Patent ID: 8654671

Claim:
A system for QoS (Quality of Service) support in a ubiquitous sensor network which provides communication between a plurality of nodes configuring one network, the system comprising: a mesh coordinator for coordinating a superframe including a QoS data slot and synchronizing the superframe and each of nodes within the network, wherein the mesh coordinator comprises a beacon frame control unit for creating a beacon frame for each node, including information about whether QoS has been set, a communication unit for broadcasting the created beacon frame in the superframe, creating a QoS data frame having a set priority, and transmitting the created QoS data frame in the QoS data slot of the superframe; a beacon scheduling information control unit for transmitting beacon scheduling information to neighboring nodes and for informing the neighboring nodes that QoS data will be transmitted through the superframe, with the beacon scheduling information control unit comprising its own beacon slot information and beacon slot information about the neighboring nodes, such that in response to the beacon slot information provided by said beacon scheduling information control unit the neighboring nodes determine their beacon slots, and wherein the mesh coordinator or each of the nodes arrange a plurality of data frames in order of higher priority when the QoS is set and a plurality of data frames is received with the plurality of data frames being transmitted by the communication unit to other nodes in the arranged order of the higher priority and with the mesh coordinator further comprising a QoS data processing unit for allocating priority in the transmission of data between QoS data and common data with common data representing data which is not QoS data such that QoS data is transmitted by the mesh coordinator in the created QoS data frame in the QoS data slot of the superframe in order of higher priority before common data is transmitted and when the QoS has not been set data is transmitted by the mesh coordinator as common data and wherein a priority of the QoS data frame is set by the mesh coordinator for every node or by default for every node.