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    3.
    发明专利
    未知

    公开(公告)号：BR0111925A

    公开(公告)日：2003-06-17

    申请号：BR0111925

    申请日：2001-05-01

    Applicant: MOTOROLA INC

    Inventor： SPEAR STEPHEN L

    IPC: H04B7/26 ,  H04W36/08 ,  H04W36/10 ,  H04W36/18 ,  H04W92/12 ,  H04Q7/20

    Abstract: A. method and system of generating neighbor cell lists in a cellular environment having a first cell (cell D) and a plurality of neighbor cells (cells C, E, F, and G). The first cell and the neighbor cells each include a plurality of designated active controllers associated therewith. In one embodiment, one of the controllers (RNC3) in the first cell is designated as the active controller for the first cell, a first neighbor list of the active controllers (RNC1, RNC3, RNC4, and RNC 4, respectively) for the neighbor cells is generated, and, upon a change in active status of any of the neighboring active controllers, a second neighbor list of the active controllers (RNC2, RNC4, RNC4, and RNC4, respectively) for the neighbor cells is generated. The lists are generated in accordance with a database of controllers linkable with the designated active controllcr.

    4.
    发明专利
    未知

    公开(公告)号：ES2131040T3

    公开(公告)日：1999-07-16

    申请号：ES88118501

    申请日：1988-11-07

    Applicant: MOTOROLA INC

    Inventor： SPEAR STEPHEN L

    IPC: H04W36/08 ,  H04W36/38 ,  H04W76/02 ,  H04Q7/22 ,  H04B7/26

    Abstract: An improved cellular telephone communication system is described having operational steps which prevent a call from being dropped due to a radiotelephone (130) not receiving a handoff instruction from its host base site (115). The system includes a switch controller (122) for determining that the radiotelephone requires a handoff from a first base site coverage area (110) to a second base site coverage area (112) and for communicating a handoff message to the associated first (115) and second base site equipment (119). The first base site equipment then transmits the handoff message to the radiotelephone. If the radiotelephone does not receive the message, it determines that the call has been lost, siezes a signalling channel from the second base site, and requests, via the second base site a call reconnection by transmitting a special message. The second base site then informs the radiotelephone of the handoff instruction and the handoff is completed with a successful reconnection of the call.

    5.
    发明专利
    未知

    公开(公告)号：DE3856308D1

    公开(公告)日：1999-04-08

    申请号：DE3856308

    申请日：1988-11-07

    Applicant: MOTOROLA INC

    Inventor： SPEAR STEPHEN L

    IPC: H04W36/08 ,  H04W36/38 ,  H04W76/02 ,  H04Q7/22 ,  H04B7/26

    Abstract: An improved cellular telephone communication system is described having operational steps which prevent a call from being dropped due to a radiotelephone (130) not receiving a handoff instruction from its host base site (115). The system includes a switch controller (122) for determining that the radiotelephone requires a handoff from a first base site coverage area (110) to a second base site coverage area (112) and for communicating a handoff message to the associated first (115) and second base site equipment (119). The first base site equipment then transmits the handoff message to the radiotelephone. If the radiotelephone does not receive the message, it determines that the call has been lost, siezes a signalling channel from the second base site, and requests, via the second base site a call reconnection by transmitting a special message. The second base site then informs the radiotelephone of the handoff instruction and the handoff is completed with a successful reconnection of the call.

