摘要:
Embodiments of the present invention disclose a downlink Inter-Cell Interference Coordination (ICIC) method and relate to the wireless communication field. The method includes: obtaining information about multiple carriers in a current cell; obtaining, according to the information about the multiple carriers, a downlink ICIC parameter corresponding to each carrier of the multiple carriers; and sending the downlink ICIC parameter corresponding to each carrier to a neighboring cell of the current cell so as to enable the neighboring cell to perform, according to the downlink ICIC parameter, downlink interference coordination with the first cell. The embodiments of the present invention are applicable to downlink ICIC in a multi-carrier system.
摘要:
A method for controlling uplink power of an LTE system, a base station, and a mobile terminal are disclosed according to the embodiments of the present invention. The method includes: obtaining uplink transmit power of each carrier; sending first notification signaling to a base station if a difference between the obtained uplink transmit power of each carrier exceeds a specific threshold; and sending second notification signaling to the base station if a sum of the obtained uplink transmit power of each carrier exceeds a preset threshold. Thresholds are determined according to network conditions, and uplink power of a carrier is adjusted in a balanced way, a bit error rate is reduced and a case that a low-performance carrier is forced to be interrupted is prevented.
摘要:
A method for controlling uplink power of an LTE system, a base station, and a mobile terminal are disclosed according to the embodiments of the present invention. The method includes: obtaining uplink transmit power of each carrier; sending first notification signaling to a base station if a difference between the obtained uplink transmit power of each carrier exceeds a specific threshold; and sending second notification signaling to the base station if a sum of the obtained uplink transmit power of each carrier exceeds a preset threshold. Thresholds are determined according to network conditions, and uplink power of a carrier is adjusted in a balanced way, a bit error rate is reduced and a case that a low-performance carrier is forced to be interrupted is prevented.
摘要:
A method and a system for selecting a pre-coding matrix in a closed loop MIMO system are provided. The method includes: traversing all pre-coding matrices and respectively calculating a CINR corresponding to each pre-coding matrix; and obtaining an MCS according to a CINR corresponding to a pre-coding matrix, calculating a spectral efficiency corresponding to the MCS, and selecting a pre-coding matrix with a largest spectral efficiency. According to the method and system provided by the present disclosure, an appropriate pre-coding matrix can be selected. By using the appropriate pre-coding matrix in the closed loop MIMO system, the channel quality, the throughput of a closed loop multiplexing system in the scenario that the channel changes slowly, and the gain can be improved. Besides, the method of the present disclosure can avoid calculation of the BER formula on the premise of a large number of assumptions, and reduce the computation complexity.
摘要:
Embodiments of the present invention disclose a downlink Inter-Cell Interference Coordination (ICIC) method and relate to the wireless communication field. The method includes: obtaining information about multiple carriers in a current cell; obtaining, according to the information about the multiple carriers, a downlink ICIC parameter corresponding to each carrier of the multiple carriers; and sending the downlink ICIC parameter corresponding to each carrier to a neighboring cell of the current cell so as to enable the neighboring cell to perform, according to the downlink ICIC parameter, downlink interference coordination with the first cell. The embodiments of the present invention are applicable to downlink ICIC in a multi-carrier system.
摘要:
A method and a system for selecting a pre-coding matrix in a closed loop MIMO system are provided. The method includes: traversing all pre-coding matrices and respectively calculating a CINR corresponding to each pre-coding matrix; and obtaining an MCS according to a CINR corresponding to a pre-coding matrix, calculating a spectral efficiency corresponding to the MCS, and selecting a pre-coding matrix with a largest spectral efficiency. According to the method and system provided by the present disclosure, an appropriate pre-coding matrix can be selected. By using the appropriate pre-coding matrix in the closed loop MIMO system, the channel quality, the throughput of a closed loop multiplexing system in the scenario that the channel changes slowly, and the gain can be improved. Besides, the method of the present disclosure can avoid calculation of the BER formula on the premise of a large number of assumptions, and reduce the computation complexity.