Control channel monitoring method and device
First Claim
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1. A method for monitoring a control region in a wireless communication system, the method comprising:
- receiving, by a user equipment (UE), configuration information indicating at least one sub-frame among the plurality of sub-frames, wherein the at least one sub-frame includes an extended control region, and wherein the extended control region is included in a data region which exists in a whole orthogonal frequency division multiplexing (OFDM) symbol of the at least one sub-frame;
if the at least one sub-frame is a special sub-frame, receiving, by the UE, a cell-specific reference signal (CRS) in a downlink pilot time slot (DwPTS) of the special sub-frame, or if the at least one sub-frame is not the special sub-frame, receiving, by the UE, a UE-specific reference signal (URS) in the extended control region, wherein the CRS is used to estimate the extended control region by a whole UE in a cell, and wherein the URS is used to estimate the extended control region by a specific UE in the cell; and
if the at least one sub-frame is the special sub-frame, monitoring, by the UE, the extended control region using the CRS, or if the at least one sub-frame is not the special sub-frame, monitoring, by the UE in a first OFDM symbol of the at least one sub-frame, the extended control region using the URS.
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Abstract
The present invention relates to a method and device for monitoring a control channel in a wireless communication system. A terminal receives a UE-specific reference signal (URS) from at least one extended subframe, and monitors a control channel in an extended control channel region of the at least one extended subframe. The control channel is demodulated using the URS.
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Citations
11 Claims
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1. A method for monitoring a control region in a wireless communication system, the method comprising:
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receiving, by a user equipment (UE), configuration information indicating at least one sub-frame among the plurality of sub-frames, wherein the at least one sub-frame includes an extended control region, and wherein the extended control region is included in a data region which exists in a whole orthogonal frequency division multiplexing (OFDM) symbol of the at least one sub-frame; if the at least one sub-frame is a special sub-frame, receiving, by the UE, a cell-specific reference signal (CRS) in a downlink pilot time slot (DwPTS) of the special sub-frame, or if the at least one sub-frame is not the special sub-frame, receiving, by the UE, a UE-specific reference signal (URS) in the extended control region, wherein the CRS is used to estimate the extended control region by a whole UE in a cell, and wherein the URS is used to estimate the extended control region by a specific UE in the cell; and if the at least one sub-frame is the special sub-frame, monitoring, by the UE, the extended control region using the CRS, or if the at least one sub-frame is not the special sub-frame, monitoring, by the UE in a first OFDM symbol of the at least one sub-frame, the extended control region using the URS. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A user equipment (UE) for monitoring a control region in a wireless communication system, the UE comprising:
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an RF (radio frequency) unit transmitting and receiving a radio signal; and a processor connected with the RF unit, wherein the processor is configured to; receive configuration information indicating at least one sub-frame of the plurality of sub-frames, wherein the at least one sub-frame includes an extended control region, and wherein the extended control region is included in a data region which exists in a whole orthogonal frequency division multiplexing (OFDM) symbol of the at least one sub-frame, if the at least one sub-frame is a special sub-frame, receive, by the UE, a cell-specific reference signal (CRS) in a downlink pilot time slot (DwPTS) of the special sub-frame, or if the at least one sub-frame is not the special sub-frame, receive, by the UE, a UE-specific reference signal (URS) in the extended control region, wherein the CRS is used to estimate the extended control region by a whole UE in a cell, and wherein the URS is used to estimate the extended control region by a specific UE in the cell, and if the at least one sub-frame is the special sub-frame, monitor, by the UE, the extended control region using the CRS, or if the at least one sub-frame is not the special sub-frame, monitor, by the UE in a first OFDM symbol of the at least one sub-frame, the extended control region using the URS. - View Dependent Claims (9, 10, 11)
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Specification