公开(公告)号：JP2002185994A

公开(公告)日：2002-06-28

申请号：JP2001311454

申请日：2001-10-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： QI BI ,  KAMEL RAAFAT E ,  YUEN-YIN KOO L ,  PITTAMPALLI ESHWAR ,  THOMAS MATHEW

IPC: H04W36/18 ,  H04W36/30 ,  H04Q7/22

Abstract: PROBLEM TO BE SOLVED: To provide a method for permitting an MS(mobile station) to automatically resume a call when the MS loses communications with a base station(BS). SOLUTION: The MS monitors signals from other BSs while it communicates with a BS. The signals are measured and the strength of the signals received from BSs in the reception-possible area of the MS is decided. When MS loses a traffic channel being used for communicating voice or data with the BS, the MS tries a contact with another BS. The BS that the MS selects to contact has the strongest signal which the MS monitored previously. When the MS makes contact with the new BS, the MS requests a hand-off from the BSs with which contact is lost to another BS supplying communication services to the MS. New traffic channels are allocated to the MS with BSs on the basis of the MS request and the measurement value of the signal strength of other BSs which were included in the hand-off request of the MS.

公开(公告)号：DE602005000378D1

公开(公告)日：2007-02-08

申请号：DE602005000378

申请日：2005-09-01

Applicant: LUCENT TECHNOLOGIES INC

Inventor： YANG YANG ,  QI BI ,  LILY HL ZHU

IPC: H04B17/00

Abstract: A method for determining rise over thermal for a base station in a wireless communications system is provided. The method comprises receiving a first and second diversity signal, measuring the signal strength of the first and second diversity signals, and estimating the noise floor for the first and second diversity signals. The signal strength rise is determined for the first and second diversity signals based on the measured signal strength and estimated noise floor of the first and second diversity signals respectively. The rise over thermal is then determined based on the determined signal strength rise of the first and second diversity signals.

公开(公告)号：DE602005000378T2

公开(公告)日：2007-10-18

申请号：DE602005000378

申请日：2005-09-01

Applicant: LUCENT TECHNOLOGIES INC

Inventor： YANG YANG ,  QI BI ,  LILY HL ZHU

IPC: H04B17/00

Abstract: A method for determining rise over thermal for a base station in a wireless communications system is provided. The method comprises receiving a first and second diversity signal, measuring the signal strength of the first and second diversity signals, and estimating the noise floor for the first and second diversity signals. The signal strength rise is determined for the first and second diversity signals based on the measured signal strength and estimated noise floor of the first and second diversity signals respectively. The rise over thermal is then determined based on the determined signal strength rise of the first and second diversity signals.

公开(公告)号：DE602005002001T2

公开(公告)日：2008-05-08

申请号：DE602005002001

申请日：2005-09-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： QI BI ,  DONGZHE CUI ,  QINQING ZHANG

IPC: H04L1/20 ,  H04B7/005

Abstract: Data communication includes an estimate of packet error rate that is useful, for example, when there is insufficient data transmission to provide a direct measurement of packet error rate. At least one pilot channel output provides a basis to determine an estimated packet error rate. One example includes using a pilot channel ratio of an energy-per-chip to a noise spectrum density. Another example includes using a pilot symbol error rate from the pilot channel as the basis for determining the traffic channel packet error rate.

公开(公告)号：DE602005002001D1

公开(公告)日：2007-09-27

申请号：DE602005002001

申请日：2005-09-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： QI BI ,  DONGZHE CUI ,  ZHANG QINQING

IPC: H04L1/20 ,  H04B7/005

Abstract: Data communication includes an estimate of packet error rate that is useful, for example, when there is insufficient data transmission to provide a direct measurement of packet error rate. At least one pilot channel output provides a basis to determine an estimated packet error rate. One example includes using a pilot channel ratio of an energy-per-chip to a noise spectrum density. Another example includes using a pilot symbol error rate from the pilot channel as the basis for determining the traffic channel packet error rate.