公开(公告)号：HK1068736A1

公开(公告)日：2005-04-29

申请号：HK05100789

申请日：2005-01-31

Applicant: QUALCOMM INC

Inventor： AMERGA MESSAY ,  JOSHI ABHAY ,  LEVIN MARK

IPC: H04B1/00 ,  H04B1/7117 ,  H04B7/08 ,  H04B7/26

Abstract: A method for assigning tracking elements includes sorting a list of potential assignments according to a diversity criterion. In one example, a list of received signal instances is sorted first according to a measure of energy and then sorted again according to the diversity criterion. In a further embodiment, a demodulation element may be labeled available for assignment yet continue to output demodulated symbols in a locked state. Applications to a mobile station of a CDMA system for cellular telephony are discussed.

公开(公告)号：BR0115401A

公开(公告)日：2005-01-25

申请号：BR0115401

申请日：2001-11-14

Applicant: QUALCOMM INC

Inventor： AMERGA MESSAY ,  PATRICK CHRISTOPHER ,  RICK ROLAND ,  ROWITCH DOUGLAS N ,  YOUNIS SAED

IPC: G01S1/00 ,  G01S19/25 ,  H04B7/26 ,  H04W64/00 ,  G01S5/02

Abstract: Techniques to detect whether or not a remote terminal is under the coverage of a repeater within a wireless communication network, which may be based on (1) a list of base stations expected to be received while under the repeater's coverage, (2) the characterized environment of the repeater, and/or (3) the propagation delays for a transmission received at the remote terminal. Additional ambiguity resulting from being under a repeater's coverage may also be accounted for and/or compensated by (1) discarding time measurements from repeated base stations, (2) adjusting the processing for position estimation to account for the additional ambiguity due to the repeater, (3) computing a series of position estimates based on multiple transmissions received from the same originating base station and selecting the best estimate, and/or (4) computing a series of position estimates based on multiple transmissions from multiple originating base stations and selecting the best estimate.

公开(公告)号：AU2003262934A1

公开(公告)日：2004-03-19

申请号：AU2003262934

申请日：2003-08-26

Applicant: QUALCOMM INC

Inventor： AMERGA MESSAY ,  HALBHAVI SUDHIR

IPC: H04B1/707 ,  H04W36/08 ,  H04W36/30 ,  H04W40/02 ,  H04W48/20 ,  H04W52/02 ,  H04W68/00 ,  H04Q7/38

Abstract: Techniques for cell reacquisition and reselection that increases time spent in low-power mode while effectively monitoring neighbor cells are disclosed. In one aspect, one or more windows around the expected location of the serving cell are searched in the period of time prior to the page indicator. In another aspect, intra-frequency neighbor cells are searched first to determine reselection candidates. Various other aspects are also presented. These aspects have the benefit of increasing time spent in low-power mode, thereby reducing power consumption and increasing standby time.

公开(公告)号：CA2495859A1

公开(公告)日：2004-03-11

申请号：CA2495859

申请日：2003-08-19

Applicant: QUALCOMM INC

Inventor： AMERGA MESSAY ,  HALBHAVI SUDHIR

IPC: H04B7/26 ,  H04W36/30 ,  H04W52/02 ,  H04Q7/38 ,  H04Q7/32

Abstract: Techniques for limiting cell reselection in response to a variable channel are disclosed. In one aspect, a measurement of received pilot power from a base station is used as an indication of channel quality. In another aspect, hysteresis is applied to limit cell reselection, wherein the hysteresis is greater in relatively higher quality channel environments and lower in relatively lower channel quality environments. Various other aspects are also presented. These aspects have the benefit of reducing cell reselection, thus increasing time spent in low-power mode, thereby reducing power consumption and increasing standby time.

公开(公告)号：AU2003221864A1

公开(公告)日：2003-10-27

申请号：AU2003221864

申请日：2003-04-09

Applicant: QUALCOMM INC

Inventor： RISTIC BORISLAV ,  BHATIA ASHOK ,  RICK ROLAND R ,  STEIN JEREMY M ,  AMERGA MESSAY ,  FERNANDEZ-CORBATON IVAN JESUS

IPC: G01S5/00 ,  G01S5/02 ,  G01S5/14 ,  G01S19/27 ,  H04W64/00 ,  H04Q7/38

Abstract: A method and apparatus for calculating a representative measurement from multiple data measurements of signals from cellular base stations, thereby facilitating utilization of a cellular network to determine position of a mobile station even in non-line of sight and/or dynamic fading environments. A method for calculating a representative measurement includes determining a window of time, selecting data measurements within the window, and calculating a representative time of arrival responsive thereto, such as averaging all data measurements within the window. A representative RMSE estimate may be calculated. To determine a window of time all data measurements within a predetermined window from an earliest time of arrival may be selected. Alternatively the window may be determined by sliding over the data measurements. The data measurements may be stored in a database in a mobile station, and the database is updated to include each new measurement.

