公开(公告)号：US08144636B2

公开(公告)日：2012-03-27

申请号：US12168679

申请日：2008-07-07

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： H04B7/00

CPC分类号： H04L1/0002 ,  H04L1/0025 ,  Y02D70/10 ,  Y02D70/20

摘要： An improved mechanism is provided that facilitates transmission of small packets within an ad hoc peer-to-peer network. A small packet is identified to a receiver within a control channel so that its lower power can be considered in an interference management protocol implemented among local peer devices. In a traffic slot, a transmitter voluntarily backs down on the transmitter power as a smaller packet will require much lower signal-to-noise ratio. This will improve the signal energy per bit per noise power density for the transmission as well as minimize the interference caused to other wireless communications happening in the same spectrum.

公开(公告)号：US08140003B2

公开(公告)日：2012-03-20

申请号：US12178231

申请日：2008-07-23

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

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

IPC分类号： H04B7/15

CPC分类号： H04W40/12 ,  Y02D70/22 ,  Y02D70/34

摘要： Methods and apparatus for wireless communications in networks, e.g., regional ad hoc peer to peer networks, are described. A communications node, e.g., a third node monitors for wireless communications between other peer communication nodes, e.g., a first node and a second node, in its local vicinity. The third node determines from the monitored wireless communication an indication of link quality corresponding to a communication link between the communication nodes which are communicating or seeking to establish a communications link. The third node generates an estimate of a link quality for a communications link between itself and the first node. Based on the indication of link quality and generated estimate of link quality, the third node decides whether or not to send a signal indicating availability to relay communication between the first and second nodes. The third node, when acting as an intermediary node after indicating its availability to so act, may receive traffic data e.g., user data communicated in a peer to peer traffic segment, from the first node. The third node communicates the received traffic data to the second node by transmitting the traffic data.

摘要翻译： 描述了用于网络中的无线通信的方法和装置，例如区域自组织对等网络。 通信节点，例如第三节点监视在其本地附近的其他对等通信节点（例如，第一节点和第二节点）之间的无线通信。 第三节点从监视的无线通信确定与正在通信或寻求建立通信链路的通信节点之间的通信链路相对应的链路质量的指示。 第三节点产生对于其与第一节点之间的通信链路的链路质量的估计。 基于链路质量的指示和链路质量的产生估计，第三节点决定是否发送指示第一和第二节点之间的中继通信的可用性的信号。 第三节点在指示其可用性之后充当中间节点时可以从第一节点接收业务数据，例如在对等业务段中传送的用户数据。 第三节点通过发送业务数据将接收到的业务数据传送到第二节点。

公开(公告)号：US07961708B2

公开(公告)日：2011-06-14

申请号：US11775787

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： H04L5/0053 ,  H04L5/0007

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：US20090232086A1

公开(公告)日：2009-09-17

申请号：US12047741

申请日：2008-03-13

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： H04Q7/00

CPC分类号： H04W76/021 ,  H04W8/005 ,  H04W76/11 ,  H04W76/14 ,  H04W76/15 ,  H04W84/18

摘要： Methods and apparatus related to a peer to peer wireless communications system supporting the association of multiple connection identifiers with a single connection between a pair of wireless terminals are described. A differentiated quality of service is supported by assigning different numbers of connection identifiers to different connections. The number of connection identifiers assigned to a wireless terminal pair for a connection is a function of one of: data rate, priority information, and quality of service information. Being allocated a higher number of connection identifiers results in being allocated a higher number of traffic transmission request resources, thus increasing the likelihood that the connection is permitted to use a traffic transmission segment. The allocation of connection identifiers is performed in a distributed manner in which handshake signaling occurs between a wireless terminal pair seeking to establish a connection, e.g., as part of a multi-step paging scheme.

摘要翻译： 描述了支持多个连接标识符与一对无线终端之间的单个连接的关联的对等无线通信系统相关的方法和装置。 通过为不同的连接分配不同数量的连接标识符来支持差异化的服务质量。 分配给用于连接的无线终端对的连接标识符的数量是数据速率，优先级信息和服务质量信息之一的函数。 分配更多数量的连接标识符导致分配更多数量的业务传输请求资源，从而增加连接被允许使用业务传输段的可能性。 连接标识符的分配以分布式方式执行，其中握手信号发生在寻求建立连接的无线终端对之间，例如作为多步寻呼方案的一部分。

公开(公告)号：US20090109851A1

公开(公告)日：2009-04-30

申请号：US11933042

申请日：2007-10-31

申请人： Junyi Li ,  Rajiv Laroia ,  Sundeep Rangan ,  Thomas Richardson ,  Xinzhou Wu ,  Saurabh Tavildar

发明人： Junyi Li ,  Rajiv Laroia ,  Sundeep Rangan ,  Thomas Richardson ,  Xinzhou Wu ,  Saurabh Tavildar

IPC分类号： H04L12/28

CPC分类号： H04W72/1231 ,  H04W72/1278 ,  H04W84/18 ,  H04W92/18

摘要： Methods and apparatus for use in a wireless communications system in which traffic air link resources may be, and sometimes are, shared are described. Various described methods and apparatus are well suited for use in a peer to peer communications system in which transmission control decisions are made in a decentralized manner. An exemplary peer to peer communications system implements the scheduling of traffic intervals in a distributed manner utilizing connection priority information and interference information. An exemplary peer to peer timing structure includes a user scheduling interval and an associated traffic interval. The user scheduling interval includes a plurality transmission request/request response rounds. By utilizing multiple request/request response rounds, a transmission decision corresponding to a connection to yield in an earlier round can be overridden in a subsequent round, resulting in higher overall traffic throughput in the system.

