摘要:
본 발명은 단일 셀(Single Cell) 상향 링크(Uplink) 비직교 다중 접속 시스템(Non-Orthogonal Multiple Access; NOMA)에서 전력 백오프 기법을 사용하여 적법 사용자의 데이터 전송률을 보장하면서 보안 데이터 전송률을 최대화하는 방법 및 시스템에 관한 것으로, 비직교 다중 접속(Non-Orthogonal Multiple Access; NOMA) 시스템에 페어링된 적법 사용자들 각각의 채널 크기에 따라 보안 사용자 또는 정보 사용자를 분류하는 단계, 전력 백오프(Power Back-off) 기법을 사용하여 상기 보안 사용자 또는 상기 정보 사용자에게 할당된 전력에 의한 수신 신호를 수신하는 단계 및 순차적 간섭 제거 방식을 통해 상기 수신 신호를 복호화하여 상기 적법 사용자들 중 채널 크기가 상대적으로 강한 상기 정보 사용자의 데이터 전송률을 보장하며, 채널 크기가 상대적으로 약한 상기 보안 사용자의 보안 데이터 전송률을 최대화하는 단계를 포함한다.
摘要:
PROBLEM TO BE SOLVED: To enable accurate link quality estimation of a wireless link between a sending node and a receiving node.SOLUTION: When the sending node receives link state reports from the receiving node, the sending node estimates the current state of the wireless link. The sending node also determines a measurement adjusting parameter if the link state reports are deemed inaccurate in relation to the estimated link state, on the basis of a deviation between the received link state reports and the estimated actual link state. The sending node then sends the determined measurement adjusting parameter to the receiving node. The receiving node provides a link state report based on signal measurements adjusted by the measurement adjusting parameter. The adjusted link state report is used for at least any of link adaptation of the wireless link and packet scheduling decisions.
摘要:
A base station apparatus includes a correction unit for correcting a CQI reported from a user apparatus and a scheduler for scheduling based on the corrected CQI. The correction unit uses a correction table to correct the CQI such that if the reported CQI is poor, the CQI is slightly reduced, and otherwise, the CQI is significantly reduced. One method of generating the correction table includes deriving a first SINR in consideration of the number of interference users less than (n-1) and a second SINR in consideration of the number of interference users equal to (n-1) to explore a distribution of the second SINR to the first SINR. In this method, correspondence between the first SINR and the second SINR is determined based on the distribution to generate the correction table.
摘要:
PROBLEM TO BE SOLVED: To facilitate accurately determining and reporting channel quality indicator (CQI).SOLUTION: A Node B may send power information that may be used by UE to determine a power per channelization code, P. The power information includes a power offset between the power of a data channel, P, and the power of a pilot channel. The Node B may determine Pon the basis of the power available for the data channel, the number of available channelization codes, and a designated number of channelization codes. The UE may determine Pon the basis of the power information from the Node B and the designated number of channelization codes. The UE may estimate at least one SINR of at least one transport block on the basis of P, determine CQI information for the transport block on the basis of the SINR, and send the CQI information to the Node B.