METHOD, DEVICE AND SYSTEM FOR TRANSMITTING ENHANCED DOWNLINK CONTROL CHANNEL
First Claim
1. A method for sending an enhanced downlink control channel, comprising:
- presetting 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
sending 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 sending 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.
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Abstract
The present invention discloses a method, a device and a system for transmitting an enhanced downlink control channel, which belong to the communications field. The method for sending an enhanced downlink control channel includes: presetting a multiplexing unit, where the multiplexing unit includes at least one resource block pair, and the at least one resource block pair includes E-PDCCH resources and DM RS resources, and the E-PDCCH resources include multiple control channel elements; sending at least one E-PDCCH corresponding to at least one UE in at least one control channel element of the multiplexing unit, and sending the DM RS corresponding to the at least one UE. The present invention reduces the granularity of an enhanced downlink control channel, saves resources and enhances the downlink control channel, thereby providing more control channels for the UE to use.
18 Citations
26 Claims
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1. A method for sending an enhanced downlink control channel, comprising:
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presetting 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 sending 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 sending 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for receiving an enhanced downlink control channel, comprising:
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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.
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10. A base station, comprising:
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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. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A user equipment UE, comprising:
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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.
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18. A method for sending an enhanced downlink control channel, comprising:
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presetting 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; and sending 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 sending a DM RS corresponding to the at least one UE on the DM RS resources of the preset multiplexing unit. - View Dependent Claims (19, 20, 21)
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22. A method for receiving an enhanced downlink control channel, comprising:
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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.
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23. A base station, comprising:
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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, 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; 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. - View Dependent Claims (24, 25)
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26. A user equipment UE, comprising:
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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.
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Specification