公开(公告)号：US08238836B2

公开(公告)日：2012-08-07

申请号：US12168690

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： H04B17/00

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：US20120088450A9

公开(公告)日：2012-04-12

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：US07961698B2

公开(公告)日：2011-06-14

申请号：US12166645

申请日：2008-07-02

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

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

IPC分类号： H04B7/208 ,  H04L12/28 ,  H04J3/26

CPC分类号： H04W28/0236 ,  H04L12/1881 ,  H04L12/189 ,  H04W72/005 ,  H04W72/082 ,  H04W72/10 ,  H04W72/1231 ,  H04W72/1247 ,  H04W84/18

摘要： Methods and apparatus related to broadcasting data and interference management in a peer to peer wireless communications network are described. Scheduling of traffic air link resources is performed on a slot by slot basis in a decentralized manner. Wireless devices intending to broadcast traffic signals transmit broadcast request signals, sometimes alternatively referred to as broadcast indicator signals. A priority level is associated with each of the broadcast request signals. A receiver device intending to receive broadcast signals detects the broadcast request signals and makes an interference determination as to whether the higher priority broadcast traffic signal can be successfully recovered in the presence of lower priority broadcast traffic signals. If the determination is that the expected interference from the lower priority broadcast traffic is unacceptable, the receiver device generates and transmits an interference control signal communicating to the lower priority device a command or request not to broadcast.

摘要翻译： 描述了在对等无线通信网络中与广播数据和干扰管理有关的方法和装置。 以分散的方式逐个时隙地执行业务空中链路资源的调度。 有意地广播业务信号的无线设备发送广播请求信号，有时可选地称为广播指示符信号。 优先级与每个广播请求信号相关联。 要接收广播信号的接收机设备检测广播请求信号，并且在存在较低优先级的广播业务信号的情况下，是否可以成功地恢复较高优先级的广播业务信号，并做出干扰确定。 如果确定来自较低优先级的广播业务的预期干扰是不可接受的，则接收机设备生成并发送与低优先级设备通信的干扰控制信号，该命令或请求不被广播。

公开(公告)号：US20100191759A1

公开(公告)日：2010-07-29

申请号：US12361896

申请日：2009-01-29

申请人： Junyi Li ,  Xinzhou Wu ,  Saurabh Tavildar ,  Vincent D. Park

发明人： Junyi Li ,  Xinzhou Wu ,  Saurabh Tavildar ,  Vincent D. Park

IPC分类号： G06F17/30

CPC分类号： H04L67/104 ,  H04L5/02 ,  H04L5/023 ,  H04L5/1438 ,  H04W28/0273 ,  H04W36/0055 ,  H04W48/14 ,  H04W52/26

摘要： Methods and apparatus for communicating information, e.g., queries and query responses, in a peer to peer communications network are described. Queries include, e.g., queries for a product, service, activity or activity partner. In some embodiments, a query channel is implemented and utilized. The implemented query channel structure is such that multiple query responses may be communicated corresponding to a single transmitted query. Various embodiments employ randomization in transmission segment selection by an individual communications device within a transmission block to decrease the likelihood of collisions. A communication device's access to the query channel is determined by the communications device itself. A communications device's decision as to whether or not to transmit and/or re-transmit a query is based on one or more of: its query transmission statistics, historical query channel loading information, and priority level information corresponding to the communications device.

摘要翻译： 描述了在对等通信网络中传送信息（例如查询和查询响应）的方法和装置。 查询包括例如对产品，服务，活动或活动合作伙伴的查询。 在一些实施例中，实现和利用查询信道。 实现的查询信道结构使得可以对应于单个发送的查询来传送多个查询响应。 各种实施例在传输块内的单个通信设备的传输段选择中采用随机化，以减少冲突的可能性。 通信设备对该查询信道的访问由通信设备本身确定。 通信设备关于是否发送和/或重新发送查询的决定基于以下中的一个或多个：其查询传输统计信息，历史查询信道加载信息和对应于该通信设备的优先级信息。

公开(公告)号：US20100118843A1

公开(公告)日：2010-05-13

申请号：US12268158

申请日：2008-11-10

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： H04W74/00

CPC分类号： H04L25/03343 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0224 ,  H04L2025/03414

摘要： Methods and apparatus for performing peer to peer communications with access routers and non-access router peer devices are described. An access terminal generates a channel estimate estimating the channel between the access terminal and an access router. For at least some communication with the access router, a channel compensation operation is performed on a symbol to be transmitted prior to its transmission to the access router. In contrast, symbols transmitted to other access terminals are not subject to a channel compensation operation prior to transmission with the receiving access terminal being responsible for implementing a channel compensation operation on the received signal.

