公开(公告)号：US06931257B2

公开(公告)日：2005-08-16

申请号：US10087368

申请日：2002-03-01

申请人： Reza Shahidi ,  Nirmal Velayudhan

发明人： Reza Shahidi ,  Nirmal Velayudhan

IPC分类号： H04B7/005 ,  H04Q7/20

CPC分类号： H04W52/362 ,  H04W36/18 ,  H04W52/143 ,  H04W52/20 ,  H04W52/228 ,  H04W52/40 ,  H04W88/08

摘要： A wireless communication network includes base stations that operate with variable transmit power adjustments during soft handoff of a mobile station. Base stations adjust current transmit powers up or down using variable step sizes responsive to power control commands from the mobile station. Step size depends on the difference between current transmit power and a common reference power. Generally, power control commands that move transmit power away from the common reference power are attenuated by decreasing the step size, and those that move the transmit power toward the reference power are amplified by increasing step size. A base station controller adjusts the common reference power during soft handoff to reduce differences between it and the current transmit powers. Thus, step size may be large at the outset of soft handoff to quickly reduce transmit power imbalance between base stations, but tends to decrease with subsequent adjustments of the common reference power.

摘要翻译： 无线通信网络包括在移动站的软切换期间以可变发射功率调整来操作的基站。 基站响应于来自移动台的功率控制命令，使用可变步长来向上或向下调整当前发射功率。 步长取决于当前发射功率和公共参考功率之间的差异。 通常，将发射功率从公共参考功率移开的功率控制命令通过减小步长而衰减，并且将发射功率向参考功率移动的功率控制命令通过增加步长而被放大。 基站控制器在软切换期间调整公共参考功率，以减少它与当前发射功率之间的差异。 因此，在软切换开始时，步长可能很大，以快速降低基站之间的发射功率不平衡，但是随着公共参考功率的随后调整而趋于减小。

公开(公告)号：US09042889B2

公开(公告)日：2015-05-26

申请号：US12874018

申请日：2010-09-01

申请人： Wei Qi ,  Arvind Swaminathan ,  Manasi D. Gandhi ,  James A. Hutchison, IV ,  Kishore Srirambhatla ,  Reza Shahidi ,  Alok Sharma

发明人： Wei Qi ,  Arvind Swaminathan ,  Manasi D. Gandhi ,  James A. Hutchison, IV ,  Kishore Srirambhatla ,  Reza Shahidi ,  Alok Sharma

IPC分类号： H04W36/30 ,  H04W80/04 ,  H04W48/16 ,  H04W48/18

CPC分类号： H04W48/18 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/22

摘要： Methods and apparatuses are provided that facilitate avoiding one or more wireless communication systems based at least in part on determining a level of unreliability of a reverse link channel related to a system. This can be based at least in part on determining whether the system can be accessed over the reverse link channel. If not, the wireless communication system can be avoided to conserve power utilized to perform such access attempts. Where the unreliability is temporary, however, some access attempts can be performed for systems of higher priority than a current system during the period of avoidance of one or more higher priority systems.

摘要翻译： 提供方法和装置，其至少部分地基于确定与系统相关的反向链路信道的不可靠性水平，从而避免一个或多个无线通信系统。 这可以至少部分地基于确定系统是否可以通过反向链路信道被访问。 如果不是，则可以避免无线通信系统以节省用于执行这种访问尝试的功率。 然而，在不可靠性是临时性的情况下，在避免一个或多个较高优先级系统的时期期间，可以针对比当前系统优先级更高的系统执行一些访问尝试。

公开(公告)号：US08903393B2

公开(公告)日：2014-12-02

申请号：US11835143

申请日：2007-08-07

申请人： Ajith T. Payyappilly ,  Lei Shen ,  Parag Arun Agashe ,  Reza Shahidi

发明人： Ajith T. Payyappilly ,  Lei Shen ,  Parag Arun Agashe ,  Reza Shahidi

IPC分类号： H04W36/00 ,  H04W36/26 ,  H04W28/24

CPC分类号： H04W36/26 ,  H04W28/24 ,  H04W36/0055

摘要： The disclosure relates to techniques for maintaining minimum quality of service (QoS) communication sessions with a wireless communication device (WCD) over a data-based communication network during a hard handoff between access networks for the WCD. More specifically, the techniques determine whether a closed connection between the WCD and a first access network during a minimum QoS communication session is due to a hard handoff between the first access network and a second access network. In the case of a hard handoff, the techniques maintain open QoS reservations associated with data flows included in the minimum QoS communication session for a predetermined period of time to enable a new connection to be established between the WCD and a second access network. The techniques described herein may especially useful when performing a voice over Internet Protocol (VoIP) call over an Evolution-Data Optimized (EVDO) communication network.

