公开(公告)号：US07283502B1

公开(公告)日：2007-10-16

申请号：US09666809

申请日：2000-09-21

申请人： Santosh P Abraham ,  Mooi Choo Chuah ,  Kameswara Rao Medapalli ,  Ashwin Sampath

发明人： Santosh P Abraham ,  Mooi Choo Chuah ,  Kameswara Rao Medapalli ,  Ashwin Sampath

IPC分类号： H04L12/56 ,  H04L29/06

CPC分类号： H04W72/0406 ,  H04L47/10 ,  H04L47/2433 ,  H04L47/2491 ,  H04L69/16 ,  H04L69/161 ,  H04L69/324 ,  H04W72/087 ,  H04W92/12

摘要： In a UMTS (universal mobile telecommunications system) Terrestrial Radio Access Network (UTRAN) based wireless system, a wireless network element (e.g., a base station) exchanges information with another wireless network element (e.g., a radio network controller) via data frames (uplink or downlink). Each data frame comprising a header portion and a payload portion, which comprises a QoS class indicator field. Illustratively, the eight bit spare extension field of a UTRAN data frame (uplink or downlink) is used to convey a four bit payload type indicator and a four bit QoS class indicator.

摘要翻译： 在基于陆地无线电接入网（UMTS）的UMTS（通用移动电信系统）无线系统中，无线网元（例如，基站）经由数据帧（例如，无线网络控制器）与另一无线网元 上行链路或下行链路）。 每个数据帧包括报头部分和有效载荷部分，其包括QoS类指示符字段。 说明性地，UTRAN数据帧（上行链路或下行链路）的八位备用扩展字段用于传送四位有效载荷类型指示符和四位QoS类别指示符。

公开(公告)号：US07031254B2

公开(公告)日：2006-04-18

申请号：US10057449

申请日：2002-01-25

申请人： Santosh P Abraham ,  Mooi Choo Chuah ,  Ashwin Sampath ,  Cem Uygur Saraydar

发明人： Santosh P Abraham ,  Mooi Choo Chuah ,  Ashwin Sampath ,  Cem Uygur Saraydar

IPC分类号： H04L12/26

CPC分类号： H04W28/22 ,  H04W28/10 ,  H04W92/14

摘要： A rate control system is provided for a link between a first node, such as an RNC and a second node, such as a Node B, within a wireless communications system where at least one user is provided a rate over the link as a function of link load. For example, the rate control system sets at least one user to a reduced rate on the link as a function of the rates of a plurality of users on the link. In certain embodiments, the rate control system controls the rate by selecting the size of a transport format block used to transport data for a user over the link during a transmission interval. The size of the transport format block can be selected by changing the number of transport blocks used to form the transport format block as a function of the total user data to be transported over the link at that time. The rate of data offered to the link can be controlled by the way user data is mapped into the transport format blocks used to send user data over the link. In a current UMTS systems, as long as the data present in a particular RLC buffer exceeds the size of the largest TFB, the largest TFB is used to pass the data to the next layer. With the rate control system, the size of the TFB for a particular user is determined based on the current status of all the RLC buffers that have data to transmit. If there is more data than the Iub link can carry at that point in time, then smaller TFBs are used for some of the users such that the aggregate traffic offered remains below the sustainable rate.

公开(公告)号：US07023884B2

公开(公告)日：2006-04-04

申请号：US09740252

申请日：2000-12-19

申请人： Mooi Choo Chuah ,  Daniel R. Jeske ,  Muralidhran S. Kodialam ,  Ashwin Sampath ,  Anlu Yan ,  On-Ching Yue

发明人： Mooi Choo Chuah ,  Daniel R. Jeske ,  Muralidhran S. Kodialam ,  Ashwin Sampath ,  Anlu Yan ,  On-Ching Yue

IPC分类号： H04J3/06

CPC分类号： H04J3/0667 ,  G06F1/14

摘要： A new algorithm for clock offset estimation for resources distributed across a network (such as the Internet). By exchanging a sequence of time-stamped messages between pairs of network nodes and separately estimating variable delays for each message direction, present inventive embodiments provide estimates for clock offset between node pairs and the bias of such estimates, thereby to permit more accurate correction. Present inventive algorithms operate in a variety of peer and server network configurations while providing significant improvement in convergence speed and accuracy.

公开(公告)号：US09844073B2

公开(公告)日：2017-12-12

申请号：US12987946

申请日：2011-01-10

申请人： Siddharth Ray ,  Ashwin Sampath ,  Ritesh Kumar Madan

发明人： Siddharth Ray ,  Ashwin Sampath ,  Ritesh Kumar Madan

IPC分类号： H04W74/00

CPC分类号： H04W74/006 ,  H04W74/008

摘要： Methods and apparatus for contention-based access in a wireless communication system are disclosed. A base station may determine a contention-based resource allocation comprising a subset of available system resources. Information related to the contention-based resources may be sent to a user device. In addition, state information may be provided to the UE. The UE may generate and send a contention-based uplink transmission consistent with the allocated resources and state information.

