Method and device for monitoring control channel in a wireless communication system
First Claim
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1. A method for monitoring a control channel in a wireless communication system, the method comprising:
- receiving a control format indicator (CFI) on a physical control format indicator channel (PCFICH) in a subframe including a control region and a data region, the CFI on the PCFICH indicating a number of orthogonal frequency division multiplexing (OFDM) symbols for the control region of the subframe,wherein remaining OFDM symbols are used for the data region;
determining whether an extended control region is present in the remaining OFDM symbols used for the data region of the subframe based on whether the CFI on the PCFICH indicates a maximum number of OFDM symbols or not,wherein if the CFI on the PCFICH indicates the maximum number of OFDM symbols used for the control region, the extended control region is determined to be present in the remaining OFDM symbols used for the data region of the subframe; and
if the extended control region is determined to be present in the remaining OFDM symbols used for the data region of the subframe, monitoring a physical downlink control channel (PDCCH) in the control region and the extended control region; and
receiving extended control information regarding the extended control region in the subframe through a second downlink control channel.
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Abstract
Discloses are a method and device for monitoring a control channel in a wireless communication system. A user equipment receives a CFI (control format indicator), indicating a size of a control region within a subframe, via a first downlink control channel and confirms whether or not an extended control region is present in the subframe. If the extended control region is present in the subframe, the user equipment monitors a PDCCH (physical downlink control channel) within the control region and the extended control region.
4 Citations
12 Claims
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1. A method for monitoring a control channel in a wireless communication system, the method comprising:
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receiving a control format indicator (CFI) on a physical control format indicator channel (PCFICH) in a subframe including a control region and a data region, the CFI on the PCFICH indicating a number of orthogonal frequency division multiplexing (OFDM) symbols for the control region of the subframe, wherein remaining OFDM symbols are used for the data region; determining whether an extended control region is present in the remaining OFDM symbols used for the data region of the subframe based on whether the CFI on the PCFICH indicates a maximum number of OFDM symbols or not, wherein if the CFI on the PCFICH indicates the maximum number of OFDM symbols used for the control region, the extended control region is determined to be present in the remaining OFDM symbols used for the data region of the subframe; and if the extended control region is determined to be present in the remaining OFDM symbols used for the data region of the subframe, monitoring a physical downlink control channel (PDCCH) in the control region and the extended control region; and receiving extended control information regarding the extended control region in the subframe through a second downlink control channel. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A user equipment configured for monitoring a control channel in a wireless communication system, the user equipment comprising:
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a radio frequency (RF) unit configured to transmit and receive a radio signal; and a processor coupled to the RF unit, wherein the processor is configured to; receive a control format indicator (CFI) on a physical control format indicator channel (PCFICH) in a subframe including a control region and a data region, the CFI on the PCFICH indicating a number of orthogonal frequency division multiplexing (OFDM) symbols for the control region of the subframe, wherein remaining OFDM symbols are used for the data region; determine whether an extended control region is present in the remaining OFDM symbols used for the data region of the subframe based on whether the CFI on the PCFICH indicates a maximum number of OFDM symbols or not, wherein if the CFI on the PCFICH indicates the maximum number of OFDM symbols used for the control region, the extended control region is determined to be present in the remaining OFDM symbols used for the date region of the subframe; and if the extended control region is determined to be present in the remaining OFDM symbols used for the data region of the subframe, monitor a physical downlink control channel (PDCCH) in the control region and the extended control region, wherein the processor is further configured to receive extended control information regarding the extended control region in the subframe through a second downlink control channel. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification