Abstract:
본 발명은 모바일 센서 네트워크에서의 다중 커버 레이어링 방법에 대한 것으로서, 보다 상세하게는 모바일 센서 네트워크에 구비된 각 이동 노드들이 임의의 그룹을 선택한 후 이웃한 노드들의 그룹정보를 수집하여 각 그룹에 위치한 노드들의 통계정보를 획득하고, 이 통계정보에 의해 지역적으로 균등한 그룹을 형성할 수 있는 적절한 그룹으로 이동하여 재그룹을 형성함으로써 센서 네트워크 전체적으로 효율적인 분산 레이어링을 수행할 수 있게 한 모바일 센서 네트워크에서의 다중 커버 레이어링 방법에 관한 것이다. 센서 네트워크, 노드, 다중, 커버, 레이어링
Abstract:
PURPOSE: A multi cover layering method in a mobile sensor network is provided to make regional balance of nodes distributed in a target region while changing a group to which neighbor nodes belong through statistics of the group. CONSTITUTION: Nodes select one of K groups by uniform probability(S100). The nodes are respectively located in the selected group. Group information is transmitted and received between the nodes(S210). A node number of a group of a corresponding node is compared with a node number average of all groups(S220). When the node number of the group of the corresponding node is higher than the node number average of all groups, the corresponding node changes the group of the corresponding node(S230).
Abstract:
PURPOSE: A method of hand over provided by mobile access gateway in a proxy mobile internet protocol environment using proxy mobile internet protocol and a mobile access gateway performing the same are provided to maintain transmission order of upload and download data during handover of a mobile terminal, thereby minimizing loss of data packet. CONSTITUTION: A tunnel(311) provides information transfer between a mobile access gateway(310) and one or more adjacency mobile access gateway adjacent to the mobile access gateway. A handover database(312) manages at least one of mobile terminal information connected to at least one of adjacency mobile access gateway and at least one of mobile terminal information connected to the mobile access gateway.
Abstract:
A Method for providing QoS to control packets in a congestion state in a wireless sensor network is provided to minimize throughput in the congestion state through a drop-tail queue where a quota is set up in the packet receiving terminal of a wireless sensor network terminal. A method for providing QoS(Quality of Service) to control packets in a congestion state in a wireless sensor network comprises the following steps of: registering an enqueue process for a corresponding packet in a process scheduler(204) by generating interrupt when the packet is received from a sensor; allowing the process scheduler to perform the enqueue process for the packet received through an enqueue process unit(206) according to the registered enqueue process; allowing an quota manager(300) to allocate a storage space for a control packet to an queue receiving unit(210) and storing successively the control packet and data packet received through the enqueue process unit, and registering a dequeue process unit(208) in the process scheduler; and allowing the process scheduler to control the dequeueue process unit and process packets in the queue receiving unit.