摘要翻译： 本公开涉及用于在用于WCD的接入网络之间的硬切换期间通过基于数据的通信网络来维持与无线通信设备（WCD）的最小服务质量（QoS）通信会话的技术。 更具体地，该技术确定在最小QoS​​通信会话期间WCD和第一接入网络之间的闭合连接是否是由于第一接入网络和第二接入网络之间的硬切换。 在硬切换的情况下，技术保持与包括在最小QoS​​通信会话中的数据流相关联的预定时间段的开放QoS保留，以使得能够在WCD和第二接入网络之间建立新连接。 当在演进数据优化（EVDO）通信网络上执行通过因特网协议（VoIP）呼叫的语音呼叫时，本文描述的技术尤其有用。

公开(公告)号：US20130053034A1

公开(公告)日：2013-02-28

申请号：US13220783

申请日：2011-08-30

申请人： Kuo-Chun Lee ,  Srinivasan Balasubramanian ,  Kirk A. Burroughs ,  Thomas Klingenbrunn ,  Ie-Hong Lin ,  Arash Mirbagheri ,  Jean-Michel R. Rousseau ,  Reza Shahidi

发明人： Kuo-Chun Lee ,  Srinivasan Balasubramanian ,  Kirk A. Burroughs ,  Thomas Klingenbrunn ,  Ie-Hong Lin ,  Arash Mirbagheri ,  Jean-Michel R. Rousseau ,  Reza Shahidi

IPC分类号： H04W64/00 ,  H04W36/08

CPC分类号： H04W4/20 ,  H04L67/148 ,  H04W4/02 ,  H04W36/14 ,  H04W64/00

摘要： When a user equipment engaged in mobile communications transfers from a network with one radio access technology (RAT) to another network with a different radio access technology, maintaining continuity of location based services can improve system performance. A user equipment may perform a series of checks when undergoing inter-RAT transfer to determine if a location based services protocol used with the source network is operable on the target network. The UE also determines if location based services sessions are at a point where they can be continued following inter-RAT transfer. Where possible, protocols and sessions are maintained to preserve location based services continuity.

摘要翻译： 当进行移动通信的用户设备从具有一个无线电接入技术（RAT）的网络向具有不同无线电接入技术的另一个网络传输时，维持基于位置的业务的连续性可以提高系统性能。 当进行RAT间传输时，用户设备可以执行一系列检查，以确定与源网络一起使用的基于位置的服务协议是否可在目标网络上操作。 UE还确定基于位置的服务会话是否在跨RAT传输之后可以继续的点。 在可能的情况下，维护协议和会话以保持基于位置的服务连续性。

公开(公告)号：US08385350B2

公开(公告)日：2013-02-26

申请号：US11743802

申请日：2007-05-03

申请人： Reza Shahidi ,  Ajith T. Payyappilly ,  Srinivasan Balasubramanian ,  Lei Shen

发明人： Reza Shahidi ,  Ajith T. Payyappilly ,  Srinivasan Balasubramanian ,  Lei Shen

IPC分类号： H04L12/28 ,  H04W4/00

CPC分类号： H04W76/38 ,  H04L69/28 ,  H04W28/12

摘要： Techniques to detect for end of service using dynamic inactivity timer thresholds are described. An access terminal establishes a radio connection for one or more applications. Data and signaling for the application(s) may be sent on one or more first flows (e.g., RLP flows) that may carry any number of second flows (e.g., IP flows). The access terminal determines a dynamic inactivity timer threshold for each first flow, e.g., based on at least one inactivity timer threshold for at least one second flow mapped to that first flow. The access terminal determines whether each first flow is inactive based on the inactivity timer threshold for that first flow, e.g., declares each first flow to be inactive if no activity is detected on that first flow for a period exceeding the inactivity timer threshold. The access terminal closes the radio connection when all first flow(s) are determined to be inactive.