摘要翻译： 描述了用于与接入路由器和非接入路由器对等设备进行对等通信的方法和装置。 接入终端生成估计接入终端与接入路由器之间的信道的信道估计。 对于与接入路由器的至少一些通信，在要传输到接入路由器之前要对要发送的符号执行信道补偿操作。 相反，发送到其他接入终端的符号在接收接入终端负责对接收到的信号执行信道补偿操作之前不进行信道补偿操作。

公开(公告)号：US20100118701A1

公开(公告)日：2010-05-13

申请号：US12267905

申请日：2008-11-10

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： H04L12/26

CPC分类号： H04W72/1231 ,  H04L43/08 ,  H04W72/1278

摘要： Methods and apparatus for making communications decisions are described. In some embodiments, a method includes recovering a quality of service level from a transmission request response signal and making a decision whether or not to transmit traffic data based on the recovered quality of service level. In other embodiments a method includes recovering a first quality of service level from a first transmission request response signal which is in response to a first traffic transmission request signal, and making a decision, based on the recovered first quality of service level, whether or not to transmit a second transmission request response signal in response to a second traffic transmission request signal. In some embodiments, the phase of the transmission request response signal is used to communicate the quality of service level. The device transmitting the transmission request response may also transmit pilots which can be used as phase reference signals.

摘要翻译： 描述通信决策的方法和装置。 在一些实施例中，一种方法包括从传输请求响应信号中恢复服务质量水平，并基于恢复的服务质量水平决定是否传送业务数据。 在其他实施例中，一种方法包括从响应于第一业务传输请求信号的第一传输请求响应信号恢复第一服务质量水平，并且基于恢复的第一服务质量水平做出决定 响应于第二业务传输请求信号发送第二传输请求响应信号。 在一些实施例中，传输请求响应信号的相位用于传达服务质量水平。 发送发送请求响应的装置也可以发送可用作相位参考信号的导频。

公开(公告)号：US20100085973A1

公开(公告)日：2010-04-08

申请号：US12246905

申请日：2008-10-07

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： H04L12/56

CPC分类号： H04W72/02 ,  H04W72/082 ,  H04W84/18

摘要： Wireless terminals in a peer to peer system, which desire to communicate traffic signals, acquire a connection identifier associated with traffic transmission request air link resources. The air link resources in the system, in some embodiments, are structured so that each connection identifier has a one to one mapping to a request transmission unit, the request transmission units are arranged into a plurality of groups, and each group occurs in a different symbol time interval for the same traffic slot. A wireless terminal identifies locally available connection identifiers from a set of connection identifiers based on power received on individual connection identification transmission units in a set of connection identification transmission units; determines, for each group having an identified locally available connection identifier, an interference estimate; and selects a connection identifier from the identified locally available connection identifiers belonging to a group having an acceptable determined interference estimate.

摘要翻译： 对等系统中希望传送交通信号的无线终端获取与业务传输请求空中链路资源相关联的连接标识符。 在一些实施例中，系统中的空中链路资源被构造成使得每个连接标识符具有与请求传输单元的一对一映射，所述请求传输单元被布置成多个组，并且每个组出现在不同的组中 相同流量时隙的符号时间间隔。 无线终端基于在一组连接识别传输单元中的单独连接识别传输单元上接收的功率，从一组连接标识符识别本地可用的连接标识符; 对于具有所识别的本地可用连接标识符的每个组确定干扰估计; 并且从属于具有可接受的确定干扰估计的组的所识别的本地可用连接标识符中选择连接标识符。

公开(公告)号：US20090017783A1

公开(公告)日：2009-01-15

申请号：US12164431

申请日：2008-06-30

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： H04B1/10

CPC分类号： H04W52/325 ,  H04W28/22 ,  H04W52/10

摘要： A first receiver device receives a first pilot signal from a first transmitter device and a second pilot signal from a second transmitter device. The second pilot signal indicates that the second transmitter device intends to transmit a second traffic signal. The first receiver device determines a transmission rate for the first transmitter device as a function of the received signal strength of the first pilot and a predicted amount of the total interference to be perceived by the first receiver device. The predicted amount of the total interference being determined as a function of a SIC success probability. The transmission rate is sent to the first transmitter device. The first receiver device predicts whether the second traffic signal can be decoded and subtracted before the first receiver device decodes the first traffic signal to be transmitted by the first transmitter device as a function of the SIC success probability.

