摘要:
A method and system for allocating resources to prevent inter-cell interference in a multi-cellular communication system, in which an interference period is detected by comparing a data transmission period in a first cell with a data transmission period in a second cell, the interference period is divided into a plurality of unit periods, each of the first cell and the second cell is divided into a plurality of unit areas corresponding to the unit periods, and resources of the unit periods corresponding to the unit areas are allocated to the unit areas.
摘要:
A system and method for transmitting resource allocation information in a wireless communication system is provided. A transmitter transmits resource allocation information mapped to a current time interval in a first region to a receiver, and transmits resource allocation information mapped to a next time interval in a second region. When receiving the resource allocation information of the second region, the receiver notifies the transmitter whether the resource allocation information has been received. The transmitter receives notification that the resource allocation information of the second region has been received and transmits resource allocation information mapped to a subsequent time interval in the second region.
摘要:
An apparatus and method for Proportional Fair (PF) scheduling for multicast services in a communication system are provided. In the PF scheduling method, a multicast PF metric is calculated over every AMC level provided by the system using the channel status information and average data rates of MSs, and an AMC level maximizing the multicast PF metric is selected as a multicast service rate.
摘要:
An apparatus and method for re-transmitting data in a wireless access communication system are disclosed. The data retransmission method in a wireless access communication system performing a data transmission/reception operation between a terminal and a base station using ARQ (Automatic Repeat Request) includes the step of transmitting allocation information for bandwidth for data retransmission with respect to data received by the base station and ARQ feedback information according to an error which is included in the received data from the base station to the terminal, and re-transmitting the data in which the error had occurred through the allocated bandwidth based on the allocation information of the bandwidth for the data retransmission from the terminal to the base station.
摘要:
A cell configuration method and system and a channel allocation method for the system are disclosed for minimizing the influence of intercell interference between cells in a mobile communication system capable of providing a mobile subscriber with a stable communication service, by determining a number of safety channels to be assigned to each of the plurality of cells, and providing the adjacent cells around the serving cell with at least one additional shared safety channel other than the safety channel originally assigned to the each cell.
摘要:
A spatial modulation method and transmitting and receiving apparatuses using the spatial modulation method in a MIMO system are provided. The spatial modulation method uses an index of an activated antenna and a signal modulation constellation as an information source. The spatial modulation method is applied to the transmitting apparatus. The receiving apparatus uses a spatial modulation detection method in which a channel path gain is repeatedly multiplied to detect the spatially modulated signal efficiently.
摘要:
A transport control method in a transmitter of a wireless communication system, which includes a transport layer having a congestion control function of transmitting data in a segment basis and retransmitting a segment if an RTO timer expires before receipt of an ACK segment is received in response to transmission of the segment and a MAC layer for detecting receipt of an ACK segment through a wireless link and transporting the detected ACK segment to the transport layer, includes temporarily storing received ACK segments in the MAC layer; detecting an average transmission rate of data segments; and transporting the stored ACK segments to the transport layer at the average transmission rate. Accordingly, by controlling an upward transport rate of a received ACK message by referring to an RTO value of a TCP in a MAC layer, unnecessary retransmission can be prevented by a congestion control function.
摘要:
A system and method for transmitting resource allocation information in a wireless communication system is provided. A transmitter transmits resource allocation information mapped to a current time interval in a first region to a receiver, and transmits resource allocation information mapped to a next time interval in a second region. When receiving the resource allocation information of the second region, the receiver notifies the transmitter whether the resource allocation information has been received. The transmitter receives notification that the resource allocation information of the second region has been received and transmits resource allocation information mapped to a subsequent time interval in the second region.
摘要:
A signal transmission/transmission apparatus and method in a communication system are provided, in which a BS groups MSs serviced by the BS into MS groups and allocates a DL dedicated channel and a UL dedicated channel to each of the MS groups.
摘要:
Disclosed is a method for transmitting and receiving MAC PDUs in a broadband wireless communication system. A transmitter generates a MAC PDU and determines if an empty area exists in the PDU. If the empty area exists, the transmitter determines if there exists a complete SDU for transmission having a size that is less than or equal to the size of the empty area. If the complete SDU exists, the transmitter adds into the PDU as a last payload piece the SDU without a subheader, and sets a GMH of the PDU to indicate that a No Overhead Last complete SDU (NOLS) exists, and transmits the PDU. A receiver analyzes a GMH of a received MAC PDU and determines if an NOLS exists in the PDU. If the NOLS exists, the receiver sequentially monitors the PSHs in the PDU to detect the last PSH, and separates an SDU corresponding to the NOLS from the PDU with reference to the last PSH.