A method of allocating channel resources from a first device to a second device in a wireless network comprises receiving channel resource allocation information from a coordinator of the wireless network to allocate the channel resources; transmitting data to the second device through the allocated channel resources; receiving channel resource request information from the second device to request the first device to allocate a part of the allocated channel resources; and deciding whether to allocate the part of the channel resources allocated from the coordinator, to the second device in accordance with the channel resource request information.