Abstract:
본 발명은 셀의 경계 영역에 설치되는 셀간 간섭 조정장치 및 셀의 경계 영역에 위치하는 이동단말에 대한 셀간 간섭 조정방법에 관한 것으로, 셀간 간섭의 주요 원인이 되는 셀의 경계 영역에 셀간 간섭 조정장치를 설치하고, 기지국이 이 셀간 간섭 조정장치의 사용 주파수 및 전송 출력을 사전에 설정된 링크(Link)를 통해 전달함으로써 셀간 간섭 조정장치가 복잡한 알고리즘을 사용하지 않고도 간단하게 셀간 간섭을 조정할 수 있도록 하여 통신 성능을 향상시킬 수 있도록 한 것이다. 이동단말, 기지국, 셀, 경계 영역, 셀간 간섭 조정
Abstract:
PURPOSE: A subframe scheduling method and system thereof in a mobile communication relay system are provided to enable a base station to change the location of a sub frame based on period information. CONSTITUTION: A base station(110) sets up sub-frame information. A relay(120) relays information transmission between the base station and a terminal. The relay executes a service based on the sub-frame information. The relay transmits period information of the service to the base station. The base station varies the sub-frame information based on period information. The base station transmits the changed sub-frame information to the relay.
Abstract:
PURPOSE: A scheduling method in a base station considering a down link control channel resource and a device thereof are provided to prevent overlap of a CCE(Control Channel Element) of a specific search space in a user terminal. CONSTITUTION: An aggregation level determining unit(11) determines an aggregation level of a common search space by considering channel quality about a plurality of user terminals. A message selecting unit(15) recognizes the number of messages necessary a common search space assignment and the number of candidates of a down link control channel according to the aggregation level. The message selecting unit selects a part of the messages according to the number of the candidates of the down link control channel.
Abstract:
PURPOSE: An aggregation level management device for control channel at a base station, a decoding device for control channel at a mobile terminal and a decoding method for control channel over a mobile communication system are provided to decode only control information relevant to aggregation level received among control information candidate through downlink control channel in the mobile terminal, thereby preventing unnecessary PDCCH(Physical Downlink Control Channel) decoding attempt. CONSTITUTION: A BS(Base Station) determines aggregation level of PDCCH(Physical Downlink Control Channel)(S310). The BS transmits the determined aggregation level to a mobile terminal(S320). If the determined aggregation level is received to the mobile terminal, the mobile terminal decodes only control information relevant to a received aggregation level among control information candidates(S330). The control information candidate is received through the PDCCH.
Abstract:
PURPOSE: A method for allocating a physical uplink shared channel on a VoIP service is provided to prevent the waste of resource caused by unnecessary resource allocation by judging the resource allocation. CONSTITUTION: A base station receives from an MS(Mobile Station) a resource allocation request for uplink data transmission(S520), and recognizes an LCG(Logical Channel Group) identifier of a buffer state report within the resource allocation request(S530). If VoIP(Voice over Internet Protocol) uplink scheduling request buffer size is equal to or larger than the amount of transmission data of preset VoIP service, the base station allocates a PUSCH(Physical Uplink Shared Channel) to the terminal(S540,S550).
Abstract:
본 발명은 멀티캐스트 구성원 노드의 네트워크 코딩 시스템에 관한 것으로, 다수의 멀티캐스트 경로들이 중첩되는 위치에 존재하는지 판단하여 중첩되는 위치에 있을 경우, 각 멀티캐스트 경로로 분산되어 전송되는 데이터들을 네트워크 코딩(Network Coding)하여 출력함으로써 데이터의 전송량 및 전송 횟수를 줄여 데이터 전송 속도를 향상시킬 수 있도록 한 것이다. 멀티캐스트, 멀티캐스트 경로, 분산, 네트워크 코딩, 애드 혹(Ad-hoc)
Abstract:
A network coding system of a multicast member node is provided to increase the data transmission rate by synthesizing and outputting the data transmitted after being scattered through multicast paths. An overlapping existence decider(110) checks whether or not plural multicast paths are placed at an overlapped position. If so, a network coding unit(120) codes the data transmitted after being scattered through each multicast path, and outputs the network coded data. A tree information receiver(130) receives multicast tree information from each multicast path.