Lg Electronics Inc.

Lg-nortel Co., Ltd.

Jee Woong Seol

Ki Jun Kim

Young Hwan Kang

Young Woo Yun

Soon Yil Kwon

Cheol Woo You

Jong Hoe An

Chan Ho Kyung

Cheoi Woo You

A method for determining a data rate for transmitting traffic data from a mobile station to a base station in a mobile communication system includes steps of receiving data rate control information from at least one base station; obtaining, based on the received data rate control information, a maximum transmittable data rate; obtaining a plurality of data rates for transmitting traffic data to the at least one base station, the plurality of data rates being obtained by considering a status factor of the mobile station; and determining the data rate of the traffic data to the at least one base station by selecting one of the obtained maximum transmittable data rate and plurality of data rates. The method determines the reverse data rate based on data rate control information and according to its own status, to provide system stability and minimize interference with other mobile stations while increasing the throughput for the sector and maintaining a desired QoS level even when the mobile station transmits at less power while.

Method of determining reverse data rate in mobile communication system

A power control method of a forward-acknowledgement channel and an acknowledgement control method are provided by which acknowledgement or non-acknowledgement information can be received for a boost mode operation used for a quality of service (Qos). The power control method may include 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.

Method of power control and acknowledgement control for F-ACKCH

A method of generating data rate control information for a plurality of mobile stations within a sector of a mobile communication system enables a base station to efficiently maintain system stabilization in a current reverse link and satisfies a variety of QoS levels for a plurality of mobile stations in one sector. The method includes steps of calculating a priority for each of the plurality of mobile stations; calculating a system load of the sector; and setting, according to the respectively calculated priorities, data rate control information to be transmitted to each mobile station, whereby the system load falls between predetermined threshold values.

Method of generating reverse data rate information in mobile communication system

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.

Method of controlling reverse link data rate in a mobile communications system

A method of determining a packet data rate in a mobile communication system is provided. The method includes steps of estimating a channel reception status value after a predetermined time corresponding to a predetermined window size, by assigning a different weight factor to at least one channel reception status of an earlier time and to a channel reception status of a present time; determining a remainder value for adjusting a channel reception sensitivity value according to a decoding status of received packet data, by incrementing the remainder value when the received data packet is successfully decoded and otherwise decrementing the remainder value, i.e., when decoding is unsuccessful; calculating a threshold value for determining a packet data rate by applying the remainder value to the estimated channel reception status value; and determining a highest packet data rate among a set of values falling below a rate corresponding to the calculated threshold value. The threshold value is applied to the channel reception status value estimated for each predetermined window size.

Method for determining packet data rate in wireless communication system

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.

Reverse link data rate control method in mobile communication system

A method determines the data rate of traffic data to be transmitted from a mobile station to a base station in a mobile communication system, by considering a delay time required for the generation and transfer of data rate control information. The method includes steps of transmitting control information to the base station, the control information corresponding to the traffic data of an ith frame, the ith frame having a predetermined data rate; receiving, in response to the transmitted control information, data rate control information from the base station, the data rate control information including an instruction; and determining a maximum data rate of the traffic data to be transmitted during a next frame, by applying the instruction of the data rate control information to the predetermined data rate of the ith frame.

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.

Method of controlling transmission power of retransmission packet and mobile terminal using the same

Disclosed is a transmission diversity method in a mobile communication system, by which optimal transmission diversity can be provided in case that a base station of the mobile communication system uses at least one transmitting antenna. The present invention includes the step of having a transmitting side transmit signals using a plurality of antennas wherein a transmission signal of a second antenna differs from a transmission signal of a first antenna in a predetermined phase.

Transmission diversity method in mobile communication system

In an apparatus and method for performing a hand-off in a mobile communication system, a mobile terminal and two base stations transmit and receive two different transmission signals produced from a single communication signal in a soft hand-off processing, so that the reliability of the transmission signal and the transmission efficiency are improved without adding a particular hardware to the conventional communication system. In addition, the improvement of the reliability of the transmission signal is resulted in generation of gain in the aspect of the transmission power, the system performance or the user capacity.

Hand-off processing apparatus and method for telecommunication system

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.

Concatenated convolutional encoder and decoder of mobile communication system

The present invention relates to a transmission rate matching apparatus and a method thereof for a next generation mobile communication system. In the conventional technology, when data bit is transmitted from a terminal to a base station, it is transmitted by radio frames, each column of a block interleaver includes biased data bit. Accordingly, in order to solve above-mentioned problem, the transmission rate matching apparatus for the next generation mobile communication system in accordance with the present invention comprises an encoder for performing error-correction-encoding of an input bit column, and generating a code word bit from the error-correction-encoded input bit column, a block interleaver for being inputted the code word bit, storing it as row unit, and outputting it as column unit, a switching unit for performing a switching algorithm for converting an output sequence of the code word bit crossly and outputting them to the block interleaver in order to distribute the biased data bits included in the each column of the block interleaver uniformly when the number of the code word bit of the encoder and the number of the column of the block interleaver are not coprime, a radio frame segment processing unit for generating a radio frame after being inputted the column unit data outputted from the block interleaver, and a transmission rate matching unit for matching the data bits included in the radio frame to a transmission format suitable for a transmission between a terminal and a base station, and transmitting it.

Transmission rate matching apparatus and method for next generation mobile communication system

The present invention relates to a physical channel allocation method of a mobile communication system and a communication method using the same which is capable of allocating physical channels efficiently for a RACH (Random Access Channel) and a CPCH (Common Packet Channel) having extra up-link scrambling code in a next generation mobile communication system. The communication method of the mobile communication system in accordance with the present invention comprises transmitting a preamble signature code Csig,s generated by using one signature among a plurality of signatures AP&num;s and a PRACH (Physical Random Access Channel) access preamble code Cpre,n,s generated by using one PRACH preamble scrambling code SC&num;j among a x-number of PRACH preamble scrambling codes SC&num;m permitted to the pertinent cell along with an AP (Access Preamble) through a RACH from a terminal to a base station, receiving an AI (Acquisition Indicator) informing a usage of the signature by decoding a signature included in the received AP and the kind of the PRACH scrambling code from the base station by the terminal, and transmitting a message of the terminal to the base station by using a channelizing code determined by the approved signature and PRACH message part scrambling code MSC&num;m. Accordingly, the terminal and base station can communicate efficiently.

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Gunpo-si, South Korea

Jee Woong Seol