公开(公告)号：US09049733B2

公开(公告)日：2015-06-02

申请号：US13542106

申请日：2012-07-05

申请人： Sundar Subramanian ,  Shihuan Liu ,  Xinzhou Wu ,  Thomas J. Richardson ,  Junyi Li

发明人： Sundar Subramanian ,  Shihuan Liu ,  Xinzhou Wu ,  Thomas J. Richardson ,  Junyi Li

IPC分类号： H04Q7/24 ,  H04W72/12 ,  H04W74/08 ,  H04W76/00 ,  H04L29/06

CPC分类号： H04W72/12 ,  H04L69/161 ,  H04W74/0808 ,  H04W74/0816 ,  H04W76/00

摘要： Methods and apparatus for use in a wireless system are described where initiation of packet transmission is constrained in accordance to control actual packet transmission in a manner that reduces contention and possible collisions beyond that provided by lower layer resource contention mechanisms, e.g., 802.11 carrier sensing and/or transmission back-off timing mechanisms. Through higher level, e.g., MAC constraints, on packet transmission initiation, an air interface which employs carrier sensing can be used and controlled in a manner which reduces collisions and interference in applications where small packets, e.g., packets which can be transmitted in a fraction of the maximum permitted transmission time. The methods allow small packets in such systems to be transmitted on a periodic or semi-periodic basis in many cases.

摘要翻译： 描述了在无线系统中使用的方法和装置，其中分组传输的启动根据控制实际分组传输受到限制，其方式是减少竞争和可能的冲突超出由较低层资源争用机制提供的冲突，例如802.11载波检测和 /或传输回退定时机制。 通过更高的级别，例如MAC约束，在分组传输发起时，采用载波侦听的空中接口可以以减少小分组（例如可以以分数传输的分组）的应用中的冲突和干扰的方式被使用和控制 的最大允许传输时间。 这些方法允许这种系统中的小分组在许多情况下以周期性或半周期性的方式传输。

公开(公告)号：US09048960B2

公开(公告)日：2015-06-02

申请号：US13588869

申请日：2012-08-17

申请人： Junyi Li ,  Xinzhou Wu ,  Sundar Subramanian

发明人： Junyi Li ,  Xinzhou Wu ,  Sundar Subramanian

IPC分类号： H04B7/00 ,  H04H20/59 ,  H04W4/04

CPC分类号： H04H20/59 ,  H04W4/046

摘要： Various embodiments, relate to a communications system in which communications devices of users and communications devices of vehicular systems communicate safety messages through a cellular communications band or the DSRC (Dedicated short-range communications) vehicular communications band or a combination of both. Various methods and apparatus are directed to communicating safety messages between vehicles and pedestrians/cyclists through the use of a cell phone, thus improving the impact of vehicular communications. In some embodiments, at least some cell phones in a communications system includes both a DSRC communications capability and a cellular communications capability.

摘要翻译： 各种实施例涉及通信系统，其中用户的通信设备和车辆系统的通信设备通过蜂窝通信频带或DSRC（专用短距离通信）车辆通信频带或两者的组合来传送安全消息。 各种方法和装置旨在通过使用蜂窝电话在车辆和行人/骑自行车者之间传递安全信息，从而改善车辆通信的影响。 在一些实施例中，通信系统中的至少一些蜂窝电话包括DSRC通信能力和蜂窝通信能力。

公开(公告)号：US20130294262A1

公开(公告)日：2013-11-07

申请号：US13464857

申请日：2012-05-04

申请人： Jubin Jose ,  Sundar Subramanian ,  Xinzhou Wu ,  Thomas Joseph Richardson

发明人： Jubin Jose ,  Sundar Subramanian ,  Xinzhou Wu ,  Thomas Joseph Richardson

IPC分类号： H04W24/00

CPC分类号： H04W74/08 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/0009 ,  H04L2001/0093 ,  H04W28/06 ,  H04W36/0088 ,  H04W72/02 ,  H04W84/12 ,  H04W92/18

