TRANSMITTER, TRANSMISSION METHOD, RECEIVER, RECEPTION METHOD, AND COMMUNICATION METHOD

    公开(公告)号:EP3796563A1

    公开(公告)日:2021-03-24

    申请号:EP19802886.2

    申请日:2019-05-07

    IPC分类号: H04B1/7143 H04W74/08

    摘要: The present technology relates to a transmission device, a transmission method, a reception device, a reception method, and a communication method capable of shortening a pause time of data transmission.
    According to an aspect of the present technology, a transmission device classifies channels usable for data transmission into a plurality of groups, selects the channels that are used in transmission units and that continue on a time axis from the channels of the different groups in accordance with an identifier, and performs the data transmission of the transmission units by using the selected channels. It is possible to make application to a communication system transmitting data through one-way communication from a transmission device to a reception device.

    COMMUNICATION METHOD, COMMUNICATION DEVICE, AND NETWORK DEVICE

    公开(公告)号:EP3736992A1

    公开(公告)日:2020-11-11

    申请号:EP18904735.0

    申请日:2018-02-12

    IPC分类号: H04B1/7143 H04W74/08

    摘要: This application provides a communication method, a communications device, and a network device. The method includes: determining, by a terminal device, a random access preamble, where the random access preamble includes six symbol groups; determining, by the terminal device, a frequency location of the random access preamble based on random access configuration information and a preset rule, where a frequency hopping interval between a first symbol group and a second symbol group and a frequency hopping interval between a fifth symbol group and a sixth symbol group are equal and both are first intervals, a frequency hopping interval between the second symbol group and a third symbol group and a frequency hopping interval between a fourth symbol group and the fifth symbol group are equal and both are second intervals, and a frequency hopping interval between the third symbol group and the fourth symbol group is a third interval; and sending, by the terminal device, the random access preamble based on the frequency location. According to the communication method in this application, the terminal device determines a frequency hopping pattern of the random access preamble, to send the random access preamble and perform random access.

    HIGH BANDWIDTH CHANNEL IN A FREQUENCY HOPPING SYSTEM

    公开(公告)号:EP3525383A3

    公开(公告)日:2019-12-25

    申请号:EP19156484.8

    申请日:2019-02-11

    申请人: Ademco Inc.

    摘要: A building automation system includes a host device and a plurality of client devices that can communicate with the host device via a frequency hopping protocol. The host device is configured to create and/or store a frequency hopping sequence including a plurality of ordered predetermined frequencies, and listens for communications from the plurality of client devices. Each cycle through the frequency hopping sequence is considered to be a channel. The host device may define a plurality of channels, with some of the plurality of channels reserved for routine messaging between the host device and the plurality of client devices and some of the plurality of channels reserved at times for higher bandwidth data communications.

    COMMUNICATION SYSTEM, COMMUNICATION DEVICE, COMMUNICATION METHOD, HOPPING PATTERN DETERMINING METHOD AND PROGRAM

    公开(公告)号:EP3474457A1

    公开(公告)日:2019-04-24

    申请号:EP17812919.3

    申请日:2017-02-15

    IPC分类号: H04B1/7143

    摘要: There are provided a communication system, a communication apparatus, a communication method, a hopping pattern determining method, and a program for suitably setting a hopping pattern of frequencies for data communication. A hopping pattern data storing part (80) stores hopping pattern data denoting the hopping pattern of frequencies for data communication. A frequency switching part (98) switches the frequencies for data communication with a communication part in accordance with the hopping pattern. A reception part (86) receives a signal transmitted at frequencies different from those of the hopping pattern over a period where data communication is not performed. A hopping pattern determining part (90) determines a new hopping pattern on the basis of reception quality of the signal received by the communication part.

    Frequency hopping sequence generation

    公开(公告)号:EP2942873B1

    公开(公告)日:2018-10-31

    申请号:EP15150968.4

    申请日:2015-01-13

    申请人: Itron Global SARL

    发明人: Picard, Gilles

    IPC分类号: H04B1/7143

    CPC分类号: H04B1/7143 H04B1/7156

    摘要: Techniques for frequency-hopping sequence-generation are described herein. In one example, a sequence of pseudo random numbers may be used to generate a scrambling sequence. The scrambling sequence may be used to map an unscrambled sequence of channels into a scrambled sequence of channels. Channel-repeats may be detected in the scrambled sequence of channels and resolved. Channel whitening may be performed to reduce channel overuse resulting from the channel-repeat resolutions. The scrambled sequence of channels may be provided to a radio to enable the radio to tune to the channels indicated by the scrambled sequence of channels.