摘要翻译： 描述使用动态不活动定时器阈值检测服务结束的技术。 接入终端为一个或多个应用建立无线电连接。 用于应用的数据和信令可以在可携带任何数量的第二流（例如，IP流）的一个或多个第一流（例如，RLP流）上发送。 接入终端例如基于映射到该第一流的至少一个第二流的至少一个不活动定时器阈值来确定每个第一流的动态不活动定时器阈值。 接入终端基于该第一流的不活动定时器阈值来确定每个第一流是否不活动，例如，如果在超过非活动定时器阈值的时间段内在该第一流上没有检测到活动，则将每个第一流声明为不活动。 当所有第一流被确定为不活动时，接入终端关闭无线电连接。

公开(公告)号：US20120140644A1

公开(公告)日：2012-06-07

申请号：US12959256

申请日：2010-12-02

申请人： Francis Ming-Meng Ngai ,  Reza Shahidi

发明人： Francis Ming-Meng Ngai ,  Reza Shahidi

IPC分类号： H04W24/02 ,  H04W28/00

CPC分类号： H04W74/00 ,  H04W28/18 ,  H04W36/0022

摘要： A method, an apparatus, and a computer program product for wireless communication are provided in which a user equipment (UE) may obtain at least one of a plurality of circuit switched fall back (CSFB) parameters from at least one of an LTE eNodeB or a usable system, wherein the plurality of CSFB parameters comprise a channel list, a system time, and a neighbor list, and may perform one or more system acquisition actions based on the at least one of the plurality of obtained CSFB parameters.

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，其中用户设备（UE）可以从LTE eNodeB中的至少一个获得多个电路交换回退（CSFB）参数中的至少一个， 可用系统，其中所述多个CSFB参数包括信道列表，系统时间和邻居列表，并且可以基于所获得的所述多个CSFB参数中的所述至少一个执行一个或多个系统采集动作。

公开(公告)号：US20100311420A1

公开(公告)日：2010-12-09

申请号：US12479217

申请日：2009-06-05

申请人： Ashrafur Md. Reza ,  Qingxin Chen ,  Reza Shahidi ,  Rajeev S. Kurundkar

发明人： Ashrafur Md. Reza ,  Qingxin Chen ,  Reza Shahidi ,  Rajeev S. Kurundkar

IPC分类号： H04W36/00

CPC分类号： H04W36/0005

摘要： A method and apparatus for facilitating handoff operations in a wireless communication device is provided. The method may comprise receiving, by a wireless communication device, a plurality of pilot signals, wherein the plurality of pilot signals includes an active pilot signal and one or more candidate pilot signals, selecting at least one nominal active pilot signal strength value for comparison with the active pilot signal, classifying the one or more candidate pilot signals into a respective one of a plurality of tiers based on a handoff factor corresponding to the at least one candidate pilot signal, wherein the plurality of tiers are divided according to one or more handoff factors, and selecting at least one threshold handoff value for each of the plurality of tiers, wherein the at least one threshold handoff value partly depends on one of the at least one nominal active pilot signal strength values.

摘要翻译： 提供一种用于促进无线通信设备中的切换操作的方法和装置。 所述方法可包括由无线通信设备接收多个导频信号，其中所述多个导频信号包括有源导频信号和一个或多个候选导频信号，选择至少一个标称有源导频信号强度值以与 所述有源导频信号基于与所述至少一个候选导频信号相对应的切换因子将所述一个或多个候选导频信号分类成多个层中的相应一个，其中，所述多个层根据一个或多个切换被划分 因素，并且为多个层级中的每一层选择至少一个阈值切换值，其中所述至少一个阈值切换值部分地取决于所述至少一个标称有效导频信号强度值之一。

公开(公告)号：US20100291884A1

公开(公告)日：2010-11-18

申请号：US12775380

申请日：2010-05-06

申请人： Jun Hu ,  Yu-Chuan Lin ,  Reza Shahidi ,  Vijaya C. Ramasami ,  Ravindra M. Garach

发明人： Jun Hu ,  Yu-Chuan Lin ,  Reza Shahidi ,  Vijaya C. Ramasami ,  Ravindra M. Garach

IPC分类号： H04B1/04

CPC分类号： H04W72/0473 ,  H04W72/044 ,  H04W72/1215 ,  H04W88/06 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/40

摘要： Systems and methods for allocating transmit power among multiple interfaces in a wireless communication system are disclosed. In one embodiment, the method comprises determining a first power level that is used for transmitting over a first air interface, determining a maximum power level available for transmitting over a second interface, comparing the first power level to the maximum power level, determining a second power level that is used for transmitting over the second air interface based on the comparison of the first power level to the maximum power level, and generating a power-based payload constraint based on the second power level.

