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：US08160039B2

公开(公告)日：2012-04-17

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： H04W4/00

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：US08140103B2

公开(公告)日：2012-03-20

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：US07876701B2

公开(公告)日：2011-01-25

申请号：US12169087

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： H04L12/26 ,  H04L12/28

CPC分类号： H04L5/0091 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0062 ,  H04W72/082 ,  H04W72/1231 ,  H04W72/1278 ,  H04W74/002 ,  H04W84/18

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，其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：US20100120445A1

公开(公告)日：2010-05-13

申请号：US12267923

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： H04W72/00 ,  H04M1/00

CPC分类号： H04W28/24

摘要： Methods and apparatus for making communications decisions are described. In some embodiments, a method includes recovering a first quality of service level from a first transmission request signal directed to a second communications device, and making a decision whether or not to transmit traffic data to a third communications device based on the recovered first quality of service level. In other embodiments a method includes recovering a first quality of service level from a first transmission request signal, and making a decision whether or not to transmit a first transmission request response signal in response to a second transmission request signal based on the recovered first quality of service level. In some embodiments, the phase of the transmission request signal is used to communicate the quality of service level. The device transmitting the transmission request signal 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，一种方法包括从指向第二通信设备的第一传输请求信号恢复第一服务质量等级，以及基于恢复的第一质量来决定是否向第三通信设备发送业务数据 服务水平。 在其他实施例中，一种方法包括从第一传输请求信号恢复第一服务质量等级，并且基于恢复的第一质量判定是否响应于第二传输请求信号来发送第一传输请求响应信号 服务水平。 在一些实施例中，传输请求信号的相位用于传达服务质量水平。 发送发送请求信号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：US20090232142A1

公开(公告)日：2009-09-17

申请号：US12047761

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： H04L12/56

CPC分类号： H04W8/26 ,  H04W72/10 ,  H04W84/18

摘要： Methods and apparatus related to scheduling and/or utilization of air link traffic resources are described. A connection identifier is associated with priority with regard to use of an air link resource, e.g., a peer to peer traffic segment which is in contention. A particular connection may acquire and hold one or multiple connection identifiers. In some embodiments, the priority associated with a particular connection identifier is intentionally varied in a set of traffic slots. In some such embodiments, there is priority randomization from slot to slot. In one such implementation there is a statistically uniform average priority between the different connection identifiers over the recurring structure. Such an implementation facilitates access to traffic segments to a wide range of users, yet allows for differentiation with regard to the amount of access as a function of the number of connection identifiers being held by a particular connection.

摘要翻译： 描述与空中链路业务资源的调度和/或利用相关的方法和装置。 关于使用空中链路资源（例如，竞争中的对等业务段），连接标识符与优先级相关联。 特定连接可以获取和保存一个或多个连接标识符。 在一些实施例中，与特定连接标识符相关联的优先级有意在一组业务时隙中变化。 在一些这样的实施例中，存在从时隙到时隙的优先随机化。 在一个这样的实现中，在重复结构上，在不同的连接标识符之间具有统计上均匀的平均优先级。 这样的实现便于对广泛的用户访问业务段，但是允许根据由特定连接持有的连接标识符的数量的访问量的差异。

公开(公告)号：US20090227291A1

公开(公告)日：2009-09-10

申请号：US12043821

申请日：2008-03-06

申请人： Xinzhou Wu ,  Vikram Reddy Anreddy ,  Junyi Li ,  Rajiv Laroia

发明人： Xinzhou Wu ,  Vikram Reddy Anreddy ,  Junyi Li ,  Rajiv Laroia

IPC分类号： H04B7/06 ,  H04M1/00

CPC分类号： H04W16/12 ,  H04B7/10 ,  H04W16/24 ,  H04W52/42

摘要： Method and apparatus related to implementing and/or utilizing different polarization antennas with different corresponding average transmit power levels are described. Inter-cell interference is mitigated by having different cells with different power relationships between polarizations antennas. For example, a first base station transmits at a high average power level on its vertical polarization antenna and transmits at a low average power level on its horizontal polarization antenna. Concurrently, a second base station, which is adjacent to the first base station, transmits at a low average power level on its vertical polarization antenna and transmits at a high average power level on its horizontal polarization antenna. In some hexagonal deployment schemes a base station has at most two adjacent base stations using the same power level to antenna polarization direction relationship as it is using.