摘要翻译： 第一接收机设备从第一发射机设备接收第一导频信号和从第二发射机设备接收第二导频信号。 第二导频信号指示第二发射机设备旨在发送第二业务信号。 第一接收机设备根据第一导频的接收信号强度和第一接收机设备感知到的总干扰预测量确定第一发射机设备的传输速率。 总干扰的预测量被确定为SIC成功概率的函数。 传输速率被发送到第一发射机设备。 第一接收机设备预测在第一接收机设备是否将由第一发射机设备发送的第一业务信号作为SIC成功概率的函数来解码和减去第二业务信号。

公开(公告)号：US20090017760A1

公开(公告)日：2009-01-15

申请号：US12164372

申请日：2008-06-30

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： H04B1/00

CPC分类号： H04W28/22 ,  H04W52/16 ,  H04W52/223 ,  H04W52/241 ,  H04W52/267 ,  H04W52/325 ,  H04W52/383 ,  H04W72/08 ,  H04W84/18

摘要： In an ad hoc peer-to-peer communication network between wireless devices, a high priory first receiver device is configured to perform successive interference cancellation (SIC). The first receiver device receives a first transmission request from a first transmitter device indicating that the first transmitter device intends to transmit traffic to the first receiver device. Similarly, the first receiver device receives a second transmission request from an interferer second transmitter device. The first receiver device then determines a transmission rate cap for the interferer second transmitter device based on the signal strengths of the first and second transmission requests and sends it to the interferer second transmitter device. The transmission rate cap is a maximum rate at which the first receiver device can reliably decode traffic signals from the second transmitter device.

摘要翻译： 在无线设备之间的自组织对等通信网络中，高级第一接收机设备被配置为执行连续的干扰消除（SIC）。 第一接收机设备从第一发射机设备接收指示第一发射机设备旨在向第一接收机设备传输业务的第一传输请求。 类似地，第一接收机设备从干扰源第二发射机设备接收第二传输请求。 然后，第一接收机设备基于第一和第二传输请求的信号强度来确定干扰源第二发射机设备的传输速率上限，并将其发送到干扰源第二发射机设备。 传输速率上限是第一接收机设备可以可靠地解码来自第二发射机设备的业务信号的最大速率。

公开(公告)号：US20090016315A1

公开(公告)日：2009-01-15

申请号：US12146939

申请日：2008-06-26

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

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

IPC分类号： H04J3/00

CPC分类号： H04W76/11 ,  H04W72/0466 ,  H04W84/18

摘要： Apparatus and method are provided for generating transmission connection identifiers (CIDs) in a non-orthogonal or pseudo-random manner identifying peer-to-peer connections in a wireless communication network. When a transmitter terminal intends to transmit to its peer receiver terminal, it just picks a transmission CID in a pseudo-random manner, without trying to avoid a similar transmission CID in a neighborhood. The method of generating this pseudo-random transmission CID may be agreed to between the transmitter and its intended receiver beforehand, for example, during the paging cycle. Also, the mapping between the transmission CID and a set of tone/symbols may not necessarily be orthogonal. In one embodiment, the transmission CID may also change over time in a pseudo-random fashion which is different between different transmitter/receiver pairs. With this property, two transmitter/receiver (Tx/Rx) pairs are not likely to use the same transmission CID for consecutive time intervals.

摘要翻译： 提供装置和方法用于以非正交或伪随机方式生成识别无线通信网络中的对等连接的传输连接标识符（CID）。 当发射机终端意图向其对等接收机终端发送时，它只是以伪随机方式选择传输CID，而不试图避免邻近的类似传输CID。 可以例如在寻呼周期期间，事先将发送机与其预期的接收机之间的协议确定为生成该伪随机传输CID的方法。 此外，传输CID和一组音调/符号之间的映射可能不一定是正交的。 在一个实施例中，传输CID也可以以不同的发射机/接收机对之间的伪随机方式随时间改变。 使用此属性，两个发射机/接收机（Tx / Rx）对不可能在连续的时间间隔内使用相同的传输CID。