公开(公告)号：US09084203B2

公开(公告)日：2015-07-14

申请号：US13476541

申请日：2012-05-21

申请人： Ritesh K. Madan ,  Saurabh Tavildar ,  Cyril Measson ,  Junyi Li

发明人： Ritesh K. Madan ,  Saurabh Tavildar ,  Cyril Measson ,  Junyi Li

IPC分类号： H04B7/00 ,  H04W52/24 ,  H04W52/38 ,  H04W52/14

CPC分类号： H04W52/242 ,  H04W52/146 ,  H04W52/243 ,  H04W52/383 ,  H04W52/386

摘要： A method, an apparatus, and a computer program product for wireless communication are provided for using power control to reduce potential interference to a macro eNB by a UE engaged in D2D communications. An eNB may be operable to generate a fractional power control parameter based on a macro eNB power saturation value and broadcast the factional power control parameter. A UE may be equipped to receive the factional power control parameter and determine whether the fractional power control parameter plus a path loss value between the UE and the macro eNB is less than a maximum power used for the D2D communications. The UE may reduce the maximum transmit power used for D2D communications when the fractional power control parameter plus a path loss value between the UE and the macro eNB is less than a maximum power used for the D2D communications.

摘要翻译： 提供了一种用于无线通信的方法，装置和计算机程序产品，用于使用功率控制来减少由参与D2D通信的UE对宏eNB的潜在干扰。 eNB可以用于基于宏eNB功率饱和值生成分数功率控制参数并广播派系功率控制参数。 UE可以被配备为接收派系功率控制参数，并且确定小数功率控制参数加上UE与宏eNB之间的路径损耗值是否小于用于D2D通信的最大功率。 当分数功率控制参数加上UE与宏eNB之间的路径损耗值小于D2D通信使用的最大功率时，UE可以减小用于D2D通信的最大发射功率。

公开(公告)号：US08934353B2

公开(公告)日：2015-01-13

申请号：US12575942

申请日：2009-10-08

申请人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Thomas Richardson

发明人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Thomas Richardson

IPC分类号： H04W52/04 ,  H04W52/50 ,  H04W52/24 ,  H04W52/38

CPC分类号： H04W52/50 ,  H04W52/242 ,  H04W52/38

摘要： Methods and apparatus of varying transmit power of signals for increasing system throughput and spectral reuse in an unlicensed spectrum are disclosed. One method includes transmitting from a first mobile device to a second mobile device a request to send (RTS) signal having a first transmit data power level based on a channel gain between the first mobile device and the second mobile device, receiving, at the first mobile device, a clear to send (CTS) signal from the second mobile device, and transmitting data at the first transmit data power level from the first mobile device to the second mobile device.

摘要翻译： 公开了改变信号发射功率以提高未许可频谱中的系统吞吐量和频谱重用的方法和装置。 一种方法包括：基于第一移动设备和第二移动设备之间的信道增益，从第一移动设备向第二移动设备发送具有第一发送数据功率电平（RTS）信号的请求，在第一移动设备 移动设备，来自第二移动设备的清晰发送（CTS）信号，以及以第一传输数据功率级从第一移动设备向第二移动设备发送数据。

公开(公告)号：US08812676B2

公开(公告)日：2014-08-19

申请号：US12875311

申请日：2010-09-03

申请人： Shailesh Patil ,  Thomas Richardson ,  Xinzhou Wu ,  Junyi Li ,  Saurabh Tavildar ,  Pablo A. Anigstein

发明人： Shailesh Patil ,  Thomas Richardson ,  Xinzhou Wu ,  Junyi Li ,  Saurabh Tavildar ,  Pablo A. Anigstein

IPC分类号： G06F15/173 ,  H04W72/02 ,  H04W72/04 ,  H04W84/18

CPC分类号： H04W72/02 ,  H04W72/0493 ,  H04W72/06 ,  H04W72/085 ,  H04W84/18 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/20

摘要： A method, an apparatus, and a computer program product are provided in which signals are received on each of a plurality of resources and an energy of each of the signals of a set of the plurality of resources is determined. In addition, a resource is determined based on a probability for each of the resources in a subset of the set. The probability for selecting a resource with a lower determined energy is less than one and greater than the probability for selecting a resource with a higher determined energy. Furthermore, a signal is transmitted on the selected resource.

