Method and device for sending and receiving EPDCCH, base station, and user equipment
First Claim
Patent Images
1. A method for sending enhanced Physical Downlink Control Channel (ePDCCH), comprising:
- a base station mapping enhanced resource element groups (eREGs) corresponding to the ePDCCH to different resource elements, wherein each of the eREGs corresponding to the ePDCCH is located in one physical resource block pair, the base station mapping the eREGs corresponding to the ePDCCH to different resource elements comprises;
the base station partitioning physical resource block pairs corresponding to the ePDCCH into eREGs, and the base station mapping the ePDCCH to predefined eREGs; and
the base station sending the ePDCCH on the resource elements;
wherein the base station partitioning the physical resource block pairs corresponding to the ePDCCH into eREGs comprises;
the base station numbering resource elements used for the ePDCCH according to an order of a time domain first and then a frequency domain or an order of the frequency domain first and then the time domain; and
partitioning the numbered resource elements into eREGs;
wherein partitioning the numbered resource elements into eREGs comprises one of the following;
partitioning the numbered resource elements into the eREGs at equal intervals;
partitioning the numbered resource elements into the eREGs in a continuous manner according to the sequence of the numbered resource elements;
inputting the numbered resource elements into a subblock interleaver, and sequentially partitioning resource elements output from the subblock interleaver into the eREGs; and
inputting the numbered resource elements into a subblock interleaver, performing cyclic shift for resource elements output from the subblock interleaver, and then partitioning resource elements subjected to the cyclic shift into the eREGs.
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Abstract
Provided are a method and a device for sending and receiving an ePDCCH, a base station, and user equipment. The method includes: a base station mapping enhanced resource element groups (eREGs) corresponding to an ePDCCH to different resource elements, wherein each of the eREGs corresponding to the ePDCCH is located in one physical resource block pair; and the base station sending the ePDCCH on the resource elements. The disclosure improves the reliability and resource utilization of ePDCCH transmission.
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Citations
21 Claims
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1. A method for sending enhanced Physical Downlink Control Channel (ePDCCH), comprising:
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a base station mapping enhanced resource element groups (eREGs) corresponding to the ePDCCH to different resource elements, wherein each of the eREGs corresponding to the ePDCCH is located in one physical resource block pair, the base station mapping the eREGs corresponding to the ePDCCH to different resource elements comprises;
the base station partitioning physical resource block pairs corresponding to the ePDCCH into eREGs, and the base station mapping the ePDCCH to predefined eREGs; andthe base station sending the ePDCCH on the resource elements; wherein the base station partitioning the physical resource block pairs corresponding to the ePDCCH into eREGs comprises;
the base station numbering resource elements used for the ePDCCH according to an order of a time domain first and then a frequency domain or an order of the frequency domain first and then the time domain; and
partitioning the numbered resource elements into eREGs;wherein partitioning the numbered resource elements into eREGs comprises one of the following;
partitioning the numbered resource elements into the eREGs at equal intervals;
partitioning the numbered resource elements into the eREGs in a continuous manner according to the sequence of the numbered resource elements;
inputting the numbered resource elements into a subblock interleaver, and sequentially partitioning resource elements output from the subblock interleaver into the eREGs; and
inputting the numbered resource elements into a subblock interleaver, performing cyclic shift for resource elements output from the subblock interleaver, and then partitioning resource elements subjected to the cyclic shift into the eREGs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for receiving enhanced Physical Downlink Control Channel (ePDCCH), comprising:
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user equipment (UE) determining resource elements to which enhanced resource element groups (eREGs) corresponding to an ePDCCH are mapped, wherein each of the eREGs corresponding to the ePDCCH is located in one physical resource block pair; and the UE receiving the ePDCCH on the resource elements; wherein the eREGs corresponding to the ePDCCH are mapped to different resource elements by the following manners;
the base station partitioning physical resource block pairs corresponding to the ePDCCH into eREGs; and
the base station mapping the ePDCCH to predefined eREGs;
