To improve throughput rates of packets transmitting positive train control (PTC) messages in an asynchronous wireless network that supports controlling movement of trains, data rates are adjusted based one or more conditions of the link. Modulation and coding schemes with less overhead can be employed to increase the data rate at which information is transferred when an estimated link quality or conditions are relatively good. Conversely, when the estimated link quality is relatively poor, more robust modulation and coding schemes for transmissions can be used to maintain link performance but at the cost of reduced data rates. Optionally, if the estimated link quality is higher than required to achieve a predefined maximum transmit rate at a given default power rate, transmit power can be reduced to that necessary for transmit at the predefined maximum transmit rate.


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    Titel :

    ADAPTIVE CODING, MODULATION, AND POWER CONTROL FOR POSITIVE TRAIN CONTROL SYSTEMS


    Weitere Titelangaben:

    CODAGE ADAPTATIF, MODULATION ET CONTROLE DE PUISSANCE POUR DES SYSTEMES DE COMMANDE INTEGRALE DES TRAINS


    Beteiligte:
    SIRIWONGPAIRAT WIPAWEE (Autor:in) / HIMSOON THANONGSAK (Autor:in) / WU BO (Autor:in) / CAI JING (Autor:in)

    Erscheinungsdatum :

    2022-05-04


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze / B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / H04B TRANSMISSION , Übertragung



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