公开(公告)号：GB2434948A

公开(公告)日：2007-08-08

申请号：GB0602195

申请日：2006-02-03

Applicant: MOTOROLA INC

Inventor： SIDON JEAN ,  ALON YANIV ,  SERFATY SALOMON

IPC: H03M13/45 ,  H04L1/00 ,  H04Q7/28

Abstract: A wireless communication receiver comprises a SNR measurement logic (112) for measuring a SNR value of the received signal and signal processing logic (108) arranged to process the received wireless signal (Fig. 1, not shown). The signal processing logic (108) comprises demodulator logic (255) operably coupled to log likelihood ratio (LLR) logic (262) and decoding logic (265). A scaling factor (Q), dependent upon the measured signal-to-noise ratio, is applied to the vector of LLR values provided by de-mapping unit (260). The values are then saturated by converting any values outside the range [-A...+A] to one of -A or +A. The values are then quantized prior to input to a FEC decoder. Scaling factors corresponding to SNR values may be stored in a memory element. Applications include dual-mode TETRA-1 and TETRA-2 receivers.

公开(公告)号：AT348486T

公开(公告)日：2007-01-15

申请号：AT02023133

申请日：2002-10-15

Applicant: MOTOROLA INC

Inventor： SHAHAF MARK ,  CARMON RAFAEL ,  SERFATY SALOMON

IPC: H04B17/00 ,  H04W24/00 ,  H04Q7/34

公开(公告)号：DE60309457D1

公开(公告)日：2006-12-14

申请号：DE60309457

申请日：2003-03-03

Applicant: MOTOROLA INC ,  MOTOROLA LTD

Inventor： BAR-ON DAVID ,  SHAHAF MARK ,  SERFATY SALOMON ,  HASSON BARUH

IPC: G01S5/06 ,  G01S5/00 ,  G01S5/02 ,  H04W64/00

Abstract: A method for use in a mobile communication system for estimating the location of a target mobile station (MS) which includes receiving signals from the target MS (N) at a plurality of receivers (MS 1 , MS 2 , MS 3 ) in different locations and calculating the location of the target MS (N) from information obtained from the received signals, wherein at least one of the receivers (MS 1 ) is a searching MS and wherein the calculation of location is carried out by the searching MS (MS 1 ). The method may involve the target MS and the searching MS or MSs communicating by a direct mode of operation (DMO) link. The searching MSs may conveniently have GPS attachments. A mobile station which may be used as the target MS or as a searching MS and a system incorporating the same is also disclosed.

公开(公告)号：GB2405276A

公开(公告)日：2005-02-23

申请号：GB0319703

申请日：2003-08-21

Applicant: MOTOROLA INC

Inventor： LUZZATTO ARIEL ,  SERFATY SALOMON

IPC: A63F13/12 ,  G01S1/02 ,  G01S5/14 ,  G01S11/02 ,  G01S11/06 ,  H04L27/26 ,  H04L29/06

Abstract: A means for determining the distance between a first and second wireless communication terminal is disclosed whereby a first terminal receives a signal comprising a composite multipath derivative of an orthogonal frequency division multiplexed signal transmitted by a second terminal. The received signal 109 is demodulated 202 and resolved into a plurality of components corresponding to different path length components in the received signal and the component corresponding to the shortest path length is identified 212. For the identified component, the time of travel from the second terminal to the first terminal is determined 213. The first terminal may further determine a strength value for each of the resolved components. Each strength value may be compared with a threshold value to determine if a strength value is considered to be non-zero such that only components having non-zero strength values are included when determining the component having the shortest path length. The signal transmitted by the second terminal and received in a multipath derivative form by the first terminal may be a physical layer convergence procedure PLCP training signal. The terminals may be part of a local area network wherein the first terminal may comprise an access point terminal AP and the second terminal may comprise a remote unit terminal RU.

公开(公告)号：GB2384139B

公开(公告)日：2004-08-18

申请号：GB0200755

申请日：2002-01-15

Applicant: MOTOROLA INC

Inventor： SHAHAF MARK ,  SERFATY SALOMON

IPC: H04B7/26 ,  H04W12/00 ,  H04L12/22

Abstract: A wireless communications system 300 includes a wireless serving communication unit 322 serving a plurality of remote units 312-316 with a communication resource 318-320. The at least one wireless serving communication unit 322 includes a transmitter (421, see figure 4) for transmitting data on an outbound communication resource, and a receiver (422, see figure 4) for receiving a communication on an inbound communication resource, wherein said inbound and outbound resources have a variable communication resource offset. Said resource offset may be a frequency difference between inbound and outbound resources in FDD or a inbound and outbound timeslot separation in TDD. Information relating to said resource offset may be encrypted and transmitted to at least one of said remote units. Also disclosed is a communication unit 322-332, 312-316 adapted to operate in said communications system 300, and a method of communication. By using a variable communication resource offset, the potential for a third party to jam a communication between the wireless serving unit 322 and a remote unit 312-316 is reduced.

