公开(公告)号：US07110785B1

公开(公告)日：2006-09-19

申请号：US09696491

申请日：2000-10-25

申请人： David W. Paranchych ,  Yiping Wang ,  Ashvin H. Chheda

发明人： David W. Paranchych ,  Yiping Wang ,  Ashvin H. Chheda

IPC分类号： H04B7/00

CPC分类号： H04W52/44 ,  H04W52/12 ,  H04W52/241

摘要： 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：US06912403B2

公开(公告)日：2005-06-28

申请号：US09751464

申请日：2000-12-29

申请人： Azeem Ahmad ,  Ashvin H. Chheda

发明人： Azeem Ahmad ,  Ashvin H. Chheda

IPC分类号： H04B7/005 ,  H04B7/00 ,  H04Q7/20

CPC分类号： H04W52/40 ,  H04W52/143 ,  H04W52/221

摘要： A method and apparatus for controlling forward gain transmission values of a base station transceiver system includes adjusting forward gain values according to mobile station power control commands as well as to forward gain values commanded by a base station controller. The forward gain values commanded by a base station controller are used as an input to determining what the forward gain value should be and are not implemented exactly as commanded. Thus, a base station transceiver system formed according to the present invention examines the power control commands received by a mobile station relative to a power gain command received by the base station controller. For example, if the power gain command received from the base station controller is responsive to a forward gain value that was transmitted in the past, when a plurality of power control commands were received in the interim, the plurality of power control commands are accounted for as well as the forward gain value commanded by the base station controller when determining the actual forward gain value for the next transmission. Additionally, subsequent power gain commands are also compared to prior power gain commands wherein subsequent adjustments are only made based on the differences between them.

摘要翻译： 用于控制基站收发信机的前向增益传输值的方法和装置包括根据移动台功率控制命令调整前向增益值以及转发由基站控制器命令的增益值。 由基站控制器命令的正向增益值用作确定正向增益值应该是什么以及不按照命令执行的输入。 因此，根据本发明形成的基站收发机系统检查移动台相对于由基站控制器接收的功率增益命令所接收的功率控制命令。 例如，如果从基站控制器接收到的功率增益命令响应于过去发送的正向增益值，则当在此期间接收到多个功率控制命令时，多个功率控制命令被计入 以及当确定用于下次发送的实际正向增益值时由基站控制器指令的正向增益值。 此外，后续功率增益命令也与现有功率增益命令进行比较，其中后续调整仅基于它们之间的差异进行。

公开(公告)号：US07327716B2

公开(公告)日：2008-02-05

申请号：US10794787

申请日：2004-03-05

申请人： Mo-Han Fong ,  Jun Li ,  Ashvin H. Chheda ,  Sophie Vrzic ,  Hang Zhang ,  Ali Iraqi

发明人： Mo-Han Fong ,  Jun Li ,  Ashvin H. Chheda ,  Sophie Vrzic ,  Hang Zhang ,  Ali Iraqi

IPC分类号： H04J3/24

CPC分类号： H04W28/22

摘要： A mobile station transmits sub-packets at a specified transmission rate or an autonomous transmission rate based on a PERSISTENCE bit. The mobile station increments, decrements, or does not change the transmission rate when the PERSISTENCE bit is a second logic state and a rate control bit (RCB) value is a first, a second, or a third value. Another embodiment of the present invention includes an ALL_ACID_IND bit that instructs the mobile station to adjust the specified transmission rate for either a single H-ARQ channel or for all H-ARQ channels. In an alternate embodiment, the mobile station uses the RCB in conjunction with a NAK to adjust a transmission-to-pilot ratio. After the NAK, the mobile station monitors the RCB value to increase the transmission rate, decrease the transmission rate, or not to change the transmission rate of subsequent sub-packets of the same data packet.