摘要翻译： 提供了一种方法，装置和计算机程序产品，其中在多个资源中的每一个上接收信号，并且确定多个资源集合中的每个信号的能量。 此外，基于集合的子集中的每个资源的概率来确定资源。 选择具有较低确定能量的资源的概率小于1且大于选择具有较高确定能量的资源的概率。 此外，在所选择的资源上发送信号。

公开(公告)号：US08694662B2

公开(公告)日：2014-04-08

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 ,  H04L1/00

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。

公开(公告)号：US20130310103A1

公开(公告)日：2013-11-21

申请号：US13476541

申请日：2012-05-21

申请人： Ritesh K. Madan ,  Saurabh Tavildar ,  Junyi Li ,  Cyril Measson

发明人： Ritesh K. Madan ,  Saurabh Tavildar ,  Junyi Li ,  Cyril Measson

IPC分类号： H04W52/24

CPC分类号： H04W52/242 ,  H04W52/146 ,  H04W52/243 ,  H04W52/383 ,  H04W52/386

摘要： A method, an apparatus, and a computer program product for wireless communication are provided for using power control to reduce potential interference to a macro eNB by a UE engaged in D2D communications. An eNB may be operable to generate a fractional power control parameter based on a macro eNB power saturation value and broadcast the factional power control parameter. A UE may be equipped to receive the factional power control parameter and determine whether the fractional power control parameter plus a path loss value between the UE and the macro eNB is less than a maximum power used for the D2D communications. The UE may reduce the maximum transmit power used for D2D communications when the fractional power control parameter plus a path loss value between the UE and the macro eNB is less than a maximum power used for the D2D communications.

摘要翻译： 提供了一种用于无线通信的方法，装置和计算机程序产品，用于使用功率控制来减少由参与D2D通信的UE对宏eNB的潜在干扰。 eNB可以用于基于宏eNB功率饱和值生成分数功率控制参数并广播派系功率控制参数。 UE可以被配备为接收派系功率控制参数，并且确定小数功率控制参数加上UE与宏eNB之间的路径损耗值是否小于用于D2D通信的最大功率。 当分数功率控制参数加上UE与宏eNB之间的路径损耗值小于D2D通信使用的最大功率时，UE可以减小用于D2D通信的最大发射功率。

公开(公告)号：US08520650B2

公开(公告)日：2013-08-27

申请号：US13177037

申请日：2011-07-06

申请人： Eduardo S. Esteves ,  Junyi Li ,  Saurabh Tavildar

发明人： Eduardo S. Esteves ,  Junyi Li ,  Saurabh Tavildar

IPC分类号： H04Q7/24

CPC分类号： H04B1/713 ,  H04L5/0037 ,  H04L27/2601 ,  H04W8/005

摘要： A method of wireless communication includes splitting data into n data sets, where n is greater than or equal to two. In addition, the method includes selecting n different resources associated with a resource identifier based on a hopping pattern for sending each of the data sets within a set of resources of one full set of transmissions. The selected n resources have a hopping pattern such that there is at least one resource of the n resources that is non-overlapping in time with resources associated with resource identifiers other than said resource identifier. Furthermore, the method includes sending m data sets on m selected resources in m transmissions within the one full set of transmissions, where m is less than or equal to n.

