公开(公告)号：US20130010767A1

公开(公告)日：2013-01-10

申请号：US13454963

申请日：2012-04-24

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： H04W72/04 ,  H04W4/00

CPC分类号： H04W72/005

摘要： A method, a computer program product, and an apparatus are provided. In one configuration, the apparatus transmits a first broadcast signal including information indicating an intention to use a unicast resource for a broadcast. In addition, the apparatus transmits a second broadcast signal in the unicast resource. In another configuration, the apparatus, which is a first wireless device, receives a first broadcast signal from a second wireless device including information indicating an intention to use a unicast resource for a broadcast. In addition, the apparatus receives a first scheduling signal from the second wireless device in a scheduling resource. The first scheduling signal is for indicating a second intention to use the unicast resource for transmitting a second broadcast signal. Furthermore, the apparatus refrains from transmitting a second scheduling signal in the scheduling resource in response to the first scheduling signal.

摘要翻译： 提供了一种方法，计算机程序产品和装置。 在一种配置中，设备发送包括表示使用广播资源的意图的信息的第一广播信号。 另外，该装置在单播资源中发送第二广播信号。 在另一种配置中，作为第一无线设备的设备从第二无线设备接收包括指示使用用于广播的单播资源的意图的信息的第一广播信号。 此外，该装置在调度资源中从第二无线装置接收第一调度信号。 第一调度信号用于指示使用单播资源发送第二广播信号的第二意图。 此外，该设备响应于第一调度信号，避免在调度资源中发送第二调度信号。

公开(公告)号：US20120008571A1

公开(公告)日：2012-01-12

申请号：US12832808

申请日：2010-07-08

申请人： Junyi Li ,  Xinzhou Wu ,  Sundar Subramanian ,  Nilesh Khude

发明人： Junyi Li ,  Xinzhou Wu ,  Sundar Subramanian ,  Nilesh Khude

IPC分类号： H04W72/12

CPC分类号： H04W74/0825 ,  H04W76/11 ,  H04W84/18

摘要： A method of operating a wireless device includes selecting a connection identifier with a first node, receiving a scheduling control signal on a resource associated with the connection identifier, and determining a presence of a second node transmitting on the same resource associated with the connection identifier based on the received scheduling control signal.

摘要翻译： 一种操作无线设备的方法包括：选择与第一节点的连接标识符，在与所述连接标识符相关联的资源上接收调度控制信号，以及确定在与所述连接标识符相关联的相同资源上发送的第二节点的存在 对接收到的调度控制信号。

公开(公告)号：US09237553B2

公开(公告)日：2016-01-12

申请号：US13454963

申请日：2012-04-24

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： H04W72/00

CPC分类号： H04W72/005

摘要： A method, a computer program product, and an apparatus are provided. In one configuration, the apparatus transmits a first broadcast signal including information indicating an intention to use a unicast resource for a broadcast. In addition, the apparatus transmits a second broadcast signal in the unicast resource. In another configuration, the apparatus, which is a first wireless device, receives a first broadcast signal from a second wireless device including information indicating an intention to use a unicast resource for a broadcast. In addition, the apparatus receives a first scheduling signal from the second wireless device in a scheduling resource. The first scheduling signal is for indicating a second intention to use the unicast resource for transmitting a second broadcast signal. Furthermore, the apparatus refrains from transmitting a second scheduling signal in the scheduling resource in response to the first scheduling signal.

摘要翻译： 提供了一种方法，计算机程序产品和装置。 在一种配置中，设备发送包括表示使用广播资源的意图的信息的第一广播信号。 另外，该装置在单播资源中发送第二广播信号。 在另一种配置中，作为第一无线设备的设备从第二无线设备接收包括指示使用用于广播的单播资源的意图的信息的第一广播信号。 此外，该装置在调度资源中从第二无线装置接收第一调度信号。 第一调度信号用于指示使用单播资源发送第二广播信号的第二意图。 此外，该设备响应于第一调度信号，避免在调度资源中发送第二调度信号。

