公开(公告)号：US20130195082A1

公开(公告)日：2013-08-01

申请号：US13566660

申请日：2012-08-03

申请人： Xinzhou Wu ,  Sundar Subramanian ,  Shihuan Liu

发明人： Xinzhou Wu ,  Sundar Subramanian ,  Shihuan Liu

IPC分类号： H04W74/08

CPC分类号： H04W74/0808

摘要： A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be configured to determine a plurality of slots for transmitting information including a plurality of first type slots and a plurality of second type slots where the second type slots have a longer duration that the first type slots. The apparatus may be configured to transmit information in a first type slot when a previous reception was successful and there is no other transmission expected to occur during a gap preceding the first type slot and during the first type slot. Additionally or in the alternative, apparatus may be configured to transmit information in a second type slot when at least one of the previous reception was unsuccessful or there is another transmission expected to occur during a gap preceding the first type slot or during the first type slot.

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。 该装置可以被配置为确定用于发送包括多个第一类型时隙和多个第二类型时隙的信息的多个时隙，其中第二类型时隙具有第一类型时隙的较长持续时间。 该装置可以被配置为当先前接收成功并且在第一类型时隙之前的间隙期间和第一类型时隙期间没有预期发生其他传输时，在第一类型时隙中发送信息。 附加地或替代地，装置可以被配置为当前一次接收中的至少一个不成功时发送第二类型时隙中的信息，或者预期在第一类型时隙之前的间隙期间或在第一类型时隙期间发生另一个传输 。

公开(公告)号：US20130010774A1

公开(公告)日：2013-01-10

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： H04W28/00

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：US09198195B2

公开(公告)日：2015-11-24

申请号：US13566660

申请日：2012-08-03

申请人： Xinzhou Wu ,  Sundar Subramanian ,  Shihuan Liu

发明人： Xinzhou Wu ,  Sundar Subramanian ,  Shihuan Liu

IPC分类号： H04W74/08

CPC分类号： H04W74/0808

摘要： A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be configured to determine a plurality of slots for transmitting information including a plurality of first type slots and a plurality of second type slots where the second type slots have a longer duration that the first type slots. The apparatus may be configured to transmit information in a first type slot when a previous reception was successful and there is no other transmission expected to occur during a gap preceding the first type slot and during the first type slot. Additionally or in the alternative, apparatus may be configured to transmit information in a second type slot when at least one of the previous reception was unsuccessful or there is another transmission expected to occur during a gap preceding the first type slot or during the first type slot.

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。 该装置可以被配置为确定用于发送包括多个第一类型时隙和多个第二类型时隙的信息的多个时隙，其中第二类型时隙具有第一类型时隙的较长持续时间。 该装置可以被配置为当先前接收成功并且在第一类型时隙之前的间隙期间和第一类型时隙期间没有预期发生其他传输时，在第一类型时隙中发送信息。 附加地或替代地，装置可以被配置为当前一次接收中的至少一个不成功时发送第二类型时隙中的信息，或者预期在第一类型时隙之前的间隙期间或在第一类型时隙期间发生另一个传输 。

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：US09380620B2

公开(公告)日：2016-06-28

申请号：US13350396

申请日：2012-01-13

申请人： Siva Theja Maguluri ,  Sundar Subramanian ,  Xinzhou Wu

发明人： Siva Theja Maguluri ,  Sundar Subramanian ,  Xinzhou Wu

IPC分类号： H04W76/02 ,  H04W84/18

CPC分类号： H04W76/023 ,  H04W76/14 ,  H04W84/18

摘要： Wireless communications devices with existing peer to peer links transmit, e.g., in accordance with a recurring schedule, quality of service related information corresponding to the existing links. The transmitted quality of service related information is, e.g., information indicating an obtained quality of service for the existing link. In some embodiments, quality of service related information is communicated in one of: a peer discovery signal, a connection ID broadcast signal and a contention resolution signal. A wireless communications device seeking to establish a new peer to peer link receives quality of service related information corresponding to existing links and estimates a quality a service achievable on the new desired potential link based on the received quality of service related information. The wireless communications device decides whether or not to establish the new peer to peer link based on its quality of service estimate.

公开(公告)号：US09113492B2

公开(公告)日：2015-08-18

申请号：US13290312

申请日：2011-11-07

申请人： Siva Theja Maguluri ,  Xinzhou Wu ,  Sundar Subramanian

发明人： Siva Theja Maguluri ,  Xinzhou Wu ,  Sundar Subramanian

IPC分类号： H04W72/12 ,  H04W84/18 ,  H04W28/02

CPC分类号： H04W72/1247 ,  H04W28/021 ,  H04W72/1231 ,  H04W84/18

摘要： A method, computer program product, and an apparatus for a transmit priority distributed backoff are provided. The apparatus forms a peer-to-peer communication link with a second apparatus. In addition, the apparatus determines whether to transmit in an assigned resource for securing a transmit priority for transfer of data to the second apparatus based on a quality of service estimation. Furthermore, the apparatus transmits to the second apparatus based on the determination. A method, computer program product, and an apparatus for a transmit priority token passing are provided. The apparatus forms a peer-to-peer communication link with a second apparatus. In addition, the apparatus determines a transmit priority within the link based on a quality of service estimation. The transmit priority is a priority of transmission between the apparatus and the second apparatus in the link.

