公开(公告)号：USRE44244E1

公开(公告)日：2013-05-28

申请号：US12816928

申请日：2010-06-16

Applicant: Subir Varma ,  Reza Majidi-Ahy ,  Joseph Hakim ,  Wendy Chiu Fai Wong

Inventor： Subir Varma ,  Reza Majidi-Ahy ,  Joseph Hakim ,  Wendy Chiu Fai Wong

IPC: H04L27/00 ,  H04L1/00 ,  H04B17/00

CPC classification number: H04L1/0002 ,  H04B17/309 ,  H04B17/336 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/002 ,  H04L1/0034 ,  H04L1/16 ,  H04L1/1867 ,  Y02D50/10

Abstract: A system that adapts wireless link parameters for a wireless communication link. A measure is determined of errors occurring in communication over a wireless link. In a case that the measure of errors corresponds to more errors than a first predetermined threshold, communication changes from a first set of wireless link parameters to a second set of wireless link parameters. The second set of wireless link parameters corresponds to higher error tolerance than the first set of wireless link parameters. In a case that the measure of errors corresponds to fewer errors than a second predetermined threshold, communication changes from the first set of wireless link parameters to a third set of wireless link parameters. The third set of wireless link parameters corresponds to lower error tolerance than the first set of wireless link parameters. Preferably, the measure of errors is determined by monitoring a number of NACK messages and a number of ACK messages that occur. It is determined that the measure of errors corresponds to more errors than the first predetermined threshold when more than a predetermined number of NACK messages occur in succession. It is determined that the measure of errors corresponds to fewer errors than the second predetermined threshold when more than a predetermined number of ACK messages occur in succession.

公开(公告)号：US08295235B2

公开(公告)日：2012-10-23

申请号：US12403542

申请日：2009-03-13

Applicant: Subir Varma ,  Saied Kazeminejad

Inventor： Subir Varma ,  Saied Kazeminejad

IPC: H04W4/00

CPC classification number: H04W72/0486

Abstract: A method of operating a communication system is disclosed. A first set of wireless devices is communicated with using a first frequency range. A second set of wireless devices is communicated with using a second frequency range. A first air-interface utilization associated with the first frequency range is determined. The first air-interface utilization is determined to satisfy a criteria. A second air-interface utilization associated with the second frequency range is determined. A subset of the first set of wireless devices is selected. The subset is selected to have a total air interface utilization that exceeds one-half of the difference between the first air-interface utilization and the second air-interface utilization. The subset of wireless devices is controlled to use the second frequency range.

Abstract translation: 公开了一种操作通信系统的方法。 使用第一频率范围来传送第一组无线设备。 使用第二频率范围来传送第二组无线设备。 确定与第一频率范围相关联的第一空中接口利用。 确定第一空中接口利用率以满足标准。 确定与第二频率范围相关联的第二空中接口利用。 选择第一组无线设备的子集。 该子集被选择为具有超过第一空中接口利用率和第二空中接口利用率之差的一半的总空中接口利用率。 控制无线设备的子集以使用第二频率范围。

公开(公告)号：US20070206544A1

公开(公告)日：2007-09-06

申请号：US11703065

申请日：2007-02-06

Applicant: Subir Varma

Inventor： Subir Varma

IPC: H04B7/212

CPC classification number: H04W16/04 ,  H04J3/1694 ,  H04L12/18 ,  H04W28/04 ,  H04W72/0413 ,  H04W72/0446 ,  H04W72/1284 ,  H04W72/14 ,  H04W74/02 ,  H04W74/06 ,  H04W74/0833

Abstract: A system for controlling a contention state for a communication link between a base station controller and customer premises equipment in point-to-multipoint communication. The contention state is controlled using a state machine, which includes a grant pending absent state in which a unicast request slot is maintained open for use by the customer premises equipment. During the grant pending absent state, the customer premises equipment sends no upstream data to the base station controller but can use the unicast request slot to request a data slot for sending upstream data to the base station controller. In the grant pending state, the customer premises equipment preferably uses piggybacking to request grant of a next data slot while sending upstream data to the base station controller.

