公开(公告)号：US08139531B2

公开(公告)日：2012-03-20

申请号：US12168704

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： H04W4/00

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：US20090109850A1

公开(公告)日：2009-04-30

申请号：US11932934

申请日：2007-10-31

申请人： Junyi Li ,  Rajiv Laroia ,  Thomas Richardson ,  Xinzhou Wu

发明人： Junyi Li ,  Rajiv Laroia ,  Thomas Richardson ,  Xinzhou Wu

IPC分类号： H04L12/28

CPC分类号： H04W72/1242 ,  H04W72/1231 ,  H04W74/00

摘要： A peer to peer communications system implements scheduling of traffic intervals in a distributed manner utilizing connection priority and interference information. A peer to peer timing structure includes a user scheduling interval, with ordered transmission request and response intervals, and an associated traffic interval. The priority associated with a request of an early interval is higher than the priority of a request of a later interval. A first device, connected to a second device, makes a decision as to whether or not to yield the traffic interval as a function of estimated interference that it will impose on higher priority connection receivers if it transmits during the traffic interval. The second device makes a decision as to whether or not to transmit a positive transmission request response signal as a function of a generated received signal quality value, based on received requests for its own and for higher priority connections.

摘要翻译： 对等通信系统利用连接优先级和干扰信息，以分布式实现业务间隔调度。 对等定时结构包括具有有序传输请求和响应间隔的用户调度间隔以及相关联的业务间隔。 与早期间隔的请求相关联的优先级高于稍后间隔的请求的优先级。 连接到第二设备的第一设备决定是否产生作为估计干扰的业务间隔的函数，如果它在业务间隔期间发送，则将对其施加在较高优先级的连接接收机上。 第二装置基于接收到的对其自身的请求和对于较高优先级的连接来决定是否发送作为生成的接收信号质量值的函数的正传输请求响应信号。

公开(公告)号：US20090019173A1

公开(公告)日：2009-01-15

申请号：US12166634

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： G06F15/16

CPC分类号： H04W72/005

摘要： Methods and apparatus related to broadcasting data in a peer to peer wireless communications network are described. A timing structure is utilized employing slots of a first type which support broadcast traffic transmissions and unicast traffic transmissions and slots of a second type which support unicast traffic transmission but do not support broadcast traffic transmissions. In various embodiments, traffic air link resource scheduling is performed in a decentralized manner on a slot by slot basis. In some such embodiments, a wireless device prior to transmitting a broadcast data traffic signal, transmits a broadcast transmission request signal, sometimes alternatively referred to as a broadcast indicator signal; and a wireless device prior to transmitting a peer to peer unicast signal, transmits a peer to peer traffic transmission request signal. In various embodiments, for slots of the first type, broadcast transmission requests have priority over peer to peer unicast transmission requests.

摘要翻译： 描述了在对等无线通信网络中与广播数据有关的方法和装置。 使用支持广播业务传输和单播业务传输的第一类型的时隙和支持单播业务传输但不支持广播业务传输的第二类型的时隙的定时结构。 在各种实施例中，在逐个基础上以分散的方式执行业务空中链路资源调度。 在一些这样的实施例中，在发送广播数据业务信号之前的无线设备发送广播传输请求信号，有时可替代地称为广播指示符信号; 以及在发送对等单播信号之前的无线设备，发送对等业务传输请求信号。 在各种实施例中，对于第一类型的时隙，广播传输请求具有优先于对等单播传输请求的优先权。

公开(公告)号：US20090019165A1

公开(公告)日：2009-01-15

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： G06F15/16

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：US20090017801A1

公开(公告)日：2009-01-15

申请号：US12147083

申请日：2008-06-26

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

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

IPC分类号： H04M3/42

CPC分类号： H04W76/11 ,  H04W48/16

摘要： A first device is configured to select and utilize a connection identifier (CID) for a peer-to-peer communication connection between the first device and a second device in a wireless communications network. The CID is selected from a predetermined set of a plurality of CIDs. Prior to selecting the connection identifier, the first device monitors a CID broadcast channel to determine whether the CID is being utilized by other nearby connections. If it is determined that the CID is being utilized by another connection in the proximity, a different (unused) CID is selected. A transmission request is transmitted to the second device using a first transmission resource unit within a traffic control channel slot, the first transmission resource unit being determined as a function of the selected CID. The first device transmits traffic data to the second device in a traffic channel slot corresponding to the traffic control channel slot.

摘要翻译： 第一设备被配置为选择和利用用于无线通信网络中的第一设备和第二设备之间的对等通信连接的连接标识符（CID）。 CID从预定的多个CID组中选择。 在选择连接标识符之前，第一设备监视CID广播信道以确定CID是否被其他附近的连接利用。 如果确定CID正在邻近的另一连接被使用，则选择不同的（未使用的）CID。 使用业务控制信道时隙内的第一传输资源单元将传输请求发送到第二设备，第一传输资源单元被确定为所选择的CID的函数。 第一设备在对应于业务控制信道时隙的业务信道时隙中向第二设备发送业务数据。

公开(公告)号：US20090017761A1

公开(公告)日：2009-01-15

申请号：US12164394

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： H04B15/00

CPC分类号： H04B1/71072 ,  H04L1/0003 ,  H04L1/0025 ,  H04L1/0048 ,  H04W28/22 ,  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. A first pilot signal is received by the first receiver device from the first transmitter device. Similarly, a second pilot signal is received from a second transmitter device, the second pilot signal indicating that the second transmitter device intends to transmit a second traffic signal. The first receiver device determines a first and a second transmission rates for traffic transmissions from the first transmitter device. A control message is then transmitted by the first receiver device to the first transmitter device including the first and second transmission rates. Subsequently, the first receiver device wirelessly receives a traffic signal including a first traffic signal from the first transmitter device including a first and a second signal components generated from a first and a second codewords, respectively.

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。 第一接收机设备从第一发射机设备接收第一导频信号。 类似地，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想要传输第二业务信号。 第一接收机设备确定用于来自第一发射机设备的业务传输的第一和第二传输速率。 然后，控制消息由第一接收机设备发送到包括第一和第二传输速率的第一发射机设备。 随后，第一接收机设备无线地接收包括来自第一发射机设备的第一业务信号的业务信号，其包括分别从第一和第二码字产生的第一和第二信号分量。

公开(公告)号：US20090016311A1

公开(公告)日：2009-01-15

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： H04B7/216 ,  H04Q7/00

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：US20090016285A1

公开(公告)日：2009-01-15

申请号：US12166675

申请日：2008-07-02

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： H04L25/0226 ,  H04B7/15542 ,  H04L1/0002 ,  H04L1/0023 ,  H04L1/20 ,  H04L5/0007 ,  H04L5/0033 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/006 ,  H04L25/0228 ,  H04L27/2647 ,  H04L47/10 ,  H04L47/14 ,  H04L47/263 ,  H04W28/12 ,  H04W72/02 ,  H04W72/085

摘要： Methods and apparatus for performing channel estimation and reporting back channel information or other information such as a suggested traffic transmission rate are described. A signal including a pilot signal of interest is received. Portions of the signal corresponding to the pilot signal are analyzed to determine if any of the portions, e.g., signal portions corresponding to individual tone symbols used to communicate the pilot signal, were subject to excessive interference, such as might be the result of collisions, rendering the signal portions unreliable. Signal sub-portions determined to be unreliable are excluded from a determination of the amount of pilot signal energy that was received. Signal interference is determined from a portion of the received signal on which the pilot signal was not transmitted. Channel information in the form of information and/or a suggested traffic rate may be reported back to the device which transmitted the pilot signal.

摘要翻译： 描述用于执行信道估计和报告返回信道信息或诸如建议的业务传输速率的其他信息的方法和装置。 接收包括感兴趣的导频信号的信号。 分析对应于导频信号的信号的部分，以确定是否有任何部分，例如，对应于用于传送导频信号的各个音调符号的信号部分遭受过度干扰，例如可能是碰撞的结果， 使信号部分不可靠。 被确定为不可靠的信号子部分从接收到的导频信号能量的确定中排除。 信号干扰是从不在其上传送导频信号的接收信号的一部分确定的。 以信息形式和/或建议的业务速率的信道信息可以被报告回发送导频信号的设备。

公开(公告)号：US20090016284A1

公开(公告)日：2009-01-15

申请号：US12147049

申请日：2008-06-26

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

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

IPC分类号： H04Q7/20

CPC分类号： H04W8/26 ,  H04W24/00 ,  H04W48/08 ,  H04W76/10 ,  H04W92/18

摘要： A first device is configured to select and utilize a connection identifier (CID) for a peer-to-peer communication connection between the first device and a second device in a wireless communications network. The CID is selected from a predetermined set of a plurality of CIDs. Prior to selecting the connection identifier, the first device monitors a CID broadcast channel to determine whether the CID is being utilized by other nearby connections. If it is determined that the CID is being utilized by another connection in the proximity, a different (unused) CID is selected. A transmission request is transmitted to the second device using a first transmission resource unit within a traffic management channel slot, the first transmission resource unit being determined as a function of the selected CID. The first device transmits traffic data to the second device in a traffic channel slot corresponding to the traffic management channel slot.

公开(公告)号：US20090016271A1

公开(公告)日：2009-01-15

申请号：US12168662

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.