Wireless communication unit,communication system and method of recording communication therein

    公开(公告)号:GB2412274B

    公开(公告)日:2007-05-23

    申请号:GB0405881

    申请日:2004-03-17

    Applicant: MOTOROLA INC

    Abstract: A wireless direct mode communication unit (200) is capable of communication with a number of second communication unit(s). The wireless direct mode communication unit (200) comprises a transceiver for transmitting and/or receiving communications to/from the number of second communication unit(s). A signal processing function (208), operably coupled to or comprising a recording function (216, 234), records a communication event between the wireless direct mode communication unit (200) and a number of second communication unit(s). A method of recording a communication event is also provided.In this manner, it is possible to track a performance of, messages sent to and/or received from a direct mode communication unit. In particular, it is possible to utilise the recorded information to re-enact an incident at a later time and/or identify how a communication unit/user reacted to a given scenario in a DMO communication system.

    73.
    发明专利
    未知

    公开(公告)号:DE112004001544T5

    公开(公告)日:2006-06-29

    申请号:DE112004001544

    申请日:2004-06-29

    Applicant: MOTOROLA INC

    Abstract: A method of estimating the distance between a first wireless communication terminal and a second wireless communication terminal includes: receiving a signal at the first terminal, processing the received signal including performing a demodulation operation to produce a demodulated signal; and resolving the demodulated signal into a plurality of components corresponding to different path length components included in the received signal; identifying which of the resolved components corresponds to a shortest path length; and for the identified component, computing a time of travel from the second terminal to the first terminal.

    Measuring distance using wireless communication

    公开(公告)号:GB2405276B

    公开(公告)日:2005-10-12

    申请号:GB0319703

    申请日:2003-08-21

    Applicant: MOTOROLA INC

    Abstract: A method of estimating the distance between a first wireless communication terminal and a second wireless communication terminal includes: receiving a signal at the first terminal, processing the received signal including performing a demodulation operation to produce a demodulated signal; and resolving the demodulated signal into a plurality of components corresponding to different path length components included in the received signal; identifying which of the resolved components corresponds to a shortest path length; and for the identified component, computing a time of travel from the second terminal to the first terminal.

    Using a broadcast signal to overcome interference in a wireless uplink channel

    公开(公告)号:GB2404306A

    公开(公告)日:2005-01-26

    申请号:GB0317373

    申请日:2003-07-25

    Applicant: MOTOROLA INC

    Abstract: A wireless communication system (200) comprises at least one wireless serving communication unit (222) serving a plurality of remote units (212-216) with a communication resource (218-220), the at least one wireless serving communication unit (222) transmits a broadcast message on an outbound communication resource indicating a non- availability of one or more inbound communication resource(s), a communication unit, a broadcast message, a wireless communication unit and method of communication are also provided. Thus, by using a broadcast message of an uplink channel's 20 non-availability, the impact of a third party transmitting a jamming /interfering signal is reduced. The system may be used with FDD, TETRA protocols.

    Mobile communication stations, methods and systems

    公开(公告)号:GB2387072B

    公开(公告)日:2004-09-22

    申请号:GB0207344

    申请日:2002-03-28

    Applicant: MOTOROLA INC

    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.

    Telephone handset units
    78.
    发明专利

    公开(公告)号:GB2384649B

    公开(公告)日:2004-08-25

    申请号:GB0201780

    申请日:2002-01-28

    Applicant: MOTOROLA INC

    Abstract: A telephone unit 5 including a touchsensitive display screen 3 operable to display images of user operable keys 15, 17 such that when a region of the screen facing one of the key images is touched by the user a telephone function corresponding to that key is operated and wherein the display screen is operable to display the images of the keys in a first region of the display screen and another display image in a second area of the screen, and wherein the unit is operable to provide to a user selectable options of different relative positions of the first and second regions of the display screen. The unit may use a radio frequency transceiver or a modem connected to a landline for communication. The high resolution, LCD, LED or electroluminescent display is capable of displaying text, data, messages, pictures, graphical images, video images, maps, visual images of optical, infra-red (IR) or X-ray photographs and information relating to such images. Ergonomic, thumb-operated or one-handed use is enabled by displaying a keypad in the upper region of the display.

    Communications methods and apparatus for use therein

    公开(公告)号:AU2003226772A8

    公开(公告)日:2003-12-12

    申请号:AU2003226772

    申请日:2003-03-31

    Abstract: A method and apparatus of operation of a mobile communication system comprising at least one mobile station is disclosed. The method and apparatus comprise storing in a database information relating to coverage areas of a plurality of wireless networks and monitoring the mobile station for its location while the mobile station is connected to a serving network. The method and apparatus then require comparing the monitored location of the mobile station with the stored coverage area information to produce an alert signal in the mobile station which indicates to the mobile station that one of the wireless networks is nearby. The method and apparatus then initiate a procedure to handover connectivity from the serving network to a nearby network, wherein the serving network and the nearby network use routing address protocols which have a common internet protocol (IP) address routing portion.

    COMMUNICATIONS METHODS AND APPARATUS FOR USE THEREIN

    公开(公告)号:AU2003226772A1

    公开(公告)日:2003-12-12

    申请号:AU2003226772

    申请日:2003-03-31

    Applicant: MOTOROLA INC

    Abstract: A method and apparatus of operation of a mobile communication system comprising at least one mobile station is disclosed. The method and apparatus comprise storing in a database information relating to coverage areas of a plurality of wireless networks and monitoring the mobile station for its location while the mobile station is connected to a serving network. The method and apparatus then require comparing the monitored location of the mobile station with the stored coverage area information to produce an alert signal in the mobile station which indicates to the mobile station that one of the wireless networks is nearby. The method and apparatus then initiate a procedure to handover connectivity from the serving network to a nearby network, wherein the serving network and the nearby network use routing address protocols which have a common internet protocol (IP) address routing portion.

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