摘要翻译： 提供了一种方法，计算机程序产品和用于发送优先级分布式退避的装置。 该装置与第二装置形成对等通信链路。 此外，该装置基于服务质量估计，确定是否在所分配的资源中发送以确保用于将数据传送到第二装置的发送优先级。 此外，该装置基于该确定向第二装置发送。 提供了一种方法，计算机程序产品和用于发送优先令牌传递的装置。 该装置与第二装置形成对等通信链路。 此外，该装置基于服务质量估计来确定链路内的发送优先级。 发送优先级是链路中装置与第二装置之间的传输的优先级。

公开(公告)号：US09025466B2

公开(公告)日：2015-05-05

申请号：US13541984

申请日：2012-07-05

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： H04Q7/28 ,  H04W24/00 ,  H04B17/00 ,  H04L12/26 ,  H04J3/14

CPC分类号： H04W24/00 ,  H04J3/14 ,  H04L5/0064 ,  H04L43/50 ,  H04W74/0808 ,  H04W74/0816 ,  H04W84/18

摘要： A transmission initiation interval timing structure is used in combination with a lower layer timing structure, e.g., physical layer timing structure. A device selects a subset of packet transmission initiation intervals and then limits initiation of packet transmission to those intervals thereby reducing the potential for collisions. Packet transmission may occur outside the initiation interval in which the transmission is initiated. In some embodiments, packet transmission length is intentionally limited to sizes which can be transmitted in a fraction of the amount of time the physical layer allows a single device to continuously transmit, e.g., in an amount of time which is equal to or less than the duration of a packet transmission initiation interval. This increases the probability that multiple devices will be able to successfully transmit small packets at short intervals on a regular basis even when carrier sensing techniques are used.

摘要翻译： 传输启动间隔定时结构与较低层定时结构结合使用，例如物理层定时结构。 设备选择分组传输启动间隔的子集，然后限制分组传输的开始到那些间隔，从而减少冲突的可能性。 分组传输可能发生在传输启动的发起间隔之外。 在一些实施例中，分组传输长度被有意地限制为可以在物理层允许单个设备连续发送的时间量的一小部分中传输的大小，例如，等于或小于 分组传输启动间隔的持续时间。 这增加了即使在使用载波感测技术的情况下，多个设备将能够以短时间间隔成功地发送小分组的概率。

公开(公告)号：US20120014463A1

公开(公告)日：2012-01-19

申请号：US12835264

申请日：2010-07-13

申请人： Xinzhou Wu ,  Sundar Subramanian ,  Junyi Li

发明人： Xinzhou Wu ,  Sundar Subramanian ,  Junyi Li

IPC分类号： H04L27/28 ,  H04L27/00

CPC分类号： H04L5/003 ,  H04L5/00 ,  H04L5/0007 ,  H04L27/2601 ,  H04W72/1231

摘要： Methods and apparatus for determining, e.g., selecting, communications resources, e.g., tones, to use in a communications system are described. The methods are well suited for use in Orthogonal Frequency Division Multiplexing (OFDM) systems. Devices seeking to transmit information select tones in pairs for use in transmitting the information. Each tone pair includes a tone and the corresponding image tone. By restricting a communications device to select communications frequencies in pairs, the problem of interference and reduced dynamic range at a receiver due to IQ imbalance is reduced, as compared to the case where devices may use a tone independent of the corresponding image tone for transmission purposes, since the path loss from the transmitter to the receiver is likely to be the same for both tones and the transmission power level is controlled by an individual device using both of the tones.

摘要翻译： 描述了用于确定例如选择在通信系统中使用的通信资源，例如音调的方法和装置。 该方法非常适用于正交频分复用（OFDM）系统。 寻求发送信息的设备成对选择音调以用于发送信息。 每个音色对包括一个音调和相应的图像色调。 通过限制通信设备成对地选择通信频率，与设备可以使用独立于对应的图像色调的音调以用于传输目的的情况相比，由于IQ不平衡而导致的接收机处的干扰和减小的动态范围的问题减少了 由于从发射机到接收机的路径损耗对于两个音调都是相同的，并且发射功率电平由使用两个音调的单独设备控制。

公开(公告)号：US08995539B2

公开(公告)日：2015-03-31

申请号：US12835264

申请日：2010-07-13

申请人： Xinzhou Wu ,  Junyi Li ,  Sundar Subramanian

发明人： Xinzhou Wu ,  Junyi Li ,  Sundar Subramanian

IPC分类号： H04K1/10 ,  H04L5/00 ,  H04L27/26 ,  H04W72/12

CPC分类号： H04L5/003 ,  H04L5/00 ,  H04L5/0007 ,  H04L27/2601 ,  H04W72/1231

摘要： Methods and apparatus for determining, e.g., selecting, communications resources, e.g., tones, to use in a communications system are described. The methods are well suited for use in Orthogonal Frequency Division Multiplexing (OFDM) systems. Devices seeking to transmit information select tones in pairs for use in transmitting the information. Each tone pair includes a tone and the corresponding image tone. By restricting a communications device to select communications frequencies in pairs, the problem of interference and reduced dynamic range at a receiver due to IQ imbalance is reduced, as compared to the case where devices may use a tone independent of the corresponding image tone for transmission purposes, since the path loss from the transmitter to the receiver is likely to be the same for both tones and the transmission power level is controlled by an individual device using both of the tones.

摘要翻译： 描述了用于确定例如选择在通信系统中使用的通信资源，例如音调的方法和装置。 该方法非常适用于正交频分复用（OFDM）系统。 寻求发送信息的设备成对选择音调以用于发送信息。 每个音色对包括一个音调和相应的图像色调。 通过限制通信设备成对地选择通信频率，与设备可以使用独立于相应图像色调的音调以用于传输目的的情况相比，由于IQ不平衡而导致的接收机处的干扰和减小的动态范围的问题减少了 由于从发射机到接收机的路径损耗对于两个音调都是相同的，并且发射功率电平由使用两个音调的单独设备控制。

公开(公告)号：US08923910B2

公开(公告)日：2014-12-30

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 ,  H04W52/34 ,  H04W52/32 ,  H04W52/46

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。