摘要翻译： 一种无线通信方法包括将数据分割为n个数据集，其中n大于或等于2。 另外，该方法包括基于用于在一组完整传输集合的资源集合内发送每个数据集的跳频模式来选择与资源标识符相关联的n个不同资源。 所选择的n资源具有跳频模式，使得存在与资源标识符以外的资源相关联的资源在时间上不重叠的n个资源的至少一个资源。 此外，该方法包括在一个完整的传输集合内的m个传输中的m个选择的资源上发送m个数据集，其中m小于或等于n。

公开(公告)号：US08520524B2

公开(公告)日：2013-08-27

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：US08462874B2

公开(公告)日：2013-06-11

申请号：US12835252

申请日：2010-07-13

申请人： Sundar Subramanian ,  Aleksandar Jovicic ,  Saurabh Tavildar ,  Junyi Li

发明人： Sundar Subramanian ,  Aleksandar Jovicic ,  Saurabh Tavildar ,  Junyi Li

IPC分类号： H04B15/00

CPC分类号： H04L25/03019 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03477 ,  H04L2025/03484 ,  H04L2025/03566

摘要： The methods and apparatus described herein are used to operate a wireless device. One method of operating a wireless device includes filtering a first set of digital samples using a first filter at a first time to generate a first signal, transmitting the first signal, filtering a second set of digital samples using a second filter at a second time to generate a second signal, and transmitting the second signal. In one embodiment, an apparatus for operating a wireless device includes a processor configured to filter, at a first wireless device, a first set of digital samples using a first filter at a first time to generate a first signal, transmit, from the first wireless device, the first signal, and filter, at the first wireless device, a second set of digital samples using a second filter at a second time to generate a second signal.

摘要翻译： 本文描述的方法和装置用于操作无线设备。 操作无线设备的一种方法包括：在第一时间使用第一滤波器对第一组数字采样进行滤波，以产生第一信号，发送第一信号，使用第二滤波器在第二时间对第二组数字采样进行滤波 生成第二信号，并发送第二信号。 在一个实施例中，一种用于操作无线设备的装置包括：处理器，被配置为在第一无线设备处，使用第一滤波器在第一时间处理第一组数字样本，以产生第一信号，从第一无线 在第一无线设备处，使用第二滤波器的第二组数字样本在第二无线设备处，第一信号和滤波器产生第二信号。

公开(公告)号：US20120307698A1

公开(公告)日：2012-12-06

申请号：US13490219

申请日：2012-06-06

申请人： Saurabh Tavildar ,  Ashwin Sampath ,  Junyi Li

发明人： Saurabh Tavildar ,  Ashwin Sampath ,  Junyi Li

IPC分类号： H04W52/02

CPC分类号： H04W56/0015 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/164 ,  Y02D70/22

摘要： Various methods and apparatus are directed to achieving timing synchronization and propagating timing information pertaining to an external, e.g., non Wi-Fi, timing signal source. In some embodiments, a mobile communications device receives and processes a timing signal, e.g., a first Wi-Fi beacon, which is propagating timing information about an external timing signal from a device which directly received the external timing signal. Thus, a mobile wireless communications device achieves timing synchronization with respect to an external timing signal which it is unable to receive directly. In various embodiments, the mobile communications device may, and sometimes does, further propagate the timing information about the external timing signal, e.g., via a second Wi-Fi beacon signal which it generates and transmits. Synchronization with respect to an external signal source facilitates longer sleep states and decreased power consumption.

摘要翻译： 各种方法和装置旨在实现与外部例如非Wi-Fi定时信号源有关的定时同步和传播定时信息。 在一些实施例中，移动通信设备接收并处理定时信号，例如第一Wi-Fi信标，其正在从直接接收到外部定时信号的设备传播关于外部定时信号的定时信息。 因此，移动无线通信设备相对于不能直接接收的外部定时信号实现定时同步。 在各种实施例中，移动通信设备可以并且有时也可以例如经由其产生和发送的第二Wi-Fi信标信号进一步传播关于外部定时信号的定时信息。 相对于外部信号源的同步有助于延长睡眠状态和降低功耗。

公开(公告)号：US08259743B2

公开(公告)日：2012-09-04

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： H04L12/28

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.