Abstract:
본 발명은 방송정보 전송방법 및 이를 수행하는 중계기에 관한 것이다. 본 발명에 따르면, 중계기는 기지국으로부터 주기적으로 수신되는 하향링크 맵 정보요소로부터 하향링크 채널 식별자 및 상향링크 채널 식별자를 포함하는 방송정보와 해당 방송정보의 전송주기를 획득하고, 획득한 전송주기를 토대로 방송정보를 단말로 주기적으로 전송한다. 또한, 중계기는 기지국으로부터 수신되는 하향링크 맵 정보요소의 전송주기와 크기를 토대로 방송정보 또는 방송정보 전송주기의 변경을 인지하고, 이를 토대로 방송정보를 변경하거나 방송정보의 전송주기를 변경한다. 중계기, 방송정보, UCD, DCD, 하향링크 맵 정보요소
Abstract:
PURPOSE: A signal to interference noise ratio renewal method is provided to prohibit the transmission of the meaningless difference CINR in a terminal when renewal the CINR value thereby reducing the occupation of the unnecessary wireless resource. CONSTITUTION: A BS(Base Station) cancels the allocation of a channel for a report of differential Carrier to Interference plus Noise Ratio(S501). The base station indicates the report of the CINR about an AMC(Adaptive Modulation and Coding) sub channel to a terminal(S503). The terminal reports the CINR value measured in an arbitrary frame to the base station(S505). The base station assigns the channel for the report of the difference CINR to the terminal(S507). The terminal reports the difference CINR to the base station(S509).
Abstract:
PURPOSE: A packet transmission method divided in a mobile communication system and a system thereof are provided to reduce overhead by overlapping transmission of an IP header with overlapped division information about an upper link. CONSTITUTION: It is checked whether a divided packet is an end packet or not(S402,S403). In case the divided packet is not the end packet, the divided packet is successively saved in a buffer(S404). In case the divided packet is the end packet, the divided packet is reassembled(S405). The reassembled IP packet is transmitted to a base station. The reassembled IP packet is transmitted to a destination to be fragmented according to size of an MTU(Maximum Transfer Unit) in the base station.
Abstract:
PURPOSE: A method for analyzing an error performance of a convolution code is provided to very closely approach to a maximum of an actual error performance which a convolution code has, thereby analyzing a unique performance of the convolution code regardless of decoding algorithm. CONSTITUTION: An error analyzing device of a convolution code divides a route of the trellis diagram into a plurality of groups(S210). The device selects the minimum input(imind,N) among each groups of input weight(i)(S220). The device calculates an improve(d)(S230). The device calculates the c improve(d)(S240). The device calculates a maximum of the receive error probability(Pb) and maximum of an error probability(Pe)(S250). The device calculates maximun approximate values(Pbit,Pblock) of BER(Bit Error Rate) and BLER(Block Error Rate)(S260). The device analyzes an error performance of the convolution code (S270).
Abstract:
PURPOSE: A method and a relay station for broadcasting information transmission are provided to efficiently use bandwidth by transferring broadcasting information transmitted from a base station to a terminal periodically. CONSTITUTION: A broadcasting information transmission period is obtained(S103), and the broadcasting information is received from the base station based on the obtained broadcasting information transmission period(S104,S106). A relay station transmits the stored broadcasting information to a terminal periodically in correspondence to the reception point(S105,S107). Based on the sized of the downlink map information element, the repeater detects the change of the broadcasting information, and the stored broadcasting information is updated by obtaining the changed broadcasting information(S110).
Abstract:
A method for transmitting signals is provided to variously generate a modulating signal and a demodulating signal by changing a symbol offset during a modulating process and a demodulating process. A base station(100) encodes signals according to a predetermined code rate. A signal modulated by a first modulating method is received from the base station. The signal modulated by the first modulating method is demodulated by a method corresponding to the first modulating method. A demodulated signal is generated by the method. The predetermined code rate is continuously maintained. The demodulated signal is modulated by a second modulating method. A signal modulated by the second modulating method is transmitted to a mobile station(300). The second modulating method is different from the first modulating method.
Abstract:
The present invention relates to a URL providing apparatus and a method thereof, and a mobile station that accesses the Internet by using the provided URL, and an Internet access method thereof. The mobile station attaches an RF-ID tag that stores an RF-ID tag value corresponding to identification information of the mobile station thereto, and thus when a user brings the mobile station into an interrogation range of an RF-ID reader included in the URL providing apparatus, the URL providing apparatus receives the corresponding RF-ID tag value from the RF-ID reader. When the URL providing apparatus acquires an IP address of the mobile station by using the received RF-ID tag value and provides a URL to the mobile station by using the acquired IP address, the mobile station automatically accesses the Internet by using the URL. Such an Internet access method can minimize additional cost of the mobile station and simplify an Internet access process to a specific URL.
Abstract:
An apparatus and a method for analyzing performance of a modem, and a method for examining functions of the apparatus are provided to check up the performance of the modem and diagnose own functions by uploading and downloading modulated/demodulated signals and coded/encoded signals to analyze the signals. An incoming signal connector(300) receives modulated/demodulated signals and coded/decoded signals from a modem. An outgoing signal connector(400) transmits a standard signal generated from a host to the modem, so as to compare the performance of modems. A modem analysis processing unit(500) outputs the standard signal to the outgoing signal connector, and outputs modulated/demodulated signals or coded/decoded signals to the host. The host compares the modulated/demodulated signals or coded/decoded signals to the standard signal.
Abstract:
An apparatus and a method for providing a URL(Uniform Resource Locator), a mobile terminal for connection the Internet through the provided specific URL and an Internet connection method are provided to simplify the Internet connection procedures toward the specific URL and to minimize a burden of the additional cost. An RF(Radio Frequency)-ID(IDentification) reader(130) reads and outputs the RF-ID tag value corresponding to the ID information of a mobile terminal from an RF-ID tag attached to the mobile terminal. A site local server(120) transmits the RF-ID tag value received from the RF-ID reader to a company server(110) for keeping the IP(Internet Protocol) of the mobile terminal, receives the IP corresponding to the RF-ID tag value from the company server and offers the URL to the mobile terminal corresponding to the IP. The RF-ID reader transmits the identifier of the RF-ID reader when transmitting the RF-ID tag value. The site local server offers the URL corresponding to the ID of the RF-ID reader. The URL is a set value when setting the site local server and is differently set according to the ID.
Abstract:
A method for supporting sleep mode and a mobile terminal for the same are provided to minimize the time delay of data and maximize power-saving by adjusting the length of the initial sleep window in consideration of a burst traffic characteristic. A mobile terminal(100) for supporting sleep mode comprises a wireless transceiver part(140) and a control part(120). The wireless transceiver part(140) calculates an initial window value according to the burst arrival interval of received downlink data and sets up the sleep window value of the mobile terminal(100) according to the calculated initial window value. The control part(120) controls the mobile terminal's access to sleep mode according to the sleep window value received from the wireless transceiver part(140). The wireless transceiver part(140) comprises a MAC processing part(141). The MAC processing part(141) controls a sleep timer and measures elapsed time from when the downlink data are received. Based on the measured value, the MAC processing part(141) determines when to access sleep mode.