公开(公告)号：US08169969B2

公开(公告)日：2012-05-01

申请号：US12141439

申请日：2008-06-18

Applicant: Ramanuja Vedantham ,  Sandeep Bhadra ,  Shantanu Kangude ,  Seung Baek

Inventor： Ramanuja Vedantham ,  Sandeep Bhadra ,  Shantanu Kangude ,  Seung Baek

IPC: H04W4/00

CPC classification number: H04W36/24 ,  H04W36/02

Abstract: This invention employs an inherent tradeoff in a radio bearer dependent data handling method for intra-E-UTRA handoffs. For user equipment using real time data, the source node forwards to the target node not yet acknowledged real time service data units and disconnects. This makes the handoff latency short at the expense of data traffic between nodes. For user equipment not needing real time data, the source node continues to receive user equipment acknowledgements during a time out period and only forwards service data units acknowledged during the time out period. This reduces X2 interface traffic between the source and target nodes but extends the handoff latency.

Abstract translation: 本发明在用于E-UTRA切换的无线载体相关数据处理方法中采用固有的权衡。 对于使用实时数据的用户设备，源节点向目标节点转发尚未确认的实时业务数据单元和断开连接。 这使得切换延迟短于节点之间的数据流量。 对于不需要实时数据的用户设备，源节点在超时期间继续接收用户设备确认，只转发在超时期间确认的业务数据单元。 这减少了源节点和目标节点之间的X2接口流量，但是扩展了切换延迟。

公开(公告)号：US20110317719A1

公开(公告)日：2011-12-29

申请号：US13223452

申请日：2011-09-01

Applicant: Ramanuja Vedantham ,  Shantanu Kangude ,  Harshal S. Chhaya

Inventor： Ramanuja Vedantham ,  Shantanu Kangude ,  Harshal S. Chhaya

IPC: H04W4/00

CPC classification number: H04W80/02 ,  H04L69/22 ,  H04L69/324 ,  H04W28/06

Abstract: A system for communicating protocol layer processing information is disclosed herein. A transmitter includes a protocol layer header generator that generators a header for a first protocol data unit. The header generator provides a first header comprising a first sequence number field that determines the order in which a receiving entity present the first data unit to higher protocol layer. The sequence number field varies in length. A receiver includes a protocol layer header parser that parses a header of a first protocol data unit. The header parser parses a first header comprising a first sequence number field that determines the order in which the first data unit is presented to a higher protocol layer. The sequence number field varies in length.

Abstract translation: 本文公开了一种用于传送协议层处理信息的系统。 发射机包括生成第一协议数据单元的报头的协议层报头发生器。 报头生成器提供包括第一序列号字段的第一报头，该第一序列号字段确定接收实体将第一数据单元呈现给较高协议层的顺序。 序列号字段长度不同。 接收机包括解析第一协议数据单元的报头的协议层报头解析器。 头部解析器解析包括第一序列号字段的第一标题，该第一序列号字段确定将第一数据单元呈现给较高协议层的顺序。 序列号字段长度不同。

公开(公告)号：US20110310826A1

公开(公告)日：2011-12-22

申请号：US13161082

申请日：2011-06-15

Applicant: YANJUN SUN ,  ARITON E. XHAFA ,  RAMANUJA VEDANTHAM ,  XIAOLIN LU

Inventor： YANJUN SUN ,  ARITON E. XHAFA ,  RAMANUJA VEDANTHAM ,  XIAOLIN LU

IPC: H04W72/04

CPC classification number: H04W72/00 ,  H04W72/04 ,  H04W72/12 ,  H04W72/1215 ,  H04W84/12 ,  H04W84/18 ,  H04W88/06

Abstract: A wireless combination device includes a first wireless transceiver configured for communication via a first wireless network over a first band, and a second wireless transceiver configured for communication via a second wireless network over a second band that overlaps the second band. The combination device includes a medium allocation scheduler coupled to the first wireless transceiver and second wireless transceiver for implementing spaced-mode operation that intentionally inserts idle gaps in transmissions via the second wireless network when triggered by the presence of at least one spaced-mode triggering condition. The idle gaps allow wireless transmissions via the first wireless network to be received by the combination device with higher probability, and without the need for clear to send (C2S) protection.

