公开(公告)号：WO2006102637A1

公开(公告)日：2006-09-28

申请号：PCT/US2006/010955

申请日：2006-03-24

Applicant: QUALCOMM INCORPORATED ,  HUTCHISON, James, A. ,  HANG, Ling ,  HUGHES, Robbin, D.

Inventor： HUTCHISON, James, A. ,  HANG, Ling ,  HUGHES, Robbin, D.

IPC: H04B1/707

CPC classification number: H04B1/7075

Abstract: CDMA code channels are acquired using a crystal oscillator that is not temperature compensated and that generates a tuning signal with relatively large frequency error (e.g., +/-5 ppm). Channel acquisition is first attempted at no offset from a start frequency that is obtained by fitting an ideal temperature/frequency error curve to available actual data points. Following unsuccessful pilot acquisition, the offset frequency is stepped in a "spiral" manner, and pilot acquisition is retried. When the pilot and synchronization channels are successfully acquired, but the system identification is unexpected, an adjacent channel image has been acquired, and the offset frequency is bumped by a large step (e.g., 15 kHz). Pilot acquisition is retried using spiral stepping. The crystal oscillator is calibrated after each successful acquisition of the pilot, synchronization and paging channels by retaining a data point in a frequency adjustment table for the temperature at which frequency acquisition was successful.

Abstract translation: 使用不进行温度补偿的晶体振荡器并且产生具有相对大的频率误差（例如，+/- 5ppm）的调谐信号来获取CDMA码信道。 首先尝试通道采集，与通过将理想温度/频率误差曲线拟合到可用的实际数据点获得的起始频率无偏差。 在不成功的飞行员获取后，偏移频率以“螺旋”的方式进行，并重试飞行员采集。 当成功获取导频和同步信道，但系统识别是意想不到的时，已经获取了相邻信道图像，并且偏移频率被大步（例如，15kHz）冲撞。 使用螺旋踏步重试飞行员采集。 在通过在频率获取成功的温度的频率调整表中保留数据点，在每次成功获取导频，同步和寻呼信道之后校准晶体振荡器。

公开(公告)号：WO2003065747A1

公开(公告)日：2003-08-07

申请号：PCT/US2003/002896

申请日：2003-01-31

Applicant: QUALCOMM INCORPORATED

Inventor： CHALLA, Raghu ,  ACHOUR, Baaziz ,  HUGHES, Robbin, D.

IPC: H04Q7/32

CPC classification number: H04B1/70756 ,  H04B2201/70709 ,  H04W52/0216 ,  H04W52/029 ,  H04W56/0035 ,  Y02D70/40

Abstract: Various techniques for improving a wireless communication device are described. The techniques may include reducing power in a wireless communication device for a first sleep period and then increasing power in the wireless communication device for an intermediate wake period after the first sleep period to estimate an error of the sleep clock. The method may further include reducing power in the wireless communication device for a second sleep period after the intermediate wake period. The intermediate wake mode implemented during the intermediate period can be used to estimate the error of the sleep clock without performing one or more tasks associated with an awake mode, such as demodulation. The techniques may facilitate the effective use of low frequency low power clocks for sleep mode, even when relatively large slot cycles are defined within a slotted paging system.

Abstract translation: 描述了用于改进无线通信设备的各种技术。 这些技术可以包括在第一睡眠周期内减少无线通信设备中的功率，然后在第一睡眠周期之后的中间唤醒周期增加无线通信设备中的功率，以估计睡眠时钟的误差。 该方法还可以包括在中间唤醒周期之后的第二睡眠周期内减少无线通信设备中的功率。 在中间周期期间实现的中间唤醒模式可用于估计休眠时钟的误差，而不执行与诸如解调之类的唤醒模式相关联的一个或多个任务。 即使在时隙寻呼系统中定义相对较大的时隙周期，这些技术可以有助于有效地使用低频低功率时钟用于睡眠模式。

公开(公告)号：EP0965235B1

公开(公告)日：2005-12-07

申请号：EP98909132.7

申请日：1998-03-04

Applicant: QUALCOMM INCORPORATED

Inventor： AULT, Jan, C. ,  HUGHES, Robbin, D. ,  SOLIMAN, Samir, S.

IPC: H04Q7/00

CPC classification number: H04W48/18 ,  H04W88/06

Abstract: A wireless communication device (100) automatically and seamlessly switches to an alternate, available system when it is unable to complete a call origination attempt, without requiring the user to take any affirmative actions to select the alternate system or re-initiate a call origination. The wireless communication device (100) comprises a transceiver (104) and a processor (104). The transceiver (107) transmits and receives messages and signals. The processor (107) generates a first signaling message for transmission to a first communication system and generates a second signaling message for transmission to a second communication system if the transceiver does not receive an acknowledgement message from the first communication system. This decreases the percentage of call failures by providing a hold-over of pending call origination attempts until service is finally acquired. In the case of either exceeding the maximum number of access sequences (reverse link limited) or failure to acquire the forward link of the preferred communication system (forward link limited), the user is not required to re-initiate the call origination, thus turning a potential call failure into a success.