摘要翻译： 移动台基于PERSISTENCE位以指定的传输速率或自主传输速率发送子分组。 当PERSISTENCE位是第二逻辑状态并且速率控制位（RCB）值是第一，第二或第三值时，移动站递增，递减或不改变传输速率。 本发明的另一实施例包括指示移动台为单个H-ARQ信道或所有H-ARQ信道调整指定传输速率的ALL_ACID_IND位。 在替代实施例中，移动台使用RCB结合NAK来调整传输到导频比。 在NAK之后，移动台监视RCB值以增加传输速率，降低传输速率，或者不改变相同数据分组的后续子分组的传输速率。

公开(公告)号：US06804530B2

公开(公告)日：2004-10-12

申请号：US09751462

申请日：2000-12-29

申请人： Ashvin H. Chheda ,  Geng Wu

发明人： Ashvin H. Chheda ,  Geng Wu

IPC分类号： H04B700

CPC分类号： H04W52/288 ,  H04L1/20 ,  H04L1/201 ,  H04W52/16 ,  H04W52/44

摘要： A base station controller includes circuitry for determining whether a transmitter is transmitting in a DTX mode or operation for a supplemental channel in a CDMA network. The invention includes the steps of determining frame quality metrics for data received on a fundamental and a supplemental channel. If the frame quality metric is good, meaning that the number of errors is below a defined threshold, on the supplemental channel, then the mobile station is not, by definition, within a DTX mode of operation. However, if each of the base stations that are on the active list of base stations for the mobile station report that the mobile station frame quality metric is not below or within a specified threshold, then the base station performs a calculation to determine whether the mobile station is in a DTX mode of operation or is transmitting a null set. Specifically, the base station calculates a signal to noise ratio for the pilot channel as well as for the supplemental channel and compares or determines a ratio of these two calculations. If the ratio is within or below a specified threshold, then an erasure has occurred. If not, then the mobile station did transmit in a DTX mode of operation.

摘要翻译： 基站控制器包括用于确定发射机是否以DTX模式进行传输或用于CDMA网络中的补充信道的操作的电路。 本发明包括确定在基本信道和补充信道上接收的数据的帧质量度量的步骤。 如果帧质量度量好，意味着错误数量低于定义的阈值，则在补充信道上，则移动台根据定义不在DTX操作模式中。 然而，如果位于移动站的基站的活动列表上的每个基站报告移动站帧质量度量不在或低于指定阈值内，则基站执行计算以确定移动站 站处于DTX操作模式或正在发送空集。 具体地，基站计算导频信道以及补充信道的信噪比，并比较或确定这两个计算的比率。 如果比率在指定阈值内或低于指定阈值，则发生擦除。 如果没有，则移动台确实以DTX操作模式发送。

公开(公告)号：US07474627B2

公开(公告)日：2009-01-06

申请号：US11015398

申请日：2004-12-17

申请人： Ashvin H. Chheda ,  Charles Martin

发明人： Ashvin H. Chheda ,  Charles Martin

IPC分类号： H04J1/16

CPC分类号： H04W28/02 ,  H04L47/11 ,  H04L47/14 ,  H04L47/15 ,  H04L47/283 ,  H04L47/70 ,  H04L47/745 ,  H04L47/801 ,  H04L47/822 ,  H04L47/824

摘要： A method and apparatus for providing wireless data packet call regulation and call access for wireless Voice over Internet Protocol (VoIP) communications in a wireless network. A first and second time stamp is generated upon the reception and successful transmission of a data packet. A packet delay is determined based upon the first and second time stamps. At least one average delay metric is used to determine whether to provide new call access based on the at least one average delay metric. Another aspect of the present invention is to block a class of users based, in part, on the average sector delay for each user subscriber class. If the average sector delay is greater than that allowed for a class of users, users of that class are denied access. A delay quality of service (QoS) block metric is used to determine if an individual user should be force dropped.

