公开(公告)号：US20090016231A1

公开(公告)日：2009-01-15

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

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.

公开(公告)号：US09084231B2

公开(公告)日：2015-07-14

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： H04W4/00 ,  H04L12/28 ,  H04W76/02 ,  H04W8/00 ,  H04W84/18

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：US08989817B2

公开(公告)日：2015-03-24

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： H04M1/00 ,  H04W16/12 ,  H04B7/10 ,  H04W52/42 ,  H04W16/24

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：US08874040B2

公开(公告)日：2014-10-28

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： H04W72/00 ,  H04W52/32 ,  H04W28/22 ,  H04W52/26 ,  H04W84/18 ,  H04W52/24 ,  H04W52/16 ,  H04W72/08 ,  H04W52/22

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：US08693336B2

公开(公告)日：2014-04-08

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： H04L12/26

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：US08687479B2

公开(公告)日：2014-04-01

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： H04J11/00

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：US08526410B2

公开(公告)日：2013-09-03

申请号：US11774498

申请日：2007-07-06

申请人： Junyi Li ,  Rajiv Laroia ,  Xinzhou Wu

发明人： Junyi Li ,  Rajiv Laroia ,  Xinzhou Wu

IPC分类号： H04W4/00 ,  H04W36/00

CPC分类号： H04W52/243 ,  H04W52/383

摘要： Methods and apparatus related to the sharing of wide area network (WAN) downlink bandwidth with peer to peer communication signaling usage are described. A WAN, e.g., cellular, wireless communications device using a base station attachment point, transmits a signal to be used by a peer to peer wireless communications device for controlling its peer to peer transmit power level. The peer to peer wireless communications device receives and measures the strength of the power control signal from the WAN wireless communications device. The measurement information is used by the peer to peer wireless communications device in determining whether or not peer to peer signal transmission is permitted and/or in determining a peer to peer transmission power level. Thus the WAN device is able to manage interference from the peer to peer devices in its vicinity which impacts its recovery of WAN base station downlink signals.

摘要翻译： 描述了与广域网（WAN）下行带宽共享的对等通信信令使用相关的方法和设备。 WAN（例如，使用基站附接点的蜂窝式无线通信设备）发送要由对等无线通信设备使用以控制其对等发射功率电平的信号。 对等无线通信设备接收并测量来自WAN无线通信设备的功率控制信号的强度。 测量信息由对等无线通信设备用于确定是否允许对等信号传输和/或确定对等传输功率级别。 因此，WAN设备能够管理来自其附近的对等设备的干扰，从而影响其WAN基站下行链路信号的恢复。

公开(公告)号：US08493956B2

公开(公告)日：2013-07-23

申请号：US11933009

申请日：2007-10-31

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

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

IPC分类号： H04B7/212

CPC分类号： H04W74/00 ,  H04W72/12

摘要： Methods and apparatus related to the communication of traffic in peer to peer communications are described. A peer to peer communications system includes traffic slots, and for a pair of devices having a connection a first transmission request resource and a second transmission request resource are associated with a traffic transmission interval of the traffic slot, the first request resource preceding the second request resource. The first request resource is used for the first device to communicate a request to transmit traffic to the second device. The second request resource is used to communicate a request from the second device to transmit traffic to the first device. One protocol calls for a second resource request to override a first resource request. In another protocol the second resource is used to communicate additional information corresponding to a first resource request, when a request is communicated in the first resource.

摘要翻译： 描述了与对等通信中流量通信有关的方法和设备。 对等通信系统包括业务时隙，并且对于具有连接的一对设备，第一传输请求资源和第二传输请求资源与业务时隙的业务传输间隔相关联，所述第二请求之前的第一请求资源 资源。 第一请求资源用于第一设备传送要向第二设备传输流量的请求。 第二请求资源用于传送来自第二设备的请求以将流量传输到第一设备。 一个协议要求第二个资源请求来覆盖第一个资源请求。 在另一协议中，当在第一资源中传送请求时，第二资源用于传送与第一资源请求对应的附加信息。

公开(公告)号：US08340044B2

公开(公告)日：2012-12-25

申请号：US12146972

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： H04W4/00

CPC分类号： H04W72/02 ,  H04W48/12 ,  H04W68/00

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：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.