21.
    发明专利
    未知

    公开(公告)号:MX172939B

    公开(公告)日:1994-01-24

    申请号:MX2356590

    申请日:1990-12-03

    Applicant: MOTOROLA INC

    Abstract: In this invention a hierarchical addressing technique is employed in a packet communications system to enhance flexibility in handling packet information. This method permits packet message data (Fig. 3) and certain packet control data (Fig. 3) to be stored in memory locations (32, 34) without having to be duplicated at a different memory location prior to transmission of the packet. This method is preferably employed in a ring configuration in which a series of packets have addressing mechanisms which points sequentially to each other to form a ring of packets.

    SATELLITE NETWORK AND CELLULAR RADIO TELEPHONE SYSTEM

    公开(公告)号:HU9202844D0

    公开(公告)日:1992-12-28

    申请号:HU284492

    申请日:1991-03-01

    Applicant: MOTOROLA INC

    Abstract: There is provided a mechanism for networking satellite and terrestrial networks. It comprises: maintaining subscriber-received power levels of terrestrial network transmissions about one order of magnitude above co-channel satellite transmissions to overcome interference and maintaining subscriber transmissions to terrestrial networks at power levels about one order of magnitude of the below co-channel transmissions to satellite networks to avoid causing interference at the satellite. Such power level maintenance is provided by the network in communication with such subscriber. Moreover, a non-orbiting ("grounded") satellite cooperates as a switching node of both the satellite network and a terrestrial network to relay information between a terrestrial subscriber and the satellite radiotelephone network over a terrestrial network. The terrestrial network and the satellite network may communicate via either the inter-satellite spectrum or the terrestrial-to-satellite spectrum.

    23.
    发明专利
    未知

    公开(公告)号:BR9105907A

    公开(公告)日:1992-10-13

    申请号:BR9105907

    申请日:1991-09-25

    Applicant: MOTOROLA INC

    Abstract: An intelligent communcations node is capable of dynamically selecting frequency and time slot assignments for communications with remote communication devices having different communication protocols including different available frequencies and time slots in a TDMA system. A frequency agile transmitter and receiver combined with an adaptable time slot selector enables communications with remote devices utilizing different protocols. The time and frequency management capabilities of the node makes greater spectral efficiencies possible.

    24.
    发明专利
    未知

    公开(公告)号:MX9101459A

    公开(公告)日:1992-06-05

    申请号:MX9101459

    申请日:1991-10-04

    Applicant: MOTOROLA INC

    Abstract: An intelligent communcations node is capable of dynamically selecting frequency and time slot assignments for communications with remote communication devices having different communication protocols including different available frequencies and time slots in a TDMA system. A frequency agile transmitter and receiver combined with an adaptable time slot selector enables communications with remote devices utilizing different protocols. The time and frequency management capabilities of the node makes greater spectral efficiencies possible.

    RADIO TRANSMISSION WITH A SATELLITE

    公开(公告)号:CS58291A3

    公开(公告)日:1992-02-19

    申请号:CS58291

    申请日:1991-03-06

    Applicant: MOTOROLA INC

    Abstract: There is provided a mechanism for networking satellite and terrestrial networks. It comprises: maintaining subscriber-received power levels of terrestrial network transmissions about one order of magnitude above co-channel satellite transmissions to overcome interference and maintaining subscriber transmissions to terrestrial networks at power levels about one order of magnitude of the below co-channel transmissions to satellite networks to avoid causing interference at the satellite. Such power level maintenance is provided by the network in communication with such subscriber. Moreover, a non-orbiting ("grounded") satellite cooperates as a switching node of both the satellite network and a terrestrial network to relay information between a terrestrial subscriber and the satellite radiotelephone network over a terrestrial network. The terrestrial network and the satellite network may communicate via either the inter-satellite spectrum or the terrestrial-to-satellite spectrum.

    WAVEGUIDE ANTENNA WITH INCREASED GAIN

    公开(公告)号:AU613557B2

    公开(公告)日:1991-08-01

    申请号:AU5448690

    申请日:1990-04-16

    Applicant: MOTOROLA INC

    Abstract: An antenna is disclosed for increasing the gain of, or shaping the pattern of, a radiated radio frequency signal. The antenna includes a waveguide (10) for directing the radio frequency signal or for receiving directively the radio signal, a first conductive reflector (22) disposed beneath the waveguide and extending beyond the aperture (12) of the waveguide for reflecting certain of the waves emanating from or entering the aperture of the waveguide, and a second reflector (16) which may be the mounting surface, disposed beneath the first reflector and extending beyond the first reflector for reflecting other of the waves emanating from or entering the aperture of the waveguide.

    PACKET SIGNAL SWITCH FOR VOICE AND DATA

    公开(公告)号:HU906258D0

    公开(公告)日:1991-03-28

    申请号:HU625890

    申请日:1990-09-28

    Applicant: MOTOROLA INC

    Abstract: A network interface architecture for a packet/fast packet switch is described. This architecture provides for the combination of both voice and data in a single switch using a common packet structure. It allows for the dynamic allocation of bandwidth based on system loading. This includes not only bandwidth within the voice or data areas of the frame, but also between the voice and data portions. The network interface (105) provides a means (101) of passing all packets through the Network Interface (105) or allowing the packet devices to directly transfer packets between one another. The bandwidth allocation can easily be changed because the control and data memories are synchronized to one another. The architecture allows for the data packets and the control of bandwidth allocation to be controlled by a single switching device. It synchronizes the transfer of the data and the allocation of bus bandwidth. The control of the packet devices can be controlled at a very high bit rate such as 40 Mbps. It allows packet devices to directly transfer packets. It allows for easy re-allocation of bandwidth through the use of the NI Base Registers.

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