公开(公告)号：US08861418B2

公开(公告)日：2014-10-14

申请号：US12166603

申请日：2008-07-02

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

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

IPC分类号： H04H20/71 ,  H04B7/216 ,  H04L12/28 ,  H04L12/56 ,  H04J3/26 ,  H04J3/17 ,  H04W8/18 ,  H04W4/08

CPC分类号： H04W4/08 ,  H04W8/186

摘要： Methods and apparatus related to group communications in a wireless communications system, e.g., a peer to peer wireless communications system, are described. Methods and apparatus directed to closed groups, e.g., where the number of group members are fixed at a given time and known to one or more members of the group, are described. Various embodiments are well suited to decentralized peer to peer wireless networks including a plurality of individual traffic resources, e.g., traffic slots and/or traffic segments, which may be independently scheduled in a decentralized manner. Some features and/or aspects are directed to the use of individual group member acknowledgement signaling in response to a transmitted group traffic data signal. By monitoring for anticipated individual group member acknowledgment signals and identifying members which have not signaled a positive acknowledgment, re-transmission can be directed and/or tailored to a subset of the group.

摘要翻译： 描述了与无线通信系统中的组通信相关的方法和装置，例如对等无线通信系统。 描述了针对封闭组的方法和装置，例如，其中组成员的数量在给定时间被固定并且对该组的一个或多个成员已知的那些。 各种实施例非常适合于分散的对等无线网络，其包括多个单独的业务资源，例如业务时隙和/或业务段，其可以以分散的方式独立地调度。 一些特征和/或方面针对响应于所发送的组业务数据信号的单独组成员确认信令的使用。 通过监视预期的个人组成员确认信号和识别尚未发出肯定确认的成员，可以针对该组的子集来定向和/或定制重新发送。

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：US08571566B2

公开(公告)日：2013-10-29

申请号：US12756660

申请日：2010-04-08

申请人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Hongseok Kim

发明人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Hongseok Kim

IPC分类号： H04W72/00

CPC分类号： H04W28/18 ,  H04W16/14 ,  H04W72/0406

摘要： Methods and apparatus for determining band availability and/or allocating one or more frequency bands to a communications device for wireless communications are described. In different locations and/or at different times different frequency bands, e.g., band corresponding to unused TV channels, may be available for allocation. Various described methods and apparatus are well suited for supporting local peer to peer networks in an environment in which a plurality of different technologies are supported. A centralized control device determines and allocates a frequency band to a wireless terminal for use at a given location and at a given time, e.g., for peer to peer communications using a particular technology supported by the wireless terminal. The centralized control device uses database information and information received from a plurality of wireless terminals in making frequency band allocation decisions, performing load balancing, and/or performing interference management.

摘要翻译： 描述了用于确定频带可用性和/或将一个或多个频带分配给用于无线通信的通信设备的方法和装置。 在不同的位置和/或在不同的时间，不同的频带，例如对应于未使用的电视频道的频带，可用于分配。 各种描述的方法和装置非常适合于在支持多种不同技术的环境中支持本地对等网络。 集中控制装置确定并分配给无线终端的频带，以便在给定位置和给定时间使用，例如用于由无线终端支持的特定技术的对等通信。 集中控制装置使用数据库信息和从多个无线终端接收的信息进行频带分配决定，执行负载平衡，和/或执行干扰管理。

公开(公告)号：US08542706B2

公开(公告)日：2013-09-24

申请号：US12329780

申请日：2008-12-08

申请人： Hua Wang ,  Saurabh Tavildar ,  Vincent D. Park ,  Junyi Li

发明人： Hua Wang ,  Saurabh Tavildar ,  Vincent D. Park ,  Junyi Li

IPC分类号： H04J3/24

CPC分类号： H04W28/06 ,  H04W28/065

摘要： Methods and apparatus related to packet fragmentation and reconstruction are described. A sequence of bits is generated including at least one header and at least partial packet payload prior to a determination of the actual data rate to be used in a communications segment. In some embodiments, the generated sequence of bits corresponds to a prepared information bit stream for a best case scenario in which the highest data rate is selected for segment. Various embodiments allow for the selection of the data rate to be used for the communications segment to be delayed until just prior to the transmission. Thus the selection of the data rate for the communications segment, and thus the segment capacity, can be based on more current channel condition information than would otherwise be possible if the communications device needed to know the data rate for the segment before performing header and packet fragmentation operations.