摘要翻译： 一种用于在无线网络中为无线语音互联网协议（VoIP）通信提供无线数据分组呼叫调节和呼叫接入的方法和装置。 在数据包的接收和成功发送时产生第一和第二时间戳。 基于第一和第二时间戳来确定分组延迟。 使用至少一个平均延迟度量来确定是否基于至少一个平均延迟度量来提供新的呼叫接入。 本发明的另一方面是部分地基于每个用户用户类别的平均扇区延迟来阻止一类用户。 如果平均扇区延迟大于一类用户允许的延迟，那么该类的用户将被拒绝访问。 使用延迟服务质量（QoS）块度量来确定单个用户是否应该被强制放弃。

公开(公告)号：US07142548B2

公开(公告)日：2006-11-28

申请号：US10800119

申请日：2004-03-12

申请人： Mo-Han Fong ,  Jun Li ,  Sophie S. Vrzic ,  Ali Iraqi ,  Ashvin H. Chheda

发明人： Mo-Han Fong ,  Jun Li ,  Sophie S. Vrzic ,  Ali Iraqi ,  Ashvin H. Chheda

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04L12/26 ,  H04B7/185 ,  H04B7/00 ,  H04B1/00 ,  H04J3/16

CPC分类号： H04W72/1284 ,  H04W52/365

摘要： A wireless communications network includes a mobile station and base station that are capable of communicating over a wireless link. Information relating to a status of a buffer in the mobile station and information relating to a data rate over a reverse wireless links is communicated over the reverse wireless link.

摘要翻译： 无线通信网络包括能够通过无线链路进行通信的移动站和基站。 与反向无线链路上的数据速率相关的信息与移动台中的缓冲器的状态相关的信息通过反向无线链路传送。

公开(公告)号：US06907018B1

公开(公告)日：2005-06-14

申请号：US09687796

申请日：2000-10-13

申请人： David W. Paranchych ,  Ashvin H. Chheda

发明人： David W. Paranchych ,  Ashvin H. Chheda

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

CPC分类号： H04W52/267 ,  H04W28/22

摘要： 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.

摘要翻译： 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：US06898192B2

公开(公告)日：2005-05-24

申请号：US09751273

申请日：2000-12-29

申请人： Ashvin H. Chheda ,  Yiping Wang

发明人： Ashvin H. Chheda ,  Yiping Wang

IPC分类号： H04B7/005 ,  H04B7/16 ,  H04B7/216 ,  H04J13/00

CPC分类号： H04W52/267 ,  H04W52/12 ,  H04W52/143 ,  H04W52/20 ,  H04W52/36

摘要： The method and apparatus of the present invention includes reducing the power level by a delta value in excess of the reduction in the bit error rate and its proportionate power reduction rate in response to a data rate change. If the bit rate is reduced to eighth, then the power transmission level can be reduced to a value of 1/(8+Δ) relative to FULL power. As an additional aspect of the present invention, the base station controller also generates a selectable frame error rate calculates the corresponding signal to noise ratios that will provide the commanded frame error rate. The FER may be selected according to data type or source or according to power transmission level and for data rate.

摘要翻译： 本发明的方法和装置包括响应于数据速率变化，将功率电平降低超过比特误码率的降低和其相应功率减小率的增量值。 如果比特率降低到第八，则功率传输电平可以相对于全功率减小到1 /（8 + Delta）的值。 作为本发明的另一方面，基站控制器还产生可选择的帧错误率来计算将提供命令帧错误率的对应的信噪比。 可以根据数据类型或来源或根据功率传输级别和数据速率选择FER。

公开(公告)号：US6160999A

公开(公告)日：2000-12-12

申请号：US937305

申请日：1997-08-18

申请人： Ashvin H. Chheda ,  Ahmad Jalali

发明人： Ashvin H. Chheda ,  Ahmad Jalali

IPC分类号： H04B7/005 ,  H04W36/18 ,  H04W52/40 ,  H04B1/00

CPC分类号： H04W52/40 ,  H04W36/18

摘要： A wireless communication system facilitates wireless communication with a mobile unit operating within a respective service area. The wireless communication system includes a mobile switching center and a plurality of base stations with each base stations coupled to the mobile switching center and providing wireless coverage within a respective portion of the service area. The mobile unit wirelessly connects to at least two of the base stations (or sectors of the base stations) that transmit to the mobile unit via respective forward links at respective transmit levels. These respective transmit levels are based upon forward link requirements of the mobile unit. The mobile unit transmits to the at least two base stations/sectors via a respective plurality of reverse links. Forward link transmit levels may be determined based upon the quality of corresponding reverse link transmissions or from the quality of pilot signals or forward link transmissions received by the mobile unit. Forward link transmissions are made via the most favorable forward links (at least one) while transmissions are not made, or are made at reduced power levels on the least favorable forward links. During management of the wireless communication system, forward link transmissions are initiated and discontinued based upon the forward link transmission power requirements of the mobile unit. While managing the forward link transmissions, the forward link transmission power requirements of the mobile unit may be compared to a plurality of thresholds. When these thresholds are exceeded, the management requires altering which base stations make forward link transmissions and at what levels such transmissions are made. In a particular embodiment of the wireless communication system, the system operates according to a code division multiple access protocol.

