公开(公告)号：BR9903623A

公开(公告)日：2000-08-29

申请号：BR9903623

申请日：1999-08-12

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHENG TERRY SI-FONG ,  HUANG CHING YAO ,  KOO YUEN-YIN ,  LIN SHEN-DE ,  WEAVER CARL F

IPC: H04B7/26 ,  H04W36/14 ,  H04Q7/36

Abstract: A procedure for triggering a handdown or a handoff a mobile station served by a base station of a cellular wireless communication system. A tolerable path loss for signal links between the base station and a mobile station located within the base station's cell, is initially determined. A control signal is radiated at a known transmit power level from the base station over its cell. A receive power level threshold is determined for the control signal for reception by the mobile station, according to the transmit power level and the tolerable path loss. A handoff of the mobile station is triggered after deriving the received power level of the control signal at the mobile station, and determining that the received power level is less than the receive power level threshold. In one embodiment, a mobile station reports to a serving base station only after the former determines that the received power level of a control signal from the base station is less than a threshold level initially provided to the mobile station by the base station. The procedure is applicable, e.g., to base station cells of a first CDMA cellular system which cells border on cells of an analog (AMPS) or a second CDMA cellular system.

公开(公告)号：AU4449499A

公开(公告)日：2000-03-09

申请号：AU4449499

申请日：1999-08-13

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHENG TERRY SI-FONG ,  WEAVER CARL F ,  LIN SHEN-DE ,  KOO YUEN-YIN ,  HUANG CHING YAO

IPC: H04B7/26 ,  H04W36/14 ,  H04Q7/30 ,  H04Q7/38 ,  H04B1/69

Abstract: A procedure for triggering a handdown or a handoff a mobile station served by a base station of a cellular wireless communication system. A tolerable path loss for signal links between the base station and a mobile station located within the base station's cell, is initially determined. A control signal is radiated at a known transmit power level from the base station over its cell. A receive power level threshold is determined for the control signal for reception by the mobile station, according to the transmit power level and the tolerable path loss. A handoff of the mobile station is triggered after deriving the received power level of the control signal at the mobile station, and determining that the received power level is less than the receive power level threshold. In one embodiment, a mobile station reports to a serving base station only after the former determines that the received power level of a control signal from the base station is less than a threshold level initially provided to the mobile station by the base station. The procedure is applicable, e.g., to base station cells of a first CDMA cellular system which cells border on cells of an analog (AMPS) or a second CDMA cellular system.

公开(公告)号：ID24114A

公开(公告)日：2000-07-06

申请号：ID990718

申请日：1999-07-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHENG TERRY SI-FONG ,  HUANG CHING YAO ,  KOO YUEN YIN ,  LIN SHEN-DE ,  WEAVER CARL F

IPC: H04B7/26 ,  H04W36/14 ,  H04Q7/00

Abstract: A procedure for triggering a handdown or a handoff a mobile station served by a base station of a cellular wireless communication system. A tolerable path loss for signal links between the base station and a mobile station located within the base station's cell, is initially determined. A control signal is radiated at a known transmit power level from the base station over its cell. A receive power level threshold is determined for the control signal for reception by the mobile station, according to the transmit power level and the tolerable path loss. A handoff of the mobile station is triggered after deriving the received power level of the control signal at the mobile station, and determining that the received power level is less than the receive power level threshold. In one embodiment, a mobile station reports to a serving base station only after the former determines that the received power level of a control signal from the base station is less than a threshold level initially provided to the mobile station by the base station. The procedure is applicable, e.g., to base station cells of a first CDMA cellular system which cells border on cells of an analog (AMPS) or a second CDMA cellular system.

公开(公告)号：CA2276804A1

公开(公告)日：2000-02-17

申请号：CA2276804

申请日：1999-07-05

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHENG TERRY SI-FONG ,  WEAVER CARL FRANCIS ,  LIN SHEN-DE ,  HUANG CHING YAO ,  KOO YUEN-YIN

IPC: H04B7/26 ,  H04W36/14 ,  H04Q7/38

Abstract: A procedure for triggering a handdown or a handoff a mobile station served by a base station of a cellular wireless communication system. A tolerable path loss for signal links between the base station and a mobile station located within the base station's cell, is initially determined. A control signal is radiated at a known transmit power level from the base station over its cell. A receive power level threshold is determined for the control signal for reception by the mobile station, according to the transmit power level and the tolerable path loss. A handoff of the mobile station is triggered after deriving the received power level of the control signal at the mobile station, and determining that the received power level is less than the receive power level threshold. In one embodiment, a mobile station reports to a serving base station only after the former determines that the received power level of a control signal from the base station is less than a threshold level initially provided to the mobile station by the base station. The procedure is applicable, e.g., to base station cells of a first CDMA cellular system which cells border on cells of an analog (AMPS) or a second CDMA cellular system.