公开(公告)号：EP1497931A2

公开(公告)日：2005-01-19

申请号：EP03716995.0

申请日：2003-04-04

Applicant: Qualcomm, Incorporated

Inventor： AGASHE, Parag ,  BLACK, Peter J. ,  PADOVANI, Roberto

IPC: H04B7/08 ,  H04B1/16

CPC classification number: H04B7/0874 ,  Y02D70/1242 ,  Y02D70/444

Abstract: For determining use of receive diversity in a mobile station, a control system ( 210 or 401 ) determines a demand level for use of communication resources. A transmitter ( 300 ) communicates a message indicating use of receive diversity at a mobile station based on the determined demand level. In another aspect, a receiver ( 200 ) receives a channel and determines transmit power level of the channel for being at a lower or upper transmit power level limit. The control system ( 210 or 401 ) controls receive diversity by selecting a number of receiver chains ( 290 ) based on the determined transmit power level. In another aspect, receiver ( 200 ) receives a channel and determines a channel condition of the channel and duration of the channel condition. Control system ( 210 or 401 ) controls receive diversity by selecting a number of receiver chains ( 290 ) based on the determined channel condition and the duration.

Abstract translation: 确定性采矿使用的接收分集的移动台，控制系统（210或401）bestimmt使用通信资源的需求水平。 发射机（300）进行通信的信息，指示在使用基于确定性开采需求水平的移动台接收分集的。 在另一个方面，一个接收器（200）接收信道而确定的地雷发送信道的功率电平是在一个较低的或上部的发射功率电平的限制。 该控制系统（210或401）控制通过选择多个接收机链基于确定性开采发射功率电平（290）的接收分集。 在另一个方面，接收机（200）接收的信道和bestimmt信道条件的信道和持续时间的信道条件。 控制系统（210或401）控制通过选择多个接收机链基于确定性开采信道条件和持续时间（290）的接收分集。

公开(公告)号：EP1192749A1

公开(公告)日：2002-04-03

申请号：EP00945128.7

申请日：2000-06-30

Applicant: QUALCOMM Incorporated

Inventor： BENDER, Paul, E. ,  GROB, Matthew, Stuart ,  KARMI, Gadi ,  PADOVANI, Roberto

IPC: H04L1/00 ,  H04Q7/38 ,  H04B7/26

CPC classification number: H04W28/22 ,  H04B7/264 ,  H04L1/0002 ,  H04W28/08 ,  H04W52/40

Abstract: Reverse link busy bits are independently generated by each base station (102, 104 and 106) and indicative of whether the transmitting base station (102, 104 and 106) has reached a reserve link capacity limit. In a first exemplary embodiment, the remote station (122) combines the multipath components of the reverse link busy bits from each of the transmitting base stations (102, 104 and 106) in its Active Set and in response transmits a reverse link signal only when all of the reverse link busy bits indicate that the base stations (102, 104 and 106) in the remote stations Active Set have reverse link capacity. In a first alternative embodiment, the remote station weights, the reverse link busy signals in accordance with the signal strength of the base station (102, 104 or 106) transmitting the busy signal and determines whether to transmit based on the weighted sum of the busy signals.

公开(公告)号：EP0717891B1

公开(公告)日：2001-11-28

申请号：EP94927369.2

申请日：1994-09-08

Applicant: QUALCOMM Incorporated

Inventor： GARDNER, William, R. ,  JACOBS, Paul, E. ,  PADOVANI, Roberto ,  ZIV, Noam, A. ,  LAM, S., Katherine ,  DeJACO, Andrew, P.

IPC: H04B7/26 ,  H04L1/12 ,  H04Q7/38

CPC classification number: H04W28/22 ,  G10L19/22 ,  G10L19/24 ,  H04B7/2659 ,  H04L1/0014 ,  H04L1/0022 ,  H04L1/0025 ,  H04L47/10 ,  H04L47/14 ,  H04L47/263 ,  H04L47/33 ,  H04L47/38 ,  H04W24/00

Abstract: A method and apparatus for controlling the data rates for communications to and from a base station (2) and a plurality of remote users (4). The usage of the communications resource whether the forward link resource, from base station (2) to remote users (4), or reverse link resource, from remote users (4) to base station (2), is measured. The measured usage value is compared against at least one predetermined threshold value and the data rates of communications or a subset of communications on said communications resource is modified in accordance with said comparisons.

