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    Method and apparatus for determining an algebraic solution to gps terrestrial hybrid location systemequations
    33.
    发明专利
    Method and apparatus for determining an algebraic solution to gps terrestrial hybrid location systemequations 未知

    公开(公告)号：HK1055150A1

    公开(公告)日：2003-12-24

    申请号：HK03107438

    申请日：2003-10-15

    Applicant: QUALCOMM INC

    Inventor： FERNANDEZ-CORBATON IVAN ,  VAYANOS ALKINOOS HECTOR ,  AGASHE PARAG ,  SOLIMAN SAMIR

    IPC: G01S19/12 ,  G01S19/03 ,  G01S19/11 ,  H04Q7/34

    Abstract: A method and apparatus for use in a hybrid position location system. The method and apparatus combines measurements from Global Positioning System (GPS) and terrestrial transceiver stations to compute the location of a device. An algebraic solution to hybrid position location system equations is output from the method and apparatus. The method and apparatus determines the position of a device using a non-iterative method, as against the use of a conventional iterative least mean square method. The method of the present invention can be used to solve the location system equations in scenarios where a non-iterative solution is desirable. In certain scenarios, the location system equations may have two possible solutions. An iterative method would converge on one of the solutions, without any indication of the existence of the other ambiguous solution. Moreover, the iterative method may converge on the incorrect of the two ambiguous solutions. Use of the presently disclosed method and apparatus yields both the ambiguous solutions. The disclosed method may be followed up with iterative methods, using the solutions from the algebraic method as initial estimates of the device location for the iterative method. A different process can then select the correct solution. Thus, the algebraic method can be used to detect the existence of ambiguous solutions, and to find both solutions.

    37.
    发明专利
    未知

    公开(公告)号：NO20032175L

    公开(公告)日：2003-07-01

    申请号：NO20032175

    申请日：2003-05-14

    Applicant: QUALCOMM INC

    Inventor： GRILLI FRANCESCO ,  VAYANOS ALKINOOS HECTOR

    IPC: H04B7/26 ,  H04L12/56 ,  H04W72/12

    Abstract: A method and system that enables multiplexing a plurality of data streams onto one data stream based on data stream priorities and available transport frame combinations (TFCs) is disclosed. A mobile station 12 has applications that produce separate data streams. Example applications include voice 32, signaling 34, E-mail 36 and web applications 38. The data streams are combined by a multiplexer module 48 into one data stream called the transport stream 50. The transport stream 50 is sent over the reverse link to base station transceivers (BTS) 14. The multiplexer module 48 multiplexes the data streams onto the transport stream according to their priorities and the available TFCs.

    METHOD AND APPARATUS FOR ALLOCATING DATA STREAMS ONTO A SINGLE CHANNEL
    39.
    发明专利
    METHOD AND APPARATUS FOR ALLOCATING DATA STREAMS ONTO A SINGLE CHANNEL 未知

    公开(公告)号：CA2429186A1

    公开(公告)日：2002-05-23

    申请号：CA2429186

    申请日：2001-11-14

    Applicant: QUALCOMM INC

    Inventor： GRILLI FRANCESCO ,  VAYANOS ALKINOOS HECTOR

    IPC: H04B7/26 ,  H04L12/56 ,  H04W72/12 ,  H04J3/16 ,  H04Q7/36

    Abstract: A method and system that enables multiplexing a plurality of data streams on to one data stream based on data stream priorities and available transport fram e combinations (TFCs) is disclosed. A mobile station 12 has applications that produce separate data streams. Example applications include voice 32, signaling 34, E-mail 36 and web applications 38. The data streams are combin ed by a multiplexer module 48 into one data stream called the transport stream 50. The transport stream 50 is sent over the reverse link to base station transceivers (BTS) 14. The multiplexer module 48 multiplexes the data stream s onto the transport stream according to their priorities and the available TF Cs.

    METHOD AND APPARATUS FOR DETERMINING AN ALGEBRAIC SOLUTION TO GPS TERRESTRIAL HYBRID LOCATION SYSTEM EQUATIONS
    40.
    发明专利
    METHOD AND APPARATUS FOR DETERMINING AN ALGEBRAIC SOLUTION TO GPS TERRESTRIAL HYBRID LOCATION SYSTEM EQUATIONS 未知

    公开(公告)号：CA2393505A1

    公开(公告)日：2001-07-05

    申请号：CA2393505

    申请日：2000-12-07

    Applicant: QUALCOMM INC

    Inventor： FERNANDEZ-CORBATON IVAN J ,  AGASHE PARAG A ,  VAYANOS ALKINOOS HECTOR ,  SOLIMAN SAMIR S

    IPC: G01S19/12 ,  G01S19/03 ,  G01S19/11 ,  H04Q7/34 ,  G01S5/14 ,  G01S5/12

    Abstract: A method and apparatus for use in a hybrid position location system. The method and apparatus combines measurements from Global Positioning System (GPS) and terrestrial transceiver stations to compute the location of a device. An algebraic solution to hybrid position location system equations i s output from the method and apparatus. The method and apparatus determines th e position of a device using a non-iterative method, as against the use of a conventional iterative least mean square method. The method of the present invention can be used to solve the location system equations in scenarios where a non-iterative solution is desirable. In certain scenarios, the location system equations may have two possible solutions. An iterative meth od would converge on one of the solutions, without any indication of the existence of the other ambiguous solution. Moreover, the iterative method ma y converge on the incorrect of the two ambiguous solutions. Use of the present ly disclosed method and apparatus yields both the ambiguous solutios. The disclosed method may be followed up with iterative methods, using the solutions from the algebraic method as initial estimates of the device location for the iterative method. A different process can then select the correct solution. Thus, the algebraic method can be used to detect the existence of ambiguous solutions, and to find both solutions.

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