Methods for transmitting and receiving control channel, base station, and user equipment
First Claim
1. A method comprising:
- determining, by a base station, a resource set and resource elements (REs) of predetermined overheads in the resource set, wherein;
the resource set is equally divided into resource subsets according to a predetermined quantity of control channel elements in the resource set, andfor each resource subset;
a quantity of available REs for control channel transmission in the each resource subset is obtained according to a total quantity of REs in the each resource subset and a quantity of REs of the predetermined overheads in the each resource subset, wherein the REs of the predetermined overheads comprise;
a RE of a cell-specific reference signal (CRS), a RE of a channel state information-reference signal (CSI-RS), and a muted RE, andeach resource subset corresponds to a control channel element, and one or more control channel elements are mapped in a centralized resource mapping mode;
mapping a first control channel to the available REs of at least one of the resource subsets, wherein for each control channel element of the one or more control channel elements;
from a preset start point, the first control channel is mapped to REs in the resource subset corresponding to the control channel element, and when the RE of the predetermined overheads exists during the mapping, the RE of the predetermined overheads is skipped; and
sending, by the base station, the first control channel.
1 Assignment
0 Petitions
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 includes determining, by a terminal device, a resource set and resource elements (REs) of predetermined overheads in the resource set. The REs of the predetermined overheads include an RE of at least one of a paging channel and a synchronization channel, with at least one of following REs: an RE of a channel state information-reference signal (CSI-RS), an RE of a cell-specific reference signal (CRS), an RE of a demodulation reference signal (DMRS), or a muted RE. The terminal device receives from a base station, a control channel on an RE subset comprised in the resource set, wherein the RE subset comprises a part of the REs in the resource set and do not contain the REs of the predetermined overheads.
-
Citations
15 Claims
-
1. A method comprising:
-
determining, by a base station, a resource set and resource elements (REs) of predetermined overheads in the resource set, wherein; the resource set is equally divided into resource subsets according to a predetermined quantity of control channel elements in the resource set, and for each resource subset; a quantity of available REs for control channel transmission in the each resource subset is obtained according to a total quantity of REs in the each resource subset and a quantity of REs of the predetermined overheads in the each resource subset, wherein the REs of the predetermined overheads comprise;
a RE of a cell-specific reference signal (CRS), a RE of a channel state information-reference signal (CSI-RS), and a muted RE, andeach resource subset corresponds to a control channel element, and one or more control channel elements are mapped in a centralized resource mapping mode; mapping a first control channel to the available REs of at least one of the resource subsets, wherein for each control channel element of the one or more control channel elements; from a preset start point, the first control channel is mapped to REs in the resource subset corresponding to the control channel element, and when the RE of the predetermined overheads exists during the mapping, the RE of the predetermined overheads is skipped; and sending, by the base station, the first control channel. - View Dependent Claims (2, 3, 4, 5)
-
-
6. An apparatus, comprising:
-
a storage medium including executable instructions; and a processor configured to execute the executable instructions to cause the apparatus to; determine a resource set and resource elements (REs) of predetermined overheads in the resource set, wherein; the resource set is equally divided into resource subsets according to a predetermined quantity of control channel elements in the resource set, and for each resource subset; a quantity of available REs for control channel transmission in the each resource subset is obtained according to a total quantity of REs in the each resource subset and a quantity of REs of the predetermined overheads in the each resource subset, wherein the REs of the predetermined overheads comprise;
a RE of a cell-specific reference signal (CRS), a RE of a channel state information-reference signal (CSI-RS), and a muted RE, andeach resource subset corresponds to a control channel element, and one or more control channel elements are mapped in a centralized resource mapping mode; map a first control channel to the available REs of at least one of the resource subsets, wherein for each control channel element of the one or more control channel elements; from a preset start point, the first control channel is mapped to REs in the resource subset corresponding to the control channel element, and when the RE of the predetermined overheads exists during the mapping, the RE of the predetermined overheads is skipped; and send the first control channel. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A non-transitory computer-readable storage medium comprising instructions that, when executed by a computer, cause the computer to carry out steps of:
-
determining a resource set and resource elements (REs) of predetermined overheads in the resource set, wherein; the resource set is equally divided into resource subsets according to a predetermined quantity of control channel elements in the resource set, and for each resource subset; a quantity of available REs for control channel transmission in the each resource subset is obtained according to a total quantity of REs in the each resource subset and a quantity of REs of the predetermined overheads in the each resource subset, wherein the REs of the predetermined overheads comprise;
a RE of a cell-specific reference signal (CRS), a RE of a channel state information-reference signal (CSI-RS), and a muted RE, andeach resource subset corresponds to a control channel element, and one or more control channel elements are mapped in a centralized resource mapping mode; mapping a first control channel to the available REs of at least one of the resource subsets, wherein for each control channel element of the one or more control channel elements; from a preset start point, the first control channel is mapped to REs in the resource subset corresponding to the control channel element, and when the RE of the predetermined overheads exists during the mapping, the RE of the predetermined overheads is skipped; and sending the first control channel. - View Dependent Claims (12, 13, 14, 15)
-
Specification