公开(公告)号：EP1145462A2

公开(公告)日：2001-10-17

申请号：EP99961921.6

申请日：1999-12-02

Applicant: QUALCOMM Incorporated

Inventor： PADOVANI, Roberto

IPC: H04B7/00

CPC classification number: H04W52/283 ,  H04W52/221 ,  H04W52/343 ,  H04W52/36

Abstract: In a wireless communication system, in order to determine a level of loading, the system enters a period of silence during which a designated remote unit (42) continues to transmit but other remote unit transmissions are interrupted. The base station (40) and designated remote unit (42) perform closed loop power control on a reverse link signal received from the designated remote. A first series of power control commands accumulated and a first corresponding transmit gain adjustment value is stored. Normal operation is resumed. Once again, the base station (40) and designated remote unit perform closed loop power control on the reverse link signal received from the designated remote unit (42). A second series of power control commands are accumulated and a second corresponding transmit gain adjustment value is stored. A level of loading is determined based upon the first and second transmit gain adjustment values.

公开(公告)号：EP0976206A1

公开(公告)日：2000-02-02

申请号：EP99908295.1

申请日：1999-02-19

Applicant: QUALCOMM Incorporated

Inventor： BENDER, Paul, E. ,  PADOVANI, Roberto

IPC: H04B7/005 ,  H04B17/00

CPC classification number: H04L1/0071 ,  H04L1/0002 ,  H04L1/0025 ,  H04L1/0059 ,  H04L1/0068 ,  H04L1/208 ,  H04W36/18 ,  H04W36/30 ,  H04W52/24 ,  H04W52/241 ,  H04W52/40 ,  H04W52/44 ,  H04W52/58 ,  H04W52/60 ,  H04W56/00 ,  H04W68/00

Abstract: A system and method is taught for controlling the power level of transmissions within a communication system having a base station, a mobile station, a communication channel, and a pilot channel. The mobile station determines a signal strength value according to a communication signal received by way of the communication channel. A pilot channel signal is determined according to a pilot signal transmitted by way of the pilot channel. The signal to noise ratio of the communication signal is determined according to the determined signal strength value and the pilot channel signal. The power level of a transmission is controlled according to the signal to noise ratio. The noise level in a communication channel within the communication system is estimated. The pilot channel signal includes pilot energy and pilot noise components. The pilot energy component is removed to provide a remaining pilot signal. Communication system operations are controlled according to the remaining pilot signal. The power levels of transmissions are controlled by determining the signal to noise ratio of a signal within the communication channel and determining a difference signal. The difference signal is formed by determining the difference between determined and desired signal to noise ratios. The difference signal is transmitted between the base station and the mobile station. The pilot channel has at least one frame and the power control signal is inserted into the frame. Thus, information representing the strength of the communication signal is transmitted to the base by way of the pilot channel within the frame. The pilot channel can have two information frames for transmitting the power control signal a plurality of times.

公开(公告)号：EP0951793A2

公开(公告)日：1999-10-27

申请号：EP97929732.0

申请日：1997-05-23

Applicant: QUALCOMM INCORPORATED

Inventor： WEAVER, Lindsay, A., Jr. ,  MUNSINGER, David, B. ,  PADOVANI, Roberto ,  ZIV, Noam, A. ,  KARMI, Gadi ,  GILHOUSEN, Klein, S.

IPC: H04W24 ,  H04W36

CPC classification number: H04W36/30 ,  H04W36/0083

Abstract: In a communications network, a network user communicates through a remote unit (30) with another user via at least one base station (100). The communications network includes a first mobile switching center (MSC-I) which controls communications through a first set of base stations including a first base station (100). The remote unit (30) stores a list of active base stations which has an entry corresponding to each base station with which active communication is established. The first base station (100) has an entry on the list of active base stations. The first base station (100) measures a round trip delay of an active communication signal between the first base station (100) and the remote unit (30). A handoff of the active communication signal is initiated if the round trip delay of the active communication exceeds a threshold if the first base station (100) is designated as a reference base station. Alternatively, the remote unit (30) also stores a list of candidate base stations comprising an entry corresponding to each base station through which active communication may be possible but is not established. A handoff of the active communication signal is initiated if the list of candidate base stations comprises an entry corresponding to a triggering pilot signal.

公开(公告)号：EP0824802A1

公开(公告)日：1998-02-25

申请号：EP96919001.0

申请日：1996-05-02

Applicant: QUALCOMM INCORPORATED

Inventor： ZIV, Noam, A. ,  PADOVANI, Roberto ,  LEVIN, Jeffrey, A. ,  EASTON, Kenneth, D.

