摘要:
A cognitive radio communication apparatus and method to control a sensing operation. The cognitive radio communication apparatus includes an information receiver to receive channel state information associated with a channel occupancy state of a primary system from at least one sensing node of a secondary system; a sensing control unit to control a sensing period of the at least one sensing node according to a change pattern of the channel occupancy state, based on the channel state information; and a control information transmitter to transmit control information associated with the controlled sensing period to at least one member node of the secondary system.
摘要:
A cognitive radio communication apparatus and method to control a sensing operation. The cognitive radio communication apparatus includes an information receiver to receive channel state information associated with a channel occupancy state of a primary system from at least one sensing node of a secondary system; a sensing control unit to control a sensing period of the at least one sensing node according to a change pattern of the channel occupancy state, based on the channel state information; and a control information transmitter to transmit control information associated with the controlled sensing period to at least one member node of the secondary system.
摘要:
Provided is a hierarchical rate splitting method and apparatus in a hierarchical cell communication system. An upper node or a macro base station may adaptively determine a hierarchical splitting mode based on a channel condition of a channel between the macro base station and a macro terminal and/or a performance of pico terminals in comparison to a performance of the macro terminal.
摘要:
Provided is a hierarchical rate splitting method and apparatus in a hierarchical cell communication system. An upper node or a macro base station may adaptively determine a hierarchical splitting mode based on a channel condition of a channel between the macro base station and a macro terminal and/or a performance of pico terminals in comparison to a performance of the macro terminal.
摘要:
Provided are a system and method for providing a streaming-based portable application, which can add and update a portable application in one click, without separate procedures, by using advantages of application streaming while maintaining advantages of a portable application. In the system, a streaming server stores an application execution code provided at the inside of the system. A client provides a virtualization of an execution code necessary to execute an application process, streams an execution code from the streaming server through a network, and manages application streamed images.
摘要:
Disclosed herein are an apparatus and method for converting a replication-based file into a parity-based file in an asymmetric clustering file system. The apparatus includes a reception unit, a control unit, a parity computation unit, and a chunk conversion unit. The reception unit receives a parity-based conversion request, information about the size of a stripe, and a list of new chunks from a metadata server. The control unit divides a replication chunk, selected from among a plurality of replication chunks corresponding to an original chunk of the replication-based file, into a plurality of data segments. The parity computation unit generates at least one parity segment by performing a parity operation on the plurality of data segments. The chunk conversion unit selects one of different data segments from the original chunk or one of the plurality of replication chunks, the different data segments having locations different from one another.
摘要:
The present description relates to a method for transmitting data from a base station according to one embodiment of the present invention comprises: a step for transmitting to the relay node a signal having a first data to be delivered to a user equipment via the relay node; a step for transmitting to the user equipment a signal having a second data; and a step for receiving from the user equipment a HARQ confirmation response information regarding the first data delivered to the user equipment through the relay node, wherein the first data is retransmitted to the user equipment from the relay node when the HARQ confirmation response information is NACK, and scheduling information for transmitting the first data from the relay node to the user equipment and scheduling information for retransmitting the first data can be designated in advance by the base station.
摘要:
There are provided a method and apparatus for an effective multi-cell interference control service, to make it possible for users located at a cell boundary to dynamically select a suitable interference control technique by monitoring interference information collected by user terminals and network conditions of a serving base station and adjacent base stations to solve co-channel interference by adjacent cell users.
摘要:
Techniques are described that can be used to maximize the interference suppression capability of space-time coded systems by managing synchronous transmission signaling. To enhance the probability of the occurrence synchronous interference and accordingly increase interference cancellation capability at a receiver, a network of at least two transmitters in a network may utilize similar structured coding schemes and coordinate transmission so that the receiver receives co-channel signals synchronously.
摘要:
Disclosed herein are an apparatus and method for enabling clients to participate in data storage in a distributed file system. The client device of a distributed file system according to the present invention includes a storage determination unit and a file reading unit. The storage determination unit determines whether first metadata information, including a global generation number of the chunk corresponding to a file to be read, has already been stored in the local storage. The file reading unit performs a read operation on the file using local data corresponding to the first metadata information if, as a result of the determination, it is determined that the first metadata information has already been stored.