Abstract translation: 无线组合设备包括被配置用于经由第一频带经由第一无线网络进行通信的第一无线收发器和被配置用于经由与第二频带重叠的第二频带上的第二无线网络进行通信的第二无线收发器。 组合设备包括耦合到第一无线收发器的介质分配调度器和第二无线收发器，用于实现间隔模式操作，其在由至少一个间隔触发条件的存在触发时经由第二无线网络故意插入传输中的空闲间隙 。 空闲间隙允许经由第一无线网络的无线传输以更高的概率被组合设备接收，并且不需要清除发送（C2S）保护。

公开(公告)号：US20100067604A1

公开(公告)日：2010-03-18

申请号：US12561990

申请日：2009-09-17

Applicant: Sandeep Bhadra ,  Ramanuja Vedantham ,  Shantanu Kangude ,  Eko N. Onggosanusi ,  Anand G. Dabak ,  Badri N. Varadarajan ,  Runhua Chen ,  Tarkesh Pande

Inventor： Sandeep Bhadra ,  Ramanuja Vedantham ,  Shantanu Kangude ,  Eko N. Onggosanusi ,  Anand G. Dabak ,  Badri N. Varadarajan ,  Runhua Chen ,  Tarkesh Pande

IPC: H04B7/02

CPC classification number: H04B7/024

Abstract: A coordinated multipoint transmitter is for use with a multiple antenna super-cell and includes primary and secondary base stations jointly connected via an X2 interface link, wherein the primary base station provides a transmission directive corresponding to an X2 interface protocol over the X2 interface link to the secondary base station for a joint transmission from the primary and secondary base stations.

Abstract translation: 协调的多点发射机用于多天线超小区，并且包括通过X2接口链路共同连接的主基站和次基站，其中主基站通过X2接口链路提供对应于X2接口协议的传输指令， 用于从一级和二级基站的联合传输的二级基站。

公开(公告)号：US20090319850A1

公开(公告)日：2009-12-24

申请号：US12490587

申请日：2009-06-24

Applicant: Seung Baek ,  Ramanuja Vedantham

Inventor： Seung Baek ,  Ramanuja Vedantham

IPC: H04L1/08 ,  G06F11/14

CPC classification number: H04L1/1874

Abstract: A wireless communication device includes a transmit buffer and control logic coupled to the transmit buffer. The control logic selectively implements an “ACK2 scheme” that drops a data block in the transmit buffer based on reception of two consecutive HARQ ACKs associated with the data block.

Abstract translation: 无线通信设备包括发送缓冲器和耦合到发送缓冲器的控制逻辑。 控制逻辑选择性地实现基于与数据块相关联的两个连续HARQ ACK的接收而丢弃发送缓冲器中的数据块的“ACK2方案”。

公开(公告)号：US20090257377A1

公开(公告)日：2009-10-15

申请号：US12419498

申请日：2009-04-07

Applicant: Ramanuja Vedantham ,  Ariton E. Xhafa

Inventor： Ramanuja Vedantham ,  Ariton E. Xhafa

IPC: H04W88/02

CPC classification number: H04W28/14 ,  H04L1/1835 ,  H04L47/10 ,  H04L47/12 ,  H04L47/14 ,  H04L47/30 ,  H04L47/32

Abstract: A wireless communication device includes a receive buffer and control logic coupled to the receive buffer. The control logic implements an algorithm to selectively drop data blocks in the receive buffer once a predetermined fill threshold for the receive buffer is reached. The receive buffer is sized so that a drop activity level for the algorithm is within a predetermined range.

Abstract translation: 无线通信设备包括接收缓冲器和耦合到接收缓冲器的控制逻辑。 一旦达到接收缓冲器的预定填充阈值，控制逻辑就实现一种选择性地丢弃接收缓冲器中的数据块的算法。 接收缓冲器的大小使得算法的下降活动级别在预定范围内。

公开(公告)号：US09379773B2

公开(公告)日：2016-06-28

申请号：US13593159

申请日：2012-08-23

Applicant: Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Tarkesh Pande ,  Il Han Kim

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Tarkesh Pande ,  Il Han Kim

IPC: H04B3/54 ,  H04L12/26

CPC classification number: H04B3/54 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04B2203/542 ,  H04B2203/5466

Abstract: Phase detection between service nodes in a as “PRIME” (“PoweRline Intelligent Metering Evolution”) communications network, in which the service nodes are connected to one phase of a three-phase power distribution network. A service node joining a sub-network receives packet data units from other service nodes in the sub-network, including those that can potentially serve as a switch node to which the joining service node can register. The joining service node measures an elapsed time between a zero crossing of the AC power waveform at its phase and the start of a frame in the received packet data units. This elapsed time is compared with a similar zero crossing gap communicated by other service nodes in the packet data units, to identify the relative phases to which the two service nodes are connected.

