Methods for transmitting and receiving control channel, base station, and user equipment
First Claim
1. A method for transmitting a control channel, comprising:
- obtaining, by a base station, a resource set and resource elements (REs) of predetermined overheads in the resource set, wherein the REs of the predetermined overheads comprise a RE of a channel state information-reference signal (CSI-RS), a RE of a cell-specific reference signal (CRS), a RE of a demodulation reference signal (DMRS), and a RE of a muted RE, and a RE of at least one of a paging channel and a synchronization channel;
mapping, by the base station, an extended physical downlink control channel (E-PDCCH) to REs comprised in an extended control channel element (E-CCE), wherein the E-CCE carries the E-PDCCH, the REs comprised in the E-CCE are a part of the REs comprised in the resource set and do not contain the RE of the CSI-RS, the RE of the CRS, the RE of the DMRS, the muted RE, and the RE of the at least one of the paging channel and the synchronization channel, the E-CCE is one of a first type E-CCE or a second type E-CCE, wherein the first type E-CCE is mapped in a discrete resource mapping manner, and the second type E-CCE is mapped in a centralized resource mapping manner; and
transmitting, by the base station, the E-PDCCH to a terminal device.
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Accused Products
Abstract
Embodiments of the present invention provide methods for transmitting and receiving a control channel, a base station, and a user equipment, which relate to the communication field, and can solve a transmission problem of available changing transmission resources caused by introduction of an E-PDCCH. A method for configuring a control channel resource includes: determining, by a base station according to a system configuration and/or user configuration, resource elements REs included in an extended control channel element E-CCE, and transmitting an extended physical downlink control channel E-PDCCH to a user equipment, where the E-PDCCH is carried by the E-CCE; and receiving, by the user equipment, the E-PDCCH, and obtaining the REs included in the E-CCE, and receiving, over the REs included in the E-CCE, the E-PDCCH transmitted by the base station. The embodiments of the present invention are used for configuring and detecting a control channel resource.
29 Citations
42 Claims
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1. A method for transmitting a control channel, comprising:
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obtaining, by a base station, a resource set and resource elements (REs) of predetermined overheads in the resource set, wherein the REs of the predetermined overheads comprise a RE of a channel state information-reference signal (CSI-RS), a RE of a cell-specific reference signal (CRS), a RE of a demodulation reference signal (DMRS), and a RE of a muted RE, and a RE of at least one of a paging channel and a synchronization channel; mapping, by the base station, an extended physical downlink control channel (E-PDCCH) to REs comprised in an extended control channel element (E-CCE), wherein the E-CCE carries the E-PDCCH, the REs comprised in the E-CCE are a part of the REs comprised in the resource set and do not contain the RE of the CSI-RS, the RE of the CRS, the RE of the DMRS, the muted RE, and the RE of the at least one of the paging channel and the synchronization channel, the E-CCE is one of a first type E-CCE or a second type E-CCE, wherein the first type E-CCE is mapped in a discrete resource mapping manner, and the second type E-CCE is mapped in a centralized resource mapping manner; and transmitting, by the base station, the E-PDCCH to a terminal device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for receiving a control channel, comprising:
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determining, by a terminal device, a resource set and resource elements (REs) of predetermined overheads in the resource set, wherein the REs of the predetermined overheads comprise a RE of a channel state information-reference signal (CSI-RS), a RE of a cell-specific reference signal (CRS), a RE of a demodulation reference signal (DMRS), and a RE of a muted RE, and a RE of at least one of a paging channel and a synchronization channel; and receiving, by the terminal device from a base station, an extended physical downlink control channel (E-PDCCH) on REs comprised in an extended control channel element (E-CCE), wherein the E-CCE carries the E-PDCCH, the REs comprised in the E-CCE are a part of the REs comprised in the resource set and do not contain the RE of the CSI-RS, the RE of the CRS, the RE of the DMRS, the muted RE, and the RE of the at least one of the paging channel and the synchronization channel, and the E-CCE is one of a first type E-CCE or a second type E-CCE, wherein the first type E-CCE is mapped in a discrete resource mapping manner, and the second type E-CCE is mapped in a centralized resource mapping manner. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A base station, comprising a transmitter, a receiver, and a processor which is communicatively connected with the transmitter and the receiver, wherein
the processor is configured to: -
obtain a resource set and REs of predetermined overheads in the resource set, wherein the REs of the predetermined overheads comprise a RE of a channel state information-reference signal (CSI-RS), a RE of a cell-specific reference signal (CRS), a RE of a demodulation reference signal (DMRS), and a RE of a muted RE, and a RE of at least one of a paging channel and a synchronization channel; and map an extended physical downlink control channel (E-PDCCH) to REs comprised in an extended control channel element (E-CCE), wherein the E-CCE carries the E-PDCCH, the REs comprised in the E-CCE are a part of the REs comprised in the resource set and do not contain the RE of the CSI-RS, the RE of the CRS, the RE of the DMRS, the muted RE, and the RE of the at least one of the paging channel and the synchronization channel, the E-CCE is one of a first type E-CCE or a second type E-CCE, wherein the first type E-CCE is mapped in a discrete resource mapping manner, and the second type E-CCE is mapped in a centralized resource mapping manner; and the transmitter is configured to; transmit the E-PDCCH to a terminal device. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A terminal device, comprising:
- a processor coupled with a receiver, wherein
the processor is configured to determine a resource set and resource elements (REs) of predetermined overheads in the resource set, wherein the REs of the predetermined overheads comprise a RE of a channel state information-reference signal (CSI-RS), a RE of a cell-specific reference signal (CRS), a RE of a demodulation reference signal (DMRS), and a RE of a muted RE, and a RE of at least one of a paging channel and a synchronization channel; and the receiver is configured to receive, from a base station, an extended physical downlink control channel (E-PDCCH) on REs comprised in an extended control channel element (E-CCE), wherein the E-CCE carries the E-PDCCH, the REs comprised in the E-CCE are a part of the REs comprised in the resource set and do not contain the RE of the CSI-RS, the RE of the CRS, the RE of the DMRS, the muted RE, and the RE of the at least one of the paging channel and the synchronization channel, and the E-CCE is one of a first type E-CCE or a second type E-CCE, wherein the first type E-CCE is mapped in a discrete resource mapping manner, and the second type E-CCE is mapped in a centralized resource mapping manner. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
- a processor coupled with a receiver, wherein
Specification