公开(公告)号：JPH11252641A

公开(公告)日：1999-09-17

申请号：JP35528098

申请日：1998-12-15

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BI QI ,  KUO WEN-YI ,  MEYERS MARTIN HOWARD ,  SANDERS CHARLES ALBERT ,  WEAVER CARL FRANCIS

IPC: H04W16/00 ,  H04W16/24 ,  H04W36/18 ,  H04Q7/36 ,  H04J13/00

Abstract: PROBLEM TO BE SOLVED: To appropriately reduce areas having many main pilots by performing transmission from a transmitter-receiver component by transferring a link signal of an adjacent sector that is related to an adjacent base station to send a signal between the transmitter-receiver component and the adjacent base station. SOLUTION: A simultaneous broadcasting component or an omnidirectional cell is inserted into a high density area of many main pilots. When local signal intensity from the simultaneous broadcasting component or the omnidirectional cell is increased, the number of main pilots at each geographical place is decreased. The simultaneous broadcasting component is a repeater in itself, the repeater sends a forward link signal acquired from a base station 14 and receives a backward link signal from a mobile station 20. Either a cable or radio can be applied as a communication link between the simultaneous broadcasting component or the omnidirectional cell and the station 14.

公开(公告)号：JP2001111479A

公开(公告)日：2001-04-20

申请号：JP2000255257

申请日：2000-08-25

Applicant: LUCENT TECHNOLOGIES INC

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

IPC: H04B7/26 ,  H04L1/00

Abstract: PROBLEM TO BE SOLVED: To reinforce a power control ability by deciding a vocoding rate before receiving the sequence of a downward frame or an interleaving frame. SOLUTION: In a base station 14, one frame is organized, which includes an information bit in the vocoding rate as a channel bit in one channel rate, in order to transmit a downward signal on a traffic channel and at least one rate indicating bit which expresses the vocoding rate is arranged in the head part of the frame. In a mobile station 16, downward transmission power is calculated by taking the vocoding rate expressed by at least one rate indicating bit in consideration and the vocoding rate is decided by decoding the head part of the frame so that power control is executed in a period being shorter than one frame from the repetition of the first frame.

公开(公告)号：JP2000316192A

公开(公告)日：2000-11-14

申请号：JP2000104828

申请日：2000-04-06

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHEN TSAO-TSEN ,  KUO WEN-YI ,  MEYERS MARTIN HOWARD

IPC: H04W72/08 ,  H04W36/18 ,  H04W74/02 ,  H04Q7/38 ,  H04J13/00

Abstract: PROBLEM TO BE SOLVED: To improve a burst control method of a CDMA system. SOLUTION: An MS(mobile station) detects relative signal strength received from a BTS(base transceiver station) in an active set (the set of the BTS which can be connected with the MS). A limited active set (sub-set) constituted of the BTS which can service the MS in the active set is prepared. Then, the geometry of each sub-set is decided, and power adjustment (the difference of power for bits) is calculated for each sub-set by using the geometry. Then, an available data rate is decided for each sub-set by using the power adjustment and available power of the BTS in the sub-set. The minimum value of the data rates of all the BTS in the sub-set is selected as the available data rate of the subset. The maximum value of the available data rates of all the sub-sets is selected as the data rate of the MS.

公开(公告)号：JP2001148881A

公开(公告)日：2001-05-29

申请号：JP2000279008

申请日：2000-09-14

Applicant: LUCENT TECHNOLOGIES INC

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

IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/12 ,  H04W52/36 ,  H04W52/40 ,  H04Q7/36 ,  H04J13/00 ,  H04Q7/22

Abstract: PROBLEM TO BE SOLVED: To provide a soft hand-off in a wireless communication system that can control power at a high-speed while reducing a spread between power levels of a base station. SOLUTION: Base stations 312, 314 or the like in the soft hand-off adjust a transmission power level in a 1st quantity when they take part in the soft hand-off and adjust a transmission power level in a 2nd quantity when they take no part in the soft hand-off. The adjustment is made by using a down-step size larger than an up-step size when the base stations 312, 314 or the like take part in the soft hand-off. Then the transmission power level is adjusted by a smaller up-step size and a higher down-step size when the base stations 312, 314 or the like receive the adjustment instruction.

公开(公告)号：JP2000324178A

公开(公告)日：2000-11-24

申请号：JP2000111054

申请日：2000-04-12

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KIANG ROGER T ,  KUO WEN-YI ,  MEYERS MARTIN HOWARD

IPC: H04L29/08 ,  H04B7/26 ,  H04L12/28 ,  H04L12/56 ,  H04W28/04 ,  H04W28/06 ,  H04W28/14 ,  H04W88/18 ,  H04L12/66 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To improve data throughput to a communication link set between a data node and a mobile user by interrupting the data packets sent from a data source, buffering the data packets before they are sent to a desired data link and receiving these packets. SOLUTION: An IWFTCP proxy receives a packet from a data server 50 before it transfers the packet to an MS 10 as a new TCP origination and also buffers temporarily the received packet. A TCP function particularly confirms whether the packet that is received from the server 50 and addressed to a specific user (e.g. the MS 10) is correctly received. If the packet is correctly received, the IWFTCP proxy instantaneously sends the ACK back to the server 50 for the received packet. Thereby these packets arrive at each desired destination from the viewpoint of the server 50 and the ACK is quickly returned. Thus, a data rate can be scaled up.