Abstract translation: 一种用于在点对多点通信中控制基站控制器和客户驻地设备之间的通信链路的争用状态的系统。 使用状态机来控制竞争状态，该状态机包括待保持状态，其中单播请求时隙保持打开以供客户驻地设备使用。 在待机待命状态期间，客户驻地设备不向基站控制器发送上行数据，但可以使用单播请求时隙来请求向基站控制器发送上行数据的数据时隙。 在授权等待状态下，客户端设备优选地使用捎带来向基站控制器发送上行数据来请求下一个数据时隙的授权。

公开(公告)号：US07212501B1

公开(公告)日：2007-05-01

申请号：US10990332

申请日：2004-11-16

Applicant: Subir Varma

Inventor： Subir Varma

IPC: H04B7/005

CPC classification number: H04L1/0025 ,  H04L1/0007 ,  H04L1/0009 ,  H04W28/18 ,  H04W88/12

Abstract: The invention provides a method and system for dynamically controlling link parameters during communication between one or more receiver/transmitters. Transmissions are sent as frames from a Base Station Controller to one or more Customer Premises Equipment. Together with a payload, each frame contains a special control message that pre-announces to both the transmitter and receiver the link parameters to be used until changed. The receiving Customer Premises Equipment processes the link parameters and returns a payload of its own within the same frame. With this dynamic approach, link parameters may be changed as often as every frame.

Abstract translation: 本发明提供了一种用于在一个或多个接收器/发射器之间的通信期间动态地控制链路参数的方法和系统。 传输作为帧从基站控制器发送到一个或多个客户驻地设备。 与有效载荷一起，每个帧包含一个特殊的控制消息，其预先向发射机和接收机通知要使用的链路参数直到改变。 接收的客户驻地设备处理链路参数，并在同一帧内返回自己的有效载荷。 通过这种动态方法，链路参数可以像每一帧一样频繁地改变。

公开(公告)号：US07173921B1

公开(公告)日：2007-02-06

申请号：US09689243

申请日：2000-10-11

Applicant: Subir Varma

Inventor： Subir Varma

IPC: H04J3/00

CPC classification number: H04W16/04 ,  H04J3/1694 ,  H04L12/18 ,  H04W28/04 ,  H04W72/0413 ,  H04W72/0446 ,  H04W72/1284 ,  H04W72/14 ,  H04W74/02 ,  H04W74/06 ,  H04W74/0833

Abstract: A system for controlling a contention state for a communication link between a base station controller and customer premises equipment in point-to-multipoint communication. The contention state is controlled using a state machine. The state machine includes a grant pending absent state in which a unicast request slot is maintained open for use by the customer premises equipment. During the grant pending absent state, the customer premises equipment sends no upstream data to the base station controller but can use the unicast request slot to request a data slot for sending upstream data to the base station controller. Preferably, the state machine further includes an idle state in which the customer premises equipment awaits arrival of data packets to send as upstream data to the base station controller. The state machine preferably further includes a deferring state in which the customer premises equipment defers contending for the data slot so as to avoid collisions with other customer premises equipment. The state machine also preferably includes a grant pending state in which the customer premises equipment awaits and receives grant of the data slot for sending upstream data to the base station controller and sends upstream data to the base station controller after grant of the data slot. In the grant pending state, the customer premises equipment preferably uses piggybacking to request grant of a next data slot while sending upstream data to the base station controller.

Abstract translation: 一种用于在点对多点通信中控制基站控制器和客户驻地设备之间的通信链路的争用状态的系统。 使用状态机控制争用状态。 状态机包括许可待决状态，其中单播请求时隙保持打开供客户驻地设备使用。 在待机待命状态期间，客户驻地设备不向基站控制器发送上行数据，但可以使用单播请求时隙来请求向基站控制器发送上行数据的数据时隙。 优选地，状态机还包括空闲状态，其中客户驻地设备等待数据分组的到达作为上行数据发送到基站控制器。 状态机优选地还包括延迟状态，在该延迟状态中，客户驻地设备延续竞争数据时隙，以避免与其他客户驻地设备的冲突。 状态机还优选地包括待处理状态，其中客户驻地设备等待并接收用于向基站控制器发送上行数据的数据时隙的授权，并在授予数据时隙之后将上行数据发送到基站控制器。 在授权等待状态下，客户端设备优选地使用捎带来向基站控制器发送上行数据来请求下一个数据时隙的授权。

