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公开(公告)号：US11323168B2
公开(公告)日：2022-05-03
申请号：US17091442
申请日：2020-11-06
摘要： A communication system comprises an access point communicating via a directional beam and a first and second wireless modem for establishing a first and respectively second mm wave radio communication link to the first access point. The first and second wireless modems are located on a vehicle and employ electronically steerable beamforming directional antennas having a first main beams for establishing the radio communication links A proximity detector detects proximity of the first wireless modem to the first access point. A switch controller switches data of a data flow from the first mm wave radio communication link to the second mm wave radio communication link in response to the detection of the proximity of the first wireless modem to the first access point.
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公开(公告)号：US11246082B1
公开(公告)日：2022-02-08
申请号：US17062134
申请日：2020-10-02
摘要： A communication system supports communication between an end node (101) of a vehicle (103) and a remote correspondent node (105) via a fixed network (107) which comprises a plurality of wireless access points (109) with a directional antenna arrangement for mm wave radio communication using directional beams. A vehicle (103) comprises wireless modems (111, 113, 701, 703) employing electronically steerable beamforming directional antennas for establishing mm wave radio communication links to the access points (109). The air interface communication may use a frequency channels selected from a set of available frequency channels and using a transmission scheme from a set of available transmission schemes. The access points (109) transmit a first beacon data set in a frequency channel using a common transmission scheme and a second beacon data set using a different transmission scheme which is also used for data communication. The first beacon data set comprises an indication of the transmission schemes used for data communication for the access point (109).
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公开(公告)号：US11330601B2
公开(公告)日：2022-05-10
申请号：US16970802
申请日：2019-02-20
摘要： A method of mitigating start-of-packet interference in a millimetre waveband wireless mesh communications network which comprises a first plurality of network node devices each having a transceiver unit which includes a beamforming antenna device, and a second plurality of millimetre waveband wireless communications links each of which interconnects a respective pair of the transceiver units of the network node devices, the method comprising: allocating respective baseband centre frequencies to pairs of transceivers of the network node devices, which baseband centre frequencies are for use with respective communications links of the network, each such allocated baseband centre frequency being offset from at least one other allocated baseband centre frequency by a respective predetermined offset amount; and at a first transceiver of a selected pair of transceivers, encoding a data packet using an encoding signal having the baseband centre frequency allocated to the selected pair of transceivers, to generate an encoded signal.
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公开(公告)号：US11063639B1
公开(公告)日：2021-07-13
申请号：US17090057
申请日：2020-11-05
摘要： A communication system supports communication between an end node of a vehicle and a remote correspondent node via a fixed network which comprises a plurality of wireless access points with a directional antenna arrangement for mm wave radio communication using directional beams. A vehicle comprises wireless modems employing electronically steerable beamforming directional antennas for establishing mm wave radio communication links to the access points. The access points communicate in a frequency channel alternately selected from one of two disjoint sets and a first wireless modem (111) is constrained to communicate using a frequency channel from the first set and a second wireless modem (701) is constrained to communicate using a frequency channel from the first set. A data session controller (705) communicates data of the data session over links provided by the first wireless modem and the second wireless modem.
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