Method, device and system for transmitting enhanced downlink control channel

A method for receiving an enhanced downlink control channel, comprising:

• receiving a signal on a multiplexing unit, wherein the multiplexing unit comprises at least one resource block pair, the at least one resource block pair comprises enhanced downlink control channel E-PDCCH resources and demodulation reference DM RS resources, and the E-PDCCH resources comprise multiple control channel elements;
• performing channel estimation by using all DM RSs received on the multiplexing unit;
• and
• demodulating the signal received on the E-PDCCH resources in the multiplexing unit by using a result of the channel estimation, so as to obtain an E-PDCCH;
• wherein the at least one resource block pair is a precoding resource block group PRG, and the number of resource blocks RBs in the PRG is decided by system bandwidth.

A base station, comprising:

• a configuration module, configured to preset a multiplexing unit, wherein the multiplexing unit comprises at least one resource block pair, the at least one resource block pair comprises enhanced downlink control channel E-PDCCH resources and demodulation reference DM RS resources, and the E-PDCCH resources comprise multiple control channel elements;
• and
• a sending module, configured to send at least one E-PDCCH corresponding to at least one user equipment UE in at least one control channel element of the preset multiplexing unit, and send a DM RS corresponding to the at least one UE on the DM RS resources of the preset multiplexing unit,
• wherein the at least one resource block pair is a precoding resource block group PRG, and the number of resource blocks RBs in the PRG is decided by system bandwidth.

A user equipment UE, comprising:

• a receiving module, configured to receive a signal in a multiplexing unit, wherein the multiplexing unit comprises at least one resource block pair, the at least one resource block pair comprises enhanced downlink control channel E-PDCCH resources and demodulation reference DM RS resources, and the E-PDCCH resources comprise multiple control channel elements;
• a channel estimation module, configured to perform channel estimation by using all DM RSs received on the multiplexing unit;
• and
• a demodulation module, configured to demodulate the signal received on the E-PDCCH resources in the multiplexing unit by using a result of the channel estimation, so as to obtain an E-PDCCH,
• wherein the at least one resource block pair is a precoding resource block group PRG, and the number of resource blocks RBs in the PRG is decided by system bandwidth.

A method for receiving an enhanced downlink control channel, comprising:

• receiving a signal on a multiplexing unit, wherein the multiplexing unit comprises at least one resource block pair, the at least one resource block pair comprises enhanced downlink control channel E-PDCCH resources and demodulation reference DM RS resources, the E-PDCCH resources comprise multiple control channel elements, and an allocation pattern of the control channel elements in the multiplexing unit is bound to a DM RS port;
• performing channel estimation by using all DM RSs received on the multiplexing unit;
• and
• demodulating the signal received on the E-PDCCH resources in the multiplexing unit by using a result of the channel estimation, so as to obtain an E-PDCCH.

A user equipment UE, comprising:

• a receiving module, configured to receive a signal on a multiplexing unit, wherein the multiplexing unit comprises at least one resource block pair, the at least one resource block pair comprises enhanced downlink control channel E-PDCCH resources and demodulation reference DM RS resources, the E-PDCCH resources comprise multiple control channel elements, and an allocation pattern of the control channel elements in the multiplexing unit is bound to a DM RS port;
• a channel estimation module, configured to perform channel estimation by using all DM RSs received on the multiplexing unit;
• and
• a demodulation module, configured to demodulate the signal received on the E-PDCCH resources in the multiplexing unit by using a result of the channel estimation, so as to obtain an E-PDCCH.