摘要:
An apparatus and method for reducing the volume of a resource allocation information message in a broadband wireless communication system are provided, in which a scheduler determines whether to generate uplink control region allocation information, and a generator generates the uplink control region allocation information according to a result of the determination.
摘要:
An apparatus and method for transmitting feedback information are provided. In a method of operating a transmitter for transmitting feedback information in a broadband wireless access system, the method includes estimating a channel of a second path on the basis of information of a received downlink frame, obtaining a channel representative value corresponding to the estimated channel of the second path, modulating the channel representative value by spreading the channel representative value to a sounding symbol to be transmitted, and transmitting the modulated sounding symbol through a first path.
摘要:
An apparatus and method for allocating a channel and power by a Base Station (BS) in a communication system are provided. The method includes, performing one of a first scheduling, which uses inter-cell cooperation information received from at least one neighboring BS and a data rate received from each User Equipment (UE), and a second scheduling, which uses both an average data rate for each subchannel computed by accumulating the data rates for a preset time period and the inter-cell cooperation information, selecting a UE to be allocated each subchannel in each subframe based on results of the performed scheduling, computing a power metric for each of the selected UE and a non-selected UE by using the inter-cell cooperation information, the average data rate, an amount of performance change of the selected UE, and the results of the performed scheduling; and allocating power to all UEs including the selected UE and the non-selected UE by preset subframe periods by using the computed power metric.
摘要:
A method for controlling power in a communication system. The power control method in a base station includes receiving channel information from a plurality of mobile stations, and generating power control information of the mobile stations according to the received channel information; mapping the generated power control information to transmission fields of corresponding mobile stations according to allocation information of channels allocated to receive the channel information; and broadcasting to the mobile stations a message including the power control information mapped to the transmission fields of the corresponding mobile stations.
摘要:
A method for controlling power in a communication system. A base station allocates Channel Quality Information Channels (CQICHs) to at least one mobile station, transmits CQICH information for the allocated CQICHs, and transmits power control information to the mobile stations to which the CQICHs are allocated. A mobile station receives CQICH allocation information, receives power control information, and detects the power control information allocated to the mobile station by using the CQICH allocation information.
摘要:
An apparatus is provided for decoding a Low-Density Parity Check (LDPC) code in a communication system. In the LDPC decoding apparatus, an edge memory stores a message delivered through an edge between a variable node and a check node. A node memory stores a node value. A node processor performs a node processing operation using information stored in at least one of the node memory and the edge memory, stores a check node value generated by performing the node processing operation in the node memory, and stores a message generated by performing the node processing operation in the edge memory. A switch switches outputs of the node memory and the node processor through a permutation operation. A parity check verifier parity-checks an output from the node memory. A controller provides a control signal for controlling the node processor.
摘要:
In a communication system, information regarding a first modulation scheme applied to a frequency domain in a serving base station is received from the serving base station. A signal of the frequency domain is received. A second modulation scheme is set by estimating a modulation scheme applied to the frequency domain in at least one neighbor base station from the received signal. Channel state information is generated by estimating the received signal. An operation for selecting whether to use interference cancellation is performed using the channel state information, the first modulation scheme information and the second modulation scheme.
摘要:
A method and apparatus for allocating a feedback channel in a multiple antenna communication system are provided. In a method of operating a Base Station (BS) for allocating a feedback channel in a Multi-User Multiple-Input Multiple-Output (MU-MIMO) communication system, the method includes measuring a MIMO transmission environment, determining an amount of feedback according to the MIMO transmission environment, and allocating a feedback channel according to an amount of the feedback.
摘要:
A method and an apparatus maximize the capacity of a wireless communication network by taking into consideration inter-cell interference coordination. A home cell's capacity sensitivity to interference is calculated. At least one neighbor cell's capacity sensitivity to interference is collected. And at least one UE located in the home cell is scheduled based on the home cell's capacity sensitivity and the neighbor cell's capacity sensitivity. Accordingly, it is possible to achieve power and allocation control to maximize the capacity of the overall network including neighbor cells increase the system capacity in a cellular system in which inter-cell interference is large, and adaptively perform a UE scheduling in real time to changing distribution of UEs because information on a change in the capacity of each cell is shared by periods.
摘要:
A method for controlling power in a communication system. A base station allocates Channel Quality Information Channels to at least one mobile station, transmits the allocated Channel Quality Information Channel information, and transmits power control information to the mobile station to which the Channel Quality Information Channel is allocated. And a mobile station for receives Channel Quality Information Channel allocation information, receives power control information, and detects the power control information allocated to the mobile station by using the Channel Quality Information Channel allocation information.