Method and device for setting channel status information measuring resource in a wireless communication system
First Claim
Patent Images
1. A method for transmitting channel status information (CSI) by a User Equipment (UE) in a wireless communication system, comprising:
- determining signal characteristics and interference characteristics in a virtual reference resource for calculation of the CSI;
determining the CSI using the determined signal characteristics and interference characteristics; and
transmitting the CSI in a subframe n to an eNodeB (eNB),wherein the virtual reference resource is present in a subframe n−
k (k≧
4),wherein the determining signal characteristics includes determining whether the subframe n−
k to which the virtual reference resource is set includes a valid downlink subframe or an invalid downlink subframe,wherein the signal characteristics are determined from a signal measurement result through the virtual reference resource when the subframe n−
k is determined to be the valid downlink subframe or an average of measurement results of previously received reference signals when the subframe n−
k is determined to be the invalid downlink subframe,wherein the interference characteristics are determined from a result of interference measurement in the virtual reference resource when the subframe n−
k is determined to be the valid downlink subframe or an average of measurement results of previously set interference measurement resources when the subframe n−
k is determined to be the invalid downlink subframe, andwherein the valid downlink subframeis set for the UE,is not multicast or broadcast over a single frequency network (MBSFN) subframe in transmission modes other than a transmission mode for downlink transmission of a maximum of 8 layers,does not include a downlink pilot time slot (DwPTS) field less than a predetermined length, anddoes not belong to a measurement gap set for the UE.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a wireless communication system, and more specifically, discloses a method and a device for setting a channel status information (CSI) measuring resource in a wireless communication system. The present invention provides a way to transmit/receive the CSI more accurately and efficiently by setting a virtual reference resource for measuring the CSI.
-
Citations
11 Claims
-
1. A method for transmitting channel status information (CSI) by a User Equipment (UE) in a wireless communication system, comprising:
-
determining signal characteristics and interference characteristics in a virtual reference resource for calculation of the CSI; determining the CSI using the determined signal characteristics and interference characteristics; and transmitting the CSI in a subframe n to an eNodeB (eNB), wherein the virtual reference resource is present in a subframe n−
k (k≧
4),wherein the determining signal characteristics includes determining whether the subframe n−
k to which the virtual reference resource is set includes a valid downlink subframe or an invalid downlink subframe,wherein the signal characteristics are determined from a signal measurement result through the virtual reference resource when the subframe n−
k is determined to be the valid downlink subframe or an average of measurement results of previously received reference signals when the subframe n−
k is determined to be the invalid downlink subframe,wherein the interference characteristics are determined from a result of interference measurement in the virtual reference resource when the subframe n−
k is determined to be the valid downlink subframe or an average of measurement results of previously set interference measurement resources when the subframe n−
k is determined to be the invalid downlink subframe, andwherein the valid downlink subframe is set for the UE, is not multicast or broadcast over a single frequency network (MBSFN) subframe in transmission modes other than a transmission mode for downlink transmission of a maximum of 8 layers, does not include a downlink pilot time slot (DwPTS) field less than a predetermined length, and does not belong to a measurement gap set for the UE. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A user equipment (UE) configured to transmit CSI in a wireless communication system, comprising:
-
a receiver configured to receive a downlink signal from an eNB; a transmitter configured to transmit an uplink signal to the eNB; and a processor configured to control the UE including the receiver and the transmitter, wherein the processor is configured to determine signal characteristics and interference characteristics in a virtual reference resource for calculation of the CSI, to determine the CSI using the determined signal characteristics and interference characteristics, and to transmit the CSI to the eNodeB (eNB) in a subframe n via the transmitter, wherein the virtual reference resource is present in a subframe n−
k (k≧
4),wherein the processor is further configured to determine whether the subframe n−
k to which the virtual reference resource is set includes a valid downlink subframe or an invalid downlink subframe,wherein the signal characteristics are determined from a signal measurement result through the reference resource when the subframe n−
k is determined to be the valid downlink subframe or an average of measurement results of previously received reference signals when the subframe n−
k is determined to be the invalid downlink subframe,wherein the interference characteristics are determined from a result of interference measurement in the virtual reference resource when the subframe n−
k is determined to be the valid downlink subframe or an average of measurement results of previously set interference measurement when the subframe n−
k is determined to be the invalid downlink subframe, andwherein the valid downlink subframe is set for the UE, is not multicast or broadcast over a single frequency network (MBSFN) subframe in transmission modes other than a transmission mode for downlink transmission of a maximum of 8 layers, does not include a downlink pilot time slot (DwPTS) field less than a predetermined length, and does not belong to a measurement gap set for the UE.
-
Specification