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    VARIABLE RATE FORWARD POWER CONTROL FOR MULTICHANNEL APPLICATIONS
    22.
    发明专利
    VARIABLE RATE FORWARD POWER CONTROL FOR MULTICHANNEL APPLICATIONS 未知

    公开(公告)号：CA2288310A1

    公开(公告)日：2000-06-08

    申请号：CA2288310

    申请日：1999-11-02

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BI QI ,  KAMEL RAAFAT EDWARD ,  RUBIN HARVEY

    IPC: H04B7/26 ,  H04B7/005 ,  H04W52/16 ,  H04W52/28 ,  H04W52/60 ,  H04Q7/36

    Abstract: Separate power control for the forward voice channel and forward data channel is provided without using additional bandwidth or decreasing the amount of pilot signal provided from the mobile to the base station. Alternating voice and data power control commands or information are transmitted in the pilot channel by a mobile to a base station. In one embodiment, the power control portion of a first pilot channel segment is used to provide power control for the forward voice channel and then in the following pilot channel segment, the power control portion is used to provide power control for the forward data channel. In other embodiments, other than a 50/50 mix between voice and data power control is provided in the mobile's pilot channel. For example, forward voice channel power control commands may be transmitted two or more times for each transmission of forward data channel power control commands.

    METHOD AND APPARATUS FOR ADAPTIVE SETTING OF INITIAL TRAFFIC POWER
    24.
    发明专利
    METHOD AND APPARATUS FOR ADAPTIVE SETTING OF INITIAL TRAFFIC POWER 未知

    公开(公告)号：CA2279677A1

    公开(公告)日：2000-03-21

    申请号：CA2279677

    申请日：1999-08-05

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： KAMEL RAAFAT EDWARD ,  KUO WEN-YI ,  MEYERS MARTIN HOWARD ,  WEAVER CARL FRANCIS

    IPC: H04B7/26 ,  H04B7/005 ,  H04W52/24 ,  H04W52/50 ,  H04Q7/36

    Abstract: A method and apparatus that permits base stations to adaptively set initial power levels in forward link traffic channels (i.e., base station to mobile unit) based on an interference measure, where the interference measure is the difference between the base station transmitted pilot E c/I o and the mobile unit received pilot E c/I o. The interference measure indicates how much interference is present from other base stations in the mobile unit's locale, mobile receiver noise and other similar sources. Call quality and system capacity are optimized since the initial power level is set in accordance with the interference environment. The method of the invention implements the adaptive setting by extracting the mobile unit received pilot E c/I o from the access message transmitted by the mobile unit. The interference measure is then determined and used by the base station to set the initial power level in the forward link traffic channel.

    25.
    发明专利
    未知

    公开(公告)号：DE60024373T2

    公开(公告)日：2006-07-13

    申请号：DE60024373

    申请日：2000-08-14

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： KAMEL RAAFAT EDWARD ,  KUO WEN-YI ,  WEAVER CARL FRANCIS ,  WU XIAO CHENG ,  MEYERS MARTIN HOWARD

    IPC: H04B7/26 ,  H04L1/00 ,  H04B7/005 ,  H04L1/08 ,  H04L1/20

    Abstract: A base station assembles a frame including information bits at a vocoding rate for downlink transmission over a traffic channel as channel bits at a channel rate. The base station places at least one rate-indicating bit at a beginning of the frame for indicating the vocoding rate. The mobile station evaluates the downlink transmission with consideration of the vocoding rate indicated by the at least one rate-indicating bit. The mobile station can determine the vocoding rate by decoding the beginning of the frame to permit power control in less than one frame duration from initial receipt of the frame at the mobile station.

    26.
    发明专利
    未知

    公开(公告)号：DE60024373D1

    公开(公告)日：2006-01-05

    申请号：DE60024373

    申请日：2000-08-14

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： KAMEL RAAFAT EDWARD ,  KUO WEN-YI ,  WEAVER CARL FRANCIS ,  WU XIAO CHENG ,  MEYERS MARTIN HOWARD

    IPC: H04B7/26 ,  H04B7/005 ,  H04L1/00 ,  H04L1/08 ,  H04L1/20

    Abstract: A base station assembles a frame including information bits at a vocoding rate for downlink transmission over a traffic channel as channel bits at a channel rate. The base station places at least one rate-indicating bit at a beginning of the frame for indicating the vocoding rate. The mobile station evaluates the downlink transmission with consideration of the vocoding rate indicated by the at least one rate-indicating bit. The mobile station can determine the vocoding rate by decoding the beginning of the frame to permit power control in less than one frame duration from initial receipt of the frame at the mobile station.