公开(公告)号：US09584281B2

公开(公告)日：2017-02-28

申请号：US13343571

申请日：2012-01-04

申请人： Saurabh Tavildar ,  Ashwin Sampath

发明人： Saurabh Tavildar ,  Ashwin Sampath

IPC分类号： H04L5/00 ,  H04W92/18

CPC分类号： H04L5/0053 ,  H04L5/0007 ,  H04W92/18

摘要： Methods and apparatus for communicating short messages from a first device, e.g., a femto cell device or peer to peer device, over communications resources which are being used by an OFDM macro network, e.g., cellular network, are described. The signal goes on top of, e.g., is transmitted on the same communications resource(s), on which a macro signal, e.g. a downlink signal from a cellular base station, is transmitted. Since the signals are transmitted on the same resources as the signals from the macro base station, they interfere with the macro signal. However, the signals transmitted by the femto cell devices and/or peer to peer devices are designed so that they cause little interference to the macro base station in terms of overall throughput and/or with the macro base station's ability to communicate control and/or pilot information.

摘要翻译： 描述了通过OFDM宏网络例如蜂窝网络正在使用的通信资源来从第一设备（例如，毫微微小区设备或对等设备）传送短消息的方法和设备。 该信号位于例如在相同的通信资源上，例如在其上传送宏信号的信号。 来自蜂窝基站的下行链路信号被发送。 由于信号以与来自宏基站的信号相同的资源发送，所以它们干扰宏信号。 然而，由毫微微小区设备和/或对等设备发送的信号被设计成使得它们在总吞吐量方面和/或与宏基站传送控制和/或 飞行员资料。

公开(公告)号：US08918112B2

公开(公告)日：2014-12-23

申请号：US12260861

申请日：2008-10-29

申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Ravi Palanki ,  Ashwin Sampath ,  Avneesh Agrawal

发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Naga Bhushan ,  Ravi Palanki ,  Ashwin Sampath ,  Avneesh Agrawal

IPC分类号： H04W72/00 ,  H04W48/08 ,  H04W8/26 ,  H04W36/30 ,  H04W48/16

CPC分类号： H04W48/08 ,  H04W8/26 ,  H04W36/30 ,  H04W48/16

摘要： Providing for management of wireless communications in a heterogeneous wireless access point (AP) environment is described herein. By way of example, system data of an over-the-air message can be configured to include information identifying a distinct type of transmitting base station. In some aspects, the information can include an access type of the base station and/or a sector ID for distinguishing the base station among large numbers of other base stations. According to other aspects, the information can include wireless channel resources designated for a particular type of base station, or blanked by the transmitting base station, to facilitate interference reduction on such resources. By employing aspects of wireless communication management disclosed herein, efficient and reliable communication can be affected in large heterogeneous AP networks.

摘要翻译： 本文描述了在异构无线接入点（AP）环境中的无线通信的管理。 作为示例，空中消息的系统数据可以被配置为包括标识不同类型的发送基站的信息。 在一些方面，信息可以包括基站的接入类型和/或用于区分大量其他基站中的基站的扇区ID。 根据其他方面，信息可以包括为特定类型的基站指定的无线信道资源，或者由发射基站消隐，以便于对这些资源进行干扰减少。 通过采用这里公开的无线通信管理的方面，可以在大型异构AP网络中影响高效可靠的通信。

公开(公告)号：US08825046B2

公开(公告)日：2014-09-02

申请号：US12261998

申请日：2008-10-30

申请人： Mohammad J. Borran ,  Aamod Khandekar ,  Naga Bhushan ,  Ashwin Sampath ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Ravi Palanki ,  Gavin B. Horn

发明人： Mohammad J. Borran ,  Aamod Khandekar ,  Naga Bhushan ,  Ashwin Sampath ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Ravi Palanki ,  Gavin B. Horn

IPC分类号： H04W4/00 ,  H04B7/00

CPC分类号： H04W72/048 ,  H04W52/242 ,  H04W52/243 ,  H04W52/28 ,  H04W52/325 ,  H04W52/34

摘要： Techniques for transmitting data with short-term interference mitigation in a wireless communication system are described. In one design, a serving base station may send a message to a terminal to trigger short-term interference mitigation. In response, the terminal may send a message to request at least one interfering base station to reduce interference on at least one resource. Each interfering base station may determine a transmit power level to be used for the at least one resource and may send a pilot at this transmit power level. The terminal may estimate the channel quality of the at least one resource based on at least one pilot received from the at least one interfering base station. The terminal may send information indicative of the estimated channel quality to the serving base station. The serving base station may send a data transmission on the at least one resource to the terminal.