    INTERCONNECTING AND PROCESSING SYSTEM FOR FACILITATING FREQUENCY HOPPING
    6.
    发明专利
    INTERCONNECTING AND PROCESSING SYSTEM FOR FACILITATING FREQUENCY HOPPING 未知

    公开(公告)号：CA2071526C

    公开(公告)日：1995-03-28

    申请号：CA2071526

    申请日：1991-02-04

    Applicant: MOTOROLA INC

    Inventor： KOTZIN MICHAEL D ,  SPEAR STEPHEN L

    IPC: H01J3/24 ,  H04B3/60 ,  H04J3/00 ,  H04M7/00 ,  H04W88/08 ,  H04B7/12 ,  H04L9/18 ,  H04B7/26

    Abstract: The invention is a method and apparatus for facilitating frequency hopping of information in a system, without the use of a baseband hopping unit, by sharing a common TDM bus between a plurality of radio communication units, processing units, and information links. The system comprises an MSC (145) coupled to the information link (147), a common TDM bus (135, 150, 155, 140), processing units (210, 220), fixed tuned transmitters (215, 225) coupled to the fixed tuned cavity combiners (125, 130), which are coupled to the antennae (132, 134). Redundancy in the TDM buses (135, 150, 155, 140) is a mechanism for improving the fault tolerance of the system in case of TDM bus failure.

    METHOD AND APPARATUS FOR REDUCING AN AUDIO HOLE DURING HANDOFF IN A COMMUNICATION SYSTEM
    7.
    发明专利
    METHOD AND APPARATUS FOR REDUCING AN AUDIO HOLE DURING HANDOFF IN A COMMUNICATION SYSTEM 未知

    公开(公告)号：CA2142612A1

    公开(公告)日：1995-02-09

    申请号：CA2142612

    申请日：1994-07-05

    Applicant: MOTOROLA INC

    Inventor： SPEAR STEPHEN L

    IPC: H04W56/00 ,  H04B7/00 ,  H04W36/12 ,  H04W36/18 ,  H04B7/26 ,  H04Q7/22

    Abstract: METHOD AND APPARATUS FOR REDUCING AN AUDIO HOLE DURING HANDOFF IN A COMMUNICATION SYSTEM A communication system reduces audio holes due timing related to messaging and switching of ports during handoff. Additional resources are added between a base station controller (BSC) and a mobile switching center (MSC, 123) to aid in information transfer between a target BSC (120) and a source BSC (121) during handoff. By separating the timing problems related to each of the messaging and the switching of ports, the two are not able to compound one another, and the audio hole is subsequently reduced.

    INCREASED SPEECH INTERLEAVE WITH REDUCED DELAY
    8.
    发明专利
    INCREASED SPEECH INTERLEAVE WITH REDUCED DELAY 未知

    公开(公告)号：CA2126989A1

    公开(公告)日：1993-07-22

    申请号：CA2126989

    申请日：1993-01-12

    Applicant: MOTOROLA INC

    Inventor： SPEAR STEPHEN L

    IPC: H04W88/18 ,  H04B7/26

    Abstract: 2126989 9314584 PCTABS00024 A Time Division Multiple access radiotelephone system has a base transceiver that receives speech from, and sends speech to, the Public switched Telephone Network. The base transceiver encodes (CO, DEC) the speech in a 20 ms recurrent time slot for each associated mobile transceiver. The mobile transceivers transmit to the base transceiver on a paired full duplex radio link.

    10.
    发明专利
    未知

    公开(公告)号：FI885520A

    公开(公告)日：1989-07-30

    申请号：FI885520

    申请日：1988-11-28

    Applicant: MOTOROLA INC

    Inventor： SPEAR STEPHEN L

    IPC: H04W36/08 ,  H04W36/38 ,  H04W76/02 ,  H04Q

    Abstract: An improved cellular telephone communication system is described having operational steps which prevent a call from being dropped due to a radiotelephone (130) not receiving a handoff instruction from its host base site (115). The system includes a switch controller (122) for determining that the radiotelephone requires a handoff from a first base site coverage area (110) to a second base site coverage area (112) and for communicating a handoff message to the associated first (115) and second base site equipment (119). The first base site equipment then transmits the handoff message to the radiotelephone. If the radiotelephone does not receive the message, it determines that the call has been lost, siezes a signalling channel from the second base site, and requests, via the second base site a call reconnection by transmitting a special message. The second base site then informs the radiotelephone of the handoff instruction and the handoff is completed with a successful reconnection of the call.

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