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1. 发明授权

US07110785B1 Performing power control in a mobile communications system 有权
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.

2. 发明授权

US06907018B1 Method and system for initial power management for data bursts in CDMA systems 有权
标题翻译： CDMA系统中数据突发的初始功率管理方法和系统
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。

3. 发明授权

US06996056B2 Method and apparatus for orthogonal code management in CDMA systems using smart antenna technology 有权
公开(公告)号：US06996056B2
公开(公告)日：2006-02-07
申请号：US09871581
申请日：2001-05-31
申请人： Ashvin H. Chheda , Yiping Wang , Mehmet Yavuz
发明人： Ashvin H. Chheda , Yiping Wang , Mehmet Yavuz
IPC分类号： H04J11/00
CPC分类号： H04W16/12 , H04W16/02 , H04W16/24
摘要： A method and apparatus for enabling Orthogonal codes to be reused within the same cell of a code division multiple access telecommunication network includes an base station transceiver system that comprises logic circuitry for enabling the base station transceiver system to reuse Orthogonal codes in a manner that reduces the likelihood of collision between two mobile stations having the same Orthogonal code and corresponding communication channels. The method of the present invention specifically includes analyzing user characteristics including factors such as his physical movement, location and mobile station communication type, as well as angular placement

4. 发明授权

US06898192B2 Method and apparatus for improving fast forward link power control during variable rate operation of CDMA systems 有权
标题翻译：用于在CDMA系统的可变速率操作期间改善快进链路功率控制的方法和装置
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。

5. 发明授权

US06912403B2 Method and apparatus for fast forward-link power control and synchronization of base stations 有权
标题翻译：用于基站快速前向链路功率控制和同步的方法和装置
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。

6. 发明授权

US07327716B2 Reverse link enhancement for CDMA 2000 Release D 有权
标题翻译： CDMA 2000 Release D的反向链路增强
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。

7. 发明授权

US06804530B2 Method and apparatus for detection of forward and reverse DTX mode of operation detection in CDMA systems 有权
标题翻译： CDMA系统正向和反向DTX操作模式检测方法和装置
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。

8. 发明授权

US07474642B1 Signaling reliability in using high-speed shared packet data channel 有权
标题翻译：使用高速共享分组数据信道的信令可靠性
公开(公告)号：US07474642B1
公开(公告)日：2009-01-06
申请号：US10941468
申请日：2004-09-15
申请人： Ashvin H. Chheda
发明人： Ashvin H. Chheda
IPC分类号： H04Q7/00 , H04L12/56 , H04B7/216
CPC分类号： H04B7/264
摘要： The present invention provides a priority scheme and a data rate reduction method to increase the reliability of the signaling messages on a shared packet data channel. Signaling messages and packet data received for transmission are stored in a packet data buffer and at least one signaling buffer, respectively. Packet data or signaling messages are transmitted based on the scheduling algorithm assigned priority. The signaling message priorities are adjusted by a weighting factor assigned to the signaling buffer. The signaling message priority may be adjusted by a Quality of Service level. The transmission data rate is adjusted by an offset factor from the highest possible data rate that can be supported to a lower rate to improve reliability. To increase the effective data rate, the signaling message may be concatenated with another signaling message in order to completely fill the signaling message frame.
摘要翻译：本发明提供一种提高共享分组数据信道上的信令消息的可靠性的优先方案和数据速率降低方法。接收用于发送的信令消息和分组数据分别存储在分组数据缓冲器和至少一个信令缓冲器中。基于分配优先级的调度算法来发送分组数据或信令消息。通过分配给信令缓冲器的加权因子调整信令消息优先级。信令消息优先级可以通过服务质量级别来调整。传输数据速率由可以支持的最高可能数据速率的偏移因子调整到更低的速率以提高可靠性。为了增加有效数据速率，信令消息可以与另一个信令消息相连，以便完全填充信令消息帧。

9. 发明授权

US06622023B2 Method and apparatus for improved fast forward power control in a CDMA network 有权
公开(公告)号：US06622023B2
公开(公告)日：2003-09-16
申请号：US09732268
申请日：2000-12-07
申请人： Ashvin H. Chheda
发明人： Ashvin H. Chheda
IPC分类号： H04B700
CPC分类号： H04W52/58 , H04W52/12 , H04W52/24 , H04W52/40 , H04W52/60
摘要： A method and network element for fast forward power control in a CDMA network includes establishing an artificial FPC_SUBCHAN_GAIN parameter having a value different from an actual FPC_SUBCHAN_GAIN parameter. The actual FPC_SUBCHAN_GAIN parameter represents an actual amount of power by which a punctured bit has been increased or decreased. The artificial FPC_SUBCHAN_GAIN parameter is substituted in place of the actual FPC_SUBCHAN_GAIN parameter during fast forward power control. The value of the artificial FPC_SUBCHAN_GAIN parameter is selected to compensate for a diversity gain occurring as a result of an adding of a link or a dropping of a link between at least one base station transceiver and a mobile station. Lastly, the artificial FPC_SUBCHAN_GAIN parameter is sent from the at least one base station transceiver to the mobile station.

10. 发明授权

US07474627B2 Voice over internet protocol (VoIP) call admission and call regulation in a wireless network 有权
标题翻译：无线网络中的互联网语音协议（VoIP）呼叫准入和呼叫调节
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。

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