| Patent Number |
Title Of Patent |
Date Issued |
| 7602843 |
Apparatus and method for transmitting/receiving channel quality information in a communication s |
October 13, 2009 |
| An apparatus and method for transmitting/receiving channel quality information (CQI) in a communication system having a frame including subchannels corresponding to the same frequency reuse factor or different frequency reuse factors. A base station (BS) allocates at least one of the |
| 7567639 |
Method and apparatus for generating preamble sequence for adaptive antenna system in orthogonal |
July 28, 2009 |
| Disclosed is a method and an apparatus for generating a preamble sequence for an adaptive antenna system supporting a space division multiple access in an OFDMA communication system. Particularly, disclosed is a method for forming a preamble sequence identifying each of a plurality of |
| 7564909 |
Apparatus and method for detecting ranging signal in an orthogonal frequency division multiple a |
July 21, 2009 |
| An apparatus and method for receiving a ranging signal in an OFDMA mobile communication system are provided. The ranging signal receiving apparatus including, a ranging subchannel extractor for extracting subcarrier values with a ranging signal from a (FFT) signal; a plurality of mul |
| 7561628 |
Apparatus and method for cell acquisition and downlink synchronization acquisition in a wireless |
July 14, 2009 |
| An apparatus and method for cell acquisition and downlink synchronization acquisition in an OFDMA wireless communication system are provided. In an SS apparatus in a broadband wireless communication system, a preamble subcarrier acquirer extracts subcarrier values having a preamble code |
| 7558535 |
Apparatus and method for adaptively changing uplink power control scheme according to mobile sta |
July 7, 2009 |
| An apparatus and method for changing an uplink power control scheme according to mobile status in a TDD mobile communication system are provided. A subscriber station transmits to a base station a power control change request message including information about a requested power cont |
| 7542530 |
Apparatus and method for controlling a digital automatic gain controller in an orthogonal freque |
June 2, 2009 |
| An apparatus and method for controlling a digital AGC in a communication system in which power changes significantly from frame to frame. In the digital AGC controlling apparatus, an SNR estimator estimates an uplink SNR of a next frame. A power measurer measures uplink received power of |
| 7505417 |
Method and apparatus for controlling packet transmission in a mobile telecommunication system |
March 17, 2009 |
| A method of adapting a mobile telecommunication system to channel conditions. To control transmission of a data packet from an access network (AN) in both a link adaptation scheme and an ARQ (Automatic Repeat reQuest) scheme, an access terminal (AT) compares the received power of a f |
| 7412242 |
Apparatus and method for controlling transmission power in communication systems using orthogona |
August 12, 2008 |
| Disclosed is a method for controlling transmission power to be allocated to sub-carrier signals in a cellular communication system capable of dividing a frequency band into a plurality of sub-carrier bands and multiplexing the sub-carrier signals of the sub-carrier bands based on mul |
| 7394793 |
Method and apparatus for generating preambles in a broadband wireless communication system using |
July 1, 2008 |
| A preamble generation method and apparatus are provided for improving transmit diversity by changing a preamble structure in a broadband wireless communication system using multiple antennas based on a multiple input multiple output (MIMO) scheme. First pilot tones associated with di |
| 7373150 |
Method and system for allocating frequency resources based on multiple frequency reuse factors i |
May 13, 2008 |
| Disclosed are a system and a method of allocating frequency resource in a cellular communication system. The method includes the steps of dividing a predetermined time duration into at least two sub-time durations, and forming the frequency resource by applying mutually different frequen |
| 7349714 |
Power control apparatus and method in a wireless communication system using scheduled packet dat |
March 25, 2008 |
| Disclosed is a method for handing-off a mobile station receiving packet data over a second channel from a first base station system (BSS) to a second BSS by a base station controller (BSC) in a system in which the mobile station communicates with the first BSS and the second BSS adja |
| 7324618 |
Apparatus and method for canceling narrow-band interference in a mobile communication system |
January 29, 2008 |
| An apparatus and method for canceling narrow-band interference in a wideband mobile communication system. The apparatus includes a down converter for down converting a received signal into a baseband signal, an analog-to-digital converter for converting the baseband signal into a dig |
| 7298773 |
Apparatus and method for reporting service load to mobile station in mobile telecommunication sy |