公开(公告)号：US07139251B1

公开(公告)日：2006-11-21

申请号：US10120209

申请日：2002-04-09

Applicant: Subir Varma

Inventor： Subir Varma

IPC: H04J3/00 ,  H04J3/16 ,  H04Q7/20

CPC classification number: H04L69/14 ,  H04L47/10 ,  H04L47/14 ,  H04L47/2433 ,  H04L47/50 ,  H04L47/522 ,  H04L47/527 ,  H04L47/566 ,  H04W72/1205 ,  H04W72/1242

Abstract: The invention provides a method and system for scheduling for links having changing parameters. The method and system for scheduling for links having changing parameters is responsive to variations in communication capacity of communication links, such as wireless communication links in a wireless communication system. A BSC communicates with a plurality of CPE, including dynamically varying communication parameters for each CPE and substantially simultaneously scheduling traffic for each such CPE in response to those varying communication parameters. The BSC can schedule communication with each individual CPE in response to both (1) requested communication bandwidth and (2) varying communication capacity of the communication link between the BSC and that individual CPE. In a preferred embodiment, the BSC communicates with each CPE during a TDD frame. Sequences of such frames can each have differing communication parameters and can each be separately processed by the scheduling technique.

Abstract translation: 本发明提供了一种用于对具有变化参数的链路进行调度的方法和系统。 用于对具有变化参数的链路进行调度的方法和系统响应诸如无线通信系统中的无线通信链路的通信链路的通信容量的变化。 BSC与多个CPE进行通信，包括响应于那些变化的通信参数，针对每个CPE动态地改变通信参数并且基本上同时为每个这样的CPE调度业务。 BSC可以响应于（1）请求的通信带宽和（2）改变BSC和该单独CPE之间的通信链路的通信容量来调度与每个单独CPE的通信。 在优选实施例中，BSC在TDD帧期间与每个CPE进行通信。 这些帧的序列可以各自具有不同的通信参数，并且每个都可以通过调度技术单独处理。

公开(公告)号：US06373846B1

公开(公告)日：2002-04-16

申请号：US09036966

申请日：1998-03-09

Applicant: Thomas Daniel ,  Dieter Nattkemper ,  Subir Varma

Inventor： Thomas Daniel ,  Dieter Nattkemper ,  Subir Varma

IPC: H04L1256

CPC classification number: H04Q11/0478 ,  H04L2012/5616 ,  H04L2012/5652

Abstract: An asynchronous transfer mode (ATM) digital electronic communication system includes an ATM communication system interconnection and termination unit (ATMCSI/TU). This ATMCSI/TU includes both a programmable microprocessor and several hardware-implemented coprocessors. The hardware-implemented coprocessors are under control of the microprocessor, and are dedicated to the performing of repetitive tasks. Thus, the microprocessor is freed to perform supervisory tasks in the ATM in addition to performing tasks associated with actual communication of digital data packages (i.e., CS-PDU's) in the ATM system. Thus, the APU is freed from doing respective data manipulation tasks, while these tasks are performed by one or more hardware-implemented coprocessors using memory mapped data structures and linked lists of data.

Abstract translation: 异步传输模式（ATM）数字电子通信系统包括ATM通信系统互连和终端单元（ATMCSI / TU）。 该ATMCSI / TU包括可编程微处理器和几个硬件实现的协处理器。 硬件实现的协处理器在微处理器的控制下，专用于执行重复任务。 因此，除了执行与ATM系统中的数字数据包（即，CS-PDU）的实际通信相关联的任务之外，微处理器被释放以执行ATM中的监督任务。 因此，APU被免除执行相应的数据操作任务，而这些任务由使用存储器映射的数据结构和链接的数据列表的一个或多个硬件实现的协处理器执行。

