公开(公告)号：EP1198965B1

公开(公告)日：2005-09-07

申请号：EP00950522.3

申请日：2000-07-20

Applicant: QUALCOMM INCORPORATED

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

IPC: H04Q7/38

CPC classification number: H04L1/20 ,  H01L23/53295 ,  H01L24/02 ,  H01L2924/01004 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01027 ,  H01L2924/01033 ,  H01L2924/01067 ,  H01L2924/01074 ,  H01L2924/01075 ,  H04B17/26 ,  H04B17/318 ,  H04B17/327 ,  H04B17/336 ,  H04L1/201 ,  H04W36/08 ,  H04W48/20 ,  H04W52/0216 ,  H04W52/0245 ,  H04W72/08 ,  H04W88/02 ,  Y02D70/25

Abstract: A method and apparatus for supervising a dedicated control channel when in the discontinuous transmission mode. The mobile station (4) receives a pilot strength measurement for each pilot signal contained in an active set of base stations and an aggregate of the pilot strength measurements is determined. An average for the aggregate is determined over a selected time interval and the remote station transmitter is disabled if said average is below a threshold for a designated time (T1). The received transmission may be deemed terminated if the average is below the threshold for a second designated time (T2), where T2 > T1.

公开(公告)号：EP1198900A1

公开(公告)日：2002-04-24

申请号：EP00950429.1

申请日：2000-07-18

Applicant: QUALCOMM INCORPORATED

Inventor： JOU, Yu-Cheun ,  SAIFUDDIN, Ahmed ,  TIEDEMANN, Edward, G., Jr. ,  BUTLER, Brian, K.

IPC: H04B7/005 ,  H04B1/707

CPC classification number: H04W52/54 ,  H04B2201/70703 ,  H04W52/44

Abstract: The present invention is a novel and improved method and system for communicating a frame of information according to a discontinuous transmit format. In particular, the present invention describes a method of transmitting eighth rate speech or data frames employing transmit gating and energy scaling which simultaneously reduces the battery usage of a variable rate wireless communication device (50), increases the capacity of the reverse link and provides reliable communication of the eighth rate frames. In the present invention, four methods are presented for transmitting an eighth rate data frame in which half of the frame is gated out and the remaining data is transmitted at nominal transmission energy to accomplish the aforementioned goals.

Abstract translation: 本发明是一种用于根据不连续发送格式传送信息帧的新颖和改进的方法和系统。 特别地，本发明描述了一种使用发射门控和能量缩放发送第八速率语音或数据帧的方法，该方法同时降低了可变速率无线通信设备（50）的电池使用量，增加了反向链路的容量并提供了可靠的 第八速率帧的通信。 在本发明中，提供了四种方法用于发送第八速率数据帧，其中帧的一半被门控，剩余数据以标称传输能量传输，以实现上述目标。

公开(公告)号：EP1173962A1

公开(公告)日：2002-01-23

申请号：EP00926219.7

申请日：2000-04-21

Applicant: QUALCOMM Incorporated

Inventor： JOU, Yu-Cheun

IPC: H04L27/26 ,  H04J1/06

CPC classification number: H04L5/005 ,  H04L5/0021 ,  H04L5/0053 ,  H04L5/0064 ,  H04L27/262 ,  H04L27/2657

Abstract: A method and apparatus for transmitting broadcast information in a multi-carrier communication system. The Sync Channel of the multi-carrier system is transmitted a 1.25 MHz channel bandwidth (i.e., over a single carrier), and to specify the preferred channels for the Sync Channel transmission instead of the preferred channels for the entire multi-carrier system. The Sync Channel Message will carry the additional information to indicating the center frequency of a multi-carrier system within a reserved set of frequency bands and indicating the frequency of a single carrier system in the reserved set of frequency bands. Considering the A block of the PCS band again, the preferred channels for Sync Channel transmission can be selected as channels 75, 150 and 225. This selection ensures that one of the preferred channels will always be used by any multi-carrier system regardless of the location of its center channel.

