公开(公告)号：JP2006254438A

公开(公告)日：2006-09-21

申请号：JP2006059009

申请日：2006-03-06

Applicant: Motorola Inc ,  モトローラ・インコーポレイテッドMotorola Incorporated

Inventor： SINGH AJOY K ,  BHATT YOGESH B

IPC: H04L12/56 ,  H04L12/28 ,  H04W36/12

CPC classification number: H04W36/12 ,  H04L69/324

Abstract: PROBLEM TO BE SOLVED: To provide a link layer handoff apparatus and method for coping with the existing packet-loss problem. SOLUTION: An intermediate buffer management layer (IBML) (201, 211) is introduced below a third layer of an OSI-based communications interface. The IBML buffers copies of OSI layer-3 packets that is transmitted via lower layers (205, 215) of the communications interface and manages the buffer contents using indications the IBML receives from one or more of the lower layers. When the IBML receives indication that a link layer hard handoff is in progress, the IBML transfers the presently being buffered packets to a corresponding IBML (202, 212) in the target communications interface. This sub-layer-3 buffer transfer enables the target communications interface to reduce packet-loss associated with the hard handoff. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种用于应对现有分组丢失问题的链路层切换装置和方法。 解决方案：在基于OSI的通信接口的第三层之下引入中间缓冲器管理层（IBLAM）（201,211）。 IBML缓冲通过通信接口的较低层（205,215）发送的OSI第三层数据包的副本，并使用IBML从一个或多个较低层接收的指示来管理缓冲器内容。 当IBML接收到链路层硬切换正在进行的指示时，IBML将当前正被缓冲的分组传送到目标通信接口中的相应IBML（202,212）。 该子层3缓冲器传输使得目标通信接口能够减少与硬切换相关联的分组丢失。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：AT430453T

公开(公告)日：2009-05-15

申请号：AT06004118

申请日：2006-03-01

Applicant: MOTOROLA INC

Inventor： SINGH AJOY K ,  BHATT YOGESH B

IPC: H04W36/02 ,  H04W36/12

Abstract: Various embodiments are described to address the need for an apparatus and method that improves link layer handoff by addressing the packet-loss problem existing today. An intermediate buffer management layer (IBML) (201, 211) is introduced below layer 3 of an OSI-based communications interface. The IBML buffers copies of OSI layer 3 packets being transmitted via lower layers (205, 215) of the interface and manages the buffer contents using indications the IBML receives from one or more of the lower layers. When the IBML receives an indication that a link layer hard handoff is proceeding, the IBML transfers the presently buffered packets to a corresponding IBML (202, 212) in the target communications interface. This sub-layer 3 buffer transfer enables the target communications interface to reduce packet-loss associated with the hard handoff.

公开(公告)号：GB2438105A

公开(公告)日：2007-11-14

申请号：GB0713749

申请日：2006-01-31

Applicant: MOTOROLA INC

Inventor： SINGH AJOY K ,  BHATLA MUKESH ,  JAYAPALAN JAY P

IPC: H04L12/56

Abstract: A communication device (202) minimizes an opportunity for a queue stall during a communication session employing a reliable transport protocol by setting a current mode of operation for a Radio Link Protocol (RLP) and, based on a quality of an air interface (118), switching to an RLP mode of operation different from the current mode during the communication session.

公开(公告)号：AU2003293201A8

公开(公告)日：2004-06-23

申请号：AU2003293201

申请日：2003-11-25

Applicant: MOTOROLA INC

Inventor： RAMANNA SHREESHA ,  NAKHJIRI MADJID F ,  SINGH AJOY K

IPC: H04L12/56 ,  H04L29/06 ,  G06F15/16

公开(公告)号：WO2006093617A2

公开(公告)日：2006-09-08

申请号：PCT/US2006003811

申请日：2006-01-31

Applicant: MOTOROLA INC ,  SINGH AJOY K ,  BHATLA MUKESH ,  JAYAPALAN JAY P

Inventor： SINGH AJOY K ,  BHATLA MUKESH ,  JAYAPALAN JAY P

CPC classification number: H04W28/06 ,  H04L1/1812 ,  H04L1/1825 ,  H04L1/1877 ,  H04W28/14 ,  H04W80/00

Abstract: A communication device (202) minimizes an opportunity for a queue stall during a communication session employing a reliable transport protocol by setting a current mode of operation for a Radio Link Protocol (RLP) and, based on a quality of an air interface (118), switching to an RLP mode of operation different from the current mode during the communication session.

Abstract translation: 通信设备（202）通过设置无线电链路协议（RLP）的当前操作模式，并且基于空中接口（118）的质量来最小化在采用可靠传输协议的通信会话期间队列停顿的机会， 在通信会话期间切换到与当前模式不同的RLP操作模式。

公开(公告)号：DE602006006491D1

公开(公告)日：2009-06-10

申请号：DE602006006491

申请日：2006-03-01

Applicant: MOTOROLA INC

Inventor： SINGH AJOY K ,  BHATT YOGESH B

IPC: H04W36/02 ,  H04W36/12

Abstract: Various embodiments are described to address the need for an apparatus and method that improves link layer handoff by addressing the packet-loss problem existing today. An intermediate buffer management layer (IBML) (201, 211) is introduced below layer 3 of an OSI-based communications interface. The IBML buffers copies of OSI layer 3 packets being transmitted via lower layers (205, 215) of the interface and manages the buffer contents using indications the IBML receives from one or more of the lower layers. When the IBML receives an indication that a link layer hard handoff is proceeding, the IBML transfers the presently buffered packets to a corresponding IBML (202, 212) in the target communications interface. This sub-layer 3 buffer transfer enables the target communications interface to reduce packet-loss associated with the hard handoff.