November 20, 2007 |
| There is provided a method and apparatus for selecting an appropriate base station and an optimal data rate to provide a voice service and a data service based on a voice service load in a CDMA system. A base station transmits two pilot signals orthogonally spread with different orthogon |
| 7292877 |
Apparatus and method for calibrating and compensating for distortion of an output signal in a sm |
November 6, 2007 |
| Disclosed is an apparatus and method for calibrating and compensating for distortion of an output signal to an antenna in a mobile communication system with a smart antenna array. A calibration signal generator generates an extended Walsh code by extending a Walsh code used in the mo |
| 7227836 |
Rate control device and method for CDMA communication system |
June 5, 2007 |
| A traffic channel transmission device for a CDMA communication system using a plurality of coding rates and orthogonal codes, determines a present channel condition and adaptively selects a coding rate and an orthogonal code according to the determination. In the device, a channel re |
| 7177342 |
Apparatus and method for transmission beam forming of antenna array in a mobile communication sy |
February 13, 2007 |
| An apparatus and method in which a base station transmitter transmits the common beam to all mobile stations in a base station via an antenna array having at least two antennas, and forms a traffic beam according to a position of each mobile station. The base station transmitter determin |
| 7085254 |
Apparatus and method for gated transmission in CDMA communication system |
August 1, 2006 |
| A method for transmitting a frame comprised of a plurality of slots over a dedicated control channel in a duration where there is no transmission message from a mobile station to a base station. Each slot in the frame is comprised of a first slot duration and a second slot duration. The |
| 7072324 |
Device and method for providing time switched transmission diversity in mobile communication sys |
July 4, 2006 |
| The invention provides a method and apparatus for transmitting signalling information to a receiver using a plurality of transmission antennas in a time switching configuration. The apparatus includes a controller for generating a switch controlling signal in a non-overlapped time cycle |
| 7065700 |
Encoding apparatus and method in CDMA communication system |
June 20, 2006 |
| There is provided an encoding apparatus and method in a CDMA communication system. To encode input information of a k-bit sequence and generate a codeword with length N>(2.sup.k-1), an encoder encodes the input information using an (r, k) simplex code and generates a sequence of code |
| 7065060 |
Apparatus and method for gating transmission of a data rate control channel in an HDR mobile com |
June 20, 2006 |
| A communication method in a mobile communication system in which an access terminal transmits to an access network DRC information indicating a selected one of forward data rates requested by the access terminal is provided. The access network designates a DRC information length DRC |
| 7016323 |
Apparatus and method for transmitting forward link data to a handoff mobile station in a CDMA co |
March 21, 2006 |
| An apparatus and method for transmitting forward link data to a handoff mobile station in a CDMA communication system. A service sector for the handoff mobile station registers the other sectors in the active set of the handoff mobile station as idle sectors upon request of a data servic |
| 7002901 |
Apparatus and method for transmitting and receiving data in a CDMA communication system |
February 21, 2006 |
| A method for assigning orthogonal codes used for a first system and a second system in a CDMA system including channels of the first system for spreading a pilot signal, a sync signal, a paging signal and a traffic signal with a first set of orthogonal codes corresponding to orthogonal |
| 6993062 |
Forward link device of multicarrier communication system and method for realizing the same |
January 31, 2006 |
| A forward link device of a multicarrier CDMA communication system with an overlay scheme in which a multicarrier system and an IS-95 system share same frequency bands. In the forward link device, four encoders encode input data of corresponding rates with a 1/3 coding rate, respectively. |
| 6950632 |
Transmitting and receiving device and method for continuous outer-loop power control while in DT |
September 27, 2005 |
| A device and method for continuous outer-loop power control on a physical channel which transmits only power control bits and no data while in discontinuous transmission (DTX) mode in a CDMA mobile communication system is disclosed. In the power controlling device according to one as |
| 6937640 |
Apparatus and method for reporting service load to mobile station in mobile telecommunication sy |
August 30, 2005 |
| There is provided a method and apparatus for selecting an appropriate base station and an optimal data rate to provide a voice service and a data service based on a voice service load in a CDMA system. A base station transmits two pilot signals orthogonally spread with different orthogon |