Abstract translation: 在“PRIME”（“PoweRline Intelligent Metering Evolution”）通信网络中的服务节点之间的相位检测，其中服务节点连接到三相配电网络的一相。 加入子网络的服务节点从子网络中的其他服务节点接收分组数据单元，包括可能充当加入服务节点可以注册的交换节点的那些节点。 加入服务节点测量在其相位处的AC功率波形的过零点与接收的分组数据单元中的帧的开始之间的经过时间。 将经过的时间与由分组数据单元中的其他服务节点通信的类似的零交叉间隔进行比较，以识别两个服务节点所连接的相对阶段。

公开(公告)号：US08995437B2

公开(公告)日：2015-03-31

申请号：US13415597

申请日：2012-03-08

Applicant: Kumaran Vijayasankar ,  Ramanuja Vedantham

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham

IPC: H04L12/40 ,  H04L12/413 ,  H04L1/16

CPC classification number: H04L12/413 ,  H04B3/542 ,  H04B3/544 ,  H04B2203/5408 ,  H04B2203/5454 ,  H04L1/0041 ,  H04L1/0065 ,  H04L1/0067 ,  H04L1/08 ,  H04L1/1671 ,  H04L1/18 ,  H04L5/0044 ,  H04L5/0094 ,  H04L27/2601 ,  H04L27/2646

Abstract: Segmented frames of data may be transmitted from a transmitting device using conflict free slots (CFS) within a carrier sense multiple access with collision avoidance (CSMA/CA) protocol on a noisy media. At a receiver, a segmented frame of data is received. The data is represented by a plurality of tones. If requested by the transmitter, a tone map response command is prepared that specifies a set of optimized tone map parameters by analyzing the received frame of data. Any previously determined tone map response commands to the transmitting device are deleted. A sequence of frame segments may be received in conflict free slots, but only one tone map response is transmitted to the transmitting device after receiving the entire sequence of frame segments.

Abstract translation: 数据帧可以在具有冲突避免（CSMA / CA）协议的载波侦听多路访问中使用无冲突时隙（CFS）从发送设备发送。 在接收机处，接收分段的数据帧。 数据由多个音调表示。 如果由发射机请求，则通过分析接收的数据帧来准备一个音调映射响应命令，该命令指定一组优化的音调映射参数。 任何先前确定的发送设备的音调映射响应命令被删除。 可以在无冲突时隙中接收帧序列，但是在接收到整个帧段序列之后，只有一个音调映射响应被发送到发送设备。

公开(公告)号：US08787195B2

公开(公告)日：2014-07-22

申请号：US13531324

申请日：2012-06-22

Applicant: Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Robert Liang ,  Susan Yim ,  Xiaolin Lu

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Robert Liang ,  Susan Yim ,  Xiaolin Lu

IPC: H04L12/26

CPC classification number: H04B3/542 ,  H04L5/0007 ,  H04L25/0264

Abstract: Systems and methods for beacon selection in communication networks are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include performing, using a terminal device deployed in a communications network, receiving a beacon transmitted by a switch device within the communications network and, in response to the terminal device having had a previous connection with the switch device, determining a connection time of the previous connection. The method may also include performing at least one of: adding the switch device to a blacklist in response to the connection time being smaller than a first threshold value, or selecting the switch device for subsequent communication in response to the connection time being greater than a second threshold value.

Abstract translation: 描述了通信网络中信标选择的系统和方法。 在各种实现中，这些系统和方法可以适用于电力线通信（PLC）。 例如，一种方法可以包括使用部署在通信网络中的终端设备来接收由通信网络内的交换设备发送的信标，并且响应于终端设备已经与交换设备之前的连接，确定 上一次连接的连接时间。 该方法还可以包括执行以下至少之一：响应于小于第一阈值的连接时间将交换设备添加到黑名单中，或者响应于连接时间大于第一阈值来选择交换设备进行后续通信 第二阈值。

公开(公告)号：US20130049939A1

公开(公告)日：2013-02-28

申请号：US13593428

申请日：2012-08-23

Applicant: Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Anand G. Dabak

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Anand G. Dabak

IPC: G08C19/12

CPC classification number: H04L12/413 ,  H04B3/54 ,  H04B3/542 ,  H04B2203/5408 ,  H04B2203/5433 ,  H04L69/02

Abstract: Systems and methods for enhanced carrier sense multiple access (CSMA) protocols are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include attempting to access a communications channel to transmit a frame after a backoff time proportional to a randomly generated number within a contention window (CW), the CW having an initial value carried over from a previous transmission of a different frame. Additionally or alternatively, some of techniques described herein may facilitate the spreading of the time over which devices attempt to transmit packets, thereby reducing the probability of collisions using, for example, Additive Decrease Multiplicative Increase (ADMI) mechanisms.