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：US08630307B2

公开(公告)日：2014-01-14

申请号：US13231417

申请日：2011-09-13

申请人： Xinzhou Wu ,  Thomas J. Richardson ,  Junyi Li ,  Sundar Subramanian ,  Nilesh Khude

发明人： Xinzhou Wu ,  Thomas J. Richardson ,  Junyi Li ,  Sundar Subramanian ,  Nilesh Khude

IPC分类号： H04L12/413 ,  G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26

CPC分类号： H04W28/0289 ,  H04W74/08 ,  H04W84/18

摘要： Methods and apparatus for allocating traffic contention resource units in a wireless communications system in which decisions are made in a distributed manner are described. A wireless communications device, corresponding to a link, self allocates resource units for traffic contention. Decisions regarding initially acquiring resources, relinquishing acquired resources, and/or acquiring additional resources for traffic contention are based on detected levels of network congestion and/or detected changes in network congestion. A wireless communications device detects a level of network congestion and determines a number of resource units to acquire for traffic contention based on the detected level of network congestion.

摘要翻译： 描述在以分布式方式进行决定的无线通信系统中分配业务竞争资源单元的方法和装置。 对应于链路的无线通信设备自行分配用于流量争用的资源单元。 关于初始获取资源，放弃获得的资源和/或获取用于流量争用的额外资源的决定基于网络拥塞的检测水平和/或检测到的网络拥塞变化。 无线通信设备检测网络拥塞程度，并根据检测到的网络拥塞水平，确定获取用于流量争用的资源单元数量。

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：US20110205887A1

公开(公告)日：2011-08-25

申请号：US12712629

申请日：2010-02-25

申请人： Xinzhou Wu ,  Junyi Li ,  Nilesh Khude ,  Sundar Subramanian

发明人： Xinzhou Wu ,  Junyi Li ,  Nilesh Khude ,  Sundar Subramanian

IPC分类号： H04B7/00 ,  H04L12/56

CPC分类号： H04W52/343 ,  H04W52/322 ,  H04W52/46

摘要： A wireless communications device supports a constant transmission power mode of operation and a time varying transmission power mode of operation for transmitting data, e.g., peer discovery data. The device determines an amount of network congestion and switches between the two modes of operation as a function of the determined amount of network congestion. Various described methods and apparatus are well suited for use in a peer to peer ad hoc wireless communications system in which a limited amount of air link resources are available for peer discovery signaling and the same peer discovery resources are, at times, used concurrently by multiple devices. When network congestion is low, the device operates in the constant transmission power mode. When network congestion is high, the device operates in the time varying power mode. Devices sharing a common peer discovery resource in a local area intentionally select different time varying transmission patterns.

摘要翻译： 无线通信设备支持恒定的发送功率操作模式和用于发送数据的时变发送功率操作模式，例如对等体发现数据。 该设备确定网络拥塞量，并根据确定的网络拥塞量来确定两种运营模式之间的切换。 各种描述的方法和装置非常适合用于对等自组织无线通信系统中，其中有限量的空中链路资源可用于对等体发现信令，同时有同样的对等体发现资源由多个 设备。 当网络拥塞低时，设备以恒定的传输功率模式工作。 当网络拥塞较高时，设备在时变功率模式下工作。 在本地区共享公共对等体发现资源的设备有意选择不同的时变传输模式。

公开(公告)号：US10098154B2

公开(公告)日：2018-10-09

申请号：US12832808

申请日：2010-07-08

申请人： Junyi Li ,  Xinzhou Wu ,  Sundar Subramanian ,  Nilesh Khude

发明人： Junyi Li ,  Xinzhou Wu ,  Sundar Subramanian ,  Nilesh Khude

IPC分类号： H04W74/08 ,  H04W76/11 ,  H04W76/02 ,  H04W84/18

摘要： A method of operating a wireless device includes selecting a connection identifier with a first node, receiving a scheduling control signal on a resource associated with the connection identifier, and determining a presence of a second node transmitting on the same resource associated with the connection identifier based on the received scheduling control signal.