公开(公告)号：EP1166583A1

公开(公告)日：2002-01-02

申请号：EP00916557.2

申请日：2000-03-20

Applicant: QUALCOMM Incorporated

Inventor： JOU, Yu-Cheun

IPC: H04Q7/38

CPC classification number: H04W68/00 ,  H04W52/0216 ,  H04W52/0219

Abstract: A mobile station operating in the slotted mode, while monitoring the Quick Paging Channel, monitors the Paging Channel in its assigned slot at least once every N minutes, regardless of what the Quick Paging Channel indicates for that slot. The mobile station shall keep a counter for the number of false alarms that have occurred and another counter for the number misses that have occurred. The count of accumulated false alarms (QPCH_FA) and the count of accumulated misses (QPCH_MISS) are stored by the mobile station and will be sent to the base station when so requested. These two counters can be reset at powering-up or by the base station via messaging, or both. When the number of accumulated misses in a given time interval T1 exceeds a certain threshold Nm1, the mobile station may send a message to inform the base station of this. When the number of accumulated misses in a given time interval T2 exceeds a threshold Nm2, the mobile station shall monitor the Paging Channel in its assigned slots regardless of what the Quick Paging Channel indicates. T2 and Nm2 could be the same as or different from T1 and Nm1, respectively. The mobile station returns to follow the Quick Paging Channel indication as to whether to monitor the Paging Channel or not when the number of accumulated misses in a given time interval T3 drops below a certain threshold Nm3, or when Nh1 hits occur in a row, or both.

Abstract translation: 一种移动台，在开槽模式操作，同时监测快速寻呼信道，监视在其分配的时隙的寻呼信道至少每N分钟，无论什么样的快速寻呼信道指示用于该时隙。 该移动站应当保留一个计数器虚假警报发生thathave的人数为失误发生thathave数量和另一个柜台。 累计错误警报（QPCH_FA）和累计未命中（QPCH_MISS）的计数的计数是由移动台存储并当如此请求将被发送到基站。 这两个计数器可以在经由消息，或这两者加电或由基站进行重置。 当积累的未命中在给定的时间间隔T1的数量超过某一阈值转速Nm1，移动站可以发送消息，以通知该基站。 当积累的未命中在给定的时间间隔T2的数目超过阈值转速Nm2，移动台将无论什么样的快速寻呼信道指示在监视其被分配的时隙的寻呼信道。 T2和Nm2是可以是相同的或不同T1和M1，分别。 移动台返回到跟随快速寻呼信道指示关于是否以监视寻呼信道或不当T3积累未命中的在给定时间间隔的数量下降到低于某一阈值标准立方米，或当NH1命中连续发生，或者 两者。

公开(公告)号：EP1016299A1

公开(公告)日：2000-07-05

申请号：EP98905064.6

申请日：1998-02-13

Applicant: QUALCOMM INCORPORATED

Inventor： WILLENEGGER, Serge ,  JOU, Yu-Cheun

IPC: H04Q7/38 ,  H04Q7/22

CPC classification number: H04W52/288 ,  H04W52/08 ,  H04W52/42

Abstract: A power control subsystem (100) for a remote station (1) which transmits a reverse link signal comprising a plurality of subchannel signals, the power control subsystem comprising a receiver (210) and plural gain adjusters (140A, 140B, 140N). The receiver (210) is arranged to receive a power control message and to provide a plurality of gain values based on said power control message. Each of said gain adjusters is arranged to receive a corresponding subchannel signal and a corresponding gain value and to adjust the gain of said subchannel signal in accordance with said gain value, whereby the transmit power of each said subchannel signal can be independently adjusted based upon a received power control message. Thus, when a transmitting station (2) generates a channel made up of a sum of subchannels, each subchannel or group of subchannels is amplified with a unique gain value that is varied in accordance with subchannel power control messages. The subchannel power control messages are generated subsequent to monitoring and calculating metrics based on that received subchannel.

公开(公告)号：EP1016234A1

公开(公告)日：2000-07-05

申请号：EP98949354.9

申请日：1998-09-16

Applicant: QUALCOMM Incorporated

Inventor： JOU, Yu-Cheun

IPC: H04J11/00 ,  H04J13/02 ,  H04L27/26 ,  H04L5/02 ,  H04L25/03

CPC classification number: H04L5/0017 ,  H04B1/707 ,  H04J13/0048 ,  H04L1/0059 ,  H04L1/0071 ,  H04L5/0021 ,  H04L5/0046 ,  H04L5/0064 ,  H04L25/03866

