摘要:
A method for reducing power consumption of a terminal that communicates with a base station in a mobile communication system using a multi-carrier structure composed of a primary component carrier and at least one secondary component carrier comprises: receiving a discontinuous reception (DRX) parameter group for multi carriers from the base station; and setting the multi carriers to the same parameter value, by using the received parameter group. The method for reducing power consumption of the terminal further comprises: performing a downlink control channel receive operation on each carrier according to a DRX cycle. As the base station in the mobile communication system using the multi-carrier structure simplifies the DRX process for reducing power consumption of a terminal by reducing signaling load for the multi-carrier control of the terminal, it becomes possible to reduce power consumption of the terminal.
摘要:
Disclosed is a method and apparatus for RA in a cellular system. The RA in the cellular system includes receiving an RA preamble from a terminal for RA, transmitting, to the terminal, an RA response message including a sequence of the received RA preamble and uplink resource information of the terminal and overload state information with respect to the RA, receiving control information generated based on the RA response message from the terminal through the uplink resource information, and transmitting control response information with respect to the received control information.
摘要:
Disclosed is a method for allocating radio resources in a wireless communication system. Subframes that use only a particular terminal or a particular terminal group are allocated through the period, offset, and number of subframes that are consecutively used, or the subframes are allocated through the period, offset, and bitmap for subframes that are available within one or a plurality of frames, whereby radio resources are effectively allocated.
摘要:
An integrated circuit includes: an on-die-termination (ODT) circuit configured to drive an input signal with drivability adjusted according to an impedance calibration code and a reference voltage; and an input buffer configured to buffer the input signal in response to the reference voltage and generate an output signal.
摘要:
Provided is a technology that may decrease or eliminate communication overhead in a communication system including a relay. A base station included in the communication system may compress a protocol header to transmit data. The relay may receive the compressed protocol header and the data, and then decompress the compressed protocol header to transmit the decompressed protocol header to a terminal.
摘要:
A method for reducing power consumption of a terminal that communicates with a base station in a mobile communication system using a multi-carrier structure composed of a primary component carrier and at least one secondary component carrier comprises: receiving a discontinuous reception (DRX) parameter group for multi carriers from the base station; and setting the multi carriers to the same parameter value, by using the received parameter group. The method for reducing power consumption of the terminal further comprises: performing a downlink control channel receive operation on each carrier according to a DRX cycle. As the base station in the mobile communication system using the multi-carrier structure simplifies the DRX process for reducing power consumption of a terminal by reducing signaling load for the multi-carrier control of the terminal, it becomes possible to reduce power consumption of the terminal.
摘要:
Provided are a data transmission method in a communication system and a relay performing the same. The data transmission method in a communication system includes receiving, at a relay, an uplink buffer status report (BSR) of a terminal from the terminal, including the uplink BSR of the terminal received by the relay in an uplink BSR to be transmitted from the relay to a base station to generate a combined uplink BSR, and transmitting the combined uplink BSR to the base station even before the relay receives data stored in an uplink buffer of the terminal from the terminal. Accordingly, it is possible to reduce the transmission delay of the communication system including a relay.
摘要:
Disclosed is a method in which a terminal transmits retransmission request information for an error packet of a multimedia broadcast/multicast service (MBMS), and a base station retransmits a packet in the multimedia broadcast/multicast service. The method in which the terminal transmits retransmission request information for an error packet comprises: a step of receiving an MBMS packet from the base station; a step of checking whether or not an error exists in the received MBMS packet; and a step of transmitting retransmission request information for the error packet using at least one of PUSCH, PUCCH and a random access preamble for a random access process if an error exists in the received MBMS packet. The present invention achieves improved service satisfaction among terminals located on an intercell boundary, an MBSFN boundary, and regions with a poor wireless environment.
摘要:
Disclosed is a data transmission system that transmits data by using relay. The relay may select a transmission terminal from among a plurality of terminals accessing a base station. The base station may transmit base station data to the relay during a first time slot, the transmission terminal may transmit terminal data to the relay. The relay may transmit the terminal data to the base station and may transmit the base station data to the transmission terminal during a second time slot.
摘要:
Provided is a method of transmitting and receiving data using a persistent allocation scheme in order to effectively support a voice service between a base station and a mobile terminal in a packet based mobile communication system. When an error occurs in transmitting a control information that indicates whether to use a radio resource using the persistent allocation scheme, the base station may retransmit the control information and thereby maintain a communication quality.