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：US20110085620A1

公开(公告)日：2011-04-14

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： H04L27/00 ,  H04L27/06

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 said 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 said communications resources. Coherent demodulation is performed on data signals received on a second subset of said set of communications resources using said first and second channel estimates and said coding information to recover information communicated by said first communications device and to recover separate information communicated by said 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。 通过对在所述一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。 从在所述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。 对使用所述第一和第二信道估计和所述编码信息的所述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，以恢复由所述第一通信设备传送的信息并恢复由所述第二通信设备传送的单独信息。

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：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：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：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。

公开(公告)号：US08072917B2

公开(公告)日：2011-12-06

申请号：US12268175

申请日：2008-11-10

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

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

IPC分类号： H04B7/185 ,  H04B7/204 ,  H04W4/00

CPC分类号： H04W52/265 ,  H04W52/343

摘要： Methods and apparatus relating to scheduling of air link resources, e.g., traffic segments, in wireless communications are described. Various described methods and apparatus are well suited to wireless peer to peer networks in which traffic scheduling is decentralized, e.g. an ad hoc peer to peer network. A first wireless terminal receives a transmission request and quality of service information from a second wireless terminal corresponding to a connection. The first wireless terminal decides not to receiver yield, determines a request response transmission power level as a function of the received quality of service information, and transmits, at the determined power level, a generated request response signal. By controllably adjusting the transmission power level of a request response, transmitter yielding decisions of lower priority links are impacted, since lower priority links measure and use received power level information corresponding to request responses of higher priority links in their transmitter yielding decisions.

摘要翻译： 描述了与无线通信中的空中链路资源（例如业务段）的调度有关的方法和装置。 各种描述的方法和装置非常适合于其中业务调度被分散的无线对等网络，例如， 一个特别的对等网络。 第一无线终端从对应于连接的第二无线终端接收传输请求和服务质量信息。 第一无线终端决定不接收收益，确定作为接收到的服务质量信息的函数的请求响应发送功率电平，并且以所确定的功率电平发送生成的请求响应信号。 通过可控地调整请求响应的发送功率电平，由于较低优先级的链路测量和使用对应于其发射机产生决定中的较高优先级链路的请求响应的接收功率电平信息，所以影响较低优先级链路的发射机出错决策。