Abstract:
마스터 기지국은 단말에 설정된 적어도 하나의 슬레이브 기지국의 서빙셀들 중 상태를 변경할 타겟 서빙셀을 선택하고, 타겟 서빙셀의 상태 변경을 지시하는 MAC 제어 요소를 생성한 후 타겟 서빙셀을 관리하는 타겟 슬레이브 기지국과 단말간 상향링크 비동기 상태인 경우 MAC 제어 요소를 단말로 직접 전송한다.
Abstract:
The present invention relates to a method in which a primary component carrier (PCC) for user equipment (UE) in a multiple component carrier system is selected by an eNB. The method comprises the following steps: obtaining mobility condition information about the UE and coverage information and load information about carriers managed by the eNB; determining whether a mobility condition value of the UE is greater than a specific threshold, based on the obtained mobility condition information; and selecting the PCC based on the load information if, as a result of the determination, the mobility condition value is greater than the specific threshold. According to the present invention, a base station adaptively selects a PCC by taking the load state of a carrier (or cell), UE velocity, and the coverage of the carrier (or cell) into consideration. Accordingly, load balancing can be achieved, and a load due to the unnecessary handover and handover signaling of UE can be reduced. Moreover, all secondary component carriers (SSC) can be prevented from being configured (or reconfigured) after all the SSCs are released due to the frequent change of a PCC.
Abstract:
본 발명은 기지국에서 확장 케리어를 관리하는 장치 및 방법에 관한 것으로, 확장 케리어를 관리하는 장치는 단말에 확장 케리어의 추가가 필요한 경우, 사용할 수 있는 확장 케리어의 전파 특성과 단말이 사용 중인 단독 케리어의 전파 특성을 비교하여 단독 케리어 보다 송신 범위(transmission range)가 작거나 같고, 투과손실(penetration loss)이 높거나 같은 확장 케리어를 설정함으로 해서 커버리지 홀이 발생하지 않은 확장 케리어를 설정한다.
Abstract:
The present invention relates to a method and an apparatus for multiplexing and demultiplexing data in a mobile communications system, which can omit a rearrangement process of an order of the received data in the mobile communications system for transmitting and receiving a plurality of data simultaneously, and which can reduce a data buffering time.
Abstract:
PURPOSE: A mobility management method using CoMP(Coordinated Multiple Point) communication is provided to offer a handover technology applied to the CoMP communication. CONSTITUTION: A source base station establishes communication with UE(User Equipment)(S212). The source base station transmits a CoMP additional request in a neighbor base station(S213). The source and neighbor base stations establish the UE and CoMP communication according to the CoMP additional request(S214). The source base station transmits an anchor cell conversion request to the base station. The neighbor base station is operated as the anchor cell of the CoMP communication according to the anchor cell conversion request. [Reference numerals] (AA) Source base station; (BB) Neighbor base station; (S211) Measurement; (S212) Measurement report; (S213) CoMP additional request; (S214) CoMP cell addition; (S215) CoMP addition response; (S216) RRC connection reconfiguration; (S217) RRC connection reconfiguration completion; (S218) Path additional request; (S219) Path additional response
Abstract:
본 발명은 기지국의 제어채널 관리장치와, 사용자 단말의 제어채널 검색장치 및 이동통신 시스템의 제어채널 할당방법에 관한 것으로, 집합등급(Aggregation Level)이 높아 탐색구간 시작주소가 동일한 다수의 사용자 단말들이 해당 서브 프레임(Subframe)에 스케쥴링(Scheduling) 되어야 할 때, 우선 순위가 낮아 제어정보를 전송하지 못하는 충돌 사용자 단말의 제어정보를 제어채널 자원에 할당되는 충돌단말영역을 통해 전달함으로써 제어정보를 전달할 수 있는 사용자 단말의 수를 증가시킬 수 있어 망 전체의 성능을 향상시킬 수 있도록 한 것이다. 제어채널, 집합등급, 충돌 사용자 단말, 충돌단말영역
Abstract:
PURPOSE: A MBMS(Multimedia Broadcast/Multicast Service) system and a data-transmit-receiving method are provided to confirm the scheduling information and to selectively receive the subframe of multimedia data. CONSTITUTION: An information generator(120) creates the scheduling information for a plurality of subframes corresponding to each of a plurality of scheduling intervals. A transmit unit(130) in advance transmits the scheduling information corresponding to the first scheduling interval among a plurality of scheduling intervals to a terminal. The transmit unit makes the mapping the radio resource assignment information for each of a plurality of subframes, a plurality of subframes corresponding to the first scheduling inverval. The transmit unit transmits the mapped information to the terminal.
Abstract:
PURPOSE: An LTE communication device with a combination function of the improved PDU is provided to reduce the number of PDCP(Packet Data Convergence) PDU(Packet Data Unit)s. CONSTITUTION: A PDCP layer unit(240) generates at least one PDCP PDU after concatenating a plurality of PDCP PDUs. The PDCP layer unit generates at least one PDCP PDU based on a state of a radio link. An RLC(Radio Link Control) layer unit(230) segments at least one PDCP PDU received from the PDCP layer. The PDCP layer unit receives information about the state of a radio link from the RLC layer unit.