公开(公告)号：AU2002241864A1

公开(公告)日：2002-07-24

申请号：AU2002241864

申请日：2002-01-10

Applicant: QUALCOMM INC

Inventor： RICK ROLAND R ,  AMERGA MESSAY ,  GLAZKO SERGUEI ,  MALHOTRA ROHIT

IPC: H04B1/7117 ,  H04B7/06 ,  H04B1/707

Abstract: An apparatus, such as a subscriber unit or a base station within a spread spectrum communication system, may add one or more additional "virtual" paths to a list of candidate paths when assigning demodulation elements. These "virtual" paths are added as candidate paths even though a corresponding peak was not necessarily detected within a received spread spectrum system. The list of paths may include a first path having a time offset approximately equal to a time offset for one of the demodulation elements, and the virtual path having a short time separation from the first path. The time separation between the paths may be, for example, less than 2 chips.

公开(公告)号：AU9275201A

公开(公告)日：2002-03-26

申请号：AU9275201

申请日：2001-09-12

Applicant: QUALCOMM INC

Inventor： CHEN JIANGXIN ,  NEUFELD ARTHUR ,  GLAZKO SERGUEI ,  AMERGA MESSAY

IPC: H04W52/02 ,  H04W68/00 ,  H04Q7/38

Abstract: A mobile station selectively operates in quick paging mode (108) or in slotted paging mode (110). If the quality of the channel exceeds a threshold (106), then the mobile station operated in quick paging mode; otherwise in slotted paging mode. The mobile station measures channel quality by measuring various quality metrics (112-120) made during several previous pages (124), preferably over a period of about ten seconds (128). The quality metrics, and the previous pages, are preferably all given equal weight (122, 126).

公开(公告)号：NO20021271D0

公开(公告)日：2002-03-14

申请号：NO20021271

申请日：2002-03-14

Applicant: QUALCOMM INC

Inventor： ACHOUR BAAZIZ ,  AMERGA MESSAY ,  GLAZKO SERGUEI A

IPC: H04B1/7117 ,  H04B7/02 ,  H04B1/7176 ,  H04B7/04 ,  H04Q7/38 ,  H04B

Abstract: A method of creating a path list for use in finger assignments comprising clearing a list of paths (12), choosing a sector for consideration from an active set of sectors (14), establishing a searcher window around the sector for cosideration (16), and determining up to "n" local maxima stronger than a threshold value (18). If a sector under consideration is transmitting on supplemental channels(19), the method involves artificially biasing the findings of the searcher window by a predetermined value (20). The biasing value may be constant, variable or proportional to the number of supplemental channels on the base station. After the local maxima corresponding to base stations transmitting on supplemental channels have been biased (20), the path lists are created (21).

公开(公告)号：CA2404297A1

公开(公告)日：2001-10-11

申请号：CA2404297

申请日：2001-03-30

Applicant: QUALCOMM INC

Inventor： BAYLEY GWAIN ,  AMERGA MESSAY ,  HUGHES ROBBIN

IPC: H04W48/20 ,  H04Q7/38 ,  H04B1/707

Abstract: A method and apparatus for improving searching in a remote unit of a slotted mode, wireless, communication system. In a slotted mode communication system, the remote unit enters an "active state" during its assigned slot. While in the active state, a controller in the remote unit passes selected sets of search parameters to a search engine. The order that the searches are performed is based on the measured signal strength and the age of the measurement. The search engine performs searches using the selected sets of search parameters. Searching continues as long as the remote unit is in the active state. When the remote unit enters the inactive state, searching ceases. While in the inactive state, the controller evaluates the results of the searches performed during the previous active state. During the next active state, the next sequence of searching is performed based on measured signal strength and the measurement age corresponding to the measurements made during the previous active state.

公开(公告)号：AU7495400A

公开(公告)日：2001-04-17

申请号：AU7495400

申请日：2000-09-14

Applicant: QUALCOMM INC

Inventor： AMERGA MESSAY

IPC: H04B1/7117 ,  H04B7/02 ,  H04B7/04 ,  H04Q7/22 ,  H04B1/707

Abstract: A method and communication system for assigning the plurality of fingers to demodulation paths in a path list which insures that at least one finger will be assigned to a demodulation path supporting a supplemental channel, if one exists. The method involves determining whether any of the fingers is demodulating a supplemental channel (112). When no fingers are demodulating supplemental channels, the it is determined whether the sector containing the path under consideration supports supplemental channels (114). If the sector containing the path under consideration supports supplemental channels, then the method determines the strength of the signal path relative to the weakest finger (116). If the path is a certain amount greater in strength then the weakest finger, then the method involves reassigning that finger to the path with the supplemental channel (108) and if the path with the supplemental channel is a certain amount of strength weaker than the weakest finger plus a certain value, then the method involves determining whether the weakest finger is the only one supporting the supplemental channel (118). If the weakest finger is the only one supporting supplemental channels, and the sector supports supplemental channels (120), then that finger is assigned to the demodulation path with the supplemental channel (108), thus insuring that the information on a supplemental channel is always demodulated by a finger during a soft-handoff in a high data rate call if one or more fingers are already demodulating supplemental channels, then the finger assignment algorithm will proceed in the conventional way.