Method for mapping control channel resources, base station, and user equipment

A method for mapping control channel resources, the method comprising:

• determining, according to whether a subframe is a special subframe or an ordinary subframe and whether the subframe is a normal cyclic prefix subframe or an extended cyclic prefix subframe, a number of enhanced control channel elements (E-CCEs) multiplexed in one resource set, wherein the E-CCEs are borne over resource elements (REs) for transmission in the resource set, and the E-CCEs constitute the enhanced physical downlink control channel (E-PDCCH);
• determining, according to the number of the E-CCEs multiplexed in one resource set N, the number of REs occupied by the E-CCEs M;
• receiving the E-PDCCH sent by a base station according to the determined number of E-CCEs multiplexed in one resource set;
• wherein the number of the E-CCEs multiplexed in one resource set N comprises at least two values comprises at least two values;
• and
• wherein determining, according to the number of the E-CCEs multiplexed in one resource set N, the number of REs occupied by the E-CCEs M comprises:
• obtaining at least two first values by rounding down a quotient of L divided by N for the value of L and each value of N, and
• selecting a first value that is closest to 36 from the at least two first values as the number of REs occupied by the E-CCEs M, where L is the total number of REs in one resource set for sending the E-PDCCH.

A base station, comprising:

• a processor, configured to:
• determine, according to whether a subframe is a special subframe or an ordinary subframe and whether the subframe is a normal cyclic prefix subframe or an extended cyclic prefix subframe, a number of enhanced control channel elements (E-CCEs) multiplexed in one resource set, wherein the E-CCEs are borne over resource elements (REs) for transmission in the resource set, and the E-CCEs constitute an enhanced physical downlink control channel (E-PDCCH),
• determine, according to the number of the E-CCEs multiplexed in one resource set N, the number of REs occupied by the E-CCEs M, wherein the number of the E-CCEs multiplexed in one resource set N comprises at least two values,
• obtain at least two first values by rounding down a quotient of L divided by N for the value of L and each value of N, and select a first value that is closest to 36 from the at least two first values as the number of REs occupied by the E-CCEs M, where L is the total number of REs in one resource set for sending the E-PDCCH to a user equipment;
• and
• a transmitter, configured to send the E-PDCCH to the user equipment according to the number of E-CCEs multiplexed in one resource set that is determined by the processor.

A user equipment, comprising:

• a processor, configured to:
• determine, according to whether a subframe is a special subframe or an ordinary subframe and whether the subframe is a normal cyclic prefix subframe or an extended cyclic prefix subframe, a number of enhanced control channel elements (E-CCEs) multiplexed in one resource set, wherein the E-CCEs are borne over resource elements (REs) for transmission in the resource set, and the E-CCEs constitute an enhanced physical downlink control channel (E-PDCCH),
• determine, according to the number of the E-CCEs multiplexed in one resource set N, the number of REs occupied by the E-CCEs M, wherein the number of the E-CCEs multiplexed in one resource set N comprises at least two values,
• obtain at least two first values by rounding down a quotient of L divided by N for the value of L and each value of N, and
• select a first value that is closest to 36 from the at least two first values as the number of REs occupied by the E-CCEs M, where L is the total number of REs in one resource set for sending an enhanced physical downlink control channel (E-PDCCH);
• and
• a receiver, configured to receive, according to the number of E-CCEs multiplexed in one resource set that is determined by the processor, the E-PDCCH sent by a base station.

A non-transitory computer readable storage medium, comprising computer program codes which when executed by a computer processor cause the computer processor to:

• determine, according to whether a subframe is a special subframe or an ordinary subframe and whether the subframe is a normal cyclic prefix subframe or an extended cyclic prefix subframe, a number of enhanced control channel elements (E-CCEs) multiplexed in one resource set, wherein the E-CCEs are borne over resource elements (REs) for transmission in the resource set, and the E-CCEs constitute an enhanced physical downlink control channel (E-PDCCH);
• determine, according to the number of the E-CCEs multiplexed in one resource set N, the number of REs occupied by the E-CCEs M;
• send the E-PDCCH to a user equipment according to the determined number of E-CCEs multiplexed in the one resource set;
• wherein the number of the E-CCEs multiplexed in one resource set N comprises at least two values;
• and
• to determine, according to the number of the E-CCEs multiplexed in one resource set N, the number of REs occupied by the E-CCEs M, the computer program codes, when executed by the computer processor, cause the computer processor to:
• obtain at least two first values by rounding down a quotient of L divided by N for the value of L and each value of N, and
• select a first value that is closest to 36 from the at least two first values as the number of REs occupied by the E-CCEs M, where L is the total number of REs in one resource set for sending the E-PDCCH.

A non-transitory computer readable storage medium, comprising computer program codes which when executed by a computer processor cause the computer processor to:

• determine, according to whether a subframe is a special subframe or an ordinary subframe and whether the subframe is a normal cyclic prefix subframe or an extended cyclic prefix subframe, a number of enhanced control channel elements (E-CCEs) multiplexed in one resource set, wherein the E-CCEs are borne over resource elements (REs) for transmission in the resource set, and the E-CCEs constitute an enhanced physical downlink control channel (E-PDCCH);
• determine, according to the number of the E-CCEs multiplexed in one resource set N, the number of REs occupied by the E-CCEs M;
• receive the E-PDCCH sent by a base station according to the determined number of E-CCEs multiplexed in one resource set;
• wherein the number of the E-CCEs multiplexed in one resource set N comprises at least two values;
• and to determine, according to the number of the E-CCEs multiplexed in one resource set N, the number of REs occupied by the E-CCEs M, the computer program codes, when executed by the computer processor, cause the processor to:
• obtain at least two first values by rounding down a quotient of L divided by N for the value of L and each value of N, and selecting a first value that is closest to 36 from the at least two first values as the number of REs occupied by the E-CCEs M, where L is the total number of REs in one resource set for sending the E-PDCCH.