公开(公告)号：AT394891T

公开(公告)日：2008-05-15

申请号：AT04778166

申请日：2004-07-12

Applicant: QUALCOMM INC

Inventor： CHEN TAO ,  ACHOUR BAAZIZ ,  BUTLER BRIAN ,  TIEDEMANN EDWARD ,  ZHANG HAITAO ,  SAINTS KEITH ,  BLESSENT LUCA ,  WEI YONGBIN

IPC: H04W72/14 ,  H04B7/005 ,  H04L12/18 ,  H04W4/06 ,  H04W52/08 ,  H04W52/32 ,  H04W52/54

Abstract: A dynamic shared forward link channel (or “data” channel) is used to send multicast data to a group of wireless devices, e.g., using a common long code mask for the data channel. Reference power control (PC) bits are also sent on the data channel and used for signal quality estimation. A shared forward link control channel is used to send user-specific signaling to individual wireless devices, e.g., using time division multiplexing (TDM) and a unique long code mask for each wireless device. A shared forward link indicator channel is used to send reverse link (RL) PC bits to the wireless devices, e.g., using TDM. The data channel is jointly power controlled by all wireless devices receiving the data channel. The control and indicator channels are individually power controlled by each wireless device such that the signaling and RL PC bits sent on these channels for the wireless device are reliably received.

公开(公告)号：AT379881T

公开(公告)日：2007-12-15

申请号：AT99941226

申请日：1999-08-17

Applicant: QUALCOMM INC

Inventor： LUNDBY STEIN ,  TIEDEMANN EDWARD ,  HOLTZMAN JACK ,  TERASAWA DAISUKE

IPC: H04B1/707 ,  H04B1/7097 ,  H04B7/005 ,  H04L27/26

Abstract: A method for limiting peak transmit power in a CDMA communication system by transmitting a first communication signal having a first high transmit power region, and transmitting a second communication signal having a second high transmit power region. A first and a second communication signal are time offset to prevent the first and second high transmit power regions from occurring simultaneously. Time shifting only a portion of the first and second communication signals is also taught. The first and second communication signals can also include respective first and second low transmit power regions. The time offset can be selected to align one of the first and second high transmit power regions with one of the first and second low transmit power regions. The total transmit power signal can be determined and the time offset can be selected to minimize a peak level of the total transmit power signal. The communication signals are separated into a plurality of portions and portions of the first and second communication signals are time offset to re-order the sequence of transmission of the plurality of portions.

公开(公告)号：HK1076941A1

公开(公告)日：2006-01-27

申请号：HK05108782

申请日：2005-10-04

Applicant: QUALCOMM INC

Inventor： SAIFUDDIN AHMED ,  SARKAR SANDIP ,  TIEDEMANN EDWARD

IPC: H04B20060101 ,  H04B7/005 ,  H04B7/26

Abstract: Controlling transmission energy in a variable rate communication system that gates out portions of a frame in a predetermined and predicable fashion. In particular, the present invention describes a method and apparatus which identifies closed loop power control commands that have been generated erroneously based on portions of a frame that have been gated. The identified power control commands are ignored. In an alternative embodiment, if identification of the erroneous power control commands occurs after response measures have been taken, the transmitting station responds by setting the transmission energy back to the state it would have been in had the erroneous power control commands been identified prior to the response.