摘要翻译： 描述了与分组分段和重构有关的方法和设备。 在确定要在通信段中使用的实际数据速率之前，生成包括至少一个报头和至少部分分组有效载荷的比特序列。 在一些实施例中，所生成的比特序列对应于为其选择最高数据速率的最佳情况的准备的信息比特流。 各种实施例允许选择将要延迟的通信段的数据速率直到传输之前。 因此，对于通信段的数据速率的选择以及因此的段容量可以基于比当前通信设备在执行报头和分组之前需要知道该段的数据速率所需的更多的当前信道条件信息的情况下 碎片操作。

公开(公告)号：US08509802B2

公开(公告)日：2013-08-13

申请号：US12787449

申请日：2010-05-26

申请人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Hongseok Kim

发明人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Hongseok Kim

IPC分类号： H04W72/00

CPC分类号： H04W72/085 ,  H04W16/14 ,  H04W28/20 ,  H04W48/18 ,  H04W72/0486 ,  H04W84/18 ,  H04W88/06

摘要： Methods and apparatus supporting load balancing in a wireless communications system implementing decentralized control are described. Different channels, e.g., unused TV channels, are available in different locations for use for communications. Various communications technologies, e.g., WiFi, 3G Blue-Tooth, etc., may be supported by a communications device and may be allowed to be used on the available channels. A wireless communications device evaluates its current local environment, e.g., estimating potential rates that it may use and/or estimating latency, for each of a plurality of available alternative channel/technology combinations. The wireless communications device selects a channel and technology combination to use as a function of its estimates. The wireless communications device uses its selected channel and technology combination for communications, e.g., for peer to peer communications including direct peer to peer traffic signaling as part of a local peer to peer network.

摘要翻译： 描述了在实现分散控制的无线通信系统中支持负载平衡的方法和装置。 不同的频道，例如未使用的电视频道，可用于不同的位置，以用于通信。 诸如WiFi，3G蓝牙等各种通信技术可以由通信设备支持，并且可以允许在可用信道上使用。 无线通信设备评估其当前的本地环境，例如，估计可能使用的潜在速率和/或估计多个可用备选信道/技术组合中的每一个的等待时间。 无线通信设备选择信道和技术组合作为其估计的函数使用。 无线通信设备使用其所选择的信道和技术组合进行通信，例如用于对等通信，包括作为本地对等网络的一部分的直接对等业务信令。

公开(公告)号：US08494540B2

公开(公告)日：2013-07-23

申请号：US12756675

申请日：2010-04-08

申请人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Hongseok Kim

发明人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Hongseok Kim

IPC分类号： H04W24/00

CPC分类号： H04W72/04 ,  H04W8/005 ,  H04W16/10 ,  H04W16/14 ,  H04W72/02 ,  H04W72/0486 ,  H04W84/18

摘要： Various embodiments relate to using available spectrum for peer to peer communications and for selecting which of several possibly available channels should be used. Various methods and apparatus are well suited to peer to peer networks in which channel usage decisions are made in a decentralized manner. A wireless terminal generates a list of potential available channels to be used for peer to peer communications, e.g., based on FCC information and/or local sensing. Channels are filled in accordance with a predetermined channel ordering. A wireless terminal migrates between the channels in accordance with changes in the number of peer devices using a channel. The network, in a distributed manner, changes the number of channels in use at a location in response to changes in numbers of active peer devices at a location.

公开(公告)号：US08493922B2

公开(公告)日：2013-07-23

申请号：US12832787

申请日：2010-07-08

申请人： Junyi Li ,  Saurabh Tavildar ,  Nilesh Khude ,  Thomas Richardson ,  Rajiv Laroia

发明人： Junyi Li ,  Saurabh Tavildar ,  Nilesh Khude ,  Thomas Richardson ,  Rajiv Laroia

IPC分类号： H04W4/00

CPC分类号： H04W74/04 ,  H04W72/0453 ,  H04W72/10 ,  H04W84/18

摘要： A method of operating a wireless device includes determining a preferred subset of bands of a set of bands for communicating with a first node, communicating a scheduling request with the first node, and determining whether to schedule a data transmission on each band of the set of bands based on the preferred subset of bands and the scheduling request.

摘要翻译： 一种操作无线设备的方法包括确定用于与第一节点进行通信的一组频带中的频带的优选子集，与第一节点通信调度请求，以及确定是否在该组的每个频带上调度数据传输 基于频带的优选子集和调度请求的频带。

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。