摘要翻译： 描述了在无线通信系统中发送具有短期干扰抑制的数据的技术。 在一种设计中，服务基站可以向终端发送消息以触发短期干扰减轻。 作为响应，终端可以发送消息以请求至少一个干扰基站以减少对至少一个资源的干扰。 每个干扰基站可以确定要用于至少一个资源的发射功率电平，并且可以以该发射功率电平发送导频。 终端可以基于从至少一个干扰基站接收的至少一个导频来估计至少一个资源的信道质量。 终端可以向服务基站发送表示估计的信道质量的信息。 服务基站可以向终端发送至少一个资源上的数据传输。

公开(公告)号：US08787908B2

公开(公告)日：2014-07-22

申请号：US13290325

申请日：2011-11-07

申请人： Saurabh Tavildar ,  Ashwin Sampath

发明人： Saurabh Tavildar ,  Ashwin Sampath

IPC分类号： H04B7/212 ,  H04J3/06 ,  H04B7/00 ,  H04W48/12 ,  H04W56/00 ,  H04W84/04

CPC分类号： H04W48/12 ,  H04W56/00 ,  H04W84/045

摘要： A method, a computer program product, and an apparatus are provided in which the apparatus (e.g., a femto cell) receives timing information from a second apparatus (e.g., a macro cell). The apparatus receives a signal from a third apparatus (e.g., a UE) based on the received timing information. The apparatus transmits a broadcast signal based on the received signal. A method, a computer program product, and an apparatus are provided in which the apparatus (e.g., a UE) receives timing information from a second apparatus (e.g., macro cell). The apparatus transmits a signal to a third apparatus (e.g., a femto cell) based on the received timing information. The apparatus receives a broadcast signal from the third apparatus in response to the signal.

摘要翻译： 提供了一种方法，计算机程序产品和装置，其中装置（例如，毫微微小区）从第二装置（例如，宏小区）接收定时信息。 该装置基于接收到的定时信息从第三装置（例如，UE）接收信号。 该装置基于接收到的信号发送广播信号。 提供了一种方法，计算机程序产品和装置，其中装置（例如，UE）从第二装置（例如，宏小区）接收定时信息。 该装置基于接收到的定时信息向第三装置（例如，毫微微小区）发送信号。 该装置响应于该信号从第三装置接收广播信号。

公开(公告)号：US08743905B2

公开(公告)日：2014-06-03

申请号：US12643713

申请日：2009-12-21

申请人： Siddharth Ray ,  Ashwin Sampath ,  Peter A. Barany

发明人： Siddharth Ray ,  Ashwin Sampath ,  Peter A. Barany

IPC分类号： H04J3/24

CPC分类号： H04W28/065 ,  H04L63/0428 ,  H04W12/02 ,  H04W80/02

摘要： Techniques for bundling and ciphering data prior to transmission are described. In an exemplary design, a transmitting entity receives a plurality of service data units (SDUs) from an upper layer, assigns sequential sequence numbers to the SDUs, and bundles the SDUs into a single protocol data unit (PDU). In one design, the transmitting entity generates a single count value based on a sequence number of a designated SDU (e.g., the first SDU) in the PDU and ciphers all SDUs based on the single count value. In another design, the transmitting entity ciphers each segment of at least two SDUs in the PDU based on a count value for that segment. The transmitting entity generates a header with at least one sequence number and possibly length and/or other information for the SDUs. The transmitting entity forms the PDU with the header and the SDUs and passes the PDU to a lower layer.

摘要翻译： 描述在传输之前捆绑和加密数据的技术。 在示例性设计中，发送实体从上层接收多个服务数据单元（SDU），向SDU分配顺序序列号，并将SDU捆绑成单个协议数据单元（PDU）。 在一种设计中，发送实体基于PDU中的指定SDU（例如，第一SDU）的序列号生成单个计数值，并且基于单个计数值对所有SDU进行加密。 在另一种设计中，发送实体基于该段的计数值对PDU中的至少两个SDU的每个段进行加密。 发送实体生成具有SDU的至少一个序列号和可能的长度和/或其他信息的报头。 发送实体与报头和SDU形成PDU，并将PDU传递给下层。

公开(公告)号：US08737373B2

公开(公告)日：2014-05-27

申请号：US12437036

申请日：2009-05-07

申请人： Ashwin Sampath ,  Gavin Horn ,  Husheng Li

发明人： Ashwin Sampath ,  Gavin Horn ,  Husheng Li

IPC分类号： H04H20/67 ,  H04J11/00

CPC分类号： H04W72/0473 ,  H04H40/00 ,  H04H2201/40 ,  H04W52/243 ,  H04W52/322 ,  H04W72/005

摘要： Aspects describe conveying unicast information and broadcast information in a resource set for a transmission request. The unicast information and broadcast information can be transmitted at substantially the same time. Power control can be applied separately to the unicast information and the broadcast information for reliable decoding. A null request can be indicated by “00” bits in a unicast portion and a zero power level in the broadcast portion.

摘要翻译： 方面描述在用于传输请求的资源集中传送单播信息和广播信息。 可以基本上同时发送单播信息和广播信息。 功率控制可以单独应用于单播信息和广播信息，以进行可靠的解码。 可以通过广播部分中的单播部分中的“00”比特和零功率电平来指示空请求。