公开(公告)号：NO992391L

公开(公告)日：1999-06-09

申请号：NO992391

申请日：1999-05-19

Applicant: QUALCOMM INC

Inventor： SAINTS KEITH W ,  CHEN TAO

IPC: H04B7/005 ,  H04B7/26

Abstract: The present invention provides a method and apparatus for providing improved quality or power control by recognizing the delays inherent in a closed-loop communication system. The mobile station or receiver properly adjusts its forward link quality or power level thresholds or measurements with which it compares incoming frames or portions thereof to reflect the level it anticipates receiving (after the delay). For example, the mobile station can recognize that at a given measurement time, two outstanding messages have not been executed by the transmitter (where each message indicates a corresponding increase of 1 dB). As a result, the mobile station can adjust its measurement threshold down by 2 dB to more closely correspond to future power adjustments. If the currently received frame or portion thereof is still below the readjusted threshold, then the mobile station sends out a new message to request a further increase in the forward link channel.

公开(公告)号：AU9118098A

公开(公告)日：1999-03-16

申请号：AU9118098

申请日：1998-08-24

Applicant: QUALCOMM INC

Inventor： SAINTS KEITH W ,  TIEDEMANN EDWARD G JR

IPC: H04B7/005 ,  H04B7/26

Abstract: The transmitted power of a mobile telephone is established by power control bits that are transmitted in a traffic channel from a base station and that are demodulated by a rake receiver in the telephone. The rake receiver includes a plurality of demodulators that demodulate respective fingers of the traffic channel which may be caused by multipath conditions, with the power control bits from each demodulator being combined with the power control bits of the other demodulators in the rake receiver regardless of whether the demodulators are in lock with their respective fingers. The combined power control signal from a rake receiver associated with a first base station is then tested against a threshold. If the combined power is at least equal to the threshold, the combined power control signal is sent to a logic combiner. If other base stations are communicating with the mobile telephone, the combined power control signal from each of these other base stations is also sent to the logic combiner. If any power control signal commands the mobile telephone to decrease its transmitted power, it does so; otherwise, it increases its transmitted power. Alternatively, the power control bits from each demodulator in a rake receiver can be blocked if the finger energy falls below a threshold that depends on the number of fingers from the associated base station.

公开(公告)号：CA2286842A1

公开(公告)日：1998-11-05

申请号：CA2286842

申请日：1998-04-16

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G JR ,  SAINTS KEITH W

IPC: C08L23/04 ,  C08L23/06 ,  C08L23/08 ,  C08L23/10 ,  C08L23/12 ,  C08L23/16 ,  H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/08 ,  H04W52/24 ,  H04W52/40

Abstract: A forward link power control mechanism in a remote station (6) measures reverse link power control bits which are transmitted by one or more base stations (4a, 4b, 4n) on a forward traffic channel (10a). At the remote station (6) the reverse link power control bits from multiple base stations (4a, 4b, 4n) or multiple signal paths are measured, combined, and filtered to yield an improved measurement of the forward link signal quality. The reverse link (12a, 12b) power control bits which are deemed unreliable are omitted from use in the power control loop. The remote station (6) generates a set of forward link power control bits in accordance with the measurements and transmits these bits to all base stations (4a, 4b, 4n) in communication with the remote station (6). Each base station (4a, 4b, 4n) adjusts its gain of the forward traffic channel (10a) in accordance to its measurement of the forward link power control bit. The gains of the forward traffic channels (10a) of the base stations (4a, 4b, 4n) are corrected periodically so that erroneous reception of the forward link power control bits by the base stations do not accumulate.

公开(公告)号：AU5606398A

公开(公告)日：1998-07-03

申请号：AU5606398

申请日：1997-12-11

Applicant: QUALCOMM INC

Inventor： ZEHAVI EPHRAIM ,  TIEDEMANN EDWARD G JR ,  SAINTS KEITH W

IPC: H04B7/005 ,  H04B7/26 ,  H04B14/04

Abstract: A subchannel within a CDMA signal is provided together with a system for receiving and decoding this subchannel. A message is transmitted over the subchannel by applying a sequence of phase rotations to the user data. A single subchannel message can be transmitted during each 1.25 ms segment of user data, resulting in a transmission rates of up to 800 messages per second over the subchannel. Each message corresponds to a fixed sequence of phases, called a phase codeword, used to rotate the user data each time that message is sent. When only two phase codewords are used, the effective data rate for the subchannel is 800 bits per second, but higher data rates may be achieved by increasing the number of codewords used by the subchannel. The subchannel may be decoded by correlating the user data with each of the possible phase codewords.

公开(公告)号：ZA9711167B

公开(公告)日：1998-06-15

申请号：ZA9711167

申请日：1997-12-11

Applicant: QUALCOMM INC

Inventor： ZEHAVI EPHRAIM ,  SAINTS KEITH W ,  TIEDEMANN JR EDWARD G

IPC: H04B7/005 ,  H04B7/26 ,  H04B14/04 ,  H04Q ,  H04L ,  H04B ,  H03H

Abstract: A subchannel within a CDMA signal is provided together with a system for receiving and decoding this subchannel. A message is transmitted over the subchannel by applying a sequence of phase rotations to the user data. A single subchannel message can be transmitted during each 1.25 ms segment of user data, resulting in a transmission rates of up to 800 messages per second over the subchannel. Each message corresponds to a fixed sequence of phases, called a phase codeword, used to rotate the user data each time that message is sent. When only two phase codewords are used, the effective data rate for the subchannel is 800 bits per second, but higher data rates may be achieved by increasing the number of codewords used by the subchannel. The subchannel may be decoded by correlating the user data with each of the possible phase codewords.