公开(公告)号：EP1300044B1

公开(公告)日：2008-06-04

申请号：EP01951058.5

申请日：2001-07-11

Applicant: QUALCOMM INCORPORATED

Inventor： NEW, Wen, Jing ,  LEVIN, Mark ,  HUGHES, Robbin, D.

IPC: H04Q7/38

CPC classification number: H04W48/16 ,  H04W24/00 ,  H04W36/00 ,  H04W36/0061 ,  H04W52/0216 ,  H04W56/00 ,  H04W68/00 ,  H04W76/28 ,  Y02D70/24

Abstract: Techniques to efficiently process paging channels in an asynchronous wireless communication system. In one aspect, if the base stations are not synchronized with each other and a remote terminal's designated page time is different from base station to base station, the remote terminal can wake up based on the earliest base station in a reacquisition search list that includes candidate base stations to which the remote terminal may be handed off. In another aspect, the criteria to select base stations for evaluation as reacquisition targets may be based on the received power of the base stations as well as their timing, both of which may be made relative to that of a preferred base station. In yet another aspect, the remote terminal may wake up multiple times in a particular paging cycle (i.e., a frame cycle or a DRX cycle) if there are one or more candidates base station to which the remote terminal may be handed off.

公开(公告)号：EP1192727B1

公开(公告)日：2006-05-17

申请号：EP00944992.7

申请日：2000-06-28

Applicant: QUALCOMM INCORPORATED

Inventor： HUGHES, Robbin, D. ,  WILLIAMSON, Paul, T.

IPC: H04B1/707

CPC classification number: H04B1/70754 ,  H04B1/7115

Abstract: Microprocessor resource utilization by a searching process is controlled by determining a search window size, accessing a lookup table to determine an integration interval and a number of non-coherent passes, and commanding a searching process to execute a multipath search according to these parameters. The lookup table comprises a plurality of integration intervals and corresponding number of non-coherent passes indexed according to search window such that an execution duration of the search process remains nominally constant over a variety of search window sizes.

公开(公告)号：EP1300044A2

公开(公告)日：2003-04-09

申请号：EP01951058.5

申请日：2001-07-11

Applicant: Qualcomm Incorporated

Inventor： NEW, Wen, Jing ,  LEVIN, Mark ,  HUGHES, Robbin, D.

IPC: H04Q7/38

CPC classification number: H04W48/16 ,  H04W24/00 ,  H04W36/00 ,  H04W36/0061 ,  H04W52/0216 ,  H04W56/00 ,  H04W68/00 ,  H04W76/28 ,  Y02D70/24

Abstract: Techniques to efficiently process paging channels in an asynchronous wireless communication system. In one aspect, if the base stations are not synchronized with each other and a remote terminal's designated page time is different from base station to base station, the remote terminal can wake up based on the earliest base station in a reacquisition search list that includes candidate base stations to which the remote terminal may be handed off. In another aspect, the criteria to select base stations for evaluation as reacquisition targets may be based on the received power of the base stations as well as their timing, both of which may be made relative to that of a preferred base station. In yet another aspect, the remote terminal may wake up multiple times in a particular paging cycle (i.e., a frame cycle or a DRX cycle) if there are one or more candidates base station to which the remote terminal may be handed off.

公开(公告)号：EP1192727A1

公开(公告)日：2002-04-03

申请号：EP00944992.7

申请日：2000-06-28

Applicant: QUALCOMM Incorporated

Inventor： HUGHES, Robbin, D. ,  WILLIAMSON, Paul, T.

IPC: H04B1/707

CPC classification number: H04B1/70754 ,  H04B1/7115

Abstract: Microprocessor resource utilization by a searching process is controlled by determining a search window size, accessing a lookup table to determine an integration interval and a number of non-coherent passes, and commanding a searching process to execute a multipath search according to these parameters. The lookup table comprises a plurality of integration intervals and corresponding number of non-coherent passes indexed according to search window such that an execution duration of the search process remains nominally constant over a variety of search window sizes.

公开(公告)号：EP0965235A2

公开(公告)日：1999-12-22

申请号：EP98909132.0

申请日：1998-03-04

Applicant: QUALCOMM INCORPORATED

Inventor： AULT, Jan, C. ,  HUGHES, Robbin, D. ,  SOLIMAN, Samir, S.

IPC: H04W28 ,  H04W48 ,  H04W88

CPC classification number: H04W48/18 ,  H04W88/06

Abstract: A wireless communication device (100) automatically and seamlessly switches to an alternate, available system when it is unable to complete a call origination attempt, without requiring the user to take any affirmative actions to select the alternate system or re-initiate a call origination. The wireless communication device (100) comprises a transceiver (104) and a processor (104). The transceiver (107) transmits and receives messages and signals. The processor (107) generates a first signaling message for transmission to a first communication system and generates a second signaling message for transmission to a second communication system if the transceiver does not receive an acknowledgement message from the first communication system. This decreases the percentage of call failures by providing a hold-over of pending call origination attempts until service is finally acquired. In the case of either exceeding the maximum number of access sequences (reverse link limited) or failure to acquire the forward link of the preferred communication system (forward link limited), the user is not required to re-initiate the call origination, thus turning a potential call failure into a success.