摘要:
Provided is an apparatus and method for band allocation scheduling in a multi-band communication system. In the method, transmission (TX) signals are classified into at least one of a control signal, a broadcast signal and a signal requiring a short latency, and other user signal by considering the types of the TX signals. A band of a frequency lower than a reference frequency among the multiple bands is allocated to a signal classified as at least one of the control signal, the broadcast signal and the signal requiring a short latency. A band of a frequency higher than the reference frequency is allocated to a signal classified as the other user signal.
摘要:
A method and system for using frequency resources in a communication system are provided. In the method and system, a total frequency band is divided into at least two frequency subbands and there is a guard interval between frequency subbands. A first frequency subband includes a TDD UL frequency subband and a TDD DL frequency subband. A second frequency subband includes an FDD UL frequency subband. A BS sets a frequency band between the TDD UL frequency subband and an FDD UL frequency subband as an additional UL frequency subband, and receives a signal from an MS in the additional UL frequency subband.
摘要:
An apparatus and method for downlink scheduling in a multi antenna wireless communication system are provided. The apparatus includes a receiver for receiving channel information of at least one mobile station that is selected as an active user by a base station, a judgment unit for judging whether it feeds back its own channel information using the channel information of the selected at least one mobile station, and a transmitter for transmitting the its own channel information to the base station according to judgment of the judgment unit.
摘要:
A system and a method minimize power consumption, signalling overhead, and processing load in blind scheduling in a mobile communication system. A User Equipment (UE) detects a type of an uplink (UL) grant while it is periodically allocated the UL grant. If there is no data to transmit using the UL grant, the UE determines whether to transmit a padding Medium Access Control (MAC) Protocol Data Unit (PDU) to an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (eNB) using the UL grant according to the type of the UL grant.
摘要:
A method and apparatus for multi-cell cooperative transmission are provided, for increasing the capacity of an MS at a cell edge through cooperation among a plurality of adjacent cells or BSs each having a plurality of antennas. The present invention improves Coordinated Multi Point (CoMP) performance due to simple CoMP implementation and reduced backhaul overhead and delay, and enables simple implementation of a CoMP resource allocation process and reduces handover overhead by eliminating handover between CoMP processing units.
摘要:
A handover apparatus and method in a communication system having a macro BS and a plurality of micro BSs in one cell are provided. A handover apparatus includes a macro BS for generating a plurality of messages, each messages respectively corresponds to one of a plurality of group areas defined by grouping service areas of the micro BSs and includes information about BSs to which MSs of the group area can perform handover. The macro BS also generates group area information indicating locations of the group areas, broadcasts the plurality of messages and the group area information to the cell, and manages handover of MSs based on the plurality of messages and the group area information.
摘要:
A system and method for transmitting resource allocation information by a base station in a communication system is provided. The method includes generating first MAP messages for user terminals, each of which includes an identifier of a corresponding user terminal and corresponds to resource allocation information on a first band, in an order of user terminals, generating a second MAP message, which corresponds to resource allocation information for a user terminal allocated resources of only a second band, and generating third MAP messages, which correspond to resource allocation information on the second band, for user terminals allocated resources of both the first band and the second band, among the user terminals, in the order of user terminals allocated resources of both the first band and the second band, transmitting the first MAP message through the first band, and transmitting the second and third MAP messages through the second band.
摘要:
An apparatus and method for beamforming in a multi-antenna system are provided. The method includes assuming at least one codeword comprised in a codebook as a precoding weight of a reference receive end and generating post-processing weights of at least two receive ends, confirming a codeword maximizing a sum rate using the post-processing weights, generating preceding weights of the receive ends using the codeword maximizing the sum rate, and precoding a transmit signal using the generated precoding weights and transmitting the precoded transmit signal to each receive end.
摘要:
An apparatus and a method for transiting an operation mode of a femto base station in a wireless communication system are provided. The method includes, in a sleep mode, confirming whether operation transition request information is received from at least one terminal; and when receiving the operation transition request information from the terminal, entering an active mode. Thus, the power consumption of the femto base station can be reduced and the interference caused by the operation of the femto base station can be mitigated.
摘要:
According to one embodiment, a method of a base station configured to select a precoding mode in a mobile communication system. When channel estimate information is received from at least one terminal, the channel estimate information is collected, so that user grouping is performed according to one precoding scheme from among multiple precoding schemes. Individual user scheduling is performed according to each precoding scheme, so that a service candidate group set is generated. The selected precoding scheme is maximized according to a transmission capacity of a service candidate group set for each precoding scheme. Data is then transmitted to a determined candidate group set using the determined precoding scheme.