公开(公告)号：EP2289193A1

公开(公告)日：2011-03-02

申请号：EP09763426.5

申请日：2009-06-09

Applicant: QUALCOMM Incorporated

Inventor： JOU, Yu-Cheun ,  BLACK, Peter, J. ,  ATTAR, Rashid Ahmed, Akbar

IPC: H04L1/00

CPC classification number: H04W52/44 ,  H04B2201/709709 ,  H04L1/0002 ,  H04L1/0025 ,  H04L1/0027 ,  H04L1/0029 ,  H04L1/0045 ,  H04L1/1607 ,  H04L1/1854 ,  H04L1/1887 ,  H04L2001/0092 ,  H04W52/58

Abstract: Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided. In an exemplary embodiment, a base station (BS) transmits power control groups (PCG's) for a frame over a forward link (FL) to a mobile station (MS) until accurate reception of the frame is acknowledged by the MS over a reverse link (RL), possibly before all PCG's of the frame are received over the FL. Possible ACK signaling methods are defined for channels associated with a cdma2000 wireless communications system. In another exemplary embodiment, techniques for reverse link early termination are also provided.

Abstract translation: 提高无线通信系统容量的技术。 在一方面，提供了在通信系统中发送的最小速率帧的系统非传输或“消隐”。 在示例性实施例中，cdma2000语音通信系统中的第八速率帧被系统地替换为具有零业务位的零速率帧。 然而，对于由例如声码器指定为“关键”的某些设备的传输进行了规定。 接收机检测到零速率或非零速率传输的存在，并相应地处理接收到的帧，包括仅响应于非空速率帧来更新外部环路功率控制。 提供了用于改变导频传输选通模式以辅助接收机检测零速率帧的其它技术。 在另一方面，提供了通过无线通信链路提前终止信号传输。 在示例性实施例中，基站（BS）通过前向链路（FL）向移动站（MS）发送用于帧的功率控制组（PCG），直到MS通过反向链路确认该帧的准确接收 （RL），可能在帧的所有PCG之前都被接收到FL。 针对与cdma2000无线通信系统相关的通道定义了可能的ACK信令方法。 在另一示例性实施例中，还提供了用于反向链路提前终止的技术。

公开(公告)号：EP1273198B1

公开(公告)日：2009-11-11

申请号：EP01926721.0

申请日：2001-04-05

Applicant: QUALCOMM INCORPORATED

Inventor： CHEN, Tao ,  JOU, Yu-Cheun

IPC: H04W36/08

CPC classification number: H04W36/0072 ,  H04W36/14

公开(公告)号：EP0897644B1

公开(公告)日：2005-12-28

申请号：EP98905048.9

申请日：1998-02-10

Applicant: QUALCOMM INCORPORATED

Inventor： TIEDEMANN, Edward, G., Jr. ,  LIN, Yu-Chuan ,  JOU, Yu-Cheun ,  ODENWALDER, Joseph, P.

IPC: H04Q7/22 ,  H04Q7/38 ,  H04B7/26

CPC classification number: H04W52/346 ,  H04B7/2659 ,  H04W28/18 ,  H04W28/22 ,  H04W36/18 ,  H04W52/281 ,  H04W52/34 ,  H04W52/343 ,  H04W72/06 ,  H04W72/1252 ,  H04W72/1273

公开(公告)号：EP1595422A2

公开(公告)日：2005-11-16

申请号：EP04712343.5

申请日：2004-02-18

Applicant: QUALCOMM INCORPORATED

Inventor： CHEN, Tao ,  LUNDBY, Stein A. ,  SARKAR, Sandip ,  JOU, Yu-Cheun

IPC: H04Q7/38

CPC classification number: H04W52/38 ,  H04W52/44

Abstract: Systems and methods for controlling the power level for a mobile station during periods when no data is being transmitted by the mobile station. In one embodiment, data is intermittently transmitted from a mobile station to a base station on a reverse-link traffic channel. When data is being transmitted on the traffic channel, the transmitted data is used by the base station to perform power control operations (e.g., incrementing or decrementing the mobile station's power level, based upon comparison of a received SNR to a target SNR). When no data is being transmitted on the traffic channel, a 'zero-rate indicator' is transmitted on the rate indicator channel. The zero-rate indicator is used by the base station to perform power control. Power control based on the zero-rate indicator may use velocity profiles, reliability metrics or other techniques to control adjustment of the power level.

公开(公告)号：EP0903051B1

公开(公告)日：2005-11-16

申请号：EP97928730.7

申请日：1997-05-28

Applicant: QUALCOMM INCORPORATED

Inventor： TIEDEMANN, Edward, G., Jr. ,  JOU, Yu-Cheun ,  ODENWALDER, Joseph, P.

