Abstract: The present invention relates to a one-way wave equation prestack depth migration method using an elastic generalized-screen (EGS) wave propagator capable of efficiently expressing the movement of an elastic wave passing through a mutual mode conversion between a P-wave and an S-wave while propagating boundary surfaces of an underground medium, by expanding, to an elastic wave equation, a conventional scalar generalized-screen (SGS) technique capable of quickly calculating the propagation of a wave in a medium in which there is a horizontal speed change, and according to the present invention, provided is a prestack EGS migration method for seismic wave multi-component data, which: can calculate a wave field with higher accuracy in a medium having a complex structure by expanding up to a second term of a Taylor series expansion of a vertical slowness term of a propagator; includes a mode separation operator in the propagator so as to directly use a shot gather as a migration input, without the need to separat

Abstract: The present invention provides a power control method of a forward-acknowledgement channel and acknowledgement control method thereof, by which acknowledgement or non-acknowledgement information for a boost mode operation used for a quality of service (Qos) can be efficiently received. The present invention includes the steps of receiving packet transmission information in a base station and determining a power of a transmission signal transmitted via the forward-acknowledgement channel (F-ACKCH) using an increment for a reference transmission power value of a boost mode in case that the packet transmission control information contains a boost operation.

Abstract: The present invention provides a method of controlling a reverse data rate in a mobile communication system. In controlling a reverse data rate by a mobile station of a mobile communication system supporting a H-ARQ system, the present invention includes the steps of receiving a grant message including reverse data rate control information and application range indication information from a base station and controlling the reverse data rate according to the reverse data rate control information included in the grant message, wherein if the application range indication information indicates that contents of the grant message are applied to a corresponding ARQ-channel at a moment of receiving the grant message only, an application range of the contents of the grant message is limited to a prescribed range even if receiving a NAK signal from the base station at a time point of receiving the grant message. Preferably, the prescribed range is an ARQ-channel unit group.

Abstract: The transmission power of a retransmission packet is controlled in the event of a packet retransmission request being sent from a receiving side in a wireless mobile communication system supporting hybrid automatic retransmission request (HARQ) transmission. In a method of controlling transmission power of retransmission packets by a mobile terminal in a wireless mobile communication system supporting hybrid automatic retransmission request (HARQ) transmission, the method includes steps of receiving, from a base station, gain information associated with the sequence of the retransmission packets; determining, using the gain information, transmission power of one of the retransmission packets; and transmitting the retransmission packet with the determined transmission power.

Abstract: A method for performing reverse link power control by determining the state of a reverse link data rate control bit in a mobile station according to variable thresholds that are set according to the size of a data packet to be transmitted. By considering the size of the data packet to be transmitted when setting the thresholds used to determine the state of the rate control bit, the increased sensitivity at higher data packet sizes of system stability to an incorrect determination of the state of the rate control bit may be accommodated. Furthermore, when a mobile station is located within a soft handoff area, the number of base stations transmitting rate control bits to the mobile station is considered when setting the variable thresholds.

Abstract: The present invention relates to a concatenated convolutional encoder and decoder for the next generation mobile communication system requiring a high performance channel coding, in particular to a concatenated convolutional encoder and decoder of a mobile communication system which is capable of providing a dual mode encoder and decoder for supporting both a parallel concatenated convolutional code and a serially concatenated convolutional code and improving the performance of the system by using punctured and thrown away sequence in a convolutional encoder. The present invention can show stable performance regardless of SNR, accordingly the credibility of the system can increase.

Abstract: A method of controlling a reverse link data rate, A method of controlling reverse link data rate in a mobile communication system supporting hybrid automatic retransmission request (HARQ) transmission is provided, by which a single grant message is transmitted via a forward grant channel to control a reverse link data rate of a plurality of subchannels of a reverse packet data channel. The method includes steps of generating rate control information for determining a data rate for transmission by a mobile station via a reverse traffic channel; and transmitting to the mobile station a message including the generated rate control information and subchannel information, the message corresponding to a series of subchannel transmissions to which the determined data rate will be applied.