摘要:
An interworking network system between heterogeneous networks and a vertical hand-off method for supporting QoS are provided. WLAN (Wireless Local Area Network) and Wibro (Wireless Broadband) have a service range overlaid with that of the CDMA (Code Division Multiple Access) 2000 that has been provided over the whole area, and routers of the respective networks are hierarchically connected by setting the CDMA 2000 as a higher network, the WiBro as a middle network, and the WLAN as a lower network according to service area and transmission speed of the respective networks. Accordingly, a hierarchical interworking method has been provided as an integrating network of the CDMA 2000, WiBro, and WLAN independently providing a service so that it may minimize packet loss and delay.
摘要:
A paging method and apparatus for minimizing power consumption under a heterogeneous wireless network environment is provided. The terminal can recognize data reception from the heterogeneous network using a CDMA2000 network having a wide service range under a heterogeneous wireless network environment terminal, and can open only necessary network interfaces at a predetermined time.
摘要:
In a heterogeneous wireless network system, a apparatus for notifying a mobile station of existence of traffic from a network to which the mobile station is not connected receives an identifier of the mobile station from the network to which the mobile station is not connected. The apparatus checks the network to which the mobile station having the same identifier as the received is connected, and transmits a signal for indicating existence of traffic to the mobile station by using the network's interface.
摘要:
The present invention relates to a binding update identifier sub-option field configuration method and a binding update information configuration method. In the method, a binding update identifier sub-option field including current used interface and data characteristics and corresponding to one interface of the plurality of interfaces is generated, the binding update identifier sub-option field is transmitted to a home agent and a correspondent node, a care-of address corresponding to a binding update identifier is stored, and binding update is performed.
摘要:
A paging method and apparatus for minimizing power consumption under a heterogeneous wireless network environment is provided. The terminal can recognize data reception from the heterogeneous network using a CDMA2000 network having a wide service range under a heterogeneous wireless network environment terminal, and can open only necessary network interfaces at a predetermined time.
摘要:
A method and apparatus of accessing a channel in a wireless local area network is provided. A destination station receives a request to send (RTS) frame to allocate a network allocation vector from a source station over a first bandwidth and transmits a clear to send (CTS) frame over a second bandwidth to the source station in response to the RTS frame. The second bandwidth is dynamically determined when a first parameter has a predetermined value.
摘要:
Provided is an apparatus for searching accessible wireless networks in a software-defined radio (SDR) terminal, a method thereof, and a computer-readable recording medium for storing a program executing the method. The apparatus includes: a hardware platform; a network search executable code storing means for storing a network search executable code having at least one of mode search executable codes; a search shape information storing unit for storing search shape information necessary for network search; a network search control means for arranging each of the mode search executable codes from the network search executable code storing means at the hardware platform by using the search shape information from the search shape information storing means and searching a network according to a search mode by executing the arranged mode search executable codes; and a network search result storing means for storing network search results from the network search control means.
摘要:
The present invention relates to a method for establishing a connection between heterogeneous user-networks and a domain name system proxy server for controlling the same. The present invention has features of providing a method for supporting communication between user-computers included in Internet-compatible heterogeneous networks through a gateway based on an Internet public network and a domain name system proxy server for controlling the method. According to the present invention, supporting mutual communication between various networks based on one network can be expected.
摘要:
The optimal direction-based flooding method for relaying a broadcast message for mobile ad-hoc networks comprises (a) an original source node selecting a first relay node; (b) selecting a message relaying direction into an area divided by a predetermined interval; (c) relaying the broadcast message by selecting the first relay node set for each message relaying direction; and (d) selecting a next relay node and relaying the broadcast message received by the previously selected relay node. Duplicated broadcast message transmissions, and competition and collision among the nodes to obtain transmission media, are reduced by transmitting the broadcast message using a minimum number of nodes in a mobile ad-hoc network including nodes having limited resources.
摘要:
A switch control method for DTMF service in a mobile switching center, is disclosed including the steps of (a) calling an ARS service system in a mobile station receiving, by a switch controller of an mobile exchange, a switch connection request for DTMF service input through a call controller of the mobile exchange through a base station if DTMF service is requested from the mobile station allocating a channel, requesting connection a lower-order processor; and sending a response after connection to the mobile station; and (b) receiving and processing a switch release request input to the call controller through the mobile station during communication after the step (a).