Abstract:
Embodiments of the present invention provide a data transmission method that relates to the field of communications technologies and is invented for effectively improving the spectrum efficiency of data transmission. The data transmission method includes: mapping, to a resource element according to a preset rule, data that needs to be transmitted to a user equipment, where the preset rule includes: mapping data to the resource element corresponding to a non-zero power CSI-RS in a first set of the user equipment, unless the resource element is a specific resource element, where the specific resource element includes a resource element that is among the resource elements corresponding to the non-zero power CSI-RS in the first set and overlaps a resource element corresponding to a zero power CSI-RS; and transmitting the mapped data to the user equipment. The present invention is applicable to a radio communications system such as Long Term Evolution.
Abstract:
The present disclosure relates to channel state feedback in a communication system. The method includes obtaining a reference signal from an access point; deriving a rank indication, a codebook subset selection indication and a precoding matrix index based on the obtained reference signal; sending a first feedback message conveying the rank indication and the codebook subset selection indication, and sending a second feedback message conveying the precoding matrix index, to the access point; and receiving, from the access point, data precoded by a matrix derived based on the rank indication, the codebook subset selection indication and the precoding matrix index.
Abstract:
Method and device for notifying reference signal configuration information are disclosed. Channel state information-reference signal (CSI-RS) configuration information is coded, to obtain one or more CSI-RS configuration codes. The CSI-RS configuration codes are sent to a terminal device. The terminal device determines, based on CSI-RS configuration codes, CSI-RS configuration information such as a quantity of antenna ports for transmitting a CSI-RS, a CSI-RS pattern, a CSI-RS period and an offset corresponding to the CSI-RS period.
Abstract:
Method and device for notifying reference signal configuration information are disclosed. Channel state information-reference signal (CSI-RS) configuration information is coded, to obtain one or more CSI-RS configuration codes. The CSI-RS configuration codes are sent to a terminal device. The terminal device determines, based on CSI-RS configuration codes, CSI-RS configuration information such as a quantity of antenna ports for transmitting a CSI-RS, a CSI-RS pattern, a CSI-RS period and an offset corresponding to the CSI-RS period.
Abstract:
Method and device for notifying reference signal configuration information are disclosed. Channel state information-reference signal (CSI-RS) configuration information is coded, to obtain one or more CSI-RS configuration codes. The CSI-RS configuration codes are sent to a terminal device. The terminal device determines, based on CSI-RS configuration codes, CSI-RS configuration information such as a quantity of antenna ports for transmitting a CSI-RS, a CSI-RS pattern, a CSI-RS period and an offset corresponding to the CSI-RS period.
Abstract:
A method and a device for notifying reference signal configuration information are disclosed. Channel state information-reference signal (CSI-RS) configuration information is coded, to obtain a CSI-RS configuration information code. A mapping relation between the CSI-RS configuration information code and the CSI-RS configuration information is stored. A CSI-RS configuration information code corresponding to CSI-RS configuration information to be notified is searched in the stored mapping relation between the CSI-RS configuration information code and the CSI-RS configuration information. The searched CSI-RS configuration information code is sent to a user equipment (UE), so that the UE determines CSI-RS configuration information according to the received CSI-RS configuration information code and the mapping relation between the CSI-RS configuration information code and the CSI-RS configuration information.
Abstract:
A method and a device for notifying reference signal configuration information are disclosed. Channel state information-reference signal (CSI-RS) configuration information is coded, to obtain a CSI-RS configuration information code. A mapping relation between the CSI-RS configuration information code and the CSI-RS configuration information is stored. A CSI-RS configuration information code corresponding to CSI-RS configuration information to be notified is searched in the stored mapping relation between the CSI-RS configuration information code and the CSI-RS configuration information. The searched CSI-RS configuration information code is sent to a user equipment (UE), so that the UE determines CSI-RS configuration information according to the received CSI-RS configuration information code and the mapping relation between the CSI-RS configuration information code and the CSI-RS configuration information.
Abstract:
The present invention provides a method for processing a reference signal, a user equipment, and a base station. The method includes: obtaining, by a UE, a first reference signal resource set, where the first signal resource set includes at least one first reference signal resource; and executing, by the UE, an operation of performing a co-location assumption process for at least one antenna port indicated by each first reference signal resource.
Abstract:
Embodiments of the present invention provide a method and device for reporting reference signal received power. A base station determines at least one first channel-state information reference signal CSI-RS resource used by a terminal to report reference signal received power RSRP, where the first CSI-RS resource includes at least one antenna port group, and the antenna port group includes at least one antenna port; the base station sends first CSI-RS resource configuration information to the terminal, where the first CSI-RS resource configuration information carries the at least one first CSI-RS resource; and the base station receives RSRP that is of each antenna port group included in the first CSI-RS resource and is reported by the terminal. The embodiments of the present invention save overheads of reporting RSRP.
Abstract:
The present invention provides a reference signal sending method, a receiving method and an apparatus. The sending method includes: determining, by a base station, a parameter configuration format for the reference signal from the at least two sets of parameter configuration formats, where the reference signal is configured with at least two sets of parameter configuration formats of the reference signal, and at least one parameter in different parameter configuration formats of the reference signal has a different configuration granularity; and performing, by the base station, parameter configuration for the reference signal by using the determined parameter configuration format, and sending the reference signal to a terminal.