Abstract:
PURPOSE: A ranging message processing method in a base station is provided to rapidly execute a ranging procedure. CONSTITUTION: An upstream traffic subsystem determines whether a PDU(Protocol Data Unit) is reassembled through a header of the PDU(S440). The upstream traffic sub-system converts the PDU which is not necessary to be reassemble into an SDU(Service Data Unit)(S470). The upstream traffic sub-system transmits the SDU to an ACS(Access Control Subsystem) of the base station. The upstream traffic sub-system reassembles the PDU which is necessary to be reassembled. The upstream traffic sub-system converts the reassembled PDU into the SDU(S460). The upstream traffic sub-system transmits the SDU to the ACS. [Reference numerals] (AA) No; (BB) Yes; (S410) Receive an upward burst; (S420) Detect a burst group including RNG_REQ; (S430) Extract the PDU of the RNG_REQ; (S440) Is the extracted PDU reassembled?; (S450) Store in a queue; (S460) Convert into an SDU after the reassembly and transfer to an ACS; (S470) Convert into the SDU and transfer to the ACS
Abstract:
PURPOSE: Packet classifying apparatus and method are provided to reduce times required for processing a packet classifying operation according to a downlink packet by using one field of a generic routing encapsulation(GRE) header for accessing network. CONSTITUTION: A searching table(214) maps an accessing index responding to the flow of services and the first field value of a tunnel header. When a downlink packet is received from network through tunneling, a searching part(215) detects the first field value from the tunnel header of the downlink packet. The searching part searches the accessing index responding to the first field value from the searching table. A packet processor(216) transmits the downlink packet to the accessing index.
Abstract:
A wireless connection terminal unit is controlled to download a web page in portable Internet, the control apparatus including a HTTP packet analyzer for analyzing a starting a HTTP packet and a HTTP session management unit including a HTTP packet transmitting/receiving information table at which HTTP request packet information is recorded. The HTTP session management unit controls a HTTP session unit according to characteristics of a web page to be down-loaded such that resource maintenance can be efficiently performed and competition for establishing connection and time for downloading a web page can be reduced.
Abstract:
A method for updating a domain name server (DNS) address by obtaining the DNS address when an IP address is allocated by using a mobile IP address in a mobile terminal using the portable interne based on a wireless mobile network is provided. In the method at least one DNS address connected to the wireless mobile network is sampled (S400), a roundtrip delay to the respective sampled DNSs is calculated (S450), a DNS address having a minimum roundtrip delay is selected (S460), and a DNS address of the mobile terminal is updated to be the selected DNS address (S500).
Abstract:
A method for establishing a wireless connection performed by a subscriber station (SS) to receive Internet services from a given terminal node through a base station (BS), the method including: a) when an initial connection with the BS is established, establishing a first MAC connection with the BS, and setting the first MAC connection as a dedicated TCP connection; b) when a given packet is generated, the SS determining whether the given packet is a control packet for a TCP connection with the SS; c) transmitting the given packet through the dedicated TCP connection when a control packet is transmitted, and establishing a TCP connection with the SS; d) after establishing the TCP connection, establishing a second MAC connection for data communication between the SS and the BS; and e) after establishing the TCP connection and the second MAC connection, receiving data from the SS through the second MAC connection.
Abstract:
PURPOSE: A method for synchronizing a mobile terminal and a peripheral device on Bluetooth network and a computer-readable recording medium storing the same are provided to synchronize time of a peripheral device connected through Bluetooth with a mobile terminal synchronized with a GPS satellite. CONSTITUTION: A base station receives a UTC(Universal Coordinated Time) and 1PPS(Pulse Per Second) signal from a GPS satellite(S10) and a terminal receives reference time information from the base station(S11) so that it can be synchronized with the base station and the GPS satellite(S12). When the terminal transmits a Bluetooth connection request message to peripheral devices(S13), the peripheral devices transmit an authentication message with respect to the Bluetooth connection request(S14), so the Bluetooth connection is made between the terminal and the peripheral devices(S15). When the terminal transmits environment set information message to peripheral devices(S16), each peripheral device transmits environment set information change or authentication message to the terminal(S17), thereby completing environment setting(S18). The terminal periodically transmits time information to each peripheral device(S19,S20).
Abstract:
PURPOSE: A USB(Universal Serial Bus) drive method, and an embedded system adopting the method are provided to efficiently set an I/O scheme of a USB device at a user application program layer, and to minimize a code and a program size to be considered in an embedded system with limited resources. CONSTITUTION: A user application program enables a user to select an I/O scheme of a USB device, e.g a DMA(Direct Memory Access) scheme or a programmable scheme by using a standard I/O function of an OS(S10). An I/O control block within a USB device driver analyses parameters to be transferred simultaneously with the standard I/O function when the standard I/O function is called, checks whether a USB device related I/O request is transmitted(S20), and then analyses the parameters included in the standard I/O function(S30). In a case that the requested I/O scheme is set at a DMA scheme, the I/O control block sets a call back table of a DMA I/O scheme(S50). In a case that the requested I/O scheme is set at a programmable I/O scheme or a CPU bound I/O scheme, the I/O control block sets a call back table of a programmable I/O scheme(S60).