Abstract:
A method for determining a precoding matrix indicator, user equipment, and a base station are disclosed in embodiments of the present invention. The method includes: receiving a first reference signal set sent by a base station, where the first reference signal set is associated with a user equipment-specific matrix or matrix set; selecting a precoding matrix based on the first reference signal set, where the precoding matrix is a function of the user equipment-specific matrix or matrix set; and sending a precoding matrix indicator to the base station, where the precoding matrix indicator corresponds to the selected precoding matrix. In the embodiments of the present invention, CSI feedback precision can be improved without excessively increasing feedback overhead, thereby improving system performance.
Abstract:
The present invention relates to the field of the mobile communications technologies, and in particular, to a wireless transmission path selection method and apparatus. In this solution, according to corresponding precoding information, a CQI of each wireless transmission path and/or orthogonality information of channel propagation directions from any two candidate transmission nodes in a candidate transmission node set to a wireless transmission path selection node are/is determined. Both the precoding information and the orthogonality information of the channel propagation directions are related to spatial beamforming. Therefore, interference imposed by spatial beamforming on a signal is considered during wireless transmission path selection, improving accuracy of a determined wireless transmission path, and improving capacity resource utilization.
Abstract:
A method for determining a precoding matrix indicator, user equipment, and a base station are disclosed in embodiments of the present invention. The method includes: receiving a first reference signal set sent by a base station, where the first reference signal set is associated with a user equipment-specific matrix or matrix set; selecting a precoding matrix based on the first reference signal set, where the precoding matrix is a function of the user equipment-specific matrix or matrix set; and sending a precoding matrix indicator to the base station, where the precoding matrix indicator corresponds to the selected precoding matrix. In the embodiments of the present invention, CSI feedback precision can be improved without excessively increasing feedback overhead, thereby improving system performance.
Abstract:
A method for determining a precoding matrix indicator, user equipment, and a base station are disclosed in embodiments of the present invention. The method includes: receiving a first reference signal set sent by a base station, where the first reference signal set is associated with a user equipment-specific matrix or matrix set; selecting a precoding matrix based on the first reference signal set, where the precoding matrix is a function of the user equipment-specific matrix or matrix set; and sending a precoding matrix indicator to the base station, where the precoding matrix indicator corresponds to the selected precoding matrix. In the embodiments of the present invention, CSI feedback precision can be improved without excessively increasing feedback overhead, thereby improving system performance.
Abstract:
Embodiments of the present invention relate to a method and an apparatus for feeding back a CSI-RS resource combination, a user equipment, and a base station. The method includes: acquiring information of a CSI-RS resource combination; determining a candidate CSI-RS resource combination according to the information of the CSI-RS resource combination, and performing a joint CSI measurement according to one or more sets of CSI-RS resources in the candidate CSI-RS resource combination, so as to select a CSI-RS resource combination according to a measurement result of the joint CSI measurement; and feeding back the selected CSI-RS resource combination and the measurement result of the joint CSI measurement corresponding to the selected CSI-RS resource combination to a base station.
Abstract:
The present invention discloses a method, a device, and a system for measuring channel state information, which relate to the communications field. The method includes: transmitting, by a base station BS, multiple sets of channel state indication reference signal CSI-RS resources; and notifying a user equipment UE of an aggregation mode of the CSI-RS resources, so that after the UE aggregates the multiple sets of CSI-RS resources according to the aggregation mode of the CSI-RS resources to form a measurement source, the UE performs CSI measurement according to a channel corresponding to CSI-RS ports on the measurement source.
Abstract:
A method and an apparatus for providing a service to a user are provided. The method mainly includes that a mobile communication system on a network side receives call information of calling a mobile terminal of a user and then calls the user according to stored location information corresponding to the mobile terminal of the user sent by an access gateway AG. The AP is deployed at the enterprise to implement accurate positioning of a user that enters or leaves an office of an enterprise and update to a mobile communication system on a network side through the AG in real time. Therefore, the accurate positioning of a mobile terminal of a user no longer has to rely on the network coverage of the PLMN.
Abstract:
A method for determining a precoding matrix indicator, user equipment, and a base station are disclosed in embodiments of the present invention. The method includes: receiving a first reference signal set sent by a base station, where the first reference signal set is associated with a user equipment-specific matrix or matrix set; selecting a precoding matrix based on the first reference signal set, where the precoding matrix is a function of the user equipment-specific matrix or matrix set; and sending a precoding matrix indicator to the base station, where the precoding matrix indicator corresponds to the selected precoding matrix. In the embodiments of the present invention, CSI feedback precision can be improved without excessively increasing feedback overhead, thereby improving system performance.
Abstract:
A method for determining a precoding matrix indicator, user equipment, and a base station are disclosed in embodiments of the present invention. The method includes: receiving a first reference signal set sent by a base station, where the first reference signal set is associated with a user equipment-specific matrix or matrix set; selecting a precoding matrix based on the first reference signal set, where the precoding matrix is a function of the user equipment-specific matrix or matrix set; and sending a precoding matrix indicator to the base station, where the precoding matrix indicator corresponds to the selected precoding matrix. In the embodiments of the present invention, CSI feedback precision can be improved without excessively increasing feedback overhead, thereby improving system performance.
Abstract:
A method for determining a precoding matrix indicator, user equipment, and a base station are disclosed in embodiments of the present invention. The method includes: receiving a first reference signal set sent by a base station, where the first reference signal set is associated with a user equipment-specific matrix or matrix set; selecting a precoding matrix based on the first reference signal set, where the precoding matrix is a function of the user equipment-specific matrix or matrix set; and sending a precoding matrix indicator to the base station, where the precoding matrix indicator corresponds to the selected precoding matrix. In the embodiments of the present invention, CSI feedback precision can be improved without excessively increasing feedback overhead, thereby improving system performance.