摘要翻译： 描述用于其中交通空中链路资源可以共享的无线通信系统中的方法和装置。 各种描述的方法和装置非常适合用于以分散方式进行传输控制决定的对等通信系统。 示例性的对等通信系统利用连接优先级信息和干扰信息以分布式方式实现业务间隔的调度。 一种示例性的对等定时结构包括用户调度间隔和相关联的业务间隔。 用户调度间隔包括多个发送请求/请求响应轮。 通过利用多个请求/请求响应轮，可以在随后的一轮中覆盖对应于在较早轮中产生的连接的传输决定，导致系统中更高的总体流量吞吐量。

公开(公告)号：US20090017861A1

公开(公告)日：2009-01-15

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：US20090016317A1

公开(公告)日：2009-01-15

申请号：US12166619

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： H04B7/212

CPC分类号： H04W72/10 ,  H04W4/08 ,  H04W84/18

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. Various features and/or aspects are directed to associating group transmission request resources and/or request response resources with device identifiers as opposed to associating such resources with connection identifiers. This approach is well suited for large size groups of N members, where the number of the number of connections between members of the group is approximately N2. This approach provides for efficient resource utilization supporting group traffic signaling.

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。 各种特征和/或方面涉及将组传输请求资源和/或请求响应资源与设备标识符相关联，而不是将这样的资源与连接标识符相关联。 这种方法非常适合于N个成员的大型组，其中组成员之间的连接数量大约为N2。 这种方法提供了有效的资源利用，支持组通信量信令。

公开(公告)号：US20090016295A1

公开(公告)日：2009-01-15

申请号：US12169080

申请日：2008-07-08

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： H04Q7/00 ,  H04Q7/20

CPC分类号： H04L5/0007 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0062 ,  H04L5/0091 ,  H04W72/082 ,  H04W76/11 ,  H04W76/14 ,  H04W84/18 ,  H04W92/18

摘要： A protocol is provided that facilitates downlink concurrent peer-to-peer communications (within a time slot or traffic slot) between one device and many terminals as well as uplink concurrent peer-to-peer communications (within a time slot or traffic slot) between a plurality of terminals and one device. The concurrent peer-to-peer communications may take place within an ad hoc network of devices. To facilitate such operation, a time-frequency structure is provided within a control channel that allows the device and terminals to identify the peer-to-peer connections. This time-frequency structure also allows terminals to identify other sibling terminals that have a connection with the same device, thereby allowing to more efficiently performing interference mitigation. That is, sibling peer-to-peer connections with the same device may be treated different from other non-related peer-to-peer connects for purposes of interference mitigation in a wireless network.

摘要翻译： 提供了一种协议，其有助于一个设备与许多终端之间的下行链路并发对等通信（在时隙或业务时隙内）以及上行链路并发对等通信（在时隙或业务时隙内） 多个终端和一个设备。 并发的对等通信可以在设备的自组织网络中进行。 为了促进这种操作，在控制信道内提供时间 - 频率结构，允许设备和终端识别对等连接。 该时频结构还允许终端识别与同一设备具有连接的其他兄弟终端，从而允许更有效地执行干扰减轻。 也就是说，与无线网络中的干扰减轻的目的可以将与同一设备的同级对等连接对待与其他非相关对等连接不同。

公开(公告)号：US20090016287A1

公开(公告)日：2009-01-15

申请号：US12168679

申请日：2008-07-07

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： H04Q7/20

CPC分类号： H04L1/0002 ,  H04L1/0025 ,  Y02D70/10 ,  Y02D70/20

摘要： An improved mechanism is provided that facilitates transmission of small packets within an ad hoc peer-to-peer network. A small packet is identified to a receiver within a control channel so that its lower power can be considered in an interference management protocol implemented among local peer devices. In a traffic slot, a transmitter voluntarily backs down on the transmitter power as a smaller packet will require much lower signal-to-noise ratio. This will improve the signal energy per bit per noise power density for the transmission as well as minimize the interference caused to other wireless communications happening in the same spectrum.

摘要翻译： 提供了一种改进的机制，其有助于传送自组织对等网络内的小分组。 对于控制信道内的接收机识别出小分组，使得在本地对等设备之间实现的干扰管理协议中可以考虑其较低的功率。 在业务时隙中，发射机主动地对发射机功率进行备份，因为较小的分组将需要较低的信噪比。 这将改善传输中每比特每信噪比功率密度的信号能量，并最大限度地减少对同一频谱中发生的其他无线通信的干扰。

公开(公告)号：US20090016272A1

公开(公告)日：2009-01-15

申请号：US12168673

申请日：2008-07-07

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： H04Q7/20

CPC分类号： H04L1/0002 ,  H04L1/0025 ,  Y02D70/10 ,  Y02D70/20

摘要： An improved mechanism is provided that facilitates transmission of small packets within an ad hoc peer-to-peer network. A small packet is identified to a receiver within a control channel so that its lower power can be considered in an interference management protocol implemented among local peer devices. In a traffic slot, a transmitter voluntarily backs down on the transmitter power as a smaller packet will require much lower signal-to-noise ratio. This will improve the signal energy per bit per noise power density for the transmission as well as minimize the interference caused to other wireless communications happening in the same spectrum.