摘要:
A common operating set including a plurality of cells may be set, and common radio resources may be allocated to enable the plurality of cells to perform a multi-cell common operation. Unique uplink radio resources may be allocated to each of terminals in the common operating set within the common radio resources, and each of the terminals may transmit corresponding uplink feedback information to a plurality of base stations based on corresponding unique uplink radio resources. Accordingly, each of the base stations may recognize information associated with a wireless environment between each of terminals and a corresponding base station.
摘要:
Provided is a cooperative communication technology of a target terminal and a cooperative terminal. In an environment in which interference exists between cells, cooperation between terminals may be performed in order to improve quality of signals that are received from a base station.
摘要:
A communication method of a macro base station serving a target mobile terminal in a macrocell including a picocell includes receiving information about an uplink interference of a pico base station in the picocell from the pico base station, and determining whether to perform a handover of the target mobile terminal to the pico base station based on an uplink interference of the macro base station and an uplink interference of the pico base station.
摘要:
A method and apparatus of a base station (BS) perform uplink (UL) random access in a wireless communication system. Random access channel information is determined on each of a plurality of frames constituting a superframe, and a control message comprising the random access channel information is broadcasted. A method and apparatus of a mobile station (MS) perform UL random access in a wireless communication system. A control message comprising random access channel information is received. A frame for minimizing a collision during a contention-based random access is selected based on the random access channel information. For data to be transmitted using the selected frame, it is determined whether the information to be transmitted is an access class with equal or higher priority to a received access class comprised in the random access channel information. A contention-based random access bandwidth request is transmitted to the BS for the data to be transmitted.
摘要:
A common operating set including a plurality of cells may be set, and common radio resources may be allocated to enable the plurality of cells to perform a multi-cell common operation. Unique uplink radio resources may be allocated to each of terminals in the common operating set within the common radio resources, and each of the terminals may transmit corresponding uplink feedback information to a plurality of base stations based on corresponding unique uplink radio resources. Accordingly, each of the base stations may recognize information associated with a wireless environment between each of terminals and a corresponding base station.
摘要:
Disclosed is a new type of air cleaner adapted to primarily filter out various types of alien substances (e.g. dust) through a filter assembly, as well as automatically remove the alien substances that have been filtered out, and a method for controlling the operation of the air cleaner. The air cleaner includes a rotation brush unit installed on the inner wall surface of the front panel to face the front surface of the mesh-type filter body and adapted to rotate while maintaining contact with the front surface of the mesh-type filter body. When the air-drawing unit stops operation, the rotation brush unit is operated to remove dust accumulated on the surface of the mesh-type filter body of the filter assembly, which is installed near the air inlet.
摘要:
A communication method of a macro base station serving a target mobile terminal in a macrocell including a picocell includes receiving information about an uplink interference of a pico base station in the picocell from the pico base station, and determining whether to perform a handover of the target mobile terminal to the pico base station based on an uplink interference of the macro base station and an uplink interference of the pico base station.
摘要:
A communication system with an improved network access structure for inter-cell cooperation is provided. The communication system includes a central unit and at least one radio access unit. The at least one radio access unit may form at least one virtual cell by merging or separating cells of radio access units according to a distribution of terminals, statuses of channels, an amount of traffic, and the like.
摘要:
Provided is a communication method of a neighboring terminal and a target terminal in which a cooperative terminal that has a better SINR or a better channel condition provides help to a target terminal through cooperation between terminals based on a random access mode or a scheduling mode, so that an SINR of the target terminal is improved without help from a base station.