| 摘要 |
There is provided a network apparatus in which a contention free period is fixed at a relatively maximum size and guaranteed time slots are varied in the fixed contention free period to allocate remaining time slots of the contention free period to data transmissions of terminals according to priority. There is provided a network apparatus for accessing a channel in a contention free period, the method including: a coordinator fixing a contention free period within a frame to have a preset size and setting and allocating guaranteed time slots (GTSs) in the fixed contention free period according to request; and a terminal group having at least one terminal, forming a network with the coordinator, requesting guaranteed time slots from the coordinator, and transmitting data in allocated guaranteed time slots.
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