公开(公告)号：GB2389200A

公开(公告)日：2003-12-03

申请号：GB0212330

申请日：2002-05-29

Applicant: MOTOROLA INC

Inventor： KRUPNIK YERACH ,  SHIRAZI GADI ,  SERFATY SALOMON

IPC: G06F1/32 ,  G06F1/26

Abstract: A data communication device, such as a PCMCIA modem, for connection to a computer has a first operably energised "on" state and a second not operably energised "off" state. When the device is attached to a computer a user may select which of the states the device should be in and signals are sent to the device from the computer to effect the user selection. Additionally, the device may be switched between the states automatically, for example when it is connected to the computer or after a predetermined time has elapsed. The device may include a data link, an interface and a translator and the switching means may be a voltage switch or a transistor switch. The data link may include an inverter and a low pass filter.

公开(公告)号：GB2382953A

公开(公告)日：2003-06-11

申请号：GB0128952

申请日：2001-12-04

Applicant: MOTOROLA INC

Inventor： SHAHAF MARK ,  SERFATY SALOMON ,  PRIESTER GAVRIEL

IPC: H04M1/725 ,  H04W52/02 ,  H04Q7/32

Abstract: In order to prevent unintentional actuation of a mobile telephone function, one or more functions are disabled while it is detected that the telephone is in an inactive state. The disabled function may include the transmission of a call set-up signal, the receiving of data messages, or the replacement of an audible call announcement by a vibratory one. Some or all of the functions operated by the keypad may be disabled. In the embodiments described, the inactive state is detected when the telephone (1) is placed in a holder (2). Detection may be by a magnet (4) in the holder which switches a Hall effect device (3) on the telephone, by mechanical actuation of a switch, or by a light or infra-red actuated switching device.

公开(公告)号：AU1053402A

公开(公告)日：2002-05-06

申请号：AU1053402

申请日：2001-10-15

Applicant: MOTOROLA INC ,  MOTOROLA LTD

Inventor： SHAHAF MARK ,  SERFATY SALOMON ,  CARMON RAFAEL

IPC: H04W64/00 ,  H04Q7/38

公开(公告)号：GB2242597B

公开(公告)日：1994-04-20

申请号：GB9006106

申请日：1990-03-17

Applicant: MOTOROLA INC

Inventor： SERFATY SALOMON

IPC: H04L25/03 ,  H04L27/22 ,  H04L27/38 ,  H03H21/00

公开(公告)号：ES2326472T3

公开(公告)日：2009-10-13

申请号：ES03730198

申请日：2003-05-07

Applicant: MOTOROLA INC ,  MOTOROLA LTD

Inventor： SHAHAF MARK ,  SERFATY SALOMON ,  GLAZER NIMROD

IPC: H04W12/08 ,  H04L12/56 ,  H04W12/00 ,  H04W48/02

Abstract: Un sistema de comunicación inalámbrica (100) que consta de: una infraestructura de sistema (142, 138, 122) que incluye al menos un terminal de servicio de comunicación inalámbrica (122); y una pluralidad de terminales remotos de comunicación inalámbrica (112, 114); El al menos un terminal de servicio (122) está adaptado para brindar servicio a una pluralidad de los terminales remotos (112, 114) con una fuente de comunicación, donde el al menos un terminal de servicio de comunicación inalámbrica (122) incluye: un transmisor (220) para transmitir señales a al menos uno de la pluralidad de los terminales remotos; y un procesador (320) acoplado al transmisor (220) adaptado para producir, por la inclusión en una señal transmitida por el transmisor (220), datos de identidad que proporcionan la identidad de las terminales de servicio (122) y/o la identidad de la infraestructura (142, 138, 122) en la que está incluido; y al menos uno de los terminales remotos de comunicación (112) que incluye: un receptor (210) para recibir las señales transmitidas desde el al menos un terminal de servicio de comunicación inalámbrica (122), y un procesador (360), acoplado al receptor (210) (220), adaptado para obtener los datos de identidad que proporciona la identidad del terminal de servicio (122) y/o la identidad de la infraestructura (142, 138, 122); caracterizado porque el procesador (320) del al menos un terminal de servicio está adaptado para producir los datos de identidad de manera encriptada (340) y el trasmisor está adaptado para transmitir una señal que incluye los datos de identidad encriptados; el receptor (210) del terminal remoto (112) está adaptado para recibir la señal que incluye los datos de identidad encriptados y el procesador (360) del, al menos un, terminal remoto (112) está adaptado para desencriptar los datos de identidad encriptados y para determinar, partiendo de los datos desencriptados, que el terminal de servicio es un terminal de servicio válido y/o la infraestructura en la cual el terminal de servicio esté incluido es una infraestructura válida.