| 摘要 |
A method for transmitting data and compensating for a propagation delay in a point-to-multipoint data communication network is provided. The method for transmitting data in a point-to-multipoint data communication network which includes a network access point and a first through an Nth (N is 2 or a higher positive integer) station that communicate each other through a shared transmission medium, the data transmission method, wherein the station determines time to transmit its data to the network access point based on time when the station receives transmission timing information from the network access point. In a point-to-multipoint data communication network which includes a network access point and a first through an Nth (N is 2 or a higher positive integer) station that communicate each other through a shared transmission medium, a propagation delay compensation method in case transmission timing information of an upstream channel for station that receives connection ID from the network access point is set, the method includes (a) transmitting a map message, which includes a maximum propagation delay time and an offset time, as the transmission timing information, (b) transmitting data after the offset time passes from time the transmitted map message is received, and (c) forecasting an actual propagation delay time by reflecting gap between actual time the transmitted data is received and expected time the transmitted data is expected to be received, and the forecasted delay time and the offset time update the map message. Therefore, overhead can be minimized and the network utilization efficiency, that is, the data transmission efficiency can be maximized.
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