IPC: H04Q7/38

CPC classification number: H04W28/18

Abstract: The present invention is a method and apparatus for transmitting high rate data packet in a CDMA communication system. The transmission system transmits a first channel assignment message indicating the at least one additional channel that will be used to support the high rate data packet. The first channel assignment message is sent in advance of the onset of high rate data communications. In addition the present invention provides within the first frame of high rate data a duplicate channel assignment message. A remote receiver uses the channel assignment messages to initialize its demodulation elements (114 and 120) to receive the additional information carried on the at least one additional channel.

公开(公告)号：EP0960547B1

公开(公告)日：2005-05-11

申请号：EP98907413.3

申请日：1998-02-10

Applicant: QUALCOMM Incorporated

Inventor： TIEDEMANN, Edward, G., Jr. ,  JOU, Yu-Cheun

IPC: H04Q7/38

CPC classification number: H04W36/38 ,  H04W36/18 ,  H04W52/40

Abstract: A method and apparatus for controlling the transmit power of a high rate code division multiple access (CDMA) link is described. The channel condition to a subscriber unit (30a, 30b, 30c) is evaluated and the configuration of a high rate link in soft handoff is based on the channel condition. If a fading channel is detected the supplemental channels (52) of the high rate link are transmitted from multiple base stations (32a, 32b). If a non-fading channel is detected the supplemental channels of the high rate link are transmitted from a single base station. Parameters monitored to determine the channel condition include the pilot strength, pilot code offset and error rate.

公开(公告)号：EP1415412A1

公开(公告)日：2004-05-06

申请号：EP02757072.0

申请日：2002-08-08

Applicant: Qualcomm Incorporated

Inventor： JOU, Yu-Cheun

IPC: H04B7/005

CPC classification number: H04W52/267 ,  H04L1/0002 ,  H04W52/24 ,  H04W52/282

Abstract: In a code division multiple access communication system (100), a method and an accompanying apparatus provide for an efficient control of a gain level of a communication channel at various mobility levels. A rate of change of a carrier to interference ratio (C/I) of a communication channel received at a receiver (400) is determined. The gain level of the communication channel may be based on the rate of change of the C/I of the communication channel. A mobility level of the communication channel may be compared to a low mobility threshold corresponding to a low mobility level. If the mobility level meets the low mobility threshold, the gain level of the communication channel may be based on the rate of change of the C/I of the communication channel.

公开(公告)号：EP1350411A2

公开(公告)日：2003-10-08

申请号：EP02714741.2

申请日：2002-01-10

Applicant: QUALCOMM INCORPORATED

Inventor： JOU, Yu-Cheun ,  WANG, Jun

IPC: H04Q7/38

CPC classification number: H04W68/00

Abstract: Method and apparatus for pseudo-synchronized paging to a mobile station in a wireless communication system. A number of paging repetitions is assigned, wherein a quick page message is repeatedly sent to a target mobile station for the number of paging repetitions. The number of paging repetitions is part of a paging instruction from a base station controller to a base station. The pseudo-synchronized method is used when the target mobile station is soft handoff.

公开(公告)号：EP1264420A2

公开(公告)日：2002-12-11

申请号：EP01914638.0

申请日：2001-03-02

Applicant: QUALCOMM INCORPORATED

Inventor： SARKAR, Sandip ,  JOU, Yu-Cheun ,  HOLTZMAN, Jack, M.

IPC: H04B7/005

CPC classification number: H04W52/286 ,  G01S11/10 ,  H04W52/146 ,  H04W52/282

Abstract: A method of modifying gain tables for the reverse-link communications in a cdma2000 wireless communication network includes the steps of estimating the velocity of a mobile station for a given frame error rate (FER) and data rate, and providing three gains to choose between based on the estimated velocity in order to specify a reverse-link transmit power level. The velocity estimation may be performed using a level crossing technique, a covariance approximation technique, or a Doppler spectrum estimation technique.

公开(公告)号：EP1254578A1

公开(公告)日：2002-11-06

申请号：EP01907185.1

申请日：2001-02-08

Applicant: QUALCOMM INCORPORATED

Inventor： JOU, Yu-Cheun ,  WANG, Jun ,  REZAIIFAR, Ramin ,  ACHOUR, Baaziz ,  CHEN, Tao

IPC: H04Q7/38

CPC classification number: H04W36/30 ,  H04W36/18

Abstract: A method and apparatus for generating an autonomous Pilot Strength Measurement Message (PSMM) by a mobile station traveling in a multi-carrier wireless communication system. In a multi-carrier system, the mobile station receives the pilot channel of a base station on multiple carrier frequencies simultaneously. Fading may vary from carrier frequency to carrier frequency. New pilot strength definitions are used by the mobile station in a set of rules transmitted by the base station. The set of rules determines autonomous generation and transmission of PSMMs by the mobile station upon detection of pilots.