Chung Ang University Industry Academic Cooperation

Agency for Defense Development

Jung-Ryun Lee

Hyun-Ho Choi

Hyun-Sik Kang

Yong-Soo Cho

Oh-Young Song

Myoung-Hun Han

Yun-Jae Shin

Bong-Soo Roh

Jeung-Won Choi

Un-Ha Kim

A method and system for providing a bio-inspired routing protocol using overhearing and probabilistic path finding in a mobile ad hoc network is provided, which can provide correct routing information for a destination, prevent a stagnation problem that repeatedly finds the same path because path finding depends mainly on regular pheromone values, also prevent the unnecessary creation of proactive ant packets and the increase of overhead which are caused by the stagnation problem, and decrease the probability with which an alternative path to be used in the event of link failure cannot be secured in advance.

Method for providing bio-inspired routing protocol using overhearing and probabilistic path finding in mobile ad hoc networks and system thereof

A method and a system for synchronizing time information in an ad-hoc network are disclosed. According to the present invention, provided is a method for synchronizing time information in an ad-hoc network as a method by which a plurality of nodes included in an ad-hoc network synchronize a time, the method comprising the steps of: transmitting, by a first node, time information obtained by correcting an initial time using a first self-correcting value at an nth beacon interval, wherein the first self-correcting value is a self-correcting value or a local averaging value at an (n&#x2212;1)th beacon interval; and correcting, by a second node which has received the time information from the first node at the nth beacon interval, time information by calculating a second self-correcting value and a local average value, wherein the first self-correcting value is either the self-correcting value or the local averaging value calculated at the (n&#x2212;1)th beacon interval, and the local averaging value of the second node is an averaging value of time information of one or more neighboring nodes of the second node.

Method and system for synchronizing time information in ad hoc network

A mobile terminal and a handover method for the mobile terminal are disclosed. A mobile terminal according to an embodiment of the invention may include: a communication unit configured to receive from a base station multiple frames, each belonging to one of two or more frame in a set order of priority; and a control unit configured to control the mobile terminal to perform a handover to a base station based on the occurrence pattern of frame types of the multiple frames.

Mobile terminal and handover method of the mobile terminal

A mobile terminal and a handover method for the mobile terminal are disclosed. A mobile terminal according to an embodiment of the invention may include a control unit configured to control the mobile terminal to perform a handover to a base station based on at least one of an on-off traffic characteristic of downlink data received from the base station and an on-off traffic characteristic of uplink data transmitted to the base station. When certain aspects of the invention are applied, the amount of data loss during a handover can be minimized.

Mobile terminal and handover method for the mobile terminal

Growing community of inventors

Seoul, South Korea

Jung-Ryun Lee