Abstract:
PURPOSE: A resource allocating device for the interference evasion of a wireless communication system and a method thereof are provided to prevent receiving failure caused by interference generated by incomplete synchronization with neighbor nodes in a wireless mesh network. CONSTITUTION: An allocation control unit (230) selects a simultaneous receiving impossibility node and a simultaneous transmission impossibility node about each hop node of a node by using a signal quality value of each hop node. The allocation control unit excludes a transmission-expected resource of the simultaneous transmission impossibility node from a transmission resource during the transmission resource allocation of the node. The allocation control unit excludes the transmission-expected resource of the simultaneous transmission impossibility node from a receiving resource of the node during the receiving resource allocation of the node. [Reference numerals] (210) Transmitting unit; (220) Receiving unit; (230) Allocation control unit
Abstract:
PURPOSE: A network management method and a device thereof are provided to support a restoration for a connection using a link by rapidly connecting the link to a neighbor mesh node. CONSTITUTION: When an entry node entering into a transmission range is sensed, a neighbor node management unit(1100) selects the entry node and a mesh node as an agent node including a neighbor node from a plurality of neighbor nodes. The neighbor node management unit forms a link with the entry node through the agent node. A transmission and reception unit(1300) receives a message from the plurality of the neighbor nodes. The transmission and reception unit transmits the received message to the neighbor node management unit. [Reference numerals] (1100) Neighbor node management unit; (1200) Path management unit; (1300) Transmission and reception unit
Abstract:
PURPOSE: A resource allocation method in a wireless communication system is provided to reduce interference between users by allocating a slot having the highest performance index among unoccupied slots in an OFDMA(Orthogonal Frequency Division Multiple Access) type ad-hoc system to a terminal. CONSTITUTION: A resource allocating device senses a subcarrier already being used by the other terminal among all of subcarriers(S410). The resource allocating device obtains a time error, a frequency error, and receiving power information of the occupied subcarrier(S420). The resource allocating device calculates an SINR(Signal-to-Interference plus Noise Ratio) of unoccupied subcarriers(S430). The resource allocating device allocates a subcarrier having the highest SINR among the unoccupied subcarriers to a terminal(S440). [Reference numerals] (S410) Sensing a subcarrier being used; (S420) Acquiring a time error, a frequency error, and receiving power information of the occupied subcarrier; (S430) Calculating SINR of unoccupied subcarriers; (S440) Selecting and allocating a subcarrier with the maximum SINR
Abstract:
PURPOSE: Access controlling method and device in a wireless communication system are provided to improve the reliability and the safety of network by avoiding the collision of neighing nodes in orthogonal frequency division multiple access(OFDMA)-based wireless mesh network. CONSTITUTION: Information with respect to following transmission timings of a 1-hop node and a 2-hop node is received through the 1-hop node(S501). The information calculates the following transmission time interval of the 1-hop node and the 2-hop node(S502). Based on the following transmission time interval, a sub-frame and a sub-channel corresponding to the following transmission timings are determined(S503 to S509). Information with respect to the following transmission timing with information with respect to the transmission timing of the 1-hop node is transmitted to the 1-hop node.
Abstract:
이동국은 피드백 자원 할당 정보를 수신하고, 하향링크 신호를 하향링크 전용 캐리어에서 수신한다. 이동국은 하향링크 전용 캐리어의 피드백을 위한 상향링크 가능 캐리어의 자원 영역 내에서 하향링크 전용 캐리어를 위한 피드백 자원 영역을 확인한다. 이동국은 하향링크 전용 캐리어를 위한 피드백 자원 영역 내에서 피드백 자원 할당 정보에 해당하는 피드백 채널 자원 영역을 확인한다. 이동국은 하향링크 신호에 대한 피드백을 상향링크 가능 캐리어에서 피드백 채널 자원 영역을 통해 전송한다.
Abstract:
MIMO 시스템에서단말및 그동작방법이개시된다. 단말은기지국으로부터채널상태측정을위한기준신호를이용하여, 기지국으로부터송신되는신호와잡음의비인제1 값을계산하고, 기지국으로부터의간섭과잡음의비인제2 값을계산할수 있다. 그리고, 단말은제2 값과제1 값의비(ratio)를소정의임계치와비교하여비트정보를생성하고, 제1 값및 상기비트정보를기지국으로피드백할수 있다.