    27.
    发明专利
    未知

    公开(公告)号：DE69928347D1

    公开(公告)日：2005-12-22

    申请号：DE69928347

    申请日：1999-09-21

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： KAMEL RAAFAT EDWARD ,  MEYERS MARTIN HOWARD ,  SANDERS CHARLES ALBERT ,  WEAVER CARL FRANCIS

    IPC: H04B7/26 ,  H04W68/00 ,  H04Q7/38

    Abstract: A method and apparatus for arranging transmission of overhead messages on the paging channel of a wireless communications system is described. Certain paging channel slots are established, based on a timing reference, that must contain an overhead message. In the intervening slots or slot fragments, the base station transmits mobile-directed messages, when they are available. When no mobile directed messages are available for transmission, the base station selects an overhead message from a queue for transmission on the intervening paging channel slot or slot fragment.

    A METHOD FOR ADJUSTING THE TRANSMIT POWER LEVEL DURING SOFT HANDOFF IN WIRELESS COMMUNICATION SYSTEMS
    28.
    发明专利
    A METHOD FOR ADJUSTING THE TRANSMIT POWER LEVEL DURING SOFT HANDOFF IN WIRELESS COMMUNICATION SYSTEMS 未知

    公开(公告)号：CA2317517A1

    公开(公告)日：2001-03-15

    申请号：CA2317517

    申请日：2000-09-07

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： KAMEL RAAFAT EDWARD ,  WEAVER CARL FRANCIS ,  WU XIAO CHENG ,  MEYERS MARTIN HOWARD

    IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/12 ,  H04W52/36 ,  H04W52/40 ,  H04Q7/38

    Abstract: A base station (312, 314, 316, 612, 614, 616) in a soft handoff adjusts i ts transmit power level by a first amount if the base station (312, 314, 316, 612, 614, 616) is participating in a soft handoff and by a second amount if the base station (312, 314, 316, 612, 614, 616) is not participating in the soft handoff, i.e . in simplex mode. The first and second amounts are different. In one embodiment of the invention, the adjustment is performed by using a down-step size that is larger in magnitude than an up-step size when the base station (312, 314, 316, 612, 61 4, 616) is in soft handoff. The transmit power level is then adjusted by the smaller up and larger down step sizes when the base station (312, 314, 316, 612, 614, 616) receives an indication to adjust the transmit power level. The step sizes used when t he base station (312, 314, 316, 612, 614, 616) is in simplex mode is larger than the up-step size and smaller than the down step size. In another embodiment, when the ba se station (312, 314, 316, 612, 614, 616) is in soft handoff, the adjustment is performed by adjusting the transmit power level by the same step size as used during simplex mode when the base station (312, 314, 316, 612, 614, 616) receives an indication to adjust the transmit power level and then reducing the result by a reduction amount. The order of these two steps can be reversed, and the transmit power level c an be first reduced by the reduction amount and then adjusted by the same step siz es as used during simplex mode. The reduction amount has a magnitude greater than zero and smaller than the step size. The method of adjusting the base station transmit power level by different amounts based on whether the base station (312, 314 , 316, 612, 614, 616) participating in a soft handoff can be used with the method o f programming each base station (312, 314, 316, 612, 614, 616) in a soft hando ff with a threshold power level to constrain the power transmitted by the base stati on (312, 314, 316, 612, 614, 616) on the forward link. When the threshold power level is a minimum-threshold power level, each base station (312, 314, 316, 612, 614, 616) maintains its transmit power level at or above the minimum-threshold power level. When the threshold power level is a maximum-threshold power level, each ba se station (312, 314, 316, 612, 614, 616) maintains its transmit power level at or below the maximum-threshold power level. The threshold power level can be either a n adjustable or a fixed threshold power level.

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