摘要翻译： 描述了实现和/或利用具有不同对应的平均发射功率电平的不同极化天线相关的方法和装置。 通过在极化天线之间具有不同功率关系的不同单元来减轻小区间干扰。 例如，第一基站在其垂直极化天线上以高平均功率电平发送，并在其水平极化天线上以低平均功率电平进行发送。 同时，与第一基站相邻的第二基站在其垂直极化天线上以低平均功率电平进行发送，并以其水平极化天线上的高平均功率电平进行发送。 在一些六边形部署方案中，基站具有至多两个相邻基站，其使用与其正在使用的天线偏振方向关系相同的功率电平。

公开(公告)号：US20090019150A1

公开(公告)日：2009-01-15

申请号：US12168721

申请日：2008-07-07

申请人： Junyi Li ,  Xinzhou Wu ,  Rajiv Laroia ,  Aleksandar Jovicic

发明人： Junyi Li ,  Xinzhou Wu ,  Rajiv Laroia ,  Aleksandar Jovicic

IPC分类号： G06F15/173

CPC分类号： H04B7/086 ,  H04W72/0406 ,  H04W72/046 ,  H04W72/08 ,  H04W84/18

摘要： One feature provides for establishing an ad hoc peer-to-peer network over an existing channel allocation for another network. To mitigate interference between multiple peer-to-peer devices, a plurality of receiver chains in a receiver device may be configured with beamforming coefficients so as to focus reception in the direction of an intended signal from a transmitter device while minimizing reception from other directions. Similarly, the receiver device may also use a plurality of antennas and a transmitter chain to beamform in the direction of the transmitter device, thereby focusing its transmission toward the transmitter device. The receiver device may also notify nearby devices that it is employing a plurality of receive antennas. This information can be used by the nearby devices to more intelligently perform transmitter yielding. By utilizing beamforming information to make the transmitter and/or receiver yielding decision, better interference mitigation may be achieved.

摘要翻译： 一个特征提供了通过用于另一网络的现有信道分配来建立自组织对等网络。 为了减轻多个对等设备之间的干扰，接收机设备中的多个接收器链可以被配置成具有波束成形系数，以便在来自发射机设备的预期信号的方向上聚焦接收，同时最小化从其他方向的接收。 类似地，接收机设备还可以使用多个天线和发射机链在发射机设备的方向上波束成形，从而将其传输集中到发射机设备。 接收机设备还可以通知附近的设备它正在采用多个接收天线。 该信息可被附近的设备用于更智能地执行发射机的收发。 通过利用波束成形信息来使发射机和/或接收机产生决定，可以实现更好的干扰减轻。

公开(公告)号：US20090019113A1

公开(公告)日：2009-01-15

申请号：US12166594

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： G06F15/16

CPC分类号： H04L12/1881 ,  H04L12/1886 ,  H04L12/189 ,  H04W4/08 ,  H04W72/10 ,  H04W84/18

摘要： Methods and apparatus supporting group communications in a peer to peer wireless network are described. Methods and apparatus are directed to implementations with 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. 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. Approaches for implementing distributed scheduling for traffic air link resources which may carry group traffic signals and/or peer to peer traffic signals are described. Various aspects are directed to the transmitter side including: group traffic transmission request transmissions, reception of request response signaling, transmitter yielding decisions, group rate determination and/or group traffic data signaling. Other aspects are directed to the receiver side including: reception of group traffic transmission request signals, receiver yielding decisions, transmitting group request responses signals, and/or receiving group traffic signaling.

摘要翻译： 描述了对等无线网络中支持组通信的方法和装置。 方法和装置涉及具有封闭组的实现，例如，其中组成员的数量在给定时间是固定的并且对于该组的一个或多个成员而言是已知的。 各种实施例非常适合于分散的对等无线网络，包括多个单独的业务资源，例如可以独立调度的业务时隙和/或业务段。 描述了可能携带组交通信号和/或对等业务信号的用于业务空中链路资源的分布式调度的方法。 各个方面涉及发射机侧，包括：组业务传输请求传输，请求响应信令的接收，发射机发射决定，组速率确定和/或组业务数据信令。 其他方面针对接收机侧，包括：接收群组业务传输请求信号，接收机产生决定，发送组请求响应信号和/或接收群组业务信令。