摘要： A wireless communications device operates in a system where communications resources may be used by multiple devices concurrently. A device, with an acquired set of recurring time intervals, selects, e.g., pseudo-randomly, an interval or intervals to be used as a combined data transmission and channel measurement time interval. The other time intervals in its set are to be used as data transmission time intervals. The combined use type interval facilitates the measurement of interference on the device's channel while still allowing the device to transmit some data during the interval. A combined use interval includes a first portion for data transmission and a second portion for channel measurement. In some embodiments, the first portion is fixed size and the second portion occurs at the very end of the interval. In some embodiments, the duration of the first portion is varied over time such that the channel measurement start time varies.

摘要翻译： 无线通信设备在可以由多个设备同时使用通信资源的系统中操作。 具有所获得的一组循环时间间隔的装置例如选择伪随机地选择要用作组合数据传输和信道测量时间间隔的间隔或间隔。 其集合中的其他时间间隔将用作数据传输时间间隔。 组合使用类型间隔有助于测量设备信道上的干扰，同时仍允许设备在间隔期间传输一些数据。 组合使用间隔包括用于数据传输的第一部分和用于信道测量的第二部分。 在一些实施例中，第一部分是固定尺寸，第二部分发生在间隔的最后端。 在一些实施例中，第一部分的持续时间随着时间而变化，使得信道测量开始时间变化。

公开(公告)号：US08521208B2

公开(公告)日：2013-08-27

申请号：US12835278

申请日：2010-07-13

申请人： Junyi Li ,  Xinzhou Wu ,  Sundar Subramanian

发明人： Junyi Li ,  Xinzhou Wu ,  Sundar Subramanian

IPC分类号： H04B7/10

CPC分类号： H04W52/241 ,  H04W52/243 ,  H04W52/38 ,  H04W52/383

摘要： A method of operating a wireless device is provided in which an interference level on a resource is determined. In addition, a signal is transmitted on the resource with a first power when the interference level is low. The first power is such that the signal is received with a first SNR. Furthermore, the signal is transmitted on the resource with a second power when the interference level is high. The second power is such that the signal is received with a second SNR less than the first SNR.

摘要翻译： 提供一种操作无线设备的方法，其中确定资源上的干扰等级。 此外，当干扰电平低时，以资源发送信号以第一功率。 第一功率使得以第一SNR接收信号。 此外，当干扰电平较高时，以第二功率在资源上发送信号。 第二功率使得以小于第一SNR的第二SNR接收信号。

公开(公告)号：US20130010618A1

公开(公告)日：2013-01-10

申请号：US13323270

申请日：2011-12-12

申请人： Ying Wang ,  Sundar Subramanian ,  Xinzhou Wu ,  Thomas J. Richardson ,  Junyi Li

发明人： Ying Wang ,  Sundar Subramanian ,  Xinzhou Wu ,  Thomas J. Richardson ,  Junyi Li

IPC分类号： H04W24/00

CPC分类号： H04W8/005 ,  H04W84/18

摘要： A method, a computer program product, and an apparatus for wireless communication are provided. The apparatus transmits a first peer discovery signal with a first periodicity/temporal frequency in a first set of peer discovery resources. The apparatus determines an energy on an allocated peer discovery resource of a second set of peer discovery resources. The apparatus refrains from transmitting a second peer discovery signal in the second set of peer discovery resources when the energy is greater than a threshold. The apparatus transmits the second peer discovery signal in the second set of peer discovery resources with a second periodicity/temporal frequency less than the first periodicity/temporal frequency when the energy is less than the threshold. The apparatus may utilize the first set of peer discovery resources every period and the second set of peer discovery resources once every N periods in which once every N periods is the second periodicity.