摘要翻译： 公开了一种用于在无线通信系统中的多个接口之间分配发射功率的系统和方法。 在一个实施例中，该方法包括确定用于通过第一空中接口进行传输的第一功率电平，确定可用于通过第二接口发射的最大功率电平，将第一功率电平与最大功率电平进行比较，确定第二功率电平 基于第一功率电平与最大功率电平的比较，用于通过第二空中接口进行发送的功率电平，以及基于第二功率电平生成基于功率的有效载荷约束。

公开(公告)号：US20100279709A1

公开(公告)日：2010-11-04

申请号：US12432355

申请日：2009-04-29

申请人： Reza Shahidi ,  Sanjeev A. Athalye ,  Jeremy H. Lin ,  Victor A. Abramsky

发明人： Reza Shahidi ,  Sanjeev A. Athalye ,  Jeremy H. Lin ,  Victor A. Abramsky

IPC分类号： H04W24/00 ,  H04M1/00

CPC分类号： H04B1/406 ,  H04B1/3805 ,  H04B7/0602 ,  H04B7/0689 ,  H04B7/0805 ,  H04B7/0871

摘要： Systems and methodologies are described that facilitate multimode communication in wireless networks. Receiving and/or transmitting components can comprise a plurality of receive paths over which antennas can forward concurrently received signals to facilitate simultaneous or shared receiving of signals related to disparate communication technologies. The receive paths can be implemented by one or more multiplexers (e.g., diplexers, triplexers, etc.) to facilitate separating signals simultaneously received over disparate bands. In addition, antenna switching is described to facilitate shared receiving. Multimode transmitting is similarly provided. In particular, voice, data and global positioning system (GPS) signals can be concurrently received and processed by a wireless device.

摘要翻译： 描述了促进无线网络中的多模通信的系统和方法。 接收和/或发送组件可以包括多个接收路径，天线可以同时转发所接收的信号，以促进与不同通信技术相关的信号的同时或共享的接收。 接收路径可以由一个或多个复用器（例如，双工器，三工器等）来实现，以便于分离同时在不同频带上接收的信号。 另外，天线切换被描述为便于共享接收。 类似地提供多模发送。 特别地，语音，数据和全球定位系统（GPS）信号可以由无线设备同时接收和处理。

公开(公告)号：US20100124211A1

公开(公告)日：2010-05-20

申请号：US12272440

申请日：2008-11-17

申请人： Ajith Tom Payyappilly ,  Deepak Khandelwal ,  Lei Shen ,  Reza Shahidi

发明人： Ajith Tom Payyappilly ,  Deepak Khandelwal ,  Lei Shen ,  Reza Shahidi

IPC分类号： H04W76/00

CPC分类号： H04L65/1053 ,  H04W4/16 ,  H04W76/25

摘要： Methods, apparatuses, and systems for reducing an occurrence of a Voice over Internet Protocol (VoIP) call from being disconnected in an Evolution Data Only (EV-DO) system are disclosed. The VoIP call is placed on hold and at least one keep-alive packet is issued to prevent a radio link from disconnecting. The at least one keep-alive packet is issued at least while the VoIP call associated with the radio link is on hold and is configured to reset a dormancy timer for the call at one or more network entities.

摘要翻译： 公开了用于减少仅在演进数据（EV-DO）系统中断开的因特网协议（VoIP）呼叫的发生的方法，设备和系统。 VoIP呼叫被置于保持状态，并且发出至少一个保持活动分组以防止无线电链路断开连接。 至少一个保持活动分组至少在与无线电链路相关联的VoIP呼叫处于保持状态时发出，并且被配置为在一个或多个网络实体处为呼叫重置休眠定时器。