摘要:
A Channel Quality Indicator (CQI) channel management in a broadband wireless communication system is provided. Operations of a base station include determining a CQI channel operation mode for a CQI channel of a terminal which enters a sleep mode; transmitting at least one message which instructs to enter the sleep mode and includes information indicating the CQI channel operation mode; and managing the CQI channel of the terminal according to the CQI channel operation mode while the terminal operates in the sleep mode. Candidates of the CQI channel operation mode include at least one of a first mode which deallocates the CQI channel in the sleep mode entry, a second mode which maintains the CQI channel in the sleep mode and forbids CQI channel allocation to other terminal during a sleep window, a third mode which deallocates the CQI channel in the sleep window entry without signaling, and a fourth mode which maintains the CQI channel in the sleep mode and allows the CQI channel allocation to other terminal during the sleep window.
摘要:
A Channel Quality Indicator (CQI) channel management in a broadband wireless communication system is provided. Operations of a base station include determining a CQI channel operation mode for a CQI channel of a terminal which enters a sleep mode; transmitting at least one message which instructs to enter the sleep mode and includes information indicating the CQI channel operation mode; and managing the CQI channel of the terminal according to the CQI channel operation mode while the terminal operates in the sleep mode. Candidates of the CQI channel operation mode include at least one of a first mode which deallocates the CQI channel in the sleep mode entry, a second mode which maintains the CQI channel in the sleep mode and forbids CQI channel allocation to other terminal during a sleep window, a third mode which deallocates the CQI channel in the sleep window entry without signaling, and a fourth mode which maintains the CQI channel in the sleep mode and allows the CQI channel allocation to other terminal during the sleep window.
摘要:
A signal transmission/reception apparatus of a communication system. The signal transmission apparatus receives an information vector, encodes the information vector into a structured Low Density Parity Check (LDPC) codeword using a structured LDPC coding scheme, and transmits the generated structured LDPC code to the signal reception apparatus. Then the signal reception apparatus receives a signal, and detects an information vector by decoding the received signal using a decoding scheme corresponding to the structured LDPC coding scheme used in the signal transmission apparatus.
摘要:
An apparatus and method for transparently relaying a signal using a plurality of frequency bands in a multi-hop relay cellular network are provided, in which a Relay Station (RS) communicates with a Base Station (BS) via a relay link in a first frequency band and communicates with a Mobile Station (MS) within the sub-cell of the RS via a sub-cell link in a second frequency band different from the first frequency band.
摘要:
An apparatus and a method for beam selection and inter-beam scheduling using beam scanning in a beamformed wireless communication system are provided. A method for transmitting a signal in a transmitting stage includes transmitting a reference signal through at least one transmission beam, receiving channel information of at least one transmission beam from a receiving stage, selecting a first transmission beam for sending a signal to the receiving stage, by considering the channel information of the at least one transmission beam provided from the receiving stage, and performing inter-beam scheduling for the receiving stage by considering ID information of the first transmission beam.
摘要:
An apparatus and method for supporting diversity in a beamformed wireless communication system. A method for transmitting a signal in a transmit end includes determining Receive (Rx) beamforming capability information of a receive end, receiving channel information on at least one Transmit (Tx) beam pattern from the receive end, determining at least one Tx beam pattern for transmitting a signal to the receive end, in consideration of Rx beamforming support information of the receive end and the channel information on the at least one Tx beam pattern, and transmitting a signal to the receive end using the at least one Tx beam pattern for transmitting the signal to the receive end.
摘要:
An apparatus and method for controlling uplink transmission power in a communication system are provided. In the method, transmission power of an uplink data channel signal is determined according to an Open Loop Power Control (OLPC) scheme and transmission power of an uplink control channel signal is determined according to a Closed Loop Power Control (CLPC) scheme.
摘要:
An apparatus and a method for composing a subchannel in a wireless communication system are provided. The method includes performing a subband-based permutation on resources for composing a subchannel; selecting one or more subbands as resources for a band selection subchannel from the resources passing through the subband-based permutation; composing the band selection subchannel using at least one of the selected subbands; performing a resource allocation unit based permutation on resources not selected for the band selection subchannel; composing a resource allocation unit based diversity subchannel using subband remained in the selected subbands after the band selection subchannel is composed and at least one of the resource allocation units of the resources passing through the resource allocation unit based permutation; and composing a tone-based diversity subchannel by performing a tone-based permutation on resources remained after the resource allocation unit based diversity subchannel is composed.
摘要:
A method and a Base Station (BS) of transmitting information for Random Access (RA) by a base station in a wireless communication system are provided. The BS generates RA information for beam alignment between the base station and each of a plurality of mobile terminals based on a number of reception beam forming patterns of the base station used for each of one or more RA channels and broadcasts the RA information to the plurality of mobile terminals. The RA information comprises information related to the number of reception beam forming patterns of the base station used for each of the one or more RA channels.
摘要:
A method and an apparatus for tracking a beam in a wireless communication system are provided. In the method, a plurality of downlink reference signals are received from a base station and at least one downlink transmission beam pattern is determined. A plurality of uplink reference signals are transmitted to the base station, each includes identifier information corresponding to the determined at least one downlink transmission beam pattern. ACKnowledgement (ACK) information indicating that the base station has successfully received an identifier included in the identifier information corresponding to the determined at least one downlink transmission beam pattern from identifier information corresponding to an uplink transmission beam pattern and that the plurality of uplink reference signals from the base station is received.