公开(公告)号：CA2536702A1

公开(公告)日：2006-09-07

申请号：CA2536702

申请日：2006-02-15

Applicant: MOTOROLA INC

Inventor： SINGH AJOY K ,  BHATT YOGESH B

IPC: H04L29/06 ,  H04L12/28 ,  H04L29/08 ,  H04W36/12

Abstract: Various embodiments are described to address the need for an apparatus and method that improves link layer handoff by addressing the packet-loss problem existing today. An intermediate buffer management layer (IBML) (201, 211) is introduced below layer 3 of an OSI-based communications interface. The IBML buffers copies of OSI layer 3 packets being transmitted via lower layers (205, 215) of the interface and manages the buffer contents using indications the IBML receives from one or more of the lower layers. When the IBML receives an indication that a link layer har d handoff is proceeding, the IBML transfers the presently buffered packets to a corresponding IBML (202, 212) in the target communications interface. This sub-layer 3 buffer transfer enables the target communications interface to reduce packet-loss associated with the hard handoff.

公开(公告)号：AU2003287601A1

公开(公告)日：2004-06-15

申请号：AU2003287601

申请日：2003-11-06

Applicant: MOTOROLA INC

Inventor： VALDIVIA MARY M ,  SINGH AJOY K ,  NATARAJAN KADATHUR S ,  ARUMUGAM KARTHIKEYAN ,  REDDY MUDDASANI S

IPC: H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04W8/06 ,  H04W8/08 ,  H04W36/00 ,  H04W36/14 ,  H04W36/30 ,  H04W36/36 ,  H04W80/04 ,  H04W88/06 ,  H04W92/02

Abstract: An apparatus and method for performing Mobile/IP handoff between different access technologies. Associated with each access technology are two thresholds, a Low Water Mark and a High Water Mark. The method uses these water marks to its access technology selection in a particular environment. Using the method, a mobile node 102 remains on its preferred network when the signal strength on the preferred network (interface) is above the low water mark. When the signal strength on the preferred network drops below the high water mark, the method calculates the low water mark for the network. When the signal strength on the preferred network drops below the low water mark (LWM), the method initiates handoff to the next available network that meets certain conditions. The method initiates handoff back to the preferred network when the signal strength measurement on the preferred network is again above the high water mark.

公开(公告)号：CA2590022C

公开(公告)日：2011-08-23

申请号：CA2590022

申请日：2005-11-17

Applicant: MOTOROLA INC

Inventor： WANG MICHAEL M ,  AGRAWAL RAJEEV ,  BROWN TYLER A ,  CHEN XIANGYANG ,  SINGH AJOY K

IPC: H04L1/00 ,  H04B1/10 ,  H04B1/16 ,  H04L27/06 ,  H04L27/14 ,  H04L27/16 ,  H04L27/22

Abstract: A method (1700) and apparatus (1801) provide channel estimation with extended bandwidth filters. Antenna (1813) receives a signal such as a pilot signal and detects a bandwidth associated with the pilot signal in a detector (320). One of a plurality of filters (603, 605, 607, and 609) including extended bandwidth filters (311) and a default filter (305) can be selected by a selector (617). If the detector detects activity associated with a wider bandwidth, the filter associated with the wider bandwidth is selected over the presently selected filter. If no activity is detected, the default filter is selected.

公开(公告)号：ES2322088T3

公开(公告)日：2009-06-16

申请号：ES06004118

申请日：2006-03-01

Applicant: MOTOROLA INC

Inventor： SINGH AJOY K ,  BHATT YOGESH B

IPC: H04W36/02 ,  H04W36/12

Abstract: Método para traspaso de capa de enlace mejorado que comprende las etapas de: almacenar en memoria intermedia copias de paquetes por una capa de gestión de memoria intermedia, IBML (201, 211) en una interfaz de comunicaciones basada en interconexión de sistemas abiertos, OSI, fuente para producir un grupo de paquetes almacenados en memoria intermedia, en el que los paquetes son paquetes de capa 3 de OSI que están transmitiéndose a través de al menos una capa inferior de la interfaz de comunicaciones basada en OSI fuente, estando las capas inferiores por debajo de la capa 3 de OSI; recibir, por la IBML (201, 211) desde una capa inferior de la al menos una capa inferior, una indicación de que un traspaso duro de capa de enlace es inminente; transferir, por la IBML (201, 211) en respuesta a la indicación de traspaso duro de capa de enlace, el grupo de paquetes almacenados en memoria intermedia a una IBML (202, 212) objetivo en una interfaz de comunicaciones basada en OSI objetivo.