摘要翻译： 提供了一种方法，计算机程序产品和用于无线通信的装置。 该设备在第一组对等体发现资源中发送具有第一周期/时间频率的第一对等体发现信号。 设备确定第二组对等体发现资源的分配的对等体发现资源上的能量。 当能量大于阈值时，该装置禁止在第二组对等体发现资源中发送第二对等体发现信号。 当能量小于阈值时，该设备以第二周期/时间频率小于第一周期/时间频率，在第二组对等体发现资源中发送第二对等体发现信号。 该装置可以每N个周期每周期利用第一组对等体发现资源和第二组对等体发现资源，其中每N个周期中的一个是第二周期。

公开(公告)号：US09842498B2

公开(公告)日：2017-12-12

申请号：US13323237

申请日：2011-12-12

申请人： Ying Wang ,  Xinzhou Wu ,  Sundar Subramanian ,  Junyi Li ,  Thomas J. Richardson

发明人： Ying Wang ,  Xinzhou Wu ,  Sundar Subramanian ,  Junyi Li ,  Thomas J. Richardson

IPC分类号： G06F19/00 ,  G08G1/0967

CPC分类号： G08G1/096791

摘要： A method, a computer program product, and an apparatus for wireless communication are provided. The apparatus adjusts a number of sets of identifiers in a plurality of sets of identifiers based on traffic information. In addition, the apparatus selects an identifier from a set of identifiers of the plurality of sets of identifiers based on the traffic information. Furthermore, the apparatus communicates using resources associated with the selected identifier. The traffic information may include at least one of direction of travel, map information, velocity, whether approaching an intersection, whether departing an intersection, location, a number of vehicles within a particular area, information from other vehicles, type of intersection, whether the intersection includes stop lights or stop signs, at least one computed value based on acquired traffic information, or information from other wireless devices.

公开(公告)号：US08812008B2

公开(公告)日：2014-08-19

申请号：US13073847

申请日：2011-03-28

申请人： Hua Wang ,  Shailesh Patil ,  Xinzhou Wu ,  Junyi Li ,  Sundar Subramanian

发明人： Hua Wang ,  Shailesh Patil ,  Xinzhou Wu ,  Junyi Li ,  Sundar Subramanian

IPC分类号： H04W72/00 ,  H04W72/08 ,  H04W24/10

CPC分类号： H04W72/085 ,  H04W24/10 ,  H04W72/042

摘要： A method of operating a wireless device includes determining an energy on each of a plurality of resources for broadcasting CIDs, sending information to a base station based on the determined energy for each of the CIDs, and receiving a CID from the base station. The received CID is one of the CIDs determined based on the information. A method of wireless communication includes receiving first information about a first plurality of CIDs from a first wireless device, receiving second information about a second plurality of CIDs from a second wireless device, comparing the first information and the second information to determine a subset of CIDs based on the first plurality of CIDs and the second plurality of CIDs, selecting a CID based on the subset of CIDs, and sending the selected CID to at least one of the first wireless device or the second wireless device.

摘要翻译： 操作无线设备的方法包括：确定用于广播CID的多个资源中的每一个上的能量，基于所确定的每个CID的能量向基站发送信息，以及从基站接收CID。 所接收的CID是基于该信息确定的CID之一。 一种无线通信方法包括从第一无线设备接收关于第一多个CID的第一信息，从第二无线设备接收关于第二多个CID的第二信息，比较第一信息和第二信息以确定CID的子集 基于所述第一多个CID和所述第二多个CID，基于所述CID的子集来选择CID，以及将所选择的CID发送到所述第一无线设备或所述第二无线设备中的至少一个。

公开(公告)号：US20140051346A1

公开(公告)日：2014-02-20

申请号：US13588869

申请日：2012-08-17

申请人： Junyi Li ,  Xinzhou Wu ,  Sundar Subramanian

发明人： Junyi Li ,  Xinzhou Wu ,  Sundar Subramanian

IPC分类号： H04H20/59

CPC分类号： H04H20/59 ,  H04W4/046

摘要： Various embodiments, relate to a communications system in which communications devices of users and communications devices of vehicular systems communicate safety messages through a cellular communications band or the DSRC (Dedicated short-range communications) vehicular communications band or a combination of both. Various methods and apparatus are directed to communicating safety messages between vehicles and pedestrians/cyclists through the use of a cell phone, thus improving the impact of vehicular communications. In some embodiments, at least some cell phones in a communications system includes both a DSRC communications capability and a cellular communications capability.