IPC: H04L1 ,  H04B1 ,  H04B7 ,  H04J11 ,  H04J13 ,  H04L27 ,  H04Q7

CPC classification number: H04B1/70752 ,  H04B1/707 ,  H04B1/70756 ,  H04B1/7113 ,  H04B1/7117 ,  H04B7/2628 ,  H04B2201/70703 ,  H04J13/0048

Abstract: An integrated search processor (128) used in a modem (110) for a spread spectrum communications system buffers in a buffer (172) received signals samples and utilizes a time sliced transform processor (120) operating on successive offsets from the buffer (172). The search processor (128) autonomously steps through a search as configured by a microprocessor (136) specified search parameter set, which can include the group of antennas to search over, the starting offset and width of the search window to search over, and the number of Walsh symbols to accumulate results at each offset. The search processor (128) calculates the correlation energy at each offset, and presents a summary report of the best paths found in the search to use for demodulation element (122) reassignment. The search is done in a linar fashion independent of the probability that a signal being searched for was transmitted at any given time.

公开(公告)号：EP0722649A1

公开(公告)日：1996-07-24

申请号：EP94932123.0

申请日：1994-10-28

Applicant: QUALCOMM INCORPORATED

Inventor： GILHOUSEN, Klein, S. ,  PADOVANI, Roberto

IPC: H04W52 ,  H04B7 ,  H04W36 ,  H04W16

CPC classification number: H04W36/06 ,  H04B7/0491 ,  H04W16/24 ,  H04W36/18 ,  H04W36/20 ,  H04W52/24 ,  H04W52/34 ,  H04W52/40

Abstract: A plurality of methods for achieving the soft or softer handoff process such that the performance of a system is improved. A first method is based on delaying the softer handoff process. A second method is based on reducing the power of transmissions from the sector having the weakest signal strength. A third method is based on eliminating transmissions from the sector having the weakest signal strength. A fourth method adds a new base station or sector only when the mobile unit is in need of additional power to operate properly. In all four methods, reverse link demodulation in each sector may continue with or without the transmission of the forward link. In all four methods the operation could be based on the signal strength of the reverse link signal or the forward link. It is also possible to combine two or more of these methods to create a hybrid method.

公开(公告)号：EP0720808A1

公开(公告)日：1996-07-10

申请号：EP95927333.0

申请日：1995-07-21

Applicant: QUALCOMM INCORPORATED

Inventor： PADOVANI, Roberto ,  WEAVER, Lindsay, A., Jr. ,  BENDER, Paul, E.

IPC: H04W24 ,  H04B7 ,  H04W52 ,  H04W36

CPC classification number: H04W52/143 ,  H04W36/06 ,  H04W52/04 ,  H04W52/245 ,  H04W52/246 ,  H04W52/40

Abstract: A method and apparatus for matching the location of the forward link handoff boundary to the reverse link handoff boundary. A system constant is chosen which defines the product of the received power and the transmitted pilot power at every base station. The reverse link power level is measured at the base station and the forward link power level is compensated for the reverse link loading to maintain the constant product. Thereby the forward link handoff boundary to the reverse link handoff boundary are aligned to the same location.

公开(公告)号：EP0676119A1

公开(公告)日：1995-10-11

申请号：EP94932119.0

申请日：1994-10-28

Applicant: QUALCOMM INCORPORATED

Inventor： GILHOUSEN, Klein, S. ,  PADOVANI, Roberto ,  WEAVER, Lindsay, A., Jr.

IPC: H04B7 ,  H04W36 ,  H04W52 ,  H04W16

CPC classification number: H04W36/06 ,  H04B7/0491 ,  H04W16/24 ,  H04W36/18 ,  H04W52/146 ,  H04W52/40

Abstract: A method and apparatus providing softer handoff of a mobile unit (90) between sectors (50, 70 and 80) of a common base station (60). A sectorized base station (60) comprises a set of demodulation elements (240A-204N). Each demodulation element (240A-204N) may be assigned to a signal from one of a plurality of sectors. The output of the demodulators (240A-204N) are combined before the decoding process independent of the sector from which the data originated. This configuration provides improved output data reliability, more stable power control, and more efficient use of resources at the base station.

Abstract translation: 一种方法和装置提供功率控制的无线通信系统，包括：生成一个功率控制命令; 以及使所述功率控制命令到一个公共基站，由此扇区发送相同的功率控制信息传送到移动单元的扇区的多元性。