公开(公告)号：JP2000224119A

公开(公告)日：2000-08-11

申请号：JP2000009672

申请日：2000-01-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FUNK ROBERT BERNARD ,  LESSNICK RONALD ,  MEYERS MARTIN HOWARD ,  WANG HONGYI

IPC: H04B7/26 ,  H04B17/00 ,  H04W16/18

Abstract: PROBLEM TO BE SOLVED: To reproduce the RF condition (state) of a cellular network from previously collected job site test data by generating variable RF loss along plural forward direction and backward direction attenuating lines, based on a variable control value extracted from job site test data. SOLUTION: A job site data processor 150 receives job site test data which are collected previously by a mobile diagnosing device in a certain cellular network area. The processor 150 processes received job site test data and extracts an important pilot signal. The extracted pilot signal is assigned to the forward channel of a forward/backward channel attenuator 120, and a variable attenuator control value is calculated for each channel of the attenuator 120. Thus, the attenuator 120 reproduces RF loss caused between various network cell sectors and the mobile diagnosing device in the cellular network.

公开(公告)号：JP2000224106A

公开(公告)日：2000-08-11

申请号：JP2000019660

申请日：2000-01-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KOO YUEN-YIN L ,  KUO WEN-YI ,  MEYERS MARTIN HOWARD ,  WEAVER CARL FRANCIS

IPC: H04B1/7075 ,  H04B1/7097 ,  H04B7/005 ,  H04B7/26 ,  H04J13/00

Abstract: PROBLEM TO BE SOLVED: To correctly calculate transmission power of a mobile station by accurately comprehending path loss in a code division multiple access(CDMA) communication system. SOLUTION: A mobile station recognizes a path loss with a base station by receiving a pilot signal to adjust transmission power of an uplink. The communication system decides an interference correction term for each access probe of the base station by taking detection of an inactive set pilot signal, a thermal nose or a non-CDMA interference into account for this adjustment and executes open loop power control on the basis thereof.

公开(公告)号：JP2000152343A

公开(公告)日：2000-05-30

申请号：JP31972399

申请日：1999-11-10

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MEYERS MARTIN HOWARD ,  NALLEPILI S RAMESH ,  WANG JIAN-REN ,  WU XIAO CHENG

IPC: H04B7/005 ,  H04L12/28 ,  H04W52/50 ,  H04W74/08 ,  H04Q7/38 ,  H04Q7/22 ,  H04Q7/28

Abstract: PROBLEM TO BE SOLVED: To provide a method for reducing the collision amount of access messages on a random access channel(RACH) in an opposite direction by a plurality of mobile stations which are about to obtain simultaneous accesses in the wireless communications system. SOLUTION: A probe message, shorter than an access message in place of the access message, is transmitted through a RACH. The period of use for the RACH by the transmission of the probe message is shorter than that by the transmission of the access message, and the chances for collision with other probe messages can be reduced. Then the access message is sent through a traffic channel or a control channel designated by a base station receiving the probe signal. Alternative method offer data burst being transmitted trough a designated traffic channel or control channel.

公开(公告)号：JP2002124917A

公开(公告)日：2002-04-26

申请号：JP2001247522

申请日：2001-08-17

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHEN TAI-ANN ,  KYPING LEE ,  MEYERS MARTIN HOWARD ,  QIU ROBERT CAIMING ,  WEAVER CARL FRANCIS

IPC: H04L1/00 ,  H04B7/005 ,  H04B7/26 ,  H04J13/00

Abstract: PROBLEM TO BE SOLVED: To allow an external output control loop method for setting a target SIR using a measured FER to work sufficiently in a high-speed fading state. SOLUTION: A method for accelerating the output control using a channel state estimation scheme is provided, wherein the estimation of channel state is equivalent to measuring or estimating channel parameters including the speed of a moving station, Doppler diffusion, K factor, the number of multiplexed channels, and the intensity of each of multiplexed channel, but not limited to these parameters. One or more relation between the channel state and a target signal-to-interference ratio or between other control thresholds are determined. Using the determined relations, the target signal-to-interference ratio or other control thresholds are set. This method has the advantage of estimating or measuring the channel state at much shorter time intervals than service quality parameters such as a frame error rate and bit error rate, accelerating the output control and increasing the system capacity.

公开(公告)号：JP2001136122A

公开(公告)日：2001-05-18

申请号：JP2000302081

申请日：2000-10-02

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KUO WEN-YI ,  MEYERS MARTIN HOWARD

IPC: H04B7/26 ,  H04B7/005

Abstract: PROBLEM TO BE SOLVED: To provide a method for early terminating burst transmission in order to avoid interference. SOLUTION: The method for terminating burst transmission from a mobile station to a base station in this invention, includes a step (A) where power of the burst transmission is adjusted on the basis of it that the signal to interference ratio(SIR) of the burst transmission is apart from an object SIR, a step (B) where the object SIR is adjusted for the burst transmission a step (C) where the operating SIR bringing an interference level of the burst transmission into the outside of the permissible range is compared with the object SIR, a step (D) where the object SIR is decreased on the basis of it that the adjusted object SIR is higher than the operating SIR at the outside of the permissible range, and a step (E) where the burst transmission is stopped on the basis of it that the adjusted object SIR is decreased.