公开(公告)号：EP1252778A2

公开(公告)日：2002-10-30

申请号：EP01905144.0

申请日：2001-01-26

Applicant: QUALCOMM INCORPORATED

Inventor： JOU, Yu-Cheun

IPC: H04Q7/22

CPC classification number: H04W72/005 ,  H04W4/14 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0258

Abstract: A system for accessing broadcast SMS messages over a wireless communication system. A base station transmits SMS messages periodically and aperiodically over a broadcast channel. The base station allocates periodic slots in the broadcast channel for each of the subscriber services providing the SMS messages and transmits slot parameters to mobile units. Using the slot parameter information, the mobile units periodically wake up to scan the broadcast channel. The period for each category of broadcast SMS messages may be different and the period may apply to a single broadcast channel. Messages arriving aperiodically can be queued and transmitted in pre-scheduled broadcast channel frames. Messages with inter-arrival interval greater than the specified transmission period are simply repeated.

Abstract translation: 一种用于通过无线通信系统访问广播SMS消息的系统。 基站通过广播信道周期性地和非周期地发送SMS消息。 基站在广播信道中为每个提供SMS消息的用户业务分配周期时隙，并向移动单元发送时隙参数。 使用时隙参数信息，移动单元周期性地唤醒以扫描广播信道。 每个类别的广播SMS消息的周期可以不同，并且该周期可以应用于单个广播信道。 不定时到达的消息可以排队并在预先安排的广播信道帧中传输。 具有大于指定传输周期的到达间隔间隔的消息被简单地重复。

公开(公告)号：EP1240724A1

公开(公告)日：2002-09-18

申请号：EP00989412.2

申请日：2000-12-21

Applicant: QUALCOMM INCORPORATED

Inventor： JOU, Yu-Cheun

IPC: H04B1/707 ,  H04Q7/32 ,  H04L5/02

CPC classification number: H04W48/16 ,  H04B1/70754 ,  H04B1/7077 ,  H04B1/70775 ,  H04B2201/70701 ,  H04B2201/70707 ,  H04L5/026

Abstract: A method and apparatus to search for a traffic channel in a multi-carrier spread spectrum communication network. In this first embodiment, all three pilot signals are transmitted with equal power from the base station. The remote station can noncoherently combine the received energy of all three pilots on a time hypothesis. This will reduce the value of M (the noncoherent accumulation time) by a factor of three. Thus the mean acquisition time is shortened by a factor of three with the same probability of detection and false alarm as a signal carrier (1X) system, if each pilot is equivalent to a 1X pilot in power. Note that the number of operations (i.e., complexity) is the same as that for a 1X system, but the time elapsed is shortened by a factor of 3.

公开(公告)号：EP1155591A1

公开(公告)日：2001-11-21

申请号：EP00913612.8

申请日：2000-02-25

Applicant: QUALCOMM Incorporated

Inventor： TIEDEMANN, Edward, G., Jr. ,  TERASAWA, Daisuke ,  SHANBHAG, Abhijit, G. ,  JOU, Yu-Cheun ,  ODENWALDER, Joseph, P. ,  WILLENEGGER, Serge ,  SARKAR, Sandip

IPC: H04Q7/38

CPC classification number: H04W56/002 ,  H04B2201/70701 ,  H04B2201/709709 ,  H04J3/0638 ,  H04J3/0682 ,  H04J13/0048 ,  H04J13/18 ,  H04W48/12

Abstract: A method and system for generating forward link channels in a synchronous CDMA base station having a pilot pseudonoise (PN) sequence with a pilot PN sequence offset. In one embodiment, the method includes the steps of generating a sync channel (302) including a sync channel message; generating an identification channel including at least the pilot PN sequence offset; and orthogonalizing the sync channel and the identification channel. The identification channel and the sync channel are both transmitted. However, the mobile station may get the pilot PN offset from the identification channel quickly, rather than having to demodulate the entire sync channel message. The identification channel may further include an indication of the phase of the pilot PN sequence, and the epoch of the pilot PN sequence. In one embodiment, the method includes encoding the identification channel using a Golay code.

公开(公告)号：EP1123586A1

公开(公告)日：2001-08-16

申请号：EP99956605.2

申请日：1999-10-18

Applicant: QUALCOMM Incorporated

Inventor： TERASAWA, Daisuke ,  AGRAWAL, Avneesh ,  JOU, Yu-Cheun ,  HARMS, Brian ,  BUTLER, Brian, K.

IPC: H04B1/707 ,  H04J13/00

CPC classification number: H04J13/0022 ,  H04B1/707 ,  H04J13/10

Abstract: Method for PN spreading a SCMA signal using a truncated PN sequence. Method for generating said truncated PN sequence. Method for generating a second truncated PN sequence by masking the first truncated sequence. A method for generating a phase shifted version of a truncated PN sequence.

公开(公告)号：EP0960547A2

公开(公告)日：1999-12-01

申请号：EP98907413.0

申请日：1998-02-10

Applicant: QUALCOMM INCORPORATED

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

IPC: H04B7 ,  H04W36 ,  H04W52

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：EP0956661A1

公开(公告)日：1999-11-17

申请号：EP98903591.0

申请日：1998-01-27

Applicant: QUALCOMM INCORPORATED

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

IPC: H04B1 ,  H04B7 ,  H04W52

CPC classification number: H04W52/146 ,  H04W52/16 ,  H04W52/20 ,  H04W52/325

Abstract: A novel and improved method for performing transmit power control is described. A signal is transmitted at a transmit power and includes a traffic channel transmitted at a traffic channel transmit power, and a pilot channel transmitting at a pilot channel (70) transmit power. The receive energy of the pilot channel is measured, and a decrease power control command (121) is generated when the receive energy is greater than a receive energy threshold. If the receive energy is less than the receive energy threshold, an increase power control command (121) is generated. The power control command (121) is transmitted to the system generating the signal.

Abstract translation: 描述了一种用于在反向链路上执行发射功率控制的新颖和改进的方法。 以发射功率发送信号，包括以业务信道发送功率发送的业务信道，以及在导频信道（70）发送的导频信道发送功率。 测量导频信道的接收能量，当接收能量大于接收能量阈值时，产生降低功率控制命令（121）。 如果接收能量小于接收能量阈值，则生成增加功率控制命令（121）。 功率控制命令（121）被发送到产生信号的系统。