公开(公告)号：US07110785B1

公开(公告)日：2006-09-19

申请号：US09696491

申请日：2000-10-25

Applicant: David W. Paranchych ,  Yiping Wang ,  Ashvin H. Chheda

Inventor： David W. Paranchych ,  Yiping Wang ,  Ashvin H. Chheda

IPC: H04B7/00

CPC classification number: H04W52/44 ,  H04W52/12 ,  H04W52/241

Abstract: A mobile communications system includes base stations and mobile units. A power control scheme is provided in which a mobile unit can enter into a discontinuous transmission (DTX) mode. During DTX mode, the mobile unit is not transmitting traffic channels that can be monitored to determine frame errors so that the target ratio of energy per bit to noise spectral density (target Eb/No) can be adjusted. Instead, the base station monitors bit errors of bits in a pilot channel communicated by the mobile unit during DTX mode. Using this technique, the target Eb/No can be adjusted even when the mobile unit is not transmitting traffic channels, so that outer-loop power control can be performed. A number of mechanisms can also be used to detect when a mobile unit has entered DTX mode.

公开(公告)号：US06907018B1

公开(公告)日：2005-06-14

申请号：US09687796

申请日：2000-10-13

Applicant: David W. Paranchych ,  Ashvin H. Chheda

Inventor： David W. Paranchych ,  Ashvin H. Chheda

IPC: H04B7/005 ,  H04W52/00 ,  H04W52/02 ,  H04W52/26 ,  H04Q7/00

CPC classification number: H04W52/267 ,  H04W28/22

Abstract: A method for optimizing power management in the transmittal of a variable rate data transfer between two wireless stations, such as a Base Station Transceiver and a Mobile Station. This is achieved by determining the initial power and the initial signal-to-noise values based on the reliability of the transmission, the desired data transfer rate, the power required to transmit a fixed rate message, and the frame error rates. By the use of this invention, the capacity of a desired system and/or quality of a service provided by a desired system may be enhanced.

Abstract translation: 一种用于在诸如基站收发器和移动站之间的两个无线站之间传输可变速率数据传输的功率管理优化的方法。 这通过基于传输的可靠性，期望的数据传输速率，发送固定速率消息所需的功率和帧错误率确定初始功率和初始信噪比来实现。 通过使用本发明，可以增强期望系统的容量和/或由期望的系统提供的服务的质量。

公开(公告)号：US07843878B2

公开(公告)日：2010-11-30

申请号：US09960008

申请日：2001-09-21

Applicant: Linda Morales ,  Geng Wu ,  Azeem Ahmad ,  David W. Paranchych ,  Mini Vasudevan ,  Yusuke Higashi

Inventor： Linda Morales ,  Geng Wu ,  Azeem Ahmad ,  David W. Paranchych ,  Mini Vasudevan ,  Yusuke Higashi

IPC: G08C17/00 ,  H04J3/16 ,  H04W36/00

CPC classification number: H04W36/0066 ,  H04W36/38

Abstract: A wireless communications network includes a first base station system that performs wireless communications according to a first protocol (e.g., 1xEV-DO protocol) and a second base station system that performs wireless communications according to a second, different protocol (e.g., IS-2000). A link is provided between the first and second base station systems to enable a network-initiated handoff procedure. If a source base station system detects that a handoff of a mobile station to a target base station system is required, the source base station system exchanges messaging over the link with the target base station system to perform the handoff. In one example, the handoff is a hard handoff.

Abstract translation: 无线通信网络包括根据第一协议（例如，1xEV-DO协议）执行无线通信的第一基站系统和根据第二不同协议（例如，IS-2000）执行无线通信的第二基站系统 ）。 在第一和第二基站系统之间提供链路以实现网络发起的切换过程。 如果源基站系统检测到需要将移动台切换到目标基站系统，则源基站系统通过与目标基站系统的链路交换消息，以执行切换。 在一个例子中，切换是硬切换。

公开(公告)号：US06725062B1

公开(公告)日：2004-04-20

申请号：US09456905

申请日：1999-12-08

Applicant: David W. Paranchych

Inventor： David W. Paranchych

IPC: H04B138

CPC classification number: H04J13/0048 ,  H04B7/2628 ,  H04J13/18

Abstract: A method for sharing Walsh codes between at least two mobile stations operating simultaneously in a Control Hold Medium Access Control (MAC) state in Code Division Multiple Access (CDMA), whereby for each respective mobile station, upon entry of the respective mobile station into the Control Hold MAC state, a gating rate 1/x to be used by the respective mobile station, wherein x is greater than one, is determined. A Walsh code being used by less than x mobile stations in the control hold MAC state is identified and allocated to the respective mobile station to thereby define a channel of communication for the respective mobile station. A time slot which is not being used by any mobile stations using the identified Walsh code in the control hold MAC state, is identified and allocated to the respective mobile station, thereby permitting at least one signal to be transmitted between a base station and the respective mobile station using the identified Walsh code during the time slot allocated to the respective mobile station.