Abstract: A method of an apparatus for transmitting data in a multiple carrier system comprises encoding data and dividing the resulting encoded symbols for transmission on different frequencies. The transmitter comprises a control processor (50) for determining the capacity of each of a plurality of channels and selecting a data rate for each channel depending on the determined capacity. A plurality of transmission subsystems (56 to 72) are responsive to the control processor (50). Each transmission subsystem is associated with a respective one of the plurality of channels for scrambling encoded data with codes unique to the channel for transmission in the channel. A variable demultiplexer (56) under the control of the control processor (50) demultiplexes the encoded data into the plurality of transmission subsystems at a demultiplexing rate derived from the data rates selected for the channels by the controller. In one embodiment of the transmission subsystems, the encoded symbols are provided to a symbol repetition unit (58) which keeps the symbol rate of data to be transmitted fixed. In another embodiment, no symbol repetition is provided and variable length Walsh sequences are used to handle data rate variations.

公开(公告)号：EP0897644A2

公开(公告)日：1999-02-24

申请号：EP98905048.0

申请日：1998-02-10

Applicant: QUALCOMM INCORPORATED

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

IPC: H04L29 ,  H04B7 ,  H04W28 ,  H04W52 ,  H04W72

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

Abstract: In a communication system capable of variable rate transmission, scheduling of high speed data transmission improves utilization of the forward link and decreases the transmission delay in data communication. Each remote station (6) is assigned one primary code channel for the duration of the communication with a cell. Secondary code channels of various types and transmission capabilities can be assigned by a channel scheduler (12) for scheduled transmission of data traffic at high rates. Secondary code channels are assigned in accordance with a set of system goals, a list of parameters, and collected information on the status of the communication network. Secondary code channels can be grouped into sets of secondary code channels. Data is partitioned in data frames and transmitted over the primary and secondary code channels which have been assigned to the scheduled user.

公开(公告)号：EP2443756B1

公开(公告)日：2018-04-04

申请号：EP10739421.5

申请日：2010-06-15

Applicant: QUALCOMM Incorporated

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

IPC: H04B1/707

CPC classification number: H04B1/7107 ,  H04B1/71075 ,  H04B2201/70701 ,  H04L25/0224 ,  H04W52/12

Abstract: Techniques for generalized pilot interference cancellation in a communications receiver. In an exemplary embodiment, a residual pilot is cancelled from a post-traffic cancellation signal following initial first-pass pilot cancellation. Residual pilot cancellation is achieved by adding the first-pass cancelled pilot as earlier stored in memory back to the post-traffic cancellation signal, and pilot filtering the resulting signal to generate an improved pilot interference estimate. In an alternative exemplary embodiment, an arbitrary number of iterations may be applied to generate the pilot interference estimate by successively storing each generated pilot interference estimate in memory.

公开(公告)号：EP2245780B8

公开(公告)日：2013-12-18

申请号：EP09712141.2

申请日：2009-02-20

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/16 ,  H04L1/00

CPC classification number: H04L1/1671 ,  H04L1/0025 ,  H04L1/1854 ,  H04W28/08 ,  H04W52/12 ,  H04W52/44 ,  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.

公开(公告)号：EP2481178A2

公开(公告)日：2012-08-01

申请号：EP10768306.2

申请日：2010-09-21

Applicant: Qualcomm Incorporated

Inventor： BLACK, Peter, J. ,  LOTT, Christopher, G. ,  ATTAR, Rashid, A. ,  JOU, Yu-Cheun ,  MA, Jun

IPC: H04L1/00

CPC classification number: H04W52/54 ,  H04B1/7107 ,  H04B1/71072 ,  H04L1/0048 ,  H04L1/0052 ,  H04L25/03006 ,  H04W36/18 ,  H04W52/08 ,  H04W52/12 ,  H04W52/362 ,  H04W52/40

Abstract: Techniques for improving the capacity of a wireless communications system using interference cancellation (IC). In an early decoding and IC aspect, a frame transmitted from a user to a base station may be decoded prior to the entire frame being received by the base station. The remaining portion of the frame may then be re-constructed at the base station prior to its reception, and cancelled from the receive signal to reduce the interference to frames received from other users. In a power control aspect for early decoding and IC, the power control target level at a local base station may be adjusted in response to successfully early decoding a frame, without affecting the overall outer loop power control operation. Further aspects include late decoding techniques for utilizing the IC of other users' signals to improve the probability of decoding a given user's frames, as well as techniques for traffic channel demodulation using channel re-estimation.