Method and apparatus for bit mapping for downlink control channel in wireless communication system
First Claim
1. A method for mapping, by a base station, a bit of an enhanced physical downlink control channel (e-PDCCH) in a wireless communication system, the method comprising:
- mapping an e-PDCCH bit to a first region to which the e-PDCCH is allocated in a data region within a subframe;
mapping a redundant bit of the e-PDCCH bit to a second region including at least one orthogonal frequency division multiplexing (OFDM) symbol between a control region and the first region within the subframe; and
transmitting the mapped e-PDCCH bit and the redundant bit to a user equipment,wherein the e-PDCCH bit is mapped from a kth OFDM symbol within the subframe in a direction of an increasing OFDM symbol index,wherein the redundant bit is mapped from a (k−
1)th OFDM symbol within the subframe in a direction of a decreasing OFDM symbol index, andwherein the transmission of the mapped e-PDCCH bit and the redundant bit to the user equipment is for allocating a new control channel.
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Abstract
A method and an apparatus for mapping a bit of an enhanced physical downlink control channel (e-PDCCH) in a wireless communication system are provided. A base station maps an e-PDCCH bit on a first region to which the e-PDCCH is allocated from a data region within a subframe, and maps a redundant bit of the e-PDCCH bit on a second region, which is between a control region and the first region within the subframe, including at least one orthogonal frequency division multiplexing symbol (OFDM). The e-PDCCH bit is mapped from a kth OFDM symbol within the subframe in the direction of an increasing OFDM symbol index, and the redundant bit is mapped from a (k−1)th OFDM symbol in the direction of a decreasing OFDM symbol index.
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Citations
13 Claims
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1. A method for mapping, by a base station, a bit of an enhanced physical downlink control channel (e-PDCCH) in a wireless communication system, the method comprising:
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mapping an e-PDCCH bit to a first region to which the e-PDCCH is allocated in a data region within a subframe; mapping a redundant bit of the e-PDCCH bit to a second region including at least one orthogonal frequency division multiplexing (OFDM) symbol between a control region and the first region within the subframe; and transmitting the mapped e-PDCCH bit and the redundant bit to a user equipment, wherein the e-PDCCH bit is mapped from a kth OFDM symbol within the subframe in a direction of an increasing OFDM symbol index, wherein the redundant bit is mapped from a (k−
1)th OFDM symbol within the subframe in a direction of a decreasing OFDM symbol index, andwherein the transmission of the mapped e-PDCCH bit and the redundant bit to the user equipment is for allocating a new control channel. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for decoding, by a user equipment, an enhanced physical downlink control channel (e-PDCCH) in a wireless communication system, the method comprising:
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searching a first region to which the e-PDCCH is allocated in a data region within a subframe, and a second region including at least one orthogonal frequency division multiplexing (OFDM) symbol between a control region and the first region within the subframe; and decoding an e-PDCCH bit and a redundant bit received from the first region and the second region, wherein the e-PDCCH bit is mapped from a kth OFDM symbol within the subframe in a direction of an increasing OFDM symbol index, wherein the redundant bit is mapped from a (k−
1)th OFDM symbol within the subframe in a direction of a decreasing OFDM symbol index, andwherein the decoding of the e-PDCCH bit and the redundant bit is for allocating a new control channel. - View Dependent Claims (8, 9, 10)
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11. A base station for mapping a bit of an enhanced physical downlink control channel (e-PDCCH) in a wireless communication system, the base station comprising:
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a radio frequency (RF) unit for transmitting or receiving a radio signal, and a processor coupled to the RF unit, and configured to; map an e-PDCCH bit to a first region to which the e-PDCCH is allocated in a data region within a subframe; map a redundant bit of the e-PDCCH bit to a second region including at least one orthogonal frequency division multiplexing (OFDM) symbol between a control region and the first region within the subframe; and transmit the mapped e-PDCCH bit and the redundant bit to a user equipment, wherein the e-PDCCH bit is mapped from a kth OFDM symbol within the subframe in a direction of an increasing OFDM symbol index, wherein the redundant bit is mapped from a (k−
1)th OFDM symbol within the subframe in a direction of a decreasing OFDM symbol index, andwherein the transmission of the mapped e-PDCCH bit and the redundant bit to the user equipment is for allocating a new control channel. - View Dependent Claims (12, 13)
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Specification