公开(公告)号：US5831980A

公开(公告)日：1998-11-03

申请号：US710207

申请日：1996-09-13

Applicant: Subir Varma ,  Thomas Daniel

Inventor： Subir Varma ,  Thomas Daniel

IPC: H04L12/56 ,  H04Q11/04 ,  H04J3/24

CPC classification number: H04L12/5601 ,  H04L49/108 ,  H04L49/1553 ,  H04L49/203 ,  H04Q11/0478 ,  H04L2012/5651 ,  H04L2012/5679 ,  H04L2012/5681

Abstract: A shared memory fabric architecture for asynchronous transfer mode (ATM) switches including a multi-dimensional array of electrically interconnected N*M switch modules, where N>>M. The fabric architecture also includes input ports for providing cells to the array of switch modules. The input ports operate at a predetermined speed S. The fabric architecture additionally includes memory devices electrically connected to the array to provide a hierarchical memory structure at each switch module. The memory devices include on-chip, high-speed memory devices operating at a high-speed memory speed of N*S and off-chip, low-speed memory devices operating at a low-speed memory speed of (Y+M)*S, where Y

Abstract translation: 一种用于异步传输模式（ATM）交换机的共享存储器架构架构，其包括电互连N * M开关模块的多维阵列，其中N >> M。 结构体系结构还包括用于向交换机模块阵列提供小区的输入端口。 输入端口以预定速度S工作。该结构架构另外包括电连接到阵列的存储器件，以在每个开关模块处提供分层存储器结构。 存储器件包括以N * S的高速存储器速度工作的片上高速存储器件和以（Y + M）*的低速存储器速度工作的片外低速存储器件， S，其中Y << N。

公开(公告)号：US5796719A

公开(公告)日：1998-08-18

申请号：US659458

申请日：1996-06-06

Applicant: Vinod Gerard John Peris ,  Leonidas Georgiadis ,  Roch Andre Guerin ,  Subir Varma

Inventor： Vinod Gerard John Peris ,  Leonidas Georgiadis ,  Roch Andre Guerin ,  Subir Varma

IPC: H04L12/56 ,  H04Q11/04

CPC classification number: H04L12/5602 ,  H04Q11/0478 ,  H04L2012/5637 ,  H04L2012/5649 ,  H04L2012/5679 ,  H04L2012/568

Abstract: The present invention relates to the issue of providing end-to-end delay guarantees in a multi-node communication system. More specifically, the present invention addresses the problem of specifying operational parameters of rate-controlled service disciplines in a communication network in order to efficiently provide end-to-end delay guarantees. The key contribution is a method for specifying leaky bucket parameters as well as scheduling delays at each node, which are used as inputs to the rate-controlled service discipline.

Abstract translation: 本发明涉及在多节点通信系统中提供端到端延迟保证的问题。 更具体地，本发明解决了在通信网络中指定速率控制的服务规则的操作参数的问题，以便有效地提供端到端延迟保证。 关键贡献是一种指定漏斗参数以及每个节点的调度延迟的方法，它们被用作速率控制服务规则的输入。

公开(公告)号：US08588855B1

公开(公告)日：2013-11-19

申请号：US13435031

申请日：2012-03-30

Applicant: Subir Varma ,  Durga Prasad Satapathy

Inventor： Subir Varma ,  Durga Prasad Satapathy

IPC: H04M1/00

CPC classification number: H04L1/0625

Abstract: A wireless communication device is operated in a M by N multiple-input multiple-output (MIMO) mode. M is the number of antennas transmitting to the communication device from a first base station. N the number of receiving antennas and receivers. M and N are integers greater than one. The wireless communication device is operated in an M by N−1 MIMO mode while a first one of the N receiving antennas and a first one of the N receivers receives wireless communication from a second base station.

Abstract translation: 无线通信设备以M×N多输入多输出（MIMO）模式工作。 M是从第一基站向通信设备发送的天线的数量。 N是接收天线和接收机的数量。 M和N是大于1的整数。 无线通信设备以M为N-1 MIMO模式操作，而N个接收天线中的第一个和N个接收机中的第一个接收机从第二基站接收无线通信。