wherein the base station partitioning the physical resource block pairs corresponding to the ePDCCH into the eREGs comprises;
the base station numbering resource elements used for the ePDCCH according to an order of a time domain first and then a frequency domain or an order of the frequency domain first and then the time domain; and
partitioning the numbered resource elements into eREGs;wherein partitioning the numbered resource elements into eREGs comprises one of the following;
partitioning the numbered resource elements into the eREGs at equal intervals;
partitioning the numbered resource elements into the eREGs in a continuous manner according to the sequence of the numbered resource elements;
inputting the numbered resource elements into a subblock interleaver, and sequentially partitioning resource elements output from the subblock interleaver into the eREGs; and
inputting the numbered resource elements into a subblock interleaver, performing cyclic shift for resource elements output from the subblock interleaver, and then partitioning resource elements subjected to the cyclic shift into the eREGs. - View Dependent Claims (10, 11, 12, 13)
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14. A device for sending enhanced Physical Downlink Control Channel (ePDCCH) applied to a base station, wherein the device for sending the ePDCCH comprises:
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a first mapping component configured to map enhanced resource element groups (eREGs) corresponding to the ePDCCH to different resource elements, wherein each of the eREGs corresponding to the ePDCCH is located in one physical resource block pair, and the first mapping component comprises;
a second partitioning component configured to partition physical resource block pairs corresponding to the ePDCCH into eREGs, and a third mapping component configured to map the ePDCCH to predefined eREGs; anda sending component configured to send the ePDCCH on the resource elements; wherein the second partitioning component comprises;
a numbering component configured to number resource elements used for the ePDCCH according to an order of a time domain first and then a frequency domain or an order of the frequency domain first and then the time domain; and
a third partitioning component configured to partition the numbered resource elements into eREGs;wherein the third partitioning component is configured to partition the numbered resource elements into eREGs by one of the following manners;
partitioning the numbered resource elements into the eREGs at equal intervals;
partitioning the numbered resource elements into the eREGs in a continuous manner according to the sequence of the numbered resource elements;
inputting the numbered resource elements into a subblock interleaver, and sequentially partitioning resource elements output from the subblock interleaver into the eREGs; and
inputting the numbered resource elements into a subblock interleaver, performing cyclic shift for resource elements output from the subblock interleaver, and then partitioning resource elements subjected to the cyclic shift into the eREGs. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A device for receiving an enhanced Physical Downlink Control Channel (ePDCCH) applied to user equipment (UE), wherein the device for receiving the ePDCCH comprises:
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a determination component configured to determine resource elements to which configured for determining corresponding to the ePDCCH are mapped, wherein each of the eREGs corresponding to the ePDCCH is located in one physical resource block pair; and a receiving component configured to receive the ePDCCH on the resource elements; wherein the eREGs corresponding to the ePDCCH are mapped to different resource elements by the following manners;
partitioning physical resource block pairs corresponding to the ePDCCH into eREGs; and
mapping the ePDCCH to predefined eREGs;
wherein partitioning the physical resource block pairs corresponding to the ePDCCH into the eREGs comprises;
numbering resource elements used for the ePDCCH according to an order of a time domain first and then a frequency domain or an order of the frequency domain first and then the time domain; and
partitioning the numbered resource elements into eREGs;wherein partitioning the numbered resource elements into eREGs comprises one of the following;
partitioning the numbered resource elements into the eREGs at equal intervals;
partitioning the numbered resource elements into the eREGs in a continuous manner according to the sequence of the numbered resource elements;
inputting the numbered resource elements into a subblock interleaver, and sequentially partitioning resource elements output from the subblock interleaver into the eREGs; and
inputting the numbered resource elements into a subblock interleaver, performing cyclic shift for resource elements output from the subblock interleaver, and then partitioning resource elements subjected to the cyclic shift into the eREGs. - View Dependent Claims (21)
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Specification