| 6917607 |
Apparatus and method for gated transmission in CDMA communication system |
July 12, 2005 |
| An apparatus and method for gated transmission in a CDMA communication system. A mobile station in the CDMA communication system transmits a reverse pilot signal at a reverse gating rate different from a forward gating rate in a gated mode in a control hold state, and a base station |
| 6865397 |
Forward link power control device and methods for a mobile communication system supporting trans |
March 8, 2005 |
| A forward link power control device for a mobile communication system supporting a transmission diversity function. The power control device comprises a base station device and mobile station device. The base station device transmits a traffic signal via at least two antennas, switch |
| 6850509 |
Scheduling apparatus and method for packet data service in a wireless communication system |
February 1, 2005 |
| Disclosed is a method for assigning packet data to be transmitted to a radio packet data channel of a base station system in response to a packet traffic transmission request for a plurality of mobile stations in a mobile communication system. The method comprises collecting the packet |
| 6845089 |
Method of continuously transmitting user data on a reverse common channel in a mobile communicat |
January 18, 2005 |
| A method is provided of continuously transmitting user data on a reverse common channel in a mobile communication system without a reverse dedicated channel. The user data is divided into a plurality of segmented messages if the user data is longer than a data segment in a frame of the |
| 6834047 |
Data communication apparatus and method in multi-carrier CDMA communication system |
December 21, 2004 |
| There is provided a data communication apparatus and method in a multi-carrier CDMA communication system. A transmitting device determines whether a supplemental channel is transmitted. If the supplemental channel is transmitted, the transmitting device assigns the supplemental channel |
| 6822998 |
Apparatus and method for measuring noise power in a CDMA mobile communication system |
November 23, 2004 |
| A noise power measuring system and method for a base station receiver are disclosed. In the system and method, a received signal is despread and the noise power of the despread received signal is estimated. An orthogonal code generator generates a noise power measurement orthogonal code, |
| 6810264 |
Power controlling apparatus and method in mobile communication system |
October 26, 2004 |
| A power controlling apparatus and method in a mobile communication system. A receiver in a mobile station multiplexes the frame reception result indicator bits for at least two traffic channels received from a transmitter in a base station, inserts the multiplexed frame reception res |
| 6810253 |
Power control apparatus and method in a wireless communication system using scheduled packet dat |
October 26, 2004 |
| Disclosed is a method for handing-off a mobile station receiving packet data over a second channel from a first base station system (BSS) to a second BSS by a base station controller (BSC) in a system in which the mobile station communicates with the first BSS and the second BSS adjacent |
| 6782271 |
Method and apparatus for link adaptation in a mobile communication system |
August 24, 2004 |
| Disclosed is a method for determining a forward data rate and a forward transmission power level in a mobile communication system. An access terminal measures a C/I of a forward pilot channel, determines a forward data rate by matching the measured C/I with a reference C/I, creates a |
| 6768728 |
Device and method for exchanging frame messages of different lengths in CDMA communication syste |
July 27, 2004 |
| In a transmission device and method for a CDMA communication system, when a shorter frame message is generated during transmission of a longer frame message, the transmission of the longer frame message is interrupted, whereupon the shorter frame message is immediately transmitted in pla |
| 6741578 |
Apparatus and method for synchronizing channels in a W-CDMA communication system |
May 25, 2004 |
| A synchronization (sync) code communication device for a CDMA communication system. A base station sync code transmission device comprises a primary sync code transmitter and a secondary sync code transmitter. The primary sync code transmitter is for generating and then transmitting a pr |
| 6724740 |
Channel communication device and method for CDMA communication system |
April 20, 2004 |
| A CDMA communication system transmitting/receiving control information during a voice and/or data communication service by using a dedicated control channel. A message frame length for the control information is variable according to an amount of the control information. The CDMA com |
| 6717916 |
Method and apparatus for initializing a packet traffic channel in a communication system |
April 6, 2004 |
