请求响应块中返回请求响应信号。

公开(公告)号：US20100309854A1

公开(公告)日：2010-12-09

申请号：US12477356

申请日：2009-06-03

申请人： Xinzhou Wu ,  Thomas Richardson ,  Junyi Li ,  Saurabh Tavildar ,  Pramod Viswanath

发明人： Xinzhou Wu ,  Thomas Richardson ,  Junyi Li ,  Saurabh Tavildar ,  Pramod Viswanath

IPC分类号： H04W4/00 ,  H04B1/00 ,  H04L1/02

CPC分类号： H04B7/0413 ,  H04B7/0617 ,  H04B7/086

摘要： Aspects relate to interference management in a multiple-input-multiple-output peer-to-peer network utilizing connection scheduling. When channel side information is available at both transmitter and receiver, both devices determine transmit/receiver beamforming vectors. Transmitter sends a first transmission request signal with first transmit beamforming vector and a second transmission request signal with second transmit beamforming vector in a transmission request block. Receiver estimates SINRs of the MIMO channels associated with the receive beamforming vectors and determines whether to return request response signals. Based on received request response signals, transmitter decides to transmit streams of data using the corresponding transmit beamforming vectors in the data burst. When channel side information is available only at receiver, transmitter sends one transmission request signal. Receiver estimates the SINRs of the MIMO channels associated with receive beamforming vectors using MMSE and/or successive interference cancellation (SIC), and returns request response signals in the request response block.

摘要翻译： 方面涉及利用连接调度的多输入多输出对等网络中的干扰管理。 当信道侧信息在发射机和接收机都可用时，两个设备确定发射/接收机波束成形向量。 发射机在发射请求块中发送具有第一发射波束形成向量的第一传输请求信号和具有第二发射波束形成向量的第二传输请求信号。 接收机估计与接收波束形成向量相关联的MIMO信道的SINR，并确定是否返回请求响应信号。 基于接收到的请求响应信号，发射机决定使用数据突发中的对应的发射波束形成向量来发送数据流。 当信道侧信息仅在接收机处可用时，发射机发送一个传输请求信号。 接收机使用MMSE和/或连续干扰消除（SIC）估计与接收波束成形向量相关联的MIMO信道的SINR，并且在请求响应块中返回请求响应信号。

公开(公告)号：US08812676B2

公开(公告)日：2014-08-19

申请号：US12875311

申请日：2010-09-03

申请人： Shailesh Patil ,  Thomas Richardson ,  Xinzhou Wu ,  Junyi Li ,  Saurabh Tavildar ,  Pablo A. Anigstein

发明人： Shailesh Patil ,  Thomas Richardson ,  Xinzhou Wu ,  Junyi Li ,  Saurabh Tavildar ,  Pablo A. Anigstein

IPC分类号： G06F15/173 ,  H04W72/02 ,  H04W72/04 ,  H04W84/18

CPC分类号： H04W72/02 ,  H04W72/0493 ,  H04W72/06 ,  H04W72/085 ,  H04W84/18 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/20

摘要： A method, an apparatus, and a computer program product are provided in which signals are received on each of a plurality of resources and an energy of each of the signals of a set of the plurality of resources is determined. In addition, a resource is determined based on a probability for each of the resources in a subset of the set. The probability for selecting a resource with a lower determined energy is less than one and greater than the probability for selecting a resource with a higher determined energy. Furthermore, a signal is transmitted on the selected resource.

摘要翻译： 提供了一种方法，装置和计算机程序产品，其中在多个资源中的每一个上接收信号，并且确定多个资源集合中的每个信号的能量。 此外，基于集合的子集中的每个资源的概率来确定资源。 选择具有较低确定能量的资源的概率小于1且大于选择具有较高确定能量的资源的概率。 此外，在所选择的资源上发送信号。

公开(公告)号：US08005091B2

公开(公告)日：2011-08-23

申请号：US12165815

申请日：2008-07-01

申请人： Xinzhou Wu ,  Junyi Li ,  Saurabh Tavildar ,  Thomas Richardson

发明人： Xinzhou Wu ,  Junyi Li ,  Saurabh Tavildar ,  Thomas Richardson

IPC分类号： H04L12/28

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/0091 ,  H04W76/11 ,  H04W76/14

摘要： An apparatus and method are disclosed for generating a transmission connection identifier (CID) for a transmitter/receiver pair in a wireless network. The CID may be selected from or mapped to a hybrid CID space comprising a first set of orthogonal CIDs and a second set of non-orthogonal (random or pseudo-random) CIDs. When a transmitter device wants to initiate a peer-to-peer connection with a receiver device, the transmitter and receiver devices attempt to obtain a CID to identify their connection within a traffic channel in a shared frequency space. The first and/or second device attempt to select a CID from the first set of orthogonal CIDs. However, if a CID collision is detected, the first and second devices select their CID from the second set of non-orthogonal CIDs. The selected transmission CID may be used during a time slot or interval to facilitate communications between the first and second devices.