公开(公告)号：WO2010039586A3

公开(公告)日：2010-05-27

申请号：PCT/US2009058269

申请日：2009-09-24

Applicant: QUALCOMM INC ,  SAINTS KEITH W ,  GAAL PETER ,  LEUNG GILBERT

Inventor： SAINTS KEITH W ,  GAAL PETER ,  LEUNG GILBERT

IPC: H04L25/03

CPC classification number: H04L25/0328 ,  H04L25/03044

Abstract: An apparatus for reducing interference of a signal over a plurality of stages includes a processor configured to determine at least two equalizer taps based on at least one of a covariance and a channel impulse response of the signal. The processor is further configured to estimate at least one additional equalizer tap based on the at least two equalizer taps. In addition, the processor is configured to reduce, for each of the plurality of stages, the interference of the signal for that stage using an equalizer tap from either the at least two equalizer taps or the at least one additional equalizer tap, so that the signal for the next stage in the plurality of stages has the reduced interference. A method is also provided for reducing interference of a signal over a plurality of stages.

Abstract translation: 一种用于减少多个级上的信号的干扰的设备包括处理器，该处理器被配置为基于信号的协方差和信道脉冲响应中的至少一个来确定至少两个均衡器抽头。 处理器还被配置为基于至少两个均衡器抽头来估计至少一个附加均衡器抽头。 此外，处理器被配置为使用来自至少两个均衡器抽头或至少一个附加均衡器抽头的均衡器抽头来减少对于多个​​级中的每个级的该级的信号的干扰，使得 用于多个级中的下一级的信号具有减小的干扰。 还提供了一种用于减少信号在多个级上的干扰的方法。

公开(公告)号：WO9957849A2

公开(公告)日：1999-11-11

申请号：PCT/US9909419

申请日：1999-04-30

Applicant: QUALCOMM INC

Inventor： CHEN TAO ,  TIEDEMANN EDWARD G JR ,  SAINTS KEITH W ,  GLAUSER OLIVIER

IPC: H04L12/00 ,  H04W36/14 ,  H04W36/38

CPC classification number: H04W36/0083 ,  H04L1/0045 ,  H04W8/005 ,  H04W24/10 ,  H04W28/06 ,  H04W36/06 ,  H04W36/14 ,  H04W36/38 ,  H04W52/44

Abstract: A method and apparatus for coordinating the time at which a mobile station (5) performs searches for alternative systems to which a hard handoff will occur. In one system which includes the present invention, the mobile station (5) receives a command which instructs the mobile station (5) as to when to tune to alternative frequencies in order to search for indications of the presence of an alternative system. In another system which includes the present invention, predetermined times are defined with respect to a reference point in time that is common to both an origination base station (10) and a mobile station (5). The mobile station (5) tunes to alternative frequencies to perform searches only during these predetermined times. In addition, the mobile station (5) coordinates the transmission of reports which indicate the results of searches for alternative systems such that these reports are only transmitted from the mobile station (5) when the mobile station (5) is tuned to the origination frequency.

Abstract translation: 一种用于协调移动台（5）执行搜索要发生硬切换的替代系统的时间的方法和装置。 在包括本发明的一个系统中，移动台（5）接收指令移动台（5）何时调谐到替代频率以便搜索替代系统的存在的指示的命令。 在包括本发明的另一系统中，对于起始基站（10）和移动站（5）两者共同的参考时间点来定义预定时间。 移动台（5）调谐到替代频率，以在这些预定时间内执行搜索。 此外，移动台（5）协调报告的传输，其指示替代系统的搜索结果，使得当移动台（5）被调谐到发起频率时，这些报告仅从移动台（5）发送 。

公开(公告)号：WO9823044A3

公开(公告)日：1998-08-20

申请号：PCT/US9720751

申请日：1997-11-13

Applicant: SAINTS KEITH W ,  CHEN TAO ,  QUALCOMM INC

Inventor： SAINTS KEITH W ,  CHEN TAO

IPC: H04B7/005 ,  H04B7/26

CPC classification number: H04W52/223 ,  H04W52/08 ,  H04W52/12 ,  H04W52/20 ,  H04W52/221

Abstract: The present invention provides a method and apparatus for providing improved quality or power control by recognizing the delays inherent in a closed-loop communication system. The mobile station (12) or receiver properly adjusts its forward link quality or power level thresholds or measurements with which it compares incoming frames or portions thereof to reflect the level it anticipates receiving (after the delay). For example, the mobile station (12) can recognize that at a given measurement time, two outstanding messages have not been executed by the transmitter (where each message indicates a corresponding increase of 1 dB). As a result, the mobile station (12) can adjust its measurement threshold down by 2 dB to more closely correspond to future power adjustments. If the currently received frame or portion thereof is still below the readjusted threshold, then the mobile station (12) sends out a new message to request a further increase in the forward link channel.