摘要翻译： 无线通信系统促进与在相应服务区域内操作的移动单元的无线通信。 无线通信系统包括移动交换中心和多个基站，每个基站耦合到移动交换中心，并在服务区域的相应部分内提供无线覆盖。 移动单元通过相应的发送电平的各自的前向链路与至少两个基站（或基站的扇区）无线地连接。 这些各自的传输级别基于移动单元的前向链路要求。 移动单元经由相应的多个反向链路向至少两个基站/扇区发送。 可以基于对应的反向链路传输的质量或由移动单元接收的导频信号或前向链路传输的质量来确定前向链路传输级别。 通过最不利的前向链路（至少一个）进行前向链路传输，而不进行传输，或者在最不利的前向链路上以较低的功率级别进行传输。 在无线通信系统的管理期间，基于移动单元的前向链路发送功率需求，发起和中断前向链路传输。 在管理前向链路传输时，可以将移动单元的前向链路传输功率要求与多个阈值进行比较。 当超过这些阈值时，管理需要改变哪些基站进行前向链路传输，并且在什么级别进行这样的传输。 在无线通信系统的特定实施例中，系统根据码分多址协议进行操作。

公开(公告)号：US6038448A

公开(公告)日：2000-03-14

申请号：US899105

申请日：1997-07-23

申请人： Ashvin H. Chheda ,  Ahmad Jalali

发明人： Ashvin H. Chheda ,  Ahmad Jalali

IPC分类号： H04W16/24 ,  H04W36/30 ,  H04B7/20

CPC分类号： H04W36/30 ,  H04W16/24

摘要： A wireless communication system facilitates wireless communication with a mobile unit within a respective service area. The wireless communication system includes a mobile switching center and a plurality of base stations. Each base station couples to the mobile switching center and provides wireless communication within a respective cell or within a plurality of respective sectors. Each base station provides a pilot signal that may be received by the wireless mobile unit. With multiple sectors, a pilot signal is provided for each sector. The mobile unit may wirelessly connect to any of the base stations' cells and sectors. A determination of whether to be connected to a particular base station cell and/or base station sector is based upon the relative strengths of pilot signals received by the wireless mobile unit. The mobile unit may evaluate the relative strengths of received pilot signals and simply request a connection to a base station or a disconnection therefrom based upon the evaluation. However, the mobile unit may also notify the mobile switching center of strengths of received pilot signals with the mobile switching center taking action. In such case, the mobile switching center may determine thresholds and pass the thresholds to the mobile unit for later use, the thresholds based upon the relative strengths of the pilot signals. A corresponding method includes steps for operating a wireless communication system.

摘要翻译： 无线通信系统促进与相应服务区域内的移动单元的无线通信。 无线通信系统包括移动交换中心和多个基站。 每个基站耦合到移动交换中心，并在相应小区内或多个相应扇区内提供无线通信。 每个基站提供可由无线移动单元接收的导频信号。 对于多个扇区，为每个扇区提供导频信号。 移动单元可以无线地连接到任何基站的小区和扇区。 是否连接到特定基站小区和/或基站扇区的确定是基于由无线移动单元接收的导频信号的相对强度。 移动单元可以评估所接收的导频信号的相对强度，并且基于该评估简单地请求到基站的连接或其断开连接。 然而，移动单元还可以通过移动交换中心采取行动来通知移动交换中心接收到的导频信号的强度。 在这种情况下，移动交换中心可以确定阈值并将阈值传递给移动单元供以后使用，该阈值基于导频信号的相对强度。 相应的方法包括用于操作无线通信系统的步骤。