Abstract:
PURPOSE: A band request information transmission method and a mobile terminal using the same, a dynamic slot assignment method and a base station of a mobile communication system using the same are provided to insert 2-bit state information into data packets according to buffer changes of a mobile terminal, to transmit the information, and to transmit the number of exact requested slots by using another control packets, thereby enabling a scheduler of a base station to efficiently perform dynamic slot assignment. CONSTITUTION: An optional mobile terminal calculates the number of uplink data slots(110). Control packets are transmitted to a base station(120). The base station assigns uplink data slots of a next frame(130). Determined assignment information is transmitted to many mobile terminals through downlink control slots(140). The mobile terminal determines a band request information value(150). The mobile terminal transmits packets located in a buffer by using the assigned data slots(160). The base station predicts the number of data slots of the next frame requested by the mobile terminal(170). The base station assigns the next frame(180). The base station transmits determined assignment information to the mobile terminals through the downlink control slots(190).
Abstract:
PURPOSE: An Ethernet apparatus having a multi lane and a managing method using the same are provided to reduce power consumption by selectively and efficiently using multiple lanes comprising a broadband Ethernet apparatus according to a purpose. CONSTITUTION: A transmission rate controller(111) comprises a control unit(220), a sensor unit(210), and a transmission unit(230). The sensor unit transmits a detected signal to the control unit by detecting an activated lane and a deactivated lane. The control unit determines whether or not to insert a null word by receiving a sensing signal from the sensor unit. The control unit inserts the null word into a word by controlling the transmission unit. The control unit determines a position and the number for null word insertion corresponding to the number and position of a deactivated lane among the multiple lanes. The transmission unit receives the number of the activated lane from the control unit. [Reference numerals] (210) Sensor unit; (220) Control unit; (230) Transmission unit; (AA) Sensing signal; (BB) Word+null word; (CC) Word
Abstract:
PURPOSE: An Ethernet apparatus for selectively operating lanes and a method thereof are provided to transceiver data lower than maximum transmission rate without losing Ethernet frame including effective traffic. CONSTITUTION: A transmission rate controller(512) establishes a plurality of PCS(Physical Coding Sublayer) lanes of the Ethernet apparatus inside as the state of physical lane among physical transmission lanes using the state change information which notifies the activation state of the plural physical transmission lanes. The transmission rate controller eliminates idle blocks. A block distributor(514) distributes the data block in which the idle blocks are removed from the activated PCS lane.
Abstract:
PURPOSE: An ethernet switching device and a method for reducing power consumption thereof are provided to reduce energy consumption without making complexity by minimizing packet transmission delay. CONSTITUTION: A plurality of connection ports is connected to each Ethernet device(20). A control part(100) includes a control frame generator(104) producing a data transmission control frame. The control frame generator transmits the data transmission control frame to the Ethernet device by producing the data transmission control frame about a connection port according to a state of packet data.