DIRECTIONAL HANDOVER CONTROL IN DIGITAL MOBILE RADIO SYSTEMS EMPLOYING MAHO
    31.
    发明公开
    DIRECTIONAL HANDOVER CONTROL IN DIGITAL MOBILE RADIO SYSTEMS EMPLOYING MAHO 失效
    使用MAHO的数字移动无线电系统中的方向切换控制

    公开(公告)号:EP0591478A4

    公开(公告)日:1994-08-17

    申请号:EP93903686

    申请日:1993-01-27

    Applicant: MOTOROLA INC

    CPC classification number: H04W36/30 H04W36/32

    Abstract: A method of selecting handover targets for a communication unit (40) exchanging a communicated signal through a serving base site (10-19) in a digital cellular system. The method uses timing advance to determine a relative distance of a communication unit (40) to the serving base site (10-19). The method comprises the steps of comparing a timing advance value with a first threshold. The first threshold may be equal to a distance one and one-half times the radius of the serving cell. When the timing advance value exceeds the first threshold, a base site frequency list is modified to include base sites non-adjacent the serving base site. The identity of the base sites non-adjacent the serving base sites may be determined from the directionality of communication unit (40). The method further includes the step of selecting a handover target providing highest relative RRSI value to the communication unit (40) from the modified base site frequency list.

    METHOD FOR CONTROLLING A WAKE UP RATE OF NODES OPERATING WITHIN A MULTI-HOP COMMUNICATION SYSTEM

    公开(公告)号:CA2715981A1

    公开(公告)日:2009-09-03

    申请号:CA2715981

    申请日:2009-02-23

    Applicant: MOTOROLA INC

    Abstract: A method is provided which enables the connection of nodes out of communication range while minimizing the energy consumption in standby nodes. Specifically, the present invention provides a method to control the wake up rate of standby nodes in a multi-hop communication system. An access point collects, processes, and refines statistical information regarding one or more system parameters; determines a wake up rate based on the statistical information and one or more historical information; and transmits the wake up rate to nodes in its coverage area. A node receives the wake up rate; and periodically changes from a sleep state to a wake up state at the wake up rate to support routing functions for providing multi-hop communication to the one or more access points.

    33.
    发明专利
    未知

    公开(公告)号:DE60224553T2

    公开(公告)日:2009-06-04

    申请号:DE60224553

    申请日:2002-09-16

    Applicant: MOTOROLA INC

    Abstract: A method of automatically prioritizing cells in a neighbor list of a communications system. The priority is defined as the number of times a cell in the neighbor list has been added to the active set. Cells that have been added to the active set more often are given a higher priority. Such higher priority cells are considered first for addition to the monitored set because they are more likely to successfully move from the monitored set to the active set.

    34.
    发明专利
    未知

    公开(公告)号:DE112006003087T5

    公开(公告)日:2008-09-25

    申请号:DE112006003087

    申请日:2006-10-20

    Applicant: MOTOROLA INC

    Abstract: A wide area network assisted multimedia content delivery system (200) includes a first wide area network handset (205) and a second wide area network handset (207) having one or more transceivers (208) for exchanging information over the wide band network as well as multimedia information via an ad hoc communication. A wide area base unit (201) is used for communicating with the first wide area network handset (205) and second wide area network handset (207) where a content distribution broker (203) associated with the wide area base unit (201) is used for brokering multimedia content (audio, video and text data) between the first wide area network handset (205) and the second wide area network handset (207). The transceiver (208) operates to exchange multimedia content in an ad hoc communication directly between the first wide area network handset (205) and second wide area network handset (207) when within a predetermined proximity.

    PICONET CONGESTION RELIEF METHOD FOR MOBILE AD HOC NETWORKS

    公开(公告)号:AU2003228838A1

    公开(公告)日:2003-12-19

    申请号:AU2003228838

    申请日:2003-05-05

    Applicant: MOTOROLA INC

    Abstract: A method of dividing a first piconet into two or more piconets is implemented by a master wireless device. The master wireless device selects a master for a second piconet from among the slave wireless devices within the first piconet. The selection can be based upon each operational link between a base site and candidates for master of the second piconet as well as each operational link between the candidates for master of the second piconet and candidates for active slaves of the second piconet. The master wireless device thereafter informs each slave of the first piconet of the selection of the master of the second piconet. The master wireless device can further assign one or more of the slaves of the first piconet to enlist as a slave in the second piconet, or alternatively, each slave of the first piconet can enlist as a slave in either the first piconet or the second piconet.

    38.
    发明专利
    未知

    公开(公告)号:SE516005C2

    公开(公告)日:2001-11-05

    申请号:SE9500676

    申请日:1995-02-24

    Applicant: MOTOROLA INC

    Abstract: A method of reducing an audio gap in a signal connection with a communication unit during handoff in a cellular communication system is provided. The method includes the steps of providing a temporary signal connection with the communication unit from a mobile switching center (MSC) of a source base site, through the source base site to a handoff target base site and establishing a trunk connection from the MSC of the source base site to a MSC of the target base site. The method further includes the step of interconnecting, at the target base site, the temporary signal connection, trunk connection, and communication unit; and re-routing the signal connection with the communication unit through the trunk connection.

    DIRECTIONAL HANDOVER CONTROL IN DIGITAL MOBILE RADIO SYSTEMS EMPLOYING MAHO

    公开(公告)号:CA2109508C

    公开(公告)日:1999-01-12

    申请号:CA2109508

    申请日:1993-01-27

    Applicant: MOTOROLA INC

    Abstract: A method of selecting handover targets for a communication unit (40) exchanging a communicated signal through a serving base site (10-19) in a digital cellular system. The method uses timing a dvance to determine a relative distance of a communication unit (40) to the serving base site (10-19). The method comprises the steps of co mparing a timing advance value with a first threshold. The first threshold may be equal to a distance one and one-half times the radius of the serving cell. When the timing advance value exceeds the first threshold, a base site frequency list is modifie d to include base sites non-adjacent the serving base site. The identity of the base sites non-adjacent the serving base sites may be determined from the directionality of communication unit (40). The method further includes the step of selecting a handover target p roviding highest relative RRSI value to the communication unit (40) from the modified base site frequency list.

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