| A method of initializing a packet traffic channel in a communication system to efficiently use channel capacity in a packet data service and to reduce time and power required to initialize a packet traffic channel includes timing alignment between a terminal and a base station, controlle |
| 6700881 |
Rate control device and method for CDMA communication system |
March 2, 2004 |
| A traffic channel transmission device for a CDMA communication system using a plurality of coding rates and orthogonal codes, determines a present channel condition and adaptively selects a coding rate and an orthogonal code according to the determination. In the device, a channel receiv |
| 6690665 |
Device and method for mobile station for receiving signals transmitted from a base station |
February 10, 2004 |
| A receiving device for a mobile station receives signals transmitted from a base station having a time-switched transmission diversity (TSTD) function. In the receiving device, a despreader despreads channel signals which have been transmitted in a TSTD mode of operation. A pilot separat |
| 6674739 |
Device and method for assigning spreading code for reverse common channel message in CDMA commun |
January 6, 2004 |
| There are provided a common channel message communicating device and method in a CDMA communication system. In a base station of the common channel message communicating device, a control message generator generates a control message including information representative of a spreading co |
| 6671266 |
Device and method for controlling powers of orthogonal channel and quasi-orthogonal channel in C |
December 30, 2003 |
| A power control device for a CDMA communication system using different kinds of spreading codes. In the power control device for a base station device, a first channel generator generates a first channel signal by spreading first input data with an orthogonal code and a second channel |
| 6667961 |
Device and method for implementing handoff in mobile communication system |
December 23, 2003 |
| A handoff implementing device and method in a mobile communication system. The handoff implementing device including a base station transmitter and a mobile station receiver. The base station transmitter divides a given frame period into a transmission period and a non-transmission perio |
| 6609003 |
Handoff method in a mobile communication system supporting transmission diversity |
August 19, 2003 |
| A method for performing a handoff when a mobile station receiving a transmission diversity signal travels from a first base station transmitting a signal in a transmission diversity mode of operation to a second base station transmitting a signal in the transmission diversity mode of |
| 6600934 |
Device and method for providing selection transmit diversity in mobile communication system |
July 29, 2003 |
| An STD (Selection Transmit Diversity) communication method. In the method, a base station selects a transmission antenna corresponding to an antenna selection signal received from a terminal, transmits a traffic channel signal through the selected antenna, and transmits a predetermined p |
| 6556554 |
Device and method for communicating power control signals in mobile communication system |
April 29, 2003 |
| A power control device for a mobile communication system includes a base station transmitter and a mobile station receiver, wherein the base station transmitter includes: a plurality of PCB pattern generators for multiplying PCBs for a plurality of mobile stations by user patterns as |
| 6539008 |
Method for inserting power control bits in the CDMA mobile system |
March 25, 2003 |
| A power control bit inserting method between a base station and a terminal. The base station and the terminal each use a plurality of adjacent frequency bands as signal paths with independent signal paths of a real part and an imaginary part given to each frequency. In the power control |
| 6529496 |
TSTD transmitter for limiting transmission power of antenna and controlling method thereof for b |
March 4, 2003 |
| A device and method are provided for limiting a power of a signal transmitted through any antenna to a maximum transmission power of the antenna in a TSTD (Time-Switched Transmission Diversity) transmitter of a base station of a mobile communication system. In a TSTD transmitter incl |
| 6519473 |
Forward link power control device and methods for a mobile communication system supporting trans |
February 11, 2003 |
| A forward link power control device for a mobile communication system supporting as transmission diversity function. The power control device comprises a base station device and mobile station device. The base station device transmits a traffic signal via at least two antennas, switc |
| 6510145 |
Method and apparatus for providing packet data service in a communication system |
January 21, 2003 |
| Method and apparatus for providing a packet data service between a terminal and a base station in a mobile communication system includes packet data being transmitted from the terminal (base station) on a reverse (forward) packet traffic channel to the base station (terminal) during a da |