摘要翻译： 公开了用于在无线网络中生成用于发射机/接收机对的传输连接标识符（CID）的装置和方法。 可以从包含第一组正交CID和第二组非正交（随机或伪随机）CID的混合CID空间中选择或映射CID。 当发射机设备想要发起与接收机设备的对等连接时，发射机和接收机设备尝试获得CID以在共享频率空间内的业务信道内识别它们的连接。 第一和/或第二设备尝试从第一组正交CID中选择CID。 然而，如果检测到CID冲突，则第一和第二设备从第二组非正交CID中选择它们的CID。 可以在时隙或间隔期间使用所选择的传输CID以促进第一和第二设备之间的通信。

公开(公告)号：US20090019168A1

公开(公告)日：2009-01-15

申请号：US12165815

申请日：2008-07-01

申请人： Xinzhou Wu ,  Junyi Li ,  Saurabh Tavildar ,  Thomas Richardson

发明人： Xinzhou Wu ,  Junyi Li ,  Saurabh Tavildar ,  Thomas Richardson

IPC分类号： G06F15/16

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/0091 ,  H04W76/11 ,  H04W76/14

摘要： An apparatus and method are disclosed for generating a transmission connection identifier (CID) for a transmitter/receiver pair in a wireless network. The CID may be selected from or mapped to a hybrid CID space comprising a first set of orthogonal CIDs and a second set of non-orthogonal (random or pseudo-random) CIDs. When a transmitter device wants to initiate a peer-to-peer connection with a receiver device, the transmitter and receiver devices attempt to obtain a CID to identify their connection within a traffic channel in a shared frequency space. The first and/or second device attempt to select a CID from the first set of orthogonal CIDs. However, if a CID collision is detected, the first and second devices select their CID from the second set of non-orthogonal CIDs. The selected transmission CID may be used during a time slot or interval to facilitate communications between the first and second devices.

摘要翻译： 公开了用于在无线网络中生成用于发射机/接收机对的传输连接标识符（CID）的装置和方法。 可以从包含第一组正交CID和第二组非正交（随机或伪随机）CID的混合CID空间中选择或映射CID。 当发射机设备想要发起与接收机设备的对等连接时，发射机和接收机设备尝试获得CID以在共享频率空间内的业务信道内识别它们的连接。 第一和/或第二设备尝试从第一组正交CID中选择CID。 然而，如果检测到CID冲突，则第一和第二设备从第二组非正交CID中选择它们的CID。 可以在时隙或间隔期间使用所选择的传输CID以促进第一和第二设备之间的通信。

公开(公告)号：US09787777B2

公开(公告)日：2017-10-10

申请号：US12047713

申请日：2008-03-13

申请人： Junyi Li ,  Rajiv Laroia ,  Vincent D. Park ,  Thomas Richardson ,  Saurabh Tavildar ,  Xinzhou Wu

发明人： Junyi Li ,  Rajiv Laroia ,  Vincent D. Park ,  Thomas Richardson ,  Saurabh Tavildar ,  Xinzhou Wu

IPC分类号： H04L12/28 ,  H04L29/08 ,  H04W4/02 ,  H04W68/00 ,  H04W40/24

CPC分类号： H04L67/16 ,  H04L67/18 ,  H04W4/02 ,  H04W4/021 ,  H04W40/246 ,  H04W68/00 ,  Y02D30/40 ,  Y02D70/00 ,  Y02D70/20

摘要： Methods and apparatus for wireless communications in regional networks, e.g., ad hoc peer to peer networks, are described. Wireless communications devices transmit and monitor for presence indicator signals broadcast from other peer communications devices in its local vicinity. A wireless communications device maintains a list of discovered devices in its vicinity. A first wireless communications device transmits a paging signal directly over an airlink to a second communications device, which is on its list and to which it desires to send data units, e.g., user data in a peer to peer traffic segment. In response to a received paging response signal from the second device, the first device transmits data units, intended for the second device, to a third device, which acts as an intermediary node. The power level for the data unit signal is controlled to be lower than the power level used for the paging signal. FIG. 4

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：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。