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.

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：US20070211677A1

公开(公告)日：2007-09-13

申请号：US11621972

申请日：2007-01-10

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

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

IPC分类号： H04Q7/24

CPC分类号： H04W40/244 ,  H04J3/0602 ,  H04L5/0016 ,  H04L5/0035 ,  H04L5/0048 ,  H04L27/2601 ,  H04L27/261 ,  H04W8/005 ,  H04W16/14 ,  H04W28/04 ,  H04W28/18 ,  H04W36/16 ,  H04W36/24 ,  H04W40/24 ,  H04W48/08 ,  H04W48/16 ,  H04W48/20 ,  H04W52/0229 ,  H04W52/04 ,  H04W72/02 ,  H04W76/14 ,  H04W84/042 ,  H04W84/18 ,  H04W88/02 ,  H04W88/04 ,  H04W88/06 ,  H04W88/10 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/22 ,  Y02D70/23

摘要： Systems and methodologies are described that facilitate sharing bandwidth between a wide area network and a local area peer-to-peer network. The peer-to-peer network may use an air interface technology that is similar to distinct from an air interface technology use din the wide area network. Moreover, the wide area network and the local area peer-to-peer network may utilize distinct sets of parameters. For example, if the wide area network and the peer-to-peer network use OFDM-based air interface technologies, parameters such as tone spacing, symbol time, cyclic prefix, and the like of the two networks may vary. Further, peer-to-peer parameters may be a function of parameters for the wide area network.

摘要翻译： 描述了便于在广域网和局域对等网络之间共享带宽的系统和方法。 对等网络可以使用与广域网中的空中接口技术不同的空中接口技术。 此外，广域网和本地对等网络可以利用不同的参数集合。 例如，如果广域网和对等网络使用基于OFDM的空中接口技术，则两个网络的诸如音调间隔，符号时间，循环前缀等参数可以变化。 此外，对等参数可以是广域网的参数的函数。

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：US08923317B2

公开(公告)日：2014-12-30

申请号：US11621967

申请日：2007-01-10

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

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

IPC分类号： H04L12/28

CPC分类号： H04W40/244 ,  H04J3/0602 ,  H04L5/0016 ,  H04L5/0035 ,  H04L5/0048 ,  H04L27/2601 ,  H04L27/261 ,  H04W8/005 ,  H04W16/14 ,  H04W28/04 ,  H04W28/18 ,  H04W36/16 ,  H04W36/24 ,  H04W40/24 ,  H04W48/08 ,  H04W48/16 ,  H04W48/20 ,  H04W52/0229 ,  H04W52/04 ,  H04W72/02 ,  H04W76/14 ,  H04W84/042 ,  H04W84/18 ,  H04W88/02 ,  H04W88/04 ,  H04W88/06 ,  H04W88/10 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/22 ,  Y02D70/23

摘要： Systems and methodologies are described that facilitate detecting and/or identifying peers in a local area peer-to-peer network. Times (e.g., peer discovery intervals) for performance of mutual detection and identification between peers may be synchronized (e.g., based upon a signal broadcast to the peers). Further, within each partitioned peer discovery interval, a wireless terminal may select a portion of time to transmit (e.g., broadcast) short messages that may be employed by peers to detect and/identify the wireless terminal. Moreover, the remainder of the time within the partitioned peer discovery interval may be employed to listen to short messages received from peers.

摘要翻译： 描述了便于在本地区域对等网络中检测和/或识别对等体的系统和方法。 用于执行对等体之间的相互检测和识别的时间（例如，对等设备发现间隔）可以被同步（例如，基于向对等体的信号广播）。 此外，在每个分配的对等设备发现间隔内，无线终端可以选择发送（例如，广播）短消息的一部分时间，所述短消息可被对等体采用以检测和/识别无线终端。 此外，可以采用分区对等设备发现间隔内的剩余时间来收听从对等体接收的短消息。

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。