摘要翻译： 各种实施例涉及通信系统，其中用户的通信设备和车辆系统的通信设备通过蜂窝通信频带或DSRC（专用短距离通信）车辆通信频带或两者的组合来传送安全消息。 各种方法和装置旨在通过使用蜂窝电话在车辆和行人/骑自行车者之间传递安全信息，从而改善车辆通信的影响。 在一些实施例中，通信系统中的至少一些蜂窝电话包括DSRC通信能力和蜂窝通信能力。

公开(公告)号：US08600411B2

公开(公告)日：2013-12-03

申请号：US13570109

申请日：2012-08-08

申请人： Sundar Subramanian ,  Xinzhou Wu ,  Junyi Li

发明人： Sundar Subramanian ,  Xinzhou Wu ,  Junyi Li

IPC分类号： H04W24/00

CPC分类号： H04W4/02 ,  B61L15/0027 ,  B61L25/025 ,  B61L29/246 ,  B61L29/28 ,  B61L2205/04 ,  G08G1/093 ,  G08G1/163 ,  G08G1/166 ,  H04W4/021 ,  H04W4/046 ,  H04W4/80

摘要： Safety message monitoring operations and/or safety message transmission operations are controlled for a mobile wireless communications device. The periodicity with regard to safety message monitoring and/or safety message transmissions is varied based on the environment of the mobile wireless device. The transmission power level with regard to safety message transmissions is varied based on the environment of the mobile wireless device. In some embodiments, safety message monitoring and transmission operations are disabled when the mobile device is determined to be inside a building or inside a vehicle. In some embodiments, safety message monitoring rate and safety message transmission rate is varied as a function of proximity to vehicular traffic and/or the level of detected vehicular traffic. In some embodiments, safety message transmission power level is varied as a function of proximity to vehicular traffic and/or the level of detected vehicular traffic.

摘要翻译： 控制移动无线通信设备的安全消息监视操作和/或安全消息传输操作。 基于移动无线设备的环境来改变关于安全消息监视和/或安全消息传输的周期性。 关于安全消息传输的传输功率电平根据移动无线设备的环境而变化。 在一些实施例中，当确定移动设备在建筑物内或车辆内部时，安全消息监视和传输操作被禁用。 在一些实施例中，安全消息监视速率和安全消息传输速率作为与车辆交通的接近度和/或检测到的车辆交通的水平的函数而变化。 在一些实施例中，安全消息传输功率电平作为与车辆交通的接近度和/或检测到的车辆交通的水平而变化。

公开(公告)号：US20130273951A1

公开(公告)日：2013-10-17

申请号：US13448174

申请日：2012-04-16

申请人： Ying Wang ,  Sundar Subramanian ,  Xinzhou Wu ,  Junyi Li ,  Thomas J. Richardson

发明人： Ying Wang ,  Sundar Subramanian ,  Xinzhou Wu ,  Junyi Li ,  Thomas J. Richardson

IPC分类号： H04W72/02

CPC分类号： H04W72/02 ,  H04W72/005 ,  H04W84/18

摘要： A method, a computer program product, and an apparatus for wireless communication are provided. The apparatus transmits broadcast information in a first broadcast resource from a first set of broadcast resources. In addition, the apparatus determines based on the broadcast information a need for a second broadcast resource from a second set of broadcast resources. Furthermore, the apparatus selects the second broadcast resource based on a priority associated with the first broadcast resource.

摘要翻译： 提供了一种方法，计算机程序产品和用于无线通信的装置。 该装置从第一组广播资源发送第一广播资源中的广播信息。 此外，该装置基于广播信息，从第二组广播资源中确定需要第二广播资源。 此外，设备基于与第一广播资源相关联的优先级来选择第二广播资源。