Abstract translation: 一种用于在码分多址（CDMA）中的控制保持媒体接入控制（MAC）状态下同时操作的至少两个移动台之间共享沃尔什码的方法，由此对于每个相应的移动台，在相应的移动台进入 控制保持MAC状态，确定由各个移动台使用的门控速率1 / x，其中x大于1。 识别由控制保持MAC状态中的少于x个移动台使用的沃尔什码，并将其分配给相应的移动台，从而为相应的移动台定义通信信道。 识别并分配在控制保持MAC状态中使用识别的沃尔什码的任何移动台未使用的时隙，从而允许在基站和相应的移动台之间传送至少一个信号 移动台在分配给各个移动台的时隙期间使用所识别的沃尔什码。

公开(公告)号：US07116708B2

公开(公告)日：2006-10-03

申请号：US10183809

申请日：2002-06-27

Applicant: Anit Lohtia ,  David W. Paranchych ,  Yuqiang Tang

Inventor： Anit Lohtia ,  David W. Paranchych ,  Yuqiang Tang

IPC: H04Q1/20

CPC classification number: H04W28/22

Abstract: A wireless communications network includes a mobile station and wireless access equipment. In communications between the wireless access equipment and the mobile station (such as in the forward link), a data rate is specified. However, the effective data rate can be reduced (with respect to the specified data rate) if it is determined that the specified data rate is not needed. In one arrangement, the effective data rate is reduced by waiting to fill a physical layer packet before transmission.

Abstract translation: 无线通信网络包括移动台和无线接入设备。 在无线接入设备与移动台（例如前向链路）之间的通信中，指定了数据速率。 然而，如果确定不需要指定的数据速率，则可以减少有效数据速率（相对于指定的数据速率）。 在一种布置中，通过在传输之前等待填充物理层分组来减少有效数据速率。

公开(公告)号：US06704370B1

公开(公告)日：2004-03-09

申请号：US09290816

申请日：1999-04-13

Applicant: Ashvin Chheda ,  David W. Paranchych

Inventor： Ashvin Chheda ,  David W. Paranchych

IPC: H04L2704

CPC classification number: H04L1/06

Abstract: Disclosed is an encoder, interleaver and splitter design approach for increasing system capacity. This is accomplished in a dual path embodiment by splitting the data stream into two subsets where one subset contains even number position bits of the original set and the other subset comprises the remaining odd bits. Each of the subsets may then be interleaved in standard fashion. This approach ensures that consecutively occurring bits in the original set are never transmitted from the same antenna and can be used to maximize the distance (and accordingly the time of transmission) between alternately occurring bits. The thought process behind this embodiment of the invention may be used to design a single interleaver as practiced in the prior art to accomplish the equivalent end result. The design process may be modified to include any number of transmission paths. Additional improvement of capacity may be obtained where each subset is interleaved in a manner to maximize the time separation between transmission of data bits, originally occurring L bits apart, prior to splitting or interleaving, in each of L data paths.

Abstract translation: 公开了一种用于增加系统容量的编码器，交织器和分离器设计方法。 这是通过将数据流分成两个子集来实​​现的，其中一个子集包含原始集合的偶数位置位，而另一个子集包括剩余的奇数位。 然后可以以标准方式交错每个子集。 该方法确保原始集合中的连续发生的位从不从相同的天线发射，并且可以用于最大化交替发生的位之间的距离（并且因此传输的时间）。 本发明该实施例背后的思想过程可用于设计如现有技术中实践的完成相同最终结果的单个交织器。 可以修改设计过程以包括任何数量的传输路径。可以获得额外的容量改进，其中每个子集以最大化在分割之前最初出现L个比特位的数据比特的传输之间的时间间隔最大化地进行交织，或者 在L个数据路径的每一个中交织。