| 摘要 |
The present invention relates to a wireless network system and a channel reallocation method based on a TV white space (TVWS) using the same. The channel reallocation method based on the TVWS of a wireless network system including a main PAN (Personal Area Network) and a plurality of sub PANs according to the present invention comprises the following steps: receiving a request for a channel reallocation from a lower-concentrator included in the sub PAN by an upper concentrator included in the main PAN; transmitting an idle channel list available to the lower concentrator, and receiving candidate channel information to allocate and network information from the lower concentrator; and reallocating the idle channel selected according to the priority decision algorithm among the candidate channels requested from the lower concentrator to the lower concentrator. According to the present invention, in case where a private network is built and used by a TVWS band, if a circumstance such that a channel allocated from an SPC (Super PAN Coordinator) has difficulty in maintaining a network due to complexity of a wireless environment of a channel for various reasons such as interference of the other wireless devices, a new channel is reallocated according to the wireless environment, thereby enhancing the stability of a network wireless environment. |
